A push valve and a water outlet faucet

Abstract

The present invention discloses a push valve and a water outlet faucet. The push valve includes a valve housing, a valve stem and a push assembly. The valve stem slides axially between a first position and a second position along the valve housing under the drive of the push assembly to switch the water outlet or water inlet state of the valve housing. The valve stem is provided with two groups of pressure-bearing structures along its axial direction. Each group of pressure-bearing structures includes two pressure-bearing surfaces that are arranged opposite to each other and have equal pressure-bearing areas. When the valve stem is in the first position or the second position, the corresponding group of pressure-bearing structures bears the water. The push valve and water outlet faucet using the above structure can balance the pressure of the water pressure on the valve stem, thereby reducing the resistance during the pressing operation and ensuring the pressing feel of the push valve.

Description

Technical Field

[0001] The present invention relates to the technical field of valves, and in particular to a push valve and a water tap. Background Art

[0002] The existing push valve generally includes a valve housing, a valve stem, a diaphragm and a pressing assembly, wherein the pressing assembly usually adopts a ballpoint pen pressing structure, and through the cooperation of the ratchet and ratchet teeth, the ratchet is pushed to rotate a certain angle and stop between two positions when pressed, so that the valve stem can be positioned at a preset position, and a pilot hole is set on the diaphragm, and water is pre-injected through the pilot hole to make the water pressure of the chambers on both sides of the diaphragm consistent, thereby reducing the resistance during pressing and ensuring the pressing feel, but this pilot-operated push valve is prone to failure due to the blockage of the pilot hole, and the water path cannot be switched. In order to solve this problem of the pilot-operated push valve, there is a push valve structure in the prior art that directly uses a pressing assembly to push the valve stem to slide for water path switching, but this structure requires overcoming the water pressure when pressing, resulting in a poor pressing feel. Summary of the invention

[0003] The purpose of the present invention is to overcome the above-mentioned defects or problems existing in the background technology and to provide a pressing method and a water outlet faucet, which can balance the pressure of water pressure on the valve stem by setting a symmetrical pressure-bearing surface on the valve stem, thereby reducing the resistance during the pressing operation and ensuring the pressing feel of the press valve.

[0004] To achieve the above object, the present invention adopts the following technical solutions:

[0005] The first technical solution: a push valve, comprising a valve housing, a valve stem and a push assembly, wherein the valve stem slides axially along the valve housing between a first position and a second position under the drive of the push assembly to switch the water outlet or water inlet state of the valve housing, and the valve stem is provided with two groups of pressure-bearing structures along its axial direction, and each group of pressure-bearing structures comprises two pressure-bearing surfaces arranged opposite to each other and having equal pressure-bearing areas; when the valve stem is located at the first position or the second position, the corresponding group of pressure-bearing structures receives the water.

[0006] Based on the first technical solution, there is also a second technical solution: the valve housing is provided with a water inlet and two water outlets, and when the valve stem is located at the first position or the second position, the water inlet is respectively connected to one of the water outlets.

[0007] Based on the second technical solution, there is also a third technical solution: the valve housing is provided with two water passing surfaces between the water inlet and the two water outlets; the valve stem includes a rod body and a sealing gasket; the rod body slides axially along the valve housing between a first position and a second position; the sealing gasket is fixed to the rod body, and blocks one of the water passing surfaces when the rod body switches between the first position and the second position; the pressure-bearing structure is respectively located on both sides of the sealing gasket.

[0008] Based on the third technical solution, there is also a fourth technical solution: a gasket installation groove is provided on the rod body; the blocking gasket is sleeved in the gasket installation groove and is limited by the groove wall of the gasket installation groove.

[0009] Based on the fourth technical solution, there is also a fifth technical solution: the valve housing includes an outer shell and an inner seat; the inner seat is fixed inside the outer shell, and a sliding cavity is formed in the middle thereof; the rod body is inserted into the sliding cavity and slides axially along the sliding cavity between a first position and a second position.

[0010] Based on the first to fifth technical schemes, there is also a sixth technical scheme: the pressing assembly includes a pressing seat, an active button, a follower, a pressing spring and a return spring; the pressing seat is fixed to the valve housing, and its inner wall is circumferentially provided with several groups of first and second stop positions at different axial heights; the active button slides axially along the pressing seat, and a ratchet structure is provided at its bottom; the follower is rotatably connected to the active button, and a slope structure is provided at a position corresponding to the ratchet structure of the active button along the circumferential direction; the pressing spring acts between the valve stem and the active button; the return spring acts between the valve stem and the valve housing and its action direction is opposite to that of the follower on the valve stem; the active button is obliquely pressed against the follower when pressed, and drives the follower to rotate so that it switches between the first and second stop positions, and drives the valve stem to switch between the first position and the second position by pushing the follower against the valve stem.

