JP6645750B2 - Valve mechanism and faucet device - Google Patents

Description

  The present invention relates to a valve mechanism for opening and closing a flow path, and a faucet apparatus having such a valve mechanism.

  BACKGROUND ART Conventionally, a faucet device used in a kitchen, a washroom, a bathroom, or the like includes, as disclosed in Patent Literature 1, a purified water discharge that discharges purified water that has passed through a purifying material, and a raw water discharge that discharges raw water such as tap water as it is. There was something that could switch between and.

In this faucet device, a purified water cutoff valve is provided in the purified water flow path, a raw water cutoff valve is provided in the raw water flow path, and only one of the purified water cutoff valve and the raw water cutoff valve is opened with the operation of the push button.
Of these, the raw water shut-off valve closes the raw water flow path when the spherical valve element fits into the annular valve seat, and opens the raw water flow path when the spherical valve element is displaced from the valve seat.
In the raw water cutoff valve, the spherical valve body is always urged to the valve seat side by a coil spring or the like in order to enhance the sealing performance. Further, in order to enhance the sealing performance, the valve seat is formed of an elastic member.

In this faucet device, in order to make the device compact, switching between pure water discharge and raw water discharge was performed with a small operation amount of the push button. Along with this, the stroke of the spherical valve body at the time of shifting from the purified water discharge to the raw water discharge has also become small.
Therefore, when discharging raw water with the raw water shut-off valve being open, the spherical valve element is displaced from the opening of the valve seat, but cannot be largely displaced from the valve seat. It was pressed against a part.
In particular, since the spherical valve body comes into contact with the valve seat at almost one point, a large load is concentrated on the contact portion.
As a result, during long-term use, the valve seat may be plastically deformed and distorted, resulting in breakage or reduced sealing performance. In addition, even at the time of discharging raw water, the flow path resistance may increase due to the spherical valve element existing immediately near the opening of the valve seat, and the discharge amount may decrease.

  Further, even when the valve body is not spherical and the stroke is increased, friction may occur between the valve body and the valve seat when the valve body is moved, and the valve seat may be distorted or worn. Was.

Japanese Patent No. 5671499

  The present invention has been made to solve the above problems, and a valve mechanism capable of preventing deformation of a valve seat due to pressing or friction from a valve body, and a faucet apparatus including such a valve mechanism The task is to provide

Means for solving the above problems in the present invention are as follows.
A first invention has a valve element that is arranged in a fluid flow path and moves with the operation of an operation member, and a valve seat having an opening formed in the flow path. A valve-closed state in which the opening is closed by contacting the valve seat without a gap, and a valve-opened state in which a gap is provided between the valve body and the valve seat and stopped and held in a state in which the opening is opened. A valve mechanism having a lifter disposed on a path of the valve body when shifting from the valve closed state to the valve open state or when shifting from the valve open state to the valve closed state; In at least one state other than the state, the lifter is interposed between the valve body and the valve seat, whereby a state in which the valve body does not contact the valve seat at all is maintained. I do.

  A second invention is characterized in that, in the valve open state, the state in which the valve body does not contact the valve seat at all is maintained by interposing the lifter between the valve body and the valve seat. And

A third invention is characterized in that, in the valve open state, the valve body rests on the valve seat.
In the present specification, the term "hanging" means that the valve element is urged toward the valve seat by its own weight or an urging member, and assuming that there is no lifter, the valve element forms a part of the valve seat. It refers to a state where it is pressed.

  A fourth aspect of the invention is a faucet apparatus having a water flow path, and the valve mechanism of the first invention is provided in the water flow path.

According to the first invention, a lifter is arranged on a path of the valve body when the valve shifts from the valve closed state to the valve open state or when the valve shifts from the valve open state to the valve closed state. In at least one state among the states other than the states, the lifter is interposed between the valve body and the valve seat, whereby the state in which the valve body does not contact the valve seat at all is maintained, and the valve Plastic deformation due to the seat being pressed from the valve body or rubbing against the valve body can be prevented.
Further, in the valve open state, when the state in which the valve body does not contact the valve seat at all is maintained, by increasing the gap between the valve seat opening and the valve body, to reduce the flow path resistance, The flow rate can be increased.

