TW202032046A - Hot and cold water mixing faucet - Google Patents

Abstract

The purpose of the present invention, relating to a hot and cold water mixing faucet device having a resin housing, is to provide a hot and cold water mixing faucet device in which the length of a housing in an axial direction is small so that the housing can be miniaturized, and in which a first discharge port and a second discharge port are disposed in the center of the housing. A hot and cold water mixing faucet comprises: a switching mechanism (20) performing the switching of the discharge port in order to discharge the mixed hot and cold water from a hot and cold water mixing mechanism through any one of the first discharge port (4) and the second discharge port (5); and a discharge flow path forming member (30) which is accommodated in the housing, and in which first and second flow paths (32, 33) for supplying the mixed hot and cold water from the switching mechanism (20) to the first discharge port (4) and the second discharge port (5) are formed. In the discharge flow path forming member (30), the first flow path (32) and the second flow path (33) are formed concentrically, the inlets of the first and second flow paths each communicate with the switching mechanism (30), and the outlets of the first and second flow paths (32, 33) communicate with the first discharge port (4) and the second discharge port (5) of the cylindrical resin housing (H), respectively.

Description

Hot and cold water mixing valve

The present invention relates to a cold and hot water mixing valve, in particular to a cold and hot water mixing valve with a housing made of resin.

In the past, hot and cold water mixing valves have been widely used in showers, bathtubs, sanitary equipment for washbasins, etc., to mix hot and cold water to produce a mixture of a predetermined temperature set by the user Hot and cold water. As a general cold and hot water mixing valve, there is known a cold and hot water mixing valve device equipped with a thermostat cartridge and a switching mechanism. The thermostat cartridge is set to adjust the mixing ratio of cold and hot water to change the mixing of cold and heat. The hot and cold water mixing mechanism of the temperature of the water is used to switch the faucet (faucet) outlet and the shower outlet. The switching mechanism switches the discharge of the mixed cold and hot water that has reached a predetermined temperature according to the valve core of the thermostat into a faucet discharge port and a shower discharge port. The cold and hot water mixing mechanism and the switching mechanism are housed in a metal shell, and a lever (lever) (rotary plate () for temperature adjustment for temperature adjustment of the cold and hot water mixing mechanism is provided at one end of the metal shell dial)), at the other end is provided with a switch lever (dial) for switching the faucet outlet and shower outlet. In the cold and hot water mixing valve device constructed in this way, the temperature of the mixed cold and hot water sprayed is set to a predetermined temperature by a lever (turntable) for temperature adjustment. Then, by switching the lever (dial) to select either the faucet outlet or the shower outlet, the user can obtain the mixed hot and cold water at a predetermined temperature from the desired outlet. However, since the general hot and cold water mixing valve system has a metal shell, the cost will increase. Therefore, a cold and hot water mixing valve with a resin shell is expected. Japanese Patent No. 2827806 has proposed a resin Cold and hot water mixing valve with manufactured shell. The cold and hot water mixing valve device shown in the Japanese Patent No. 2827806 will be described based on FIG. 10. As shown in FIG. 10, the housing 51 of the hot and cold water mixing valve device 50 is composed of a double-layer housing of an inner housing 52 made of resin and an outer housing 53 made of resin. The cold and hot water mixing mechanism 54 and the switching mechanism 55 are housed in the inner housing 52. In addition, the cold and hot water mixing mechanism 54 and the switching mechanism 55 are arranged separately, and a space S is provided between the cold and hot water mixing mechanism 54 and the switching mechanism 55. Furthermore, between the inner casing 52 made of resin and the outer casing 53 made of resin, there are provided a hot water side passage 58 and a cold water side passage from the hot water side and cold water side supply pipes 56, 57 to the cold and hot water mixing mechanism 54 59. In addition, a mixed cold and hot water passage 61 from the switching mechanism 55 to the faucet outlet 60 is provided. In addition, a mixed cold and hot water passage 63 from the switching mechanism 55 to the shower outlet 62 is provided. However, as mentioned above, in the hot and cold water mixing valve device shown in Japanese Patent No. 2827806, since the inner casing made of resin and the outer casing made of resin are required, the number of parts increases and the cost increases. Subject. In addition, in the hot and cold water mixing valve device shown in Japanese Patent No. 2827806, a mixed cold and hot water is provided between the resin-made inner housing and the resin-made outer housing from the switching mechanism toward the faucet outlet and the shower outlet.之 Access. Therefore, the faucet outlet and the shower outlet are arranged at shifted positions in the axial direction of the hot and cold water mixing valve device. As a result, there is a technical problem that the housing of the hot and cold water mixing valve device becomes longer in the axial direction and the housing is enlarged. In addition, the cold and hot water mixing mechanism and the switching mechanism are separately arranged, and a space is provided between the cold and hot water mixing mechanism and the switching mechanism, which causes the housing to become longer in the axial direction and to increase the size of the housing. Moreover, since the faucet outlet and the shower outlet are arranged on the side of the switching mechanism from the center of the housing, the external force acting on the faucet outlet and the shower outlet during use (the user applies the faucet pipe), The shower hose (shower hose) acts on one side of the housing, and the connection between the cold water supply port and the cold water side supply piping and the housing near the connection may be damaged.