[0011] Based on the first to fifth technical solutions, there is also a seventh technical solution: the pressing assembly includes a pressing seat, an active button, a follower, a first spring and a second spring; the pressing seat is fixed to the valve housing, and its inner wall is provided with a plurality of first and second stop positions at different axial heights along the circumferential direction; the active button slides axially along the pressing seat, and a ratchet structure is provided at the bottom thereof; the follower is rotatably connected to the active button, and a slope structure is provided at a position corresponding to the ratchet structure of the active button along the circumferential direction; the first spring acts between the valve stem and the follower; the second spring acts between the valve stem and the valve housing, and acts on the valve stem opposite to the first spring; the active button obliquely abuts against the follower when being pressed, and drives the follower to rotate so that it switches between the first and second stop positions, and when the follower is at the first stop position, the first spring stretches to a state less than the second spring force to stop the valve stem at the first position, and when the follower is at the second stop position, the first spring is compressed to a state greater than the second spring force to stop the valve stem at the second position.

[0012] Based on the seventh technical solution, there is also an eighth technical solution: the pressing assembly also includes a positioning bead; the follower is provided with a follower mounting groove for the first spring to be inserted and installed; the positioning bead is located between the end of the first spring in the follower mounting groove and the bottom wall of the follower mounting groove.

[0013] Based on the eighth technical solution, there is also a ninth technical solution: the two ends of the rod body are respectively provided with a first mounting groove and a second mounting groove recessed along the axial direction of the rod body; the first mounting groove and the second mounting groove are respectively used for the first spring and the second spring to extend into and abut against their respective bottom walls.

[0014] In addition, the present invention also provides a water faucet, including a faucet body, the faucet body is connected to an external water supply and is provided with at most two water outlet pipes, the faucet body is equipped with a press valve as described in any one of the first to ninth technical solutions mentioned above, the press valve is provided with a water inlet and at most two water outlets; the water inlet is connected to an external water supply, and the water outlet is sealed and connected with the corresponding water outlet pipes one by one.

[0015] From the above description of the present invention, it can be seen that compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. A pressure-bearing structure is arranged on the valve stem, and each pressure-bearing structure forms two pressure-bearing surfaces which are arranged opposite to each other and have equal pressure-bearing areas. When the valve stem is in the first position or the second position, the valve is pressed to pass water. At this time, the water flows through one of the pressure-bearing structures. Since the pressure-bearing areas of the two pressure-bearing surfaces of the pressure-bearing structure are equal, the pressures formed on the two pressure-bearing surfaces when the water flows through are also equal. At the same time, since the two pressure-bearing surfaces are relative to each other, the water pressures borne by the two pressure-bearing surfaces of the pressure-bearing structure offset each other, thereby eliminating the force of the water pressure on the valve stem, thereby reducing the resistance encountered during the pressing operation, and ensuring the pressing feel of the press valve.

[0017] 2. A water inlet and two water outlets are arranged on the valve housing, water is taken in through the water inlet, and the water inlet is switched to connect to one of the water outlets through the valve stem to achieve the purpose of switching water outlet.

[0018] 3. A water surface is arranged in the valve housing, and a blocking gasket is arranged on the valve stem. The blocking gasket abuts against the blocking water surface to achieve the effect of switching the water inlet to connect with one of the water outlets.

[0019] 4. A gasket installation groove is provided on the rod body to facilitate the installation of the rubber sealing gasket on the rod body.

[0020] 5. The valve housing includes an outer shell and an inner seat. The inner seat is used to form a sliding cavity so that the rod body can slide along the sliding cavity.

[0021] 6. The pressing component is a ballpoint pen structure. The parking position of the follower can be switched by pressing the active button, thereby changing the position of the valve stem. The pressing spring can drive the active button to reset, and the reset spring can drive the valve stem to reset.

[0022] 7. The pressing assembly is a ballpoint pen structure, and a first spring and a second spring are provided. The two springs are used to apply force to the valve stem from opposite directions. The valve stem can be switched between the first position and the second position by the difference in elastic force between the first spring and the second spring when the valve stem is in different positions; and through the action of the two springs, there can be a delay in the force applied to the valve stem, thereby improving the pressing feeling. In addition, due to the shock-absorbing effect of the spring, the stress deformation of the valve stem under the impact of water flow can be reduced, thereby improving the service life of the valve stem.

