CN217120578U - Go out water switching mechanism - Google Patents

Abstract

The utility model discloses a water outlet switching mechanism, which comprises a shell, a switch, a valve body and a switching rod, wherein a water inlet cavity and at least two water outlet cavities are formed in the shell, the valve body is arranged corresponding to the water outlet cavities, a first via hole for communicating the corresponding water outlet cavities and the water inlet cavities is arranged on the valve body, the switching rod penetrates through the valve body, and a first sealing element is arranged below the first via hole; the change-over switch comprises a button and a positioning seat, and a swinging fulcrum is arranged in the center of the bottom of the positioning seat; the button is hinged with the shell, the bottom of the button is elastically contacted with the positioning seat, and a driving part corresponding to the switching rod is formed at the upper part of the button; when any one driving part is pressed down, the corresponding switching rod and the first sealing piece on the switching rod move downwards to enable the corresponding water outlet cavity to be communicated with the water inlet cavity, and the positioning seat swings downwards towards one side of the containing cavity far away from the pressed driving part by taking the swinging fulcrum as a center. The utility model discloses it is directly perceived, light convenient to go out water mode switch, and structural stability is good.

Description

Go out water switching mechanism

Technical Field

The utility model relates to a go out water and switch technical field, especially relate to a go out water switching mechanism.

Background

At present, a shower head is generally in a single-button switching structure, the operation is simple, but the problem that a consumer easily presses a button to miss a required water outlet mode exists generally. This is because consumers often do not know how to press a few buttons to select a desired water outlet mode, press too quickly tends to miss the desired water outlet mode, and need to press enough cycles to select the desired functional water outlet mode after missing the desired water outlet mode, resulting in poor use experience.

In order to facilitate the switching of the water outlet modes, shower heads with a plurality of buttons are available on the market, and consumers can directly select the desired water outlet mode by pressing different buttons. However, the existing multi-button switching structure generally gathers a plurality of buttons in one operation area, the button operation hand feeling is tight, the button is easy to be blocked, and the button is easy to be operated by mistake because the positions of the buttons are closer. In the multi-button switching structure, although a certain distance is arranged between the positions of the buttons, a good switching hand feeling is obtained, but the multi-button switching structure has the problems of multiple parts, difficulty in assembly and poor product production stability.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a go out water switching mechanism is provided, its mode switching that goes out water is directly perceived, light convenient, and structural stability is good.

In order to solve the technical problem, the utility model provides a water outlet switching mechanism, which comprises a shell, a switch arranged on the shell, a valve body arranged in the shell, and a switching rod linked with the switch,

a water inlet cavity and at least two water outlet cavities are formed in the shell, the valve body is arranged corresponding to the water outlet cavities, first through holes for communicating the corresponding water outlet cavities and the water inlet cavities are formed in the valve body, the switching rod penetrates through the valve body, and first sealing elements are arranged below the first through holes;

a first elastic reset piece which is abutted against the switching rod is arranged in the water inlet cavity, and when the switching switch is not pressed, the first elastic reset piece enables a first sealing piece to block the first through hole;

the switch comprises a button and a positioning seat, the shell is provided with an accommodating cavity matched with the positioning seat, and the center of the bottom of the positioning seat is provided with a swinging fulcrum; the middle part of the button is hinged with the shell, the bottom of the button extends into the accommodating cavity and is in elastic contact with the positioning seat, and a driving part corresponding to the switching rod is formed at the upper part of the button; when any one driving part is pressed down, the corresponding switching rod and the first sealing piece on the switching rod move downwards to enable the corresponding water outlet cavity to be communicated with the water inlet cavity, and the positioning seat swings downwards in the accommodating cavity towards one side far away from the pressed driving part by taking the swinging fulcrum as a center.

As an improvement of the above scheme, a limit groove is formed in the top surface of the positioning seat, and when the driving part is pressed to the bottom, the bottom of the button is in elastic contact with the groove bottom and the groove wall of the limit groove.

As an improvement of the above solution, the positioning seat is formed with support arms disposed around the swing fulcrum and corresponding to the driving portions one to one, and when any one of the driving portions is pressed down, the support arm on the side far from the pressed driving portion abuts against the bottom surface of the accommodating cavity.

As an improvement of the above scheme, the swing fulcrum is a protrusion formed in the center of the bottom of the positioning seat, the protrusion abuts against the bottom surface of the accommodating cavity, and the surface of the protrusion is a spherical surface or a conical surface.

