JP2005179915A - Faucet device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a faucet device which can surely prevent water from being accidentally ejected from an unintentional spout, even if a push button is erroneously operated, when the water is ejected from the faucet device. <P>SOLUTION: This faucet device (101), which switches between a water stop state and a water ejection state by opening/closing an on-off valve, comprises: a faucet body (102); the at least two on-off valves (130 and 132) which are attached to the faucet body; the at least two buttons (108 and 110) which are attached to the faucet body in such a manner as to correspond to the respective on-off valves, which put the on-off valve into the water stop state by closing the on-off valve each time a pushing operation is performed, and which put the on-off valve into the water ejection state by opening the on-off valve; and a locking mechanism (142) for keeping the on-off valves, corresponding to the other push buttons, in the water stop state, when any one of the push buttons is pushed so that the corresponding on-off valve can be brought into the water ejection state. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a water faucet device, and more particularly to a water faucet device that switches between a water stop state and a water discharge state by opening and closing an on-off valve.

2. Description of the Related Art Conventionally, a faucet device has been known in which opening and closing of a valve body is controlled to be switched between two states of a water stop state and a water discharge state by operating a push button.
For example, Japanese Patent Laid-Open No. 2001-304443 (Patent Document 1) uses a pilot valve type on-off valve having a mechanism for operating a pilot valve by a push button, thereby increasing the pressure in the back pressure chamber and closing the main valve. A water faucet device (water faucet device) is described. In such a faucet device, every time the push button is pressed, the water discharge state and the water stop state are switched.

JP 2001-304443 A

  In a faucet device that opens and closes an opening / closing valve by a push button as described in Patent Document 1 described above, for example, two opening / closing valves for shower and curan are provided to control switching between a water stop state and a water discharge state. Then, water can be discharged simultaneously from the shower and the currant.

  However, in such a faucet device, if the push button for the currant is pressed again during the water discharge from the currant to switch to the water-stopping state, if the push button for the shower is accidentally pushed, the water can be discharged from the shower. Therefore, there is a problem that the user unexpectedly suffers from water discharge from the shower. This is particularly dangerous when hot water is discharged from the currant. In addition, there is a case where there is a fallen object due to an earthquake or the like as well as a user's erroneous operation, and the push button automatically operates due to the fallen object, and there is a case where water is discharged from an unintended water outlet It is necessary to prevent the push button from operating even in such a situation.

  Therefore, the present invention has been made to solve the problems of the prior art, and even when the user pushes the push button accidentally while discharging water from the faucet device, the user can An object of the present invention is to provide a faucet device that can reliably prevent inconvenience such as being covered with water discharge.

  In order to achieve this object, the present invention provides a faucet device that switches between a water stop state and a water discharge state by opening and closing an on-off valve, and includes a faucet body and at least two on-off valves attached to the faucet body. And at least two push buttons attached to the faucet body corresponding to each on-off valve and closing the on-off valve to make the water-stopped state and opening the on-off valve to discharge the water each time the pressing operation is performed, And a lock mechanism that holds the water stop state of the open / close valve corresponding to the other push button when one of the buttons is pressed to set the corresponding open / close valve to the water discharge state.

In the present invention configured as described above, when one of the push buttons attached to the faucet body is pressed, the on-off valve corresponding to the button is opened and water is discharged. At this time, the lock mechanism keeps the on-off valves corresponding to the push buttons other than the pressed push button in a water-stopped state so that water is not discharged.
According to the present invention configured as described above, a push button corresponding to another open / close valve is accidentally pressed to switch the open / close valve in the water discharge state to the water stop state, and the unintended water discharge port unexpectedly It is possible to avoid the inconvenience of water being discharged.

In the present invention, it is preferable that the lock mechanism is configured such that when one of the push buttons is pressed, the other push button cannot be operated by being moved from the first position to the second position. It has a stop member.
In the present invention configured as described above, when a certain push button is pressed, the locking member is moved from the first position to the second position. When the locking member is in the second position, the other push buttons are locked and cannot be operated.
According to the present invention configured as described above, other buttons can be locked with a simple mechanism.

In the present invention, it is preferable that the lock mechanism further includes a biasing unit that applies a biasing force for moving the locking member to the locking member, and the biasing force is applied by pressing the push button. The locking member is moved against the biasing force of the means.
In the present invention configured as above, the locking member is moved in the direction pushed by the urging force by the urging means, or moved in the direction opposite to the direction of the urging force by the force pushing the push button. And reciprocates between the first position and the second position.
According to the present invention configured as described above, the locking member can be moved between the first position and the second position by only the operation of the push button, and switching between lock and unlock can be performed.

  In the present invention, it is preferable that the push button further has an engaging portion that engages with the locking member, and the locking member is engaged when the on-off valve corresponding to the push button is in a water stop state. When the corresponding on-off valve is operated from the water stop state to the water discharge state by operating the push button, the locking member is moved to the second position by the biasing force of the biasing means. When it is moved and the corresponding on-off valve is operated from the water discharge state to the water stop state by operating the push button, the engaging portion moves the locking member to the first position against the urging force of the urging means.

In the present invention, preferably, the faucet body is provided with a shower on-off valve for discharging water from the shower and a curan on-off valve for discharging water from the curan, and the lock mechanism is for the curan. When the on-off valve is in the water discharge state, the push button corresponding to the on-off valve for shower is locked to hold the on-off valve for shower in the water stop state.
In the present invention configured as above, when the opening / closing valve for curan is in a water discharge state, the lock mechanism locks the push button corresponding to the opening / closing valve for shower.
According to the present invention configured as described above, even if the shower push button is accidentally touched when water is discharged from the currant, the shower push button is locked, so that water is unexpectedly discharged from the shower. Never happen.

Further, in the present invention, preferably, the lock mechanism further locks the push button corresponding to the open / close valve for the curan to stop the open / close valve for the curan when the open / close valve for the shower is in the water discharge state. Hold on.
According to the present invention configured as described above, even when the water button is accidentally touched when water is discharged from the shower, the water button is accidentally discharged because the water button is locked. Never happen.