In order to solve the above-mentioned problems, the inventors of the present invention conducted intensive research on a cold and hot water mixing valve device with a resin-made shell based on the following items: do not use a double shell, and shorten the length of the shell in the axial direction, and further A faucet outlet and a shower outlet are formed between the hot water supply port and the cold water supply port. Then, the inventors of the present invention newly conceived a discharge channel forming member as a path for the mixed cold and hot water from the switching mechanism to the faucet outlet and the shower outlet, and found that the above-mentioned problem can be solved by this kind of discharge channel forming member. Complete the present invention. The present invention has been completed under the above-mentioned circumstances, and its purpose is to provide a resin-made shell, the axial length of the shell is short, the shell can be miniaturized, the faucet outlet and the shower outlet are arranged in the center of the shell Hot and cold water mixing valve device. The hot and cold water mixing valve of the present invention to solve the above-mentioned problems includes at least: a resin-made cylindrical housing with a hot water supply port, a cold water supply port, a first discharge port, and a second discharge port; a cold and hot water mixing mechanism , Is housed in the housing for mixing the hot water supplied from the hot water supply port with the cold water supplied from the cold water supply port to become mixed cold and hot water at a predetermined temperature; the switching mechanism is housed in the aforementioned In the casing, in order to discharge the mixed cold and hot water at a predetermined temperature from the hot and cold water mixing mechanism from either the first discharge port and the second discharge port, the discharge port is switched; and a discharge flow path forming member , Is housed in the housing, and forms a first flow path and a second flow path for supplying mixed cold and hot water from the switching mechanism to the first discharge port and the second discharge port; the discharge flow path forming member The first flow path and the second flow path are formed concentrically, and the inlets of the first flow path and the second flow path are respectively communicated with the switching mechanism, and the outlets of the first flow path and the second flow path are respectively It communicates with the discharge ports of the first discharge port and the second discharge port of the resin-made cylindrical casing. The cold and hot water mixing valve of the present invention is provided with a discharge flow path forming member in the housing, and the discharge flow path forming member is formed with a concentric circular shape for supplying mixed cold and hot water to the first outlet and the second outlet respectively. The first flow path and the second flow path, and the inlet of the flow path is connected to the switching valve mechanism, and the outlet of the flow path is respectively communicated with the first discharge port and the second discharge port of the resin-made cylindrical casing. That is, the mixed cold and hot water that is configured to be discharged from the switching valve mechanism is discharged from the discharge ports of the first discharge port and the second discharge port of the cylindrical casing through the first flow path and the second flow path arranged in concentric circles. In this way, since the first flow path and the second flow path are formed concentrically, the length of the resin-made housing in the axial direction can be shortened and the housing can be miniaturized. Here, it is preferable that the switching mechanism includes: a bottomed cylindrical switching valve that is rotated by a switching operation to supply mixed cold and hot water at a predetermined temperature from the cold and hot water mixing mechanism to the inside; The through hole and the second through hole are provided at different positions in the axial direction of the peripheral surface of the switching valve; the switching valve housing contains the switching valve; and the first through holes and the second through holes formed in the switching valve housing The through holes are formed at different positions in the axial direction and in different radial directions; by the rotation of the switching valve, the first through hole of the switching valve is consistent with the first through hole of the switching valve housing In this case, the first through hole of the switching valve is connected to the inlet of the first flow path of the discharge flow path forming member, and the outlet of the first flow path is connected to the first discharge of the resin-made cylindrical casing. Outlet communication; when the second through hole of the switching valve and the second through hole of the switching valve housing are in agreement, the second through hole of the switching valve and the second through hole of the discharge flow path forming member are respectively made The inlet of the flow path is connected, and the outlet of the second flow path is communicated with the second discharge port of the resin-made cylindrical casing; the mixed cold and hot water supplied from the cold and hot water mixing mechanism is passed from a bottomed cylindrical shape The switching valve is supplied to the first discharge port or the second discharge port of the cylindrical housing made of resin. Furthermore, it is preferable that the discharge flow path forming member includes: a cylindrical first peripheral wall; and a second peripheral wall formed concentrically with the first peripheral wall and formed inside the first peripheral wall , And the length in the axial direction is shorter than the first peripheral wall; the third peripheral wall is formed concentrically with the second peripheral wall and is formed inside the second peripheral wall, and the length in the axial direction is longer than the second peripheral wall Still short; the first bottom wall is formed at the bottom of the first and second peripheral walls; the second bottom wall is formed at the bottom of the second and third peripheral walls; the first flow path, Is formed between the first peripheral wall, the second peripheral wall, and the first bottom wall portion; and the second flow path is formed between the second peripheral wall, the third peripheral wall, and the second bottom wall portion ; The first flow path and the second flow path are respectively in communication with the first through hole and the second through hole formed in the switching valve housing. Furthermore, preferably, the discharge channel forming member includes a third bottom wall portion formed inside the third peripheral wall; a communication hole formed on the third bottom surface portion; and a mixing chamber forming wall portion, It extends in the opposite direction of the third peripheral wall and forms a mixing chamber; and a cold water inlet is formed at the front end of the wall forming the mixing chamber; on the inner peripheral surface and the circle of the cylindrical shell made of resin A cold water inflow path is formed between the outer peripheral surfaces of the cylindrical first peripheral wall; the cold water system supplied from the cold water supply port flows into the mixing chamber through the cold water inflow path and the cold water inflow port and is mixed with the hot water ; The mixed cold and hot water is supplied to the inside of the switching valve through the communication hole of the third bottom wall. In this way, since the cold water inlet and the mixing chamber forming wall are formed in the discharge channel forming member, the mixing valve mechanism and the switching mechanism can be arranged without providing a gap in the axial direction of the housing. As a result, the axial length of the resin-made housing can be shortened and the housing can be miniaturized. In particular, it is preferable that the cold and hot water mixing mechanism includes at least an actuator, one end of which is in contact with the third bottom wall portion of the discharge flow path forming member, and expands and contracts in accordance with temperature changes by mixing the cold and hot water Actuation; and a control valve body for the other end of the actuator to contact; the actuator is housed in the mixing chamber formed by the wall forming the mixing chamber. With such a configuration, the axial length of the resin-made housing can be further shortened and the housing can be miniaturized. In addition, the first discharge port and the second discharge port may be arranged in the central position of the hot water supply port and the cold water supply port in the axial direction of the housing, and the axial direction is different. With this configuration, the length of the housing in the axial direction can be shortened, and the housing can be miniaturized. In addition, since the first outlet and the second outlet can be arranged in the center of the housing, the external force acting on the first outlet and the second outlet during use (the user applies the faucet piping, shower hose) The external force acts equally on the hot water supply port and the cold water supply port, and the damage of the hot water supply port connection part and the cold water supply port connection part can be suppressed due to the ineffective bias. According to the present invention, it is possible to obtain a cold and hot water mixing valve device having a resin-made housing, the housing is short in the axial direction, the housing can be miniaturized, and the first outlet and the second outlet are arranged in the center of the housing.