As an improvement of the scheme, the periphery of the protrusion is provided with a guide rib, the guide rib is positioned between two adjacent support arms, and the thickness of the guide rib in the direction vertical to the bottom surface of the accommodating cavity is not more than 2/3 of the thickness of the protrusion;

the bottom surface and the side wall of the guide rib are in transition connection through chamfering or rounding, and the guide rib is far away from the end surface of one end of the protrusion and the bottom surface and is in transition connection through rounding.

As an improvement of the scheme, the button comprises a button body, a bushing seat and a bolt, wherein a hinge shaft movably hinged with the shell is arranged on the bushing seat, the hinge shaft and the bolt are arranged in a crossed mode, and the button body is hinged with the bushing seat through the bolt.

As an improvement of the above scheme, the button body is provided with a guide cylinder with an opening at the bottom, a third elastic reset piece and a positioning pin are arranged in the guide cylinder, one end of the positioning pin is abutted to the third elastic reset piece, and the other end of the positioning pin is abutted to the positioning seat.

As an improvement of the above scheme, be equipped with the second via hole that feeds through out the water cavity and intake antrum in the casing, the valve body is including locating the disk seat in the water cavity, locating second elasticity in the disk seat resets the piece, and by second elasticity resets the piece and supports and establish second sealing member on the second via hole, the second sealing member with the disk seat inner wall is sealed.

As an improvement of the above scheme, an inner cavity for accommodating the second elastic reset piece is arranged on one side of the second sealing piece, which is far away from the second via hole, and the cross-sectional area of the inner cavity is larger than that of the second via hole.

As the improvement of the scheme, the second sealing element comprises a sealing seat, an end face sealing gasket and a wall face sealing ring, the wall face sealing ring is sleeved on the periphery of the sealing seat, and the end face sealing gasket is arranged on one side, opposite to the second through hole, of the sealing seat.

As an improvement of the above scheme, the first elastic reset piece is a tower spring, the inner diameter of the tower spring from bottom to top is gradually reduced, and the switching rod is provided with a convex ring abutted to the top of the tower spring.

As an improvement of the above scheme, the shell comprises a base and an upper cover, the upper cover is hermetically connected with the base, the water inlet cavity, the water outlet cavity and the accommodating cavity are formed on the base, and the button is hinged with the upper cover.

Implement the utility model discloses, following beneficial effect has:

the utility model provides a water outlet switching mechanism, which is characterized in that a switching switch and a switching rod linked with the switching switch are arranged, the switching rod is arranged corresponding to a water outlet cavity, a driving part corresponding to the switching rod is formed on a button of the switching switch, and any driving part is pressed down to enable the switching rod and a first sealing element on the switching rod to move downwards;

different driving parts on the press button can switch different water outlet cavities to discharge water, the switching of the water outlet modes is intuitive, and a user can conveniently select a desired water outlet mode;

only one group of change-over switches are required to be assembled, more than two kinds of water outlet switching can be realized by pressing different driving parts of the buttons, the assembly of parts is simplified, and the assembly is convenient;

in addition, the button is articulated with the casing, the bottom and the positioning seat elastic contact of button, the positioning seat can be in the installation cavity with the swing fulcrum swing, in switching process, the drive division of button is pressed, and with the switching pole butt, take place freely to deflect with casing articulated button is whole, and make the positioning seat use the swing fulcrum to swing down to keeping away from the drive division one side of being pressed as the center, whole change over switch is in balanced state, the button can not take place the distortion or the situation of blocking, structural stability is good, long service life is high, and press the very level and smooth and easy of process, the switching is light, feel good.

Drawings

Fig. 1 is a schematic perspective view of an embodiment of a water outlet switching mechanism according to the present invention;

FIG. 2 is a front view of the base of FIG. 1;

FIG. 3 is a schematic view of the cross-sectional A-A structure of FIG. 2;

FIG. 4 is a top view of the base of FIG. 1;

FIG. 5 is a schematic view of the cross-sectional structure B-B of FIG. 4;

FIG. 6 is a schematic view of the exploded structure of FIG. 1;

figure 7 is a first perspective view of the positioning socket of figure 6;

FIG. 8 is a top view of FIG. 1;

FIG. 9 is a schematic view of the cross-sectional C-C structure of FIG. 8;

FIG. 10 is an enlarged view of section E of FIG. 9;

fig. 11 is a second perspective view of the positioning socket of fig. 6;

FIG. 12 is a schematic view of the cross-sectional D-D configuration of FIG. 8;

fig. 13 is an enlarged schematic view of the portion F of fig. 12.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings.