  According to the water faucet device of the present invention, when water is discharged from the water faucet device, it is possible to reliably prevent inconveniences such as the user suffering water discharge even if the push button is operated by mistake. can do.

Embodiments of the present invention will be described below with reference to the accompanying drawings.
First, a basic configuration of a hot and cold water mixing faucet that is a faucet device according to an embodiment of the present invention will be described with reference to FIGS. 1 is an overall perspective view showing a hot and cold water mixing faucet according to an embodiment of the present invention, FIG. 2 is a plan view of the hot and cold water mixing faucet shown in FIG. 1, and FIG. 3 is shown in FIG. FIG. 4 is a development view showing parts of the hot and cold water mixing faucet, FIG. 4 is a plan view showing the faucet body of the embodiment of the present invention, and FIG. 5 is a line AA and BB in FIG. It is sectional drawing seen along the line and CC line.

  As shown in FIGS. 1 and 2, reference numeral 101 denotes a hot and cold water mixing faucet according to the present embodiment. The hot and cold water mixing faucet 101 is provided so as to protrude from a wall surface that is an installation surface of the hot and cold water mixing faucet 101. Yes. This hot and cold water mixing faucet 101 includes a faucet body 102, and a temperature adjustment dial 104 and a push button unit 106 are attached to the faucet body 102. The push button unit 106 includes a curan push button 108 for discharging water, a shower push button 110 for shower water discharge, and a base plate 112 to which these push buttons 108 and 110 are attached.

  A desired water temperature is set by the temperature adjustment dial 104, the mixing ratio of hot water and water is adjusted, and water is discharged at an appropriate temperature. Further, by operating the curan push button 108, water is discharged from the curan, and by operating the shower spout push button 110, shower water is discharged from the shower.

Here, operability is improved by providing the operation surfaces of the curan push button 108 and the shower push button 110 on substantially the same surface as the surface of the faucet body 102.
A curan water spouting port 116 is provided on the front lower surface side of the mounting position of the curan push button 108, and a shower water spouting port 118 (see FIG. 2) is provided on the back side of the mounting position of the shower push button 110. It has been. A curan water discharge pipe 120 is connected to the curan water discharge port 116, and a shower hose 122 communicating with a shower head (not shown) is connected to the shower water discharge port 118.

  The user sets a desired temperature with the temperature adjustment dial 104, and immediately presses the push button 108 for currant water to obtain water spouting water, and presses the push button 110 for shower water to obtain shower water spouting. The water discharge of the mixed water of desired temperature can be obtained. When the push buttons 108 and 110 are pressed again, the water is stopped.

  According to this embodiment, the temperature adjustment dial 104, the curan push button 108, and the shower push button 110 are arranged on the faucet body 102 in this order, and further, the position of the curan push button 108 and the curan spout Since the positions of 116 substantially coincide with each other when viewed from above, it is easy for the user to use.

  Next, the flow of hot water in the hot and cold water mixing tap 101 will be described. First, hot water flowing into the hot and cold water mixing tap 102 from the water supply pipe and the hot water supply pipe is a stop cock provided for hot water and water, respectively. Thus, the flow rate is reduced to an appropriate flow rate, passes through a filter and a check valve respectively provided for hot water and water, and flows into the temperature control valve. The temperature control valve is a thermostat type hot and cold water mixing valve. Hot water and water are automatically adjusted to a desired set temperature, and the hot and cold water mixture flows out of the temperature control valve. Thereafter, the hot / cold water is discharged from the currant and the shower head through the on-off valve units (pilot-type on-off valve devices) 130 and 132 provided for the curan and the shower.

As shown in FIG. 3, the on-off valve units 130 and 132 are each fixed to the faucet body 102 by an on-off valve unit mounting nut 134. Here, the detailed structure of the on-off valve units 130 and 132 will be described later with reference to FIGS.
The push button unit 106 is also fixed to the faucet body 102 by a fixing screw 136.

  Thus, in this embodiment, since the push buttons 108 and 110 are unitized as the push button unit 106, the push button unit 106 may be simply attached to the faucet body 102, and the push buttons 108 and 110 may be attached to the faucet body. The assembly workability when assembling to 102 is improved.

  Also, when the on-off valve units 130 and 132 are taken out for maintenance, the on-off valve units 130 and 132 can be removed from the faucet body 102 very simply by removing the push button unit 106 from the faucet body 102. Therefore, maintainability is also improved.

Here, FIG. 5A is a cross-sectional view of the faucet body shown in FIG. 4 taken along line AA, and FIG. 5B is a view of the faucet body taken along line BB. FIG.5 (c) is sectional drawing which looked at the water faucet main body along CC line.
As shown in FIGS. 4 and 5, hot water and water are supplied to the faucet body 102 from the back, but only water and temperature-adjusted water (temperature-controlled water) are only present on the front side. It comes to flow. Therefore, even if the user touches the faucet body 102, there is no fear of burns, so there is no need to provide a heat insulating cover or the like.

  Next, the detailed structure of the push button unit 106 will be described with reference to FIGS. 6 is a developed view showing the parts of the push button unit 106, FIG. 7 is a perspective view of the push button 108 (110) seen from the back side, FIG. 8 is a front view of the push button unit 106, and FIG. FIG. 10 is a partial cross-sectional view of the hot and cold water mixing faucet showing each level of the push button when the user operates the push button 108 (110) when not locked. FIG. 11 is a side view showing the state of the push button during water stop (FIG. 11A) and the state of the push button during water discharge (FIG. 11B).

As shown in FIG. 6, the push button unit 106 includes the base plate 112, the curan push button 108 and the shower push button 110 attached to the base plate 112 as described above.
Further, the base plate 112 is integrally provided with a partition portion 138 for partitioning these push buttons between the curan push button 108 and the shower push button 110. Thereby, it is possible to prevent an erroneous operation when the user operates the curan push button 108 and the shower push button 110 with a simple structure.

