JP4370617B2 - Faucet device - Google Patents

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, in Japanese Patent Laid-Open No. 10-169801 (Patent Document 1), a seesaw-type lever that swings around a support shaft is provided as a push button, and a diaphragm-type opening / closing is performed by pressing the push button. A faucet device that switches between a water stop state and a water discharge state by placing a valve body of a valve in an open position and a closed position is described. Japanese Utility Model Laid-Open No. 52-98828 (Patent Document 2) also describes a water faucet device that switches between a water stop state and a water discharge state by operating a push button. These faucet devices are provided with push buttons for showers and curans, and water can be discharged from the showers or currants by operating the push buttons.

JP-A-10-169801 Japanese Utility Model Publication No. 52-98828

  A faucet device that switches between water stop and water discharge by a push button as in Patent Document 1 or 2 described above is very convenient because water can be discharged only by operating the push button, but the water temperature to be discharged is set to a high temperature. If you accidentally touch the push button for showering, and you are in a water discharge state, you will be covered with hot water from your head, which is very dangerous. Alternatively, if the faucet device is used in a kitchen and the two buttons are used to switch between discharging the raw water and discharging through the water purifier, the button for the water purifier is accidentally pressed while the temperature is set high. If so, there is a problem that hot water flows into the water purifier and the filter of the water purifier may be damaged.

  Accordingly, an object of the present invention is to provide a water faucet device that can prevent an erroneous operation of a push button when it is set to discharge hot water.

  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 a pressing operation is performed, and the faucet A temperature adjustment dial that is attached to the main body and adjusts the water temperature discharged from the faucet device by rotating, and in conjunction with this temperature adjustment dial, when the temperature adjustment dial is set to a high temperature, And an erroneous operation prevention mechanism that covers at least a part of at least one of the push buttons to prevent an erroneous operation.

In the present invention configured as described above, when the temperature adjustment dial is set to a high temperature, among the push buttons attached to the faucet body, for discharging water to an object that causes inconvenience when high temperature water is discharged. At least a part of the push button is covered with an erroneous operation preventing mechanism, which makes it difficult or impossible to push the push button.
According to the present invention configured as described above, it is possible to prevent an accident due to an erroneous operation of the push button when the high temperature water is set to be discharged.

In the present invention, it is preferable that the erroneous operation prevention mechanism is a cover member extending from the temperature adjustment dial, and when the temperature adjustment dial is set at a high temperature position, the cover member covers at least a part of the push button to be prevented from erroneous operation. .
According to the present invention configured as described above, since at least a part of the push button that is desired to prevent malfunction when it is set to a high temperature is covered with the cover member, it can be recognized at a glance that the temperature is set to a high temperature, and the malfunction is prevented. Can be prevented.

In the present invention, preferably, at least two push buttons and a temperature adjustment dial are arranged in series on the faucet body, and the cover member extends from the temperature adjustment dial toward the push button and is used for temperature adjustment. When the dial is set at a high temperature position, the cover member covers at least a part of the push button for which an erroneous operation is to be prevented.
According to the present invention configured as described above, an erroneous operation preventing mechanism can be configured with a very simple structure.

  The present invention relates to 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, It is attached to the valve, and each time it is pressed, it closes the on-off valve to bring it to a water-stopped state and opens the on-off valve to make the water discharge state. The temperature adjustment dial that adjusts the temperature of water discharged from the faucet device and the temperature adjustment dial, and when the temperature adjustment dial is set to a high temperature, at least one of the push buttons cannot be operated. And a locking mechanism for preventing erroneous operation.

  In the present invention configured as described above, when the temperature adjustment dial is set to a high temperature, the locking mechanism disables the push button for discharging water to a disadvantageous object when high-temperature water is discharged. Therefore, an accident due to an erroneous operation of the push button can be avoided.

  In the present invention, preferably, the locking mechanism is a locking member that is moved by the operation of the temperature adjustment dial. When the temperature adjustment dial is set to a high temperature, the operation of the push button that the locking member wants to prevent erroneous operation is performed. To prevent.

