JP2006329304A - Mixing faucet of automatic temperature control type - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a mixing faucet of an automatic temperature control type, wherein the temperature of hot water to be discharged is hardly changed from a set temperature without communicating a water supply pipe with a hot water supply pipe in a water stopped condition. <P>SOLUTION: A flow control unit 18 controls the flow amount of water to be supplied from a primary side water channel 20 to a secondary side water channel 22 and the flow amount of hot water to be supplied from a primary side hot water channel 21 to a secondary side hot water channel 23 at the same time and stops the supply of the water and the hot water in accordance with the setting by a flow control handle 15. A temperature control valve unit 19 mixes the water supplied from the secondary side water channel 22 and the hot water supplied from the secondary side hot water channel 23 and automatically controls the rate of water/hot water to be mixed in accordance with the temperature of the mixed hot water and the setting by a temperature control handle 16. The temperature control valve unit 19 has a temperature sensitive spring 46 formed of a shape memory alloy for energizing a valve element 42 to the side of a hot water side valve seat and bias springs 47, 48 for energizing the valve element 42 to the side of a water side valve seat. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a hot and cold water mixing tap with automatic temperature control.

Conventionally, as this kind of hot and cold water mixing tap, there are those described in Patent Documents 1 and 2, for example.
The mixing plug described in Patent Document 1 is configured as shown in FIG. When the mixing stopper is switched from the water stop state to the water discharge state, the flow rate adjustment / water stop valve body 100 and the temperature adjustment valve body 101 are both temperature sensitive media (wax) based on the operation of a flow rate / water stop handle (not shown). The thermo valve 102 is moved to the opposite side (rightward in FIG. 21), and the hot water side port 103 and the water side port 104 are both opened from the closed state. Then, hot water and water enter the working chamber 105 from the hot water side port 103 and the water side port 104, respectively, and both are mixed in the working chamber 105 to form hot water. The mixed hot water flows from the working chamber 105 to the circulation chamber 106 and is supplied from the circulation chamber 106 to a spout or a shower head (not shown). At this time, the temperature-sensitive medium 102 expands and contracts according to the temperature of the hot water in the working chamber 105, and the temperature adjusting valve body 101 is displaced. For example, when the amount of hot water supplied to the mixing plug decreases due to the use of hot water in another mixing plug, for example, the temperature sensitive medium 102 shrinks in response to a decrease in the temperature of the hot water in the working chamber 105, and is used for temperature adjustment. The valve body 101 is displaced to the temperature sensitive medium 102 side. Thereby, the flow rate of the water flowing into the working chamber 105 from the water side port 104 is reduced, and the temperature drop of the hot water in the working chamber 105 is suppressed.

  On the contrary, when switching from the water discharge state to the water stop state, both the flow rate adjustment / water stop valve body 100 and the temperature adjustment valve body 101 are moved to the temperature sensitive medium 102 side based on the operation of the flow rate / water stop handle. Both the hot water side port 103 and the water side port 104 are closed. Then, the inflow of hot water and water from the hot water side port 103 and the water side port 104 to the working chamber 105 is stopped. At this time, since both the flow rate adjusting / water stopping valve body 100 and the temperature adjusting valve body 101 are moved to the temperature sensitive medium 102 side, the temperature sensitive medium 102 is forcibly contracted. Therefore, in this mixing plug, the ratio of mixing hot water and water is adjusted by the temperature sensitive medium 102 formed of a wax thermo valve. Further, in this mixing plug, the water supplied from the water supply pipe and the hot water supplied from the hot water supply pipe are stopped separately before being mixed in the working chamber 105.

In the mixing tap described in Patent Document 2, water supplied from the water supply pipe and hot water supplied from the hot water supply pipe are first mixed in the temperature control module on the upstream side, and the temperature is adjusted in the temperature control module. Hot water is supplied to the downstream control valve module. In the temperature control module, the temperature of the hot water is adjusted by a balance between a temperature-sensitive spring made of a shape memory alloy and a bias spring arranged so as to face the temperature-sensitive spring. In the control valve module, the water discharge destination of the hot water supplied from the temperature control module is switched to either the spout or the shower head, and the water discharge flow rate is adjusted. Therefore, in this mixing plug, hot water mixed in the temperature control module is stopped by the control valve module.
Japanese Patent Publication No. 61-49545 JP 2000-355963 A

  Incidentally, the wax thermo valve used in the mixing plug of Patent Document 1 is inferior in responsiveness to a temperature change as compared to the shape memory alloy temperature-sensitive spring used in the mixing plug of Patent Document 2. . For this reason, for example, even if the amount of hot water supplied to the mixing plug decreases and the temperature of the hot water in the working chamber 105 decreases, the temperature sensitive medium 102 does not shrink immediately, and the flow rate of water flowing into the working chamber 105 is immediately reduced. Can not be reduced. For this reason, the temperature of the hot water discharged to the outside tends to be temporarily lowered from the set temperature.

  Moreover, in the mixing tap of patent document 2, the hot water mixed in the temperature control module is stopped by the control valve module. For this reason, in the water stop state, the water supply pipe and the hot water supply pipe are connected via the mixing plug. As a result, when the water pressure in the hot water supply pipe is higher than the hot water pressure in the hot water supply pipe, water flows backward from the water supply pipe to the hot water supply pipe through the mixing plug, and abnormally occurs in the water heater to which the hot water supply pipe is connected. High pressure may be applied. On the other hand, the water stop in the mixing plug of Patent Document 1 is performed by separately stopping the water supplied from the water supply pipe and the hot water supplied from the hot water supply pipe before being mixed. For this reason, even in the water stop state, the water supply pipe and the hot water supply pipe are not connected, and water does not flow backward from the water supply pipe to the hot water supply pipe.

  Therefore, in order to solve both of these problems, it is conceivable to use a temperature-sensitive spring made of a shape memory alloy in place of the wax thermo valve in the mixing plug of Patent Document 1. However, in the mixing tap of Patent Document 1, the flow rate / water stop valve body 100 and the temperature control valve body 101 are moved by operating the flow rate / water stop handle every time the water stop / water discharge is switched and the temperature is sensed. The spring is forced to expand and contract. However, it is known that a temperature sensitive spring made of a shape memory alloy is inferior in durability due to repeated expansion and contraction. In particular, when the temperature of hot water to be discharged is set to the high temperature side, the temperature-sensitive spring is in a more compressed state, so that a larger load is applied to the temperature-sensitive spring when the water stops, and its life May be shortened.

  The present invention has been made paying attention to such problems existing in the prior art. The purpose is that the water supply pipe connected to the mixing tap and the hot water supply pipe do not communicate with each other in the water-stopped state, and the temperature of the hot water discharged is less likely to change from the set temperature and has excellent durability. Another object of the present invention is to provide a hot and cold water mixing tap.

  In order to achieve the above object, according to the first aspect of the present invention, each flow rate of water and hot water supplied from the outside can be adjusted at the same time according to the flow rate setting by the flow rate adjustment handle. The flow rate adjusting means capable of stopping both supply and water and hot water supplied from the flow rate adjusting means are mixed, and the temperature of the mixed hot water and the temperature setting by the temperature adjusting handle are mixed. And a temperature adjusting means for automatically adjusting the ratio of water to hot water to be mixed and adjusting the temperature of the mixed hot water to a set temperature by a temperature adjusting handle, and the temperature adjusting means is provided in the valve body. A water side valve seat and a hot water side valve seat provided in the valve body, a valve body which is held in the valve body so as to be displaceable in the axial direction thereof, and which can be contacted and separated from each valve seat, and the valve body is connected to the hot water side valve. Shapes that urge in the direction of approaching the seat A temperature-sensitive spring made of material, a bias spring that urges the valve body in a direction approaching the water-side valve seat, and the water temperature is set by displacing the valve body via the temperature-sensitive spring or the bias spring. It comprises a water discharge temperature setting means.