  Further, when these push buttons 108 and 110 are attached to the base plate 112, the push button unit 106 operates the torsion spring 140 for pressing the push buttons 108 and 110 against the base plate 112, and operates the push button 110 when water is discharged from the currant. However, a locking member 142 for maintaining a water-stop state and preventing water discharge from the shower, and a coil spring 143 that is an urging means for applying an urging force to the locking member 142 are provided.

  Next, as shown in FIG. 7, the push button 108 (110) is provided with a pair of support shafts 144 (144a, 144b) at one end thereof, and the longer support shaft 144a of the support shafts 144 is attached to the push button 108 (110). Is provided with a torsion spring 140 (see FIG. 9). Further, on the back side of the push button 108 (110), there is integrally provided an operation projection 146 that contacts the operation portion 36 (see FIG. 23) of the on-off valve unit 130 (132) and transmits the pressing force of the user. Is provided.

  As shown in FIG. 9, at the time of attachment, the torsion spring 140 is first attached to the support shaft 144 a of the push button 108 (110), and then attached to the base plate 112. Specifically, the support shaft 144a of the shower push button 108 abuts on the protrusion 150 that forms the mounting groove 148 of the base plate 112, elastically deforms, bends inward, climbs over the protrusion 150, and moves over the mounting groove 148. It is attached in a rotatable manner.

FIG. 10A shows the state of the push button when the water is stopped (closed state). At this time, the upper surface of the push button 108 (110) and the upper surface (surface) of the faucet body 102 are at the same level. It has become. In this water stop state (closed state), in the on-off valve unit 130 (132), the position of the operating portion 36 (see FIG. 23) that contacts the operation protrusion 146 on the back side (lower side) of the push button 108 (110) Is at the level L0 by the pilot valve switching holding mechanism (heart cam mechanism) 62 (see FIG. 23).
Next, when switching from the water stop state to the water discharge state, as shown in FIG. 10B, the push button 108 (110) is temporarily released because the pilot valve switching holding mechanism (heart cam mechanism) 62 is released. Go down to the lowest position.

  Next, when the water discharge operation is finished from the state of FIG. 10B, the state shown in FIG. 10C is obtained, and at this time, the upper surface of the push button 108 (110) is higher by h1 than the faucet body 102. Is in position. Specifically, in this water discharge state, the position of the operation unit 36 that contacts the operation protrusion 146 of the push button 108 (110) in the on-off valve unit 130 (132) is set at the level L1 by the pilot valve switching holding mechanism 62. It has become. The position of the level L1 is higher than the level L0 by h1, and as a result, the push button 108 (110) is positioned above the surface of the faucet body 103. Yes.

As shown in FIG. 11 (a), in the water stop state, the push button 108 (110) has a relatively small urging force by the torsion spring 140 acting between the push button 108 (110) and the base plate 112. Or in a state where the urging force is substantially zero, it is pressed downward against the operating portion 36 of the on-off valve unit 130 (132). Further, as shown in FIG. 11 (b), in the water discharge state, the push button 108 (110) is pressed downward by a relatively large urging force by the torsion spring 140.
For this reason, when the user performs a water discharge operation for changing the water stop state to the water discharge state, the push button 108 (110) is pressed downward by the torsion spring 140 to the base plate 112, that is, the button itself. It is possible to prevent vibration (exploding).

  Next, a method for attaching the locking member 142 will be described with reference to FIGS. 12 is a view of the base plate 112 as viewed from the direction F in FIG. 6, FIG. 13 is a cross-sectional view taken along the line GG in FIG. 12, and FIG. 14 shows the locking member 142. (A) Front view and (b) Plan view, FIG. 15 is a side view of FIG. 14 (a), and FIG. 16 is a cross section of the push button unit 106 showing a state in which the locking member 142 is attached. FIG.

  First, as shown in FIGS. 12 and 13, the base plate 112 has a central bottom surface portion 172 on the bottom surface of the central portion, is formed higher than the other bottom surface portions 174 on the bottom surfaces on both sides, and further, The bottom surface portion 172 is provided with a protrusion 176 that protrudes downward.

  Next, as shown in FIGS. 14 and 15, the locking member 142 includes a locking piece 178 at a lower portion thereof, and a locking port portion 180 is formed by the locking piece 178. . Further, a step 182 is formed on the upper surface side of the locking piece 178. Further, as shown in FIG. 14, two locking claws 152 are formed at the right end portion of the locking member 142, and two engaging portions 153 are formed at the left end portion. The engaging portion 153 includes a wide base portion 153a, a narrow distal end portion 153c, and an inclined surface 153b extending therebetween. In this embodiment, the locking member 142 and the locking rib 154 formed on the push buttons 108 and 110 constitute a locking mechanism.

  Next, when attaching the locking member 142 to the base plate 112, first, the central bottom surface portion 172 of the base plate 112 is inserted into the locking port portion 180 of the locking member 142, as shown in FIG. Next, the locking piece 178 of the locking member 142 gets over the protrusion 176 of the base plate 112, and the protrusion 176 is accommodated in the step 182. As a result, the locking member 142 is attached to the base plate 112.

  Next, the operation of the locking member 142 will be described with reference to FIGS. 6 to 8 and FIGS. 17 to 21. 17 is a partial cross-sectional view showing the push button 110 when unlocked (FIG. 17 (a)) and when locked (FIG. 17 (b)) as viewed along the line EE in FIG. FIG. 19 is a front view showing positions when the locking member 142 is unlocked (FIG. 18A) and locked (FIG. 18B) in the push button unit of this embodiment. FIG. It is a perspective view which shows the position at the time of unlocking (FIG. 19 (a)) and the time of locking (FIG.19 (b)) of the latching member 142 in a button unit.

  As shown in FIG. 6, the locking member 142 according to the present embodiment includes two locking claw portions 152 and two engaging portions 153 that are integrally formed. Further, as shown in FIG. 7, the push button 108 (110) includes two locking ribs 154 that are integrally formed. As shown in FIG. 8, the locking member 142 can be moved in the left direction L and the right direction R along the base plate 112 by the user operating the push button 108 for currant (see FIG. 18 and FIG. 18). 19), the shower push button 110 is locked when moved in the R direction by bringing the curan push button 108 into the water discharge state, and the shower push button 110 is unlocked when moved in the L direction. It becomes.

