JP2006022638A - On-off valve device and faucet device equipped with the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an on-off valve device and a faucet device equipped with the on-off valve device capable of regulating flow with small operating force. <P>SOLUTION: This on-off valve device 20 has a valve seat 30b; a main valve element 34 provided with a pressure release hole and changing a cut-off state and a water discharge state; a pilot valve 40 provided movably in the moving direction of the main valve element to change the opening of the pressure release hole moved together with the main valve element; a pressure chamber for moving the main valve element to approach or separate from the valve seat when the opening of the pressure release hole is changed by the movement of the pilot valve; an operating part 22 for performing water discharge operation, cut-off operation and flow regulating operation; and pilot valve moving mechanisms 23, 24, 38 for pressing the pilot valve to the pressure release hole by cut-off operation of the operating part, separating the pilot valve from the pressure release hole by discharge operation and continuously moving the pilot valve in the moving direction of the main valve element by flow regulating operation. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an on-off valve device and a faucet device having the same, and more particularly to an on-off valve device having a flow rate adjusting function and a faucet device having the same.

  Recently, a push-type faucet device that switches between water stop and water discharge by the operation of a push button has begun to spread. Many of the on-off valve devices used in these water faucet devices have a fixed flow rate at the time of water discharge and cannot adjust the water discharge flow rate. Japanese Patent Laid-Open No. 2001-98596 discloses a water discharge device (open / close valve device) that can switch between water discharge and water stop by pushing a water discharge operation portion and adjust the flow rate by rotating a flow adjustment operation portion. Are listed.

  FIG. 27 is a cross-sectional view of the water discharge device described in Japanese Patent Laid-Open No. 2001-98596. As shown in FIG. 27, the water discharge device 100 includes a main body 102, a main valve body 104 attached to the main body 102, a pilot valve 106 that closes a pressure release hole 104 a provided in the main valve body 104, and a pilot valve A pilot valve drive mechanism 107 and a spouting water operation unit 108 that move the 106 up and down, and a sleeve 109 that presses the main valve body 104 are provided. Further, the water discharge device 100 includes a flow rate adjustment member 110 and a flow adjustment operation unit 112 for moving the flow rate adjustment member 110 up and down.

  A pressure chamber forming member 105 is disposed above the main valve body 104, and a pressure chamber is formed between the main valve body 104 and the pressure chamber forming member 105. The main valve body 104 is formed with a communication hole 104b that allows communication between the inflow side of the main body 102 and the pressure chamber. Further, when the spout water operation unit 108 is pressed, the pilot valve 106 is moved up and down by the pilot valve drive mechanism 107, and the pressure release hole 104a of the main valve body 104 is opened and closed. The flow rate adjusting member 110 is disposed so as to extend from the inside of the pressure chamber to the outside, and is configured to be moved up and down by a screw mechanism when the flow adjustment operation unit 112 is rotated.

  In the water stoppage state, the pilot valve 106 closes the pressure release hole 104a, so water flowing into the pressure chamber from the upstream side of the main body 102 through the communication hole 104b is accumulated in the pressure chamber. The main valve body 104 is pressed against the lower valve seat and water is stopped. Next, when the spout water operation unit 108 is pushed, the pilot valve 106 is pulled upward by the pilot valve drive mechanism 107, and the pressure release hole 104a is opened. When the pressure release hole 104a is opened, the pressure in the pressure chamber decreases, so that the force that presses the main valve body 104 against the valve seat does not act, and the main valve body 104 is opened and water is discharged. In the water discharge state, the main valve body 104 rises upward and stops at a position in contact with the lower end of the flow rate adjusting member 110.

  Since the flow rate adjusting member 110 is moved up and down by rotating the flow adjustment operation unit 112, when the flow rate adjusting member 110 is positioned upward, the main valve body 104 moves greatly to move the valve seat and the main seat. The interval with the valve body 104 becomes wide. On the other hand, when the flow rate adjusting member 110 is positioned downward, the flow rate adjusting member 110 is in contact with the flow rate adjusting member 110 at a position where it does not move much upward. Accordingly, the position of the main valve body 104 in the water discharge state is regulated by the position of the flow rate adjustment member 110, and the flow rate during water discharge is adjusted by the flow rate adjustment member 110.

  Japanese Patent Application Laid-Open No. 2001-95710 discloses a water discharger that can operate the water discharge or water stop from the shower head and adjust the flow rate by an operation unit provided in the shower head. FIG. 28 is a cross-sectional view of a water discharge device described in Japanese Patent Laid-Open No. 2001-95710. As shown in FIG. 28, the water discharging device 120 includes a main body 122, a piston-type main valve body 124 slidably disposed in the main body 122, a hose 126 extending from the main body 122, It has a shower head 128 attached to the tip of the hose 126 and a pressure conduit 130 extending inside the hose 126. Further, at the tip of the shower head 128, a pilot valve 132 for opening and closing the tip 130a of the pressure conduit 130, a pilot valve moving mechanism 134 for moving the pilot valve 132, and the pilot valve moving mechanism 134 are provided. And an operation unit 136 to be operated.

  The main valve body 124 is disposed in the main body 122 and defines a pressure chamber 122 b in the main body 122. The proximal end portion of the pressure conduit 130 is connected to the main valve body 124, and the pressure conduit 130 communicates with the pressure chamber 122b. The distal end portion 130a of the pressure conduit 130 is fixed inside the shower head 128, and the pilot valve 132 is seated on the fixed distal end portion 130a, whereby the distal end portion 130a of the pressure conduit 130 is closed.

  In the water discharge device 120, when the pilot valve 132 closes the distal end portion 130 a of the pressure conduit 130, water flowing from the inflow port 122 a of the main body portion 122 passes through the small hole 124 a provided in the main valve body 124. When passing through the pressure chamber 122b, the pressure inside the pressure chamber 122b increases. When the pressure inside the pressure chamber 122b rises, the main valve body 124 is pressed against the valve seat 122c provided inside the main body 122 by the pressure inside the pressure chamber 122b, so that the water stop state is achieved. Next, when the operation unit 136 is pressed, the pilot valve 132 is pulled away from the distal end portion 130 a of the pressure conduit 130 by the pilot valve moving mechanism 134. When the distal end portion 130a of the pressure conduit 130 is opened, the pressure inside the pressure chamber 122b decreases, so the main valve body 124 is pushed in the valve opening direction by the coil spring 124b disposed in the main body portion 122, and the water discharge state become.

  In addition, when the operation unit 136 is rotated in the water discharge state, the pilot valve moving mechanism 134 causes the pilot valve 132 to approach or move away from the distal end portion 130 a of the pressure conduit 130 according to the amount of rotation operation of the operation unit 136. Move to. As the distance between the tip 130a of the pressure conduit 130 and the pilot valve 132 changes, the resistance of the water flowing between them changes. Thereby, since the pressure inside the pressure chamber 122b changes, the opening degree of the main valve body 124 changes, and the water discharge flow rate from the shower head 128 also changes.

JP 2001-98596 A JP 2001-95710 A

  However, in the water discharging device described in Japanese Patent Laid-Open No. 2001-98596, the opening degree of the main valve body 104 is changed by bringing the main valve body 104 into contact with the flow rate adjusting member 110. Accordingly, when adjusting the flow rate so as to decrease the discharged water flow rate in the discharged water state, it is necessary to push the main valve body 104 pushed upward by the dynamic pressure of the discharged water against this force. is there. For this reason, in the water discharge state, in order to adjust the flow rate by pushing down the main valve body 104 by the flow rate adjusting member 110, there is a problem that a very large operating force is required.

  Moreover, in the water discharging apparatus of Unexamined-Japanese-Patent No. 2001-95710, since flow volume adjustment is performed with the opening degree of a pilot valve, it is possible to make operation force required for adjustment comparatively small. However, the adjustment of the entire range of the adjusted water discharge flow rate between the maximum water discharge flow rate and the minimum water discharge flow rate is performed by changing the opening of the pilot valve, that is, the gap between the pilot valve 132 and the tip 130a of the pressure conduit 130. Therefore, there is a problem that a very precise adjustment of the opening degree of the pilot valve is required. For this reason, in the water discharging apparatus described in Japanese Patent Application Laid-Open No. 2001-95710, there is a problem that it is difficult to finely adjust the water discharge flow rate or a very complicated pilot valve moving mechanism 134 is required.

Accordingly, an object of the present invention is to provide an on-off valve device capable of adjusting a flow rate with a small operating force and a faucet device provided with the on-off valve device.
Another object of the present invention is to provide an on-off valve device capable of performing delicate flow rate adjustment with a simple mechanism and a faucet device provided with the on-off valve device.

  In order to solve the above-described problems, the present invention is an on-off valve device capable of switching between a water stop state and a water discharge state and adjusting a water discharge flow rate, and is seated on the valve seat or the valve seat. To change the opening degree of the main valve body provided with the pressure release hole and the pressure release hole moved together with the main valve body by switching the water stop state and the water discharge state by moving away from the seat In addition, when the opening of the pressure release hole changes due to the movement of the pilot valve and the pilot valve that is movable in the moving direction of the main valve body, the internal pressure changes, and the main valve body is moved to the valve seat. A pressure chamber that moves so as to approach or leave, an operation unit for performing water discharge operation, water stop operation, and / or flow rate adjustment operation, and press the pilot valve against the pressure release hole by water stop operation of the operation unit, Pyro by water discharge operation Distancing the door valve from pressure release hole, it is characterized by having a pilot valve moving mechanism continuously moving the pilot valve in the direction of movement of the main valve body by the flow rate adjusting operation of the operation unit.

  In the present invention configured as described above, when the operation portion is operated to stop water, the pilot valve is pressed against the pressure release hole of the main valve body, and the pressure release hole is closed. When the pressure release hole is closed, the pressure in the pressure chamber rises, and the main valve body is seated on the valve seat by the force of the pressure. Further, when the operation unit is sprinkled, the pilot valve is pulled away from the pressure release hole of the main valve body, and the pressure release hole is opened. When the pressure release hole is opened, the pressure inside the pressure chamber decreases, so that the force due to the pressure for seating the main valve body on the valve seat does not act, and the main valve body is separated from the valve seat. In addition, when the operation unit is operated to adjust the flow rate in the water discharge state, the pilot valve is moved and the opening of the pressure release hole changes. When the opening of the pressure release hole increases, the pressure in the pressure chamber decreases, so the main valve element moves away from the valve seat. When the main valve body moves in this manner, the pressure release hole provided in the main valve body and moved together with the main valve body approaches the pilot valve, and the opening degree of the pressure release hole becomes small. When the opening of the pressure release hole is reduced, the pressure inside the pressure chamber increases, so that the main valve element moves in a direction approaching the valve seat. As a result of these actions, the main valve body is moved to a position close to the pilot valve that is moved by the pilot valve moving mechanism by the action of force due to the pressure in the pressure chamber. Therefore, when the pilot valve is continuously moved by the flow rate adjustment operation by the pilot valve moving mechanism, the main valve body moves so as to follow the position of the pilot valve, and between the main valve body and the valve seat. The distance changes, and the water discharge flow rate changes.