  According to a second aspect of the present invention, in addition to the first aspect of the invention, the flow rate adjusting means is the same as a cylindrical outer case body that is non-rotatably disposed in the hole in the faucet body. A cylindrical inner case body arranged in a rotatable state in the outer case body, the inner case body is closed at one end and opened at the other end, and the inside is the same in the axial direction. A first opening that communicates with the primary side water channel, a second opening that communicates with the secondary side water channel, and a primary side hot water that is partitioned into one end side and the other end side, A third opening that communicates with the road is provided, and a water inlet that allows communication with the first opening and a water outlet that allows communication with the second opening are provided on the peripheral wall at one end of the inner case body. Provided on the peripheral wall on the other end side of the inner case body. A hot water inlet that can communicate with the mouth is provided, the other end side opening of the inner case body is a hot water outlet that communicates with the hot water inlet, and the inner case body is used for flow rate adjustment by the flow rate adjusting handle. When the rotation and the communication of the water inlet with respect to the first opening is interrupted, the communication of the hot water inlet with respect to the third opening is interrupted to stop both the supply of water and hot water, and the first opening When the water inlet is communicated with the water inlet, water and hot water are both supplied by communicating the hot water inlet with the third opening.

  According to a third aspect of the present invention, there is provided a flow rate adjusting means which can be supplied by adjusting the flow rate of water or hot water supplied from the outside according to the flow rate setting by the flow rate adjusting handle, and can stop the supply. And water or hot water supplied from the same flow rate adjusting means and hot water or water supplied from the outside are mixed and mixed according to the temperature of the mixed hot water and the temperature setting by the temperature adjustment handle. It comprises temperature adjusting means that automatically adjusts the ratio of water and hot water and adjusts the temperature of the mixed hot and cold water to a set temperature by the temperature adjusting handle, and the flow rate adjusting means sets the flow rate by the flow rate adjusting handle. Depending on the flow rate, the flow rate of hot water supplied from the temperature adjusting means can be adjusted simultaneously with the flow rate of water or hot water supplied from the outside, respectively, and both supply can be stopped. The temperature adjusting means is provided with a water side valve seat and a hot water side valve seat provided in the valve body, and is held in the valve body so as to be displaceable in the axial direction and connectable to each valve seat. A temperature sensing spring made of a shape memory material that urges the valve body in a direction approaching the hot water valve seat; a bias spring that urges the valve body in a direction approaching the water side valve seat; It comprises discharge water temperature setting means for setting the discharge water temperature by displacing the valve body via the same temperature sensitive spring or the same bias spring.

  According to a fourth aspect of the present invention, in addition to the third aspect of the present invention, the flow rate adjusting means sets the supply destination of hot water supplied from the temperature adjusting means based on the setting by the flow rate adjusting handle to the spout side. Or it switches to the shower head side, It is characterized by the above-mentioned.

  The invention according to claim 5 is, in addition to the invention according to any one of claims 1 to 4, a water-side crank tube for supplying water and a hot water side for supplying hot water. A horizontally-long faucet body connected to the crank tube is provided, and the flow rate adjustment handle and the temperature adjustment handle are provided at both ends of the faucet body, and their respective rotation axes are arranged on the same axis. It is characterized by.

(Function)
In the first and second aspects of the present invention, the flow rate of the water and hot water supplied to the mixing plug from the outside is first adjusted at the same time by the flow rate adjusting means and the supply of both is stopped. Then, the water and hot water whose flow rates are adjusted by the flow rate adjusting means are mixed in the temperature adjusting means. Therefore, the water channel and the hot water channel from the outside are not connected via the mixing plug in the water stop state. Further, the ratio of the water and hot water introduced into the temperature adjusting means is automatically adjusted based on the operation of a temperature-sensitive spring which is made of a shape memory alloy and operates according to the temperature of the mixed hot water. Therefore, when the flow rate of water or hot water supplied from the outside fluctuates in the water discharged from the mixing tap, the temperature of the mixed hot water changes more quickly than the configuration using the wax thermo valve. It is suppressed. In addition, since the flow rate adjustment means for switching off and discharging hot water and the temperature adjustment means for adjusting the temperature of hot water are separate, the temperature-sensitive spring is forcibly expanded and contracted when switching between water discharge and water discharge. It will not be done. For this reason, the durability fall of a temperature-sensitive spring is suppressed.

  In the invention according to claim 3, the flow rate of the water or hot water supplied to the mixing plug from the outside is first adjusted by the flow rate adjusting means and the supply is stopped. Then, water or hot water whose flow rate is adjusted by the flow rate adjusting means and hot water or water supplied from the outside are mixed in the temperature setting means. Further, the flow rate of the hot and cold water mixed by the temperature setting means is adjusted by the flow rate adjusting means, and the supply to the spout and the shower head is stopped. Therefore, in the water stop state by the flow rate adjusting means, communication between the water supply pipe and the hot water supply pipe connected to the mixing plug from the outside is blocked. Further, the ratio of the water and hot water introduced into the temperature adjusting means is automatically adjusted based on the operation of a temperature-sensitive spring which is made of a shape memory alloy and operates according to the temperature of the mixed hot water. Therefore, when the flow rate of water or hot water supplied from the outside fluctuates in the water discharged from the mixing tap, the temperature of the mixed hot water changes more quickly than the configuration using the wax thermo valve. It is suppressed. In addition, the flow rate adjusting means for switching off and discharging the hot water and the temperature adjusting means for adjusting the temperature of the hot water are separate, so the temperature-sensitive spring is forcibly expanded and contracted when switching between water discharge and water discharge. It will not be done. For this reason, the durability fall of a temperature-sensitive spring is suppressed.

  In the fourth aspect of the present invention, the destination for discharging hot water can be switched by a spout or a shower head by an operation on the flow rate adjusting handle for adjusting the flow rate of hot water discharged from the mixing tap. Therefore, usability for the user is improved.

  In the invention according to claim 5, the entire faucet is small.

  According to the present invention, since the water supply pipe and the hot water supply pipe connected to the mixing plug can be separated in the water stop state, the water supply pipe and the hot water supply pipe can be prevented from communicating with each other in the water stop state. . In addition, a temperature-sensitive spring made of a shape memory alloy is operated according to the temperature of the mixed hot and cold water, and the ratio of mixing hot water and water is adjusted by this operation to maintain the hot and cold water at a set temperature. Even if the flow rate of the water or hot water supplied to the stopper fluctuates, the temperature of the hot water discharged is unlikely to fluctuate from the set temperature. Furthermore, since the temperature-sensitive spring is not forcibly expanded or contracted at the time of switching between water stop and water discharge, a decrease in durability of the temperature-sensitive spring made of shape memory alloy is suppressed.

(First embodiment)
Next, a first embodiment embodying the present invention will be described with reference to FIGS.
As shown in FIG. 1, an automatic temperature control type hot and cold water mixing tap (hereinafter simply referred to as a mixing tap) 10 of this embodiment is installed on a wall surface of a bathroom via a water side crank tube 11R and a hot water side crank tube 11L. Is done. Water is supplied to the mixing plug 10 from a water supply pipe (not shown) via a water-side crank pipe 11R, and hot water is supplied from a water supply pipe (not shown) via a hot water-side crank pipe 11L. The mixing plug 10 mixes the supplied water and hot water to generate hot water, and supplies the hot water from the spout 12 or the shower head 13 to the bathroom.

