JP2017067182A - On-off valve of water faucet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain an arbitrary water discharge amount with push-in operation of a button.SOLUTION: On-off valves 21, 23 include a valve mechanism configured to switch between a water discharge state and a water cutoff state with push-in operation at buttons 20, 22. Between the buttons 20, 22 and the valve mechanism, included is a holding mechanism that keeps the valve mechanism into the water discharge state by depressing the buttons 20, 22 at first, and makes the valve mechanism into the water cutoff state by depressing the buttons 20, 22 secondly.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a faucet on-off valve that can perform water discharge and water stop by operating a button.

  Patent Document 1 discloses a self-closing faucet, a self-closing on-off valve for a so-called flush valve. In the open / close valve of Patent Document 1, the auxiliary valve is opened by pushing a button, the pressure balance in the self-closing valve is changed, and water discharge is executed. Then, as the water discharge proceeds, the pressure balance gradually recovers, and the water is stopped when the water discharge reaches a predetermined amount.

JP 2011-208718 A

  In the self-closing valve of Patent Document 1, a predetermined amount of water discharge can be obtained by pushing the button once, but the amount of water discharged per time can be reduced, conversely increased, or continuous water discharge can be performed. You cannot get it.

  An object of the present invention is to provide an on-off valve for a faucet that can obtain an arbitrary amount of water discharge by a pushing operation on a button.

  In order to achieve the above object, in the present invention, in the opening / closing valve of a faucet provided with a valve mechanism that is switched so as to perform water discharge and water stop when the button is pushed in, the button and the valve A holding mechanism that holds the valve mechanism in a water discharge state when the button is pushed in between the valve mechanism and a water stop state when the button is pushed in a second time. It is provided with.

  In the above configuration, in the water discharge state where the button is pushed, the valve mechanism is held in the water discharge state, the water discharge state is continued, and water is stopped when the button is pushed again. Therefore, the length of the water discharge time can be freely determined, and an arbitrary amount of water discharge can be obtained.

  According to the water faucet of the present invention, there is an effect that an arbitrary amount of water discharge can be obtained by a simple pushing operation on the button.

The perspective view of a faucet. The cross-sectional view which shows the faucet body of the on-off valve part. Sectional drawing of the faucet body which shows an on-off valve. The exploded perspective view of an on-off valve. Sectional drawing of the on-off valve at the time of water stop. Sectional drawing of the on-off valve at the time of water discharge. Explanatory drawing which shows a holding mechanism.

DESCRIPTION OF EMBODIMENTS Embodiments embodying the present invention will be described below with reference to the drawings.
The present embodiment is embodied in a hot and cold water mixing faucet (hereinafter simply referred to as a faucet) that can discharge water, hot water, and mixed water of water and hot water (hereinafter simply referred to as water). .

  As shown in FIGS. 1 and 2, the faucet body 11 is covered with a cover 30 that forms the outer surface of the faucet, and as shown in FIG. 3, a water inlet 111 and a hot water inlet at the rear of the faucet body 11 The water side socket 12 and the hot water side socket 13 are connected to 112 respectively. The water side socket 12 and the hot water side socket 13 are connected to a pipe (not shown) extending from the water supply source and a pipe (not shown) extending from the hot water source, respectively. A shower hose (not shown) is connected to the shower spout 14 at the rear of the faucet body 11, and a shower head (not shown) is connected to the tip of the shower hose. As shown in FIG. 1, a currant water discharge pipe 17 is connected to a currant discharge port (not shown) on the lower surface of the faucet body 11. As shown in FIG. 3, a water discharge amount adjustment valve 15 is provided inside the right end of the faucet body 11, and a temperature adjustment valve 16 is provided inside the left end of the faucet body 11. 11 is adjusted by an external water discharge amount adjustment handle 18 and a temperature adjustment handle 19.

  As shown in FIG. 3, the faucet body 11 has a first wall connected between a secondary side of the temperature control valve 16 and a primary side of the water discharge amount control valve 15 by inner walls 31 and 32. A water passage 34 is formed, and a second water passage 36 connected to the secondary side of the water discharge amount regulating valve 15 is formed by the inner walls 32 and 33. Further, a third water passage 38 is formed in the faucet body 11 by an inner wall 33 and an outer wall 35, and this third water passage 38 is connected to the shower spout 14 by a partition wall 37. The shower side chamber 381 is divided into a currant side chamber 382 connected to the curant spout.