[0023] 8. Set a positioning bead. Since the follower in the pressing assembly will rotate and the first spring needs to act on the follower, the positioning bead is set between the follower and the first spring so that the first spring can act on the follower in a fixed position without being damaged by the rotation of the follower.

[0024] 9. Mounting grooves are provided at both ends of the rod body to facilitate the installation and positioning of the first spring and the second spring.

[0025] 10. Provide a water faucet, which uses the above-mentioned press valve and has the advantages of simple and reliable structure and comfortable pressing feeling. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0027] Figure 1 An exploded view of the structure of a push valve according to Embodiment 1 of the present invention;

[0028] Figure 2 for Figure 1 A schematic diagram of the structure of the pressing component in FIG.

[0029] Figure 3 for Figure 1 A schematic diagram of the structure of the shell in FIG.

[0030] Figure 4 for Figure 1 A schematic diagram of the structure of the inner seat;

[0031] Figure 5 for Figure 1Schematic diagram of the structure of the rod body;

[0032] Figure 6 for Figure 1 A structural cross-sectional view of the rod body;

[0033] Figure 7 for Figure 1 Structural cross-section of the push valve Figure 1 ;

[0034] Figure 8 for Figure 1 Structural cross-section of the push valve Figure 2 ;

[0035] Fig. 9 A structural cross-sectional view of a second embodiment of a push valve provided by the present invention Figure 1 ;

[0036] Fig.10 This is a structural cross-sectional view of Example 2 of a press valve provided by the present invention.

[0037] Description of main reference numerals:

[0038] 11. Pressing seat; 111. Card joint; 112. Positioning protrusion; 12. Active button; 13. Follower; 14. Pressing spring; 15. Return spring; 16. Positioning bead; 17. First spring; 18. Second spring; 21. Rod body; 211. Gasket mounting groove; 212. Abutting wall; 213. Pressing spring mounting groove; 214. First pressure-bearing surface; 215. Second pressure-bearing surface; 216. Third pressure-bearing surface; 217. Fourth pressure-bearing surface; 218. 22. Sealing gasket; 31. Inner seat; 311. Inner seat water outlet; 312. Inner seat chamber; 40. Outer shell; 41. Water inlet; 42. Upper water outlet; 43. Lower water outlet; 44. Valve chamber; 45. Card joint groove; 46. Positioning notch. DETAILED DESCRIPTION

[0039] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are preferred embodiments of the present invention and should not be regarded as excluding other embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0040] In the claims, description and the above-mentioned drawings of the present invention, unless otherwise clearly defined, the use of terms such as "first", "second" or "third" etc. are for distinguishing different objects rather than for describing a specific order.

[0041] In the claims, specification and the above-mentioned drawings of the present invention, unless otherwise explicitly defined, directional words, such as the terms "center", "lateral", "longitudinal", "horizontal", "vertical", "top", "bottom", "inside", "outside", "up", "down", "front", "back", "left", "right", "clockwise", "counterclockwise", etc., indicating directions or positional relationships are based on the directions and positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the specific protection scope of the present invention.

[0042] In the claims, specification and the above drawings of the present invention, unless otherwise clearly defined, if the term "fixed connection" or "fixed connection" is used, it should be understood in a broad sense, that is, any connection method without a displacement relationship and relative rotation relationship between the two, that is to say, including non-detachable fixed connection, detachable fixed connection, integrated connection and fixed connection through other devices or elements.

[0043] In the claims, description and drawings of the present invention, if the terms "include", "have" and their variations are used, they are intended to mean "including but not limited to".

[0044] The structure of Example 1 of the push valve provided by the present invention is described below.

[0045] See also Figure 1 The structure of the push valve provided in Example 1 is as follows Figure 1 As shown, it may include a valve housing, a valve stem and a pressing assembly.

[0046] The valve housing comprises an outer shell 40 and an inner seat 31 .