  As shown in FIG. 19, the locking member 142 is urged in the R direction (the right direction in FIGS. 8 and 18 and the left direction in FIG. 19) by the urging force of the coil spring 143. As shown in FIGS. 18 (a) and 19 (a), when the curan push button 108 is in the water stop position, the base 153a of the engaging portion 153 is a lock formed on the curan push button 108. Since it engages with the rib 154, the locking member 142 is in the first position where the shower push button 110 is not locked. In a state where the locking member 142 is in the first position, the locking claw portion 152 of the locking member 142 and the locking rib 154 of the shower push button 110 are not engaged with each other. Can be operated. In this state, the base portion of the engaging portion 153 is engaged with the locking rib 154 of the curan push button 108, but the vertical movement of the curan push button 108 is not hindered. The push button 108 can also be operated.

  Next, when the currant push button 108 is operated to discharge water from the currant, the currant push button 108 moves upward as shown in FIGS. 18B and 19B. When the currant push button 108 moves upward, the locking member 142 moves in the R direction (the right direction in FIGS. 8 and 18 and the left direction in FIG. 19) by the biasing force of the coil spring 143, and the engagement portion 153 The front end 153c is engaged with a locking rib 154 formed on the currant push button 108. When the locking member 142 moves in the R direction and moves to the second position, the locking claw portion 152 of the locking member 142 and the locking rib 154 of the shower push button 110 are aligned, and the shower push button 110 is aligned. Cannot be pressed. For this reason, when water is discharged from the currant, the shower push button 110 cannot be operated to discharge water from the shower.

  Further, when the currant push button 108 is pressed from the state shown in FIGS. 18B and 19B, the rib 154 of the currant push button 108 presses the inclined surface 153b of the engaging portion 153, and this inclination The locking member 142 moves in the L direction against the biasing force of the coil spring 143 by the cam action of the surface 153b. When the curan push button 108 is pushed downward and returned to the water-stopped position, the base 153a of the engaging portion 153 comes into engagement with the rib 154 of the curan push button 108, and the locking member 142 is shown in FIG. It returns to the first position shown in FIG. 18 (a) and FIG. 19 (a).

  Thus, according to the faucet device 101 of the present embodiment, when the curan push button 108 is in the water discharge state, the locking member 142 moves to the second position, and therefore the shower push button 110. Is locked and cannot be pressed, and even if the user presses the shower push button 110 in an attempt to switch the curan to the water stop state, water is not discharged from the shower. This makes it possible to reliably prevent the shower push button from operating due to an erroneous operation or a fallen object due to an earthquake or the like and discharging water unexpectedly from the shower when water is discharged from the currant. At this time, if the temperature is set to a high temperature, burns may be caused, but this can also be reliably prevented.

  Next, a modified example of the locking mechanism will be described with reference to FIGS. This modification includes two locking members, and in addition to locking the push button 110 for shower when water is discharged from the currant, the push button for currant when water is discharged from the shower The point which locks 108 is different from the embodiment described above. FIG. 20 is an exploded view showing the parts of the push button unit in this modification, and FIG. 21 is a perspective view showing the action of the push button unit.

  As shown in FIG. 20, the push button unit 160 of the present modification includes a curan push button 108, a shower push button 110, a base plate 112, a shower latch member 162, and a currant latch member 166. Have. Further, the push button unit 160 of the present modification includes two torsion springs 140 that urge the push buttons 108 and 110, a coil spring 164 that is an urging means that urges the shower locking member 162, and a currant. And a coil spring 168 that is a biasing means that biases the locking member 166.

  The lock button 108 is formed with two locking ribs 155a and 155b, and the shower push button 110 is formed with two locking ribs 155c and 155d. Further, the shower engaging member 162 is formed with an engaging portion 172 that engages with the locking rib 155a at the right end in FIG. 20, and the locking engagement member 172 that engages with the locking rib 155c on the left side. A claw portion 170 is formed. An engagement portion 176 that engages with the locking rib 155d is formed at the left end portion in FIG. 20 on the currant engagement member 166, and a locking claw portion that engages with the locking rib 155b on the right side. 174 is formed. Further, each of the engaging portions 172 and 176 includes base portions 172a and 176a having wide widths, tip portions 172c and 176c having narrow widths, and inclined surfaces 172b and 176b extending therebetween, respectively. Further, the currant locking member 166 is biased in the R direction by the coil spring 164. Similarly, the shower locking member 166 is urged in the L direction by a coil spring 168.

  Next, the operation of the present modification will be described with reference to FIG. FIG. 21A shows a case where the curan push button 108 and the shower push button 110 are both in the water stop position. In this state, since the base 172a of the engaging portion 172 of the shower locking member 162 is engaged with the locking rib 155a of the currant button 108, the shower locking member 162 is connected to the coil spring 164. The first position is pressed in the L direction against the bias. On the other hand, since the base 176a of the engaging portion 176 is engaged with the locking rib 155d of the shower button 110, the currant locking member 166 is pressed in the R direction against the bias of the coil spring 168. In the first position. In this state, the locking claw portion 170 of the shower locking member 162 is not aligned with the locking rib 155c of the shower button 110, so that the shower button 110 can be pressed. On the other hand, since the locking claw portion 174 of the locking member 166 for the currant is not aligned with the locking rib 155b of the button for currant 108, the pressing button 108 can also be pressed.