  According to the second aspect, in the valve open state, the state in which the valve body does not contact the valve seat at all is maintained by interposing the lifter between the valve body and the valve seat. Accordingly, in the valve open state in which the valve body is fixed for a relatively long time, it is possible to effectively prevent plastic deformation of the valve seat and increase the flow rate.

  According to the third aspect of the present invention, in the valve opening state, since the valve body rests on the valve seat, plastic deformation of the valve seat can be effectively prevented in the valve mechanism having a relatively small stroke, and the flow rate can be reduced. Can be increased.

  According to the fourth aspect, by providing the faucet device with the valve mechanism of the first aspect, plastic deformation of the valve seat can be prevented.

It is a perspective view showing the faucet device concerning a first embodiment of the present invention. It is a horizontal sectional view showing the inside of the same faucet device. It is a disassembled perspective view which shows the flow-path switching valve of the same faucet apparatus. It is an expanded longitudinal cross-sectional view which shows the time of raw water discharge of the same flow path switching valve. It is an expanded longitudinal cross-sectional view which shows the time of the purified water discharge of the same flow path switching valve. It is an expanded sectional view which shows the raw water shut-off valve of the same flow-path switching valve, (a) has shown at the time of transition, and (c) has shown at the time of raw water discharge at the time of a clean water discharge. It is an expanded sectional view showing the raw water cutoff valve of the faucet device concerning a second embodiment, (a) at the time of pure water discharge, (b) at the time of transition, (c) at the time of raw water discharge, and (d) at the time of transition. , (E) show the switching push position.

<First embodiment>
Hereinafter, the faucet device according to the first embodiment of the present invention will be described.
As shown in FIG. 1, the faucet device 1 is installed in a kitchen or a sink in a washroom.
The faucet device 1 includes a faucet base 2, a lever handle 3, and a discharge unit 4.

In the faucet base 2, a hot water supply pipe to which hot water (not shown) is supplied and a water supply pipe to which cold water is supplied are arranged. At a point where the hot water supply pipe and the water supply pipe are connected to a downstream pipe, A hot water mixing valve is arranged.
The hot water mixing valve is interlocked with the lever handle 3 and can increase or decrease the amount of water discharged by turning the lever handle 3 up and down, and change the mixing ratio of hot water and water by turning the lever handle 3 left and right. Temperature can be adjusted.
The downstream of the hot and cold water mixing valve is connected to the discharge section 4.

  In this embodiment, the discharge section 4 is fixed to the faucet base 2, but the discharge section 4 is connected to the faucet base 2 and the discharge section 4 by a hose having a sufficient length. May be freely drawn out from the faucet base 2.

The discharge unit 4 includes a cartridge storage unit 6 in which the water purification cartridge 5 is stored, a flow path switching valve, a push button 7 as an operation member of the flow path switching valve, and a water discharge port 8.
As shown in FIG. 2, a replaceable water purification cartridge 5 is accommodated in a cartridge accommodating section 6 which constitutes a part of a water flow path inside the discharge section 4. When the water purification cartridge 5 is replaced, the cartridge housing portion 6 can be disassembled in the axial direction. A cylindrical cartridge receiver 9 is formed downstream of the cartridge housing 6.
The water purification cartridge 5 has a purifying material 10 made of activated carbon having a cylindrical shape, and the outer and inner peripheries of the purifying material are each covered with a nonwoven fabric.
An upstream cap 11 and a downstream cap 12 are attached to both ends of the purifying material 10.
The upstream side cap 11 closes one end of the purifying material 10. The downstream side cap 12 is detachably formed in the cartridge receiver 9 of the ejection part 4 and has an opening for communicating the central space 13 of the purifying material 10 with the flow path of the cartridge receiver 9.
A space through which water can pass is secured between the outer surface of the water purification cartridge 5 and the inner surface of the cartridge housing portion 6.

