Easy To Use Patents Search & Patent Lawyer Directory

At Patents you can conduct a Patent Search, File a Patent Application, find a Patent Attorney, or search available technology through our Patent Exchange. Patents are available using simple keyword or date criteria. If you are looking to hire a patent attorney, you've come to the right place. Protect your idea and hire a patent lawyer.


Search All Patents:



  This Patent May Be For Sale or Lease. Contact Us

  Is This Your Patent? Claim This Patent Now.



Register or Login To Download This Patent As A PDF




United States Patent RE43,625
Kim ,   et al. September 4, 2012

Drum type washing machine

Abstract

A drum type washing machine is provided, in which vibration is efficiently attenuated, by a maximum capacity within a size-fixed cabinet is provided, and by which a user does not bend over or sit down to load laundry into the washing machine. The drum type washing machine includes a cabinet forming an exterior of the drum type washing machine, a tub fixed within the cabinet, the tub having a laundry loading entrance at an outer circumference of the tub, a drum rotatably provided within the tub, the drum having an opening on a lateral side of the drum to communicate with the laundry loading entrance of the tub, a motor assembly provided next to one side of the drum to rotate the drum, and a suspension assembly provided to support a weight of the drum and attenuate vibration of the drum.


Inventors: Kim; Na Eun (Seoul, KR), Kim; Jin Woong (Seoul, KR), Park; Young Hwan (Seoul, KR), Chang; Jae Won (Gunpo-si, KR)
Assignee: LG Electronics Inc. (Seoul, KR)
Appl. No.: 13/116,059
Filed: May 26, 2011


Related U.S. Patent Documents

Application NumberFiling DatePatent NumberIssue Date
Reissue of:11727836Mar., 20077536882May., 2009

Foreign Application Priority Data

Mar 29, 2006 [KR] 10-2006-0028358
Apr 12, 2006 [KR] 10-2006-0033255

Current U.S. Class: 68/24 ; 68/140
Current International Class: D06F 37/22 (20060101)
Field of Search: 68/14,58,140,24