In the present invention, it is preferable that at least two push buttons are a shower push button and a currant push button, and an erroneous operation preventing mechanism or a locking mechanism prevents erroneous operation of the shower push button.
In the present invention configured as described above, it is possible to avoid a risk that high-temperature water is discharged from the shower unexpectedly and burns.

Further, in the present invention, preferably, at least two push buttons are a raw water spouting push button and a water purifier spouting push button, and an erroneous operation preventing mechanism or a locking mechanism prevents an erroneous operation of the water purifier spouting push button. To prevent.
In this invention comprised in this way, it can prevent that hot water flows into a water purifier and damages the filter of a water purifier.

  As described above, according to the faucet device of the present invention, it is possible to prevent an erroneous operation of the push button when the hot water is set to be discharged.

Embodiments of the present invention will be described below with reference to the accompanying drawings.
First, the basic configuration of a hot and cold water mixing faucet that is a faucet device according to a first embodiment of the present invention will be described with reference to FIGS. FIG. 1 is an overall perspective view showing a hot and cold water mixing faucet according to a first embodiment of the present invention, and FIG. 2 is a front view, a left side view and a right side view of the hot water and water mixing tap shown in FIG. 3 is a developed view showing the components of the hot and cold water mixing faucet shown in FIG. 1, and FIG. 4 is a plan view showing the faucet body of the first embodiment of the present invention. These are sectional views seen along the lines AA, BB and CC in FIG.

  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. This push button unit 106 locks the curan push button 108 for spouting water, the shower push button 110 for shower spouting, the base plate 112 to which these push buttons 108, 110 are attached, and the push buttons 108, 110. And a lock mechanism 142 that holds the water stop state. Further, the temperature adjustment dial 104 is provided with a cover member 105 which is an erroneous operation preventing mechanism. The cover member 105 is connected to the other end of the faucet body 102 from the temperature adjustment dial 104 attached to one end. It extends to the end.

  A desired water temperature is set by the temperature adjustment dial 104, and the mixing ratio of hot water and water is adjusted to obtain water discharge at an appropriate temperature. 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. 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.

  Furthermore, the temperature adjustment dial 104 is provided with a high temperature water discharge button 109. To set the temperature adjustment dial 104 to a predetermined temperature or higher, turn the temperature adjustment dial 104 to the predetermined temperature, and then press the high temperature water discharge button 109 to release the lock, and further move the temperature adjustment dial 104 to the high temperature side. Need to rotate. This prevents the temperature adjustment dial 104 from being unintentionally turned to the high temperature side.

  The cover member 105 is a rod-like member extending from the temperature adjustment dial 104 to the right end of the faucet body 102 in FIG. 1, and is rotatably supported at the right end. Therefore, the cover member 105 moves around the faucet body 102 in conjunction with the temperature adjustment dial 104 as shown in FIG. Further, a cover plate 105 a is provided at the right end of the cover member 105. When the temperature adjustment dial 104 is rotated to a temperature that is dangerous when water is discharged from the shower, for example, to a position of 45 ° C. or more, the cover plate 105a moves together with the temperature adjustment dial 104 to move from the position A1 in FIG. Move to the position A2 above the push buttons 108, 110. At the position A2 where the cover member 105 has moved above the push buttons 108 and 110, the cover plate 105a of the cover member 105 covers approximately 3/4 of the area of the push button 110, which is a push button for showering. The button 110 is very difficult to operate. For this reason, when the temperature adjustment dial 104 is set to a high temperature, there is a risk that the push button 110 for the shower is accidentally pushed, or that the object falls from the push button 110 and the push button 110 is pushed. Is avoided. In the present embodiment, when the push buttons 108 and 110 are set to the water discharge state, the push buttons 108 and 110 protrude upward from the faucet body 102, so that the push buttons 108 and 110 and the cover plate 105a A gap corresponding to the protrusions of the push buttons 108 and 110 is provided between them. However, since this gap is small, the push buttons 108 and 110 are not operated by accidentally inserting a finger into the gap. However, since the shower push button 110 is not completely covered with the cover plate 105a, when intentionally discharging hot water from the shower, put a finger on the uncovered portion of the push button 110. It is also possible to insert and push the push button 110 for shower. On the other hand, since the cover plate 105a does not exist in the portion of the push button 108 which is a push button for currant, even if the cover member 105 moves above the push button 108, the push button 108 can still be operated.