As a result, the water supplied to the discharge unit 4 passes through the purifying material 10 from the outside of the water purification cartridge 5 and is filtered in the faucet device 1, and flows through the flow path inside the central space 13 and the cartridge receiver 9. A purified water flow path discharged from the discharge port 8 is formed.
Further, in the faucet device 1, the water supplied to the discharge unit 4 passes through the outside of the water purification cartridge 5 without passing through the purification material 10, and flows from the discharge port 8 through the flow path outside the cartridge receiver 9. A raw water flow path to be discharged is also formed.

The flow path switching valve has a function of selectively communicating only one of the purified water flow path and the raw water flow path with the discharge port to switch between purified water discharge and raw water discharge.
Details of the flow path switching valve will be described later.

As shown in FIG. 4, the discharge port 8 includes a central straight discharge port 8a and a number of small holes, ie, shower discharge ports 8b formed around the straight discharge port 8a.
The discharge unit 4 has a water-type switching valve that selectively switches between water discharge from the straight discharge port 8a and water discharge from the shower discharge port 8b in conjunction with the turning operation of the knob 14.

As shown in FIGS. 4 and 5, the flow path switching valve is provided at a location where the purified water flow path and the raw water flow path merge.
The flow path switching valve is configured such that a purified water cutoff valve that opens and closes a purified water flow path and a raw water cutoff valve that opens and closes a raw water flow path are interlocked with the operation of the push button 7.

As shown in FIG. 4, the raw water cutoff valve is a valve mechanism for opening and closing the raw water flow path, and has a valve seat 15 and a spherical valve body 16.
As shown in FIG. 3, the valve seat 15 is an annular member having an opening at the center, is fixed to the discharge unit 4, and is arranged in the raw water flow path downstream of the cartridge housing unit 6. The valve seat 15 is formed from an elastic member.

The diameter of the opening of the valve seat 15 is preferably 4.5 to 7.5 mm.
If the diameter is less than 4.5 mm, the flow path becomes narrow, so that it becomes difficult to obtain a sufficient flow rate. Preferably, the diameter is 5.0 mm or more.
If the diameter exceeds 7.5 mm, the size of the faucet device increases. Preferably, the diameter is set to 7.0 mm or less.

The spherical valve body 16 is a ceramic sphere, and its diameter is preferably larger than the diameter of the opening of the valve seat 15.
Further, the diameter of the spherical valve body 16 is preferably set to be 1.5 times or more the diameter of the opening of the valve seat 15. By doing so, the amount by which the spherical valve element 16 falls into the opening of the valve seat 15 is reduced, so that the operating load of the push button 7 can be reduced.
In particular, when the diameter of the spherical valve element 16 is 1.8 times or more the diameter of the opening of the valve seat 15, the amount of the spherical valve element 16 falling into the opening of the valve seat 15 can be extremely reduced.
In the first embodiment, the diameter of the opening of the valve seat 15 is 6 mm, and the diameter of the spherical valve body 16 is 11 mm.

The valve body of the raw water cutoff valve is not limited to a spherical shape, and may have another shape that can close the opening of the valve seat 15.
In the case of the spherical valve element 16 as in the present embodiment, the valve element of the raw water cutoff valve preferably has a spherical shape because it rotates when moving and can greatly reduce the frictional resistance.

As the material of the spherical valve body 16, metals such as stainless steel (SUS) and brass, and resins such as polycarbonate can be used.
Resins are preferred because of their excellent corrosion resistance. Among them, polycarbonate is preferred because it has high strength and excellent dimensional stability.
The metal is preferable in that a sphere having a high degree of roundness can be formed by processing, and that the metal can be sealed by its own weight with high strength and high density. Among them, SUS is preferable in that it has excellent corrosion resistance.
In the first embodiment, a SUS spherical valve body 16 is used.

