WO2019153670A1 - Switch valve core and water outlet device - Google Patents

Abstract

Disclosed are a switch valve core and a water outlet device. The switch valve core comprises a driven part (1), a transmission shaft (2), a sealing member (3), a diaphragm (6), a pressure chamber (51) and a valve body (7). The pressure chamber (51) is used for forming the same water pressure on two sides of the diaphragm (6) to balance water pressure, so that the resistance against an operated member is small and stable, and the operation force value of the driven part (1) does not suddenly change as the water pressure changes. An internal cavity of the sealing member (3) can absorb an impact force of an operating force on the driven part (1) during an idle running stage, and during two or more processes in which the sealing member (3) is compressed and deformed, the force fed back to the transmission shaft (2) and the driven part (1) is stable and continuous, so that a user needs less force to operate, the operation process is stable and continuous, and the use experience is greatly improved.

Description

Switch valve plug and water outlet

cross reference

The present disclosure claims priority to Chinese Patent Application No. 20110012, the entire disclosure of which is hereby incorporated by reference in its entirety in its entirety in the the the the the the the the the

Technical field

The invention relates to sanitary technology, in particular to an on-off valve core and a water discharge device with small operation resistance.

Background technique

In the existing sanitary field, the valve core structure for controlling the water switch mainly includes a rotary valve core and a push valve core. The rotary spool controls the opening or closing of the water passage by rotating the handle. Each time it is turned on, it needs to rotate the handle to a certain angle to achieve the proper amount of water. When closing, it also needs to reverse the same angle.

The existing push-type valve core structure generally performs axial movement by pressing the transmission rod and automatic rebound of the transmission rod to respectively realize the closing and opening of the water passage. Although such a structure simplifies the operation of the switching water passage, the existing push-type valve core directly relies on the transmission rod to perform switching of the sealing member and the valve opening and closing, and the hydrostatic pressure that the transmission rod needs to directly overcome is large, and the manual operation transmission is performed. It takes a lot of effort when it comes to the pole. On the other hand, in the user's pressing operation, since the transmission rod has an empty stroke and a relatively large damped sealing or boiling water stroke, the resistance difference between the two strokes is large, which will cause a certain degree to the user. Misjudgment or discomfort can affect the user's experience.

Summary of the invention

It is a primary object of the present invention to overcome at least one of the above-discussed deficiencies of the prior art and to provide a switch valve plug and a water discharge device that have low and stable operating resistance.

Embodiments of the present invention provide a switch valve core including a driven portion, a transmission shaft, a seal, a diaphragm, a pressure chamber, and a valve body; the driven portion receives an operation; and the driven portion is coupled to the One end of the transmission shaft, the driven portion can drive the transmission shaft to perform axial movement; the sealing member is coupled to the other end of the transmission shaft, and the sealing member is located at the other end of the transmission shaft and the diaphragm The sealing member is made of an elastic material, and the sealing member has a cavity therein; the diaphragm has a first surface and a second surface, and the diaphragm is provided with a pressure releasing hole, and the pressure releasing hole is penetrated The first surface and the second surface, the sealing member is located at the pressure relief hole on the second surface, the sealing member can seal the pressure relief hole; the diaphragm has a water inlet a hole that penetrates the first surface and the second surface; the pressure chamber is located on a side of the second surface of the diaphragm, and the pressure chamber passes through the water inlet hole Connecting the valve body, the other end of the drive shaft and the sealing member are located in the pressure chamber The valve body has a water inlet space and a water outlet space, and a valve port is located between the water inlet space and the water outlet space, and the diaphragm can seal to the valve port or release a seal to the valve port.

According to an embodiment of the invention, the cavity is further connected to a through hole through which the cavity communicates with the pressure chamber.

According to an embodiment of the invention, the cavity is in the shape of a drum, a cone, an anchor, a cylinder or a gourd.

According to an embodiment of the present invention, a reset member is further coupled to the drive shaft, and the drive shaft compresses the reset member in an axial direction during a water shutoff operation; when the water is opened, the reset member is The drive shaft provides a restoring force in the axial direction.

According to an embodiment of the present invention, the reset member has a hat shape, the reset member has a hat shape, a wave shape or a column shape, and the reset member is actuated on the drive shaft, and the reset member is made of elastic material. material.

According to an embodiment of the present invention, the driven portion includes a switching holding mechanism that presses one end of the transmission shaft at one end, and the switching holding mechanism switches between the first position and the second position. The first position corresponds to the diaphragm being sealed to the valve port, and the second position corresponds to a state in which the diaphragm is sealed to the valve port.

According to an embodiment of the present invention, the switching holding mechanism is a mechanism that realizes switching holding by a ratchet fitting structure or a heart-shaped cam fitting structure.

According to an embodiment of the present invention, the switch holding mechanism includes a ratchet seat, a ratchet shaft, and a ratchet rod; the ratchet shaft is assembled with the ratchet rod, and the ratchet shaft and the ratchet rod are sleeved and assembled. In the ratchet seat, one end of the ratchet shaft passes through the opening of the ratchet seat, and the outer end of the ratchet rod abuts one end of the transmission shaft; the inner side of the ratchet seat and the ratchet shaft and the The outer side of the ratchet rod is engaged by the ratchet structure, and the ratchet shaft and the ratchet rod abutting surface are also engaged by the ratchet structure.