Hereinafter, the cold and hot water mixing valve according to the embodiment of the present invention will be described based on FIGS. 1 to 9. Figures 1 and 2 show the overall shape of the cold and hot water mixing valve 1. As shown in Figures 1 and 2, the hot and cold water mixing valve 1 is equipped with: a hot water supply port 2, which can be connected to a hot water supply pipe (not shown) that can supply hot water; and a cold water supply port 3, which can be connected to supply hot water. Cold water supply pipe (not shown) for cold water. In addition, the hot and cold water mixing valve 1 is provided with: a first outlet 4 for supplying mixed cold and hot water to the outlet pipe (not shown) of a faucet; and a second outlet 5 for installation of shower hoses and the like. The shower supplies mixed hot and cold water. The hot water supply port 2 and the cold water supply port 3 are provided on the back side of the substantially cylindrical housing H, the first outlet 4 is provided on the lower surface side of the substantially cylindrical housing H, and the second outlet 5 is Set on the back side of the housing H. In addition, the first discharge port 4 and the second discharge port 5 are arranged in the central position of the hot water supply port 2 and the cold water supply port 3 in the axial direction of the housing H, and are located at different positions in the radial direction. As shown in FIG. 2, the so-called different positions in the radial direction means that the first outlet 4 and the second outlet 5 are arranged at positions shifted by 90 degrees in the circumferential direction with the axis of the housing H as the center. . The shell H is made of resin, and as the resin system, a resin having heat resistance, such as PPS (polyphenylenesulfide; polyphenylene sulfide) resin, PSF (polysulphone; polysulfide) resin, etc., can be used. The housing H having the hot water supply port 2, the cold water supply port 3, the first discharge port 4, and the second discharge port 5 is formed by a molding method. In this way, the first discharge port 4 and the second discharge port 5 are arranged in the central position of the hot water supply port 2 and the cold water supply port 3 in the axial direction of the housing H, and are located at different positions in the radial direction. Therefore, it is possible to prevent the external force acting on the first outlet 4 and the second outlet 5 (the force applied by the user from applying external force to the faucet piping or shower hose) that acts on the hot water supply of the support housing during use. A connection part between a pipe (not shown) and the hot water supply port 2 or a connection part between a cold water supply pipe (not shown) and the cold water supply port 3. As a result, it is possible to suppress damage to the housing H in the vicinity of the hot water supply port 2 or the hot water supply port 2 or the cold water supply port 3 or the cold water supply port 3 of the housing H made of resin. In addition, although not shown, a temperature adjustment dial (lever) for rotating the rotating shaft 11 is provided on the outer side of the rotating shaft 11 for operating the hot and cold water mixing mechanism 10. Similarly, on the outer side of the rotating shaft 21 for operating the switching mechanism 20, a switching dial (lever) for rotating the rotating shaft 21 is provided. Next, the cold and hot water mixing mechanism 10 will be described based on FIGS. 3 and 4. The hot and cold water mixing mechanism 10 has a housing 12 that rotatably supports a rotating shaft 11. The housing 12 is made of resin, and resin with heat resistance, such as PPS (polyphenylene sulfide) resin, PSF (polyphenylene sulfide) resin, etc., can be used, and it is formed by a molding method. As shown in FIG. 3, the overall shape of the casing 12 is formed into a bottomed cylindrical shape, and a cylindrical wall at the front end of the casing 12 is formed to communicate with the hot water supply port 2 and supply hot water to flow into the casing 12. The internal hot water flow inlet A. The cold water inflow port B into which the cold water from the cold water supply port 3 flows in is arranged in parallel with the hot water inflow port A at the front end of the casing 12 in the axial direction. The cold water inlet B is provided at the front end of the discharge flow path forming member 30. In addition, a hot water valve seat 12 a is provided at the front end of the housing 12, and a cold water valve seat 31 is provided at the front end 30 a of the discharge flow path forming member 30. In addition, a hot water valve 14b and a cold water valve 14c are provided in a valve body 14a of the control valve body 14 described later. Furthermore, the O-ring 6 is in contact with the valve body 14a of the control valve body 14 described later, and when the valve body 14a has moved, it will also separate the hot water inlet A and the cold water inlet B to prevent hot and cold water Blending. A part of the elastic body 