As shown in FIG. 4, the spherical valve body 16 is held by a ball holding body 17. The lower part of the ball holder 17 is largely opened so that the spherical valve element 16 can enter and exit. A coil spring 18 is arranged between the upper part of the ball holder 17 and the spherical valve element 16 and always urges the spherical valve element 16 downward.
Above the valve seat 15, a space is secured to allow the spherical valve element 16 to move in the left-right direction in FIG.
In the raw water cutoff valve, the spherical valve body 16 shifts from the opening of the valve seat 15 to the push button 7 side at the time of discharging the raw water to open the raw water flow path (FIG. 4). The raw water flow path is closed by fitting into the opening (FIG. 5).

As shown in FIG. 6, a lifter 19 is provided in the raw water shutoff valve.
The lifter 19 is arranged on a path along which the spherical valve element 16 moves when shifting from raw water discharge to purified water discharge.
The lifter 19 has a holding slope 19 a that matches the curved surface of the spherical valve element 16. When shifting from raw water discharge to purified water discharge, the spherical valve body 16 rides on the lifter 19 and is held along the holding slope 19a.
The holding slope 19a is formed at a position higher than a plane on which the lifter 19 is installed. Hereinafter, this step is referred to as a step 19b. Therefore, when the spherical valve element 16 is held on the holding slope 19a, the spherical valve element 16 is held at a position raised from the valve seat 15 by the step 19b, and a state in which the spherical valve element 16 does not contact the valve seat 15 at all is maintained. .

The step 19b is preferably set to 0.3 to 0.7 mm.
When the step 19b is less than 0.3 mm, when the spherical valve body 16 shifts from the valve-closed state to the valve-opened state, it feels like rotating at the upper end of the stepped part 19b as a base point, lifting up, and then falling onto the holding slope 19a. Becomes large. Preferably, the step 19b is set to 0.4 mm or more, and particularly preferably 0.5 mm or more.
On the other hand, when the step 19b exceeds 0.7 mm, the resistance when the spherical valve element 16 rides on the vehicle increases, and the operational feeling deteriorates. Preferably, the step 19b is set to 0.6 mm or less, and particularly preferably 0.5 mm or less.
In the first embodiment, the step 19b is set to 0.4 mm.

The step 19 does not necessarily have to be provided.
However, when the step 19b is provided, when the spherical valve element 16 is shifted from the valve-closed state to the valve-open state, the spherical valve element 16 rotates around the upper end of the step 19b. It is preferable to provide the step 19b because the distance is reduced and the feel when riding on the lifter is reduced.

The lifter 19 is preferably installed at a position where it does not contact the valve seat 15. In this way, when the lifter 19 holds the spherical valve element 16, the weight of the spherical valve element 16 is not applied to the valve seat 15 indirectly.
However, even when the lifter 19 is arranged at a position in contact with the valve seat 15, the load applied from the spherical valve element 16 can be dispersed to the bottom area of the lifter 19, so that the load applied to the valve seat 15 can be reduced. it can.
The holding slope 19a does not necessarily have to match the curved surface of the spherical valve body 16, but by making the curved surface match the curved surface of the spherical valve body 16, the spherical valve body 16 can be held firmly.

