JPH07239047A - Combination faucet - Google Patents

Abstract

PURPOSE:To cause water entering an unimmersed part inside a faucet main body to be completely discharged after a pressure test by communicating the unimmersed part with the outside of the faucet main body through draining through holes, in a combination faucet in which the inside of the faucet main body is partitioned into immersed and unimmersed parts. CONSTITUTION:The vertical position of an O ring 28 fitted over the outer peripheral surface of a valve unit 10, and the vertical position of an O ring 29 fitted over the outer peripheral surface of a casing 17, are brought close to an O ring 30, and draining through holes 33, 34, 35 each of which communicates the inside of a faucet main body 6 with the outside of an unimmersed part B are bored respectively in the valve unit 10, the faucet main body 6 and the casing 17. Water entering the unimmersed part B inside the faucet main body 6 during a pressure test can be completely discharged to the outside via the draining through holes 33, 34, 35 after the pressure test. Therefore, the combination faucet 32 prevents water which could cause corrosion of a housing 15, the casing 17 and a screw 18 from remaining in the unimmersed part B, so allowing each handle drive mechanism portion to operate smoothly.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of a hot and cold water mixing faucet in which the inside of a faucet body is divided into a water contact portion and a non-water contact portion.

[0002]

2. Description of the Related Art For example, as shown in FIG. 5, in a basin 1 equipped with a faucet for a hair wash shower, a faucet 2 and a shower handle 3 are provided upright on the upper surface of the basin 1. ing. The shower handle 3 can switch between shower water discharge and normal rectifying water discharge. When washing hair, such a faucet holds the shower handle 3 with the left hand, and the right hand holds the temperature control handle (hereinafter referred to as the temperature control handle) 4 of the faucet 2 or the flow control handle (hereinafter, the flow rate). An appropriate temperature and an appropriate amount of hot water are discharged by operating a handle 5). Therefore, in consideration of its operability, the temperature control handle 4 and the flow rate handle 5 are provided so as to be located on the same end face side on the same axis of the faucet 2.

FIG. 6 is a longitudinal sectional view showing details of a conventional hot and cold water mixing faucet 2 for a hair washing shower. Tubular faucet body 6
A temperature control handle 4 and a flow rate handle 5 are mounted on the same axis on the upper end surface side of the, and a hot water inlet 7 and a water inlet 8 are provided on the outer peripheral surface on the lower end surface side. Furthermore,
A mixed water outlet 9 is provided on the outer peripheral surface of the middle portion of the faucet body 6.

A valve unit 10 having a valve mechanism and a temperature adjusting mechanism is detachably mounted in the faucet body 6.
It is fixed to the faucet body 6 at a position not shown in the figure. At the positions corresponding to the hot water inlets 7 and 8 and the mixed water outlet 9 of the valve unit 10, ports 11 and 1 are respectively provided.
2 and 13 are formed. Further, a housing 15 that meshes with the flow rate handle 5 via a double serration ring 14 is fitted and mounted on the inner peripheral surface of the upper end of the valve unit 10, and the temperature sensing element 1 is mounted on the inner peripheral surface of the housing 15.
The casing 17 of No. 6 is screwed and mounted.

Further, a screw 18 is screwed on the inner peripheral surface of the upper end side of the casing 17, and one end side of the temperature sensing element 16 is urged downward by a counter spring 19 on the screw 18. . Further, at the center of the screw 18, the tip end side of a spindle 20 attached to the temperature control handle 4 penetrates the housing 15 and the screw 18 and is slidably spline-coupled.

On the other hand, a water side seat 21 is attached to the lower end face side of the casing 17, and a hot water side seat 23 is attached to the lower end face side of the valve unit 10 via a plug body 22 for temperature sensing. A spool 24 fitted and attached to the lower end surface side of the element 16 is disposed between the water side seat 21 and the hot water side seat 23 via a return spring 25. The spool 24 is provided with hot water inflow port 26a and hot water outflow port 26b. Also the casing 1
An outflow port 27 for hot and cold water is formed in the middle of 7.