16 is housed in the control valve body 14, and one end of the elastic body 16 is arranged in contact with the inner surface of the bottom 14 d of the control valve body 14. In addition, the outer surface of the bottom 14d of the control valve body 14 is arranged for one end of the actuator 17 to contact. As shown in FIG. 3, the actuator 17 is supported in contact with the outer surface of the third bottom wall 41 formed on the discharge flow path forming member 30 and the bottom 14c of the control valve body 14. In addition, the control valve body 14 is formed by a resin having heat resistance, such as PPS (polyphenylene sulfide) resin, PSF (polyphenylene sulfide) resin, etc., by a molding method. In addition, the cold and hot water mixing mechanism 10 includes an adjusting screw shaft 15. The adjusting screw shaft 15 is screwed with the rotating shaft 11 and advances and retreats corresponding to the rotation of the rotating shaft 11 to adjust the position of the control valve body 14 in the axial direction. The adjusting screw shaft 15 does not rotate the housing 12 but is configured to be movable toward the axial direction of the housing 12. In addition, a threaded portion 15a is formed on the adjustment screw shaft 15 and is threadedly engaged with the threaded portion 11a of the rotating shaft 11. As a result, the warming dial is rotated, whereby the threaded portion 11a of the rotating shaft 11 is rotated, so that the adjusting screw shaft 15 slides in the axial direction, and the control valve body 14 is moved via the elastic body 16. That is, the user can set and change the position of the control valve body 14 by operating the temperature calling dial, so as to spit out mixed water of a desired temperature. In addition, the elastic body 16 is formed of a material with a fixed spring constant. As the elastic body 16, for example, a coil spring made of stainless steel can be cited. In addition, the actuator 17 expands and contracts according to temperature changes. As the actuator 17, for example, a shape memory alloy spring (SMA (shape memory alloy) spring) or a wax element (wax element) formed of a material whose spring constant changes with temperature can be cited. The control valve body 14 can bear the resilient force of the elastic body 16 to slide the control valve body 14 to the side of the cold water valve seat 31, and can bear the resilient force of the actuator 17 to slide the control valve body 14 to the hot water valve Seat 12a side. That is, the control valve body 14 adjusts the interval between the hot water valve 14b and the hot water valve seat 12a and the cold water valve 14c and the cold water valve seat by the balance of the load received from the elastic body 16 and the actuator 17 The interval of 31. With this structure, the hot and cold water mixing valve 1 can adjust the mixing ratio of hot water flowing in from the hot water inlet A and cold water flowing in from the cold water inlet B. In addition, a mixing chamber C is formed from the inside of the hot water inlet A and the cold water inlet B of the housing 12 toward the side of the switching mechanism 20. The mixing chamber C is formed by the discharge channel forming member 30. Next, the discharge channel forming member 30 will be described based on FIGS. 3 to 6. The discharge flow path forming member 30 forms a first flow path 32 and a second flow path 33 that are concentric to supply the mixed cold and hot water to the first discharge port 4 and the second discharge port 5, respectively. Then, as shown in FIG. 4, the inlets of the first flow path 32 and the second flow path 33 are respectively communicated with the first through hole h1 and the second through hole h2 formed in the switching valve housing h, and the first flow path 32 The outlet 34 and the outlet 35 of the second flow path 33 respectively communicate with the first outlet 4 and the second outlet 5 of the cylindrical housing H made of resin. Specifically, as shown in FIGS. 5 and 6, the discharge flow path forming member 30 is formed with a cylindrical first peripheral wall 36; and a second peripheral wall 37, which is formed concentrically with the first peripheral wall 36 The shape is formed inside the first peripheral wall 36, and the length in the axial direction is shorter than that of the first peripheral wall 36. In addition, a first bottom wall 38 is formed at the bottom of the first peripheral wall 36 and the second peripheral wall 37. Furthermore, a third peripheral wall 39 is formed concentrically with the second peripheral wall 37 and formed inside the second peripheral wall 37, and the length in the axial direction is shorter than the second peripheral wall 37. In addition, a second bottom wall 40 is formed at the bottom of the second peripheral wall 37 and the third peripheral wall 39. In addition, a third bottom wall 41 is formed inside the third peripheral wall 39 of the discharge flow path forming member 30, and a communication hole 41 a is formed in the third bottom wall 41. In