As shown in FIG. 4, the water purification shutoff valve is a valve mechanism for opening and closing the water purification flow path, and has a valve seat 20 and an annular valve element 21.
The valve seat 20 is formed in a purified water flow path downstream of the cartridge receiver 9 as a part of the discharge unit. In the valve seat 20, the inner diameter of the peripheral wall of the purified water flow path gradually decreases from upstream to downstream.
The annular valve element 21 is an O-ring made of an elastic member, and has an outer diameter larger than the minimum diameter portion of the valve seat 20.
The annular valve element 21 is fitted in a groove formed on the outer surface of the shaft member 22. The left end of the shaft member 22 in FIG. 4 is fixed to the ball holder 17 and moves in the left and right direction in FIG. At the right end in FIG. 4 of the shaft member 22, a substantially conical holding portion 22a whose diameter gradually increases is formed, and the annular valve element 21 is fitted to the holding portion 22a. The portion other than the holding portion 22a of the shaft member 22 is formed thinner than the minimum diameter portion of the valve seat 20, penetrates the opening of the valve seat 20, and is movable in the left-right direction in FIG.
In the water purification cutoff valve, the annular valve element 21 is in close contact with the valve seat 20 when discharging raw water to close the purified water flow path (FIG. 4), and the annular valve element 21 is separated from the valve seat 20 toward the cartridge receiver 9 when discharging purified water. To open the water purification channel (FIG. 5).

  The push button 7 has a pressing surface exposed to the outside of the discharge unit, and is attached to the discharge unit 4 so as to be movable in the left-right direction in FIG.

The flow path switching valve is provided with a thrust lock mechanism used for a knock ballpoint pen or the like between the push button 7 and the discharge unit 4. The push button 7 alternates between a shallow stop position and a deep stop position by a pressing operation. To stop.
As shown in FIG. 3, the thrust lock mechanism includes a first switching frame 23 having a switching rib formed on a peripheral surface thereof, and a shallow groove and a deep groove alternately arranged in a depth direction on a cylindrical inner peripheral surface. , A coil spring 25 for urging the push button 7 in a direction to separate the push button 7 from the discharge unit 4, and each time the first switch top 23 is pressed, the first switch top 23 is rotated in a circumferential direction by a predetermined angle. The second switching top 26 to be rotated is assembled.
Each time the push button 6 is pressed, the rib of the first switching top 23 alternately enters the shallow groove and the deep groove of the switching ring 24, so that the push button 6 alternately stops at the shallow stop position and the deep stop position.

The push button 6 and the ball holder 17 are fixed via a thrust lock mechanism and a push rod 27, and the ball holder 17 and the shaft member 22 are also fixed to each other.
Therefore, the push button 7, the spherical valve element 16 and the annular valve element 21 move integrally in the left-right direction in FIG.

As shown in FIG. 4, when the push button 7 is at the shallow stop position, the faucet device discharges raw water.
At this time, in the water purification cutoff valve, since the annular valve element 21 is in contact with the valve seat 20, the water purification flow path is closed.
On the other hand, in the raw water cutoff valve, since the spherical valve element 16 is shifted toward the push button 7 with respect to the opening of the valve seat 15, the raw water flow path is opened.
Therefore, the water flowing into the discharge unit 4 is discharged from the discharge port 8 through the raw water flow path without passing through the purification material 10.

At this time, as shown in FIG. 6C, the spherical valve element 16 rides on the lifter 19 and is held on the holding slope 19a. The spherical valve body 16 is held at a position raised from the valve seat 15, and a state in which the spherical valve body 16 does not contact the valve seat 15 at all is maintained.
As shown in FIG. 6C, the spherical valve body 16 is located directly above a part of the valve seat 15. Therefore, assuming that there is no lifter 19, the urging force of the coil spring 25 and the spherical valve body 16 When the spherical valve element 16 presses a part of the valve seat 15 due to its own weight, the valve seat 15 is plastically deformed and distorted, and there is a possibility that the sealing performance may be deteriorated or damaged. However, by maintaining the state in which the spherical valve element 16 does not contact the valve seat 15 at all by the lifter 19, plastic deformation of the valve seat 15 can be prevented.
Further, since the gap between the spherical valve element 16 and the opening of the valve seat 15 is widened by the lifter 19, the flow path resistance is reduced, and the amount of water discharged at the time of discharging the raw water is increased.