  FIG. 21B shows the case where the curan push button 108 is set to the water discharge position. In this case, the curan push button 108 moves upward (backward in FIG. 21), so that the lock rib 155a of the currant push button 108 is the tip of the engaging portion 172 of the shower locking member 162. Engage with the portion 172c. For this reason, the shower locking member 162 is pushed in the R direction by the urging force of the coil spring 164 and moves to the second position. When the shower locking member 162 moves to the second position, the locking claw portion 170 of the shower locking member 162 and the locking rib 155c of the shower push button 110 are aligned. The press operation cannot be performed. In the state of FIG. 21 (b), when the curan push button 108 is pressed again, the shower locking member 162 of the coil spring 164 is caused by the cam action of the inclined surface 172 b of the engaging portion 172 of the shower locking member 162. Pushed in the L direction against the urging force. When the shower locking member 162 is pushed in the L direction and returned to the first position, the base portion 172a of the engaging portion 172 comes into engagement with the locking rib 155a of the currant push button 108, and FIG. Return to the state of (a).

  FIG. 21C shows a case where the shower push button 110 is in the water discharge position. In this case, since the shower push button 110 moves upward (backward in FIG. 21), the lock rib 155d of the shower push button 110 is the tip of the engaging portion 176 of the currant locking member 166. Engage with the portion 176c. For this reason, the currant locking member 166 is pushed in the L direction by the urging force of the coil spring 168 and moves to the second position. When the currant locking member 166 moves to the second position, the locking claw portion 174 of the currant locking member 166 and the locking rib 155b of the currant push button 108 are aligned with each other. The press operation cannot be performed. When the shower push button 110 is pressed again in the state of FIG. 21C, the curan lock member 166 is moved by the cam action of the inclined surface 176 b of the engagement portion 176 of the callan lock member 166. Pushed in the R direction against the biasing force. When the currant locking member 166 is pushed in the R direction and returned to the first position, the base portion 176a of the engaging portion 176 comes into engagement with the locking rib 155d of the shower push button 110, and FIG. Return to the state of (a).

  According to this modification, the shower push button 110 is locked when the water is discharged from the currant, and the water push button 108 is locked when the water is discharged from the shower. Even when the user presses the push button for the curan by mistake when trying to switch to the state, the water can be prevented from being unexpectedly discharged.

Next, the basic structure of the on-off valve unit 130 (132), which is a pilot-type on-off valve device, will be described with reference to FIG.
As shown in FIG. 22, the on-off valve unit 130 (132) includes an operation unit 36 that is pushed downward by the pressing operation when the user presses the shower push button 108 (110), and the operation unit 36 has its base. A push rod 38 having ends connected thereto and a pilot valve 40 provided at the tip of the push rod 38 are provided. Here, a coil spring 42 as a buffer means is provided between the tip (lower end) of the push rod 38 and the pilot valve 40. The on-off valve unit 32 is further provided with a pilot valve port (pressure release hole) 44 below the pilot valve 40, a diaphragm type main valve 46 with which the pilot valve 40 abuts and disengages from the pilot valve port 44, and this A housing 50 is formed on the back surface of the main valve 46 for forming a pressure chamber 48 for accommodating the push rod 38, the pilot valve 40 and the coil spring 42, and a valve seat 52 on which the surface of the main valve 46 is seated and separated. I have. Further, a seal member 54 is provided at a portion of the housing 50 where the push bar 38 is inserted. Further, a small hole (primary pressure inlet) 56 is formed on the outer peripheral side of the main valve 46.

  Next, the basic operation of the on-off valve unit 130 (132) will be described. In the on-off valve unit 130 (132), the pilot valve 40 provided in the pressure chamber 48 is brought into contact with and dissociated from the pilot valve port 44 of the main valve 46, thereby opening and closing the pilot valve 40 and stopping water. It is designed to switch between water discharge.

  First, when switching from the water discharge state to the water stop state, the pilot valve 40 must be pushed by the push rod 38 in the direction in which the pilot valve 40 abuts the pilot valve port 44. At this time, the push bar 38 receives an upward force due to the water pressure acting on the area corresponding to the cross-sectional area thereof, and further has a sliding frictional resistance due to the seal member 54. It is necessary to push the operation portion 36 against these. However, this force (operation force) is a small value.

Next, when the pilot valve 40 comes into contact with the pilot valve port 44 of the main valve 46, the primary pressure water in the primary side water passage flows into the pressure chamber 48 through the small hole 56, and accordingly, the main valve 46. Moves toward the valve seat 52 at a slow speed. As a result, the main valve 46 is seated on the valve seat 52 and switched to the water stop state.
Further, in the on-off valve unit 130 (132), the coil spring 42 as a buffer means is provided between the push rod 38 and the pilot valve 40, that is, in the pressure chamber 48. The force does not act until the pilot valve 40 abuts on the pilot valve port 44. Further, as will be described in detail later, a small force may be applied after the pilot valve 40 abuts on the pilot valve port 44. .

  When switching from the water stop state to the water discharge state, if the operation unit 36 is pressed, the pilot valve 40 is connected to the pilot valve port (pressure release) of the main valve 46 by a pilot valve holding switching mechanism 62 and an urging spring 68 described later. The pressure chamber 48 is opened, the main valve 46 is separated from the valve seat 52, and a water discharge state is entered (see FIG. 24).

  In the on-off valve unit 132, as described above, the moving speed of the main valve 46 is intentionally reduced, but this is to suppress the generation of a water hammer when the main valve 46 is closed. That is, when the primary water flows into the pressure chamber 48 from the small hole 56 provided in the main valve 46, the pressure chamber 48 is filled with the primary pressure water, and the main valve 46 moves toward the valve seat 52. However, since the small hole 56 usually has a very small diameter, the inflow speed of water into the pressure chamber 48 can be suppressed, thereby suppressing the moving speed (closing speed) of the main valve 46 and the water hammer when the main valve is closed. I try to suppress the occurrence of.

  Next, the structure of the on-off valve unit (pilot-type on-off valve device) 130 (132) will be described more specifically with reference to FIGS. FIG. 23 is a sectional view showing a water stop state (closed state) in the on-off valve unit (pilot type on-off valve device), and FIG. 24 shows a water discharge state (open state) in the on-off valve unit (pilot type on-off valve device). It is sectional drawing.

  First, as shown in FIG. 23, the on-off valve unit 132 includes the operation unit 36, push rod 38, pilot valve 40, coil spring 42 as a buffer means, pilot valve port (pressure release hole) already described with reference to FIG. A diaphragm-type main valve 46 having 44, a housing 50 (50a, 50b) for forming a pressure chamber 48, a valve seat 52, a seal member 54, and a small hole 56 are provided.