  As shown in FIGS. 1, 2, and 3, the mixing plug 10 includes a horizontally-long faucet body 14 to which both crank pipes 11 </ b> R and 11 </ b> L are connected and supported by both crank pipes 11 </ b> R and 11 </ b> L. . At the right end of the faucet body 14 in the longitudinal direction, a flow rate adjustment handle 15 that is turned to set the flow rate is provided, and at the left end, a temperature adjustment handle 16 that is turned to set the temperature is provided. It has been. The rotation axes of the flow rate adjustment handle 15 and the temperature adjustment handle 16 are arranged on the same axis. In addition, a switching handle 17 is provided at the front center of the faucet body 14 for switching the hot water supply side between the spout 12 and the shower head 13.

  As shown in FIGS. 2 and 3, the right portion inside the faucet main body 14 includes adjustment of the flow rate of hot water supplied from the spout 12 or the shower head 13 based on the flow rate setting by the flow rate adjustment handle 15, and hot water. A flow rate adjusting unit 18 is provided as a flow rate adjusting means for supplying or stopping supply. The flow rate adjusting unit 18 is mounted in a cylindrical hole that extends in the axial direction inside the faucet body 14 and opens at the right end thereof. A temperature adjustment valve as a temperature adjustment means for adjusting the temperature of hot water supplied from the spout 12 or the shower head 13 based on the temperature setting by the temperature adjustment handle 16 is provided in the left part of the faucet body 14. A unit 19 is provided. The temperature control valve unit 19 is mounted in a cylindrical hole that extends in the axial direction of the faucet body 14 and opens at the left end thereof.

  As shown in FIGS. 2 and 3, the faucet body 14 includes a primary side water passage 20 extending from the water side crank tube 11 </ b> R and a primary side water passage 21 extending from the hot water side crank tube 11 </ b> L. Is provided. In addition, a secondary side water passage 22 and a secondary side hot water passage 23 extending from the flow rate adjustment unit 18 side to the temperature adjustment valve unit 19 side are respectively provided in the faucet body 14.

Next, the flow rate adjusting unit 18 will be described.
As shown in FIGS. 4 and 5, the flow rate adjustment unit 18 includes a substantially cylindrical first case body 24, and a substantially annular second case body coupled to an end portion of the first case body 24 by screwing. 25, and a plug rod 26 that is rotatably held in the coupled first case body 24 and second case body 25. The stopper rod 26 is integrated with the valve cylinder portion 27 in a state in which one end of the valve cylinder portion 27 is closed, and a second cylindrical tube cylinder portion 27 disposed inside the first case body 24. And a shaft portion 28 inserted through the case body 25. The flow rate adjusting unit 18 is fixed in the axial direction and the rotational direction in the hole of the faucet body 14 by a fastening nut 29 that is screwed to the inner peripheral edge of the opening of the right side hole of the faucet body 14. The shaft portion 28 is inserted through a tightening nut 29 and extends from the right end of the faucet body 14 to the outside, and the flow rate adjusting handle 15 is attached to the end portion. Accordingly, in the flow rate adjustment unit 18, the plug bar 26 rotates relative to the first case body 24 and the second case body 25 based on the rotation operation with respect to the flow rate adjustment handle 15.

  As shown in FIGS. 5 and 6, a first opening 24 a that can communicate with the primary water channel 20 and a second opening that can communicate with the secondary water channel 22 are formed in the peripheral wall of the first case body 24. 24b and a third opening 24c that can communicate with the primary side hot water passage 21 are provided. As shown in FIGS. 4, 5, and 6, the inside of the valve tube portion 27 of the plug rod 26 is partitioned into two regions in the axial direction, and the peripheral wall of the valve tube portion 27 in the region on the shaft portion 28 side. Are provided with a water inlet 27a capable of communicating with the first opening 24a of the first case body 24 and a water outlet 27b capable of communicating with the second opening 24b. In addition, a hot water inlet 27 c that can communicate with the third opening 24 c is provided on the peripheral wall of the valve cylinder portion 27 in a region opposite to the shaft portion 28. Further, the region on the opposite side of the shaft portion 28 inside the valve cylinder portion 27 is always communicated with the secondary side hot water passage 23 through a hot water outlet 27 d opened at the end portion of the valve cylinder portion 27.

  As shown in FIGS. 4, 5, and 6, the first opening 24 a of the first case body 24 and the water inlet 27 a of the plug bar 26 are the inner peripheral surface of the first case body 24 and the outer peripheral surface of the plug bar 26. Are communicated in a watertight state by a water-side packing 30 provided therebetween. Further, the third opening 24c of the first case body 24 and the hot water inlet 27c of the stopper rod 26 are communicated with each other in a watertight manner by the hot water side packing 31.

  Then, as shown in FIG. 7, the position of the plug bar 26 in the rotation direction with respect to the first case body 24 and the second case body 25 is adjusted by the rotation operation of the flow rate adjusting handle 15, and the plug bar 26 (valve cylinder) The communication between the water inlet 27a of the portion 27) and the first opening 24a of the first case body 24 is blocked. At this time, the communication between the hot water inlet 27c of the stopper rod 26 and the third opening 24c of the first case body 24 is also blocked. Therefore, when the communication between the primary side water channel 20 and the secondary side water channel 22 is blocked, the communication between the primary side water channel 21 and the secondary side water channel 23 is also blocked.

  Further, as shown in FIG. 8, the position of the plug bar 26 in the rotation direction with respect to the first case body 24 and the second case body 25 is adjusted by the rotation operation of the flow rate adjusting handle 15, and the water inlet of the plug bar 26 27a and the first opening 24a of the first case body 24 communicate with each other with the largest flow path cross-sectional area. At this time, the hot water inlet 27c of the plug rod 26 and the third opening 24c of the first case body 24 are communicated with each other with a maximum flow path cross-sectional area. Accordingly, when the primary side water channel 20 and the secondary side water channel 22 communicate with each other with the maximum flow path cross-sectional area, the primary side water channel 21 and the secondary side water channel 23 communicate with each other with the maximum channel cross-sectional area. Is done.

  Further, by adjusting the position of the plug rod 26 in the rotational direction with respect to the first case body 24 and the second case body 25, the cross-sectional area of the flow path that connects the primary side water path 20 and the secondary side water path 22. And the cross-sectional area of the flow path which connects the primary side hot water path 21 and the secondary side hot water path 23 is adjusted simultaneously.

Next, the temperature control valve unit 19 will be described.
As shown in FIGS. 9, 10, and 11, the temperature control valve unit 19 includes a substantially cylindrical first valve body 32 and a substantially cylindrical shape that is coupled to an end of the first valve body 32 by screwing. The second valve body 33 is provided. The temperature control valve unit 19 is axially rotated and rotated in the hole portion of the faucet body 14 by a tightening nut 34 (shown in FIGS. 2 and 3) that is screwed into the inner peripheral edge portion of the hole portion of the faucet body 14. It is fixed to. In this embodiment, the 1st valve body 32 and the 2nd valve body 33 comprise a valve body.

  The peripheral wall of the first valve body 32 is provided with a water side port 35 that is always in communication with the secondary side water passage 22 and a hot water side port 36 that is always in communication with the secondary side hot water passage 23. Further, at the end of the first valve body 32, a water discharge port 38 that is always in communication with a mixing channel 37 (shown in FIGS. 2 and 3) provided in the faucet body 14 is provided. The mixing channel 37 is communicated with the spout 12 or the shower head 13 via a water discharge switching unit described later.

