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United States Patent Application 20170051748
Kind Code A1
HE; XIANGMING ;   et al. February 23, 2017

UNIVERSAL ROTARY FAN

Abstract

A universal rotary fan is provided including a supporting mechanism, a cylinder, a front net cover, a rear net cover, fan blades and a control mechanism, wherein the cylinder is mounted on the supporting mechanism; the front net cover and the rear end cover are arranged respectively on the front end face and the rear end face of the cylinder, the fan blades are located inside the cylinder; and the control mechanism is electrically connected with the fan blades. The supporting mechanism includes a support fixedly connected with the cylinder, and a rotating mechanism fixedly connected with the bottom end of the support. The rotating mechanism includes a bottom support, a pedal arranged at one end of the bottom support, a plug pin, and a turnplate body matched and connected with the plug pin, and the turnplate body is fixedly connected with the bottom of the cylinder.


Inventors: HE; XIANGMING; (JIANGMEN CITY, CN) ; LIN; GUANGLIAN; (JIANGMEN CITY, CN)
Applicant:
Name City State Country Type

JIANGMEN KEYE ELECTRIC APPLIANCES MANUFACTURING CO., LTD

Jiangmen City

CN
Family ID: 1000002121622
Appl. No.: 15/232868
Filed: August 10, 2016


Current U.S. Class: 1/1
Current CPC Class: F04D 25/08 20130101; F04D 29/325 20130101; F04D 29/522 20130101; F04D 19/002 20130101
International Class: F04D 25/08 20060101 F04D025/08; F04D 29/52 20060101 F04D029/52; F04D 29/32 20060101 F04D029/32; F04D 19/00 20060101 F04D019/00

Foreign Application Data

DateCodeApplication Number
Aug 17, 2015CN201510505344.2

Claims



1. A universal rotary fan, including a supporting mechanism, a cylinder mounted on the supporting mechanism, a front net cover and a rear net cover arranged respectively on a front end face and a rear end face of the cylinder, fan blades are located inside the cylinder, and a control mechanism electrically connected with the fan blades, wherein, the supporting mechanism includes a support fixedly connected with the cylinder, and a rotating mechanism fixedly connected with the bottom end of the support; the rotating mechanism includes a bottom support, a pedal arranged at one end of the bottom support, a plug pin connected with the pedal through a steel wire, and a turnplate body matched connected with the plug pin, and the turnplate body is fixedly connected with a bottom of the cylinder.

2. The universal rotary fan according to claim 1, wherein a bottom of the turnplate body is in a shape of a round flat-bottom vessel, and a wall of the turnplate body is provided with a plurality of positioning holes that are matched with the plug pin.

3. The universal rotary fan according to claim 2, the rotating mechanism further includes a turnplate base, wherein a middle portion of the turnplate base is concave inwards and matched with an outside of the turnplate body, and a through hole matched with the plug pin is formed in a side, where the plug pin is located, of the wall formed through the inward concave middle portion of the turnplate base.

4. The universal rotary fan according to claim 3, wherein a plug pin guide base is sheathed outside the plug pin, clamped outside the through hole in the turnplate base.

5. The universal rotary fan according to claim 1, wherein the center between the turnplate body and the turnplate base is provided with central through holes that are interconnected, through which both of them can be coaxially connected with each other.

6. The universal rotary fan according to claim 5, wherein the turnplate body and the turnplate base are coaxially connected through a bolt and a nut.

7. The universal rotary fan according to claim 6, wherein two wheels are coaxially arranged at an end, away from the pedal, of the bottom support.

8. The universal rotary fan according to claim 5, wherein two supporting legs are arranged at the bottom of the other end, opposite to the two wheels, of the bottom support, and the bottom surfaces of the two supporting legs and the bottom surfaces of the two wheels are located on the same horizontal plane.
Description



CROSS-REFERENCE TO RELATED APPLICATION

[0001] This application claims priority to CN 201510505344.2, having a filing date of Aug. 17, 2015, the entire contents of which are hereby incorporated by reference.