[0047] The structure of the housing 40 is as follows Figure 3As shown, the whole is a cylindrical structure, with an open upper end and a closed lower end, and a valve cavity 44 is formed inside. A plurality of water inlets 41 are circumferentially arranged in the middle position of the shell 40, a plurality of upper water outlets 42 are arranged on the shell 40 above the water inlet 41, and a plurality of lower water outlets 43 are arranged on the shell 40 below the water inlet 41. A sealing ring is installed on the outer wall of the shell 40 between the water inlet 41 and the upper water outlet 42, a sealing ring is installed on the outer wall of the shell 40 between the water inlet 41 and the lower water outlet 43, and a sealing ring is installed on the outer wall of the shell 40 above the upper water outlet 42. When connecting to an external water inlet pipeline or water outlet pipeline, the above-mentioned sealing ring is used to achieve the isolation of multiple waterways. A clamping groove 45 is provided at the upper end of the shell 40, and the clamping groove 45 is a through hole that penetrates the wall surface of the shell 40. The upper end of the housing 40 is provided with a positioning notch 46, which is a notch that is provided on the top side wall of the housing 40 and opens upward. The inner wall of the upper position of the valve cavity 44 of the housing 40 is provided with a step surface along the circumferential direction, and the step surface is arranged upward. The inner wall of the valve cavity 44 of the housing 40 between the water inlet 41 and the lower water outlet 43 is provided with another step surface along the circumferential direction, and the step surface forms a water passing surface. By blocking the water passing surface, the communication between the water inlet 41 and the lower water outlet 43 can be cut off.

[0048] The structure of the inner seat 31 is as follows Figure 4 As shown, the overall structure is roughly cylindrical, with openings at both ends, and an inner seat chamber 312 is formed inside. The inner seat chamber 312 is the sliding chamber of the inner seat 31, and the inner seat chamber 312 is a regular cylindrical shape. A plurality of inner seat water outlets 311 are provided on the wall surface along the axial direction in the middle position of the inner seat 31, and two sealing rings are respectively installed on the outer wall of the inner seat 31 at the upper and lower positions of the inner seat water outlets 311. A flange is provided at the upper position of the inner seat 31 protruding outward along the circumferential direction. The lower edge of the inner seat 31 forms a water passing surface, and the connection between the inner seat water outlet 311 and the lower end opening of the inner seat 31 can be cut off by blocking the water passing surface.

[0049] The outer diameter of the inner seat 31 matches the inner diameter of a part of the mechanism of the valve cavity 44 of the outer shell 40. The inner seat 31 can be inserted and installed inside the valve cavity 44 of the outer shell 40, and the flange on the inner seat 31 overlaps the step surface at the middle position inside the outer shell 40. When the inner seat 31 is installed inside the outer shell 40, its inner seat water outlet 311 corresponds to the position of the upper water outlet 42 on the outer shell 40, and the sealing rings below and above the inner seat water outlet 311 make one end of the inner seat water outlet 311 only communicate with the upper water outlet 42.

[0050] The valve stem includes a stem body 21 and a sealing gasket 22 .

[0051] The structure of the rod body 21 is as follows: Figure 5 and Figure 6As shown, the whole structure is roughly cylindrical, and a gasket installation groove 211 is provided in the middle position. The gasket installation groove 211 is an annular groove structure arranged along the circumference of the rod body 21 and recessed toward the radial direction of the rod body 21. The gasket installation groove 211 forms two side walls in the axial direction of the rod body 21. Pressure-bearing structures are respectively provided above and below the gasket installation groove 211. The pressure-bearing structures include two pressure-bearing surfaces arranged opposite to each other and having the same pressure-bearing area. The pressure-bearing structure above the gasket installation groove 211 includes a first pressure-bearing surface 214 and a second pressure-bearing surface 215; the pressure-bearing structure below the gasket installation groove 211 includes a third pressure-bearing surface 216 and a fourth pressure-bearing surface 217. The pressure-bearing surface can be regarded as a wall facing the axial direction of the rod body 21 formed by partially hollowing out the main body of the rod body 21. The plane where the wall is located is perpendicular to the axial direction of the rod body 21, and they are arranged in pairs. Each time water flows through, only one group of pressure-bearing surfaces of a pressure-bearing structure receives water, and the other group of pressure-bearing surfaces of the pressure-bearing structure does not receive water.

[0052] The upper part of the rod body 21 is provided with an abutment wall 212, which is formed by a flange structure extending radially outward from the rod body 21. Above the abutment wall 212, a pressing spring installation groove 213 is provided, which is formed by the top end of the rod body 21 being recessed downward along the axial direction of the rod body.

