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United States Patent Application	20110303702
Kind Code	A1
Wang; Ya-Tsan	December 15, 2011

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Claims

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1. A spray head assembly comprising: a push member having a nozzle and an outlet tube connected with the push member; a piston rod being a hollow tube and including an enlarged engaging head and a hollow tube extending from the engaging head, the engaging head contacting an inside of the push member; a spring being biased between the hollow tube of the piston rod and a seal member so as to provide a return force to the piston rod and a link; the seal member located at a first end of a cylinder and having a passage through which the piston rod extends; the link including a cylindrical portion which extends through the hollow tube and multiple axial slots defined in an outer surface thereof, a stop connected to an end of the cylindrical portion; a movable member having a through hole define axially therethrough and the link extending through the through hole, an open end of the movable member removably sealed by the stop of the link by the return force from the spring; the cylinder being a tubular member with a first section and a second section which is smaller than the first end in diameter, the movable member and the link received in a chamber defined in the first section, a path formed within the second section, and a resilient valve being a spiral valve and received in the second section of the cylinder, the resilient valve having a first end and a second end, an opening defined in a first end and an insertion protruding from the second end and sealing the path, a hollow resilient portion located between the first and second ends of the resilient valve so as to provide a force to move the insertion of the resilient valve to seal the path.

2. The assembly as claimed in claim 1, wherein a fixing part is mounted to a opening of a container and the spray assembly is connected to the container by the fixing part.

3. The assembly as claimed in claim 2, wherein the fixing part includes a sealing member to seal the opening of the container.

4. The assembly as claimed in claim 1, wherein the second section of the cylinder includes a connection port and a suction tube is connected to the connection port and inserted into the container.

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Description

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BACKGROUND OF THE INVENTION

[0001] 1. Field of the Invention

[0002] The present invention relates to a spray head assembly, and more particularly, to a spray head assembly suitable for lotion or perfume.

[0003] 2. Description of the Prior Art

[0004] A conventional spray head assembly 100 is shown in FIG. 1 and generally includes a head 101 with a nozzle 101a and a mounting tube 102 is connected to the head 101. A first suction tube 103 is connected between the mounting tube 102 and a cone-shaped member 104 which has an insertion 105 connected to the bottom thereof. There are two holes 105a defined in two sides of the insertion 105 and the holes 105a are hidden by the cone-shaped member 104. A spring 106 is connected to the insertion 105 and a ball 107 is located on the other end of the spring 106. A reception tube 108 accommodates the first suction tube 103, the cone-shaped member 104, the insertion 105, the spring 106 and the ball 107 in sequence, and a second suction tube 109 is connected to the reception tube 108.

[0005] When the user presses the head 101, the air in the container releases from the nozzle 101a and the lotion or perfume sucked into the reception tube 108 via the second suction tube 109. The spring 106 pushes the ball 107 of the insertion 105 to seal the opening of the reception tube 108, and a gap is defined between the insertion 105 and the cone-shaped member 104, such that the lotion of perform in the reception tube 108 flows into the insertion 105 via the gap and the holes 105a. The lotion or perform is then sucked by the first suction tube 103 and sprayed out from the nozzle 101a. When the head 101 is released, the lotion or perfume left in the reception tube 108 flows back to the container.

[0006] However, the two holes 105a defined in two sides of the insertion 105 easily causes surplus and rough material around the holes 105a and which require more labor time to remove it. Besides, the ball 107 is made of metal which lacks flexibility so that it is not satisfied by using the ball 107 to seal the opening of the reception tube 108 during operation.

[0007] The present invention intends to provide a spray head assembly which improves the shortcomings mentioned in the conventional spray head assembly.

SUMMARY OF THE INVENTION

[0008] The present invention relates to a spray head assembly which comprises a push member having a nozzle and an outlet tube is connected with the push member. A piston rod is a hollow tube and includes an enlarged engaging head and a hollow tube extends from the engaging head. The engaging head contacts an inside of the push member. A spring is biased between the hollow tube of the piston rod and a seal member so as to provide a return force to the piston rod and a link. The seal member is located at a first end of a cylinder and has a passage through which the piston rod extends. The link includes a cylindrical portion which extends through the hollow tube and multiple axial slots are defined in an outer surface thereof. A stop is connected to an end of the cylindrical portion. A movable member has a through hole define axially therethrough and the link extends through the through hole. An open end of the movable member is removably sealed by the stop of the link by the return force from the spring. The cylinder is a tubular member with a first section and a second section which is smaller than the first end in diameter. The movable member and the link are received in a chamber defined in the first section. A path is formed within the second section. A resilient valve is a spiral valve and received in the second section of the cylinder. The resilient valve has a first end and a second end. An opening is defined in a first end and an insertion protrudes from the second end and seals the path. A hollow resilient portion is located between the first and second ends of the resilient valve so as to provide a force to move the insertion of the resilient valve to seal the path.