In accordance with an embodiment of the present invention, the ratchet seat is fixedly coupled opposite the valve body to secure the components of the switch valve spool therebetween.

According to an embodiment of the present invention, there is further provided a pressure cap in which the pressure chamber is formed, the pressure cap is butted against the valve body, and the diaphragm is fixed to the pressure cap and the Between the interior of the valve body; the other end of the drive shaft penetrates the pressure cap, and the seal moves within the pressure cap.

According to an embodiment of the present invention, a pressure plate is further disposed between the restoring member and the pressure cap, and a sealing ring is further disposed between the pressure plate and the pressure cap, and the pressure cap corresponds to The sealing ring is provided with a sealing groove, and the sealing ring seals a matching gap between the driving shaft and the pressing cap, and the pressing plate blocks the fixing of the sealing ring.

According to an embodiment of the present invention, the diaphragm includes a skeleton and an elastic sheet, the skeleton is assembled with the elastic sheet, the skeleton is located on one side of the second surface, and the elastic sheet is located at the a side of the first surface; the skeleton forms the pressure relief hole and the water inlet hole.

According to an embodiment of the invention, wherein the skeleton has a conical projection surrounding the pressure relief hole, the conical projection is convex toward the pressure chamber, and the seal can be in the conical shape The top of the projection presses against the pressure relief hole.

According to an embodiment of the present invention, a spring is further disposed in the pressure chamber, one end of the spring abuts against the inner wall of the pressure chamber, and the other end abuts the diaphragm; the spring is also integrally formed with a function a pin, the function pin corresponding to the water inlet hole of the diaphragm, and the water inlet hole is cleaned by the function pin to prevent fouling of the dirt.

According to an embodiment of the invention, the sealing member is in the shape of a pouch having a side opening, and the sealing member opening is snap-fitted and fixed outside the convex ring of the other end of the transmission shaft.

According to an embodiment of the invention, the minimum resilience of the sealing member is greater than the elastic force required to reset the shape of the sealing member, and the maximum resilience of the sealing member is smaller than the required operating force of the diaphragm to seal the valve opening.

Another aspect of an embodiment of the present invention provides a water discharge device having the on-off valve core of any of the foregoing embodiments.

According to an embodiment of the present invention, the water outlet device includes a main body and the switch valve core, the main body has a water inlet, a water outlet, and a valve core mounting seat, and the valve core mounting seat is located at the water inlet and the outlet Between the nozzles, the switch valve core is installed in the valve plug mounting seat, the water inlet space of the switch valve core is connected to the water inlet, and the water outlet space of the switch valve core is connected to the water outlet.

According to an embodiment of the present invention, the valve plug mounting seat has a mounting operation port, the mounting operation port is coaxial with the water inlet; and the outlet is opposite to the installation operation port and the water inlet The nozzle faces to one side.

According to an embodiment of the present invention, a lock ring is fixedly assembled on the outer side of the valve cartridge mount, and the lock ring is pressed against the switch spool from the outside.

According to an embodiment of the present invention, there is further provided a button correspondingly assembled on the driven portion of the switching valve core, and the button and the switching valve core have an elastic returning member.

It can be seen from the above technical solutions that the beneficial effects of the embodiments of the present invention over the prior art are:

In the switch valve core structure provided by the embodiment of the invention, the water pressure balance is achieved by using the same water pressure on both sides of the sealing water diaphragm, so that the resistance received by the operating member is small and stable, and the operating force value of the driven portion does not follow. The water pressure changes and a mutation occurs.

In the water shutoff operation, the driven portion is moved by the seal of one end of the drive shaft to move toward the diaphragm, and the seal gradually approaches the pressure relief hole. When the seal seals the pressure relief hole on the diaphragm, the pressure chamber passes through After the nozzle is filled with water, the water pressure in the pressure chamber is balanced with the water pressure in the water inlet space. Next, the drive shaft is pushed by the driven portion, and at the same time, under the combined action of the spring restoring force and the diaphragm's own recovery characteristics, the continuation continues. The diaphragm between the pressure chamber and the water inlet space is pushed to move toward the valve port. When the diaphragm reaches the valve port, the diaphragm is sealed by the valve port due to the pressure difference due to the water pressure area of the diaphragm in the pressure chamber being larger than the water pressure area of the diaphragm facing the valve port. After that, the drive shaft will continue to move axially for a period of time due to the idle stroke of the driven part. During this period, the seal can still be deformed to a large extent, thereby weakening the feedback to the influence of the operating force, when the driven part moves excessively. After the stroke, the seal still maintains a certain degree of compression deformation, mainly to maintain the closing pressure of the valve port. In the above operation, in the process of two or more compression deformation of the sealing member, the force fed back to the transmission shaft and the driven portion is stable and continuous, the force required for the user operation is small, and the operation process is stable and continuous, and the use feeling is obtained. Great improvement.

DRAWINGS

The various objects, features and advantages of the present invention will become more apparent from the Detailed Description of Description The drawings are merely illustrative of the invention and are not necessarily to scale. In the drawings, like reference characters generally refer to the among them:

FIG. 1 is a schematic structural diagram of a switching valve core according to an exemplary embodiment.

FIG. 2 is a schematic diagram of an operational state in a structural principle of a switching valve spool according to an exemplary embodiment.