As shown in fig. 1, the present invention provides an embodiment of a water outlet switching mechanism, which includes a housing 1, a switch 2 disposed on the housing 1, a valve body disposed inside the housing 1, and a switching rod 4 linked with the switch 2, with reference to fig. 2 to 5, wherein a water inlet chamber a and at least two water outlet chambers b are formed in the housing 1, with reference to fig. 6, the valve body is disposed corresponding to the water outlet chambers b, the valve body is provided with a first via hole 311 communicating the corresponding water outlet chambers b with the water inlet chamber a, the switching rod 4 penetrates through the valve body, and a first sealing member 5 is disposed below the first via hole 311; a first elastic reset piece 6 abutted against the switching rod 4 is arranged in the water inlet cavity a, and when the change-over switch 2 is not pressed, the first elastic reset piece 6 enables a first sealing piece 5 to block the first through hole 311; the change-over switch 2 comprises a button 21 and a positioning seat 22, an accommodating cavity c matched with the positioning seat 22 is formed in the shell 1, and with reference to fig. 7, a swing fulcrum 221 is arranged in the center of the bottom of the positioning seat 22; the middle part of the button 21 is hinged with the shell 1, the bottom of the button 21 extends into the accommodating cavity c and is in elastic contact with the positioning seat 22, and a driving part 21A corresponding to the switching rod 4 is formed at the upper part of the button 21; when any one of the driving parts 21A is pressed, the corresponding switching rod 4 and the first sealing member 5 thereon move downward, so that the corresponding water outlet cavity b is communicated with the water inlet cavity a, and the positioning seat 22 swings downward in the accommodating cavity c away from the pressed driving part 21A around the swing fulcrum 221.

In the embodiment, the switch 2 and the switch rod 4 linked with the switch 2 are arranged, the switch rod 4 is arranged corresponding to the water outlet cavity b, the button 21 of the switch 2 is provided with the driving part 21A corresponding to the switch rod 4, and the switch rod 4 and the first sealing member 5 on the switch rod 4 can move downwards by pressing any one of the driving parts 21A, so that the first sealing member 5 unblocks the first through hole 311 on the valve body, and the corresponding water outlet cavity b is communicated with the water inlet cavity a; different water outlet cavities b can be switched to discharge water by pressing different driving parts 21A on the button 21, and the switching of the water outlet modes is intuitive, so that a user can conveniently select a desired water outlet mode; only one group of change-over switches 2 is required to be assembled, and more than two kinds of water outlet switching can be realized by pressing different driving parts 21A of the buttons 21, so that the assembly of parts is simplified, and the assembly is convenient; in addition, the button 21 is articulated with the casing 1, the bottom and the positioning seat 22 elastic contact of button 21, positioning seat 22 can be in the installation cavity with the swing fulcrum 221 swing, in the switching process, the drive division 21A of button 21 is pressed, and with switching rod 4 butt, the whole button 21 articulated with casing 1 takes place freely to deflect, and make positioning seat 22 use swing fulcrum 221 as the center to keep away from the drive division 21A one side down swing, whole change over switch 2 is in balanced state, button 21 can not take place the distortion or the situation of blocking, structural stability is good, long service life, and the pressing process is very smooth and easy, the switching is light, feel.

Specifically, the casing 1 includes a base 11 and an upper cover 12, the upper cover 12 and the base 11 are connected in a sealing manner, the water inlet cavity a, the water outlet cavity b and the accommodating cavity c are formed on the base 11, and the button 21 is hinged to the upper cover 12.

With reference to fig. 8 to 10, the button 21 specifically includes a button body 211, a bushing seat 212, and a pin 213, a hinge shaft movably hinged to the upper cover 12 is disposed on the bushing seat 212, the hinge shaft and the pin 213 are crosswise disposed, and the button body 211 is hinged to the bushing seat 212 through the pin 213. The upper cover 12 is provided with a shaft hole 121 for mounting the hinge shaft, and for facilitating free deflection of the button body 211, the shaft hole 121 is reserved with a preset distance along the pressing direction, so that the hinge shaft can generate displacement along the pressing direction in the shaft hole 121.