  Inside the first valve body 32, a water side valve seat 39 corresponding to the water side port 35 is provided. In addition, a cylindrical member 40 that faces the water-side valve seat 39 is disposed inside the connection portion of the first valve body 32 and the second valve body 33. The tubular member 40 is clamped in the axial direction by both valve bodies 32 and 33 and is fixed in the both valve bodies 32 and 33. On the end surface of the tubular member 40 on the first valve body 32 side, a hot water side valve seat 41 corresponding to the hot water side port 36 is provided.

  Between the water side valve seat 39 and the hot water side valve seat 41 inside the first valve body 32, the inside of the first valve body 32 is arranged in the axial direction between the water side valve seat 39 side and the hot water side valve seat 41 side. A valve element 42 that is partitioned into two and movable in the axial direction is disposed. The valve body 42 can contact and separate from the water side valve seat 39 or the hot water side valve seat 41. Further, the valve body 42 is provided with a hot water supply hole 43 penetrating in the axial direction thereof, and the hot water supply hole 43 allows the water side valve seat 39 side and the hot water side valve seat 41 side to be located inside the first valve body 32. Are always in communication.

  A hot water mixing chamber 44 communicating with the water discharge port 38 is provided on the side of the water side valve seat 39 partitioned by the valve body 42 inside the first valve body 32. The water-side port 35 communicates with the hot and cold mixing chamber 44 through a plurality of water supply ports 45 provided in the valve body 42.

  A coil spring-like temperature sensitive spring 46 made of a shape memory alloy is disposed in the hot / cold water mixing chamber 44. The temperature-sensitive spring 46 is interposed between the end surface of the valve body 42 and the end portion of the first valve body 32, and urges the valve body 42 to contact the hot water side valve seat 41.

  On the other hand, a coil spring-shaped first bias spring 47 and a second bias spring 48 having the same coil shape and disposed inside the first bias spring 47 are disposed inside the cylindrical member 40. ing. Both bias springs 47, 48 are joined and arranged via a receiving plate 49 to the end surface of the valve element 42 on the hot water side valve seat 41 side. The inner diameter and length of the first bias spring 47 are made larger than the inner diameter and length of the second bias spring 48, respectively. In this embodiment, the first bias spring 47 and the second bias spring 48 constitute a bias spring.

  Inside the second valve body 33, there is provided a water discharge temperature setting mechanism 50 as water discharge temperature setting means for adjusting and setting the water discharge temperature by displacing the valve body via both bias springs 47 and 48. The water discharge temperature setting mechanism 50 is supported inside the second valve body 33 and is inserted through the tightening nut 34 so as to extend from the end opening of the second valve body 33 to the left outer side of the faucet body 14. A spindle 51 and a feed member 52 screwed into the end of the operation spindle 51 inside the second valve body 33 are provided. The operation spindle 51 is supported so as not to move in the axial direction relative to the second valve body 33 and to be rotatable relative to the second valve body 33. The temperature adjusting handle 16 (see FIGS. 3) is attached. The feed member 52 is held in a non-rotatable manner inside the second valve body 33 and is displaced in the axial direction in the second valve body 33 as the operation spindle 51 rotates. Therefore, in the temperature control valve unit 19, the feed member 52 is displaced in the axial direction with respect to the first valve body 32 and the second valve body 33 based on the turning operation with respect to the temperature control handle 16.

  A spring pushing member 53 that can be brought into contact with and separated from the end edges of both the bias springs 47 and 48 is fitted to the end edge of the feed member 52 on the valve body 42 side. A cylindrical positioning wall 53a is provided at the end of the spring pushing member 53 on the valve body 42 side, and the inner peripheral side of the positioning wall 53a is opposite to the valve body 42 side of the first bias spring 47. The end on the side is inserted. Further, a substantially conical holding portion 53b is formed to project from the center of the end surface of the feed member 52 on the valve body 42 side, and this holding portion 53b is an end portion of the second bias spring 48 opposite to the valve body 42 side. Has been inserted.

  The end of the first bias spring 47 on the valve body 42 side is held by the inner peripheral surface of the tubular member 40. Further, the end of the second bias spring 48 on the valve body 42 side is held by the outer peripheral surface of a positioning shaft portion 42 a formed to project from the center of the end surface of the valve body 42 on the tubular member 40 side. Therefore, both bias springs 47 and 48 are positioned in parallel on the axis of both valve bodies 32 and 33.

  In the lower part of the faucet body 14, the water discharge switching portion (not shown) with which the mixing channel 37 communicates is provided. The water discharge switching unit has a known configuration, and switches the supply destination of hot water supplied from the mixing flow path 37 between the spout 12 side and the shower head 13 side based on a switching operation to the switching handle 17.

Next, the operation of the mixing plug 10 configured as described above will be described.
First, the operation of the flow rate adjustment unit 18 based on the operation of the flow rate adjustment handle 15 will be described.

  When hot water is not discharged from the spout 12 and the shower head 13, the flow rate adjustment handle 15 is set to a predetermined water stop position. Then, as shown in FIG. 7, in the flow rate adjustment unit 18, the communication between the first opening 24 a of the first case body 24 and the water inlet 27 a of the valve cylinder portion 27 is blocked, and similarly, the third opening 24 c and the hot water are connected. Communication with the inlet 27c is blocked. For this reason, the communication between the primary-side water channel 20 and the secondary-side water channel 22 and the communication between the primary-side water channel 21 and the secondary-side water channel 23 are both cut off, and the water to the temperature control valve unit 19 and Hot water supply is stopped. Accordingly, since the water and hot water before being supplied to the temperature control valve unit 19 are stopped separately by the flow rate control unit 18, the hot water mixed in the temperature control valve unit 19 is temporarily stopped. Unlike the case, the water supply pipe and the hot water supply pipe are not connected through the mixing plug 10 in the water stop state. For this reason, in the water stoppage state, water having a pressure higher than that of hot water does not flow backward from the water supply pipe to the hot water supply side through the mixing plug 10 and the hot water supply pipe, and no abnormal water pressure is applied to the water heater.

  When hot water is discharged from the spout 12 or the shower head 13 at the maximum flow rate, the flow rate adjustment handle 15 is set to a predetermined position corresponding to the maximum water discharge. Then, as shown in FIG. 8, in the flow rate adjustment unit 18, the first opening 24 a of the first case body 24 and the water inlet 27 a of the valve cylinder portion 27 are communicated with each other at the maximum flow path cross-sectional area. The opening 24c and the hot water inlet 27c communicate with each other with a maximum flow path cross-sectional area. For this reason, the primary side water channel 20, the secondary side water channel 22, the primary side hot water channel 21, and the secondary side hot water channel 23 communicate with each other with the maximum flow channel cross-sectional area, and the temperature control valve is connected from the flow rate control unit 18. Water and hot water are respectively supplied to the unit 19 at a maximum flow rate.

  Further, when hot water is discharged from the spout 12 or the shower head 13 at a predetermined flow rate smaller than the maximum flow rate, the flow rate adjustment handle 15 is set to a predetermined position corresponding to the predetermined flow rate. Then, in the flow rate adjusting unit 18, the first opening 24a of the first case body 24 and the water inlet 27a of the valve cylinder portion 27 are communicated with each other with a predetermined flow path cross-sectional area, and similarly, the third opening 24c and the hot water inlet 27c. Are communicated with each other with a predetermined flow path cross-sectional area. For this reason, the primary side water channel 20, the secondary side water channel 22, the primary side hot water channel 21, and the secondary side hot water channel 23 are communicated with each other with a predetermined channel cross-sectional area, and the temperature control valve is connected from the flow rate control unit 18. Water and hot water are respectively supplied to the unit 19 at a predetermined flow rate.