addition, in the third bottom wall portion 41, a mixing chamber forming wall portion 42 that forms a mixing chamber extends in the direction opposite to the first peripheral wall 36, the second peripheral wall 37, and the third peripheral wall 39. The third bottom wall 41 and the mixing chamber forming wall 42 can form a bottomed cylindrical mixing chamber C for mixing cold and hot water. In addition, a cold water inflow port B and a cold water valve seat 31 are provided at the front end of the mixing chamber forming wall 30. The third bottom wall 41 is for the end of the actuator 17 to contact and be locked. A guide hole 41b for movably guiding the shaft portion 14e of the control valve body 14 is provided in the center portion of the third bottom wall portion 41. Then, as shown in FIGS. 3 and 4, the end portion of the first peripheral wall 36 and the first flange portion h3 of the switching valve housing h are in close contact with each other via an O-ring 7a. In addition, the end portion of the second peripheral wall 37 and the second flange portion h4 of the switching valve housing h are in close contact with each other via an O-ring 7b. Thereby, the first flow path 32 is formed between the first peripheral wall 36, the second peripheral wall 37, the first bottom wall portion 38, and the switching valve housing h. In addition, the end portion of the third peripheral wall 39 and the third flange portion h5 of the switching valve housing h are in close contact with each other via an O-ring 7c. Thereby, the second flow path 33 is formed between the second peripheral wall 37, the third peripheral wall 39, the second bottom wall portion 40, and the switching valve housing h. Then, as shown in FIG. 4, a first through hole h1 corresponding to the first flow path 32 and a second through hole h2 corresponding to the second flow path 33 are formed in the switching valve housing h. Then, one end of the first flow path 32 and one end (inlet) of the second flow path 33 are configured to communicate with the first through hole h1 and the second through hole h2 of the switching valve housing h, respectively. Also, it is configured that the other end of the first flow path 32 (first flow path outlet 34) is connected to the first outlet 4, and the other end of the second flow path 33 (second flow path outlet 35) is connected to the second outlet 5 Connected. As a result, the first through hole h1 of the switching valve housing h communicates with the first discharge port 4 through the first flow path 32, and the second through hole h2 communicates with the first discharge port 4 through the second flow path 33. One end of the housing H is closed by the cover h6 of the switching valve housing h through the O-ring 7d. In addition, a cold water inflow path D is formed between the inner peripheral surface of the cylindrical housing H made of resin and the outer peripheral surface of the cylindrical first peripheral wall 36. Then, the configuration is such that the cold water supplied from the cold water supply port 3 flows into the mixing chamber C via the cold water inflow path D and the cold water inflow port B. Then, it is configured that the hot water supplied from the hot water supply port 2 and supplied via the hot water inlet A and the cold water supplied via the cold water inlet B are mixed in the mixing chamber C and pass through the third bottom wall portion The communicating hole 41a of 41 allows the mixed cold and hot water to be supplied to the inside of the switching valve 22. Next, the switching mechanism 20 will be described based on FIGS. 3, 4, and FIGS. 7-9. As shown in FIGS. 3 and 4, the switching mechanism 20 is provided with a bottomed cylindrical switching valve 22, which is attached to a rotating shaft 21 that is rotated by a user's switching operation. As shown in FIG. 7, a first through hole 22 a and a second through hole 22 b are provided in the axial direction of the peripheral surface of the switching valve 22. The first through hole 22a and the second through hole 22b are respectively provided with two through holes. On the other hand, as shown in FIG. 8, a first through hole h1 and a second through hole h2 are formed at different positions in the axial direction of the switching valve housing h for accommodating the switching valve 22 and in different radial directions. The first through hole h1, the second through hole h2, the first through hole 22a, and the second through hole 22b are formed at corresponding positions (heights). In addition, FIG. 8 shows the main part of the switching valve housing h, and the flange part etc. are not shown. As shown in FIGS. 3 and 4, the switching valve 22 is housed in the switching valve housing h via a cylindrical collar 23. Although the cylindrical collar 23 is used to improve the rotational slidability of the switching valve 22, the collar 23 has the same position as the first through hole h1 and the second through hole h2 of the switching valve housing h Through holes are also formed. Since the switching