FIG. 3 is a schematic diagram of another operational state in the structural principle of a switching valve spool according to an exemplary embodiment.

FIG. 4 is a cross-sectional structural diagram of a switching valve core according to an exemplary embodiment.

Fig. 5 is a partially enlarged schematic view showing a portion A in Fig. 4;

FIG. 6 is an exploded perspective view of a switch valve spool according to an exemplary embodiment.

FIG. 7 is a schematic diagram showing the outer structure of a switching valve core according to an exemplary embodiment.

FIG. 8 is a schematic structural diagram of a water discharge device in a water shutoff mode according to an exemplary embodiment.

FIG. 9 is a schematic structural view of a water discharge device in a boiling water mode according to an exemplary embodiment.

FIG. 10 is a schematic structural view of a water outlet device applied to a kitchen faucet according to an exemplary embodiment.

11 is a schematic exploded view of a water outlet device applied to a kitchen faucet according to an exemplary embodiment.

FIG. 12 is a schematic diagram of the operation of the water outlet device applied to the kitchen faucet according to an exemplary embodiment.

FIG. 13 is a schematic diagram of the operation of the water outlet device applied to the extractable kitchen faucet according to an exemplary embodiment.

FIG. 14 is a schematic structural diagram of still another switching valve spool according to an exemplary embodiment.

FIG. 15 is a schematic structural view of still another switching valve core in a water shutoff mode according to an exemplary embodiment.

FIG. 16 is a schematic structural diagram of still another switching valve spool according to an exemplary embodiment.

In the figure: 1, the driven part; 11, the ratchet seat; 12, the ratchet shaft; 13, the ratchet rod; 14, the magnet; 15, the guide tube; 2, the drive shaft; 21, the first end; 22, the second end; 23, convex ring; 3, sealing member; 31, through hole; 32, cavity; 33, drum surface; 34, opening; 4, reset member; 45, pressure plate; 5, pressure cap; 51, pressure chamber; , operation hole; 53, sealing groove; 54, sealing ring; 55, retaining ring; 56, spring; 57, function pin; 6, diaphragm; 63, skeleton; 64, elastic piece; 66, pressure relief hole; 67, water inlet hole; 7, valve body; 71, water inlet space; 72, water outlet space; 73, valve port; 75, seal; 8, water outlet device body; 81, water inlet; 82, water outlet; 83, valve plug seat; 84, installation operation port; 85, lock ring; 86, button; 87, elastic reset.

Detailed ways

Example embodiments will now be described more fully with reference to the accompanying drawings. However, the example embodiments can be embodied in a variety of forms and should not be construed as being limited to the embodiments set forth herein. To those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and thus their detailed description will be omitted.

Although the relative terms such as "upper" and "lower" are used in the specification to describe the relative relationship of one component of the icon to another component, these terms are used in this specification for convenience only, for example, according to the accompanying drawings. The direction of the example described. It will be understood that if the device of the icon is flipped upside down, the component described above will become the component "below". When a structure is "on" another structure, it may mean that a structure is integrally formed on another structure, or that a structure is "directly" disposed on another structure, or that a structure is "indirectly" disposed through another structure. Other structures.

The terms "a", "an", "the", "sai" are used to mean the presence of one or more elements/components, etc.; the terms "including" and "having" are used to mean the inclusive. Meaning and means that there may be additional elements/components/etc. in addition to the listed elements/components/etc; the terms "first", "second", etc. are used only as marks, not the number of objects limit.

The inventors have found that the problem of the existing on-off valve spool is mainly that it is necessary to use the force of the operation to overcome the static pressure of the water, so that the transmission shaft has a stroke with a large difference in resistance between the two sections. Therefore, if the pressure required to switch between boiling water and water shutoff can be reduced, and the buffer is added between the transmission shaft and the driven water sealing member, the above problem can be effectively improved.

The embodiment of the invention provides a switching valve core, and FIG. 1 is a schematic structural diagram of a switching valve core according to an exemplary embodiment. Wherein, an elastically displaceable diaphragm 6 is disposed corresponding to the valve port 73, and the diaphragm 6 can block the valve port 73 with a surface, and a pressure chamber 51 is disposed on a side of the diaphragm 6 away from the valve port 73. The pressure chamber 51 communicates with the water inlet space 71 through a water inlet hole 67 in the diaphragm 6. Thus, the pressure chamber 51 can form a water pressure on the side away from the valve port 73, and during the stroke of the diaphragm 6 covering the valve port 73, a certain water pressure is supplied to overcome the water pressure from the side of the valve port 73, so that The force that effectively reduces the operation required for the axial stroke in the water shutoff operation. In this configuration, the water pressure balance is achieved by the same water pressure on both sides of the water sealing membrane, so that the resistance received by the operating member is small and stable, and the operating force value of the driven portion 1 does not change with the change of the water pressure.

At the same time, a sealing member 3 is fixed at the end of the transmission shaft 2, the sealing member 3 is located between the transmission shaft 2 and the diaphragm 6, the sealing member 3 is made of an elastic material, and the sealing member 3 has a cavity 32 inside, so that the sealing member 3 can provide a cushioning effect that can be buffered between the two strokes of the difference in the resistance of the drive shaft 2.

2 is a schematic diagram showing an action state in a structural principle of a switch valve core according to an exemplary embodiment, and FIG. 3 is another structural principle of a switch valve core according to an exemplary embodiment. A schematic diagram of an action state.