(Temperature control)
Next, the operation of the temperature control valve unit 19 based on the operation of the temperature control handle 16 will be described.

  FIG. 9 shows a state in which the temperature adjustment handle 16 is rotated and adjusted to a low temperature range lower than 30 ° C., for example. In this state, in the water discharge temperature setting mechanism 50, the spring pressing member 53 is disposed at a position away from the valve body 42 by the feed member 52, and the end surface of the spring pressing member 53 on the valve body 42 side is the edge of the first bias spring 47. The state is separated from the end. At this time, the valve body 42 is moved to the spring pushing member 53 side by the urging force of the temperature-sensitive spring 46, and is disposed at a position that is separated from the water side valve seat 39 and abuts on the hot water side valve seat 41. For this reason, the secondary water channel 22 is communicated with the hot water mixing chamber 44 only through the water port 35. Further, in this state, both bias springs 47 and 48 are in a non-accumulation state and do not exert a biasing force on the valve body 42. Accordingly, in this low temperature range, only water is discharged from the spout 12 or the shower head 13 regardless of the adjustment position of the temperature adjustment handle 16.

  FIG. 10 shows a state in which the temperature adjustment handle 16 is rotated and adjusted to an intermediate temperature range of 30 to 50 ° C., for example. In this state, in the water discharge temperature setting mechanism 50, the spring pushing member 53 is arranged at a position approaching the valve body 42 side by the feed member 52, and the end face of the spring pushing member 53 on the valve body 42 side is the first bias spring 47. It is in contact with the edge and not in contact with the edge of the second bias spring 48. At this time, the valve body 42 is held at a position separated from both the water side valve seat 39 and the hot water side valve seat 41 by the balance between the urging force of the temperature sensitive spring 46 and the urging force of the first bias spring 47. . In this state, the second bias spring 48 is in a non-accumulation state and does not exert a biasing force on the valve body 42. For this reason, the secondary water channel 22 communicates with the hot water mixing chamber 44 via the water side port 35 and the secondary side water channel 23 communicates with the hot water side port 36. Then, the water supplied from the secondary side water passage 22 and the hot water supplied from the secondary side hot water passage 23 are mixed in the hot water mixing chamber 44. For this reason, the temperature-sensitive spring 46 changes the spring constant according to the temperature of the hot water mixed in the hot water mixing chamber 44. Then, the valve body 42 is disposed at a position where the biasing force of the temperature-sensitive spring 46 corresponding to the temperature of the hot water in the hot water mixing chamber 44 and the biasing force of the first bias spring 47 are balanced. Accordingly, in the middle temperature range, hot water having a temperature corresponding to the adjustment position of the temperature adjustment handle 16 is discharged from the spout 12 or the shower head 13.

  Further, when the temperature adjustment handle 16 is rotated and adjusted to a higher temperature in this intermediate temperature range, the spring pushing member 53 is disposed closer to the valve body 42 by the feed member 52 of the water discharge temperature setting mechanism 50. For this reason, the urging force applied to the valve body 42 from the first bias spring 47 is increased, and the valve body 42 is disposed at a position closer to the water-side valve seat 39. As a result, the cross-sectional area of the flow path from the water side port 35 to the hot water mixing chamber 44 is reduced, and the cross sectional area of the flow path from the hot water side port 36 to the hot water mixing chamber 44 is increased. For this reason, while the flow volume of the water supplied to the hot water mixing chamber 44 decreases, the flow volume of hot water increases, and the temperature of the hot water discharged from the spout 12 or the shower head 13 increases. Accordingly, in this intermediate temperature range, the amount of displacement of the valve element 42 with respect to the amount of change in the rotational operation angle of the temperature adjustment handle 16 is small. Become. For this reason, the temperature of the hot water discharged from the spout 12 or the shower head 13 can be finely adjusted by the user in an intermediate temperature range frequently used by the user.

  If hot water is used, for example, by a faucet different from the mixing tap 10 in the middle temperature range, the flow rate of hot water supplied from the hot water supply pipe to the primary side hot water passage 21 decreases. For this reason, the flow rate of hot water supplied from the secondary side hot water passage 23 to the hot water mixing chamber 44 decreases, and the temperature of the hot water in the hot water mixing chamber 44 decreases. Then, the spring constant of the temperature sensing spring 46 is lowered, the urging force applied from the temperature sensing spring 46 to the valve body 42 is reduced, and the valve body 42 is displaced to the water side valve seat 39 side. For this reason, the flow rate of water supplied from the secondary side water passage 22 to the hot water mixing chamber 44 decreases and the flow rate of hot water supplied from the secondary side hot water passage 23 to the hot water mixing chamber 44 increases. The decrease in the temperature of the hot water produced in is suppressed. Accordingly, even if hot water is used by another faucet during spitting, the temperature of the hot water discharged from the spout 12 or the shower head 13 is increased by the operation of the temperature-sensitive spring 46 having a higher response than the wax thermo valve. It is difficult to drop from the set temperature.

  In addition, when the use of hot water in another faucet stops, the flow rate of hot water supplied from the hot water supply pipe to the primary side hot water passage increases. For this reason, the flow rate of hot water supplied from the secondary side hot water passage to the hot water mixing chamber 44 increases, and the temperature of the hot water in the hot water mixing chamber 44 rises. Then, the spring constant of the temperature sensing spring 46 is increased, and the urging force applied from the temperature sensing spring 46 to the valve body 42 is increased, and the valve body 42 is displaced toward the hot water side valve seat 41 side. For this reason, the flow rate of the water supplied from the secondary side water channel 22 to the hot water mixing chamber 44 increases and the flow rate of the hot water supplied from the secondary side hot water channel 23 to the hot water mixing chamber 44 decreases. The rise in the temperature of the hot water produced in is suppressed. Therefore, even if the use of hot water at another faucet stops during water discharge, the temperature of the hot water discharged from the spout 12 or the shower head 13 does not easily rise from the set temperature.

  Furthermore, FIG. 11 shows a state in which the temperature adjustment handle 16 is rotated and adjusted to a high temperature range exceeding 50 ° C., for example. In this state, in the water discharge temperature setting mechanism 50, the spring pressing member 53 is disposed at a position closer to the valve body 42 side by the feeding member 52, and the end face of the spring pressing member 53 on the valve body 42 side is the first bias spring 47. In addition to the edge of the second bias spring 48, the edge of the second bias spring 48 is brought into contact. At this time, the valve body 42 is separated from the water side valve seat 39 and the hot water side valve seat 41 by the balance between the urging force of the temperature sensitive spring 46 and the urging forces of the first bias spring 47 and the second bias spring 48. Held in the position. For this reason, the secondary water channel 22 communicates with the hot water mixing chamber 44 via the water side port 35 and the secondary side water channel 23 communicates with the hot water side port 36. Then, the water introduced from the water side port 35 and the hot water introduced from the hot water side port 36 are mixed in the hot water mixing chamber 44. For this reason, the temperature-sensitive spring 46 changes the spring constant according to the temperature of the hot water mixed in the hot water mixing chamber 44. Then, the valve body 42 is disposed at a position where the urging force of the temperature-sensitive spring 46 corresponding to the temperature of the hot water and the urging force of the first bias spring 47 and the second bias spring 48 are balanced. Accordingly, in this high temperature range, similarly to the middle temperature range, hot water having a temperature corresponding to the adjustment position of the temperature adjustment handle 16 is discharged from the spout 12 or the shower head 13. Further, in this high temperature range, the displacement amount of the valve element 42 with respect to the change amount of the rotation operation angle of the temperature adjustment handle 16 is larger than that in the intermediate temperature range. The temperature change of becomes larger than the middle temperature range.