mechanism 20 is constructed in this way, the switching valve 22 is rotated by rotating the rotating shaft 21 as shown in FIG. 9, and when the first through hole 22a of the switching valve 22 and the first through hole 22a of the housing H When the through holes h1 match, the first through hole 22a and the first through hole h1 will communicate with each other, and the mixed water of cold and hot water will be supplied to the first flow path 32. At this time, since the second through hole 22b of the switching valve 22 and the second through hole h2 of the housing H do not match (not communicate), the mixed water of cold and hot water is not supplied to the second flow path 33. In addition, when the switching valve 22 rotates and the second through hole 22b of the switching valve 22 coincides with the second through hole h2 of the housing H, the second through hole 22b and the second through hole h2 will communicate and the mixed water of cold and hot water will be supplied. To the second flow path 33. At this time, since the first through hole 22 a of the switching valve 22 and the first through hole h1 of the housing H do not match (not communicate), the cold and hot water mixed water system is not supplied to the first flow path 32. The operation of the hot and cold water mixing valve will be described. First, a temperature adjustment handle (not shown) is used to adjust the elastic pressure of the elastic body 16 to set the hot water outlet temperature. After that, similar to the conventional hot and cold water mixing valve, the actuator 17 and the elastic body 16 are used to control the opening of the hot water inlet A and the cold water inlet B of the valve body 14 to adjust the hot water outlet. temperature. Here, the hot water system flows into the mixing chamber C through the hot water inflow port A (between the hot water valve 14b and the hot water valve seat 12a). On the other hand, the cold water system passes through the cold water supply port 3, the cold water inflow path D, and the cold water inflow port B (between the cold water valve 14c and the cold water valve seat 31) and flows into the mixing chamber C. Then, the mixed cold and hot water mixed in the mixing chamber C flows into the switching valve 22 from the communication hole 41 a of the third bottom wall portion 41. Next, the user rotates the rotating shaft 21 to select the first discharge port and the second discharge port. When the first through hole 22a of the switching valve 22 coincides with the first through hole h1 of the housing H, the first through hole 22a and the first through hole h1 will communicate, and the mixed water of cold and hot water will pass through the first through hole 22a and the first through hole 22a. The through hole h1 supplies the cold and hot water mixed water to the first flow path 32 and discharges the cold and hot water mixed water from the first discharge port 4. In addition, when the second through hole 22b of the switch valve 22 coincides with the second through hole h2 of the housing H by the rotation of the switch valve 22, the second through hole 22b and the second through hole h2 will communicate with each other, and the hot and cold water The mixed water supplies the cold and hot water mixed water to the second flow path 33 through the second through hole 22 b and the second through hole h2, and the cold and hot water mixed water is discharged from the second discharge port 5. As described above, in the above embodiment, in order to supply the mixed cold and hot water from the switching mechanism to the first outlet 4 and the second outlet 5, respectively, the discharge channel forming member 30 is formed with a concentric first channel. 32 and second flow path 33. Compared with the conventional case where the first flow path 32 and the second flow path 33 are formed in the axial direction of the housing, by adopting this configuration, the length of the housing in the axial direction can be further shortened and the housing can be miniaturized. In addition, the third bottom wall portion 41 of the discharge flow path forming member 30 is arranged so that one end of the actuator 17 contacts, and the third bottom wall portion 41 is formed with a communication hole 41 a communicating with the mixing chamber C. Therefore, the distance between the hot and cold water mixing mechanism 10 and the switching mechanism 20 can be shortened as much as possible, the axial length of the housing H can be further shortened, and the housing can be miniaturized. Furthermore, in the housing H made of resin, the first discharge port 4 and the second discharge port 5 may be arranged at the same position in the axial direction of the housing H and shifted from a position in the radial direction. Therefore, the external force acting on the faucet spout and the shower spout during use (the force applied by the user applying external force to the faucet pipe and shower hose) acts on one side of the housing H, thereby suppressing the impact of the housing H damaged.