References Cited

U.S. Patent Documents
912038 February 1909 Seifert
1077043 October 1913 Darrow
1470245 October 1923 Slider
1611865 December 1926 Ahlm
1611895 December 1926 Dienner
1657181 January 1928 Sando
1787427 January 1931 Eckhard
2089066 August 1937 Morrill
2096649 October 1937 Rasanen
2152458 March 1939 Bergman
2153418 April 1939 Haberstump
2165884 July 1939 Chamberlin et al.
2191607 February 1940 Chamberlin et al.
2217351 October 1940 Soderquist
2230345 February 1941 Bradbury
2278911 April 1942 Breckenridge
2296257 September 1942 Breckenridge
2296261 September 1942 Breckenridge et al.
2296267 September 1942 Baird
2323765 July 1943 Haberstump
2331897 October 1943 Dyer
2356816 August 1944 Breckenridge et al.
2356818 August 1944 Bruckman
2389774 November 1945 Haberstump
2408509 October 1946 Clark
2434476 January 1948 Wales
2498181 February 1950 Reiter
2509516 May 1950 Murphy
2510836 June 1950 Russell et al.
2521578 September 1950 Haberstump
2526002 October 1950 Brotman
2526048 October 1950 Russell
2526444 October 1950 Woodson
2527239 October 1950 Woodson
2541166 February 1951 Leef
2542509 February 1951 Goriup
2555269 May 1951 Chamberlin
2556490 June 1951 Chamberlin
2565604 August 1951 Geiger
2579472 December 1951 Chamberlin et al.
2579836 December 1951 Lee et al.
2589284 March 1952 O'Neil
2593752 April 1952 Haberstump
2615320 October 1952 Belaieff
2620070 December 1952 Dodge
2629245 February 1953 Chamberlin
2644326 July 1953 Worst
2652708 September 1953 Rimsha et al.
2656700 October 1953 Smith
2711297 June 1955 Thiele
2717135 September 1955 Douglas
2737799 March 1956 Knipmeyer
2757531 August 1956 Fox
2758685 August 1956 Sisson
2774621 December 1956 Kilbourne, Jr.
2785557 March 1957 Stilwell, Jr.
2836046 May 1958 Smith
2843314 July 1958 Hansen
2844225 July 1958 Hubbard et al.
2859877 November 1958 Sisson
2873599 February 1959 Buechler
2882706 April 1959 Brucken
2893135 July 1959 Smith
2895319 July 1959 Rochefort
2908871 October 1959 McKay
2930217 March 1960 Rehmke
2937516 May 1960 Czaika
2957330 October 1960 Cline
2959966 November 1960 Bochan
2972877 February 1961 Platt
2975528 March 1961 Shewmon
2984094 May 1961 Belaieff
2986914 June 1961 Brucken
2987189 June 1961 Evjen
2987190 June 1961 Bochan
2990706 July 1961 Bochan
2995023 August 1961 Douglas
2995918 August 1961 Neidenthal et al.
3048026 August 1962 Bochan et al.
3058331 October 1962 Anthony
3066522 December 1962 Steinmuller
3073668 January 1963 Rothenberger
3089326 May 1963 Belaieff
3098581 July 1963 Marsilio
3135688 June 1964 Compans
3153951 October 1964 Whelan
3178916 April 1965 Belaieff et al.
3197983 August 1965 Ilmer
3206267 September 1965 Gruner et al.
3248908 May 1966 Pope
3257830 June 1966 Shelton
3273361 September 1966 Smith
3280603 October 1966 Schwamm
3333444 August 1967 Bochan
3356222 December 1967 Belaieff
3362198 January 1968 Barito
3389881 June 1968 Stelwagen
3391469 July 1968 Reeder
3459461 August 1969 Bannon, Jr.
3477259 November 1969 Barnish et al.
3503228 March 1970 Lake
3509742 May 1970 Bauer
3531954 October 1970 Krupsky
3742738 July 1973 Frotriede
3783653 January 1974 Haerick
3799348 March 1974 Mazza
3927542 December 1975 de Hedouville et al.
3952557 April 1976 Bochan
4114406 September 1978 Horowitz et al.
4295387 October 1981 Zhivotov et al.
4321302 March 1982 Umeki et al.
4412390 November 1983 Grant
4437325 March 1984 Hershberger
4446706 May 1984 Hartwig
4498181 February 1985 Menown et al.
4618193 October 1986 Cuthbert et al.
4771253 September 1988 Sasaki et al.
4819460 April 1989 Obradovic
4989684 February 1991 Conaway
5038586 August 1991 Nukaga et al.
5080204 January 1992 Bauer et al.
5199690 April 1993 Marshall
5209458 May 1993 Eubank et al.
5230229 July 1993 Stadelmann et al.
5267456 December 1993 Nukaga et al.
5280660 January 1994 Pellerin et al.
5433091 July 1995 Durazzani et al.
5526657 June 1996 Johnson
5548979 August 1996 Ryan et al.
5570597 November 1996 Bongini et al.
5657649 August 1997 Lim
5678430 October 1997 Merlin et al.
5711170 January 1998 Johnson
5711171 January 1998 Uhlin
5768730 June 1998 Matsumoto et al.
5870905 February 1999 Imamura et al.
5907880 June 1999 Durazzani et al.
5913951 June 1999 Herr et al.
5924312 July 1999 Vande Haar
5961105 October 1999 Ehrnsberger et al.
5979195 November 1999 Bestell et al.
6032494 March 2000 Tanigawa et al.
6122843 September 2000 Noguchi et al.
6148647 November 2000 Kabeya et al.
6343492 February 2002 Seagar et al.
6363756 April 2002 Seagar et al.
6460382 October 2002 Kim et al.
6474114 November 2002 Ito et al.
6477867 November 2002 Collecutt et al.
6481035 November 2002 Seagar et al.
6510715 January 2003 Simsek et al.
6510716 January 2003 Kim et al.
6516638 February 2003 Myerscough
6539753 April 2003 Ito et al.
6557383 May 2003 Ito et al.
6564594 May 2003 Ito et al.
6578225 June 2003 Jonsson
6578391 June 2003 Seagar et al.
6612138 September 2003 Ryu et al.
6626014 September 2003 Heyder et al.
6662682 December 2003 Stalsberg
6681602 January 2004 Heyder et al.
6782722 August 2004 Yokoi et al.
6968632 November 2005 Guinibert et al.
6981395 January 2006 Ryu et al.
7013682 March 2006 Sharrow
7065905 June 2006 Guinibert et al.
7073356 July 2006 Nakamura et al.
7117613 October 2006 Guinibert et al.
7225562 June 2007 Guinibert et al.
7249742 July 2007 Guinibert et al.
7257905 August 2007 Guinibert et al.
7334799 February 2008 O'Hara
7412783 August 2008 Guinibert et al.
7467483 December 2008 Guinibert et al.
7536882 May 2009 Kim et al.
7762007 July 2010 Guinibert et al.
7841220 November 2010 Lim et al.
2002/0000108 January 2002 Heyder et al.
2002/0014095 February 2002 Seagar et al.
2002/0042957 April 2002 Kim et al.
2002/0166349 November 2002 Lim et al.
2003/0056302 March 2003 Broker et al.
2003/0061841 April 2003 Nakamura et al.
2004/0025544 February 2004 Kim et al.
2004/0031295 February 2004 Choi
2004/0035155 February 2004 Yoon
2004/0123631 July 2004 Chang
2004/0129035 July 2004 Chang
2004/0163425 August 2004 Kim et al.
2004/0163428 August 2004 Kim et al.
2004/0237603 December 2004 Kim et al.
2004/0244121 December 2004 Lim et al.
2004/0244168 December 2004 Lee
2004/0244438 December 2004 North
2005/0028564 February 2005 Lee et al.
2005/0188472 September 2005 Park et al.
2005/0274159 December 2005 Jeon et al.
2006/0010612 January 2006 Kim et al.
2006/0011429 January 2006 Park et al.
2006/0016228 January 2006 Chang et al.
2006/0254321 November 2006 Lim et al.
2007/0125135 June 2007 Kim et al.
2007/0227200 October 2007 Kim et al.
Foreign Patent Documents
2423308 Mar., 2001 CN
1293276 May., 2001 CN
1332816 Jan., 2002 CN
1511997 Jul., 2004 CN
1515732 Jul., 2004 CN
1550609 Dec., 2004 CN
1614123 May., 2005 CN
1 095 778 Dec., 1960 DE
1 113 439 Sep., 1961 DE
1 188 547 Mar., 1965 DE
19 12 481 Mar., 1965 DE
24 01 888 Jul., 1975 DE
24 54 489 May., 1976 DE
26 06 589 Sep., 1976 DE
26 33 604 Feb., 1978 DE
27 32 684 Feb., 1978 DE
27 32 684 Feb., 1978 DE
27 46 989 Apr., 1978 DE
31 09 641 Feb., 1982 DE
31 34 633 Jun., 1982 DE
31 34 633 Aug., 1982 DE
34 37 835 May., 1985 DE
34 37 835 May., 1985 DE
37 13 921 Nov., 1988 DE
38 11 583 Oct., 1989 DE
39 07 258 Oct., 1989 DE
39 34 434 Apr., 1991 DE
42 39 504 May., 1994 DE
43 10 594 Oct., 1994 DE
4 426 900 Feb., 1995 DE
43 30 079 Mar., 1995 DE
198 06 884 Aug., 1999 DE
199 61 780 Jul., 2001 DE
0 124 939 Nov., 1984 EP
0 132 805 Feb., 1985 EP
0 212 259 Mar., 1987 EP
0 272 949 Jun., 1988 EP
0 371 926 Jun., 1990 EP
0 405 068 Jan., 1991 EP
0 465 885 Jan., 1992 EP
0 716 177 Jun., 1996 EP
0 750 064 Dec., 1996 EP
0 869 212 Oct., 1998 EP
0 943 720 Sep., 1999 EP
0 969 134 Jan., 2000 EP
0 725 179 Jul., 2000 EP
1 055 765 Nov., 2000 EP
1 079 014 Feb., 2001 EP
1 094 239 Apr., 2001 EP
1 201 810 May., 2002 EP
1 386 996 Feb., 2004 EP
1 433 890 Jun., 2004 EP
1 433 891 Jun., 2004 EP
1 433 891 Jun., 2004 EP
1 455 011 Sep., 2004 EP
1 505 191 Feb., 2005 EP
1 548 170 Jun., 2005 EP
1 605 088 Dec., 2005 EP
1 619 286 Jan., 2006 EP
1 688 531 Aug., 2006 EP
2 230 782 Jan., 1975 FR
2 478 151 Sep., 1981 FR
2 511 401 Feb., 1983 FR
2 610 017 Jul., 1988 FR
646582 Nov., 1950 GB
1120431 Jul., 1968 GB
1 181 797 Feb., 1970 GB
1 270 950 Apr., 1972 GB
1 353 283 May., 1974 GB
2 096 649 Oct., 1982 GB
2 157 326 Oct., 1985 GB
2 189 511 Oct., 1987 GB
2 202 867 Oct., 1988 GB
2 360 296 Sep., 2001 GB
39-21844 Jul., 1962 JP
48-64179 Aug., 1973 JP
49-135264 Nov., 1974 JP
52-134264 Nov., 1977 JP
54-028470 Mar., 1979 JP
56-116987 Sep., 1981 JP
57-43792 Mar., 1982 JP
59-211496 Nov., 1984 JP
60-190998 Sep., 1985 JP
63-95587 Jun., 1988 JP
01-230390 Sep., 1989 JP
02-189188 Jul., 1990 JP
03-141988 Jun., 1991 JP
03-88479 Sep., 1991 JP
04-092697 Mar., 1992 JP
04-210091 Jul., 1992 JP
4-220291 Aug., 1992 JP
04-236988 Aug., 1992 JP
04-240488 Aug., 1992 JP
04-325196 Nov., 1992 JP
4-371194 Dec., 1992 JP
04-371194 Dec., 1992 JP
05-084388 Apr., 1993 JP
5-084389 Apr., 1993 JP
05-220293 Aug., 1993 JP
06-079087 Mar., 1994 JP
09-066185 Mar., 1997 JP
09-182368 Jul., 1997 JP
09-182370 Jul., 1997 JP
09-313780 Dec., 1997 JP
10-201993 Aug., 1998 JP
10-263265 Oct., 1998 JP
11-076680 Mar., 1999 JP
2000-262796 Sep., 2000 JP
2000-334194 Dec., 2000 JP
2002-153695 May., 2002 JP
2002-529173 Sep., 2002 JP
2002-346281 Dec., 2002 JP
2003-079995 Mar., 2003 JP
2003-230792 Aug., 2003 JP
2004-513721 May., 2004 JP
2004-188204 Jul., 2004 JP
2004-209255 Jul., 2004 JP
2005-198698 Jul., 2005 JP
2006-026408 Feb., 2006 JP
2006-034755 Feb., 2006 JP
10-1999-0066050 Aug., 1999 KR
10-1999-0079731 Nov., 1999 KR
10-2001-0009545 Feb., 2001 KR
10-2001-046776 Jun., 2001 KR
10-2004-0011307 Feb., 2004 KR
10-2004-0047223 Jun., 2004 KR
10-2004-0058999 Jul., 2004 KR
10-2006-0009075 Jan., 2006 KR
10-2006-00028804 Apr., 2006 KR
1181112 Sep., 1986 SU
1615258 Dec., 1990 SU
1663074 Jul., 1991 SU
1 703 740 Jan., 1992 SU
WO 98/29595 Jul., 1998 WO
WO 99/35320 Jul., 1999 WO
WO 03/012185 Feb., 2003 WO
WO 03/097918 Nov., 2003 WO
WO 2005/071155 Aug., 2005 WO