An O-ring 28 is externally fitted to the outer peripheral surface of the valve unit 10, an O-ring 29 is externally fitted to the outer peripheral surface of the casing 17, and an O-ring 30 is further fitted to the outer peripheral surface of the temperature sensing element 16. Is fitted. The inside of the faucet body 6 is partitioned by these O-rings 28, 29, 30 into a water contact portion A through which hot water, water or hot water flows, and a non-water contact portion B where hot water, water or hot water does not flow. .

In the conventional hot and cold water mixing faucet 2 for a hair wash shower having such a structure, when the flow rate handle 5 is opened, the casing 17 moves upward through the housing 15. Along with this, the spool 24 urged by the return spring 25 also rises and moves away from the hot water seat 23 to open the hot water inlet 11. Hot water inlet 1
The hot water flowing in from No. 1 reaches the temperature sensing element 16 side through the ports 26a and 26b of the spool 24. Therefore, the temperature sensing element 16 senses the temperature of the hot water and performs an extension operation to move the spool 24 downward in the figure.

As a result, the opening area of the hot water inlet 11 is narrowed, and at the same time, the hot water inlet 12 is opened.
Then, the opening area ratio of the hot and cold water inlets 11 and 12 is determined by the temperature sensing element 16 so that the flow rate ratio of hot water and water reaches the set temperature, and the mixed hot water is supplied from the port 27 of the casing 17 to the valve unit 10. It flows through the port 13 to the side of the shower handle 3 (see FIG. 5) which also serves as the water outlet.

When it is desired to adjust the set temperature of the hot water to be discharged, the temperature adjusting handle 4 is rotated and the screw 18 is moved in the vertical direction in FIG. The opening area ratio between the water inlet 12 and the water inlet 12 may be changed. Further, in order to stop the water flow, the flow rate handle 5 is rotated to lower the casing 17 through the housing 15 so that both ends of the spool 24 are brought into contact with the hot water side seat 23 and the water side seat 21, respectively, and closed. do it.

[0011]

By the way, the conventional faucet 2 for hair wash shower is subjected to a pressure test before being shipped from the factory. This pressure resistance test is performed by immersing the faucet 2 in a water tank and sending compressed air to the water contact portion A inside the faucet body 6 in this state. During the pressure resistance test, the water faucet body 6 allows the water in the water tank to enter the non-water contact portion B through the screwing gap between the housing 15 and the casing 17 and the screwing gap between the casing 17 and the screw 18, respectively. To do. However, once the water has entered, since these screwing gaps are narrow, some of it remains without being completely removed even after the pressure resistance test.
The remaining water corrodes the housing 15, the casing 17, and the screw 18, resulting in malfunction.

The present invention has been improved and removed in view of the above-mentioned problems, and provides a hot and cold water mixing faucet capable of completely discharging water that has entered the non-water contact portion inside the faucet body after a pressure resistance test. It is something to do.

[0013]

The first means adopted by the present invention is, as shown in the embodiment of FIGS. 1 to 4, that the inside of the faucet body 6 has a wetted portion A and a non-wetted portion B. The hot and cold water mixing faucet is characterized in that the non-water contact portion B and the outside of the water faucet body 6 are communicated with each other through through holes 33, 34 and 35 for drainage.

The second means adopted by the present invention is, as shown in the embodiment of FIG. 1, a temperature adjusting handle 4 and a flow control handle 5 on the same end face side on the same axis of a water faucet body 6 having a cylindrical shape. And the inside of the faucet body 6 is provided with a water-contacting portion A and a non-water-contacting portion B.
In a hot and cold water mixing faucet partitioned into and, a tubular valve unit 10 is mounted in the faucet body 6, and a hot water inlet provided near the end face of the faucet body 6 opposite to the handles 4 and 5 7 is installed in the valve unit 10, and a cylindrical casing 17 that moves up and down by the flow rate control handle 5 is installed between the spool 24 and the handle side end surface in the valve unit 10. The spool 24 is mounted between them and the opening and closing of the spool 24 is controlled by the tip of the casing 17, and the non-water contact portion B and the outside of the faucet body 6 are bored in the faucet body 6, the valve unit 10 and the casing 17. The hot and cold water mixing faucet is characterized by communicating with the through holes 34, 33, 35 for drainage.