[0009] The primary object of the present invention is to provide a spray head assembly which includes a link with multiple axial slots defined in the outer surface thereof and the axial slots replace the two holes in the insertion of the conventional spray head assembly to eliminate surplus and rough material when drilling the holes in the insertion.

[0010] Another object of the present invention is to provide a spray head assembly which includes a spiral resilient valve to replace the ball of the conventional spray head assembly and the spiral resilient valve quickly responses to the operation of the spray head assembly.

[0011] The present invention will become more obvious from the following description when taken in connection with the accompanying drawings which show, for purposes of illustration only, a preferred embodiment in accordance with the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS

[0012] FIG. 1 is an exploded view to show the conventional spray head assembly;

[0013] FIG. 2 is an exploded view to show the spray head assembly of the present invention;

[0014] FIG. 3 is a cross sectional view of the spray head assembly of the present invention;

[0015] FIG. 4 is a cross sectional view to show that the push member of the spray head assembly of the present invention is pressed, and

[0016] FIG. 5 is a cross sectional view to show that the push member of the spray head assembly of the present invention is released.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0017] Referring to FIGS. 2 and 3, the spray head assembly 10 of the present invention comprises a push member 1 which has a nozzle 11 so as to release lotion or perfume therefrom. An outlet tube 12 is connected within the push member 1. A piston rod 2 which is a hollow tube and includes an enlarged engaging head 21 and a hollow tube 22 extends from the engaging head 21, wherein the engaging head 21 contacts an inside of the push member 1. A spring 3 is biased between the hollow tube 22 of the piston rod 2 and a seal member 4 so as to provide a return force to the piston rod 2 and a link 5. The seal member 4 is located at a first end of a cylinder 7 and has a passage 41 through which the piston rod 2 extends. The link 5 includes a cylindrical portion 51 which extends through the hollow tube 22 and multiple axial slots 52 are defined in an outer surface thereof. A stop 53 is connected to an end of the cylindrical portion 51. A movable member 6 has a through hole 61 define axially therethrough and the link 5 extends through the through hole 61. An open end of the movable member 6 is removably sealed by the stop 53 of the link 5 by the return force from the spring 3. The cylinder 7 is a tubular member with a first section 71 and a second section 72 which is smaller than the first end in diameter. The movable member 6 and the link 5 are received in a chamber 711 defined in the first section 71. A path 721 is formed within the second section 72 and a connection port 722 is defined in an end of the second section 72. A suction tube 30 is connected to the connection port 722 and inserted into the container 20.

[0018] A resilient valve 8 is a spiral valve and received in the second section 72 of the cylinder 7. The resilient valve 8 has a first end 81 and a second end 82, wherein an opening 84 is defined in a first end 81 and an insertion 821 protrudes from the second end 82 so as to seal the path 721. A hollow resilient portion 83 is located between the first and second ends 81, 82 of the resilient valve 8 so as to provide a force to move the insertion 821 of the resilient valve 8 to seal the path 721. A fixing part 9 is mounted to a opening of the container 20 and the spray assembly 10 is connected to the container 20 by the fixing part 9. The fixing part 9 includes a sealing member 91 to seal the opening of the container 20.

[0019] As shown in FIG. 4, when the push member 1 is pressed downward, the piston rod 2 and the link 5 are lowered and the space in the second section 72 of the cylinder 7 is compressed. The liquid pressure moves the insertion 821 to seal the path 721 of the cylinder 7 so that the cylinder 7 is completely sealed. The stop 53 of the link 5 is separated from the movable member 6 so that the slots 52 in the link 5 are removed from the movable member 6 to form a gap. The liquid in the container 20 is then released from the nozzle 11 via the hollow tube 22 and the outlet tube 12 by the high pressure. During the release of the liquid, the resilient valve 8 quickly responses and is lowered to seal the path 721.

[0020] As shown in FIG. 5, when releasing the push member 1, the return force of the spring 3 makes the piston rod 2 and the link 5 both move upward, and the stop 53 of the link 5 seals the movable member 6. The pressure in the chamber 711 of the cylinder 7 is lower than that of outside so that the liquid pushes the insertion 821 from the path 721 and the opening 84 of the resilient valve 8 is sucked into the chamber 711 and ready for the next pressing action.

[0021] The resilient valve 8 replaces the ball in the convention spray head assembly and has better resilient feature to quickly seal the path 721 during operation. The axial slots 52 in the link 5 avoid the labor and time required to clean up the surplus and rough material as the drilling of holes in the insertion of the conventional spray head assembly.

[0022] While we have shown and described the embodiment in accordance with the present invention, it should be clear to those skilled in the art that further embodiments may be made without departing from the scope of the present invention.

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