Other References

European Office Action dated Jul. 14, 2011 (Application No. 03013411.8). cited by other .
U.S. Office Action dated Dec. 30, 2005 issued in U.S. Appl. No. 10/461,451. cited by other .
U.S. Final Office Action dated Aug. 14, 2006 issued in U.S. Appl. No. 10/461,451. cited by other .
U.S. Final Office Action dated Dec. 13, 2006 issued in U.S. Appl. No. 10/461,451. cited by other .
U.S. Office Action dated Jan. 5, 2007 issued in U.S. Appl. No. 11/475,885. cited by other .
U.S. Office Action dated Apr. 27, 2007 issued in U.S. Appl. No. 10/461,451. cited by other .
U.S. Office Action dated Jun. 8, 2007 issued in U.S. Appl. No. 11/470,704. cited by other .
U.S. Final Office Action dated Jul. 17, 2007 issued in U.S. Appl. No. 11/475,885. cited by other .
European Search Report dated Aug. 20, 2007 issued in Application No. 07105198.1-2314. cited by other .
U.S. Office Action dated Nov. 19, 2007 issued in U.S. Appl. No. 10/461,451. cited by other .
U.S. Office Action dated Nov. 30, 2007 issued in U.S. Appl. No. 11/470,704. cited by other .
U.S. Office Action dated Apr. 1, 2008 issued in U.S. Appl. No. 11/475,885. cited by other .
U.S. Final Office Action dated May 15, 2008 issued in U.S. Appl. No. 11/470,704. cited by other .
U.S. Final Office Action dated Jun. 16, 2008 issued in U.S. Appl. No. 10/461,451. cited by other .
U.S. Office Action dated Sep. 5, 2008 issued in U.S. Appl. No. 11/165,332. cited by other .
U.S. Office Action dated Sep. 11, 2008 issued in U.S. Appl. No. 11/470,704. cited by other .
U.S. Final Office Action dated Feb. 25, 2009 issued in U.S. Appl. No. 11/165,332. cited by other .
U.S. Office Action dated Feb. 25, 2009 issued in U.S. Appl. No. 12/198,269. cited by other .
Japanese Office Action dated Mar. 2, 2009 issued in Application No. 2004-000478. cited by other .
U.S. Office Action dated Sep. 21, 2009 issued in U.S. Appl. No. 12/267,457. cited by other .
U.S. Final Office Action dated Oct. 14, 2009 issued in U.S. Appl. No. 12/198,269. cited by other .
U.S. Office Action dated Oct. 15, 2009 issued in U.S. Appl. No. 11/529,759. cited by other .
U.S. Office Action dated Oct. 28, 2009 issued in U.S. Appl. No. 12/230,031. cited by other .
Japanese Office Action dated Dec. 18, 2009 issued in Application No. 2004-000478. cited by other .
Chinese Office Action issued in CN Application No. 200710089087.4 dated Jan. 8, 2010. cited by other .
U.S. Office Action dated Feb. 2, 2010 issued in U.S. Appl. No. 12/198,269. cited by other .
European Search Report dated Feb. 3, 2010 issued in Application No. 09178918.0. cited by other .
U.S. Final Office Action dated Mar. 5, 2010 issued in U.S. Appl. No. 12/267,457. cited by other .
Chinese Office Action dated Mar. 8, 2010 issued in Application No. 200610142200.6. cited by other .
U.S. Final Office Action dated Mar. 19, 2010 issued in U.S. Appl. No. 11/529,759. cited by other .
Notice of Opposition dated May 7, 2010 filed in the European Patent Office for European Patent Application No. 05013603.5 (Publication No. EP 1 619 286 B1). cited by other .
U.S. Final Office Action dated May 14, 2010 issued in U.S. Appl. No. 12/230,031. cited by other .
Japanese Office Action issued in JP Application No. 2005-204374 dated Jul. 28, 2010. cited by other .
Japanese Office Action issued in JP Application No. 2006-235745 dated Aug. 3, 2010. cited by other .
U.S. Office Action dated Aug. 13, 2010 issued in U.S. Appl. No. 12/639,872. cited by other .
Notice of Opposition and Opposition Brief filed in EP Application No. 03013411.8 dated Sep. 29, 2010 (Publication No. EP 1 433 890 B1) (Full German Text & English Translation). cited by other .
U.S. Office Action issued in U.S. Appl. No. 12/797,758 dated Oct. 28, 2010. cited by other .
European Search Report issued in EP Application No. 10012467 dated Nov. 25, 2010. cited by other .
U.S. Office Action issued in U.S. Appl. No. 12/639,859 dated Dec. 9, 2010. cited by other .
U.S. Office Action issued in U.S. Appl. No. 12/940,138 dated Dec. 16, 2010. cited by other .
U.S. Office Action issued in U.S. Appl. No. 12/639,894 dated Dec. 23, 2010. cited by other .
U.S. Office Action issued in U.S. Appl. No. 12/985,389 dated Mar. 16, 2011. cited by other .
U.S. Office Action issued in U.S. Appl. No. 12/797,758 dated Mar. 17, 2011. cited by other .
European Search Report issued in EP Application No. 10012465 dated Mar. 24, 2011. cited by other .
European Search Report issued in EP Application No. 10012469 dated Apr. 8, 2011. cited by other .
European Search Report issued in EP Application No. 10012470 dated Apr. 8, 2011. cited by other .
U.S. Office Action issued in U.S. Appl. No. 12/940,096 dated Apr. 18, 2011. cited by other .
U.S. Office Action issued in U.S. Appl. No. 12/639,859 dated Apr. 27, 2011. cited by other .
European Search Report issued in EP Application No. 10012468 dated May 4, 2011. cited by other .
U.S. Office Action issued in U.S. Appl. No. 12/940,138 dated May 20, 2011. cited by other .
U.S. Final Office Action issued in U.S. Appl. No. 12/639,894 dated Aug. 3, 2011. cited by other .
U.S. Final Office Action issued in U.S. Appl. No. 12/985,389 dated Aug. 8, 2011. cited by other .
U.S. Final Office Action issued in U.S. Appl. No. 12/940,138 dated Sep. 8, 2011. cited by other .
Office Action issued in U.S. Appl. No. 13/116,096 dated Nov. 29, 2011. cited by other .
Office Action issued in U.S. Application No. 13/116,114 dated Nov. 29, 2011. (K1115RE.05). cited by other .
Office Action issued in U.S. Appl. No. 13/116,077 dated Nov. 30, 2011. cited by other .
Office Action issued in U.S. Appl. No. 13/116,089 dated Nov. 30, 2011. cited by other .
Office Action issued in U.S. Appl. No. 13/116,159 dated Nov. 30, 2011. cited by other .
Office Action issued in U.S. Appl. No. 13/116,147 dated Nov. 30, 2011. cited by other .
Office Action issued in U.S. Appl. No. 13/116,105 dated Dec. 1, 2011. cited by other .
U.S. Office Action issued in U.S. Appl. No. 13/241,348 dated Feb. 23, 2012. cited by other .
U.S. Office Action issued in U.S. Appl. No. 13/239,424 dated Feb. 29, 2012. cited by other .
U.S. Office Action issued in U.S. Appl. No. 13/241,411 dated Mar. 6, 2012. cited by other .
U.S. Notice of Allowance issued in U.S. Appl. No. 13/239,445 dated Mar. 12, 2012. cited by other .
U.S. Office Action issued in U.S. Appl. No. 13/239,427 dated Mar. 21, 2012. cited by other .
U.S. Office Action issued in U.S. Appl. No. 13/241,337 dated Mar. 22, 2012. cited by other .
U.S. Office Action issued in U.S. Appl. No. 13/239,416 dated Apr. 12, 2012. cited by other .
U.S. Office Action issued in U.S. Appl. No. 13/116,089 dated Apr. 13, 2012. cited by other .
U.S. Office Action issued in U.S. Appl. No. 13/116,077 dated Apr. 16, 2012. cited by other .
U.S. Office Action issued in U.S. Appl. No. 13/116,096 dated Apr. 16, 2012. cited by other .
U.S. Office Action issued in U.S. Appl. No. 13/116,159 dated Apr. 18, 2012. cited by other .
U.S. Office Action issued in U.S. Appl. No. 13/116,114 dated Apr. 18, 2012. cited by other .
European Office Action dated Dec. 7, 2011. (Application No. 10 012 465.0-2314). cited by other .
Office Action issued in U.S. Appl. No. 13/241,366 dated Jan. 31, 2012. cited by other .
Notice of Allowance issued in U.S. Appl. No. 13/239,439 dated Feb. 9, 2012. cited by other .
Notice of Allowance issued in U.S. Appl. No. 13/239,448 dated Feb. 10, 2012. cited by other .
Office Action issued in U.S. Appl. No. 13/241,366 dated Feb. 10, 2012. cited by other .
U.S. Office Action issued in U.S. Appl. No. 13/239,430 dated May 4, 2012. cited by other .
U.S. Office Action issued in U.S. Appl. No. 13/239,422 dated May 9, 2012. cited by other .
U.S. Office Action issued in U.S. Appl. No. 13/241,348 dated Jun. 25, 2012. cited by other .
U.S. Office Action issued in U.S. Appl. No. 13/241,366 dated Jun. 26, 2012. cited by other .
U.S. Office Action issued in U.S. Appl. No. 13/241,396 dated Jun. 27, 2012. cited by other .
European Patent Office 0 132 805 Feb. 1985. cited by examiner.

Primary Examiner: Stinson; Frankie L
Attorney, Agent or Firm: KED & Associates LLP

Claims



What is claimed is:

1. A drum type washing machine comprising: a cabinet forming an exterior of the drum type washing machine; a tub fixed within the cabinet, the tub defining a space where water for washing laundry is held and having a laundry loading entrance at an outer circumference of the tub; a drum rotatably provided within the space of the tub, the drum having an opening on a lateral circumferential side thereof to communicate with the laundry loading entrance of the tub; a motor assembly provided next to one side of the drum to rotate the drum the motor assembly including a rotational shaft connected to the drum; a plate through which the rotational shaft passes, the plate covering part of the space of the tub; a gasket connected between the tub and the plate, the gasket covering part of the space of the tub therebetween; and a suspension assembly provided to support a weight of the drum and attenuate vibration of the drum.