FIELD OF TECHNOLOGY

[0002] The following relates to the field of electrical equipment, in particular to an industrial universal rotary fan.

BACKGROUND

[0003] An electric fan is a household appliance to accelerate air circulation by driving fan blades to rotate by means of a motor, and mainly used for cooling and refreshing, summer heat relief and air circulation, and widely applied to places such as home, offices, stores, hospitals and hotels. The electric fan is mainly composed of a fan head, fan blades, net covers, a support frame, a control unit and other components. The fan head includes a motor, a front end cover, a rear end cover, an oscillating air supply mechanism and the like.

[0004] An industrial cylindrical fan generally supplies air in a fixed direction. When the air supply direction needs to be changed, a user usually needs to manually lift up the whole fan to adjust the setting angle of the fan.

[0005] However, the large volume and bulkiness of the industrial cylindrical fan makes it strenuous to lift, yet it may be necessary to change the air supply direction; that is, it is inconvenient to change the air supply direction.

SUMMARY

[0006] An aspect relates to providing a universal rotary fan with the air supply direction capable of being changed conveniently and effortlessly.

[0007] The aspect is achieved by the following technical solution. The universal rotary fan includes a supporting mechanism, a cylinder, a front net cover, a rear net cover, fan blades and a control mechanism, wherein the cylinder is mounted on the supporting mechanism; the front net cover and the rear net cover are arranged respectively on the front end face and the rear end face of the cylinder; the fan blades are located inside the cylinder; and the control mechanism is electrically connected with the fan blades. The supporting mechanism includes a support fixedly connected with the cylinder, and a rotating mechanism fixedly connected with the bottom end of the support. The rotating mechanism includes a bottom support, a pedal arranged at one end of the bottom support, a plug pin connected with the pedal through a steel wire, and a turnplate body matched and connected with the plug pin. The turnplate body is fixedly connected with the bottom of the cylinder.

[0008] Compared with the known art, the universal rotary fan of embodiments of the present invention is provided with a rotating mechanism at the bottom of the fan, so that a user can adjust the air supply direction of the fan by stepping on the pedal and rotating the cylinder, and positioning the universal rotary fan simply by releasing the pedal while the fan is in an ideal position. Thus the adjustment of the air supply angle of the fan is achieved conveniently, rapidly and effortlessly.

[0009] Further, the bottom of the turnplate body is in the shape of a round flat-bottom vessel, and the wall of the turnplate body is provided with a plurality of positioning holes that are matched with the plug pin, so that the cooperative work of the plug pin and the turnplate body can be achieved by setting the positioning holes. Specifically, when the fan operates normally, the plug pin penetrates through one positioning hole in the turnplate body; when a user steps on the pedal, the steel wire connected with the pedal is pulled by the pedal to drive the plug pin that is connected with the other end of the steel wire to move backwards, and accordingly the plug pin is separated from the positioning hole in the turnplate body. After the cylinder is adjusted in a proper angle, the pedal can be released, and thereby the plug pin moves forward and penetrates through the positioning hole that corresponds to this position, and thus positioning of the universal rotary fan is completed. The positioning holes in the turnplate body can be arranged according to specific requirements; that is, the positioning holes can be evenly distributed in the wall of the bottom of the turnplate body, and can also be located in specific positions corresponding to specific rotation angles. The number of positioning holes is determined by the precision of required adjustment angles. The more the positioning holes are and the more densely the positioning holes are distributed, the more finely the air supply direction of the fan can be tuned.

[0010] Further, the rotating mechanism further includes a turnplate base, wherein the middle portion of the turnplate base is concaved inwards and matched with the outside of the turnplate body, and a through hole matched with the plug pin is formed in the side, where the plug pin is located, of the wall formed through the inward concaved middle portion of the turnplate base. The shape, size and height of the through hole in the wall of the turnplate base are the same as those of the positioning holes in the turnplate body. When the cylinder and the turnplate body, that is fixedly connected with the cylinder, are rotated, and any positioning hole coincides with the through hole of the turnplate base, releasing the pedal can make the plug pin penetrate through the through hole and further through the positioning hole in the corresponding position to stop the turnplate from rotating. Thus, the universal rotary fan is positioned.