  According to the present invention configured as described above, the main valve body is moved by the force due to the pressure in the pressure chamber, so that the flow rate adjusting operation can be performed with a small operating force for moving the pilot valve. Further, according to the present invention configured as described above, the main valve body is moved so as to follow the position of the pilot valve, so that a delicate flow rate adjustment can be performed with a simple mechanism.

In the present invention, the main valve body is preferably a diaphragm type valve body.
According to the present invention configured as described above, the entire on-off valve device can be configured compactly.

In the present invention, it is preferable that the pilot valve moving mechanism is configured so that the pilot valve is pressed against or released from the pressure release hole by pressing the operation portion, and the pilot portion is rotated by rotating the operation portion. Is continuously moved in the moving direction of the main valve body.
According to the present invention configured as described above, since the discharge / water stop operation and the flow rate adjustment operation can be performed by two types of operations of a single operation unit, the operability of the on-off valve device is improved. be able to.

In the present invention, it is preferable that the pilot valve moving mechanism is configured such that the moving distance of the pilot valve when the operating portion is rotated by a predetermined angle varies depending on the position of the pilot valve.
In the present invention configured as described above, even when the distance between the main valve body and the valve seat is not proportional to the discharged water flow rate, the opening / closing valve device is configured in which the rotation angle of the operation unit and the discharged water flow rate are substantially proportional. Can do.

Moreover, in this invention, Preferably, it has a rotation resistance means for preventing the accidental rotation of an operation part further.
In this invention comprised in this way, it can prevent that an operation part rotates accidentally by the press operation of an operation part, etc., and the setting of the discharged water flow rate changes.

Further, in the present invention, preferably, in the case of further having a rotation restricting means for restricting a range in which the operation unit can be rotated, in the water discharge state, when the operation unit is operated at a position where the water discharge flow rate is minimized. Also, the pressure release hole is open.
In the present invention configured as described above, even when the operation unit is set at a position where the water discharge flow rate is minimized in the water discharge state, the operation portion is not completely closed by the pressure release hole or the pilot valve. Therefore, the main valve body is not completely seated on the valve seat. For this reason, the user of the on-off valve device can surely recognize that the on-off valve device is not in a water stop state but in a state in which the water discharge flow rate is reduced in the water discharge state.

In the present invention, it is preferable that the rotation restricting means has a minimum water discharge flow rate setting means for setting the water discharge flow rate when the operation unit is operated so that the water discharge flow rate is minimized.
In this invention comprised in this way, the discharged water flow rate when operating the operation part so that the discharged water flow rate becomes the minimum can be set correctly.

  In the present invention, it is preferable to further include a buffer spring disposed between the pilot valve and the pilot valve moving mechanism, and the pilot valve moving mechanism places the pilot valve in the water stop state or the water discharge state. The holding mechanism has a latch mechanism, and the distance between the water stop position and the water discharge position of the latch mechanism is changed by the flow rate adjusting operation of the operation section. It is constant regardless of the flow rate adjustment operation.

In the present invention configured as described above, the distance between the water stop state and the water discharge state position held by the latch mechanism is changed by the flow rate adjusting operation, so that the pilot valve abuts the main valve body. The amount of deflection of the buffer spring in the water stop state in which the buffer spring is compressed is constant regardless of the flow rate adjustment operation.
According to the present invention configured as described above, since the amount of bending of the buffer spring in the water stop state is constant regardless of the flow rate adjustment operation, there is no need to increase the size of the buffer spring in order to realize the flow rate adjustment function. Thus, the entire on-off valve device can be reduced in size.

  In the present invention, it is preferable to further include a buffer spring disposed between the pilot valve and the pilot valve moving mechanism, and the pilot valve moving mechanism places the pilot valve in the water stop state or the water discharge state. The holding mechanism has a latch mechanism, and the amount of bending of the buffer spring in the water stop state changes due to the flow adjustment operation of the operation unit, and the distance between the water stop state and the water discharge state of the latch mechanism is the operation unit It is constant regardless of the flow rate adjustment operation.

In the present invention configured as described above, the distance between the water stop position and the water discharge position held by the latch mechanism by the flow rate adjustment operation does not change, so the pilot valve abuts the main valve body. The amount of bending of the buffer spring in the water stop state where the buffer spring is compressed is large when the flow rate is adjusted to be reduced, and is small when the flow rate is not reduced.
According to the present invention configured as described above, even when the operation unit is operated so as to minimize the water discharge flow rate, the water discharge flow rate is maximized even if the water stop operation or the water discharge operation is performed. Even if a water stop operation or a water discharge operation is performed at this time, the distance at which the latch mechanism operates does not change, so that the operability of the on-off valve device can be improved.

  The faucet device of the present invention includes the on-off valve device of the present invention, a faucet body that receives the on-off valve device, and a spout section or a shower head that includes a water outlet that communicates with the faucet body. It is characterized by that.

According to the on-off valve device of the present invention and the faucet device including the same, the flow rate can be adjusted with a small operating force.
Moreover, according to the on-off valve device of the present invention and the faucet device having the same, it is possible to perform delicate flow rate adjustment with a simple mechanism.

Next, a faucet device according to an embodiment of the present invention will be described with reference to the accompanying drawings.
First, with reference to FIG. 1 thru | or FIG. 10, the water faucet device by 1st Embodiment of this invention is demonstrated. FIG. 1 is a perspective view showing the entire faucet device according to the first embodiment of the present invention, and FIG. 2 is an enlarged perspective sectional view showing a main body of the faucet device.
As shown in FIG. 1, the faucet device 1 according to the first embodiment of the present invention includes a main body 2, a shower knob 4 attached to the main body 2, a currant knob 6, and a temperature adjusting knob 8. And having. Furthermore, a shower head 10 and a currant spout 12 that is a spout part are attached to the main body 2. The faucet device 1 according to the present embodiment is configured such that when the shower knob 4 is pressed, water is discharged from the shower head 10, and when the shower knob 4 is rotated, the amount of water discharged from the shower head 10 changes. Similarly, when the curan knob 6 is pressed, water is discharged from the curan spout 12, and when the curan knob 6 is rotated, the amount of water discharged from the curan spout 12 is changed. Further, when the shower knob 4 or the currant knob 6 is pressed again in the water discharge state, the water stop state is established. Further, when the temperature adjusting knob 8 is rotated, the water discharge temperature from the shower head 10 or the currant water discharge port 12 is changed.

  As shown in FIG. 2, the main body 2 of the faucet device 1 according to the first embodiment of the present invention includes a temperature adjusting unit main body 14 and two on-off valves respectively disposed on both sides of the temperature adjusting unit main body 14. Part main body 16. In this embodiment, the temperature adjustment part main body 14 and the on-off valve part main body 16 constitute a faucet main body. Further, the temperature adjusting section main body 14 receives a temperature adjusting valve 18, and the two opening / closing valve section main bodies 16 respectively receive an opening / closing valve device 20. A water inlet 14a and a hot water inlet 14b are formed in the temperature adjustment unit main body 14, respectively. The water and hot water that flow into the temperature adjusting unit main body 14 from the water inlet 14a and the hot water inlet 14b, respectively, are mixed at a predetermined ratio by the setting of the temperature adjusting valve 18 by the temperature adjusting knob 8, and adjusted to an appropriate water temperature. It is comprised so that. The temperature adjusting valve 18 changes the mixing ratio of water and hot water by rotating the temperature adjusting knob 8 so that the temperature of the water discharged by the position of the temperature adjusting knob 8 can be set to a predetermined temperature. It is configured.

  The water adjusted to an appropriate temperature by the temperature adjusting valve 18 flows into the opening / closing valve body 16 on the shower side or the curran side through the water channel 14c or 14d that connects the temperature adjustment body 14 and each opening / closing valve body 16 to each other. Is configured to do. The water that flows into each on-off valve portion main body 16 is stopped by the on-off valve device 20 that is received by each on-off valve portion main body 16. In this state, when the shower knob 4 or the curan knob 6 is pressed, the on-off valve device 20 is in a water discharge state, and water of an appropriate temperature is discharged from the shower head 10 or the curan water discharge port 12. Further, when the shower knob 4 or the curan knob 6 is turned, the valve opening degree of the on-off valve device 20 changes, and the flow rate discharged from the shower head 10 or the curan spout 12 changes. When the shower knob 4 or the curan knob 6 is pushed again in the water discharge state, the on-off valve device 20 enters a water stop state, and water discharge from the shower head 10 or the curan water discharge port 12 is stopped.

FIG. 3 is an enlarged top view of a part of the on-off valve device 20 of the faucet device 1 according to the first embodiment of the present invention. 4 is a cross-sectional view of a portion of the on-off valve device 20 cut along the line IV-IV in FIG. 3, and FIG. 5 shows an on-off valve device 20 cut along the line V-V in FIG. It is sectional drawing of the part. 6 is a cross-sectional view of a part of the on-off valve device 20 cut along the line VI-VI in FIG.
As shown in FIGS. 3 to 5, the on-off valve device 20 is disposed on the operation unit 22, the operation force transmission member 23 screwed into the operation unit 22, and the operation force transmission member 23. A guide member 24 and a pilot valve support member 26 inserted inside the guide member 24. Further, the on-off valve device 20 is disposed on the lower side of the pilot valve support member 26, and a main valve body pressing member 28 that forms a pressure chamber, and a valve seat member disposed on the lower side of the main valve body pressing member 28. 30 and a cover 32 that surrounds the above-described members and restrains each member at a predetermined position.

  A main valve body 34 is sandwiched between the main valve body pressing member 28 and the valve seat member 30 to position the main valve body 34 at a predetermined position. Further, on the central axis of the guide member 24, a push bar 38 is attached downward. The push rod 38 is inserted into the pilot valve support member 26 disposed inside the guide member 24. A pilot valve 40 slidably supported by the pilot valve support member 26 is slidably attached to the lower end of the push rod 38, and a packing 42 is attached to the tip of the pilot valve 40. In the present embodiment, the operating force transmission member 23, the guide member 24, and the push rod 38 constitute a pilot valve moving mechanism.