2. The drum type washing machine of claim 1, the motor assembly comprising: a motor generating a rotational force; and a bearing housing rotatably supporting the rotational shaft, and the suspension assembly comprising: at least one damper bracket extending from the bearing housing; and an attenuating part provided between the at least one damper bracket and the cabinet to support the drum via the at least one damper bracket.

3. The drum type washing machine of claim 2, the attenuating part comprising a pair of main dampers provided to support the weight of the drum and attenuate vertical vibration of the drum.

4. The drum type washing machine of claim 3, the attenuating part further comprising a sub-damper provided to attenuate horizontal vibration of the drum.

5. The drum type washing machine of claim 4, wherein the at least one damper bracket is configured to be bent toward a front side of the tub from a center of the bearing housing and wherein one end of the sub-damper is joined to an end portion of the at least one damper bracket.

6. The drum type washing machine of claim 4, wherein the sub-damper is connected to both of the at least one damper bracket and the cabinet.

7. The drum type washing machine of claim 3, the attenuating part further comprising an elastic member connecting the bearing housing on a topside of the cabinet.

8. The drum type washing machine of claim 3, the at least two main dampers, each comprising: a cylinder; a piston provided to reciprocate within the cylinder according to a motion of the drum to attenuate the vibration of the drum; and a spring configured to elastically support the piston.

9. The drum type washing machine of claim 8, wherein a frictional member is provided to an outer circumference of the piston to attenuate the vibration by making a frictional movement against an inner circumference of the cylinder according to a motion of the piston.

10. The drum type washing machine of claim 8, wherein each of the at least two main dampers is connected to the corresponding damper bracket.

11. The drum type washing machine of claim 2, the attenuating part comprising at least three dampers provided to support the weight of the drum and attenuate vertical vibration of the drum.

12. The drum type washing machine of claim 11, the attenuating part comprising: at least two main dampers provided to support the weight of the drum; and at least one rear damper provided to prevent the drum from inclining to one side.

13. The drum type washing machine of claim 12, wherein the rear damper is configured to prevent the drum from inclining to a front or rear side of the drum.

14. The drum type washing machine of claim 12, the at least one damper bracket comprising a rear damper bracket configured to extend from the bearing housing to a center of a lower outer circumference of the tub to be joined to the at least one rear damper.

15. The drum type washing machine of claim 14, wherein each of the at least two main dampers is connected to the corresponding main damper bracket and wherein the rear damper is hinged to the rear damper bracket.

16. The drum type washing machine of claim 12, the at least two main dampers, each comprising: a cylinder; a piston provided to reciprocate within the cylinder according to a motion of the drum to attenuate the vibration of the drum; and a spring configured to support the piston and have an elastic force when the piston enters the cylinder.

17. The drum type washing machine of claim 12, the rear damper comprising: a cylinder; a piston provided to reciprocate within the cylinder according to a motion of the drum to attenuate the vibration of the drum; and a spring configured to support the piston and have an elastic force when the piston is pulled out of the cylinder.

18. The drum type washing machine of claim 11, further comprising a sub-damper provided to attenuate horizontal vibration of the drum.

19. A drum type washing machine comprising: a cabinet forming an exterior of the drum type washing machine; a tub fixed within the cabinet, the tub having a laundry loading entrance at an outer circumference of the tub; a drum rotatably provided within the tub, the drum having an opening on a lateral circumferential side of the drum to communicate with the laundry loading entrance of the tub; a motor assembly provided next to one side of the drum to rotate the drum, the motor assembly including a rotational shaft connected to the drum and a bearing housing to rotatably support the rotational shaft; and a suspension assembly provided to support a weight of the drum and attenuate vibration of the drum, wherein the suspension assembly includes at least one damper bracket which is configured to be bent toward a front side of the tub from the bearing housing and a damper which is connected to the at least one damper bracket.

20. A drum type washing machine comprising: a cabinet forming an exterior of the drum type washing machine; a tub fixed within the cabinet, the tub having a laundry loading entrance at an outer circumference of the tub; a drum rotatably provided within the tub, the drum having an opening on a lateral circumferential side of the drum to communicate with the laundry loading entrance of the tub; a motor assembly provided next to one side of the drum to rotate the drum, the motor assembly including a rotational shaft connected to the drum and a bearing housing to rotatably support the rotational shaft; and a suspension assembly provided to support a weight of the drum and attenuate vibration of the drum, the suspension assembly comprising at least two damper brackets and at least two dampers, wherein each of the at least two damper brackets extends from the bearing housing to an outside of each lower side of an outer circumference of the tub, and is bent toward a front side of the drum, and extends to a prescribed length, and the two dampers are connected to the two damper brackets, respectively.

.Iadd.21. The drum type washing machine of claim 1, wherein the suspension assembly comprises a first bracket, the first bracket comprising a first bracket portion attached to the plate and extending in a radial direction of the rotational shaft, and a second bracket portion connected to the first bracket portion and extending in a rotational axis direction of the drum..Iaddend.

.Iadd.22. The drum type washing machine of claim 21, wherein the first bracket portion comprises an end bent in the rotational axis direction and connected to the second bracket portion..Iaddend.

.Iadd.23. The drum type washing machine of claim 21, wherein the suspension assembly comprises a main damper connected to an end of the second bracket portion that supports the weight of the drum and attenuate a vertical vibration of the drum..Iaddend.

.Iadd.24. The drum type washing machine of claim 23, wherein the suspension assembly further comprises a sub-damper that attenuates a horizontal vibration of the drum..Iaddend.

.Iadd.25. The drum type washing machine of claim 24, wherein the sub-damper is connected to the second bracket portion..Iaddend.

.Iadd.26. The drum type washing machine of claim 24, wherein the sub-damper is hinged at both ends thereof..Iaddend.

.Iadd.27. The drum type washing machine of claim 23, wherein the suspension assembly further comprises an elastic member that connects the bearing housing to a top side of the cabinet..Iaddend.

.Iadd.28. The drum type washing machine of claim 23, wherein the main damper comprises: a cylinder; a piston that reciprocates within the cylinder according to a motion of the drum to attenuate the vibration of the drum; and a spring configured to elastically support the piston..Iaddend.

.Iadd.29. The drum type washing machine of claim 28, wherein a frictional member is provided at an outer circumference of the piston that attenuates the vibration by making a frictional contact with an inner circumference of the cylinder according to a motion of the piston..Iaddend.

.Iadd.30. The drum type washing machine of claim 21, further comprising a second damper bracket, the second damper bracket comprising a third bracket portion attached to the bearing housing and extending in a radial direction of the shaft, and a forth bracket portion connected to the third bracket portion and extending in the rotational axis direction of the drum..Iaddend.

.Iadd.31. The drum type washing machine of claim 21, wherein the suspension assembly comprises at least three dampers that support the weight of the drum and attenuate a vertical vibration of the drum..Iaddend.

.Iadd.32. The drum type washing machine of claim 31, wherein the at least three dampers comprises: at least two main dampers that support the weight of the drum; and at least one rear damper that prevents the drum from inclining to one side..Iaddend.

.Iadd.33. The drum type washing machine of claim 32, wherein the suspension assembly further comprises a rear damper bracket configured to extend from the bearing housing to a center of a lower outer circumference of the tub to be joined to the at least one rear damper..Iaddend.

.Iadd.34. The drum type washing machine of claim 33, wherein each of the at least two main dampers is connected to the corresponding main damper bracket and wherein the rear damper is hinged to the rear damper bracket..Iaddend.

.Iadd.35. The drum type washing machine of claim 32, wherein the at least two main dampers each comprise: a cylinder; a piston that reciprocates within the cylinder according to a motion of the drum to attenuate the vibration of the drum; and a spring configured to support the piston and have an elastic force when the piston enters the cylinder..Iaddend.

.Iadd.36. The drum type washing machine of claim 32, wherein the rear damper comprises: a cylinder; a piston that reciprocates within the cylinder according to a motion of the drum to attenuate the vibration of the drum; and a spring configured to support the piston and have an elastic force when the piston is pulled out of the cylinder..Iaddend.

.Iadd.37. The drum type washing machine of claim 31, wherein the rear damper is configured to prevent the drum from inclining toward a front side or a rear side thereof..Iaddend.