[0011] Further, a plug pin guide base is sheathed outside the plug pin, clamped outside the through hole of the turnplate base, and is coaxial with the positioning holes in the turnplate body. Since the plug pin guide base is sheathed outside the plug pin, and the cross section of the plug pin guide base is larger than that of the through hole in the turnplate base, the plug pin guide base is clamped outside the through hole in the turnplate base all the time in the reciprocating movement of the plug pin. In this way, the direction of motion of the plug pin is stable, and the situation where the plug pin deviates from the movement direction and consequentially cannot be inserted into the corresponding positioning hole is avoided. When the cylinder and the turnplate body that is fixedly connected with the cylinder are rotated, and any positioning hole coincides with the through hole of the turnplate base, releasing the pedal can make the plug pin penetrate through the through hole and further through the positioning hole in the corresponding position to stop the turnplate from rotating, and thus the universal rotary fan is positioned.

[0012] Further, the center between the turnplate body and the turnplate base is provided with central through holes that are interconnected, through which both of them can be coaxially connected with each other. In this way, the turnplate body can rotate relative to the turnplate base, and both of them cannot be separated from each other in the axial direction.

[0013] Further, the turnplate body and the turnplate base are coaxially connected through a bolt and a nut. Specifically, a ball groove and a ball are arranged at the joint of the turnplate body and the turnplate base so that the turnplate body can smoothly rotate relative to the turnplate base.

[0014] Further, two wheels are coaxially arranged at the end, away from the pedal, of the bottom support. In this way, the universal rotary fan can be transported conveniently.

[0015] Further, two supporting legs are arranged at the bottom of the other end, opposite to the two wheels, of the bottom support, and the bottom surfaces of the two supporting legs and the bottom surfaces of the two wheels are located on the same horizontal plane. In this way, the operating stability of the fan can be guaranteed.

[0016] For better understanding and implementation, embodiments of the present invention will be described in detail with reference to the following drawings.

BRIEF DESCRIPTION

[0017] Some of the embodiments will be described in detail, with reference to the following figures, wherein like designations denote like members, wherein:

[0018] FIG. 1 is a stereoscopic structure schematic diagram of the universal rotary fan;

[0019] FIG. 2 is a rear-view structure schematic diagram of the universal rotary fan;

[0020] FIG. 3 is a structure decomposition schematic diagram of the rotating mechanism 120;

[0021] FIG. 4 is a partial section-view schematic diagram of a plug pin, in an open state, of the universal rotary fan;

[0022] FIG. 5 is an enlarged section-view schematic diagram of B in FIG. 4;

[0023] FIG. 6 is a partial section-view schematic diagram of the plug pin, in a closed state, of the universal rotary fan;

[0024] FIG. 7 is an enlarged section-view schematic diagram of C in FIG. 6;

[0025] FIG. 8 is a working-state schematic diagram of the universal rotary fan when the universal rotary fan rotates counterclockwise; and

[0026] FIG. 9 is a working-state schematic diagram of the universal rotary fan when the universal rotary fan rotates clockwise.

DETAILED DESCRIPTION OF THE EMBODIMENTS

[0027] FIG. 1 is the stereoscopic structure schematic diagram of the universal rotary fan of an embodiment of the present invention, and FIG. 2 is the rear-view structure schematic diagram of the universal rotary fan of an embodiment of the present invention. The universal rotary fan includes a supporting mechanism 100, a cylinder 200, a front net cover 300 (not shown in FIG. 1 and FIG. 2), a rear net cover 400, fan blades 500 and a control mechanism 600, wherein the cylinder 200 is mounted on the supporting mechanism 100; the front net cover 300 and the rear net cover 400 are arranged respectively on the front end face and the rear end face of the cylinder 200; the fan blades 500 are located inside the cylinder; and the control mechanism 600 is electrically connected with the fan blades 500. The supporting mechanism 100 used for supporting and installing other fan components, includes a support 110 used for fixedly installing the cylinder 200, and a rotating mechanism 120 fixedly connected with the bottom end of the support 110 and used for supporting and rotating the fan. The control mechanism 600 is used for driving the fan blades 500 to supply air.