Next, the operation of the temperature sensitive spring 46 according to the operation of the flow rate adjusting handle 15 will be described.
When the temperature control valve unit 19 is set to the intermediate temperature range or the high temperature range, when the flow rate control handle 15 is switched from the water stop position to the water discharge position, the secondary side water channel 22 and the secondary side from the flow rate control unit 18 are switched. Water and hot water are supplied to the temperature control valve unit 19 through the hot water passage 23. The water and hot water supplied to the temperature control valve unit 19 are mixed in the hot water mixing chamber 44. At this time, the temperature-sensitive spring 46 expands and contracts according to the temperature of the hot and cold water generated in the hot and cold mixing chamber 44 and displaces the valve body 42.

  In addition, when the temperature adjustment handle 16 is rotated in the water discharge to change the set temperature or the flow rate of hot water supplied from the hot water supply pipe to the primary side hot water passage 21 is changed, The temperature of the hot water generated at 44 changes. At this time, the temperature-sensitive spring 46 expands and contracts according to the new temperature of the hot and cold water in the hot and cold mixing chamber 44 to displace the valve element 42. Further, when the flow rate adjustment handle 15 is switched from the water discharge position to the water stop position, the supply of hot water and water from the flow rate adjustment unit 18 to the temperature adjustment valve unit 19 is stopped. At this time, the temperature-sensitive spring 46 expands and contracts in response to a gradual temperature change of the hot water remaining in the hot water / mixing chamber 44 and displaces the valve element 42.

  Therefore, unlike the mixing plug described in Patent Document 1, the temperature sensing spring 46 of the temperature control valve unit 19 in this embodiment is forcibly expanded and contracted by an external force during water discharge and water stoppage. There is no. For this reason, since the temperature characteristic of the temperature sensitive spring 46 does not deteriorate early, the temperature adjustment function of the mixing plug 10 is not impaired.

(Second Embodiment)
Next, a second embodiment embodying the present invention will be described with reference to FIGS. In this embodiment, the flow rate adjustment unit 18 and the water discharge switching unit (not shown) in the first embodiment are used as the flow rate adjustment / water discharge switching unit 63, and the flow rate adjustment handle 15 is used as the flow rate adjustment / water discharge switching handle 62. Since only the replacement is different, the flow rate adjustment / water discharge switching unit 63 will be mainly described.

  As shown in FIGS. 12, 13, and 14, an automatic temperature control type hot and cold water mixing tap (hereinafter simply referred to as a mixing tap) 60 of this embodiment is provided with a flow rate adjusting handle at the right end in the longitudinal direction of a horizontally long faucet body 61. And the temperature adjustment handle 16 is also provided at the left end. The rotation axes of the flow rate adjustment / water discharge switching handle 62 and the temperature adjustment handle 16 are arranged on the same axis. Unlike the mixing plug 10 of the first embodiment, the mixing plug 60 does not include the switching handle 17.

  As shown in FIGS. 13 and 14, the right portion inside the faucet body 61 has a flow rate adjustment of hot water discharged from the spout 12 or the shower head 13 based on the operation of the flow rate adjustment / water discharge switching handle 62. A flow rate adjustment / water discharge switching unit 63 is provided as flow rate adjustment means for supplying and stopping hot water supply. The flow rate adjustment / water discharge switching unit 63 is configured to switch the side from which hot water is discharged to either the spout 12 or the shower head 13 based on an operation on the flow rate adjustment / water discharge switching handle 62. Like the flow rate adjustment unit 18 of the first embodiment, the flow rate adjustment / water discharge switching unit 63 is mounted in a cylindrical hole that extends in the axial direction inside the faucet body 61 and opens at the right end thereof. Yes. A temperature control valve unit 19 similar to that of the first embodiment is provided on the left portion inside the faucet body 61.

  13 and 14, a faucet body 61 is provided with a primary water channel 64 extending from the water side crank tube 11R and a water channel 65 extending from the hot water side crank tube 11L. Yes. In addition, a secondary side water channel 66 extending from the flow rate adjustment / water discharge switching unit 63 side to the temperature control valve unit 19 side is provided inside the faucet body 61. Furthermore, a spout side flow path 67 communicating with the spout 12 and a shower side flow path 68 communicating with the shower head 13 are provided inside the faucet body 61.

Next, the flow rate adjustment / water discharge switching unit 63 will be described.
As shown in FIGS. 15 and 16, the flow rate adjustment / water discharge switching unit 63 includes a substantially cylindrical first case body 70, and a substantially cylindrical first case body 70 coupled to the end portion of the first case body 70 by screwing. A two-case body 71 and a plug bar 72 held in a rotatable state within the combined first and second case bodies 70 and 71 are provided. The stopper rod 72 is integrated with the valve cylinder portion 73 in a state in which one end of the valve cylinder portion 73 is closed, and the second cylindrical portion 73 is disposed inside the first case body 70 and is closed. A shaft portion 74 inserted through the case body 71 is provided. The flow rate adjustment / water discharge switching unit 63 is fixed in the axial direction and the rotation direction in the hole portion of the faucet body 61 by a tightening nut 75 screwed to the inner peripheral edge of the opening portion of the hole portion of the faucet body 61. The shaft portion 74 is inserted through a tightening nut 75 and extends from the right end of the faucet body 61 to the outside, and the flow rate adjustment / water discharge switching handle 62 is attached to the end portion. Therefore, in the flow rate adjustment / water discharge switching unit 63, the stopper rod 72 rotates relative to the first case body 70 and the second case body 71 based on the rotation operation with respect to the flow rate adjustment / water discharge switching handle 62.

  As shown in FIGS. 16 and 17, a first opening 70 a that can communicate with the primary side water channel 64 and a second opening that can communicate with the secondary side water channel 66 are formed in the peripheral wall of the first case body 70. 70 b, a third opening 70 c that can communicate with the shower side flow path 68, and a fourth opening 70 d that can communicate with the spout side flow path 67 are provided.

  As shown in FIGS. 15, 16, and 17, the inside of the valve cylinder portion 73 in the plug rod 72 is partitioned in the axial direction, and the peripheral wall of the valve cylinder portion 73 in the region on the shaft portion 74 side is A pair of water inlets 73a capable of communicating with the first opening 70a of the one case body 70 and a pair of water outlets 73b capable of communicating with the second opening 70b are provided. Further, on the peripheral wall of the valve cylinder portion 73 in the region opposite to the shaft portion 74, a shower side opening 73c that can communicate with the third opening 70c, and a spout side opening 73d that can communicate with the fourth opening 70d, Is provided. Further, the region on the opposite side to the shaft portion 74 inside the valve cylinder portion 73 is always in communication with the water discharge port 38 of the temperature control valve unit 19 through the mixed water inlet 73e opened at the end of the valve cylinder portion 73. A water discharge switching chamber 76 is provided.

  As shown in FIGS. 15, 16, and 17, the first opening 70 a of the first case body 70 and the water inlets 73 a of the plug rod 72 (valve cylinder portion 73) are the inner peripheral surface of the first case body 70. And a water-side packing 77 provided between the outer peripheral surface of the plug bar 72 and the outer peripheral surface of the plug bar 72. Further, the third opening 70 c of the first case body 70 and the shower side opening 73 c of the plug bar 72, and the fourth opening 70 d of the first case body 70 and the spout side opening 73 d of the plug bar 72 are the first case body 70. The hot water side packing 78 provided between the inner peripheral surface and the outer peripheral surface of the stopper rod 72 communicates with each other in a watertight state.