  In the present embodiment, the cover plate 105a of the cover member 105 covers a portion of the shower push button 110, so that even when the temperature adjustment dial 104 is set to a high temperature, the push button 110 is intentionally pressed. Although it can be pressed, as a modification, the cover plate 105 a may be configured to cover the entire shower push button 110.

  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.

  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.
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. Since it flows, there is no need to provide a heat insulating cover or the like because there is no burn even if it touches the faucet body.

  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 sectional view of the mixing faucet showing each level of the push button when the user operates the push button 108 (110). FIG. 11 is a push button. It is a side view which shows the water stop state (FIG. 11 (a)) and water discharge state (FIG.11 (b)) by a.

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.

  Further, the push button unit 106 includes a coil spring 140 that is an urging means for pressing the push buttons 108, 110 against the base plate 112 when the push buttons 108, 110 are attached to the base plate 112, and the push buttons 108, A lock mechanism 142 is provided for maintaining the water stop state and preventing the water discharge state even if the 110 is operated.

  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). The coil spring 140 is attached (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. 13) 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, first, the coil spring 140 is 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 (150a, 150b) forming the mounting groove 148 of the base plate 112, bends inward by elastic deformation, and climbs over the protrusion 150. , It is rotatably mounted in the mounting groove 148.

FIG. 10A shows the state of the push button when the water stops (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 the state of the push button at the time of water stoppage (closed state), in the on-off valve unit 130 (132), the operation portion 36 (see FIG. 13) is at the level L0 by the pilot valve switching holding mechanism (heart cam mechanism) 62 (see FIG. 13).
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 biasing force by the coil 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 coil 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 coil spring 140 to the base plate 112, that is, the button itself. It is possible to prevent vibration (exploding).

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. 12, 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. 14).

  In the on-off valve unit 32, as described above, the moving speed of the main valve 46 is intentionally reduced, but this is to suppress the occurrence 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 in more detail with reference to FIGS. 13 is a cross-sectional view showing a water stop state (closed state) in the on-off valve unit (pilot type on-off valve device), and FIG. 14 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. 13, the on-off valve unit 32 includes the operation unit 36, push rod 38, pilot valve 40, coil spring 42 serving 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 this embodiment, as shown in FIG. 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. 13 and 14, the movement distance (displacement amount) in the stroke direction of the push rod 38 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. 14).

  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. 13).

  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, referring to FIG. 15 and FIG. 16, according to the pilot type on-off valve device (on-off valve unit) described above, the load (spring load) acting on the coil spring which is the buffer means becomes small, thereby The spring constant can be reduced, and as a result, a good feeling of operation can be obtained and downsizing 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. 15 shows the movement distance (displacement amount) (mm) and the operation force F (when the water stop operation is performed by the on-off valve unit used in this embodiment (when switching from the water discharge state to the water stop state). N) is a diagram showing a relationship with N). FIG. 22 shows the relationship between the moving distance (displacement amount) (mm) of the operation unit 36 during the water stop operation by the on-off valve unit used in the present 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. 15, the operating force F is 3N until the pilot valve 40 abuts on the pilot valve port 44.
On the other hand, until the pilot valve 40 comes into contact with the pilot valve port 44 (between the position d0 and the position d1), as shown in FIG. 6, 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 is apparent from FIG. 15, as described above, during the water stop operation, (1) until the pilot valve 40 comes into contact with the pilot valve port 44, (2) the pilot valve 40 moves to 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 clear from FIG. 16, 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.