[0028] FIG. 3 is the structure decomposition schematic diagram of the rotating mechanism 120. The rotating mechanism 120 includes a bottom support 121, a pedal 122 arranged at one end of the bottom support, a plug pin 124 connected with the pedal 122 through a steel wire 123, and a turnplate body 125 matched and connected with the plug pin 124. The turnplate body 125 is fixedly connected with the bottom of the cylinder 200. In this embodiment, the bottom of the turnplate body 125 is in the shape of a round flat-bottom vessel, and the wall of the turnplate body 125 is provided with a plurality of positioning holes 1251 that are matched with the plug pin 124; the top of the turnplate body 125 is in the shape of a square support, and the walls on the four edges thereof are fixedly connected with the cylinder 200. The rotating mechanism 120 further includes a turnplate base 126 fixedly installed on the middle portion of the bottom support, wherein the middle portion of the turnplate base 126 is concaved inwards and matched with the outside of the turnplate body 125, and a through hole matched with the plug pin 124 is formed in the side, where the plug pin 124 is located, of the wall formed through the inwards concaved middle portion of the turnplate base 126. A plug pin guide base 127 is sheathed outside the plug pin 124 and clamped outside the through hole of the turnplate base 126.

[0029] The positioning holes 1251 in the turnplate body 125 can be arranged according to specific requirements; that is, the positioning holes 1251 can be evenly distributed in the wall of the bottom of the turnplate body 125, and can also be located in specific positions corresponding to specific rotation angles; the number of the positioning holes 1251 is determined by the precision of required adjustment angles. The more the positioning holes 1251 are and the more densely the positioning holes 1251 are distributed, the more finely the air supply direction of the fan can be tuned. In this embodiment, the positioning holes 1251 are evenly distributed in the wall of the bottom of the turnplate body 125.

[0030] For achieving the purpose that the turnplate body 125 can rotate relative to the turnplate base 126, the turnplate body 125 and the turnplate base 126 are coaxially connected and cannot be separated in the axial direction. Specifically, the center between the turnplate body 125 and the turnplate base 126 is provided with central through holes that are interconnected, through which both of them can be coaxially connected with each other through a bolt and a nut. Preferably, a ball groove (not shown in FIG. 3) and a ball (not shown in FIG. 3) are arranged at the joint of the turnplate body 125 and the turnplate base 126 so that the turnplate body 125 can smoothly rotate around the central axis relative to the turnplate base 126. The structures of the ball groove and the ball are the same as those in the prior art, and can be arranged by taking the existing rotary structure as the reference.

[0031] Furthermore, for moving the universal rotary fan conveniently, two wheels 128 are coaxially arranged at the end, away from the pedal 122, of the bottom support 121 of the universal rotary fan. For keeping the universal rotary fan stable during its operation, two supporting legs 129 are arranged at the bottom of the other end, opposite to the two wheels 128, of the bottom support 121, and the bottom surfaces of the two supporting legs 129 and the bottom surfaces of the two wheels 128 are located on the same horizontal plane. In this way, the bottom of the universal rotary fan is kept stable when the universal rotary fan operates, and the heights of the front end and the rear end of the bottom support 121 are consistent; when the universal rotary fan needs to be moved, a user just needs to incline the fan towards the wheels 128, and then the fan can be pushed or pulled conveniently and effortlessly.