The operation portion 22 has a substantially cylindrical shape with the upper end closed, and a screw portion 22a for screwing the shower knob 4 or the currant knob 6 is formed at the top. Further, an internal thread portion 22 b for screwing with the operation force transmission member 23 is formed on the inner side surface of the operation portion 22. Further, a flange is formed at the lower end of the operation portion 22 to constitute a shoulder portion 22c.
The operation force transmission member 23 has a substantially cylindrical shape, and a male screw portion 23a for screwing with the female screw portion 22b of the operation portion 22 is formed on the upper portion thereof. Moreover, the diameter of the lower part of the operating force transmission member 23 is enlarged, and the guide member 24 is received in it. Further, a step portion having a further increased diameter is provided at the lower portion of the operating force transmission member 23 to form a shoulder portion 23b. In addition, two protrusions 23 c that are received in the guide grooves 32 d of the cover 32 are formed at two locations on the outer side surface of the operating force transmission member 23.

  The guide member 24 has a substantially cylindrical shape in which four locations on the circumference are cut out. Claw portions 24a (see FIG. 4) are formed at two positions on the side surface of the guide member 24. When the guide member 24 is received in the operation force transmission member 23, the claw portion 24 a protrudes radially outward from the guide member 24 and fixes the guide member 24 in the operation force transmission member 23. To do. As a result, the guide member 24 is restrained from translation and rotation with respect to the operating force transmission member 23. Further, a groove 24b for receiving a pin member 44 (see FIG. 5) constituting the heart cam mechanism is formed on the upper end surface of the guide member. The heart cam mechanism which is a latch mechanism will be described later.

  The pilot valve support member 26 has an upper portion having a generally cross-shaped cross section, and a generally disc-shaped flange portion formed below the upper portion. The upper part of the cross-shaped section is slidably received in the guide member 24. Therefore, the pilot valve support member 26 is allowed to slide in the axial direction with respect to the guide member 24, but the rotation with respect to the guide member 24 is restricted. Further, on both side surfaces of the upper portion, a heart cam groove 26a is formed for receiving the tip of the pin member 44 bent in a gate shape. On the central axis of the pilot valve support member 26, a bore 26b penetrating the pilot valve support member 26 is formed. Further, an urging spring 46 is disposed between the collar portion of the pilot valve support member 26 and the shoulder portion 23 b of the operation force transmission member 23, and the operation force transmission member 23 is connected to the pilot valve support member 26. Is biased upward.

  The main valve body pressing member 28 has a substantially cylindrical shape whose upper end surface is closed, and a hole for receiving the lower portion of the pilot valve support member 26 is formed in the upper end surface. A packing (not shown) is disposed between the pilot valve support member 26 and the main valve body pressing member 28 to maintain water tightness in the pressure chamber. Furthermore, an annular groove 28 a for pressing the main valve body 34 is formed on the lower end surface of the main valve body pressing member 28.

  The main valve body 34 has a generally disc shape, a pressure release hole 34a is formed at the center thereof, and a diaphragm portion 34b is formed at the outer peripheral portion. The outermost peripheral portion of the diaphragm portion 34b is received in an annular groove 28a formed in the lower end surface of the main valve body pressing member 28, and water tightness between the main valve body 34 and the main valve body pressing member 28 is ensured. Has been. A hole 34c through which the cleaning pin 50 passes is formed at one place on the circumference of the main valve body 34. The cleaning pin 50 is disposed so as to penetrate the hole 34c of the main valve body 34, and prevents the hole 34c from being clogged.

  The valve seat member 30 has a double cylindrical shape connected at the lower portion, and is disposed below the main valve body pressing member 28. Four inflow ports 30 a into which water flows are formed on the side surface of the outer cylinder, and the main valve body 34 is sandwiched between the upper end portion of the outer cylinder and the lower end surface of the main valve body pressing member 28. . The upper end of the inner cylinder is formed as a valve seat 30b on which the main valve body 34 is seated. The water flowing in from the inflow port 30a once rises upward, passes between the valve seat 30b and the main valve body 34, enters the inner cylinder, and flows out from the lower end of the inner cylinder. .

  The cover 32 has a stepped cylindrical shape with an expanded lower side. An edge portion 32 a is formed at the upper end of the cover 32, and a shoulder portion 22 c outside the operation portion 22 received inside the cover 32 is engaged with the edge portion 32 a. In addition, elongated holes 32b (see FIG. 5) are formed at two locations on the side surface of the cover 32, and the claw portions 26c (see FIG. 5) projecting outward from the two locations on the side surface of the pilot valve support member 26 are received. It is like that. Further, elongated holes 32 c are formed at two locations below the cover 32. The elongated hole 32 c is configured to receive the claw portion 30 c that protrudes outward from two locations on the upper side surface of the valve seat member 30. Furthermore, guide grooves 32 d that receive the projections 23 c of the operating force transmission member 23 are formed at two locations on the inner side surface of the cover 32. When the long holes 32b and 32c receive the claw portions 26c and 30c, respectively, the pilot valve support member 26, the main valve body pressing member 28, and the valve seat member 30 are held at appropriate positions in the cover 32. As a result, the guide member 24, the operation force transmission member 23, and the operation portion 22 are also held between the cover 32 and the pilot valve support member 26 and held in place.

  The operation unit 22 is held by the cover 32 so as to be able to translate in the vertical direction and rotate around the axis. Since the projection 23c of the operating force transmission member 23 is received in the guide groove 32d of the cover 32, the vertical translation with respect to the cover 32 is allowed, and the rotation with respect to the cover 32 is restricted. The guide member 24 received in the operating force transmission member 23 is restricted from rotating with respect to the operating force transmission member 23, and the pilot valve support member 26 received in the guide member 24 is rotated with respect to the guide member 24. Therefore, the operation force transmission member 23, the guide member 24, and the pilot valve support member 26 are restricted from rotating relative to the cover 32. Therefore, when the operation unit 22 is rotated clockwise, the operation force transmission member 23 screwed into the operation unit 22 and restricted in rotation is lowered downward together with the guide member 24 received thereby, and the operation force The urging spring 46 disposed between the transmission member 23 and the pilot valve support member 26 is compressed.

  As shown in FIG. 6, a stopper 22 d protruding outward in the radial direction is formed at one place on the outer periphery of the operation unit 22. Further, on the inner periphery of the upper end portion of the cover 32, stopper abutting portions 32d and 32e projecting inward in the radial direction and abutting on the stopper 22d are formed. Thereby, the rotation of the operation unit 22 with respect to the cover 32 is performed from a position where one end of the stopper 22d contacts one stopper contact portion 32d to a position where the other end of the stopper 22d contacts the other stopper contact portion 32e. Regulated to range. In the present embodiment, the stopper 22d and the stopper contact portions 32d and 32e constitute a rotation restricting means.

  The push rod 38 has an upper end attached to the center of the guide member 24, and a lower end extending into the bore 26 b of the pilot valve support member 26. An O-ring 52 is disposed between the push rod 38 and the bore 26b to ensure water tightness inside the pressure chamber. An extended portion 38 a is formed at the lower end of the push rod 38.

  The pilot valve 40 has a generally cylindrical shape and is disposed in the bore 26 b of the pilot valve support member 26. A hollow portion 40a is formed inside the pilot valve 40, and the hollow portion 40a slidably receives the extended portion 38a at the lower end of the push rod 38. A coil spring 54 that is a buffer spring is disposed in the hollow portion 40 a and urges the push rod 38 upward against the pilot valve 40. A packing 42 is attached to the lower end of the pilot valve 40. When the pilot valve 40 is pushed down, the packing 42 contacts the main valve body 34 to close the pressure release hole 34a.

  In the present embodiment, the space surrounded by the upper surface of the main valve body 34, the inner wall surface of the main valve body pressing member 28, and the inner wall of the bore 26b of the pilot valve support member 26 acts as a pressure chamber. . Between the main valve body 34 and the main valve body pressing member 28, the outermost peripheral portion of the diaphragm portion 34 b of the main valve body 34 is fitted into the annular groove 28 a of the main valve body pressing member 28, thereby providing water tightness. It is secured. Further, the watertightness between the main valve body pressing member 28 and the pilot valve support member 26 is sealed by a packing (not shown), and the watertightness between the bore 26b of the pilot valve support member and the push rod 38 is sealed by an O-ring 52. Is secured.

  Next, the heart cam mechanism will be described with reference to FIG. The heart cam mechanism includes a heart cam groove 26 a formed on both side surfaces of the upper side portion of the pilot valve support member 26 and a pin member 44 held by the guide member 24. FIG. 7 is an enlarged view of the heart cam groove 26 a formed on both side surfaces of the upper side portion of the pilot valve support member 26. In the heart cam mechanism, the end 44a bent inside the lower end of the pin member 44 takes various positions in the heart cam groove 26a, thereby holding the operation portion 22 in a predetermined position. First, when the on-off valve device 20 is in a water stop state, the end 44a of the pin member 44 is held at the position A of the heart cam groove 26a. Next, when the operating portion 22 is pushed down to the maximum pushing position against the urging force of the urging spring 46, the pin member 44 is pushed down together with the operating portion 22, and the end 44a of the pin member 44 is formed in the heart cam groove 26a. Move to position B below. If the hand is released from the operation unit 22 in this state, the operation unit 22 is pushed up to a position where the outer shoulder portion 22c of the operation unit 22 and the edge portion 32a of the cover 32 are engaged by the biasing force of the biasing spring 46. It is done. At this time, the end 44a of the pin member 44 moves to a position C above the heart cam groove 26a, and the on-off valve device 20 enters a water discharge state. When the operating portion 22 is pushed down to the maximum pushing position against the urging force of the urging spring 46 from this water discharge state, the pin member 44 is pushed down together with the operating portion 22, and the end portion 44a of the pin member 44 has a heart cam. It moves to the position of D below the groove 26a. If the hand is released from the operating portion 22 in this state, the operating portion 22 is pushed upward by the biasing force of the biasing spring 46. At this time, the end portion 44a of the pin member 44 is moved to the A of the heart cam groove 26d. Since it is held at the position, the operation unit 22 is also held at this position and enters a water-stopping state.

  Next, with reference to FIG. 5 thru | or FIG. 10, the effect | action of the faucet device 1 by 1st Embodiment of this invention is demonstrated. FIG. 5 shows the on-off valve device 20 in the water discharge state with the maximum water discharge flow rate, and FIG. 8 shows the on-off valve device in which the operation portion 22 of the on-off valve device 20 in the state of FIG. 20 shows a cross-sectional view. FIG. 9 is a cross-sectional view of the on-off valve device 20 in which the flow rate is adjusted and the discharged water flow rate is minimized in the discharged water state. Further, FIG. 10 shows a cross-sectional view of the on-off valve device 20 in which the operation portion 22 is pushed to the maximum by pressing the operation portion 22 of the on-off valve device 20 in the state of FIG.