  Next, with reference to FIG.17 and FIG.18, the hot and cold water mixing faucet which is the faucet device of 2nd Embodiment of this invention is demonstrated. FIG. 17 is an overall perspective view of a hot and cold water mixing faucet according to a second embodiment of the present invention, and FIG. 18 is a plan view, a front view, a left side view, and a right side view. The hot and cold water mixing faucet of the second embodiment of the present invention differs from the first embodiment in the shape of the cover member. Accordingly, here, only the points of the second embodiment of the present invention 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.

  As shown in FIGS. 17 and 18, the hot and cold water mixing faucet 170 according to the second embodiment of the present invention includes a faucet body 102, and a temperature adjustment dial 104 and a push button unit 106 are provided on the faucet body 102. It is attached. This push button unit 106 locks the curan push button 108 for spouting water, the shower push button 110 for shower spouting, the base plate 112 to which these push buttons 108, 110 are attached, and the push buttons 108, 110. And a lock mechanism 142 that holds the water stop state. The temperature adjustment dial 104 is provided with a cover member 172, and the cover member 172 extends in the lateral direction over the faucet body 102.

  The temperature adjustment dial 104 is attached to the left end of the faucet body 102. The temperature adjustment dial 104 is formed with a lever portion 104a protruding in the radial direction. A cover member 172 is attached to the tip of the lever portion 104a. The cover member 172 extends laterally from the faucet body 102 to the right end of the faucet body 102 from the temperature adjustment dial 104 at the left end of the faucet body 102, and is rotatable to the right end of the faucet body 102. It is supported by. As best shown in FIG. 18A, an extended portion 172a is formed at the right end of the cover member 172, and the interval between the cover member 172 and the faucet body 102 is narrowed.

  The cover member 172 moves around the faucet body 102 in conjunction with the temperature adjustment dial 104 as shown in FIG. When the temperature adjustment dial 104 is rotated to a temperature that is dangerous when water is discharged from the shower, for example, to a position of 45 ° C. or more, the cover member 172 moves together with the temperature adjustment dial 104 to move from the position A1 in FIG. Move to the position A2 above the push buttons 108, 110. At the position A2 where the cover member 172 has moved above the push buttons 108 and 110, the push button 110, which is a shower push button, is covered with the extended portion 172a of the cover member 172 and is very difficult to operate. That is, in the portion where the extended portion 172a of the cover member 172 is present, there is only a small gap between the extended portion 172a and the push button 110, and thus it is impossible to operate the push button 110 with a finger inserted there. In the present embodiment, when the push buttons 108 and 110 are set to the water discharge state, the push buttons 108 and 110 protrude upward from the faucet body 102, and thus the push button 110 and the extended portion 172 a of the cover member 172. A gap corresponding to the protrusions of the push buttons 108 and 110 is provided between the two and the gap between them, but this gap is small and a finger cannot be inserted. For this reason, when the temperature adjustment dial 104 is set to a high temperature, there is a risk that the push button 110 for the shower is accidentally pushed, or that the object falls from the push button 110 and the push button 110 is pushed. Is avoided. However, since the extended portion 172a is not formed in the left end portion of the shower push button 110, the user can remove the push button 110 from the gap between the faucet body 102 and the cover member 172. It is still possible to intentionally extend a finger to a portion not covered by the extension 172a and press the push button 110. On the other hand, since the extended portion 172a is not formed in the portion of the push button 108 which is a push button for currant, even if the cover member 172 moves above the push button 108, the user The push button 108 can be operated by putting a finger between the push buttons 108.

In this embodiment, since the cover member 172 is configured to be large, the user can operate the temperature adjustment dial 104 by grasping the cover member 172, and the operability of the temperature adjustment dial 104 is improved. To do.
Further, as a modification, the gap between the push button 110 and the extended portion 172a of the cover member 172 is configured to be smaller than the distance protruding upward when the push buttons 108, 110 are in the water discharge state. Also good. With this configuration, the push button 110 and the extended portion 172a of the cover member 172 interfere with each other even if the temperature adjustment dial 104 is turned to the high temperature side while the push button 110 is operated to discharge water from the shower. And cannot be turned to the high temperature side. As a result, it is possible to prevent an erroneous operation in which the temperature adjustment dial 104 is erroneously turned to the high temperature side during water discharge from the shower. When the configuration of this modification is adopted, when the extended portion 172a of the cover member 172 is positioned above the push button 110, the push button 110 cannot be operated. It is good to make it cover.