  Then, as shown in FIG. 18, the position of the plug bar 72 in the rotation direction with respect to both case bodies 70, 71 is adjusted by the rotation operation of the flow rate adjustment / water discharge switching handle 62. Communication between the opening 70a and the water inlets 73a of the plug rod 72 is blocked. At this time, the communication between the third opening 70c of the first case body 70 and the shower side opening 73c of the plug bar 72 and the communication between the fourth opening 70d of the first case body 70 and the spout side opening 73d of the plug bar 72 are performed. Are cut off together. Therefore, when the communication between the primary side water channel 64 and the secondary side water channel 66 is blocked, the communication between the water outlet 38 of the temperature control valve unit 19 and the shower side channel 68 and the spout side channel 67 is blocked. The

  Further, as shown in FIG. 19, the position of the plug bar 72 in the rotation direction with respect to both case bodies 70, 71 is adjusted by the rotation operation of the flow rate adjustment / water discharge switching handle 62, and the first case body 70 has the first position. The opening 70 a communicates with one of the water inlets 73 a of the valve cylinder portion 73. At this time, the third opening 70c of the first case body 70 and the shower side opening 73c of the plug bar 72 communicate with each other, and the fourth opening 70d of the first case body 70 and the spout side opening 73d of the plug bar 72 communicate with each other. Blocked. Therefore, when the primary side water channel 64 and the secondary side water channel 66 are communicated with each other and when the water discharge port 38 of the temperature control valve unit 19 and the shower side flow channel 68 are communicated with each other, the water discharge port 38 and the spout side flow channel are connected. Communication with 67 is cut off.

  Furthermore, as shown in FIG. 20, the position of the plug bar 72 in the rotation direction with respect to both case bodies 70, 71 is adjusted by the rotation operation of the flow rate adjustment / water discharge switching handle 62. The opening 70 a communicates with the other of the water inlets 73 a of the valve cylinder portion 73. At this time, the communication between the third opening 70c of the first case body 70 and the shower side opening 73c of the plug bar 72 is blocked, and the fourth opening 70d of the first case body 70 and the spout side opening 73d of the plug bar are connected. Is done. Therefore, when the primary side water channel 64 and the secondary side water channel 66 are communicated with each other and when the water outlet 38 of the temperature control valve unit 19 and the spout side channel 67 are communicated, the water outlet 38 and the shower side channel are connected. Communication with 68 is blocked.

  Further, when the flow rate adjustment / water discharge switching handle 62 is rotated and the position of the stopper rod 72 in the rotation direction with respect to both the case bodies 70 and 71 is adjusted, the primary side water channel 64 and the secondary side water channel 66 The cross-sectional area of the flow path communicating with is adjusted. At this time, the water outlet 38 of the temperature control valve unit 19 and the spout side flow path 67 (or the shower side flow path 68) are provided along with the cross-sectional area of the flow path that connects the primary side water path 64 and the secondary side water path 66. The cross-sectional area of the communicating channel is adjusted at the same time.

  The temperature control valve unit 19 of this embodiment has the same configuration as the temperature control valve unit 19 of the first embodiment, but the hot water passage 65 is in direct communication with the hot water side port 36. Accordingly, the temperature control valve unit 19 generates hot water by mixing the water supplied from the flow rate adjustment / water discharge switching unit 63 and the hot water supplied from the hot water passage 65, and discharges water from the flow rate adjustment / water discharge switching unit 63. Supply to the switching chamber 76.

Next, the operation of the mixing plug 60 configured as described above will be described.
(Switching between water stop and water discharge)
When hot water is not discharged from the spout 12 or the shower head 13, the flow rate adjustment / discharge switching handle 62 is set to a predetermined water stop position. Then, as shown in FIG. 18, in the flow rate adjustment / water discharge switching unit 63, the communication between the first opening 70a of the first case body 70 and the water inlet 73a of the valve cylinder 73 is blocked, and the third opening 70c. And the communication between the shower side opening 73c and the communication between the fourth opening 70d and the spout side opening 73d are blocked. For this reason, the communication between the primary side water channel 64 and the secondary side water channel 66 is blocked, and the supply of water from the flow rate adjustment / water discharge switching unit 63 to the temperature adjustment valve unit 19 is stopped. Further, the supply of hot water supplied from the temperature control valve unit 19 to the water discharge switching chamber 76 to the shower head 13 and the spout 12 is stopped.

  Therefore, at the time of water stoppage, the flow rate / water discharge switching unit 63 stops the supply of water from the primary side water channel 64 to the secondary side water channel 66, and the temperature control valve unit 19 and the flow rate control / water discharge from the hot water channel 65. Supply of hot water to the spout side channel 67 or the shower side channel 68 via the switching unit 63 is stopped. For this reason, as in the first embodiment, since the primary water channel 64 and the hot water channel 65 are not connected in the water stop state, water having a pressure higher than that of hot water is supplied to the water supply pipe in the water stop state. Therefore, it does not flow back to the hot water supply side through the mixing plug 60 and the hot water supply pipe.

(When water is discharged from the shower head 13)
Further, when hot water is discharged from the shower head 13, the flow rate adjustment / water discharge switching handle 62 is switched from the water stop position to the shower position. Then, as shown in FIG. 16, in the flow rate adjustment / water discharge switching unit 63, the primary water channel 64 and the secondary water channel 66 communicate with each other, and the water discharge switching chamber 76 and the shower side channel 68 communicate with each other. The For this reason, hot water having a temperature adjusted in the temperature control valve unit 19 is discharged from the shower head 13 based on the adjustment position of the flow rate adjustment / water discharge switching handle 62.

(During water discharge from spout 12)
Further, when the hot water is discharged from the spout 12, the flow rate adjustment / water discharge switching handle 62 is switched from the water stop position to the spout 12 position. Then, in the flow rate adjustment / water discharge switching unit 63, the primary water channel 64 and the secondary water channel 66 are communicated with each other, and the water discharge switching chamber 76 and the spout channel 67 are communicated. For this reason, the hot water of the temperature adjusted in the temperature control valve unit 19 is discharged from the spout 12 based on the adjustment position of the flow rate adjustment / water discharge switching handle 62.

  Also in this embodiment described in detail above, when hot water is used by another mixing plug in the spout from the mixing plug 60 or when the use of hot water in the mixing plug 60 is stopped, the hot water mixing chamber The operation of the temperature-sensitive spring 46 based on the temperature change of the hot water in 44 suppresses the fluctuation of the temperature of the hot water discharged from the spout 12 or the shower head 13 from the set temperature. Therefore, as with the mixing plug 10 of the first embodiment, water is discharged from the spout 12 or the shower head 13 as compared with the mixing plug described in Patent Document 1 using a wax thermo valve instead of the temperature sensitive spring 46. Hot water temperature is less likely to fluctuate from the set temperature.

(Modification)
In addition, this embodiment can also be changed and embodied as follows.
In the first or second embodiment, the second bias spring 48 in the temperature control valve unit 19 is eliminated and only the first bias spring 47 is used.