  First, in the water stop state shown in FIG. 8, the end portion 44a of the pin member 44 is held at the position A of the heart cam groove 26a. At this position, the operation portion 22 and the shower knob 4 attached thereto are provided. Or the knob 6 for currants is in the retracted state. Further, at this position, the packing 42 of the pilot valve 40 contacts the main valve body 34 and closes the pressure release hole 34a. In the state where the pressure release hole 34a is closed, the water flowing into the pressure chamber from the inlet 30a through the hole 34c cannot flow out, so that the pressure in the pressure chamber increases, and the main valve body 34 The on-off valve device 20 is closed by being pressed against the seat 30b.

  Next, once the shower knob 4 or the currant knob 6 is pressed and released, the end 44a of the pin member 44 moves to the position C of the heart cam groove 26a, and as shown in FIG. The part 22 also moves upward. At this time, the shower knob 4 or the currant knob 6 attached to the operation unit 22 is also in a protruding state. In this state, the pilot valve 40 is also pulled upward together with the operating portion 22 by the push rod 38, so that the packing 42 of the pilot valve 40 is pulled away from the main valve body 34, and the pressure release hole 34a is opened. In the state where the pressure release hole 34a is opened, the water flowing into the pressure chamber through the hole 34c flows out through the pressure release hole 34a, so the pressure in the pressure chamber decreases. When the pressure in the pressure chamber decreases, the force for pressing the main valve element 34 against the valve seat 30b does not act, and the main valve element 34 moves upward. When the main valve body 34 moves away from the valve seat 30b and the on-off valve device 20 opens, the water that flows in from the inlet 30a flows out downward through the valve seat 30b and is discharged from the shower head 10 or the currant spout 12. The

  In the water discharge state shown in FIG. 5, the pilot valve 40 is in the uppermost position in the pressure chamber, and the main valve body 34 that is in contact with the main valve body pressing member 28 is in the position farthest from the valve seat 30 b. is there. In this state, the water discharge flow rate from the on-off valve device 20 is maximized. Further, in the state where the water discharge flow rate shown in FIG. 5 is maximized, as shown in FIG. 6, the stopper abutting portion 32d of the cover 32 and one end of the stopper 22d of the operating portion 22 are in contact with each other. 22 cannot be rotated further with respect to the cover 32, and the pilot valve 40 cannot be lifted further upward in the pressure chamber.

When the shower knob 4 or the currant knob 6 is rotated in the water discharge state, the operation unit 22 fixed thereto is also rotated. Since the rotation of the operating force transmission member 23 is constrained by the cover 32, when the operating portion 22 is rotated, the operating force transmitting member 23 is moved upward or downward by the action of the male screw portion 23 a screwed into the operating portion 22. Thereby, the guide member 24 attached to the operating force transmission member 23 also moves, and the push rod 38 attached to the guide member 24 and the pilot valve 40 attached to the push rod 38 also move. When the shower knob 4 or the currant knob 6 is rotated to the right from the state shown in FIG. 5, the operation unit 22 is also rotated to the right, and the operation force transmission member 23, the guide member 24, the push rod 38, and the pilot valve 40 are Move down.
When the pilot valve 40 is moved downward by rotating the operating portion 22, the packing 42 of the pilot valve 40 approaches the pressure release hole 34a of the main valve body 34, so that the water flowing into the pressure chamber is pressurized. It becomes difficult to flow out through the open hole 34a. When the water in the pressure chamber becomes difficult to flow out, the pressure in the pressure chamber rises, so that the main valve element 34 is pushed downward and moved by the pressure in the pressure chamber. Further, when the pilot valve 40 is moved downward, the gap between the packing 42 of the pilot valve 40 and the pressure release hole 34a is reduced again, so that the pressure in the pressure chamber rises and the main valve body 34 is moved downward. The In this specification, the degree of size of the gap between the packing 42 of the pilot valve 40 and the pressure release hole 34a is called the opening degree of the pressure release hole 34a.

  As described above, when the pilot valve 40 is continuously moved downward by rotating the operation portion 22, the main valve body 34 maintains a minute gap between the pilot valve 40 and the packing 42. However, it is continuously moved downward. Further, when the operation unit 22 is suddenly rotated and the pilot valve 40 is suddenly moved downward, the packing 42 of the pilot valve 40 may be brought into contact with the pressure release hole 34a. In this case, the pressure in the pressure chamber also rises, whereby the main valve body 34 is moved downward, so that a gap is formed again between the packing 42 and the pressure release hole 34a. Therefore, when the operation unit 22 is rotated and the pilot valve 40 is moved downward, the main valve body 34 is not pushed downward by the pilot valve 40 but is moved downward mainly by the force of the pressure in the pressure chamber. The For this reason, the pilot valve 40 can be moved downward by a very small operating force.

  Further, when the pilot valve 40 is moved upward by rotating the operation unit 22 in the reverse direction, the gap between the packing 42 of the pilot valve 40 and the pressure release hole 34a becomes large, so The pressure drops, and the main valve body 34 is moved upward. Therefore, when the pilot valve 40 is continuously moved upward, the main valve body 34 is continuously moved upward while maintaining a minute gap between the pilot valve 40 and the packing 42 of the pilot valve 40. .

  When the operation unit 22 is rotated to the right from the state shown in FIG. 6, the stopper 22d of the operation unit 22 contacts the stopper contact portion 32e of the cover 32 and cannot be rotated further to the right. In this state, as shown in FIG. 9, the pilot valve 40 moves to the lowest position. In the state shown in FIG. 9, since the main valve body 34 is held at a position very close to the valve seat 30b, the main valve body 34 can be opened and closed even when the pressure release hole 34a of the main valve body 34 is not completely closed. The flow rate discharged from the valve device 20 is very small. In the present embodiment, since the rotation of the operating portion 22 is regulated by the stopper 22d, even when the pilot valve 40 moves to the lowest position, the main valve body 34 is not completely seated on the valve seat 30b. Absent. Therefore, in the present embodiment, about 1 liter of water is discharged per minute even when the discharged water flow rate is minimized by the rotation operation of the operation unit 22. For this reason, the user of the faucet device 1 recognizes that the on-off valve device 20 is in a water discharge state even in a state where the amount of water discharge is minimized.

  Next, when the shower knob 4 or the currant knob 6 is pressed again in the water discharge state, the end portion 44a of the pin member 44 moves to the position A of the heart cam groove 26a, and as shown in FIG. The part 22 also moves downward. At this time, the knob 4 for a shower or the knob 6 for currants will be in the retracted state. In this state, the pilot valve 40 is also pushed down together with the operating portion 22 by the push rod 38, so that the pressure release hole 34 a of the main valve body 34 is closed by the packing 42 of the pilot valve 40. In a state where the operation portion 22 is greatly lowered by the water stop operation, the packing 42 is pressed against the main valve body 34, and the coil spring 54 disposed at the tip of the push rod 38 is also compressed. Even if the valve body 34 moves downward, there is no gap between the packing 42 and the main valve body 34, and the state where the pressure release hole 34a is closed is maintained. When the pressure release hole 34a is closed, the pressure in the pressure chamber is increased, so that the main valve body 34 is pushed downward to be completely seated on the valve seat 30b, and the water is stopped. In addition, since the rotational position of the operation portion 22 does not change by the pressing operation, when the pressing knob 4 or the curling knob 6 is pressed once again to bring the on-off valve device 20 into the water discharge state, the pilot valve 40 Pulled up to the position set by flow adjustment. For this reason, water is discharged from the faucet device 1 at the previously set water discharge flow rate.

  Next, the operation of the heart cam mechanism will be described with reference to FIG. First, as shown in FIG. 8, when the on-off valve device 20 is in a water stop state, the end portion 44a of the pin member 44 is held at the position A of the heart cam groove 26a. In this state, the coil spring 54 disposed inside the pilot valve 40 is compressed by the push rod 38. Next, in a state where the operation unit 22 is pressed and the operation unit 22 is pushed in to the maximum, the end portion 44a of the pin member 44 is moved to the position B of the heart cam groove 26a. In this state, as shown in FIG. 10, the push rod 38 moves to the position where it is lowered downward, and the coil spring 54 is compressed to the maximum. At this time, the stroke of the push rod 38 that moves downward together with the operating portion 22 is absorbed by the coil spring 54, so that the pilot valve 40 is pressed against the main valve body 34 by the compression force of the coil spring 54 and transmitted to the push rod 38. The applied operating force does not act directly on the main valve element 34. In the present embodiment, since a spring having a very small spring constant is used as the coil spring 54, the force with which the pilot valve 40 is pressed against the main valve body 34 is very small.

  Next, when the force that presses the operating portion 22 is removed, the operating portion 22 is pushed upward by the biasing force of the biasing spring 46, and the end 44a of the pin member 44 is positioned at the position C of the heart cam groove 26a. Moved. In this state, as shown in FIG. 5, the push rod 38 moves to the highest position, the coil spring 54 is fully extended inside the pilot valve 40, the pilot valve 40 is separated from the main valve body 34, It becomes a water discharge state.

  When the operation unit 22 is rotated clockwise from the water discharge state shown in FIG. 5 to decrease the water discharge flow rate, the operation force transmission member 23 and the guide member 24 are moved downward. Along with this, the push rod 38 and the pilot valve 40 are also lowered, but the main valve body 34 is also moved downward while maintaining a minute gap with the packing 42 of the pilot valve 40, as shown in FIG. Further, the coil spring 54 in the pilot valve 40 is not compressed. Further, the end 44a of the pin member 44 is moved to a position C1 below the position C of the heart cam groove 26a.

  In a state where the end portion 44a of the pin member 44 is at the position C1 of the heart cam groove 26a, when the operation portion 22 is pressed to make the water stop state, the operation force transmission member 23 and the guide member 24 are further moved together with the operation portion 22. Moved down. Accordingly, the push rod 38 and the pilot valve 40 are also lowered, the packing 42 of the pilot valve 40 is pressed against the main valve body 34, and the coil spring 54 is compressed. When the operation unit 22 is further pressed and the operation unit 22 is pushed in to the maximum, the end 44a of the pin member 44 is moved to the position D of the heart cam groove 26a. In this state, similarly to the case shown in FIG. 10, the push rod 38 moves to the position where it is lowered to the lowest position, and the coil spring 54 is compressed to the maximum to absorb the stroke of the push rod 38 (however, in this state) The position of the operation unit 22 with respect to the operation force transmission member 23 is different from that in FIG. Next, when the force that presses the operating portion 22 is removed, the operating portion 22 is pushed upward by the biasing force of the biasing spring 46, and the end portion 44a of the pin member 44 is positioned at the position A of the heart cam groove 26a. It is moved and the water stops.