[0032] FIG. 4 is the partial section-view schematic diagram of the plug pin, in the open state, of the universal rotary fan of an embodiment of the present invention; FIG. 5 is the enlarged section-view schematic diagram of the B part in FIG. 4; FIG. 6 is the partial section-view schematic diagram of the plug pin, in the closed state, of the universal rotary fan of the present invention; FIG. 7 is the enlarged section-view schematic diagram of a C part in FIG. 6. A description of the working principle of the universal rotary fan is given as follows with the foregoing accompanying drawings.

[0033] When the universal rotary fan operates normally, the plug pin 124 is in closed state, and is inserted into the through hole in the turnplate base 126 and the positioning hole 1251, which is located in the same axis as the through hole in the turnplate body 125, so that the universal rotary fan can supply air in one fixed direction. When the air supply direction of the fan needs to be adjusted, the user steps on the pedal 122, so that the pedal 122 pulls the steel wire 123 that is fixedly connected with the pedal 122 outwards, and the steel wire 123 drives the plug pin 124 that is fixedly connected with the other end of the steel wire 123 to move outwards, thus making the plug pin 124 separated from the positioning hole 1251 in the turnplate body 125 and disengaged from the through hole in the turnplate base 126. At the moment, the user can rotate the cylinder 200 clockwise or counterclockwise, which drives the turnplate body 125 fixedly connected with the cylinder 200 to rotate around the central axis. When the cylinder 200 and the turnplate body 125 are rotated to the ideal air supply angle, the positioning hole 1251 in the corresponding position shall be aligned to the plug pin guide base 127. The plug pin 124 is inserted into the positioning hole 1251 after the pedal 122 is released, to position the universal rotary fan, and thus adjustment of the air supply angle of the fan is completed.

[0034] The positioning holes 1251 can be arranged according to actual requirements, and in this embodiment, the positioning holes 1251 are evenly distributed in the wall of the bottom of the turnplate body 125. The more the positioning holes 1251 and the more densely the positioning holes 1251 are distributed, the more finely the air supply direction of the fan can be tuned. Therefore, more of positioning holes 1251 enable the user to adjust the air supply direction more easily, and to fix the air supply direction at any proper position by releasing the pedal 122.

[0035] In other embodiments, the positioning holes 1251 can be set only at fixed angles so that the fan can be fixed only in certain air supply angles. Generally, the fixed positions are the most common positions, to shorten the time required for adjusting the air supply direction of the fan. The user can choose to directly rotate the fan to the required angle position, thus positioning the universal rotary fan conveniently and rapidly.

[0036] FIG. 8 is the working-state schematic diagram of the universal rotary fan of an embodiment of the present invention when the universal rotary fan rotates counterclockwise; FIG. 9 is the working-state schematic diagram of the universal rotary fan of an embodiment of the present invention when the universal rotary fan rotates clockwise. In the universal rotary fan, the cylinder 200 can be rotated clockwise and counterclockwise, and the cylinder 200 and the turnplate body 125 can be rotated freely without position limitations as long as the user keeps stepping on the pedal 122 until the cylinder 200 and the turnplate body 125 are adjusted to the proper positions, and then the pedal 122 is released for positioning. In this way, the user can adjust the air supply angle of the fan more freely and does not need to memorize the specific rotating direction.

[0037] Compared with the known art, the universal rotary fan of the embodiments of the present invention is provided with the rotating mechanism 120 at the bottom. The user can adjust the air supply direction of the fan by stepping on the pedal 122 and rotating the cylinder 200. Positioning of the universal rotary fan can be completed simply by releasing the pedal when the user adjusts the air supply direction of the fan to the ideal position, and accordingly adjustment of the air supply angle of the fan is achieved conveniently, rapidly and effortlessly.

[0038] Although the present invention has been disclosed in the form of preferred embodiments and variations thereon, it will be understood that numerous additional modifications and variations could be made thereto without departing from the scope of the invention.

[0039] For the sake of clarity, it is to be understood that the use of "a" or "an" throughout this application does not exclude a plurality, and "comprising" does not exclude other steps or elements.

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