  Next, a cleaning pin 58 is inserted into the small hole (primary pressure inlet) 56 described above, and the water flow area of the primary pressure inlet of the small hole 56 is reduced. Accordingly, as described above, the closing speed of the main valve 46 is made gentle by suppressing the inflow speed of the primary pressure into the pressure chamber, and the water hammer generated at the closing time can be reduced.

  The housing 50 forming the pressure chamber 48 includes a first housing 50a that mainly surrounds a space in which the pilot valve 40 is disposed, and a second housing 50b that surrounds a space on the back side of the main valve 46.

  Further, an assembly nut 60 for assembling the on-off valve unit 32 is assembled on the outermost peripheral side by assembling four parts of the operation portion 36, the first housing 50a, the second housing 50b, and the valve seat 52. Yes.

  The on-off valve unit 130 (132) further includes a pilot valve switching holding mechanism 62. The pilot valve switching holding mechanism 62 is interlocked with the above-described curan push button 108 and shower push button 110, and every time the push buttons 108 and 110 are pushed, that is, every time the operation unit 36 is pushed. The pilot valve 40 has a function of repeatedly switching the water discharge state position and the water stop state position and holding the pilot valve 40 at the water discharge state position and the water stop state position.

  The pilot valve switching and holding mechanism 62 may be a mechanism that is generally used in a knock type ballpoint pen knock mechanism or the like, but in the present embodiment, as shown in FIG. 23, a pin 64 that moves in conjunction with the operation unit 36 and An inverted heart-shaped cam groove 66 that is formed on the outer peripheral surface of the first housing 50a and moves along the lower side of the pin 64 while elastically deforming, and for holding the pin 64 in a water-stopped state (closed state) A heart cam mechanism formed from the protrusions 68.

  Since the pilot valve switching and holding mechanism 62 is a heart cam mechanism, only the reciprocating motion (vertical motion) of the push rod 38 acts on the seal member 54 that seals the pressure chamber 48. Since the rotational motion does not act, the burden on the seal member 54 is reduced, and high reliability is obtained.

  Reference numeral 69 denotes an urging spring. When the urging spring 69 is operated to switch from the water stop state to the water discharge state, that is, when the push buttons 8 and 10 are pressed, the pilot valve switching holding is performed. The holding at the water stop state position by the mechanism 62 is released, the operation unit 36 is biased upward, the pilot valve 40 is dissociated from the valve body 42, and can be easily switched to the water discharge state.

  Next, the connecting portion between the push rod 38 and the pilot valve 40 will be described. As shown in FIGS. 23 and 24, the movement distance (displacement amount) of the push rod 38 in the stroke direction is absorbed into the pressure chamber 48 at the tip (lower end) of the push rod 38 as described above. A coil spring 42 which is a buffer means is provided. A large diameter portion 38 a is formed at the tip (lower end) of the push rod 38, and a packing 40 a is attached to the tip of the pilot valve 40. The pilot valve 40 has a hollow portion 40b, and a coil spring 42 is built in the hollow portion 40b. An insertion hole 40c into which the push rod 38 is slidably inserted is formed above the pilot valve 40. The pilot valve 40 is made of an elastically deformable resin material. When the pilot valve 40 is assembled, the push rod 38 is inserted into the insertion hole 40c while the pilot valve 40 is deformed, and the large portion of the push rod 38 is inserted into the hollow portion 40b. The diameter portion 38a is accommodated. Here, the coil spring 42 acts in a direction to separate the push rod 38 and the pilot valve 40.

  Thereby, at the time of water discharge operation to switch from the water stop state to the water discharge state, the large diameter portion 38a at the tip of the push rod 38 and the upper side of the pilot valve 40 are engaged by the urging force of the coil spring 42. In conjunction with the movement of the push rod 38, the seat moves away from the pilot valve port 44 formed in the main valve 46 (see FIG. 24).

  In the water stop operation for switching from the water discharge state to the water stop state, when the pilot valve 40 abuts on the pilot valve port 44 formed in the main valve 46, the large diameter portion 38a of the push rod 38 is separated from the upper side of the pilot valve 40. However, the moving distance (displacement amount) of the push rod 38 in the stroke direction is absorbed by the coil spring 42 (see FIG. 23).

  As a result, during the water stop operation, there is a difference in operating force between (1) until the pilot valve 40 contacts the pilot valve port 44 and (2) after the pilot valve 40 contacts the pilot valve port 44. (Unevenness) is eliminated, and the operational feeling is preferable.

  Further, in the on-off valve unit 130 (132), as described above, the upward force (water pressure acting on the area corresponding to the cross-sectional area of the push rod 38) received by the water pressure in the pressure chamber 48 is applied to the push rod 38. Therefore, in order to reduce the operating force in the operating portion 36, the diameter of the push rod 38 is preferably as small as possible. For example, the push rod 38 may be formed with a smaller diameter than the pilot valve port 44 of the main valve 46 (not shown). Thereby, even at the time of high water pressure, the operating force (pushing force) can be lowered and reliable water-stopping can be ensured.

Further, when the pilot valve 40 is stopped, that is, when the pilot valve 40 is seated on the pilot valve port 44, the pilot valve 40 receives the primary pressure, and as a result, the pilot valve 40 is seated on the pilot valve port 44. The force works in the direction to make sure the water stop function.
Further, the push bar 38 is formed of stainless steel. For this reason, even when the push rod 38 has a small diameter, sufficient corrosion resistance is obtained for use in water, and reliability is improved.

Next, according to FIG. 25 and FIG. 26, according to the above-described pilot type on-off valve device (on-off valve unit), the load (spring load) acting on the coil spring which is the buffer means is reduced, and the spring constant is thereby reduced. The size can be reduced, and as a result, a good operational feeling can be obtained, and compactness can be achieved. The reason will be described below.
Here, a description will be given by taking as an example a condition that the diameter of the push rod 38 is 2 mm, the water pressure is 0.75 MPa (maximum value of the water pressure), and the force against the sliding frictional resistance of the seal member 54 is 0.6N.