As shown in the figure, in the water shutoff operation, the driven portion 1 is moved to move the diaphragm 6 to the diaphragm 6 at one end of the drive shaft 2, as shown in FIG. 2, the seal member 3 gradually approaches the pressure relief hole 66. When the sealing member 3 seals the pressure relief hole 66 and the water in the pressure chamber 51 is filled by the water inlet 67, the water pressure in the pressure chamber 51 is balanced with the water pressure on the valve port 73 side, that is, the water pressure in the water inlet space 71. Next, the drive shaft 2 is pushed by the driven portion 1 while including the restoring force of the spring 56 and the recovery characteristic of the diaphragm 6 to continue to push the diaphragm 6 between the pressure chamber and the water inlet space. Moving, the diaphragm 6 is moved toward the valve port 73. During this process, the seal 3 at the end of the drive shaft 2 is compressed to a small extent, and the elastic force generated by the deformation is used to maintain the water shutoff of the pressure relief hole 66. stress. As shown in FIG. 3, the diaphragm 6 reaches the valve port 73 under the above-mentioned pressure balance and the pushing of the transmission shaft 2, the restoring force of the spring 56, and the recovery characteristic of the diaphragm 6, since the diaphragm is in the pressure chamber 51. The water pressure area is larger than the water pressure area of the diaphragm 6 facing the valve port 73. Under the pressure difference, the diaphragm seals the valve port 73. Due to the influence of the idle stroke of the driven portion 1, the drive shaft 2 will continue to move axially for a distance after the diaphragm 6 reaches the valve port 73. In the process, the seal 3 at the end of the drive shaft 2 is subjected to a large degree. Deformation, the elastic force generated by the deformation is used to weaken the obvious influence of the feedback to the user's operating force. After the end of the idle stroke of the driven portion 1, the sealing member 3 still maintains a certain degree of compression deformation, and the elastic force generated by the deformation is used for The closing pressure of the valve port 73 is maintained, so that the water shutoff is more strict and reliable. In the above two or more processes in which the sealing member 3 is deformed by pressure, the force fed back to the transmission shaft 2 and the driven portion 1 is stably and continuously, and the force required for the user operation is small, and there is no sense of discontinuity or sudden change. Use the feeling to get a big boost.

In the boiling water operation, the first diaphragm 6 is sealed at the valve port 73, and the idle stroke when the driven portion 1 is operated drives the transmission shaft 2 to move axially for a distance, during which the sealing member 3 has a large degree of deformation, thereby weakening the feedback to The apparent influence of the user's operating force, after the movable portion 1 moves over the idle stroke, the resetting member 4 drives the transmission shaft 2 to axially reset, and the sealing member 3 leaves the pressure relief hole 66, at which time the water in the pressure chamber 51 passes through. The pressure relief hole 66 flows into the water discharge space 72. At this time, the pressure chamber 51 communicates with the outside atmosphere through the pressure relief hole 66, the pressure chamber 51 is quickly released, and the pressure of the pressure chamber 51 is rapidly decreased, thereby generating a reverse pressure difference. The pressure difference pushes the diaphragm 6 away from the valve port 73, thereby achieving a boiling water operation.

The invention will be further exemplified below with reference to the accompanying drawings as follows:

FIG. 4 is a cross-sectional structural diagram of a switching valve core according to an exemplary embodiment. Fig. 5 is a partially enlarged schematic view showing a portion A in Fig. 4; FIG. 6 is an exploded perspective view of a switch valve spool according to an exemplary embodiment. FIG. 7 is a schematic diagram showing the outer structure of a switching valve core according to an exemplary embodiment.

As shown in FIG. 4, an embodiment of the present invention provides a switch valve core, which mainly includes a driven portion 1, a transmission shaft 2, a sealing member 3, a diaphragm 6, a pressure chamber 51, and a valve body 7.

The driven portion 1 can accept the operation of the user and drive to the drive shaft 2 to perform a switching operation. The first end 21 of the transmission shaft 2 abuts against the driven portion 1, and the driven portion 1 can drive the transmission shaft 2 to perform axial movement. It should be understood that the operation of the driven portion 1 may also be realized by a rotary operating member, for example, by using a rotary handle, the driving shaft 2 is driven to move axially by the cooperation of the thread and the screw; The implementation of 1 may include various structural forms that can be converted into axial actuation, and is not specifically limited. It should be understood that the transmission shaft 2 is not necessarily in contact with the driven portion 1, and the driven portion 1 can also indirectly drive the transmission shaft 2 by other materials, for example, between the driven portion 1 and the transmission shaft 2 There are spacers or transmissions (examples are exemplified below).

An integral structure between the first end 21 and the second end 22 of the transmission shaft 2 is directly transmitted between the driven portion 1 and the diaphragm 6, and the first end 21 of the transmission shaft 2 is located in the pressure chamber 51. Further, the second end 22 is located within the pressure chamber 51, and the drive shaft 2 is slidably sealed between the wall of the pressure chamber 51 and sealed by a seal ring 54.

The sealing member 3 is connected to the second end 22 of the transmission shaft 2, and the sealing member 3 is located between the second end 22 of the transmission shaft 2 and the diaphragm 6. The material of the sealing member 3 can be selected as an elastic material. In the embodiment of the invention, the sealing member The interior 3 has a cavity 32 to provide a cushioning action for the action of the drive shaft 2.