As shown in FIG. 5 and FIG. 6A, when the push button 7 is at the deep stop position, the faucet device 1 performs the discharge of purified water.
At this time, in the water purification cutoff valve, since the annular valve element 21 is separated from the valve seat 20 on the upstream side, the water purification flow path is opened.
On the other hand, in the raw water cutoff valve, since the spherical valve element 16 is fitted into the valve seat 15 by the urging force of the coil spring 18, the raw water flow path is closed.
Therefore, the water that has flowed into the discharge unit 4 passes through the water purification 10, passes through the purified water flow path, and is discharged from the discharge port 8.

In the faucet device 1 of the first embodiment, the provision of the lifter 19 prevents distortion and breakage of the valve seat 15 due to the spherical valve element 16 of the raw water shutoff valve pressing the valve seat 15 at the time of discharging raw water. The sealing property can be maintained.
In addition, since the state in which the spherical valve body 16 does not contact the valve seat 15 at all is maintained by the lifter 19, distortion and wear of the valve seat 15 due to friction between the spherical valve body 16 and the valve seat 15 can be prevented. .
Further, the gap between the spherical valve element 16 and the opening of the valve seat 15 is widened by the lifter 19, whereby the flow path resistance is reduced and the amount of water discharged at the time of discharging the raw water can be increased.
At the time of raw water discharge (shallow stop position) where the raw water cutoff valve is open, the spherical valve element 16 has moved only 4 mm from the position at the time of pure water discharge (deep stop position) where the raw water cutoff valve is closed. However, even in such a raw water cutoff valve, the provision of the lifter 19 can achieve the above-described effects particularly effectively.

<Second embodiment>
In the faucet apparatus 1 of the first embodiment, the lifter 19 is provided at a position where the spherical valve element 16 is located when the raw water shut-off valve is in an open state (during raw water discharge).
As shown in FIG. 7, the faucet device of the second embodiment is characterized in that another lifter 28 is further provided at a position opposite to the lifter 19 when viewed from the valve seat 15.

FIG. 7 is a schematic view. The lifter 28 also has a holding slope 28 a that matches the curved surface of the spherical valve element 16.
The holding slope 28a is formed at a position higher than a plane on which the lifter 28 is installed. For this reason, when the spherical valve element 16 is held on the holding inclined surface 28a, the spherical valve element 16 is held at a position raised from the valve seat 15, and a state in which the spherical valve element 16 does not contact the valve seat 15 at all is maintained.

The lifter 28 is also preferably installed at a position where it does not contact the valve seat 15. In this way, when the lifter 28 holds the spherical valve element 16, the weight of the spherical valve element 16 is not applied to the valve seat 15.
However, even when the lifter 28 is arranged at a position in contact with the valve seat 15, the load applied from the spherical valve body 16 can be dispersed to the bottom area of the lifter 28, so that the load applied to the valve seat 15 can be reduced. it can.
The holding slope 28a does not necessarily need to match the curved surface of the spherical valve body 16, but if the curved surface matches the curved surface of the spherical valve body 16, the spherical valve body 16 can be held firmly.

In a valve mechanism using a thrust lock mechanism like a flow path switching valve, when switching between a shallow stop position and a deep stop position, as shown in FIGS. Further, it is necessary to go through a switching push-in position further pushed deep into the cartridge receiver 9 side.
7 (e), the spherical valve element 16 is shifted from the valve seat 15 toward the cartridge receiver 9, rides on the lifter 28, and is held along the holding slope 28a.
Thus, distortion and wear of the valve seat 15 due to friction between the spherical valve body 16 and the valve seat 14 can be prevented.

<Other modifications>
In the first embodiment and the second embodiment, in the faucet apparatus, the lifters 19 and 28 are provided in the raw water shutoff valve of the flow path switching valve. However, the present invention is not limited to this. It can be applied to a valve mechanism.
Further, the present invention is not limited to the faucet device 1, but can be applied to other valve mechanisms provided in a fluid flow path.