The button body 211 is provided with a guide cylinder 21B with an opening at the bottom, the upper cover 12 is provided with a through hole for the guide cylinder 21B of the button 21 to pass through, the guide cylinder 21B extends into the accommodating cavity c through the bushing seat 212, and the bolt 213 passes through the guide cylinder 21B and the bushing seat 212. A third elastic reset piece 214 and a positioning pin 215 are arranged in the guide cylinder 21B, one end of the positioning pin 215 is abutted against the third elastic reset piece 214, and the other end is abutted against the positioning seat 22.

When the driving portion 21A is pressed to the bottom, the positioning socket 22 swings to an inclined state with the swing fulcrum 221 at the center of the bottom as the center, the top surface thereof is an inclined surface, and a frictional force opposite to the elastic force of the first elastic restoring member 6 exists between the positioning pin 215 at the bottom of the push button 21 and the inclined surface, and the frictional force can be made larger than the elastic force of the first elastic restoring member 6 by means of roughening the inclined surface or the end surface of the positioning pin 215. Thus, even when the driving part 21A is released, the driving part 21A of the button 21 and the switching lever 4 corresponding to the driving part 21A can be maintained at the current position, that is, the corresponding outlet chamber b and the inlet chamber a can be continuously maintained in communication.

With reference to fig. 11, the top surface of the positioning seat 22 of this embodiment is provided with a limiting groove 222, and when the driving portion 21A is pressed to the bottom, the bottom of the button 21 is in elastic contact with the groove bottom and the groove wall of the limiting groove 222. Therefore, the deflection angle of the whole button 21 when the driving part 21A is pressed down can be limited to a certain degree, when the pressure applied to the driving part 21A is too large, the protection effect can be achieved, and the button 21 is prevented from generating large deflection when the driving part 21A is pressed by external gravity, so that the switching rod 4 is prevented from being broken, and the water outlet switching structure is prevented from failing.

The swing fulcrum 221 may be directly formed on the bottom surface of the accommodating cavity c of the base 11, or may be formed in the center of the bottom of the positioning seat 22. For the convenience of structure forming and matching, the swing fulcrum 221 is preferably a protrusion formed at the center of the bottom of the positioning seat 22, the protrusion abuts against the bottom surface of the accommodating cavity c, and the surface of the protrusion is a spherical surface or a conical surface, so as to ensure that the positioning seat 22 can swing freely when the top is stressed.

The positioning seat 22 is formed with support arms 223 provided around the swing fulcrum 221 and corresponding to the driving portions 21A one-to-one, and when any one of the driving portions 21A is pressed, the support arm 223 on the side away from the pressed driving portion 21A abuts against the bottom surface of the accommodating chamber c. The support arm 223, which swings the positioning base 22 downward, is located in the opposite direction of the guide tube 21B from the drive section 21A and the switching lever 4, which are pressed downward.

When the driving portions 21A of the push buttons 21 are not pressed, the guide tube 21B and the swing fulcrum 221 are positioned on the same straight line parallel to the switching lever 4.

The periphery of the protrusion is provided with a guide rib 224, the guide rib 224 is positioned between two adjacent support arms 223, and the thickness of the guide rib 224 in the direction vertical to the bottom surface of the accommodating cavity c is not more than 2/3 of the thickness of the protrusion; the bottom surface and the side wall of the guide rib 224 are connected in a chamfering or rounding transition mode, and the end surface of the guide rib 224 far away from one end of the protrusion is connected in a rounding transition mode. The guiding rib 224 helps the positioning socket 22 swing quickly until the supporting arm 223 abuts against the bottom surface of the accommodating cavity c.

With reference to fig. 12 and 13, a second through hole 111 communicating the water outlet cavity b with the water inlet cavity a is arranged in the base 11, the valve body includes a valve seat 31 arranged in the water outlet cavity b, a second elastic reset piece 32 arranged in the valve seat 31, and a second sealing piece 33 abutted by the second elastic reset piece 32 and arranged on the second through hole 111, and the second sealing piece 33 is sealed with the inner wall of the valve seat 31. The top of the valve seat 31 is provided with a third sealing member 7 which is connected with the upper cover 12 in a sealing way.