The diaphragm 6 has a first surface and a second surface. The diaphragm 6 is provided with a pressure relief hole 66 in the middle thereof. The pressure relief hole 66 penetrates the first surface and the second surface, and the sealing member 3 is located on the second surface opposite to the pressure relief hole 66. The seal 3 can seal the pressure relief hole 66. The diaphragm 6 has a water inlet hole 67 through which the water inlet hole 67 penetrates the first surface and the second surface; the pressure chamber 51 is located on the second surface side of the diaphragm 6, and the pressure chamber 51 communicates with the valve body through the water inlet hole 67. 7. The second end 22 of the drive shaft 2 and the sealing member 3 are located in the pressure chamber 51. The valve body 7 has a water inlet space 71 and a water outlet space 72. A valve port 73 is located between the water inlet space 71 and the water outlet space 72. The sheet 6 can be sealed to the valve port 73 or release the seal to the valve port 73. Although the pressure relief hole 66 is disposed in the middle of the diaphragm 6 in the above embodiment, it should be understood by those skilled in the art that the pressure relief hole 66 may also be located at a position other than the center of the diaphragm 6, as long as the pressure relief hole 66 can The pressure chamber 51 and the water outlet space 72 may be connected, and the specific position of the pressure relief hole 66 is not limited, but only the corresponding fitting arrangement of the sealing member 3 is required.

As shown in FIG. 5, the sealing member 3 is further provided with a through hole 31 through which the cavity 32 communicates with the pressure chamber 51. The cavity 32 has a drum shape, and the side faces of the transmission shaft 2 and the diaphragm 6 are plane, and the other sides of the cavity 32 constitute a drum surface 33. The through hole 31 horizontally penetrates the cavity 32 at the drum surface 33. The sealing member 3 has a bag shape as a whole and has a side opening 34. The opening 3 of the sealing member 3 is fastened and fixed to the outside of the convex ring 23 of the second end 22 of the transmission shaft 2. Although the through hole 31 is provided in the sealing member 3 in this example, it is not limited thereto. For example, in the case where the second end 22 of the transmission shaft 2 and the sealing member 3 together form the cavity 32, the through hole 31 may be further provided. At the second end 22 of the transmission shaft 2, the through hole 31 is only required to communicate the cavity 32 with the pressure chamber 51, and the specific form and position are not limited. It should be understood that the shape of the cavity 32 may alternatively be in the shape of a cone, an anchor, a cylinder or a gourd.

According to an embodiment of the present invention, a reset member 4 is further included, which is connected to the transmission shaft 2. When the water is shut down, the transmission shaft 2 compresses the reset member 4 in the axial direction; when the water is opened, the reset member 4 is directed to the transmission shaft 2 Provides axial restoring force. The reset member 4 is selected to be in the shape of a hat. One end of the reset member 4 is passed through one end of the drive shaft 2. The end of the reset member 4 is fixedly connected to the end of the drive shaft 2. The material of the reset member 4 is selected as an elastic material. It should be understood that the shape of the reset member 4 may also be selected to be in the shape of a wave or a cylinder, and of course, the reset member 4 may also be a spring-like reset member.

In the embodiment of the present invention, the reset member 4 or the sealing member 3 may be made of a material having elastic deformation capability, and may be a material such as a silicone rubber, a rubber, a plastic, a metal, a metal, and a plastic composite. In this embodiment, a silica gel material is preferred. The sealing member 3 is designed as a balloon having a cavity 32 and a side opening hole 31. The minimum resilience of the sealing member 3 is sufficient to restore the initial state from the deformation, that is, the shape can be restored without external force, and the sealing is performed. The maximum resilience of the piece 3 is smaller than the sealing force of the diaphragm 6 to seal the valve port 73. The elastic force value of the sealing member 3 can be set in this interval, so that the reset of the sealing member 3 can be ensured, and the valve port 73 can be deformed when the valve port 73 is sealed. The effective sealing, at the same time, buffers the axial idle stroke when the state of the driven portion 1 is switched, thereby weakening the significant influence of the feedback to the user's operating force, and the sealing of the pressure relief port can be maintained during this process. The inner cavity 32 can absorb the impact force of the axial idle stroke stage on the operating force, and the side hole can reach the water pressure balance inside and outside the capsule, so that the switch device can withstand high pressure without leaking water.

According to an embodiment of the present invention, the driven portion 1 includes a switching holding mechanism, and the switching holding mechanism presses the first end 21 of the transmission shaft 2 at one end, and the switching holding mechanism is switched between the first position and the second position, the first The position-corresponding diaphragm 6 is sealed to the valve port 73, and the second position corresponds to the state in which the diaphragm 6 is released from sealing the valve port 73. The switching holding mechanism may be selected to be a mechanism for switching and maintaining by a ratchet fitting structure or a heart-shaped cam fitting structure. The two retaining structure principles are the same as those of a conventional pressing ballpoint pen. Of course, those skilled in the art should understand. Yes, if other switching holding structures can achieve the above operation switching maintaining function, it should also belong to the inventive concept.