  As shown in FIGS. 2 and 3, a shower side opening / closing valve 21 having a button 20 is provided on the right side of the front portion of the faucet body 11 so as to face the shower side operation button 41 on the outside of the cover 30. The inner wall 33 penetrates the interior and is located in the second water passage 36 and the shower side chamber 381. On the left side of the front part of the faucet body 11, a curran-side opening / closing valve 23 having a button 22 is provided through the inner wall 33 so as to face the curran-side operation button 42 on the outside of the cover 30. It is located in the water channel 36 and the curran side chamber 382. As will be described later, the shower-side on-off valve 21 and the curran-side on-off valve 23 are pushed back against the first button 20, 22 so that the button 20, 22 is retracted and held in that position. When the button 22 is pushed in, the buttons 20 and 22 are returned to the projected positions. In the present embodiment, the lower side of FIGS. 2 and 3 and the left side of FIGS. 5 and 6 are the front side of the on-off valve 21.

  When the buttons 20 and 22 of the shower side on / off valve 21 and the curran side on / off valve 23 are in the forward projecting state, the shower side on / off valve 21 and the curran side on / off valve 23 are in the closed state, The water channel 36 is disconnected from the shower side chamber 381 and the currant side chamber 382, and the shower head and the currant spout pipe 17 are in a water-stopped state. When the button 20 of the shower side opening / closing valve 21 is pushed in, the shower side opening / closing valve 21 is opened, the second water passage 36 and the shower side chamber 381 are in communication with each other, and shower water is discharged from the shower head. . When the button 22 of the curran side opening / closing valve 23 is pushed in, the curran side opening / closing valve 23 is opened, the second water passage 36 and the curran side chamber 382 are in communication with each other, and water discharge from the currant water discharge pipe 17 is performed. It is. Therefore, the second water passage 36 becomes the primary side of the shower side on / off valve 21 and the curran side on / off valve 23, and the shower side chamber 381 and the currant side chamber 382 of the third water passage 38 are connected to the shower side on / off valve 21 and the curran side on / off valve 23. Become the secondary side. In the case of shower-side and currant-side water discharge, the water discharge amount is adjusted by manual operation of the water discharge amount adjustment handle 18. The temperature of the water discharge is adjusted by manual operation of the temperature adjustment handle 19.

  Next, the configuration and operation of the shower side on / off valve 21 and the currant side on / off valve 23 will be described. Since the configuration and operation of the shower side on / off valve 21 and the curran side on / off valve 23 are the same, in the following description, The configuration and operation of the shower side on-off valve 21 will be mainly described.

  As shown in FIGS. 4 to 6, the substantially cylindrical outer case 51 of the shower side opening / closing valve 21 is formed with an inner wall corresponding portion 52 corresponding to the inner wall 33 and an outer wall corresponding portion 53 corresponding to the outer wall 35. An annular seal member 54 for sealing between the inner wall 33 and the outer wall 35 is provided on the outer periphery thereof. At the rear of the outer case 51, a bottomed cylindrical housing portion 55 that projects into the second water passage 36 is formed. A secondary side opening 56 is formed between the inner wall corresponding part 52 and the outer wall corresponding part 53, and a primary side opening 57 is formed on the inner wall corresponding part 52 side of the accommodating part 55.

  An insertion member 76 is inserted and fixed inside the outer case 51 through an annular seal member 58. The insertion member 76 has a flow path 64 communicating with the secondary side opening 56. The insertion member 76 and the outer case 51 constitute a valve case. A main valve seat 59 is formed in the insertion member 76 between the secondary side opening 56 and the primary side opening 57, and the secondary side opening 56 and the flow path 64 are formed in the main valve seat 59. And the primary opening 57 is formed between the main opening 50 and the primary opening 57. A strainer 74 is fitted on the outer surface of the outer case 51, and a mesh portion 741 for filtering dust or the like is formed on the strainer 74 so as to face the secondary side opening 56 (FIG. 4). reference).