[0053] The structure of the blocking gasket 22 is as follows: Figure 1 As shown, it is made of rubber material and presents a relatively flat cylindrical structure, and a through hole is provided in the middle along the axial direction, and the through hole is used for installing and fixing the sealing gasket 22.

[0054] The blocking gasket 22 is sleeved in the gasket installation groove 211 of the rod body 21 and is limited by the groove wall of the gasket installation groove 211. The width of the gasket installation groove 211 is adapted to the thickness of the blocking gasket 22, and the diameter of the rod body 21 at the position of the gasket installation groove 211 is roughly adapted to the diameter of the middle through hole of the blocking gasket 22. After the blocking gasket 22 is installed on the rod body 21, its outer edge has a solid structure that partially protrudes from the rod body 21.

[0055] The pressing assembly includes a pressing seat 11 , an active button 12 , a follower 13 , a pressing spring 14 and a return spring 15 .

[0056] The structure of the pressing seat 11 is as follows Figure 1 and Figure 2As shown, the overall structure is roughly cylindrical, with openings at both ends and a hollow interior. A clamping joint 111 and a positioning protrusion 112 are provided on the outer wall surface at the lower position. The lower edge of the clamping joint 111 is an inclined surface, and the top end is a plane, which is used to achieve the fixed installation of the pressing seat 11; the positioning protrusion 112 is a protrusion relative to the outer wall surface of the pressing seat 11, which is used to pre-position the position of the pressing seat 11 when the pressing seat 11 is installed to avoid installation misalignment. The inner wall surface of the pressing seat 11 is provided with a plurality of limit modules protruding relative to the inner wall surface, each of which includes a guide groove extending along the axial direction of the pressing seat 11, and a stop groove extending along the axial direction of the pressing seat 11 is provided between the two limit modules, and a serrated inclined surface structure is provided at the lower end of each limit module. The stop groove forms the first stop position of the pressing seat 11, and the serrated structure at the lower end of the limit module forms the second stop position of the pressing seat 11. Two protrusion structures are provided at two symmetrical positions at the upper opening of the pressing seat 11 and inwardly along the radial direction of the pressing seat 11 .

[0057] The structure of the active button 12 is as follows Figure 1 and Figure 2 As shown, it forms the input end of the pressing assembly, and its overall structure is roughly cylindrical. Two slide grooves are provided at two symmetrical positions on its outer side wall along the axial direction of the active key 12, and a plurality of guide sliders are provided at its lower position along the circumferential direction. A plurality of sawtooth-shaped inclined surfaces are provided at its bottom end along the circumferential direction, thereby forming a ratchet structure of the active key. At the same time, its interior is hollow, and the lower end has an opening, forming a chamber that can be entered from below. The active key 12 is also provided with a spring mounting groove in the formed chamber.

[0058] The structure of the follower 13 is as follows: Figure 1 and Figure 2 As shown, it forms the output end of the pressing assembly, and its main body is a cylindrical structure. A plurality of protruding blocks are provided at the lower position of the main body along the circumferential direction, and the upper side of the protruding blocks is an inclined surface inclined to the same side, thereby forming an inclined surface structure of the follower 13. The interior of the follower 13 is hollow, and the upper and lower ends are open to form a through hole.

[0059] In general, the connection relationship between the above components is as follows.

[0060] The pressing spring 14 is located between the rod body 21 and the active button 12, with one end inserted into the pressing spring installation slot 213 at the top of the rod body 21, and the other end penetrates the follower 13 and is inserted into the spring installation slot below the active button 12, so as to reset the active button 12.

[0061] The return spring is located between the rod body 21 and the inner seat 31 , with one end thereof abutting against the top surface of the inner seat 31 and the other end abutting against the lower surface of the abutting wall 212 of the rod body 21 , for returning the rod body 21 .

[0062] The pressing assembly is installed on the valve housing, and when it is pressurized, the output end moves between the first stop position and the second stop position relative to the valve housing. Specifically, the pressing seat 11 of the pressing assembly is fixedly connected to the outer shell 40 of the valve housing, and the positioning protrusion 112 of the pressing seat 11 corresponds to the position of the positioning notch 46 on the outer shell 40, and the size is adapted, and the positioning protrusion 112 can be inserted into the positioning notch 46; the clamping joint 111 of the pressing seat 11 can be clamped with the clamping groove 45 on the outer shell 40, so that the pressing seat 11 is fixedly installed at the upper end position of the outer shell 40. At the same time, after the pressing seat 11 is fixedly installed at the upper end position of the outer shell 40, the lower edge of the pressing seat 11 will abut against the flange of the inner seat 31, so that the inner seat 31 is fixed in the valve cavity 44 of the outer shell 40.