  FIG. 25 shows the moving distance (displacement amount) (mm) and the operating force F (when the water stop operation is performed by the on-off valve unit used in the present embodiment (when switching from the water discharge state to the water stop state). N) is a diagram showing a relationship with N). FIG. 26 shows the relationship between the movement distance (displacement amount) (mm) of the operation unit 36 during the water stop operation by the on-off valve unit used in this embodiment and the spring load (N) acting on the coil spring. FIG. Here, d0 is a position when the water stop operation is started, d1 is a position where the pilot valve 40 abuts on the pilot valve port 44, and d2 is a lowermost position at which the operation unit 36 can be moved (displaced) by the pilot valve switching holding mechanism 62. Indicates the position.

First, in the present embodiment, the coil spring 42 is attached to the hollow portion 40b of the pilot valve 40 in a state where a very small load (for example, 0.1 N) is applied during assembly.
Next, between the position d0 and the position d1, that is, until the pilot valve 40 comes into contact with the pilot valve port 44, the force applied to the push rod 38 by the above-described water pressure is 2.4 N (= the push rod The cross-sectional area × water pressure = 3.14 mm ² × 0.75 MPa) and the operating force 3N (= 2.4N + 0.6N) that balances the resultant force of 0.6N against the sliding frictional resistance of the seal member 54 is acting. As a result, as shown in FIG. 25, the operating force F is 3N until the pilot valve 40 contacts the pilot valve port 44.

On the other hand, until the pilot valve 40 abuts on the pilot valve port 44 (between the position d0 and the position d1), as shown in FIG. 26, no load is applied to the coil spring 42. The spring load is zero.
Next, after the pilot valve 40 comes into contact with the pilot valve port 44, it is necessary to bend the coil spring 42 by operating force. The pilot spring 40 contacts the pilot valve port 44 with this coil spring 42. Since almost no load is applied until contact, the spring load that acts to deflect the coil spring 42 may be a very small load (nearly zero). Therefore, in the pilot type on-off valve device used in the present embodiment, the spring load is reduced at the lowermost position d2 where the operating portion 36 can move (displace). A small spring constant was set to a value of about 0.4N.

  More specifically, the deflection amount (δ) of the coil spring 42 is 4 mm after the pilot valve 40 comes into contact with the pilot valve port 44, that is, when the moving distance of the operation portion changes from d1 to d2. . Here, when the spring load at the time of assembly is zero, the spring constant of the coil spring 42 is 0.1 N / mm (= 0.4 N / 4 mm), and the spring load at the time of assembly is 0.1 N. In this case, 0.075 N / mm (= (0.4−0.1) N / 4 mm).

Here, the preferable range of the spring constant of the coil spring which is a buffer means in the on-off valve unit of this embodiment will be described.
First, in the present embodiment, a range of 0.01 to 2 N / mm is preferable, and by setting the spring constant of the coil spring to this range, (1) the pilot valve 40 is connected to the pilot valve port 44 during the water stop operation. (2) There is no difference (unevenness) in operating force both after the pilot valve 40 comes into contact with the pilot valve port 44 and the feeling of operation becomes favorable.

Next, when the operation force (3N) until the pilot valve 40 abuts on the pilot valve port 44 (between d0 and d1) is set as the initial operation force, after the pilot valve 40 abuts on the pilot valve port 44, If the applied operating force (spring load) is equal to or less than the initial operating force value (3N), during the water stop operation, (1) until the pilot valve 40 contacts the pilot valve port 44 (2 ) There is no difference (unevenness) in the operating force both after the pilot valve 40 abuts on the pilot valve port 44, and the operational feeling becomes more preferable. In this case, the spring constant of the coil spring may be set to 0.01 to P ₁ d ² π / (4δ) N / mm. Here, δ is a deflection amount (mm) of the coil spring, P ₁ is a hydraulic pressure (MPa), and d is a diameter (mm) of the push rod portion.

  More specifically, the case described above will be described. When the diameter of the push rod is 2 mm, the water pressure is 0.75 MPa (maximum value of the water supply pressure), and the deflection amount of the coil spring 42 is 4 mm, the coil spring The spring constant is 0.01 to 0.75 N / mm (= 3 N / 4 mm).

  For this reason, in this embodiment, the spring constant of the coil spring may be set in a range of 0.01 to 0.75 N / mm, whereby (1) the pilot valve 40 is connected to the pilot valve port 44. Until the contact, (2) the difference (unevenness) in the operation force disappears both after the pilot valve 40 contacts the pilot valve port 44, and the operation feeling becomes more preferable.

  The minimum value of the spring constant of the coil spring in the present embodiment described above is a condition necessary for reducing the spring constant of the coil spring, which reduces the diameter of the spring gland material of the coil spring, and reduces the number of turns of the coil spring. Based on the three conditions of increasing the diameter of the coil spring, it was set to 0.01 N / mm.

Thus, in this embodiment, the spring constant of the coil spring 42 can be set small.
As a result, as apparent from FIG. 25, as described above, during the water stop operation, (1) until the pilot valve 40 abuts on the pilot valve port 44, and (2) the pilot valve 40 is in contact with the pilot valve port 44. In both cases after the contact, the difference (unevenness) in the operation force disappears, and the operation feeling is preferable.

Furthermore, according to the present embodiment, as is apparent from FIG. 26, the spring load acting on the spring is reduced, a good operational feeling can be obtained, and further downsizing can be achieved.
Further, when the shower push button 10 or the like is strongly pressed and the pilot valve 40 is rapidly brought into contact with the pilot valve port 44 to close the valve, the spring constant of the coil spring 42 is set to a small value, thereby reducing the spring load. Since it is made small, the moving speed of the main valve 46 can be slowed. As a result, the generation of an instantaneous large load acting on the main valve is prevented, and the life of the diaphragm can be extended.