  A movable member 60 is accommodated in the accommodating portion 55 so as to be movable in the direction of the axis C of the shower side opening / closing valve 21 via a seal member 61, and a pressure chamber 63 is formed by the inside thereof and the interior of the accommodating portion 55. ing. A main valve 62 is attached to the outer periphery of the movable member 60, and the main valve 62 is opened and closed with respect to the main valve seat 59 by the movement of the movable member 60. When the main valve 62 is closed, the secondary side opening 56 and the main valve port 50 between the flow path 64 and the primary side opening 57 are blocked, and when the main valve 62 is opened, the main valve port 50 is communicated. The

  A sub valve seat 66 is attached inside the movable member 60. The sub valve seat 66 and the main valve seat 59 are made of a rubber material, and are integrally formed via a bridge portion 65 that passes through a through hole (not shown) of the movable member 60 (see FIG. 4). Inside the movable member 60, a sub valve 67 having a smaller pressure receiving area than the main valve 62 is accommodated so as to be movable relative to the sub valve seat 66. When the sub valve 67 is opened, the secondary side opening 56 and the flow path 64 are communicated with the pressure chamber 63 via the movable member 60 and the sub valve port 68 of the sub valve seat 66, and when the sub valve 67 is closed. The communication is cut off. The auxiliary valve 67 is loosely inserted into the auxiliary valve port 68 and protrudes from the auxiliary valve port 68 into the flow path 64, and the hole 71 of the protrusion 69 on the bottom wall of the accommodating portion 55. A second projecting portion 72 loosely inserted therein is integrally formed. The pressure chamber 63 is always in communication with the second water passage 36 through a gap between the inner peripheral surface of the hole 71 and the outer peripheral surface of the second projecting portion 72. The auxiliary valve 67 is urged in the valve closing direction by a coil spring 73.

  In the present embodiment, the main valve 62 and the main valve seat 59, and the sub valve 67 and the sub valve seat 66 are switched based on the pushing operation of the button 20, so that water discharge and water stop are performed. A valve mechanism is configured.

  A receiving member 81 is fixed at the axial center position of the front end side of the insertion member 76, and a support hole 82 is provided through the axial position of the receiving member 81 and the insertion member 76. A spindle 83 facing the sub valve 67 is inserted and supported in the support hole 82 so as to be movable in the axial direction. A large diameter portion 831 is formed at the end of the spindle 83 on the sub valve 67 side.

  A housing cylinder 79 is fixed to the front end portion of the outer case 51, and a flange-like stopper 80 is formed at the front end. The button 20 is accommodated in the accommodating cylinder 79 so as to be movable in and out, and a stopper 85 on the outer periphery thereof faces the stopper 80. An attachment member 86 is attached inside the button 20, and a front end portion of the spindle 83 is attached to an attachment portion 861 of the attachment member 86. A coil spring 87 is interposed between the mounting portion 861 and the receiving member 81, and the mounting member 86, the button 20, and the spindle 83 are urged forward by the coil spring 87.

  As shown in FIGS. 5 to 7, a pair of flat plate portions 78 are integrally formed at the front end portion of the insertion member 76 on the button 20 side. On the outer surfaces of both flat plate portions 78, first and second cam portions 88 and 89 of the so-called heart cam type are formed, respectively. A support portion 862 is formed at the front end of the mounting member 86, and a cam follower 90 made of a metal wire having a spring property is rotatably supported by the support portion 862 at an intermediate portion 901 thereof. A first end 902 that is one end of the cam follower 90 is engaged with the first cam portion 88, and a second end 903 that is the other end is engaged with the second cam portion 89.

  Then, as shown in FIGS. 6 and 7, the cam follower 90 is operated by the action of the cam surfaces 881 and 891 of the first cam portion 88 and the second cam portion 89 by the pushing movement of the button 20 against the urging force of the coil spring 87. The first end portion 902 and the second end portion 903 are rotated around the intermediate portion 901. Next, due to the action of the cam surface 892 of the second cam portion 89, the second end portion 903 is rotated in the opposite direction around the intermediate portion 901 and engaged with the concave portion 893 of the second cam portion 89. . By the rotation in the opposite direction, the first end portion 902 is guided to the cam surface 882 of the first cam portion 88 and is engaged with the concave portion 883. Accordingly, in this state, the button 20 is held at the pushed-in position.