In a specific example, as shown in the drawing, wherein the switching holding mechanism includes a ratchet seat 11, a ratchet shaft 12, and a ratchet lever 13. The ratchet shaft 12 is assembled with the ratchet rod 13 , and the ratchet shaft 12 and the ratchet rod 13 are sleeved and assembled in the ratchet seat 11 . One end of the ratchet shaft 12 passes through the opening of the ratchet seat 11 , and the outer end of the ratchet rod 13 and the end of the transmission shaft 2 . Abutting; the inner side surface of the ratchet seat 11 and the ratchet shaft 12 and the outer side surface of the ratchet rod 13 are engaged by the ratchet structure, and the ratchet shaft 12 and the ratchet rod 13 abutment surface are also engaged by the ratchet structure. How to maintain the drive shaft 2 in the low position of the water shutoff mode or the high position of the water shut mode, the two positions can be switched by pressing the ratchet shaft 12.

As shown in the figure, the fixed connection of the ratchet seat 11 and the valve body 7 forms an assembly space between the two, and the connection between the two can be selected by means of snapping, screwing or riveting. Connections secure the components of the switch spool between the two. In the example in the figure, the ratchet seat 11 and the valve body 7 are assembled and connected by a snap-fit structure, thereby increasing the assembly speed.

According to an embodiment of the invention, the pressure chamber 51 of the switching valve core is realized by a pressure cap 5, a pressure chamber 51 is formed in the pressure cap 5, the pressure cap 5 is butted against the valve body 7, and the diaphragm 6 is fixed to the pressure cap 5. Between the inner space of the valve body 7 and the second end 22 of the drive shaft 2 penetrates the pressure cap 5 through an operating hole 52, and the sealing member 3 moves in the pressure cap 5. The pressure cap 5 faces the diaphragm 6 and is also provided with a snap ring 55 to define the stroke space of the diaphragm 6, while at the same time defining the axial movement of the seal 3 and the drive shaft 2 on the inner side. There is also a spring 56 located in the pressure chamber 51. One end of the spring 56 abuts against the inner wall of the pressure chamber 51, and the other end abuts against the diaphragm 6. The spring 56 is integrally formed with a function pin 57, and the function pin 57 corresponds to the diaphragm 6. The water inlet hole 67 cleans the flow rate of the water inlet hole 67 through the function pin 57 to prevent clogging of the dirt.

According to an embodiment of the present invention, a pressure plate 45 is further disposed between the restoring member 4 and the pressure cap 5. The sealing plate 54 and the pressure cap 5 further have a sealing ring 54 corresponding to the sealing ring 54. There is a sealing groove 53, the sealing ring 54 seals the matching gap between the driving shaft 2 and the pressure cap 5, and the pressing plate 45 blocks the fixing sealing ring 54.

According to an embodiment of the present invention, the diaphragm 6 includes a skeleton 63 and an elastic piece 64. The skeleton 63 is assembled with the elastic piece 64. The skeleton 63 is located on one side of the second surface, and the elastic piece 64 is located on one side of the first surface; 63 forms a pressure relief hole 66 and a water inlet hole 67. Wherein the skeleton 63 has a conical projection 65 surrounding the pressure relief hole 66, the conical projection 65 projects toward the pressure chamber 51, and the sealing member 3 can press against the sealing pressure relief hole 66 at the top of the conical projection 65.

FIG. 8 is a schematic structural diagram of a water discharge device in a water shutoff mode according to an exemplary embodiment. FIG. 9 is a schematic structural view of a water discharge device in a boiling water mode according to an exemplary embodiment. As shown in FIG. 8, when the water needs to be shut off, the ratchet shaft 12 is caused to move the ratchet rod 13 to the lowest position of the ratchet seat 11 by pressing the upper portion of the driven portion 1 (ballpoint pen structure), so that the intermediate transmission shaft 2 is lowered. The movement is continued until the seal 3 on the drive shaft 2 seals the pressure relief hole 66. At this time, the water flows into the pressure chamber 51 through the water inlet hole 67 in the diaphragm 6, and rapidly fills the pressure chamber 51. The pressure chamber 51 forms a relatively closed state with the outside under the sealing action of the Y-ring 54 and the diaphragm 6. The pressure in the pressure chamber 51, that is, the pressure acting on the upper surface of the diaphragm 6, is equal to that outside the pressure chamber 51. The pressure acts on the lower surface of the diaphragm 6. Next, under the joint action of the driven portion 1 to continue to push the return force of the transmission shaft 2 and the spring 56 and the recovery characteristic of the diaphragm 6, the diaphragm 6 is moved downward, that is, in the direction of the valve port, so that the diaphragm 6 moves downward. The force does not come from or is entirely driven by the drive shaft 2, and when fed back to the driven portion 1 that urges the transmission shaft 2, the force for driving the driven portion 1 is small, continuous, stable, and has no sudden change, and is improved. User's feel. When the diaphragm 6 reaches the valve port 73, since the water pressure area of the diaphragm 6 in the pressure chamber 51 is larger than the water pressure area of the diaphragm 6 facing the valve port 73, the diaphragm is sealed under the pressure difference. Stop the valve port 73.