DESCRIPTION OF SYMBOLS 1 Faucet device 4 Discharge part 7 Push button 8 Discharge port 15 Valve seat 16 Spherical valve element 17 Ball holding body 18 Coil spring 19 Lifter 19a Holding slope 23 First switching frame 24 Switching ring 25 Coil spring 26 Second switching frame 27 Push Rod 28 Lifter 28a Holding slope

Claims (7)

A valve body that is arranged in the fluid flow path and moves with the operation of the operation member;
A valve seat having an opening formed in the flow path,
The valve body is stopped and held in a valve-closed state in which the valve body is in contact with the valve seat without a gap to close the opening, and in a state in which a gap is provided between the valve body and the valve seat to open the opening. A valve mechanism having a valve open state,
When shifting from the valve-closed state to the valve-open state or when shifting from the valve-open state to the valve-closed state, a lifter is arranged on the path of the valve body,
In the valve open state, the lifter is interposed between the valve body and the valve seat, so that a state where the valve body does not contact the valve seat at all is maintained,
In the valve open state, the valve body is urged toward the valve seat by an urging member,
In the valve open state, even in a state where the valve body is urged toward the valve seat by the urging member, the valve body rides on the lifter and is held at a position raised from the valve seat, and A valve mechanism that does not contact the valve seat,
The valve body is a spherical valve body,
It further comprises a ball holding body that holds the spherical valve body and is open at the bottom,
The spherical valve body is constantly urged downward, and the spherical valve body falls down and the opening is closed, so that the valve is closed,
A valve mechanism that opens and closes when the ball holder moves in the left-right direction . A valve body that is arranged in the fluid flow path and moves with the operation of the operation member;
A valve seat having an opening formed in the flow path,
The valve body is stopped and held in a valve-closed state in which the valve body is in contact with the valve seat without a gap to close the opening, and in a state in which a gap is provided between the valve body and the valve seat to open the opening. A valve mechanism having a valve open state,
When shifting from the valve-closed state to the valve-open state or when shifting from the valve-open state to the valve-closed state, a lifter is arranged on the path of the valve body,
In the valve open state, the lifter is interposed between the valve body and the valve seat, thereby maintaining a state in which the valve body does not contact the valve seat at all,
In the valve open state, the valve body is urged toward the valve seat by an urging member,
In the valve open state, even in a state where the valve is urged toward the valve seat by the urging member, the valve body rides on the lifter and is held at a position raised from the valve seat and A valve mechanism that does not contact the valve seat,
Another lifter arranged in a position opposite to the lifter as viewed from the valve seat, a push button, and a thrust lock mechanism, further comprising:
By the pressing operation, the push button is alternately stopped at a shallow stop position and a deep stop position, and when switching between the stop position and the deep stop position, the push button passes through a switching push-in position that is deeper than the deep stop position. It is composed of
When the push button is in the switching push-in position, the further the valve body is a valve mechanism that will be held on the lifter. The valve body is a spherical valve body,
It further includes a ball holding body that holds the spherical valve body and is open at the bottom,
The spherical valve body is constantly urged downward, and the spherical valve body falls down and the opening is closed, so that the valve is closed,
3. The valve mechanism according to claim 2 , wherein the ball holding member is opened and closed by moving in the left-right direction.   The lifter has a holding slope and forms a step,
  When shifting the said spherical valve body from the said valve closed state to the said valve open state, it is comprised so that the said spherical valve body may fall on the said holding slope after rotating about the upper end of the said step. 3. The valve mechanism according to 3.   The valve mechanism according to claim 4, wherein the height of the step is 0.3 mm or more and 0.7 mm or less. The valve mechanism according to any one of claims 1 to 3, wherein the lifter is installed at a position where the lifter does not contact the valve seat. It has a water channel,
A faucet device comprising the valve mechanism according to any one of claims 1 to 6 provided in the flow path of the water.

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