  Next, with reference to FIG. 19 thru | or FIG. 21, the hot / cold water faucet of 3rd Embodiment of this invention is demonstrated. The hot and cold water mixing faucet of the present embodiment is configured such that the shower push button becomes inoperable when the temperature adjustment dial is set to a high temperature. FIG. 19 is an overall perspective view of a hot and cold water mixing faucet according to a third embodiment of the present invention. 20A is a plan view of the hot and cold water mixing faucet in a state where the push button for shower operation is possible, FIG. 20B is a left side view, and FIG. 20C is a right side cross-sectional view. Similarly, FIG. 21A is a plan view in a state in which the shower push button cannot be operated, and FIG. 21B is a right side sectional view. 20C is a cross-sectional view taken along line NN in FIG. 20A, and FIG. 20A is taken along line MM in FIG. 20B. It is shown as a staircase cross section. FIG. 21A is a cross-sectional view similar to FIG. 20A, and FIG. 21B is a cross-sectional view similar to FIG.

  As shown in FIGS. 19 to 21, reference numeral 201 denotes a hot and cold water mixing faucet according to the present embodiment. The hot and cold water mixing faucet 201 is provided so as to protrude from the wall surface that is the installation surface of the hot and cold water mixing faucet 201. Yes. The hot water / water mixing faucet 201 includes a faucet body 202 and a cover 203 that covers the upper surface of the faucet body 202, and a temperature adjustment dial 204 and two push buttons 208 and 210 are attached to the upper surface of the faucet body 202. It has been. Further, as shown in FIG. 20C, under the push buttons 208 and 210, open / close valve units 230 and 232 (only 232 are shown) for currant and shower are arranged, respectively. Since the configuration of each on-off valve unit is the same as that of the first embodiment, description thereof is omitted.

  Hot water and water flowing into the faucet body 202 are mixed at a ratio based on the setting of the temperature adjustment dial 204 and adjusted to an appropriate temperature. When the user presses the push button 208, the on-off valve unit 230 located below is opened, and water adjusted to an appropriate temperature is discharged from the currant water discharge port 216. Further, when the push button 210 is pressed, the on-off valve unit 232 positioned below the open button state is opened, and water adjusted to an appropriate temperature is discharged from the shower water outlet 218. The temperature adjustment dial 204 is provided with a hot water discharge button 209. When the temperature adjustment dial 204 is set to a high temperature (for example, 42 ° C. or higher), the temperature adjustment dial 204 is turned to a predetermined high temperature, and then the high temperature water discharge button 209 is pressed to release the lock. The temperature adjustment dial 204 is configured so that it cannot be turned to the high temperature side unless the use dial 204 is rotated to the high temperature side. This avoids the danger that the user unconsciously turns the temperature adjustment dial 204 to the high temperature side.

  Next, the locking mechanism of the shower push button 210 will be described. A gear portion 204 a is formed in a portion of the temperature adjustment dial 204 hidden under the cover 203. A locking member 206 is slidably supported on the back side of the cover 203. The locking member 206 is a plate-like member having an L-shaped protrusion, and a gear portion 206a is formed at the tip of the protrusion. When the temperature adjustment dial 204 shown in FIG. 20A is set to a low temperature side (for example, 40 ° C. lower than 45 ° C.), the gear portion 204a of the temperature adjustment dial 204 is The gear portion 206a of the member 206 is not engaged, and the locking member 206 is in the retracted position. Next, when the temperature adjustment dial 204 is turned to the right to set the water discharge temperature to a high temperature (for example, 50 ° C. higher than 45 ° C.), as shown in FIG. The gear portion 204a and the gear portion 206a of the locking member 206 mesh with each other, and the entire locking member 206 moves forward, so that the locking member 206 is in the protruding position. When the locking member 206 moves to the protruding position, the tip of the locking member 206 protrudes below the shower push button 210, and the push button 210 cannot be moved downward. This prevents erroneous operation of the shower push button 210 when the temperature adjustment dial 204 is set to a high temperature. Next, when the temperature adjustment dial 204 is turned counterclockwise to return the water discharge temperature to a low temperature, the locking member 206 is pulled back by the gear portion 204a of the temperature adjustment dial 204, and the locking member 206 is shown in FIG. Returning to the storage position shown in a), the shower push button 210 can be used.