As shown in FIG. 9, when the water passage needs to be opened, the ratchet shaft 12 is driven by the ratchet shaft 13 by pressing the ballpoint pen structure of the upper end of the driven portion 1, and is moved to the highest position on the ratchet seat 11, and is elastically deformable at this time. The resetting member 4 restores the initial shape and drives the transmission shaft 2 upward to move away from the diaphragm 6, opening the originally sealed pressure relief hole 66. At this time, the pressure chamber 51 instantaneously communicates with the outside through the pressure relief hole 66, and the water in the pressure chamber 51 is discharged from the pressure relief hole 66 to achieve pressure relief, and the pressure of the pressure chamber 51 is reduced, and is reduced to less than the pressure chamber. When the pressure outside the chamber 51 is, for example, the pressure of the water inlet space 71, at this time, the pressure acting on the upper surface of the diaphragm 6 is less than the pressure acting on the lower surface of the diaphragm 6, that is, the diaphragm 6 is subjected to an upward force, thereby The diaphragm 6 is ejected from the sealing surface, and water flows out from the water discharge space 72.

As described above, the switching valve core of the embodiment of the present invention adopts an intermittent motion maintaining mechanism similar to a ballpoint pen, and uses the water passing principle of the pilot valve to realize the opening and closing of the waterway. The valve core structure is subjected to water pressure fluctuation to the pressing force value. The impact is minimal and is a more reliable structure.

An embodiment of the present invention further provides a water discharge device having the on-off valve core of any of the preceding embodiments. FIG. 8 is a schematic structural diagram of a water discharge device in a water shutoff mode according to an exemplary embodiment. FIG. 9 is a schematic structural view of a water discharge device in a boiling water mode according to an exemplary embodiment. FIG. 10 is a schematic structural view of a water outlet device applied to a kitchen faucet according to an exemplary embodiment. 11 is a schematic exploded view of a water outlet device applied to a kitchen faucet according to an exemplary embodiment.

As shown in the figure, the water outlet device main body 8 is provided with a switch valve core, and the water discharge device main body 8 mainly has a water inlet 81, a water outlet 82 and a valve plug mounting seat 83 (see FIG. 11), and the valve core mounting seat 83 is located at the water inlet 81 and Between the water outlets 82. The switching valve core is installed in the valve plug mounting seat 83, the water inlet space 71 of the switching valve core is connected to the water inlet 81, and the water outlet space 72 of the switching valve core is connected to the water outlet 82. 6 and 7, the valve body 7 is provided with two seals 75 on both sides of the outlet portion of the water outlet space 72 to prevent water from leaking outward therefrom.

A lock ring 85 is fixedly assembled to the outside of the spool mount 83, and the lock ring 85 is pressed against the fixed switch spool from the outside. There is also a button 86 corresponding to the driven portion 1 of the switching valve core, and an elastic return member 87 is provided between the button 86 and the switching valve core.

In the specific example of the figure, the valve plug mount 83 has a mounting operation port 84, and the mounting operation port 84 is coaxial with the water inlet 81; the water outlet 82 faces one side with respect to the mounting operation port 84 and the water inlet 81.

FIG. 12 is a schematic diagram of the operation of the water outlet device applied to the kitchen faucet according to an exemplary embodiment. FIG. 13 is a schematic diagram of the operation of the water outlet device applied to the extractable kitchen faucet according to an exemplary embodiment. The kitchen faucet forming the front end pushable switch has a function of controlling the water switch on the main body of the faucet body, and a water stop device for pressing the switch is arranged at the water outlet of the front end of the support pipe. For the fixed kitchen faucet: a push-type water stop is provided at the water outlet of the front end of the support pipe; and for the removable kitchen faucet: a push-type water stop device is arranged at the front end of the shower. That is to say, an auxiliary switch function is added at the front end of the faucet. When the hands are holding the pot or stained with stains, the elbow or the back of the hand can be used at this time, and the water path can be turned on and off with a slight push forward, which is very convenient.

FIG. 14 is a schematic structural diagram of still another switching valve core according to an exemplary embodiment, and FIG. 15 is a structural schematic diagram of still another switching valve core in a water shutoff mode according to an exemplary embodiment. As shown in the figure, in the embodiment, a transmission mechanism may be disposed between the driven portion 1 and the transmission shaft 2. Referring to a specific example given in the drawings, the difference from the previous embodiment shown in FIG. 4 is that the ratchet rod 13 extends in the direction of the propeller shaft 2 to form a guide cylinder 15 having an outer flange so that A magnet 14 is fixed on the outside of the guide tube 15. Of course, the structure of the ratchet rod 13 for fixing the magnet 14 is not limited thereto. Those skilled in the art can select more types of structures according to requirements, and not limited thereto, mainly facing The magnet 14 may be fixed in the direction of the drive shaft 2. The drive shaft 2 is made of a ferromagnetic material such as iron, cobalt, nickel or ferrite which can be magnetized. The transmission shaft 2 can be attracted by the magnet 14, so that the transmission shaft 2 can be axially moved by the ratchet rod 13 to form a transmission connection between the driven portion 1 and the transmission shaft 2.

On the other hand, a latching structure is further disposed between the ratchet shaft 12 and the ratchet lever 13, and a relatively rotatable snapping is realized between the two, and the ratchet lever 13 rotatably switches the engagement state with the ratchet seat 11, and the ratchet The axle 12 can drive the ratchet lever 13 forward or backward in the axial direction. The rest of the structure in this embodiment is the same as that shown in FIG. 4 to FIG. 13, and therefore will not be described again.