An inner cavity d for accommodating the second elastic resetting piece 32 is formed in one side, away from the second through hole 111, of the second sealing piece 33, and the first sealing piece 5 can prevent water in the inner cavity d from directly entering the water outlet cavity b. The cross-sectional area of the inner cavity d is preferably larger than the cross-sectional area of the second via hole 111. When the water outlet cavity b is not communicated with the water inlet cavity a, the cross sectional area of the inner cavity d is larger than the water pressure on the inner side and the outer side of the cross sectional area of the second through hole 111, so that the pressure acting on the inner cavity d side of the second sealing element 33 is larger than the pressure acting on the water inlet cavity a side, the pressure difference can help to press the second sealing element 33 against the end surface of the second through hole 111, sealing is performed by means of the water pressure difference, and water in the water inlet cavity a is prevented from directly entering the water outlet cavity b through the second through hole 111.

The second elastic restoring member 32 may additionally provide a pressure for abutting the second sealing member 33 against the end surface of the second via hole 111, thereby preventing a problem of poor sealing due to instantaneous fluctuation of the water pressure of the inlet chamber a.

The second sealing member 33 specifically includes a sealing seat 331, an end face sealing gasket 332 and a wall face sealing gasket 333, the wall face sealing gasket 333 is sleeved on the periphery of the sealing seat 331, the end face sealing gasket 332 is arranged on the side of the sealing seat 331 opposite to the second through hole 111. The wall sealing ring 333 prevents water in the inner cavity d from directly entering the outlet cavity b, and the end sealing ring 332 helps prevent water in the inlet cavity a from directly entering the outlet cavity b through the second through hole 111.

Because the rod diameter of the switching rod 4 is small, in order to ensure that the first elastic resetting piece 6 can be stably tensioned and supported between the switching rod 4 and the cavity bottom of the water inlet cavity a, the first elastic resetting piece 6 of the embodiment is preferably a tower spring, the inner diameter of the tower spring from bottom to top is gradually reduced, and the switching rod 4 is provided with a convex ring 41 abutted to the top of the tower spring.

This embodiment realizes the sealed and shutoff of play water cavity b and intake antrum a with the cooperation of second sealing member 33 and switching lever 4, and 4 rod footpaths of switching lever are less, and the bottom water pressure effort that receives is little, can realize going out the water with less drive power and switch, switch easily laborsavingly.

The play water switching mechanism of this embodiment is when going out water cavity b and intake antrum a and not switching on: under the action of the tower spring, the first seal 5 on the switching lever 4 seals the first through hole 311 of the seal holder 331. At this time, the water inlet cavity a and the inner cavity d in the sealing seat 331 form a closed area, and because the cross-sectional area of the inner cavity d is larger than the cross-sectional area of the second via hole 111, the end face sealing pad 332 and the sealing seat 331 must be pressed against the end face of the second via hole 111 on the base 11, and sealing is performed by means of water pressure difference, so that the waterway in this state is in a closed state.

The play water switching mechanism of this embodiment is when going out water cavity b and intake antrum a and switching on: under the action of the switching force of the driving part 21A, the switching rod 4 moves downwards to open the first via hole 311, so that the water flow in the inner cavity d flows out from the first via hole 311, the closed area is influenced by pressure relief, the water inlet pressure of the water inlet cavity a is smaller than the water flow pressure of the inner cavity d, the end face sealing gasket 332 and the sealing seat 331 are pushed open under the action of pressure difference, and the water flow in the water inlet cavity a directly flows into the specific water outlet cavity b through the second via hole 111 to form a water outlet state.

When the switching force of the driving part 21A is unloaded, a friction force exists between the positioning pin 215 at the bottom of the button 21 and the inclined plane, and a component force opposite to the elastic force of the first elastic resetting piece 6 is greater than the elastic force, so that the button 21 and the switching rod 4 corresponding to the driving part 21A are kept at the current position, and the corresponding water outlet cavity b is continuously communicated with the water inlet cavity a.

The play water switching mechanism of this embodiment can be applicable to the structure application of handheld gondola water faucet, head gondola water faucet to and various valves.

The foregoing is a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations are also considered as the protection scope of the present invention.