.Iadd.38. The drum type washing machine of claim 31, wherein the suspension assembly further comprises a sub-damper that attenuates a horizontal vibration of the drum..Iaddend.

.Iadd.39. The drum type washing machine of claim 1, wherein the suspension assembly includes at least one bracket bent toward a front side of the tub from the plate and at least one damper connected to the at least one bracket, and wherein the at least one bracket extends in a rotational axis direction of the tub..Iaddend.

.Iadd.40. The drum type washing machine of claim 1, wherein the suspension assembly comprises at least two brackets and at least two dampers, wherein each of the at least two brackets extends form the plate to an outside of each lower side of an outer circumference of the tub, is bent toward a front side of the drum, and extends a predetermined length, and wherein the two dampers are connected to the two brackets, respectively..Iaddend.
Description



.Iadd.More than one reissue application has been filed for the reissue of U.S. Pat. No. 7,536,882. The reissue applications are application Ser. Nos. 13/116,059 (the present application), 13/116,077, 13/116,089, 13/116,096, 13/116,105, 13/116,114, 13/116,147, and 13/116,159, all of which are divisional reissues of U.S. Pat. No. 7,536,882..Iaddend.

This application claims the benefit of the Korean Patent Application No. 10-2006-0028358, filed on Mar. 29, 2006, and Korean Patent Application No. 10-2006-0033255, filed on Apr. 12, 2006, which are hereby incorporated by reference for all purposes as if fully set forth herein.

BACKGROUND OF THE INVENTION

1. Field of the Invention

The present invention relates to a washing machine, and more particularly, to a drum type washing machine. Although the present invention is suitable for a wide scope of applications, it is particularly suitable for facilitating laundry to be loaded and unloaded from the washing machine with a maximum capacity within a predetermined volume.

2. Discussion of the Related Art

Generally, a drum type washing machine according to a related art has the following configuration.

FIG. 1 is a cross-sectional diagram of a drum type washing machine according to the related art, and FIG. 2 is a cross-sectional diagram according to a cutting line II-II shown in FIG. 1.

Referring to FIG. 1 and FIG. 2, a drum type washing machine according to the related art consists of a cabinet 1 having a base 1a and a door 1b, a tub 2 provided within the cabinet 1 to be fixed thereto, a drum 3 rotatably provided within the tub 2 to rotate laundry m and water by a lift 3a, a motor 4 rotating the drum 3, and a spring 5, damper 6, and balancer 7 attenuating vibration transferred to the tub 2.

The drum 3 is provided with a multitude of holes 3b to enable water stored in the tub 2 to be introduced into the drum 3. The lift 3a is provided on an inner surface of the drum 3. The lift 3a is rotated together with the drum 3 to lift the laundry m loaded within the drum 3 together with the water.

The tub 2 is provided to be spaced apart from inner lateral sides of the cabinet 1. Both sides of an upper end of the tub 2 are hung within the cabinet 1 via springs 5. The damper 6 is hinged between the tub 2 and the base 1a to be supported over the base 1a. And, the springs 5 and dampers 6 attenuate the vibration carried to the cabinet 1 from the tub 2.

The door 1b of the cabinet 1 is rotatably provided to a front side 1d of the cabinet 1 to enable the laundry m to be loaded. Front sides 2d and 3d of the tub 2 and the drum 3 are provided with openings 2c and 3c to communicate with a hole (not shown in the drawings) opened by the door 1b, respectively.

A gasket 8 is provided between the front side 1d of the cabinet 1 having the door 1b assembled thereto and the front side 2d of the tub 2 to prevent leakage of the water. In particular, the gasket 8 seals the space between the inner lateral side of the cabinet 1 and the front side 2d of the tub 2.

And, the motor 4 is provided to a backside of the tub 2 to rotate the drum 3 provided within the tub 2.

However, the related art drum type washing machine has the following problems or disadvantages.

First of all, if vibration is generated from an inside of the drum 3 of the related art drum type washing machine due to the imbalance in washing or dewatering, both of the drum 3 and the tub 2 are shaken as one body. And, the springs and dampers 5 and 6 are configured to attenuate the vibration.

Since the tub 2 vibrates, the outer circumference of the tub 2 and the cabinet 1 should be sufficiently spaced apart from each other with a gap (`a` in FIG. 1 or `b` in FIG. 2) to prevent the cabinet 1 and the tub 2 from colliding with each other. This restricts the capacity or volume of the tub 2 within the cabinet 1 having a fixed size.

Secondly, since the door 1b for loading and unloading the laundry and the openings 2c and 3c of the tub and drum are provided to face the front side of the washing machine, a user has to bend or sit down to load the laundry in the washing machine. This causes inconvenience to the user in using the washing machine.

SUMMARY

Accordingly, the present invention is directed to a drum type washing machine that substantially obviates one or more of the problems due to limitations and disadvantages of the related art.

An advantage of the present invention is to provide a drum type washing machine, by which vibration may be efficiently attenuated in a manner of providing a maximum capacity within a cabinet of fixed size.

Another advantage of the present invention is to provide a drum type washing machine, by which a user does not have to bend over or sit down to load laundry in the washing machine.

Additional advantages features of the invention will be set forth in the description which follows, and in part will be apparent from the description or may be learned from practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.

To achieve these objects and other advantages and in accordance with the purpose of the invention, as embodied and broadly described herein, a drum type washing machine according to the present invention includes a cabinet forming an exterior of the drum type washing machine, a tub fixed within the cabinet, the tub having a laundry loading entrance at an outer circumference of the tub, a drum rotatably provided within the tub, the drum having an opening on a lateral side of the drum to communicate with the laundry loading entrance of the tub, a motor assembly provided next to one side of the drum to rotate the drum, and a suspension assembly provided to support a weight of the drum and attenuate vibration of the drum.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory and should not be construed as limiting the scope of the claims.

BRIEF DESCRIPTION OF THE DRAWINGS

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification illustrate embodiments of the invention and together with the description serve to explain the principles of the invention. In the drawings:

FIG. 1 is a cross-sectional diagram of a drum type washing machine according to a related art;

FIG. 2 is a cross-sectional diagram according to a cutting line II-II shown in FIG. 1;

FIG. 3 is a cross-sectional diagram of a drum type washing machine according to one embodiment of the present invention;

FIG. 4 is a cross-sectional diagram of a drum type washing machine according to another embodiment of the present invention;

FIG. 5 is an exploded perspective diagram of a tub, a drum and a suspension assembly of a drum type washing machine according to another embodiment of the present invention;

FIG. 6 is a cross-sectional diagram of a main damper shown in FIG. 5;

FIG. 7 is a cross-sectional diagram of a sub-damper shown in FIG. 5;

FIG. 8 is a cross-sectional diagram of a drum type washing machine according to a further embodiment of the present invention;

FIG. 9 is an exploded perspective diagram of a tub, a drum and a suspension assembly of a drum type washing machine according to a further embodiment of the present invention; and

FIG. 10 is a cross-sectional diagram of a rear damper shown in FIG. 9.

DETAILED DESCRIPTION

Reference will now be made in detail to an embodiment of the present invention, examples of which are illustrated in the accompanying drawings.

FIG. 3 is a cross-sectional diagram of a drum type washing machine according to one embodiment of the present invention.

Referring to FIG. 3, a drum type washing machine according to one embodiment of the present invention includes a cabinet 10 forming an exterior of the washing machine, a tube 20 fixed within the cabinet 10 to store water therein, a drum 30 rotatably provided within the tub 20, a motor assembly 40 providing a rotational force to the drum 30, and a suspension assembly 70 supporting a weight of the drum 30 and attenuating vibration of the drum 30.

In particular, the cabinet 10 forms the exterior of the drum type washing machine and includes a top cover 13 forming an upper side and a base 16.

Unlike the related art tub, the tub 20 of the present embodiment is fixed within the cabinet 10. That is, the tub 20 is directly assembled to an inner front side of the cabinet 10 of the washing machine, for example, via bolts. It should be appreciated, however, that the tub 20 may be fixed within the cabinet 10 in various ways.

A laundry loading entrance 21 is provided on an outer circumference of the tub 20 instead of being provided on the front side of the tub 20. Preferably, the laundry loading entrance 21 is provided to a position facing an upper side from a lateral side of the outer circumference to facilitate a user to load and unload the laundry. Alternatively, the laundry loading entrance 21 may be provided at another position of the outer circumference of the tub 20.

Optionally, a door 12 for loading the laundry may be provided to a position of the cabinet 10 to oppose the laundry loading entrance 21 of the tub 20.