[0063] When the active button 12 is pressed, the ratchet structure of the active button 12 will push the follower 13 to rotate, and the follower 13 moves in the limit module of the pressing seat 11 by rotating, thereby switching between the first stop position and the second stop position, and the first stop position and the second stop position have different axial height positions. When the follower 13 is in the first stop position, the rod body 21 is in the first position due to the action of the return spring 15, and when the follower 13 is in the second stop position, it pushes the abutting wall 212 of the rod body 21 to make the rod body 21 reach and remain in the second position.

[0064] The valve stem slides axially along the valve housing between the first position and the second position to switch the water outlet or water inlet state of the valve housing. Specifically, the valve housing is provided with an upper water passing surface and a lower water passing surface between the water inlet 41 and the upper water outlet 42 and the lower water outlet 43, respectively; the rod body 21 slides axially along the valve housing between the first position and the second position, and when the rod body 21 switches between the first position and the second position, the blocking gasket blocks one of the water passing surfaces of the valve housing respectively. In this embodiment, the rod body 21 is inserted into the sliding cavity formed by the inner seat 31, and slides axially along the sliding cavity between the first position and the second position. When the rod body 21 is in the first position, as Figure 7 As shown, the blocking gasket 22 blocks the upper water surface formed by the inner seat 31, the water inlet 41 is connected to the lower water outlet 43, and the lower water outlet is connected; when the rod body 21 is in the second position, as shown Figure 8 As shown, the blocking gasket 22 blocks the lower water surface formed by the shell 40, and the water inlet 41 is connected to the upper water outlet 42, and the upper and lower water channels are connected.

[0065] During assembly, first, the sealing gasket 22 is sleeved on the rod body 21, and then the return spring 15 is installed on the inner seat 31. Then, the valve stem is inserted into the inner seat chamber 312 of the inner seat 31 from top to bottom, and the return spring 15 is abutted against the rod body 21. Then, the pressing spring 14 is inserted into the pressing spring mounting groove 213 on the rod body 21, and then the follower 13 is sleeved on the top of the rod body 21, and then the active button 12 is installed, and then the pressing seat 11 is clamped and fixed to the outer shell 40.

[0066] In addition, the present invention also provides embodiment 2, the structure of embodiment 2 is as follows Fig. 9 and Fig.10 As shown, the difference between it and embodiment 1 mainly lies in the difference between the rod body 21 and the pressing assembly.

[0067] like Fig. 9 and Fig.10 As shown, the rod body 21 is provided with a first mounting groove and a second mounting groove at the upper and lower ends respectively, and both are formed by being recessed inward along the axial direction of the rod body 21 .

[0068] like Fig. 9 and Fig.10 As shown, the pressing assembly in Embodiment 2 includes a pressing seat 11 , an active button 12 , a follower 13 , a positioning bead 16 , a first spring 17 and a second spring 18 .

[0069] The structures of the pressing seat 11 and the active button 12 are substantially similar to those in the first embodiment, and will not be described in detail here.

[0070] The follower 13 forms the output end of the pressing assembly, and its main body is a cylindrical structure. Four outwardly protruding bumps are provided at the lower position of the main body along the circumferential direction. The upper sides of the bumps are inclined surfaces inclined to the same side, thereby forming an inclined surface structure of the follower 13. The interior of the follower 13 is hollow, and the bottom is open to form a chamber that can be entered from the bottom, and the chamber forms a follower installation groove.

[0071] The positioning bead 16 is a spherical component.

[0072] The active button 12 is slidably connected to the pressing seat 11, and it can extend from the upper opening of the pressing seat 11. The slide grooves on both sides of the active button 12 correspond to the positions of the two protruding structures on the pressing seat 11, so that the active button 12 can be restricted to slide along a certain route. At the same time, the guide slider on the active button 12 also corresponds to the guide groove of the limit module clock on the inner wall surface of the pressing seat 11, and the guide slider can slide along the guide groove. The main body of the follower 13 can be inserted into the cavity of the active button 12 from the bottom of the active button 12, and the sizes of the two are adapted. The ratchet structure set at the lower end of the active button 12 corresponds to the inclined structure on the follower 13. The ratchet structure can convert the sliding action of the active button 12 relative to the pressing seat 11 into the rotation action of the follower 13 relative to the pressing seat 11 by obliquely pressing the follower 13. The inclined surface structure on the follower 13 is also used to switch between the two parking positions of the pressing seat 11. When the inclined surface structure is located in the parking groove, the follower 13 is in a high position; when the inclined surface structure abuts against the serrated structure at the lower end of the limit module, the follower 13 is in a low position.