Claims (12)

1. A water outlet switching mechanism is characterized by comprising a shell, a switch arranged on the shell, a valve body arranged in the shell, and a switching rod linked with the switch,

a water inlet cavity and at least two water outlet cavities are formed in the shell, the valve body is arranged corresponding to the water outlet cavities, first through holes for communicating the corresponding water outlet cavities and the water inlet cavities are formed in the valve body, the switching rod penetrates through the valve body, and first sealing elements are arranged below the first through holes;

a first elastic reset piece which is abutted against the switching rod is arranged in the water inlet cavity, and when the switching switch is not pressed, the first elastic reset piece enables a first sealing piece to block the first through hole;

the switch comprises a button and a positioning seat, the shell is provided with an accommodating cavity matched with the positioning seat, and the center of the bottom of the positioning seat is provided with a swinging fulcrum; the middle part of the button is hinged with the shell, the bottom of the button extends into the accommodating cavity and is in elastic contact with the positioning seat, and a driving part corresponding to the switching rod is formed at the upper part of the button; when any one driving part is pressed down, the corresponding switching rod and the first sealing piece on the switching rod move downwards to enable the corresponding water outlet cavity to be communicated with the water inlet cavity, and the positioning seat swings downwards in the accommodating cavity towards one side far away from the pressed driving part by taking the swinging fulcrum as a center.

2. The effluent switching mechanism of claim 1, wherein a top surface of said positioning seat is formed with a limiting groove, and when said driving portion is pressed to the bottom, a bottom of said button is in elastic contact with a groove bottom and a groove wall of said limiting groove.

3. The effluent switching mechanism according to claim 1 or 2, wherein said positioning base is formed with support arms disposed around the swing fulcrum and corresponding to said driving portions one to one, and when any one of said driving portions is pressed, said support arm on the side away from the pressed driving portion abuts against the bottom surface of the accommodating chamber.

4. The effluent switching mechanism of claim 1, wherein said pivot is a protrusion formed at the center of the bottom of said positioning socket, said protrusion abuts against the bottom surface of said receiving cavity, and the surface of said protrusion is a spherical surface or a conical surface.

5. The effluent switching mechanism of claim 4, wherein the periphery of said protrusion is provided with a guiding rib, said guiding rib is located between two adjacent supporting arms, and the thickness of said guiding rib in the direction perpendicular to the bottom surface of the accommodating cavity is not more than 2/3 of the thickness of said protrusion;

the bottom surface and the side wall of the guide rib are in transition connection through chamfering or rounding, and the guide rib is far away from the end surface of one end of the protrusion and the bottom surface and is in transition connection through rounding.

6. The effluent switching mechanism of claim 1, wherein said button comprises a button body, a bushing seat and a pin, said bushing seat is provided with a hinge shaft movably hinged with said housing, said hinge shaft is crossed with said pin, said button body is hinged with said bushing seat through said pin.

7. The effluent switching mechanism of claim 6, wherein said button body has a guide cylinder with an open bottom, said guide cylinder having a third resilient return member and a positioning pin disposed therein, one end of said positioning pin abutting said third resilient return member and the other end abutting said positioning seat.

8. The effluent switching mechanism according to claim 1, wherein a second through hole communicating the effluent chamber and the water inlet chamber is provided in said housing, said valve body comprises a valve seat provided in the effluent chamber, a second elastic reset member provided in said valve seat, and a second sealing member abutted by said second elastic reset member and provided on said second through hole, said second sealing member being sealed with an inner wall of said valve seat.

9. The effluent switching mechanism of claim 8, wherein a side of said second seal member remote from said second aperture defines an interior cavity for receiving said second resilient return member, said interior cavity having a cross-sectional area greater than a cross-sectional area of said second aperture.

10. The effluent switching mechanism of claim 8 or 9, wherein said second sealing member comprises a sealing seat, a face gasket, and a wall gasket, said wall gasket is disposed around the periphery of said sealing seat, and said face gasket is disposed on a side of said sealing seat opposite to said second via hole.

11. The effluent switching mechanism of claim 1 or 2, wherein the first elastic return member is a tower spring, the inner diameter of the tower spring decreases from bottom to top, and the switching lever is provided with a convex ring abutting against the top of the tower spring.

12. The effluent switching mechanism of claim 1 or claim 2, wherein said housing comprises a base and an upper cover, said upper cover being sealingly connected to said base, said inlet chamber, outlet chamber and receiving chamber being formed in said base, said button being hingedly connected to said upper cover.

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