  When the button 20 is further pushed in this pushed state, the first end portion 902 and the second end portion 903 of the cam follower 90 are detached from the concave portions 883 and 893 to the rear, and the cam surface 894 of the second cam portion 89 is removed. By the action, it is retracted from the position facing the recesses 883, 893. Therefore, the cam follower 90 returns to the front together with the button 20 by the biasing force of the coil spring 87.

  In this embodiment, the cam portions 88 and 89 and the cam follower 90 hold the valve mechanism in a water discharge state, which will be described later, by pressing the button 20 between the button 20 and the valve mechanism for the first time. The holding mechanism which makes the said valve mechanism a water stop state by pushing the button 20 in the 2nd time is comprised.

Next, the operation of the shower side on-off valve 21 configured as described above will be described.
In the state of FIG. 5, the button 20 is disposed at the forward protruding position and is held at that position by the engagement of the stoppers 80 and 85, and the spindle 83 is disposed at the front-side immersion position in the support hole 82. Thus, a state is shown in which the large-diameter portion 831 and the insertion member 76 are held at the immersive position. In this state, the sub valve 67 contacts the sub valve seat 66 by the biasing force of the coil spring 73 and the water pressure in the pressure chamber 63, that is, the water pressure in the second water passage 36, and the sub valve port 68 is closed. It is in the state. Similarly, the main valve 62 abuts on the main valve seat 59 due to the biasing force of the coil spring 73, the water pressure in the pressure chamber 63, and the water pressure in the second water passage 36, and the main valve port 50 is shut off. Is in a state. For this reason, between the 2nd water flow path 36 and the 3rd water flow path 38 is interrupted | blocked, and it exists in a water stop state.

  In this state, when the shower side operation button 41 is pushed by the operator and the button 20 is pushed in, the cam follower 90 is moved by the action of the first cam portion 88 and the second cam portion 89 as shown in FIG. The first cam portion 88 and the second cam portion 89 are engaged with the concave portions 883 and 893 and are held at the positions by the action of the coil spring 87.

  Further, the push-in movement of the button 20 causes the spindle 83 to project and move toward the sub valve 67 via the mounting member 86, and the large diameter portion 831 of the spindle 83 comes into contact with the first projecting portion 70 of the sub valve 67. The auxiliary valve 67 is moved to the open side away from the auxiliary valve seat 66 against the urging force of the coil spring 73. For this reason, the auxiliary valve port 68 is opened, the water in the pressure chamber 63 flows into the flow path 64 and the shower side chamber 381, and the water pressure in the pressure chamber 63 and the second water passage 36 is equal to the water pressure in the shower side chamber 381. Almost equal.

  Subsequently, the movable member 60 is pushed by the spindle 83, the main valve 62 is separated from the main valve seat 59, and the main valve port 50 is opened. Accordingly, the water in the second water passage 36 flows into the shower side chamber 381 of the third water passage 38 via the main valve port 50 and is discharged from the shower.

In this water discharge state, the sub-valve 67 and the movable member 60 are disposed at a position where they are in contact with the spindle 83.
When the button 20 is further pushed in the water discharge state in which the button 20 is held at the pushed-in position, the first and second end portions 902 and 903 of the cam follower 90 are removed from the concave portions 883 and 893 of the first and second cam portions 88 and 89. Come off. As a result, the holding of the button 20 and the spindle 83 is released, and they return to the front position by the urging force of the coil springs 73 and 87. Therefore, as the spindle 83 returns to the front, the biasing force of the coil spring 73 causes the auxiliary valve 67 to return to the closed position on the auxiliary valve seat 66 and the auxiliary valve port 68 is closed. Next, the movable member 60 also returns to the forward position by the urging force of the coil spring 73, the main valve 62 comes into contact with the main valve seat 59 and is closed, and the second water passage 36 and the shower side chamber 381 are shut off. The For this reason, it will be in a shower still water state. In this water stop state, the water pressure in the second water passage 36 returns to a high state, and the sub valve 67 and the main valve 62 are kept closed by the water pressure and the biasing force of the coil spring 73.

  Also in the currant side opening / closing valve 23, the button 22 is operated to cut off and communicate between the second water passage 36 and the currant side chamber 382 of the third water passage 38. Therefore, the same operation as that of the shower side on-off valve 21 is performed.