A door assembly 31 may be provided to the drum 30 to communicate with the laundry loading entrance 21. Preferably, the laundry loading entrance 21 and the door assembly 31 are configured to be opened or closed if necessary.

Whenever the drum 30 of the drum type washing machine according to the present embodiment invention stops, it may always stop at a position where the door assembly 31 of the drum 30 and the laundry loading entrance 21 of the tub 20 may communicate with each other. Hence, a user is able to load the laundry in the drum 30 without bending over uncomfortably. And, the user is also able to look down on an inside of the drum 30, thereby enhancing the convenience in using the drum type washing machine.

The drum 30 is rotatably provided within the tub 20. The drum 30 is installed to be spaced apart from the tub 20 with a prescribed gap in-between to prevent a collision with the tub 20 due to vibration. And, at least one lift 32 may be provided to an inner circumference of the drum 30 to lift up the laundry.

The motor assembly 40 is provided on one side of the drum 30 to rotate the drum 30.

The motor assembly 40 includes a motor 41 generating a rotational force, a rotational shaft 42 transferring the rotational force of the motor 41 to the drum 30, and a bearing housing 28 rotatably supporting the rotational shaft 42.

Preferably, the motor assembly 40 is provided on one side of the drum 30 instead of being provided on both sides of the drum 30.

In particular, the rotational shaft 42 for rotating the drum 30 is provided on one side of the drum 30 only to maximize a volume within the drum 30.

The suspension assembly 70 is provided to support the weight of the drum 30 and attenuate the vibration of the drum 30.

Preferably, the suspension assembly 70 is configured to support the drum 30 by supporting the bearing housing 28.

As the drum 30 vibrates, so does the motor assembly 40. So, the suspension assembly 70 supports the bearing housing 28, thereby supporting the weight of the drum 30 and attenuating the vibration.

The above-configured suspension assembly 70 may include a damper bracket 72 extending from the bearing housing 28 and an attenuating part provided between the damper bracket 72 and the cabinet 10 to support the damper bracket 72 and attenuate the vibration simultaneously.

In the present embodiment, the attenuating part may include a damper 80 having one end connected to the damper bracket 72 and the other end connected to the base 16.

The damper bracket 72 may be configured to extend to each lower side of the outer circumference of the tub 20 from the bearing housing 28.

FIG. 3 shows the cross-section of the drum type washing machine according to one embodiment of the present invention.

And, the damper 80 of the drum type washing machine according to one embodiment of the present invention is preferably provided at a planar weight center between the entire elements (e.g., the drum 30, the motor assembly 40 for driving the drum 30, the damper bracket 72 assembled to the motor assembly 40, etc.) supported by the damper 80.

The above-configured damper 80 supports the weight of the drum 30, the weight of the motor assembly 40 for the rotation of the drum 30, and the like and plays a role in attenuating the vibration in a vertical direction. In the following description, the damper 80 attenuating the vertical vibration of the drum 30 is called a main damper 80.

And, the damper bracket 72 assembled to the main damper 80 to be supported by the main damper 80 shall be called a main damper bracket 72 in the following description.

FIG. 6 is a cross-sectional diagram of the main damper 80.

Referring to FIG. 6, the main damper 80 preferably includes a cylinder 82, a piston 83 reciprocating within the cylinder 82 according to vibration and motion of the drum 30, and a spring 85 elastically supporting the piston 83.

In this case, since the main damper 80 is provided between the main damper bracket 72 and the base 16 to support the weight of the drum 30 upwardly, a compressive weight is normally applied to the main damper 80.

Therefore, it is preferable that the spring 85 is configured to generate an elastic force when the piston 83 enters the cylinder 82.

A frictional member 84 is provided to the piston 82 to come into contact with an inner circumference of the cylinder 82. When the drum 30 vibrates, the frictional member 84 may be configured to attenuate the vibration by making a motion of friction with the inner circumference of the cylinder 82 according to a motion of the piston 83.

In particular, the weight applied to the main damper 80 is elastically supported by the spring 85 and the vibration transferred from the main damper 80 is attenuated by the frictional member 84.

Preferably, one end of the main damper 80 joined to the main damper bracket 72 includes a hinge joint 87, while the other end of the main damper 80 joined to the base 16 is configured to be fixed to the base 16 by an elastic material based rubber bushing 86.

Since the main damper 80 is joined to the main damper bracket 72 by the hinge joint 87, it may have a relative degree of freedom against a motion of the drum 30. So, it is able to prevent the vibration or motion of the drum 30 from being directly carried to the cabinet 10.

Both of the weight of the drum 30 and the weight of the motor assembly 40 for the rotation of the drum 30 are directly applied to the base 16 to which the main damper 80 is joined. To reinforce the base 16, a reinforcing part for rigidity reinforcement may be provided to the portion of the base to which the main damper 80 is joined.

The reinforcing part may be provided by the curved portion (`16a` in FIG. 5) of the base 16 to which the main damper 80 is joined. Alternatively, the reinforcing part may include a separate bracket (`116` in FIG. 9).

Referring back to FIG. 3, to prevent the drum 30 from inclining to one side, an elastic member 44 may be further provided to elastically support the backside of the drum 30. One end of the elastic member 44 is connected to an inner surface of the top cover 13 of the cabinet 10 and the other end of the elastic member 44 is connected to an upper side of the motor assembly 40.

In particular, the elastic member 44 may include a spring. One end of the elastic member 44 is hung on the inner surface of the top cover 13 and the other end of the elastic member 44 is hooked on an upper end of the bearing housing 28. Thus, the backside of the drum 30 is elastically hung on the top cover 13, whereby the drum 30 is prevented from inclining to one side.

A user loads laundry into the drum 30 via the laundry loading entrance 21, which is provided on the lateral side of the outer circumference of the tub 20, and the door assembly 31, which is provided on the lateral side of the outer circumference of the drum 30, and then executes the corresponding washing.

Vibration is generated from the drum 30 in the course of washing and then attenuated by the main damper 80 through the main damper bracket 72. Moreover, the front side of the tub 20 is directly assembled to the front inside of the cabinet 10 to be fixed thereto. So, if vibration or shock is delivered to the tub 20 assembled in one body to the cabinet 10, the weight of the cabinet 10 itself being added to raise the rigidity of the tub 20 rather than the tub 20 itself is shaken by the vibration or shock. Hence, it is able to enhance the overall vibration characteristics of the drum type washing machine.

Another embodiment of the present invention is explained as follows.

In the aforesaid embodiment of the present invention, the suspension assembly 70 supporting the drum 30 includes a pair of the main dampers 80. Yet, in the present embodiment, a suspension assembly 70 may further include a sub-damper attenuating horizontal vibration of a drum 30.

A drum type washing machine according to another embodiment of the present invention is shown in FIGS. 4 to 7.

In describing a drum type washing machine according to another embodiment of the present invention, the same names and reference numbers shall be used for the same parts of the former embodiment.

First of all, a drum type washing machine according to another embodiment of the present invention includes a cabinet 10 forming an exterior of the drum type washing machine, a tub 20 provided within the cabinet 10 to be directly assembled thereto, a drum 30 rotatably provided within the tub 20, a motor assembly 40 provided in rear of the tub 20 to include a motor 41 rotating the drum 30, a bearing housing 28 configuring a backside of the tub 20 to support the rotating shaft 42 of the motor 41, a shock absorbing means 50 provided between the bearing housing 28 and the tub 20 for sealing an internal space of the tub 20 and for absorbing vibration or shock transferred to the tub 20 from the motor 40, and a suspension assembly 60 supporting the drum to attenuate the vibration or shock transferred to the bearing housing 28.

A door 12 is provided on a lateral outer circumference of the cabinet 10 instead of being provided on a front side of the cabinet 10. And, a base 16 defines a bottom side of the cabinet 10.

The tub 20, as shown in FIG. 4, includes a tub body 22 directly assembled to an inside of a front side 11 of the cabinet 10, the tub body 22 having a laundry loading entrance 21 at a lateral outer circumference to communicate with the door 12 of the cabinet 10, a tub cover 24 assembled to a backside of the tub body 22 to enclose the drum 30, the tub cover 24 having an opening 23 at its center, a tub bracket 26 closing the opening 23 of the tub cover 24, and the bearing housing 28 assembled to a backside of the tub bracket 26 to configure the motor assembly rotating the drum, the bearing housing 28 configured to support the rotating shaft 42.