  According to the hot and cold water mixing faucet of the third embodiment of the present invention, it is possible to avoid erroneous operation of the shower push button at the time of high temperature setting and spout of high temperature water from an unexpected shower due to falling objects on the shower push button. can do.

  Next, with reference to FIG. 22, the hot / cold water mixing tap according to the fourth embodiment of the present invention will be described. The hot and cold water mixing faucet of this embodiment, when one push button is pressed, the mixed water of hot water and water is directly discharged from the currant, and when the other push button is pressed, the mixed water of hot water and water is passed through the water purifier. The point discharged is different from the third embodiment. Therefore, here, only the points of the fourth embodiment different from the third embodiment will be described, and the same reference numerals will be given to the same components, and the description will be omitted.

  FIG. 22 is an overall perspective view of a hot and cold water mixing faucet according to the fourth embodiment of the present invention. As shown in FIG. 22, reference numeral 301 indicates a hot and cold water mixing faucet according to the present embodiment, and this hot and cold water mixing faucet 301 is provided so as to protrude from a wall surface that is an installation surface of the hot and cold water mixing faucet 301. The hot and cold water mixing faucet 301 includes a faucet body 202 and a cover 203 that covers the upper surface of the faucet body 202, and a temperature adjustment dial 204 and two push buttons 208 and 210 are attached to the upper surface of the faucet body 202. It has been. Further, an open / close valve unit (not shown) for raw water spouting and water purifier water spouting is disposed under the push buttons 208 and 210, respectively. As a result, when the raw water spouting push button 208 is pressed, hot water and water are mixed and mixed water adjusted to an appropriate temperature is discharged from the curan through the curan spout 216, and when the water purifier spout push button 210 is pressed, the mixed water Flows into the water purifier 302 through the water purifier water outlet 304 to be purified, and is discharged from the discharge port 302a of the water purifier. In addition, since the structure of each on-off valve unit is the same as that of 1st Embodiment, description is abbreviate | omitted.

  When the temperature adjustment dial 204 is set to a temperature that damages the filter of the water purifier, for example, 60 ° C. or higher, the water purifier water discharge push button 210 is locked (not shown). ) To prevent operation. Thereby, when the temperature adjustment dial 204 is set to a high temperature, it is possible to avoid accidentally pressing the water purifier water discharge push button 210 and damaging the filter of the water purifier 302. Note that the configuration of the locking mechanism that disables the push button 210 is the same as that of the third embodiment, and a description thereof will be omitted.

  According to the hot and cold water mixing faucet of the fourth embodiment of the present invention, high temperature water is supplied to the water purifier due to an erroneous operation of the water purifier water discharge push button at a high temperature setting or a fallen object on the water purifier water discharge push button. It is possible to avoid damaging the filter of the water purifier.

  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 embodiment described above, the push button for discharging water to the shower and the water purifier has been made difficult or impossible to operate by the erroneous operation preventing mechanism and the locking mechanism. It can be anything that is inconvenient when hot water flows in. In the above-described embodiment, there are two push buttons, and erroneous operation of one of the push buttons is prevented. However, the number of push buttons may be three or more, and one or more of them may be used. The present invention can also be configured to prevent erroneous operation of the push button.