  -In 1st Embodiment, in the temperature control valve unit 19, the position of the water side port 35 and the hot water side port 36 is replaced with the position of the secondary side water channel 22 and the secondary side hot water channel 23. FIG. Further, the positions of the temperature sensitive spring 46 and the first bias spring 47 and the second bias spring 48 are exchanged, and the position of the temperature sensitive spring 46 is adjusted by the water discharge temperature setting mechanism 50. Moreover, it is set as the same structure in 2nd Embodiment.

The perspective view which shows the mixing stopper of 1st Embodiment installed in the bathroom. The longitudinal cross-sectional view which shows a mixing stopper. The cross-sectional view which shows a mixing stopper. The cross-sectional view which shows a flow control unit. The longitudinal cross-sectional view which shows the flow volume adjustment unit. The disassembled perspective view which shows a flow volume adjustment unit. The cross-sectional view which shows the flow volume adjustment unit at the time of water stop. The cross-sectional view which shows the flow volume adjustment unit at the time of maximum water discharge. The longitudinal cross-sectional view which shows the temperature control valve unit set to the low temperature range. The longitudinal cross-sectional view which shows the temperature control valve unit set to the intermediate temperature range. The longitudinal cross-sectional view which shows the temperature control valve unit set to the high temperature range. The perspective view which shows the mixing stopper of 2nd Embodiment installed in the bathroom. The longitudinal cross-sectional view which shows a mixing stopper. The cross-sectional view which shows a mixing stopper. The longitudinal cross-sectional view which shows a flow volume adjustment and water discharge switching unit. The cross-sectional view which shows a flow volume adjustment and water discharge switching unit. The disassembled perspective view which shows a flow volume adjustment and water discharge switching unit. The cross-sectional view which shows the flow volume adjustment and water discharge switching unit at the time of water stop. The cross-sectional view which shows the flow volume adjustment and water discharge switching unit at the time of shower water discharge. The cross-sectional view which shows the flow volume adjustment and water discharge switching unit at the time of spout water discharge. The longitudinal cross-sectional view which shows the conventional mixing stopper.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 10 ... Automatic temperature control type hot and cold water mixing tap, 11L ... Hot water side crank tube, 11R ... Water side crank tube, 12 ... Spout, 13 ... Shower head, 14 ... Water faucet body, 15 ... Flow control handle, 16 ... Temperature control Handle: 18 ... Flow rate adjusting unit as flow rate adjusting means, 19 ... Temperature adjusting valve unit as temperature adjusting means, 20 ... Primary side water channel, 21 ... Primary side hot water channel, 22 ... Secondary side water channel, 24 ... Outer side 1st case body as a case body, 24a ... 1st opening, 24b ... 2nd opening, 24c ... 3rd opening, 27 ... Valve cylinder part as an inner side case body, 27a ... Water inlet, 27b ... Water outlet, 27c ... Hot water inlet, 27d ... Hot water outlet, 32 ... 1st valve body which comprises a valve body, 33 ... Similarly 2nd valve body, 39 ... Water side valve seat, 41 ... Hot water side valve seat, 42 ... Valve body, 46 ... Feeling Temperature spring, 47... First bar constituting the bias spring Asperal spring, 48 ... same second bias spring, 50 ... Water discharge temperature setting mechanism as water discharge temperature setting means, 61 ... Water faucet body, 62 ... Flow rate adjustment / water discharge switching handle as flow rate adjustment handle, 63 ... As flow rate adjustment means 64 ... primary side water channel, 65 ... hot water channel, 66 ... secondary side water channel, 70a ... first opening, 70b ... second opening, 70c ... third opening, 73a ... water inlet, 73b ... Water outlet.

Claims (5)

According to the flow rate setting by the flow rate adjustment handle, each flow rate of water and hot water supplied from the outside is adjusted at the same time and can be supplied respectively, and the flow rate adjusting means capable of stopping both supply,
Mixing water and hot water supplied from the same flow control means, automatically adjusting the ratio of water and hot water to be mixed according to the temperature of the mixed hot water and the temperature setting by the temperature control handle, and mixing Temperature adjusting means for adjusting and supplying the temperature of the hot and cold water to the set temperature by the temperature adjusting handle,
The temperature adjusting means includes a water side valve seat and a hot water side valve seat provided in the valve body, and a valve body that is held in the valve body so as to be displaceable in the axial direction and that can be contacted and separated from each valve seat. A temperature-sensitive spring made of a shape memory material that urges the valve body toward the hot water side valve seat, a bias spring that urges the valve body toward the water side valve seat, and the temperature An automatic temperature-regulating hot and cold water mixing tap comprising a water discharge temperature setting means for setting the water discharge temperature by displacing the valve body via a spring or a bias spring. The flow rate adjusting means includes a cylindrical outer case body that is non-rotatably disposed in a hole in the faucet body, and a cylindrical inner case body that is rotatably disposed in the outer case body. With
The inner case body is closed at one end and opened at the other end, and the inside in the axial direction is similarly divided into one end side and the other end side,
A peripheral wall of the outer case body is provided with a first opening communicating with the primary water channel, a second opening communicating with the secondary water channel, and a third opening communicating with the primary water channel. ,
The peripheral wall on one end side of the inner case body is provided with a water inlet that can communicate with the first opening, and a water outlet that can communicate with the second opening,
The peripheral wall on the other end side of the inner case body is provided with a hot water inlet that can communicate with the third opening,
The other end side opening of the inner case body is a hot water outlet communicating with the hot water inlet,
The inner case body is rotated for flow rate adjustment by the flow rate adjustment handle, and when the communication of the water inlet with respect to the first opening is blocked, the communication of the hot water inlet with respect to the third opening is blocked. Thus, when both the supply of water and hot water is stopped and the water inlet is communicated with the first opening, both the water and hot water are supplied by communicating the hot water inlet with the third opening. The automatic temperature control type hot and cold water mixing tap according to claim 1, which is configured as described above. According to the flow rate setting by the flow rate adjustment handle, the flow rate adjusting means which can be supplied by adjusting the flow rate of water or hot water supplied from the outside and can stop the supply;
The water or hot water supplied from the flow rate adjusting means and the hot water or water supplied from the outside are mixed, and the water to be mixed according to the temperature of the mixed hot water and the temperature setting by the temperature control handle, A temperature adjusting means that automatically adjusts the ratio of hot water and adjusts the temperature of the mixed hot and cold water to a set temperature by a temperature adjusting handle;
The flow rate adjusting means can simultaneously adjust the flow rate of hot water supplied from the temperature adjusting means together with the flow rate of water or hot water supplied from the outside according to the flow rate setting by the flow rate adjusting handle. And both supply can be stopped.
The temperature adjusting means includes a water side valve seat and a hot water side valve seat provided in the valve body, and a valve body that is held in the valve body so as to be displaceable in the axial direction and connectable to each valve seat. A temperature-sensitive spring made of a shape memory material that urges the valve body toward the hot water side valve seat, a bias spring that urges the valve body toward the water side valve seat, and the temperature sensitive spring. Alternatively, an automatic temperature-regulating hot and cold water mixing tap characterized by comprising water discharge temperature setting means for setting the water discharge temperature by displacing the valve body via the bias spring.   4. The automatic temperature control according to claim 3, wherein the flow rate adjustment unit switches a supply destination of hot water supplied from the temperature adjustment unit to a spout side or a shower head side based on a setting by the flow rate adjustment handle. -Type water tap. A water-side crank tube for supplying water, and a horizontally long faucet body connected to the water-side crank tube for supplying hot water,
5. The flow rate adjustment handle and the temperature adjustment handle are provided at both ends of the faucet body, and the rotation axes thereof are arranged on the same axis. 5. The automatic temperature control type hot and cold water mixing tap as described in the paragraph.

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