  In this embodiment, when the flow rate adjustment is set to the maximum water discharge amount, the stroke of the operation unit 22 at the time of the water discharge operation is the distance between the points C-A in FIG. 7, and the flow rate adjustment is set to the minimum water discharge amount. In this case, the stroke during the water discharge operation is the distance between the points C1-A. Accordingly, in the present embodiment, the stroke of the operation unit 22 and the distance at which the heart cam mechanism operates varies depending on the setting position of the flow rate adjustment. On the other hand, since the coil spring 54 is compressed from the maximum extension state shown in FIG. 5 to the maximum compression state shown in FIG. 10, the maximum deflection amount of the coil spring 54 is constant regardless of the setting of the water discharge flow rate.

According to the faucet device of the first embodiment of the present invention, at the time of flow rate adjustment, the main valve body is moved mainly by the force of water pressure, so that the flow rate can be adjusted with a small operating force.
Further, according to the faucet device of the present embodiment, the main valve body is moved in proportion to the opening degree of the pilot valve because the main valve body is moved so as to follow the position of the pilot valve when adjusting the flow rate. As compared with the flow rate adjusting mechanism, it is possible to perform delicate flow rate adjustment with a simple mechanism.
Furthermore, according to the faucet device of the present embodiment, since the compression amount of the coil spring arranged in the pilot valve is constant regardless of the setting of the water discharge flow rate, the stroke of the coil spring is required to enable the flow rate adjustment. Therefore, the on-off valve device can be downsized.

  Further, in the above-described embodiment, the diaphragm type is used as the main valve body. However, as a modification, a piston type valve body can also be used as the main valve body.

Next, a faucet device according to a second embodiment of the present invention will be described with reference to FIGS. The faucet device according to the second embodiment of the present invention differs from the first embodiment in the on-off valve device used. Accordingly, here, only the parts of the second embodiment different from the first embodiment will be described, and the same components will be denoted by the same reference numerals and description thereof will be omitted.
FIG. 11: is sectional drawing in the water discharging state of the on-off valve apparatus used for the faucet device by 2nd Embodiment of this invention. Similarly, FIG. 12 is a water stop state, FIG. 13 is a water discharge state with a reduced flow rate, and FIG. 14 is a cross-sectional view of the on-off valve device in a state where the operating portion is pushed in to the maximum.

  As shown in FIGS. 11 to 14, the on-off valve device 60 used in the faucet device according to the second embodiment of the present invention includes an operation portion 62, an operation portion 62, and a second urging spring 72. The engaging force transmitting member 64 is engaged, the guide member 24 is disposed inside the operating force transmitting member 64, and the pilot valve support member 66 is inserted inside the guide member 24. The on-off valve device 60 includes a main valve body pressing member 28 and a valve pedestal member 30 that are disposed below the pilot valve support member 66. Furthermore, the on-off valve device 60 surrounds the operating portion 62, the operating force transmission member 64, the guide member 24, and the pilot valve support member 66, and an inner cover 68 that restrains each member at a predetermined position, and the inner cover. 68, and an outer cover 70 that is disposed on the outer side of the inner cover 68 and screwed into the inner cover 68. The on-off valve device 60 includes a main valve body 34, a push rod 38, a pilot valve 40, and a packing 42. In the present embodiment, the operating force transmission member 64, the guide member 24, and the push rod 38 constitute a pilot valve moving mechanism.

A second urging spring 72 is disposed between the operation portion 62 and the operation force transmitting member 64, and these members are urged away from each other. A polygonal flange 62 a is formed at the lower part of the operation unit 62. The polygonal flange 62 a is configured to be fitted into a polygonal hole 68 a formed at the upper end of the inner cover 68, so that rotational force is transmitted from the operation unit 62 to the inner cover 68.
In the upper part of the pilot valve support member 66, a heart cam groove 66a similar to that of the first embodiment is formed. A cylindrical portion 66c is formed at the lower portion of the pilot valve support member 66, and the cylindrical portion 66c is slidably inserted into an upper hole of the main valve body pressing member 28. An O-ring 74 is disposed between the cylindrical portion 66c and the main valve body pressing member 28 to maintain the water tightness of the pressure chamber.

  The inner cover 68 has a substantially cylindrical shape, and surrounds and positions the operating force transmission member 64, the guide member 24, and the pilot valve support member 66. Further, on the outer peripheral surface of the inner cover 68, a male screw portion 68b that is screwed with a female screw formed on the inner peripheral surface of the outer cover 70 is formed.

  The outer cover 70 surrounds the inner cover 68 and the main valve body pressing member 28, and is configured to position the main valve body pressing member 28 and the valve seat member 30. A female screw portion 70 a is formed on the inner peripheral surface of the outer cover 70 and is screwed with a male screw portion 68 b on the outer peripheral surface of the inner cover 68. With this configuration, when the operation unit 62 is rotated, the inner cover 68 is also rotated. When the inner cover 68 is rotated, the inner cover 68 is moved in the vertical direction by the action of the male screw portion 68b and the female screw portion 70a of the outer cover 70. As a result, the operating force transmission member 64, the guide member 24, and the pilot valve support member 66 positioned in the inner cover 68 are also rotated together with the inner cover 68 and moved in the vertical direction. By this vertical movement, the pilot valve support member 66 slides relative to the main valve body pressing member 28. On the other hand, since the operation unit 62 is urged upward by the second urging spring 72, even if the operation force transmission member 64 moves downward due to the rotation of the inner cover 68, the operation unit 62 moves downward. Not.

Next, with reference to FIG. 11 thru | or FIG. 14, the effect | action of the faucet device by 2nd Embodiment of this invention is demonstrated.
First, in the water stop state shown in FIG. 12, the end 44a of the pin member 44 is held at the position A (see FIG. 7) of the heart cam groove 66a, and the pilot valve support member 66 is in a position lowered downward. . On the other hand, since the operation part 62 is urged upward by the second urging spring 72, the operation part 62 and the shower knob 4 or the curan knob 6 attached to the operation part 62 are in the protruding position. is there. In this position, the packing 42 of the pilot valve 40 abuts on the main valve body 34 to close the pressure release hole 34a, and the main valve body 34 is seated on the valve seat 30b.
Next, once the shower knob 4 or the currant knob 6 is pressed once and released, the operation unit 62 returns to the position projected by the second urging spring 72. On the other hand, as a result of this operation, the end portion 44a of the pin member 44 moves to the position C of the heart cam groove 66a, so that the operating force transmission member 64 also moves upward as shown in FIG. In this state, the packing 42 of the pilot valve 40 is pulled away from the main valve body 34, and the pressure in the pressure chamber is reduced to a water discharge state.

  In the water discharge state shown in FIG. 11, the inner cover 68 is in a position that is most upwardly raised with respect to the outer cover 70, so that the pilot valve 40 is in the uppermost position in the pressure chamber. Therefore, at this time, the main valve body 34 is at the position farthest from the valve seat 30b, and the water discharge flow rate from the on-off valve device 60 is maximized.

  When the shower knob 4 or the currant knob 6 is rotated and the operation section 62 is rotated in the water discharge state, the inner cover 68 and the member positioned therein are moved upward or downward. As a result, the pilot valve support member 66 and the pilot valve 40 positioned with respect to the inner cover 68 are also moved. When the shower knob 4 or the currant knob 6 is rotated clockwise from the state shown in FIG. 11, the operation portion 62 is rotated clockwise, and as shown in FIG. 13, the inner cover 68 and the operation force transmission member 64 are rotated. The pilot valve support member 66, the guide member 24, the push rod 38, and the pilot valve 40 are rotated clockwise to move downward. When the pilot valve 40 is moved downward, the main valve body 34 is also moved downward so as to follow this, and the discharged water flow rate from the on-off valve device 60 is reduced.

  At this time, the coil spring 54 disposed in the pilot valve 40 remains in a fully extended state. Further, when adjusting the flow rate, the pilot valve support member 66 in which the heart cam groove 66a is formed moves together with the guide member 24. Therefore, even if the flow rate is adjusted, the end portion 44a of the pin member 44 attached to the guide member 24 is , Stays at the position C of the heart cam groove 66a.

  Next, when the shower knob 4 or the currant knob 6 is pressed and pushed to the maximum in the water discharge state, the end portion 44a of the pin member 44 moves to the position D of the heart cam groove 66a. Next, when the force that presses the knob is removed, the operation portion 62 is pushed upward by the urging force of the urging spring 46 and the second urging spring 72, and the end portion 44 a of the pin member 44 has the heart cam groove 26 a. It is moved to the position of A and enters a water stop state. Further, since the position of the inner cover 68 relative to the outer cover is not changed by the pressing operation, when the shower knob 4 or the currant knob 6 is pressed again to bring the opening / closing valve device 60 into the water discharge state, the pilot valve 40 is It is raised to the position set by the previous flow rate adjustment. For this reason, water is discharged from the faucet device at the previously set water discharge flow rate.

  As shown in FIG. 14, the coil spring 54 disposed in the pilot valve 40 is compressed at the position where the operation portion 62 is pushed in as much as possible. FIG. 14 is a diagram illustrating a state in which the flow rate adjustment is set to the maximum water discharge flow rate and the operation unit 62 is pushed in as much as possible. On the other hand, when the flow rate is adjusted so as to reduce the discharged water flow rate, the inner cover 68 is positioned further downward. And the amount of compression of the coil spring 54 increases. Thus, in the faucet device of the present embodiment, the compression amount of the coil spring 54 varies depending on the flow rate adjustment setting. On the other hand, the distance at which the heart cam mechanism, which is a latch mechanism, operates is perpendicular to the point C-A in FIG. 7 regardless of whether the flow rate adjustment is set to the maximum water discharge flow rate or the minimum water discharge flow rate. The distance in the direction is constant.

  According to the faucet device of the second embodiment of the present invention, since the distance at which the heart cam mechanism operates is constant regardless of the setting of the water discharge flow rate, the operability of the faucet device can be improved.

  Next, a faucet device according to a third embodiment of the present invention will be described with reference to FIGS. 15 to 26. The faucet device according to the third embodiment of the present invention is different from the first embodiment mainly in the pilot valve moving mechanism of the on-off valve device. Accordingly, only the parts of the third embodiment that are different from the first embodiment will be described, and the same components will be denoted by the same reference numerals and description thereof will be omitted.