1: Cold and hot water mixing valve 2: Hot water supply port 3: Cold water supply port 4: The first spit 5: The second spit 6, 7a to 7d: O-ring 10: Cold and hot water mixing mechanism 11, 21: Rotation axis 11a, 15a: threaded part 12: Shell 12a: Hot water valve seat 14: Control valve body 14a: Valve body 14b: Hot water valve 14c: cold water valve 14d: bottom 14e: Shaft 15: Adjust the screw shaft 16: elastic body 17: Actuator 20: Switching mechanism 22: Switching valve 22a, h1: the first through hole 22b, h2: second through hole 23: Collar 30: Discharge flow path forming member 30a: Front end 31: Cold water valve seat 32: The first stream 33: second flow path 34: First flow path exit 35: Second flow path exit 36: The first wall 37: Second week wall 38: The first bottom wall 39: Third Week Wall 40: second bottom wall 41: Third bottom wall 41a: Connecting hole 41b: pilot hole 42: The mixing chamber forms the wall A: Hot water inlet B: Cold water inlet C: mixing room D: Cold water inflow path H: shell h: Switch valve housing h3: First flange h4: second flange h5: third flange h6: cover

Fig. 1 is a front view of the embodiment of the present invention. Fig. 2 is a bottom view of the embodiment of the present invention. Fig. 3 is a cross-sectional view taken along line AA of Fig. 1. Fig. 4 is a BB cross-sectional view of Fig. 3. Fig. 5 is a diagram showing the flow path forming member used in the embodiment, in which (a) is a front view and (b) is a bottom view. Fig. 6 is a diagram showing a flow path forming member used in the embodiment, in which (a) is a CC cross-sectional view, and (b) is a DD cross-sectional view. Fig. 7 is a schematic perspective view showing the main part of the switching valve used in the embodiment. Fig. 8 is a perspective view showing the switching valve housing used in the embodiment. Fig. 9 is a schematic perspective view for explaining a state where the switching valve has been housed in the switching valve housing. Figure 10 shows a cross-sectional view of a conventional hot and cold water mixing valve.