[0073] The first spring 17 acts between the output end of the pressing assembly and the first end of the valve stem. Specifically, one end of the first spring 17 extends into the follower mounting groove of the follower 13, and the end of the first spring 17 extending into the follower mounting groove abuts against the positioning bead 16, and the positioning bead 16 abuts against the bottom wall of the follower mounting groove, so that the positioning bead is located between the end of the first spring 17 and the bottom wall of the follower mounting groove. The lower end of the first spring 17 extends into the first mounting groove of the rod body 21, so that the two ends of the first spring 17 are respectively limited by the side walls of the follower mounting groove and the first mounting groove, thereby preventing the first spring 17 from shifting or falling off.

[0074] The second spring 18 acts between the valve housing and the second end of the valve stem, and acts on the valve stem opposite to the first spring 17. Specifically, the upper end of the second spring 18 extends into the second mounting groove of the rod body 21, and the lower end thereof abuts against the inner bottom wall of the housing 40. By installing the second spring 18 in the second mounting groove, the second spring 18 can be prevented from shifting or falling off.

[0075] By pressing the active button 12, the ratchet structure of the active button 12 will push the follower 13 to rotate. The follower 13 moves in the limit module of the pressing seat 11 by rotating, thereby switching between the first stop position and the second stop position. The axial height positions of the first stop position and the second stop position are different, so the compression of the upper spring 21 is also different.

[0076] When the output end of the pressing assembly is at the first stop position, that is, the follower 13 is at the high position, the first spring 17 is stretched to a state where the elastic force is less than the second spring 18, so that the valve stem stops at the first position. Fig. 9As shown in the figure, the compression stroke of the first spring 17 is short, and the second spring 18 pushes the rod body 21 upward. The elastic force of the first spring 17 is smaller than the elastic force of the second spring 18. At the same time, the second spring 18 overcomes the gravity of the valve stem itself and pushes the rod body 21 upward to the first position until the blocking gasket 22 abuts against the upper water surface, so that the valve stem stops at the first position; when the output end of the pressing assembly is in the second parking position, that is, the follower 13 is in the low position, the first spring 17 is compressed to a state greater than the elastic force of the second spring 18 to stop the valve stem in the second position. At this time, the state is as shown in the figure. Figure 7 As shown, the compression stroke of the first spring 17 is longer, and the elastic force of the first spring 17 is greater than the elastic force of the second spring 18, so that the first spring 17 overcomes the resistance of the second spring 18 and pushes the rod body 21 downward to the second position until the sealing gasket 22 abuts against the lower water surface, thereby stopping the valve stem at the second position.

[0077] In addition, the present invention also provides a water outlet faucet, which includes a faucet body, which is connected to an external water supply and is provided with two water outlet pipes, and the above-mentioned push valve is installed in the faucet body. Through the sealing ring installed on the outer shell 40 of the push valve, the water inlet pipe on the faucet body can be sealed and connected with the water inlet 41 of the push valve, and the two water outlet pipes can also be sealed and connected with the upper water outlet 42 and the lower water outlet 43 of the push valve. By using the push valve, the water outlet faucet can have the function of switching water outlet by pressing.

[0078] The present invention provides a push valve and a water outlet faucet, which are provided with two symmetrical pressure-bearing structures, and each pressure-bearing structure has two symmetrical pressure-bearing surfaces, so that when water passes through the push valve, the water pressures of the corresponding pressure-bearing surfaces will cancel each other out, thereby eliminating the force of the water pressure on the valve stem, reducing the resistance encountered during the pressing operation, and ensuring the pressing feel of the push valve.

[0079] The description of the above specification and embodiments is used to explain the protection scope of the present invention, but does not constitute a limitation on the protection scope of the present invention. Through the enlightenment of the present invention or the above embodiments, ordinary technicians in this field can obtain modifications, equivalent substitutions or other improvements to the embodiments of the present invention or part of the technical features thereof through logical analysis, reasoning or limited experiments, which should be included in the protection scope of the present invention.