  FIG. 15 is a perspective view showing the entire faucet device according to the third embodiment of the present invention. FIG. 16 is a perspective view of the head portion of the faucet device according to the present embodiment, and FIG. 17 is a sectional view thereof. 18 is a top view of the on-off valve device incorporated in the head portion of the water faucet device, FIG. 19 is a cross-sectional view taken along line XIX-XIX in FIG. 18, and FIG. It is sectional drawing cut | disconnected along XX. 21 and 22 are exploded perspective views of the on-off valve device.

  As shown in FIG. 15, a faucet device 200 according to a third embodiment of the present invention includes a main body 201a installed on a sink or a washstand (not shown), and a neck 201b extending upward from the main body 201a. And a head portion 202 disposed at the tip of the neck portion 201b. The main body 201a is provided with a temperature adjusting unit 206 for adjusting the temperature of hot water discharged, and the head unit 202 is provided with an operation knob 204 for switching between water stop and water discharge and adjusting the discharge flow rate. It has been. The neck portion 201b is formed in a so-called gooseneck shape that extends vertically upward from the main body portion 201a and then curves and extends downward.

  Furthermore, a water supply pipe 208a for supplying tap water to the main body 201a and a hot water supply pipe 208b for supplying hot water are connected to the lower part of the main body 201a. Further, pressure regulating valves 210a and 210b and check valves 212a and 212b are respectively arranged in the middle of the water supply pipe 208a and the hot water supply pipe 208b.

  The water and hot water supplied from the water supply pipe 208 a and the hot water supply pipe 208 b are appropriately mixed in the main body 201 a according to the setting of the temperature adjustment unit 206 and discharged from the tip of the head unit 202. Yes. Further, by pressing the operation knob 204 of the head unit 202, the water stop and water discharge from the head unit 202 can be switched. Furthermore, the water discharge flow rate can be adjusted by rotating the operation knob 204.

  In addition, a flexible hose (not shown) is connected to the base end of the head portion 202, and the user can freely hold the head portion 202 by grasping the head portion 202 and pulling out the flexible hose from the neck portion 201b. It becomes possible to move. Further, by rotating the shower switching operation unit 205a at the lower end of the head unit 202, the water discharged from the head unit 202 can be switched to shower or direct current.

Next, with reference to FIG. 16 thru | or FIG. 22, the head part 202 of the faucet device 200 by this embodiment and the on-off valve apparatus incorporated in it are demonstrated.
As shown in FIGS. 16 and 17, the head portion 202 includes a head body portion 203 which is a faucet body, an on-off valve device 220 received in the head body portion 203, and an operation of the on-off valve device 220. An operation knob 204 for operating the unit, and a shower switching unit 205 that causes the hot water that has passed through the on-off valve device 220 to flow out by shower or direct current. In this embodiment, the shower switching unit 205 functions as a spout unit and a shower head.

  The head main body 203 has a form in which a cylindrical operation portion is protruded from a curved tubular portion. A flexible hose (not shown) is connected to the base end 203a of the curved tubular portion, and the hot / cold water mixture flows from the base end 203a. In addition, a shower switching unit 205 is attached to the tip 203b of the curved tubular portion. Furthermore, an open / close valve device receiving portion 203c for receiving the open / close valve device 220 is formed in a cylindrical operation portion protruding from the curved tubular portion. A main valve seat 203d, which is a valve seat for seating the main valve body 234 of the on-off valve device 220, is formed on the bottom of the on-off valve device receiving portion 203c. The hot water flowing in from the base end 203a of the head main body 203 reaches the tip 203b through the main valve body 234 and the main valve seat 203d of the on-off valve device 220 received by the on-off valve device receiving portion 203c. The shower is changed to a shower or direct current by the shower switching unit 205.

The operation knob 204 has a generally cylindrical cap shape, is attached to the operation unit 222 of the on-off valve device 220, and is configured so that the user can perform a pressing operation and a rotation operation on the operation unit 222.
The shower switching unit 205 is attached to the tip of the head main body unit 203, and is configured so that the hot water discharged can be switched to shower or direct current by rotating the ring-shaped shower switching operation unit 205a. ing. In addition, the shower switching unit 205 includes a bypass valve 205b that bypasses the on-off valve device 220 and causes hot water to flow out when the pressure on the upstream side of the on-off valve device 220 abnormally increases.

  Next, the on-off valve device 220 will be described with reference to FIGS. The on-off valve device 220 includes an operation unit 222, an operation unit pressing member 223 that surrounds the outer side of the operation unit 222, and an operation force transmission member that is disposed inside the operation unit 222 and moves in accordance with the operation of the operation unit 222. 224, an intermediate member 228 disposed inside the operation force transmission member 224, a pressure chamber forming member 226 disposed along the inner wall surface of the intermediate member 228, and disposed outside the operation portion pressing member 223. Cover 232 made.

  The on-off valve device 220 includes two rod members 238 attached to the operating force transmission member 224, a pilot valve 240 slidably engaged with these rod members 238, and a tip of the pilot valve 240. The attached packing 242 and the main valve body 234 provided with the pressure release hole 234a opened and closed by the pilot valve 240 are provided. Further, the on-off valve device 220 includes a base member 230 for fixing the main valve body 234 between the intermediate member 228 and the main valve body 234. In this embodiment, the operating force transmission member 224 and the rod member 238 constitute a pilot valve moving mechanism.

  The operation portion 222 is formed in a substantially cylindrical shape with the upper end closed, and a cross-shaped raised portion 222a and four claw portions 222b disposed between the raised portions 222a are formed on the upper end surface. . The operation portion 222 is snapped to the operation knob 204 by the claw portion 222b, and the raised portion 222a is received in a groove (not shown) formed on the back side of the operation knob 204. The relative rotation of 222 is prevented. Further, a flange portion 222c protruding outward is formed at the lower end of the operation portion 222, and stopper projections 222d are formed at two locations on the circumference of the flange portion.

  Further, the operation portion pressing member 223 has a substantially cylindrical shape and is disposed so as to surround the operation portion 222. A flange portion 223a is formed at the lower end of the operation portion pressing member 223, and two protrusions 223b are formed at the upper end. Further, an overhanging portion 223c (FIG. 20) projecting inward is formed at the upper end of the operation portion pressing member 223, and this overhanging portion 223c engages with the flange portion 222c of the operation portion 222, so that the operation portion 222 is prevented from jumping upward. Further, on the inner wall surface of the operation portion pressing member 223, stopper contact portions 223d (FIG. 20) which are elongated protrusions extending in the vertical direction are formed at two locations. The stopper abutting portion 223d engages with a stopper protrusion 222d formed on the flange portion 222c of the operating portion 222, thereby restricting the rotation of the operating portion 222 to a predetermined range. In the present embodiment, the stopper protrusion 222d and the stopper abutting portion 223d constitute rotation restricting means.

  The operating force transmission member 224 has a disk-shaped upper portion 224 a provided with a notch and four leg portions 224 b extending downward from the upper portion 224 a, and is disposed inside the operating portion 222. . The upper surface of the upper portion 224a is engaged with a cam 222f formed on the upper inner wall surface of the operation portion 222. When the operation portion 222 is rotated, the operation force transmission member 224 that slides on the cam 222f is moved up and down. Configured to be moved to. A pin member 244 bent into a gate shape is attached to the upper portion 224a. Further, two bar members 238 are attached so as to extend downward from the upper portion 224a. Further, an urging spring 246 is disposed so as to contact the lower surface of the upper portion 224a, and urges the operating force transmission member 224 and the operating portion 222 to push upward with respect to the intermediate member 228. .

  The intermediate member 228 is disposed below the operation force transmission member 224 so as to be received between the leg portions 224 b of the operation force transmission member 224. The intermediate member 228 includes a cylindrical upper portion 228a having an oval cross section, a cylindrical second step portion 228b having a spline formed on the outer periphery, and a third step portion 228c having a diameter larger than that of the second step portion 228b. Have. The upper portion 228a is slidably received between the leg portions 224b of the operating force transmission member 224, whereby the intermediate member 228 and the operating force transmission member 224 are relatively movable in the vertical direction. The relative rotation between is restricted. Further, a heart cam groove 228d constituting a part of a heart cam mechanism that is a latch mechanism is formed on both planar side surfaces of the upper portion 228a. The distal end of the pin member 244 is received in the heart cam groove 228d, and the operation force transmission member 224 moves along the heart cam groove 228d, whereby the operation force transmission member 224 is held at a predetermined height. Further, the spline formed on the second step portion 228b is engaged with the spline formed on the inner peripheral portion of the lower end of the operation portion pressing member 223, and the relative rotational position of the operation portion pressing member 223 and the intermediate member 228 is changed. It is configured to be adjustable.

  The pressure chamber forming member 226 has a cylindrical upper portion 226 a having an oval cross section and a cylindrical lower portion 226 b formed on the lower side thereof, and is disposed along the inner wall surface of the intermediate member 228. ing. Two O-rings 252 are arranged between the upper surface of the pressure chamber forming member 226 and the ceiling surface of the intermediate member 228. These O-rings 252 are arranged to ensure water tightness between the two bar members 238 and the intermediate member 228 extending from the operating force transmission member 224 through the intermediate member 228 and the pressure chamber forming member 226. Yes.

  The main valve body 234 is positioned between the lower end of the intermediate member 228 and the pressure chamber forming member 226 and the upper end of the pedestal member 230 and forms a pressure chamber between the inner wall surface of the pressure chamber forming member 226. Is configured to do. The main valve body 234 is a generally disc-shaped diaphragm type valve body, and a pressure release hole 234a is provided at the center thereof, and a diaphragm portion 234b is provided at the outer periphery. The main valve body 234 is formed with a hole 234c through which upstream water flows, and the cleaning pin 250 is inserted through the hole 234c.

  The pilot valve 240 is a generally T-shaped member, and a recess 240a for receiving the pilot valve biasing spring 254 is formed at the center thereof. Moreover, a hole is formed in the arm part 240b on both sides of the T-shape, and a bar member 238 is penetrated therein. The pilot valve biasing spring 254 has an upper end that is in contact with the ceiling surface of the pressure chamber forming member 226 and a lower end that is in contact with the bottom surface of the recess 240a. It is biased downward. By this urging force, the packing 242 at the tip of the pilot valve 240 is brought into contact with the pressure release hole 234a of the main valve body 234, and the pressure release hole 234a is closed.