1: Cold and hot water mixing valve

2: Hot water supply port

3: Cold water supply port

5: The second spit

6, 7a to 7d: O-ring

10: Cold and hot water mixing mechanism

11, 21: Rotation axis

11a, 15a: threaded part

12: Shell

12a: Hot water valve seat

14: Control valve body

14a: Valve body

14b: Hot water valve

14c: cold water valve

14d: bottom

15: Adjust the screw shaft

16: elastic body

17: Actuator

20: Switching mechanism

22: Switching valve

23: Collar

30: Discharge flow path forming member

31: Cold water valve seat

32: The first stream

33: second flow path

35: Second flow path exit

36: The first wall

37: Second week wall

38: The first bottom wall

39: Third Week Wall

40: second bottom wall

41: Third bottom wall

41a: Connecting hole

41b: pilot hole

42: The mixing chamber forms the wall

A: Hot water inlet

B: Cold water inlet

C: mixing room

D: Cold water inflow path

H: shell

h: Switch valve housing

h3: First flange

h4: second flange

h5: third flange

h6: cover

Claims (6)

A cold and hot water mixing valve, which has at least: The cylindrical shell made of resin has a hot water supply port, a cold water supply port, a first outlet and a second outlet; The cold and hot water mixing mechanism is housed in the housing for mixing the hot water supplied from the hot water supply port with the cold water supplied from the cold water supply port to become mixed cold and hot water at a predetermined temperature; The switching mechanism is housed in the housing, and the outlet is switched in order to discharge the mixed cold and hot water from the cold and hot water mixing mechanism at a predetermined temperature from either the first outlet or the second outlet. ;as well as The discharge flow path forming member is housed in the housing and forms a first flow path and a second flow path for supplying the mixed cold and hot water from the switching mechanism to the first discharge port and the second discharge port; In the discharge flow path forming member, the first flow path and the second flow path are formed concentrically, and the inlets of the first flow path and the second flow path are respectively communicated with the switching mechanism, and the first flow path is connected to the aforementioned switching mechanism. The outlet of the second flow path is respectively communicated with the first outlet and the outlet of the second outlet of the resin-made cylindrical casing. The cold and hot water mixing valve described in claim 1, wherein the aforementioned switching mechanism includes: The bottomed cylindrical switching valve is rotated by a switching operation to supply the mixed cold and hot water at a predetermined temperature from the aforementioned cold and hot water mixing mechanism to the inside; The first through hole and the second through hole are arranged at different positions in the axial direction of the peripheral surface of the switching valve; The switching valve housing contains the aforementioned switching valve; and The first through hole and the second through hole formed in the aforementioned switching valve housing are formed at different positions in the axial direction and in different radial directions; When the first through hole of the switch valve coincides with the first through hole of the switch valve housing by the rotation of the switch valve, the first through hole of the switch valve and the discharge channel forming member are respectively made The inlet of the first flow path is connected, and the outlet of the first flow path is communicated with the first discharge port of the resin-made cylindrical casing; When the second through hole of the switching valve coincides with the second through hole of the switching valve housing, the second through hole of the switching valve and the second flow path of the discharge flow path forming member are respectively set The inlet is connected, so that the outlet of the second flow path communicates with the second discharge port of the resin-made cylindrical casing; The mixed cold and hot water supplied from the cold and hot water mixing mechanism is supplied from the bottomed cylindrical switching valve to the first outlet or the second outlet of the resin-made cylindrical housing. The hot and cold water mixing valve according to claim 1 or 2, wherein the discharge flow path forming member includes: The first peripheral wall of the cylinder; The second peripheral wall is formed concentrically with the first peripheral wall and is formed inside the first peripheral wall, and the length in the axial direction is shorter than that of the first peripheral wall; The third peripheral wall is formed concentrically with the second peripheral wall and is formed inside the second peripheral wall, and the length in the axial direction is shorter than that of the second peripheral wall; The first bottom wall is formed at the bottom of the first peripheral wall and the second peripheral wall; The second bottom wall is formed at the bottom of the second peripheral wall and the third peripheral wall; The first flow path is formed between the first peripheral wall, the second peripheral wall, and the first bottom wall; and The second flow path is formed between the second peripheral wall, the third peripheral wall, and the second bottom wall; The first flow path and the second flow path are respectively communicated with the first through hole and the second through hole formed in the switching valve housing. The cold and hot water mixing valve described in claim 3, wherein the aforementioned discharge flow path forming member includes: The third bottom wall is formed inside the aforementioned third peripheral wall; The communicating hole is formed in the aforementioned third bottom wall part; The mixing chamber forms a wall, which is extended in the opposite direction of the third peripheral wall and forms a mixing chamber; and The cold water inlet is formed at the front end of the aforementioned mixing chamber forming wall; A cold water inflow path is formed between the inner peripheral surface of the cylindrical housing made of resin and the outer peripheral surface of the cylindrical first peripheral wall; The cold water system supplied from the cold water supply port flows into the mixing chamber through the cold water inflow path and the cold water inflow port and is mixed with hot water; The mixed cold and hot water is supplied to the inside of the switching valve through the communication hole of the third bottom wall. The cold and hot water mixing valve described in claim 4, wherein the aforementioned cold and hot water mixing mechanism has at least: The actuator has one end in contact with the third bottom wall portion of the discharge flow path forming member and expands and contracts according to temperature changes by mixing cold and hot water; The control valve body is for contact with the other end of the aforementioned actuator; The actuator is housed in the mixing chamber formed by the mixing chamber forming wall. The cold and hot water mixing valve according to claim 1 or 2, wherein the first outlet and the second outlet are arranged in the center of the hot water supply port and the cold water supply port in the axial direction of the housing, and Different positions in the axis direction.

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