1 is an overall perspective view showing a hot and cold water mixing faucet according to a first 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 showing the faucet body of a 1st embodiment of the present 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 1st Embodiment of this invention. It is the perspective view which looked at the pushbutton by 1st Embodiment of this invention from the back side. It is a front view which shows the pushbutton unit by 1st 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. 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 1st Embodiment of this invention. It is the schematic which shows the basic structure of the on-off valve unit of 1st 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 illustrating 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 first embodiment of the present invention. 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 1st Embodiment of this invention, and the spring load (N) which acts on a coil spring. It is a whole perspective view which shows the hot / cold water mixing faucet by 2nd Embodiment of this invention. FIG. 18 is a plan view (a), a front view (b), a left side view (c), and a right side view (d) of the hot and cold water mixing faucet shown in FIG. 17. It is a whole perspective view which shows the hot / cold water mixing faucet by 3rd Embodiment of this invention. FIG. 20 is a plan view (a), a left side view (b), and a right side cross-sectional view (c) of the hot and cold water mixing faucet shown in FIG. FIG. 20 is a plan view (a) and a right side cross-sectional view (b) of the hot and cold water mixing faucet shown in FIG. 19 when the shower push button cannot be operated. It is a whole perspective view which shows the hot / cold water mixing tap by 4th Embodiment of this invention.

Explanation of symbols

101 Hot water / water mixing faucet according to the first embodiment of the present invention 102 Faucet body 104 Temperature adjustment dial 105 Cover member 106 Push button unit 108 Callan push button 109 Hot water discharge button 110 Shower push button 112 Base plate 116 Callan spout 118 Shower outlet 120 Callan outlet pipe 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 Coil spring (biasing means)
142, 160 Lock mechanism 144 Support shaft 146 Operation protrusion 148 Mounting groove 150 Projection 152 Lock claw 154 Lock rib 170 Hot water / water mixing faucet 172 Cover member 201 of the second embodiment of the present invention Third embodiment of the present invention Hot water / water mixed faucet 202 Water faucet body 203 Cover 204 Temperature adjustment dial 206 Locking member 208 Callan push button 209 Hot water discharge button 210 Shower push button 216 Callan water discharge port 218 Shower water discharge port 301 Hot and cold water mixing faucet 302 of embodiment

Claims (7)

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 and close the on-off valve to make a water stop state and open the on-off valve to discharge water each time a pressing operation is performed;
A temperature adjustment dial that is attached to the faucet body and adjusts the water temperature discharged from the faucet device by rotating,
In conjunction with this temperature adjustment dial, when the temperature adjustment dial is set to a high temperature, an erroneous operation prevention mechanism that covers at least a part of at least one of the push buttons and prevents an erroneous operation;
A faucet device comprising:   The erroneous operation preventing mechanism is a cover member extending from the temperature adjustment dial, and when the temperature adjustment dial is set at a high temperature position, the cover member covers at least a part of the push button to be prevented from erroneous operation. The faucet device according to 1.   The at least two push buttons and the temperature adjustment dial are arranged in series on the faucet body, and the cover member extends from the temperature adjustment dial toward the push button, and the temperature adjustment dial is The faucet device according to claim 2, wherein the cover member covers at least a part of the push button which is desired to prevent erroneous operation when set at a high temperature position. 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 attached to the faucet body corresponding to each of the on-off valves and closing the on-off valve to make the water stop state and opening the on-off valve to discharge the water each time a pressing operation is performed;
A temperature adjustment dial that is attached to the faucet body and adjusts the water temperature discharged from the faucet device by rotating,
In conjunction with the temperature adjustment dial, when the temperature adjustment dial is set to a high temperature, at least one of the push buttons is made inoperable to prevent an erroneous operation;
A faucet device comprising:   The locking mechanism is a locking member that is moved by the operation of the temperature adjustment dial, and when the temperature adjustment dial is set to a high temperature, the locking member prevents the operation of the push button that is desired to prevent erroneous operation. The faucet device according to claim 4.   The at least two push buttons are a shower push button and a currant push button, and the erroneous operation preventing mechanism or the locking mechanism prevents an erroneous operation of the shower push button. The faucet device according to item 1.   The at least two push buttons are a raw water spouting push button and a water purifier spouting push button, and the erroneous operation preventing mechanism or the locking mechanism prevents an erroneous operation of the water purifier spouting push button. The faucet device according to any one of 5 to 5.

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