FIG. 16 is a schematic structural diagram of still another switching valve spool according to an exemplary embodiment. As shown in the figure, in this embodiment, a transmission mechanism may be further disposed between the driven portion 1 and the transmission shaft 2. Referring to a specific example given in the drawings, which differs from the previously illustrated embodiment of FIG. 4 in that, in the case where the second end 22 of the drive shaft 2 and the seal 3 together define the cavity 32, the through hole 31 The through hole 31 may be disposed at the second end 22 of the transmission shaft 2, and the through hole 31 may be connected to the cavity 32 and the pressure chamber 51. In the example in the figure, the through hole 31 includes an axial hole and a radial hole. The cavity 32 can also communicate with the pressure chamber 51 through a through hole 31 provided in the drive shaft 2 without being affected by the deformation of the seal 3.

On the other hand, a latching structure is further disposed between the ratchet shaft 12 and the ratchet lever 13, and a relatively rotatable snapping is realized between the two, and the ratchet lever 13 rotatably switches the engagement state with the ratchet seat 11, and the ratchet The axle 12 can drive the ratchet lever 13 forward or backward in the axial direction. The rest of the structure in this embodiment is the same as that shown in FIG. 4 to FIG. 13, and therefore will not be described again.

The advantages of the switch valve core provided by the embodiment of the present invention compared with the conventional technology are:

The sealing member 3 has the function of the idle stroke of the buffering operation mechanism, and the through hole 31 opened in the sealing member 3 enables the water pressure of the inner and outer capsules to be balanced, can withstand the high pressure test, is simpler in structure, and is more cost-effective.

The overall operating resistance of the spool is small and the operating life is long.

Because the drive shaft 2 is designed to be small and the airbag is also very light, there are no extra parts. Therefore, when the resetting member 4 of the transmission shaft 2 reaches the limit life, the transmission shaft 2 can still be automatically reset under the action of water pressure.

The resetting member 4 of the transmission shaft 2 can limit the movement track of the transmission shaft 2; the end fixes the transmission shaft 2, so that the movement of the transmission shaft 2 is straight up and down, reducing the left and right swing. The structure is more reliable and the friction during operation is smaller.

Of course, those skilled in the art will readily appreciate that various modifications, additions, substitutions, deletions, and other changes can be made to the specific embodiments, and the changes are Within the scope of the principles of the invention. The present invention is to be understood as being limited by the appended claims and the claims

The above is only the specific embodiment of the present disclosure, but the scope of the present disclosure is not limited thereto, and any person skilled in the art can easily think of changes or substitutions within the technical scope of the disclosure. It should be covered within the scope of protection of the present disclosure. Therefore, the scope of protection of the present disclosure should be determined by the scope of the claims.

Claims (10)

A switch valve core, comprising: a driven portion, a transmission shaft, a seal, a diaphragm, a pressure chamber and a valve body; The driven portion accepts an operation; The driven portion is drivingly connected to one end of the transmission shaft, and the driven portion can drive the transmission shaft to perform axial movement; The sealing member is connected to the other end of the transmission shaft, the sealing member is located between the transmission shaft and the diaphragm, the sealing member is made of an elastic material, and the sealing member has a cavity therein; The diaphragm has a first surface and a second surface, the diaphragm is provided with a pressure relief hole, the pressure relief hole penetrates the first surface and the second surface, and the sealing member is in the second a surface of the pressure relief hole, the sealing member can seal the pressure relief hole; the diaphragm has a water inlet hole, the water inlet hole penetrates the first surface and the second surface; The pressure chamber is located on a side of the second surface of the diaphragm, and the pressure chamber communicates with the valve body through the water inlet hole, and the end of the transmission shaft and the seal are located at the Pressure chamber The valve body has a water inlet space and a water outlet space, and a valve port is located between the water inlet space and the water outlet space, and the diaphragm can seal to the valve port or release a seal to the valve port. A switching valve cartridge according to claim 1, wherein said cavity is further connected to a through hole through which said cavity communicates with said pressure chamber to balance said cavity with said Pressure in the pressure chamber. The on-off valve spool of claim 1 wherein said cavity is in the shape of a drum, a cone, an anchor, a cylinder or a gourd. The on-off valve spool according to claim 1, further comprising a reset member coupled to said transmission shaft, said drive shaft axially compressing said reset member during water shutoff operation; The reset member provides an axial return force to the drive shaft. The on-off valve body according to claim 4, wherein the return member has a hat shape, a wave shape or a column shape, and the reset member is actuated to the drive shaft, and the reset member is made of an elastic material. A switch valve cartridge according to claim 1, wherein said actuating portion includes a switching holding mechanism that is coupled to one end of said transmission shaft, said switching holding mechanism being in a first position and The two positions are switched, the first position corresponding to the diaphragm being sealed to the valve port, and the second position corresponding to the state in which the diaphragm is released to seal the valve port. The on-off valve spool according to claim 1, wherein said driven portion is fixedly coupled to said valve body to fix said switch valve core member therebetween. The switching valve core according to any one of claims 1 to 7, wherein the sealing member has a bag shape and has one side opening, and the sealing member opening is snap-fitted to the end of the transmission shaft. Outside the convex ring. The switching valve core according to any one of claims 1 to 7, wherein a minimum resilience of the sealing member is greater than an elastic force required for a shape reset of the sealing member, and a maximum resilience of the sealing member is smaller than the diaphragm. Sealing the valve port requires an operating force. A water discharge device characterized by comprising the switching valve core according to any one of claims 1 to 9.

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