  The pilot valve 240 is arranged so as to be able to slide in the vertical direction along the two rod members 238 passing therethrough. Further, an extended portion 238a having an expanded diameter is formed at the tip of the rod member 238. When the rod member 238 is pulled upward, the expanded portion 238a and the pilot valve 240 are engaged. For this reason, when the rod member 238 is lifted upward together with the operating force transmission member 224, the expansion portion 238a of the rod member 238 and the pilot valve 240 are engaged, and the pilot valve 240 is subjected to the biasing force of the pilot valve biasing spring 254. It is lifted up against it. As a result, the pressure release hole 234a of the main valve body 234 is opened.

  The cover 232 has a substantially cylindrical shape and is disposed so as to surround the periphery of the operation unit pressing member 223. A plurality of vertical grooves 232 a that are vertical grooves are formed on the outer periphery of the cover 232. Further, a male screw thread is formed on the lower outer periphery of the cover 232, and this male screw thread is screwed into a female screw thread formed on the opening / closing valve device receiving part 203c of the head main body part 203. The on-off valve device 220 is fixed to the head main body 203. On the other hand, a cylindrical leaf spring 256 is attached to the inner side surface of the operation knob 204, and this leaf spring 256 surrounds the cover 232 at a position facing the click groove 232a. Bumps 256a bent so as to protrude inward are formed at two locations on the circumference of the leaf spring 256, and these bumps 256a are received in the click grooves 232a of the cover 232, respectively. . With this configuration, when the operation knob 204 is moved in the vertical direction with respect to the cover 232, the operation knob 204 can be moved with a weak force. However, in order to rotate the operation knob 204, the leaf spring 256 is elastically deformed. Since it is necessary to overcome the click groove 232a, a certain amount of operating force is required. For this reason, when the user rotates the operation knob 204, there is a feeling of clicking, and accidental rotation of the operation knob 204 is prevented. In the present embodiment, the click groove 232a and the leaf spring 256 constitute rotation resistance means.

  A spline 232 b is formed on the inner periphery of the cover 232. Further, an annular pressing member 248 is fitted into the upper portion of the cover 232, and a spline 248 a formed on the outer periphery of the pressing member 248 is configured to engage with the spline 232 b of the cover 232. In addition, notches 248b are formed at two locations on the circumference of the pressing member 248, and the protrusions 223b on the upper end of the operating portion pressing member 223 are received in these notches 248b. . With this configuration, relative rotation between the pressing member 248, the cover 232, and the operation unit pressing member 223 is prevented.

  Next, a pilot valve moving mechanism of the on-off valve device 220 will be described with reference to FIGS. FIG. 23 is a graph showing the relationship between the distance between the main valve body 234 and the main valve seat 203d and the flow rate of hot water flowing through the on-off valve device 220. FIG. 24 is a graph showing the relationship between the rotation angle of the operation knob 204 and the position of the pilot valve 240 in the on-off valve device 220 as a solid line, and the relationship between the rotation angle and the flow rate as a broken line.

  As in the first and second embodiments, the on-off valve device 220 used in this embodiment moves the pilot valve 240 continuously up and down by the pilot valve moving mechanism, and moves the main valve body 234 to the movement. The flow rate is adjusted by making it follow. As shown in FIG. 23, the flow rate of hot water flowing out from the on-off valve device 220 is not proportional to the distance between the main valve body 234 and the main valve seat 203d. That is, in the region where the main valve body 234 and the main valve seat 203d are close to each other, the flow rate rapidly increases when they are separated from each other, and in the region where the main valve body 234 and the main valve seat 203d are separated from each other, Even if the distance changes, the flow rate does not change much. Therefore, if the pilot valve moving mechanism moves the pilot valve 240 in proportion to the rotation angle of the operation knob 204, the flow rate changes greatly with respect to the predetermined rotation angle of the operation knob 204 near the minimum flow rate, and the vicinity of the maximum flow rate. Then, the flow rate hardly changes with respect to a predetermined rotation angle. With such a configuration, it becomes difficult to finely adjust the discharge flow rate.

  Therefore, in the present embodiment, as shown by the solid line in FIG. 24, the movement of the pilot valve 240 with respect to the rotation angle of the operation knob 204 has a characteristic having a tendency opposite to the curve in FIG. The movement distance of the pilot valve 240 when the part 222 is operated at a predetermined rotation angle is configured to be different depending on the position of the pilot valve 240. Therefore, in this embodiment, the movement distance of the pilot valve 240 with respect to the predetermined rotation angle of the operation knob 204 is small near the minimum flow rate, and the movement distance with respect to the predetermined rotation angle is large near the maximum flow rate. With this configuration, as shown by the broken line in FIG. 24, the rotation angle of the operation knob 204 and the discharge flow rate become substantially proportional. Therefore, the amount of increase in the discharge flow rate with respect to the predetermined rotation angle of the operation knob 204 is substantially constant, and fine adjustment of the discharge flow rate is possible. Specifically, the curve of the cam 222f formed on the inner wall surface of the operation unit 222 is formed as shown by the solid line in FIG. That is, in the present embodiment, when the cam 222f is developed on a plane, the curve is as shown by a solid line in FIG.

  Next, the operation of the faucet device 200 according to the third embodiment of the present invention will be described with reference to FIG. 15, FIG. 17, FIG. 25, and FIG. FIG. 17 shows a case where the on-off valve device 220 used in the faucet device 200 according to the present embodiment is in a water stop state. 25 shows a case where the on-off valve device 220 is in a water discharge state and the discharge flow rate is maximized, and FIG. 26 shows a case where the discharge flow rate is reduced to some extent.

  First, in FIG. 17, in the water stop state of the on-off valve device 220, the operation unit 222 is held at the lowered position by the heart cam mechanism, and the bar member 238 interlocked with the operation unit 222 is also at the lowered position. Since the operation of the heart cam mechanism is the same as that of the first embodiment, description thereof is omitted. When the rod member 238 is lowered, the expanded portion 238 a and the arm portion 240 b of the pilot valve 240 do not engage with each other, and the packing 242 of the pilot valve 240 is pressed against the main valve body 234 by the biasing force of the pilot valve biasing spring 254. It is done. When the packing 242 is pressed against the main valve body 234 and the pressure release hole 234a of the main valve body 234 is closed, the pressure in the pressure chamber increases due to the pressure of hot water flowing through the hole 234c. The main valve body 234 is moved downward by this pressure and is seated on the main valve seat 203d. Thereby, a water stop state is maintained.

  Next, when the operation knob 204 is pressed once, the holding by the heart cam mechanism is released, and the operation force transmission member 224 and the operation unit 222 and the bar member 238 interlocked therewith are moved upward by the biasing force of the biasing spring 246. (FIG. 25). When the rod member 238 is pulled up, the extension portion 238a at the tip thereof and the arm portion 240b of the pilot valve 240 are engaged, and the pilot valve 240 is also lifted upward against the biasing force of the pilot valve biasing spring 254. When the pilot valve 240 is pulled up, the packing 242 is separated from the main valve body 234, and the pressure release hole 234a is opened. Thereby, the pressure in the pressure chamber decreases, and the main valve body 234 is separated from the main valve seat 203d.

  When the main valve body 234 is separated, the tap water supplied to the water supply pipe 208a flows into the temperature adjustment unit 206 through the pressure regulating valve 210a and the check valve 212a. On the other hand, the tap water supplied to the hot water supply pipe 208b flows into the temperature adjustment unit 206 through the pressure regulating valve 210b and the check valve 212b. The temperature adjustment unit 206 changes the cross-sectional area of the channel through which water and hot water are introduced according to the setting of the dial, thereby changing the mixing ratio of water and hot water. The water and hot water that have flowed into the temperature adjustment unit 206 are mixed at a ratio corresponding to the setting of the dial of the temperature adjustment unit 206 and adjusted to an appropriate temperature. In the faucet device 200 of the present embodiment, water and hot water flow into the temperature adjusting unit 206 through the pressure regulating valves 210a and 210b, respectively, so that the supply pressure of water and hot water is substantially equal, and water and hot water flow in. The ratio of the flow rate to be performed is proportional to the ratio of the flow path cross-sectional areas. For this reason, the temperature adjustment range that can be set by the temperature adjustment unit 206 is very wide.

  The hot water adjusted to an appropriate temperature by the temperature adjusting unit 206 reaches the head unit 202 through the neck unit 201b, and passes between the main valve seat 203d and the main valve body 234 in the head main body unit 203. Hot water that has passed between the main valve seat 203d and the main valve body 234 flows into the shower switching unit 205 and is discharged from the head unit 202 as a shower or direct current.

  When adjusting the discharge flow rate, the operation knob 204 is rotated. FIG. 25 shows a state in which the discharge flow rate of the on-off valve device 220 is maximized. When the discharge flow rate is reduced from this state, the operation knob 204 is rotated clockwise. When the operation knob 204 is rotated, the operation unit 222 fixed thereto is similarly rotated. The operating force transmission member 224 engaged with the cam 222f on the inner wall surface of the operating portion 222 can slide in the vertical direction, but its rotation is restricted. For this reason, the operating force transmission member 224 is moved downward along the cam 222f when the operating portion 222 is rotated clockwise. When the operating force transmission member 224 is moved downward, the bar member 238 attached thereto is also lowered. When the rod member 238 is lowered, the pilot valve 240 is lowered by the urging force of the pilot valve urging spring 254 while maintaining the state in which the arm portion 240b and the extended portion 238a of the rod member 238 are engaged (FIG. 26). ). Following the descending of the pilot valve 240, the main valve body 234 also descends and the discharge flow rate decreases. The action of the main valve body 234 being moved so as to follow the pilot valve 240 is the same as in the first embodiment, and thus the description thereof is omitted. Since the cam 222f is formed in the curve shown by the solid line in FIG. 24, the rotation angle of the operation knob 204 and the discharge flow rate are substantially proportional.

  When the operation knob 204 is further rotated clockwise, the stopper protrusion 222d formed on the outer periphery of the operation section 222 and the stopper abutting section 223d formed on the inner wall surface of the operation section pressing member 223 are engaged with each other. The rotation of 204 is prevented. In this embodiment, even when the operation knob 204 is rotated and the discharge flow rate is reduced to the minimum, water is discharged about 1 liter per minute. Note that the positioning of the pilot valve 240 for realizing such a small amount of water discharge requires high accuracy as is apparent from the relationship between the main valve body-main valve seat distance and the flow rate shown in FIG. .