The tub body 22, as shown in FIG. 4 and FIG. 5, is fixed to the cabinet 10 by being locked to the inside of the front side of the cabinet 10 by screws 25a. The tub cover 24 is assembled by accommodating the drum 30 therein. In particular, the tub cover 24 is assembled by being locked to the locking holes 22a and 24a on the outer circumferences of the tub body 22 and the tub cover 24 by screws 25c. The opening 23 of the tub cover 24 is sealed by the tub bracket 26 and the shock absorbing means 50. The bearing housing 28 is assembled to the backside of the tub bracket 26 by screws 25b. In this case, the bearing housing 28 is provided with bearing (not shown in the drawings) to enable the rotational shaft 42 to be smoothly rotated and the rotational shaft 42 is supported by the bearing.

The shock absorbing means 50 is provided to absorb vibration or shock generated from the drum 30 and the motor 40 in performing washing or dewatering. The shock absorbing means 50 is formed of an elastic material that contracts or expands against the vibration or shock. And, the shock absorbing means 50 may include a backside gasket provided along an outer circumference of the tub bracket 26 to seal the opening 23. In the present embodiment, the shock absorbing means 50 is implemented by the backside gasket that simultaneously achieves both a sealing function and a shock absorbing function between the tub cover 24 and the tub bracket 26.

Alternatively, the shock absorbing means 50 may be individually configured according to each of the functions. In particular, a sealing member (not shown in the drawings) having the sealing function is inserted between the tub cover 24 and the tub bracket 26 and the shock absorbing means 50 is provided between the bearing housing 28 and the tub bracket 26.

Hence, even if the vibration or shock is generated from the drum 30 or the motor assembly 40 joined to the drum 30, since the shock absorbing means 50 is provided between the drum 30 and the tub 20, the vibration or shock is delivered to the tub 20 after having been buffered via the shock absorbing means instead of being directly carried to the tub 20. The vibration or shock delivered to the tub 20 is then attenuated or reduced by each rigidity and weight of the tub 20 and the cabinet 10.

The motor 40 is assembled to the backside of the bearing housing 28. The rotational shaft 42 of the motor 40 passes through both of the bearing housing 28 and the tub bracket 26 to be fixed to the backside of the drum 30.

The drum 30 is rotated by the rotating shaft 42 of the motor 40. And, at least one lift 32 is provided to an inner surface of the drum 30 to lift a laundry. And, a liquid balancer 34 is provided to a front side of the drum 30. In this case, the liquid balancer 34 plays a role in balancing the drum 30 to suppress the vibration of the drum 30.

The suspension assembly 60 is provided to support the weight of the drum 30 and attenuate the vibration of the drum 30.

In the present embodiment, the suspension assembly 60 may include a damper bracket 62 extending from the bearing housing 28 and an attenuating part supporting the damper bracket 66 to support the drum 30.

And, the attenuating part may include a pair of main dampers 80 supporting the weight of the drum 30 to attenuate the vertical vibration of the drum 30 and a sub-damper 90 attenuating the horizontal vibration of the drum 30.

Moreover, the damper bracket 62 may include a pair of main damper brackets 64 joined to a pair of the main dampers 80, respectively and a sub-damper bracket 66 joined to the sub-damper 90.

In particular, the main damper bracket 64 joined to the main damper 80 is configured to have one end to be fixed to one of both lower corner of the bearing housing 28 and the other end bent toward a front side of the tub 20. And, the main damper 80 is joined to the corresponding portion bent toward the front side of the tub 20.

Preferably, the main damper 80 is installed vertical to the base 16. This is because the main damper 80 supports the vertical weights of the drum 30, bearing housing 28, and motor 40 and also plays a role in attenuating the vertical vibration.

In particular, a pair of the main damper brackets 64 are provided to both of the lower corners of the bearing housing 28 toward the front side of the tub 20 and a pair of the main dampers 80 are joined to a pair of the main damper brackets 64, respectively.

One end of the sub-damper bracket 66 joined to the sub-damper 90 is fixed to a center of a lower side of the bearing housing 28, while the other end extends to a prescribed length toward the front side of the tub 20. And, the sub-damper 90 is joined to the portion of the sub-damper bracket 66 extending toward the front side of the tub 20.

In this case, the sub-damper 90 is configured to attenuate the horizontal vibration of the drum 30. In particular, the sub-damper 90 is preferably configured to incline a front to rear direction of the drum 30 to attenuate the front to rear direction vibration generated from over-vibration of the drum 30.

Alternatively, the sub-damper 90 may be provided in a right to left direction to attenuate the right to left vibration.

Since the configuration of the main damper 80 is identical to that of the aforesaid main damper 80 of the former embodiment of the present invention, details of the main damper 80 are omitted in the following description.

FIG. 7 is a cross-sectional diagram of the sub-damper 90 according to an embodiment of the present invention.

Referring to FIG. 7, the sub-damper 90 includes a cylinder 92 having a hollow configuration, a piston 93 reciprocating within the cylinder 92 according to a motion of the drum 30, and a frictional member 94 provided to the piston 93 to attenuate vibration energy by frictional movement against an inner surface of the cylinder 92.

Preferably, the sub-damper 90 is provided between the sub-damper bracket 66 and the base 16 configuring the bottom side of the cabinet 10. More preferably, both ends of the sub-damper 90 are joined by hinges 97 thereto.

Therefore, if the drum 30 vibrates back and forth, the sub-damper 90 contracts and expands in a direction of the vibration of the drum 30 to attenuate the corresponding vibration.

Similar to the former embodiment, the present embodiment may further include a reinforcing part provided a portion for joining the main damper 80 or the sub-damper 90 to the base 16 of the cabinet 10 to reinforce rigidity.

In this case, the reinforcing part may include a curved part 16a provided to the portion for joining the main damper 80 or the sub-damper 90 to the cabinet 10 or a separate bracket (`116` in FIG. 9).

Referring to FIG. 4, an elastic member 44, such as a coil spring, a string made of rubber and the like, may be provided to an inner surface of the top cover 13 forming a topside of the cabinet 10 to elastically hang the bearing housing 28. In particular, the elastic member 44 elastically supports a rear portion of the drum 30 to prevent the drum 30 from inclining to one side.

Therefore, the vibration or shock generated from the drum 30 is transferred to the rotational shaft 42 of the motor connected to the drum 30 and the bearing housing 28 supporting the rotational shaft 42. In this case, the transferred vibration or shock is primarily absorbed by the contraction or expansion of the shock absorbing means 50 and the rest of the vibration or shock is then delivered to the main dampers 90 and the sub-damper via the main damper brackets 64 and the sub-damper bracket 66, respectively. So, the vibration or shock generated from the drum 30 may be reduced in a manner that the main dampers 80 attenuate the vertical vibration of the vibration delivered to the main dampers 80 and the sub-damper 90 while the sub-damper 90 attenuates the horizontal vibration of the vibration delivered to the main dampers 80 and the sub-damper 90.

Hence, the horizontal vibration generated from the drum 30 is attenuated as well as the vertical vibration, whereby the drum 30 may be supported more stably.

A drum type washing machine according to a further embodiment of the present invention is explained as follows.

FIGS. 8 to 10 are diagram of a drum type washing machine according to a further embodiment of the present invention.

In describing a drum type washing machine according to a further embodiment of the present invention, the same names and reference numbers shall be used for the same parts of the former embodiment.

Referring to FIGS. 8 to 10, a drum type washing machine according to a further embodiment of the present invention includes a cabinet 10 defining an exterior of the drum type washing machine, a tub 20 fixed within the cabinet 10 to store water therein, a drum 30 rotatably provided within the tub 20, a motor assembly 140 provided next to one side of the drum 30 to rotate the drum 30, and a suspension assembly 160 provided to support a weight of the drum 30 and attenuate vibration of the drum 30.

A laundry loading entrance 21 is provided to an outer circumference of the tub 20 to load and unload laundry. And, a door assembly 31 is provided to a specific portion of the drum 30 to communicate with the laundry loading entrance 21.

Moreover, a door 12 may be provided to a specific portion of the cabinet to communicate with the laundry loading entrance 21.

Since the cabinet 10, the tub 20, the drum 30 and the motor assembly 140 of the drum type washing machine according to the further embodiment of the present invention are identical to those of the drum type washing machine according to the former embodiment of the present invention, the corresponding descriptions are referred to in the previous description for convenience of explanation.

Meanwhile, the suspension assembly 160 of the drum type washing machine according to the further embodiment of the present invention includes a damper bracket joined to the bearing housing 128 and an attenuating part joined to the damper bracket to attenuate vibration. In this case, the attenuating part supports a weight of the drum 30 and a weight of the motor assembly 140 driving the drum 30.

The attenuating part may include a main damper 180 supporting the weight of the drum 30 to attenuate vertical vibration and a rear damper 182 attenuating the vertical vibration of the drum to prevent the drum 30 from inclining to one side.