Claims

1. A push valve, comprising a valve housing, a valve stem and a push assembly, wherein the valve stem is driven by the push assembly to slide along the axial direction of the valve housing between a first position and a second position to switch the water outlet or water inlet state of the valve housing, characterized in that: The valve stem is provided with two groups of pressure-bearing structures along its axial direction, and each group of pressure-bearing structures includes two pressure-bearing surfaces which are arranged opposite to each other and have equal pressure-bearing areas; When the valve stem is located at the first position or the second position, a corresponding set of pressure-bearing structures receives water.

2. A push valve according to claim 1, characterized in that: The valve housing is provided with a water inlet and two water outlets. When the valve stem is located at the first position or the second position, the water inlet is respectively connected to one of the water outlets.

3. A push valve as claimed in claim 2, characterized in that: The valve housing is provided with two water passing surfaces respectively between the water inlet and the two water outlets; the valve stem comprises a rod body and a blocking gasket; the rod body slides axially along the valve housing between a first position and a second position; the blocking gasket is fixed to the rod body and blocks one of the water passing surfaces respectively when the rod body switches between the first position and the second position; the pressure-bearing structure is respectively located on both sides of the blocking gasket.

4. A push valve as claimed in claim 3, characterized in that: The rod body is provided with a gasket installation groove; the blocking gasket is sleeved in the gasket installation groove and is limited by the groove wall of the gasket installation groove.

5. A push valve as claimed in claim 4, characterized in that: The valve housing comprises an outer shell and an inner seat; the inner seat is fixed inside the outer shell, and a sliding cavity is formed in the middle thereof; the rod body is inserted into the sliding cavity and slides axially along the sliding cavity between a first position and a second position.

6. A push valve according to any one of claims 1 to 5, characterized in that: The pressing assembly comprises a pressing seat, an active button, a follower, a pressing spring and a return spring; The pressing seat is fixed to the valve housing, and the inner wall thereof is provided with a plurality of groups of first parking positions and second parking positions at different axial heights along the circumferential direction; The active button slides axially along the pressing seat, and a ratchet structure is provided at the bottom thereof; The follower is rotatably connected to the active button, and is provided with an inclined surface structure at a position corresponding to the ratchet structure of the active button along the circumferential direction; The pressing spring acts between the valve stem and the active button; The return spring acts between the valve stem and the valve housing, and its action direction is opposite to the action direction of the follower on the valve stem; The active button obliquely abuts against the follower when pressed, and drives the follower to rotate so as to switch between the first stop position and the second stop position, and the follower pushes against the valve stem to drive the valve stem to switch between the first position and the second position.

7. A press valve according to any one of claims 3 to 5, characterized in that: The pressing assembly includes a pressing seat, an active button, a follower, a first spring and a second spring; The pressing seat is fixedly mounted on the valve housing, and its inner wall is provided with a plurality of groups of first parking positions and second parking positions at different axial heights along the circumferential direction; The active button slides axially along the pressing seat, and a ratchet structure is provided at the bottom thereof; The follower is rotatably connected to the active button, and is provided with an inclined surface structure at a position corresponding to the ratchet structure of the active button along the circumferential direction; The first spring acts between the valve stem and the follower; The second spring acts between the valve stem and the valve housing, and acts on the valve stem opposite to the first spring; The active button is pressed against the follower obliquely when pressed, and drives the follower to rotate so as to switch between the first stop position and the second stop position. When the follower is in the first stop position, the first spring is extended to a state less than the elastic force of the second spring so that the valve stem stops in the first position. When the follower is in the second stop position, the first spring is compressed to a state greater than the elastic force of the second spring so that the valve stem stops in the second position.

8. A push valve as claimed in claim 7, characterized in that: The pressing assembly also includes a positioning bead; the follower is provided with a follower installation groove for the first spring to extend into and install; the positioning bead is located between the end of the first spring in the follower installation groove and the bottom wall of the follower installation groove.

9. A push valve as claimed in claim 8, characterized in that: The two ends of the rod body are respectively provided with a first mounting groove and a second mounting groove which are recessed along the axial direction of the rod body; the first mounting groove and the second mounting groove are respectively used for the first spring and the second spring to extend into and abut against their respective bottom walls.

10. A water outlet faucet, comprising a faucet body, wherein the faucet body is connected to an external water supply and is provided with at most two water outlet pipes, characterized in that: The faucet body is equipped with a push valve as described in any one of claims 1-9, and the push valve is provided with a water inlet and at most two water outlets; the water inlet is connected to an external water supply, and the water outlet is sealed and connected to the corresponding water outlet pipeline.

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