  In the on-off valve device 220 in the present embodiment, the positioning of the pilot valve 240 at the minimum flow rate can be adjusted. That is, the intermediate member 228 and the operation portion pressing member 223 are engaged by the splines formed on them, and the rotation position of the operation portion pressing member 223 is restricted. For this reason, the position of the stopper contact portion 223d formed on the inner wall surface can be adjusted by changing the engagement position by the spline and adjusting the rotation position of the operation portion pressing member 223 with respect to the intermediate member 228. . Therefore, when the pilot valve 240 is lowered to an appropriate position, the position of the stopper abutting portion 223d is set so that the stopper abutting portion 223d abuts on the stopper projection 222d of the operation portion 222 when the on-off valve device 220 is assembled. Adjust the flow rate to set the minimum flow rate. In the present embodiment, the splines formed on the intermediate member 228 and the operation part pressing member 223 function as a minimum water discharge flow rate setting means.

  Conversely, to increase the discharge flow rate, the main knob 234 is raised by rotating the operation knob 204 counterclockwise to raise the pilot valve 240. In addition, when switching to the water stop state, the operation knob 204 is pressed again to hold the operation unit 222 in the lowered position. As a result, the pressure release hole 234a of the main valve body 234 is closed, and the main valve body 234 is seated on the main valve seat 203d and enters a water-stopped state. At this time, since the rotation position of the operation unit 222 does not change, when the on-off valve device 220 is switched to the water discharge state next time, water is discharged at the previously set flow rate. Further, since the operation knob 204 is provided with a click stop mechanism by a leaf spring 256 attached to the operation knob 204 and a click groove 232a formed in the cover 232, accidental rotation of the operation knob 204 is prevented. The Further, when the operation unit 222 is pressed, it is possible to prevent the operation unit 222 from being rotated by the action of the cam 222f engaged with the operation force transmission member 224.

According to the faucet device according to the third embodiment of the present invention, the movement distance of the pilot valve when the operation knob is rotated by a predetermined angle is configured to be different depending on the position of the pilot valve. Even when the distance between the valve seats and the water discharge flow rate are not proportional, the rotation angle of the operation unit and the water discharge flow rate can be made substantially proportional.
Further, according to the faucet device according to the present embodiment, since the rotation resistance means for preventing accidental rotation of the operation unit is provided, the operation unit rotates accidentally by pressing operation of the operation unit. Thus, it is possible to prevent the setting of the water discharge flow rate from changing.
Furthermore, according to the faucet device according to the present embodiment, since the minimum water discharge flow rate setting means for setting the water discharge flow rate when the water discharge flow rate is minimized is provided, the minimum water discharge flow rate can be set accurately. .

It is a perspective view showing the whole faucet device by a 1st embodiment of the present invention. It is a perspective sectional view expanding and showing a main part of a faucet device by a 1st embodiment of the present invention. It is the top view to which the part of the on-off valve apparatus of the faucet device by a 1st embodiment of the present invention was expanded. It is sectional drawing of the part of the on-off valve apparatus cut | disconnected along the IV-IV line of FIG. It is sectional drawing of the part of the on-off valve apparatus cut | disconnected along the VV line | wire of FIG. It is sectional drawing of the part of the on-off valve apparatus cut | disconnected along the VI-VI line of FIG. It is an enlarged view of the heart cam groove formed in the pilot valve support member used for the on-off valve device. It is sectional drawing of the on-off valve apparatus which made the water stop state by pressing the on-off valve apparatus of the state of FIG. It is sectional drawing of the on-off valve apparatus which performed flow volume adjustment in the water discharge state, and made the water discharge flow volume the minimum. It is sectional drawing of the on-off valve apparatus which pushed and operated the on-off valve apparatus of the state of FIG. 5 and pushed in the operation part to the maximum. It is sectional drawing in the water discharging state of the on-off valve apparatus used for the faucet device by 2nd Embodiment of this invention. It is sectional drawing in the water stop state of the on-off valve apparatus used for the faucet device by 2nd Embodiment of this invention. It is sectional drawing in the state which restrict | squeezed the flow volume of the on-off valve apparatus used for the faucet apparatus by 2nd Embodiment of this invention. It is sectional drawing in the state which pushed in the operation part of the on-off valve apparatus currently used for the faucet apparatus by 2nd Embodiment of this invention to the maximum. It is a perspective view showing the whole faucet device by a 3rd embodiment of the present invention. It is a perspective view of the head part of the faucet device by a 3rd embodiment of the present invention. It is sectional drawing of the head part of the faucet device by a 3rd embodiment of the present invention. It is a top view of the on-off valve device incorporated in the head part. It is sectional drawing cut | disconnected along the XIX-XIX line | wire in FIG. It is sectional drawing cut | disconnected along the XX-XX line in FIG. It is a disassembled perspective view of an on-off valve device. It is a disassembled perspective view of an on-off valve device. It is a graph which shows the relationship between the main valve body-main valve seat distance and the flow volume of hot water. It is a graph which shows the relationship between the rotation angle of an operation knob and the position of a pilot valve as a continuous line, and shows the relationship between a rotation angle and a flow volume as a broken line. It is sectional drawing which shows the state which made the on-off valve apparatus the water discharge state, and made discharge flow volume the maximum. It is sectional drawing which shows the state which made the on-off valve apparatus the water discharge state, and throttling the discharge flow rate to some extent. It is sectional drawing of the water discharging apparatus which has the conventional flow volume adjustment function. It is sectional drawing of the other water discharging apparatus which has the conventional flow volume adjustment function.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Water faucet device by 1st Embodiment of this invention 2 Main body part 4 Knob for shower 6 Knob for currant 8 Knob for temperature adjustment 10 Shower head 12 Callan spout 14 Main body for temperature adjustment part 16 On-off valve part main body 18 DESCRIPTION OF SYMBOLS 20 On-off valve apparatus 22 Operation part 23 Operation force transmission member 24 Guide member 26 Pilot valve support member 28 Main valve body pressing member 30 Valve seat member 32 Cover 34 Main valve body 38 Push rod 40 Pilot valve 42 Packing 44 Pin member 46 Energizing Spring 50 Cleaning pin 60 On-off valve device used in the faucet device according to the second embodiment of the present invention 62 Operation portion 64 Operation force transmission member 66 Pilot valve support member 68 Inner cover 70 Outer cover 200 Third embodiment of the present invention Water faucet device 201a body portion 201b neck portion 202 according to the embodiment Head portion 203 Head body portion 203a Base end 203b Tip end 203c Open / close valve device receiving portion 203d Main valve seat 204 Operation knob 205 Shower switching portion 205a Shower switching operation portion 205b Bypass valve 206 Temperature adjusting portion 208a Water supply pipe 208b Hot water supply Pipes 210a and 210b Pressure regulating valves 212a and 212b Check valve 220 Opening and closing valve device 222 Operation part 222a Raising part 222b Claw part 222c Flange part 222d Stopper projection 222f Cam 223 Control part holding member 223a Flange part 223b Projection 223c Overhang part 223d Stopper contact Portion 224 Operating force transmission member 224a Upper portion 224b Leg portion 226 Pressure chamber forming member 228 Intermediate member 228a Upper portion 228b Second step portion 228c Third step portion 228d Heart cam groove 23 0 Base member 232 Cover 232a Click groove 232b Spline 234 Main valve body 234a Pressure release hole 234b Diaphragm part 234c hole 238 Bar member 238a Expansion part 240 Pilot valve 240a Recess 240b Arm part 242 Packing 246 Energizing spring 248 Holding member 248a Spline 250 Cleaning pin 252 O-ring 254 Pilot valve biasing spring 256 Leaf spring 256a Raised portion

Claims (10)

An on-off valve device capable of switching between a water stop state and a water discharge state and adjusting a water discharge flow rate,
A valve seat,
A main valve body provided with a pressure release hole that switches between a water stop state and a water discharge state by being seated on the valve seat or moved away from the valve seat;
In order to change the opening of the pressure release hole that is moved together with the main valve body, a pilot valve that is movably provided in the moving direction of the main valve body,
When the opening of the pressure release hole changes due to the movement of the pilot valve, the pressure inside changes, and the pressure chamber moves the main valve body so as to approach or leave the valve seat;
An operation unit for performing a water discharge operation, a water stop operation, and / or a flow rate adjustment operation;
The pilot valve is pressed against the pressure release hole by water stop operation of the operation unit, the pilot valve is pulled away from the pressure release hole by water discharge operation of the operation unit, and the pilot valve is moved by adjusting the flow rate of the operation unit. A pilot valve moving mechanism for continuously moving in the moving direction of the main valve body;
And an on-off valve device.   2. The on-off valve device according to claim 1, wherein the main valve body is a diaphragm type valve body.   The pilot valve moving mechanism presses the operation part to press or release the pilot valve from the pressure release hole, and rotates the operation part to rotate the pilot valve. The on-off valve device according to claim 1 or 2, which is continuously moved in a moving direction of the main valve body.   4. The on-off valve device according to claim 3, wherein the pilot valve moving mechanism is configured such that a moving distance of the pilot valve when the operation portion is rotated by a predetermined angle varies depending on a position of the pilot valve.   Furthermore, the on-off valve apparatus of Claim 3 or 4 which has a rotation resistance means for preventing the accidental rotation of the said operation part.   Furthermore, it has a rotation restricting means for restricting the range in which the operation unit can be rotated, and the pressure release hole is provided even when the operation unit is operated at a position where the water discharge flow rate is minimized in the water discharge state. The on-off valve device according to any one of claims 3 to 5, which is open.   The on-off valve device according to claim 6, wherein the rotation restricting means has a minimum water discharge flow rate setting means for setting the water discharge flow rate when the operation unit is operated so that the water discharge flow rate is minimized.   And a buffer spring disposed between the pilot valve and the pilot valve moving mechanism, and the pilot valve moving mechanism includes a latch mechanism that holds the pilot valve at a water stop position or a water discharge position. And the distance between the water stop position and the water discharge position of the latch mechanism is changed by the flow adjustment operation of the operation section, and the amount of bending of the buffer spring in the water stop state is The on-off valve device according to any one of claims 3 to 7, which is constant regardless of a flow rate adjusting operation.   And a buffer spring disposed between the pilot valve and the pilot valve moving mechanism, and the pilot valve moving mechanism includes a latch mechanism that holds the pilot valve at a water stop position or a water discharge position. And the amount of flexure of the buffer spring in the water stop state is changed by the flow adjustment operation of the operation unit, and the distance between the water stop state position and the water discharge state position of the latch mechanism is The on-off valve device according to any one of claims 3 to 7, which is constant regardless of a flow rate adjusting operation. The on-off valve device according to any one of claims 1 to 9,
A faucet body for receiving the on-off valve device;
A spout or shower head with a spout communicating with the faucet body,
A faucet device comprising:

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