And, the damper bracket may include at least one main damper bracket 164 joined to the main damper 180 and a rear damper bracket 168 joined to the rear damper 182.

Preferably, the at least one main damper bracket 164 joined to the main damper 180 extends from the bearing housing 128 to an outside of an outer circumference of the tub 20 toward each lower lateral side of the tub 20 in a direction of a diameter of the tub 20 and then extends toward a front side of the tub 20 to a prescribed length. And, the main damper 180 is preferably joined to an end portion of the extending portion of the main damper bracket 164.

Preferably, the main damper 180 is provided vertical to the base 16. This is because the main damper 180 plays a role in supporting vertical weights of the drum 30, bearing housing 128 and motor assembly 140 and attenuating the vertical vibration.

In particular, a pair of main damper brackets 164 are provided to extend from both lateral sides of the bearing housing 128 toward the front side of the tub 20, respectively. And, a pair of main dampers 180 are provided to be joined to a pair of the main damper brackets 164, respectively.

Since each of the above-configured main dampers 180 has the same configuration of the aforesaid main damper 80 of the former embodiment of the present invention, its details are omitted in the following description.

Preferably, one end of the rear damper bracket 168 joined to the rear damper 182 is fixed to a lower center of the bearing housing 128 and the other end is configured to extend to a prescribed length toward the base 16. And, the rear damper 182 is vertically joined to an end portion of the other end of the rear damper bracket 168.

FIG. 8 is a cross-sectional diagram of a drum type washing machine according to a further embodiment of the present invention. For convenience of explanation, the main damper bracket 164 is represented as a perspective diagram instead of a cross-sectional diagram.

The main damper 180, as shown in FIG. 9, is provided under each of both of the lower sides of the drum 30 and the rear damper 182 is provided under a rear side of the drum 30. In this case, since a pair of the main dampers 180 are provided under both of the lower sides of the drum 30, the pair of main dampers 180 and the rear damper 182 are provided to configure a triangle.

Namely, three dampers are provided to attenuate the vertical vibration of the drum 30.

The rear damper 182 is the element that prevents the drum 30 from inclining to a front or rear side of the drum 30. Generally, the drum 30 tends to incline to one side owing to a center of weight. Since the heavy motor assembly 140 is normally provided next to the backside of the drum 30, the center of weight of the drum 30 lies in a rear part of the drum 30 rather than a central part of the drum 30 when the drum 30 is empty.

Hence, a pair of the main dampers 180 and the rear damper 182 prevent the drum 30 from drooping while supporting the weight of the drum 30.

In this case, the function and configuration of the rear damper 182 may vary according to an installed position of the corresponding main damper 180.

In particular, if the main damper 180 is provided to a position enabling the empty drum 30 to keep its balance, when laundry and water are loaded in the drum 30, the drum 30 inclines forward while a rear side of the drum 30 relatively rises upward.

In this case, the rear damper 182, as shown in FIG. 10, preferably includes a cylinder 183, a piston 185 reciprocating within the cylinder 183 to attenuate vibration, a frictional member 186 attached to the piston 185, and a spring 184 supporting the piston 185 to provide an elastic force when the piston 185 is pulled out, thereby elastically pulling down the rear side of the drum 30 not to rise. Alternatively, the rear damper 182 may be configured identical to that shown in FIG. 6 to provide an elastic force when the spring 85 is pulled.

If the rear side of the drum 30 is designed to fall when laundry and water are loaded in the empty drum 30 tending to incline backward, the rear damper 182, as shown in FIG. 6, preferably includes the cylinder 82, the piston 83 reciprocating within the cylinder 82 to attenuate vibration, and the spring 85 supporting the piston 83 to activate an elastic force when the piston 83 enters the cylinder 82. In particular, the rear damper 182 elastically supports the rear side of the drum 30 to prevent the rear side of the drum 30 from falling downward.

In this case, positions for installing the main dampers 180 and the rear damper 182 are preferably decided to enable a center of weight working by the drum 30, the motor assembly 140, and the like to exist within the triangle configured by the main dampers 180 and the rear damper 182.

Although the other end portions of the side for joining the main damper brackets 164 of the main dampers 180 and the rear damper 182 and the sub-damper bracket 166 thereto may be directly joined to the base 16, the forming parts (`16a` in FIG. 5) or the reinforcing plates 116 of the former embodiments may be provided to prevent the transformation of the base 16.

Meanwhile, the suspension assembly of the present embodiment may further include sub-dampers 190a and 190b attenuating the horizontal vibration of the drum 30 in addition to the main dampers 180 and the rear damper 182 that attenuate the vertical vibration by supporting the weight of the drum 30.

The horizontal vibration of the drum 30 includes a front-to-rear vibration of the drum 30 and a right-to-left vibration of the drum 30. And, the horizontal vibration tends to be generated in case that the drum 30 is in an over-vibrating state.

To attenuate the horizontal vibration, the sub-dampers 190a and 190b may be provided to incline in a front-to-rear or right-to-left direction.

In particular, if the sub-damper 190a is provided to incline in the front-to-rear direction, the front-to-rear horizontal vibration of the drum 30 will be attenuated. If the sub-damper 190b is provided to incline in the right-to-left direction, the right-to-left horizontal vibration of the drum 30 will be attenuated.

Of course, either the sub-damper 190a or the sub-damper 190b may be selectively provided to incline in either the front-to-rear direction or the right-to-left direction. Alternatively, both of the sub-dampers 190a and 190b may be provided to incline in the front-to-rear direction and the right-to-left direction, respectively.

Preferably, one end of the sub-dampers 190a and 190b are hinged to one side of the main damper bracket 164 and the other end of the sub-dampers 190a and 190b are hinged to the base 16.

A sub-damper bracket 166 joined to the sub-dampers 190a and 190b may be separately provided. The sub-damper bracket 166 may be configured to be joined to the main damper bracket 164. Alternatively, the sub-damper bracket (not shown in the drawing) may be configured to be directly joined to the bearing housing 128.

The above-configured sub-dampers 190a and 190b may have the same configurations of the aforesaid sub-dampers 190a and 190b of the former embodiment of the present invention.

In the drum type washing machine according to the further embodiment of the present invention, since the tub 20 is directly fixed to the cabinet 10 so as not to fluctuate, the tub 20 may avoid colliding with the cabinet 10. Hence, a diameter of the tub 20 may be increased to extend a capacity or volume of the drum 30.

Since one side of the rotating drum 30 is supported instead of both sides of the rotating drum 30, an internal volume of the drum 30 may be further extended and the number of parts may be reduced. Hence, productivity may be enhanced.

Since the drum 30 is supported by three points using the main dampers 180 and the rear damper 182, the drum 30 may be prevented from inclining to one side according to the variation of the center of weight attributed to the loaded laundry and water.

Since the sub-dampers 190a and 190b are provided to attenuate the front-to-rear and right-to-rear directional vibrations, it is able to effectively suppress the horizontal vibration of the drum 30.

Accordingly, the embodiment of the present invention provides the following effects or advantages.

First of all, since a tub is directly fixed to a cabinet so as not to fluctuate, it is able to increase a diameter of the tub. Hence, a volume or capacity of a drum may be considerably increased.

Secondly, since a laundry loading entrance and a door assembly are provided on a lateral side of an outer circumference of a drum to load and unload laundry in the drum instead of a front side of the drum, a user does not bend over to load the laundry in the drum and is able to conveniently look down on an inside of the drum. Hence, the present invention enhances user's convenience.

Thirdly, a rotational shaft and a motor assembly to rotate a drum are provided to one side of the drum only and one side of the drum is supported only. So, it is unnecessary to support both ends of the drum. Hence, a volume or capacity of the drum may be increased.

Fourthly, a front side of a tub is directly joined and fixed to an inner surface of a front side of a cabinet. In case that vibration or shock is delivered to the tub assembled in one body of the cabinet, a weight of the cabinet is added to increase rigidity of the tub rather than the tub shaking because of the vibration or shock. Hence, an overall vibration characteristic of a drum type washing machine may be enhanced.

It will be apparent to those skilled in the art that various modifications and variations may be made without departing from the spirit or scope of the inventions. Thus, it is intended that the claims cover the modifications and variations of this invention provided they come within the scope of the claims and their equivalents.

* * * * *

File A Patent Application

  • Protect your idea -- Don't let someone else file first. Learn more.

  • 3 Easy Steps -- Complete Form, application Review, and File. See our process.

  • Attorney Review -- Have your application reviewed by a Patent Attorney. See what's included.