As described above, this embodiment has the following effects.
(1) The buttons 20 and 22 are pushed in by the pushing operation of the operation buttons 41 and 42, and the buttons 20 and 22 are held in the pushed state by the holding mechanism having the first and second cam portions 88 and 89 and the cam follower 90. Thus, the on-off valves 21 and 23 are kept open. In addition, when the operation buttons 41 and 42 are pushed again, the buttons 20 and 22 are pressed to enter a water stop state. For this reason, the operator can arbitrarily determine the water discharge time from the shower head or currant, and can obtain the required water discharge amount. In addition, at this time, the water discharge amount can be adjusted by the water discharge amount adjustment handle 18, and the water discharge temperature can be adjusted by the temperature adjustment handle.

  (2) When the buttons 20 and 22 are pushed, first, the sub valve 67 having a small pressure receiving area is opened, and the pressure difference between the second water passage 36 and the third water passage 38 becomes small. The main valve 62 is opened and a large amount of water is discharged. Therefore, even when the water supply pressure is high, it is not necessary to press the buttons 20 and 22, and the buttons 20 and 22 can be easily pushed.

  (3) In addition, water is discharged through the main valve 62 after the water pressure in the second water passage 36 decreases due to the opening of the sub valve 67. Accordingly, as the buttons 20 and 22 are pushed, a large amount of water is not instantaneously discharged, and it becomes easy to use.

  (4) At the time of water stoppage due to the second press of the buttons 20 and 22, the main valve 62 is closed after the sub valve 67 is closed. Accordingly, since the increase in the pressure difference between the second water passage 36 and the third water passage 38 is divided into two stages, the water hammer can be reduced unlike the case where the pressure difference instantaneously increases.

  (5) The cam portions 88 and 89 are respectively provided on the pair of flat plate portions 78, and the cam follower 90 is engaged with the cam portions 88 and 89 at both end portions 902 and 903, respectively, and at the intermediate portion 901, the mounting member 86 is rotatably supported. Therefore, the cam follower 90 is stably rotated around the intermediate portion 901, and a smooth operation as a holding mechanism can be obtained.

The present invention is not limited to the embodiment described above, and can be embodied in the following aspects.
In the above-described embodiment, the present invention is embodied in a faucet provided with on / off valves for showers and curans, but the present invention is embodied in a single faucet.

  As a holding mechanism for holding the buttons 20 and 22 of the on-off valves 21 and 23 in the pushed state, between the rotor provided on one of the buttons 20 and 22 and the insertion member 76 and the stator provided on the other Adopting a cam mechanism provided with a saw-tooth cam with continuous irregularities.

  The present invention is embodied in an on-off valve in which the auxiliary valve seat 66 and the auxiliary valve 67 are not provided. In this configuration, the main valve 62 is directly opened and closed by pressing the buttons 20 and 22.

  The buttons 20 and 22 of the shower side opening / closing valve 21 and the curran side opening / closing valve 23 are exposed on the front surface of the cover 30 covering the faucet body 11, and the operation buttons 41 and 42 of the cover 30 are omitted.

  DESCRIPTION OF SYMBOLS 11 ... Faucet body, 20 ... Button, 21 ... Shower side on-off valve, 22 ... Button, 23 ... Curran side on-off valve, 62 ... Main valve, 67 ... Sub valve, 88 ... First cam part, 89 ... Second cam Part, 90 ... cam follower.

Claims (5)

In the opening and closing valve of the faucet provided with a valve mechanism that is switched so that water discharge and water stop are performed by pressing the button.
When the button is pushed for the first time between the button and the valve mechanism, the valve mechanism is held in a water discharge state, and when the button is pushed for the second time, the valve mechanism is stopped. A faucet opening / closing valve with a holding mechanism.   The on-off valve has a main valve having a large pressure receiving area and a sub valve having a small pressure receiving area, and the main valve is opened after the sub valve is opened by a first operation of the button. The faucet on-off valve according to claim 1, wherein the positional relationship between the main valve and the sub valve is set.   The faucet on-off valve according to claim 1, wherein the holding mechanism is interposed between a valve case and a button.   The faucet opening / closing valve according to claim 3, wherein the holding mechanism includes a cam portion provided on the valve case side and a cam follower provided on the button side.   The faucet on-off valve according to claim 4, wherein a pair of the cam portions are disposed, and the cam follower engages with the cam portions at both ends.

Images