  As mentioned above, although preferable embodiment of this invention was described, a various change can be added to embodiment mentioned above. In particular, in the above-described embodiment, the faucet device includes two push buttons for shower water discharge and curan water discharge, but the faucet device may include three or more push buttons. In this case, when one of the push buttons is discharged, all the other push buttons may be locked, or a part of the other push buttons is locked. You may comprise as follows. In the above-described embodiment, the faucet device switches between water discharge from the shower and water discharge from the currant, but the target to be discharged by switching the on-off valve can be any water purifier or the like.

1 is an overall perspective view showing a hot and cold water mixing faucet according to an embodiment of the present invention. FIG. 2 is a plan view of the hot and cold water mixing faucet shown in FIG. 1. It is an expanded view which expand | deploys and shows the components of the hot / cold water mixing faucet shown in FIG. It is a top view which shows the faucet main body of embodiment of this invention. It is sectional drawing seen along the AA line of FIG. 4, a BB line, and CC line. It is an expanded view which expands and shows the components of the pushbutton unit by embodiment of this invention. It is the perspective view which looked at the pushbutton by embodiment of this invention from the back side. It is a front view which shows the pushbutton unit by embodiment of this invention. It is sectional drawing seen along the DD line | wire of FIG. It is a fragmentary sectional view of the mixing faucet which shows each level of a push button when a user operates a push button at the time of lock release. It is a side view which shows the water stop state (FIG. 11 (a)) and water discharge state (FIG.11 (b)) by the push button of embodiment of this invention. It is the figure which looked at the base plate of this embodiment from the F direction of FIG. It is sectional drawing seen along the GG line of FIG. It is the (a) front view and (b) top view which show the locking member of this embodiment. It is a side view of FIG. It is sectional drawing of the pushbutton unit which shows the state in which the latching member in this embodiment was attached. It is the fragmentary sectional view which shows the time of unlocking (FIG. 17 (a)) and the time of locking (FIG. 17 (b)) of the pushbutton unit (including on-off valve unit) seen along the EE line of FIG. . In the pushbutton unit of the faucet device by this embodiment, it is a front view which shows the state (FIG. 18 (a)) and the locked state (FIG.18 (b)) in which the pushbutton for showers is not locked. In the pushbutton unit of the faucet device by this embodiment, it is a back perspective view showing the state where a pushbutton for showers is not locked (Drawing 19 (a)), and the locked state (Drawing 19 (b)). It is a back perspective view which expands and shows the pushbutton unit of the modification of this embodiment. It is a back perspective view showing the state where the pushbutton unit of the modification of this embodiment is not locked. It is a back perspective view showing the state where the pushbutton for showers of the pushbutton unit of the modification of this embodiment was locked. It is a back perspective view which shows the state where the push button for currants of the pushbutton unit of the modification of this embodiment was locked. It is the schematic which shows the basic structure of the on-off valve unit of embodiment of this invention. It is sectional drawing which shows the water stop state (closed state) in an on-off valve unit. It is sectional drawing which shows the water discharge state (open state) in an on-off valve unit. FIG. 5 is a diagram showing a relationship between a movement distance (displacement amount) of an operation unit and an operation force F during a water stop operation according to the present embodiment. It is the diagram which showed the relationship between the movement distance (displacement amount) of the operation part at the time of the water stop operation by this embodiment, and the spring load (N) which acts on a coil spring.

Explanation of symbols

DESCRIPTION OF SYMBOLS 101 Hot-water mixing faucet 102 Faucet body 106 Push button unit 108 Push button for currant 110 Shower push button 112 Base plate 116 Curran spout 118 Shower spout 120 Curran spout 130, 132 On-off valve unit (pilot type on-off valve device)
134 On-off valve unit mounting nut 136 Fixing screw 138 Partition 140 Torsion spring 142 Locking member 143 Coil spring 144 Support shaft 146 Operation protrusion 148 Mounting groove 150 Projection 152 Locking claw 153 Engagement section 154 Locking rib 160 Push Button Unit 162 According to Modification 162 Shower Locking Member 164 Coil Spring 166 Callan Locking Member 168 Coil Spring 170 Lock Claw 172 Engagement 174 Lock Claw 176 Engagement

Claims (6)

A faucet device that switches between a water stop state and a water discharge state by opening and closing an on-off valve,
The faucet body,
At least two on-off valves attached to the faucet body;
At least two push buttons that are attached to the faucet body corresponding to each of the on-off valves, close the on-off valve to make the water stop state and open the on-off valve to make the water discharge state each time a pressing operation is performed,
A lock mechanism for holding the water stop state of the on-off valve corresponding to the other push button when one of the push buttons is pressed to set the corresponding on-off valve to the water discharge state;
A faucet device comprising:   The lock mechanism includes a locking member that prevents operation of the other push buttons by moving from the first position to the second position when one of the push buttons is pressed. Item 1. The faucet device according to item 1.   The lock mechanism further includes a biasing unit that applies a biasing force for moving the locking member to the locking member, and the biasing force of the biasing unit is operated by pressing the push button. The faucet device according to claim 2, wherein the locking member is moved against the movement.   The push button further includes an engaging portion that engages with the locking member. When the on-off valve corresponding to the push button is in a water stop state, the locking member is engaged with the engaging portion. Then, when the corresponding on-off valve is held from the water stop state to the water discharge state by operating the push button, the locking member moves to the second position by the biasing force of the biasing means. When the push button is operated to change the corresponding on-off valve from the water discharge state to the water stop state, the engagement portion moves the locking member to the first position against the urging force of the urging means. The faucet device according to claim 3.   The faucet body is provided with a shower on / off valve for discharging water from the shower and a curan on / off valve for discharging water from the currant, and the lock mechanism has a water discharge state on the open / close valve for the curan. The faucet device according to any one of claims 1 to 4, wherein a push button corresponding to the on-off valve for the shower is locked to hold the on-off valve for the shower in a water-stopped state.   The lock mechanism further locks a push button corresponding to the curran on / off valve to hold the curan on / off valve in a water stop state when the shower on / off valve is in a water discharge state. Faucet device.

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