Automatically resettable press-type switching valve and bathtub faucet

Patent metadata

Field	Value
Publication number	US-11022234-B2
Application number	US-201816159981-A
Country	US
Kind code	B2
Filing date	Oct 15, 2018
Priority date	Feb 9, 2018
Publication date	Jun 1, 2021
Grant date	Jun 1, 2021

Abstract

An automatically resettable press-type switching valve includes a valve housing, an operating portion, a driven rod, a water blocking member, and a resetting member. The valve housing is formed therein with an inlet and outlet passages. A water blocking seat is provided between the inlet and outlet passages. The operating portion drives the driven rod to move axially so as to form a forward pressure difference or reverse pressure difference between two opposing sides of the water blocking member, by which the water blocking member is pushed to move axially with the driven rod. The resetting member is drivingly connected with the water blocking member, when there is no water pressure at a side of the inlet passage, the resetting member drives the water blocking member to separate from the water blocking seat, and the inlet passage is communicated with the outlet passage.

First claim

What is claimed is:

1. An automatically resettable press-type switching valve, comprising a valve housing, an operating portion, a driven rod, a water blocking member, and a resetting member, wherein:
the valve housing is formed therein with an inlet passage and an outlet passage, a water blocking seat is provided between the inlet passage and the outlet passage, the operating portion drives the driven rod to move axially, the axial movement of the driven rod forms a forward pressure difference or reverse pressure difference between two opposing sides of the water blocking member, by which the water blocking member is pushed to move axially with the driven rod;
the resetting member is drivingly connected with the water blocking member, when there is no water pressure at a side of the inlet passage where the water blocking member is located, the resetting member drives the water blocking member to separate from the water blocking seat, and the inlet passage is communicated with the outlet passage,
wherein the driven rod is further provided with a second seal and a third seal, the driven rod has a middle portion configured to be assembled to fit with the water blocking member, the second seal and the third seal are located at two sides of the water blocking member, respectively, the valve housing comprises a first moving cavity and a second moving cavity, the driven rod and the second seal or the third seal are configured to perform piston movement in the first or second moving cavity, the first moving cavity is communicated with the inlet passage, a water pressure in the inlet passage pushes the second seal to form a second balance force, the second moving cavity is communicated with the outlet passage, a water pressure in the outlet passage pushes the third water blocking member to form a third balance force which is in a direction opposite to that of the second balance force.

2. The automatically resettable press-type switching valve according to claim 1 , wherein the driven rod comprises at least one retainer which is configured to abut against the water blocking member at least one side, thereby driving the water blocking member to block water, the driven rod is configured to drive the water blocking member to cover and engage with the water blocking seat to cut off the communication of the inlet passage and the outlet passage.

3. The automatically resettable press-type switching valve according to claim 2 , wherein the operating portion is a button-type actuation mechanism comprising a button portion and a transmission portion, the transmission portion is connected with the button portion and the driven rod, respectively, and transforms a pressing action to an axial action so as to drive the driven rod to move axially.

4. The automatically resettable press-type switching valve according to claim 1 , further comprises a pressure chamber formed at one side of the water blocking member and communicated with the inlet passage, a water pressure formed in the pressure chamber acts on the water blocking member to keep it covered and engaged with the water blocking seat.

5. The automatically resettable press-type switching valve according to claim 4 , wherein the water blocking member is formed with an axial access hole which has one end communicated with the pressure chamber and another end communicated with the outlet passage, the driven rod is movably fitted in the access hole, the driven rod is provided with a first seal which, together with the driven rod, movably seals the access hole, when the driven rod resets away from the water blocking seat to release the water blocking member, the first seal disengages from the access hole, thereby releasing the pressure inside the pressure chamber.

6. The automatically resettable press-type switching valve according to claim 5 , wherein the operating portion is a button-type actuation mechanism comprising a button portion and a transmission portion, the transmission portion is connected with the button portion and the driven rod, respectively, and transforms a pressing action to an axial action so as to drive the driven rod to move axially.

7. The automatically resettable press-type switching valve according to claim 4 , further comprising a first fixing seat to form a pressure cavity facing the water blocking seat, wherein the pressure cavity and the water blocking member jointly enclose the pressure chamber which is communicated with the inlet passage.

8. The automatically resettable press-type switching valve according to claim 7 , further comprising a second fixing seat on which the water blocking seat is formed, and which is formed with a guiding cylinder facing the first fixing seat, wherein the guiding cylinder is sealedly communicated with the pressure cavity of the first fixing seat, and together with the pressure cavity and the water blocking member, encloses the pressure chamber, there are a plurality of inlets provided between the guiding cylinder and the water blocking seat.

9. The automatically resettable press-type switching valve according to claim 8 , wherein the water blocking member is movably sealed with the guiding cylinder via a fourth seal, the water blocking member is movable axially within the guiding cylinder to be switched to a blocked state or communicated state.

10. The automatically resettable press-type switching valve according to claim 7 , wherein the water blocking member is a water blocking diaphragm which has periphery fixing and sealing the pressure chamber, the water blocking diaphragm has a blocking path which is displaceable by deformation of the diaphragm, and thus to be switched to a blocked state or communicated state.

11. The automatically resettable press-type switching valve according to claim 4 , wherein the operating portion is a button-type actuation mechanism comprising a button portion and a transmission portion, the transmission portion is connected with the button portion and the driven rod, respectively, and transforms a pressing action to an axial action so as to drive the driven rod to move axially.

12. The automatically resettable press-type switching valve according to claim 1 , wherein the first seal of the driven rod is located between the driven rod and the water blocking member, the inlet passage is at one side of the first seal, and the outlet passage is at the other side of the first seal, in a blocked state of the water blocking member, the water pressure in the inlet passage pushes the first seal to form a first balance force which is in an direction opposite to that of the second balance force.

13. The automatically resettable press-type switching valve according to claim 12 , wherein the operating portion is a button-type actuation mechanism comprising a button portion and a transmission portion, the transmission portion is connected with the button portion and the driven rod, respectively, and transforms a pressing action to an axial action so as to drive the driven rod to move axially.

14. The automatically resettable press-type switching valve according to claim 1 , wherein the first moving cavity has one end communicated with the outlet passage, and another end communicated with an external space, the second seal separates the outlet passage from the external space to form the second balance force.

15. The automatically resettable press-type switching valve according to claim 14 , wherein the operating portion is a button-type actuation mechanism comprising a button portion and a transmission portion, the transmission portion is connected with the button portion and the driven rod, respectively, and transforms a pressing actio

Assignees

• Xiamen Solex High Tech Ind Co Ltd

Inventors

• Wei Zhijian
• Hu Lihong
• Lin Fangqi
• Dan Tangjun

Classifications

• F16K1/42

  Valve seats (for double-seat valves F16K1/44) · CPC title

• E03C1/023

  with flow distribution, e.g. diverters · CPC title

• F16K31/38

  in which the fluid works directly on both sides of the fluid motor, one side being connected by means of a restricted passage and the motor being actuated by operating a discharge from that side (F16K31/40 takes precedence) · CPC title

• F16K7/16

  the diaphragm being mechanically actuated, e.g. by screw-spindle or cam · CPC title

• F16K31/528

  with pin and slot · CPC title