The third means adopted by the present invention is, as shown in the embodiment of FIG. 2, a temperature adjusting handle 4 and a flow rate controlling handle 5 on the same end face side on the same axis of the faucet body 6 having a cylindrical shape. And the inside of the faucet body 6 is provided with a water-contacting portion A and a non-water-contacting portion B.
In a hot and cold water mixing faucet partitioned into and, a tubular valve unit 40 is mounted in the faucet body 6, and a hot water inlet provided near the end face of the faucet body 6 on the opposite side to the handles 4 and 5 7 and the water inlet 8 and always moves between the two inlets 7, 8
Is mounted in the valve unit 40, and a cylindrical housing 45 that moves up and down by the flow rate control handle 5 is mounted between the intermediate portion in the valve unit 40 and the handle side end surface. The tip end of the housing 45 controls the opening / closing of the mixed water outlet 9 provided in the middle part of the faucet body 6, so that the non-water contact portion B and the outside of the faucet body 6 are connected to each other. Valve unit 40 and housing 4
5 is a hot and cold water mixing faucet which is communicated with through holes 34, 47 and 35 for drainage formed in 5.

The fourth means adopted by the present invention is, as shown in the embodiment of FIG. 3, a temperature adjusting handle 4 and a flow rate controlling handle 5 on the same end face side on the same axis of a water faucet body 6 having a cylindrical shape. And the inside of the faucet body 6 is provided with a water-contacting portion A and a non-water-contacting portion B.
In the hot and cold water mixing faucet divided into and, it moves between the hot water inlet 7 and the water inlet 8 provided near the end faces of the faucet body 6 on the opposite side of the handles 4 and 5, A spool 54, which holds the inlets 7 and 8 in an open state, is mounted in the faucet body 6, and is screwed into a tubular housing 55 integrally connected to the flow rate control handle 5 and inside the faucet body 6. Cylindrical valve body 56 that moves vertically by serration coupling to the peripheral surface side
Is mounted between the middle part of the faucet body 6 and the end surface on the handle side, and the tip end of the tubular valve body 56 controls the opening / closing of the mixed water outlet 9 provided in the middle part of the faucet body 6. The non-water contact portion B and the outside of the faucet body 6 are communicated with each other through the drainage through holes 34 and 57 formed in the faucet body 6 and the tubular valve body 56. It is a stopper.

The fifth means adopted by the present invention is, as shown in the embodiment of FIG. 4, the temperature adjusting handle 4 and the flow rate controlling handle 5 on the same end face side on the same axis of the faucet body 6 having a cylindrical shape. And the inside of the faucet body 6 is provided with a water-contacting portion A and a non-water-contacting portion B.
In the hot and cold water mixing faucet divided into and, it moves between the hot water inlet 7 and the water inlet 8 provided near the end faces of the faucet body 6 on the opposite side of the handles 4 and 5, The spool 54 that holds the inlets 7 and 8 in the open state and the temperature-sensitive element 16 that moves the spool 54 are mounted in the thermo cartridge 71, and the thermo cartridge 71 is mounted in the faucet body 6. The rear end side of the thermo cartridge 71 is fixed to the water faucet body 6, screwed into the tubular housing 55 integrally connected to the flow rate control handle 5, and serrated to the inner peripheral surface side of the water faucet body to move up and down. The moving tubular valve body 66 is mounted between the intermediate portion of the faucet body 6 and the handle-side end face, and the mixed water provided in the intermediate portion of the faucet body 6 at the tip of the tubular valve body 66 is mounted. The outlet 9 is controlled to open and close, and the thermo cartridge 71 A part of the portion side is fitted inside the lower portion of the tubular valve body 66, and a seal member 72 is arranged between the inner peripheral surface side of the thermo cartridge 71 and the outer peripheral surface side of the temperature sensitive element 16. The non-water contact part B and the outside of the faucet body 6 are
And drainage through holes 34, 67 formed in the tubular valve element 66.
It is a hot and cold water mixed faucet characterized by communicating with each other.

[0018]

In the hot and cold water mixing faucet of the first to fifth means of the present invention, as shown in the embodiment of FIGS. 1 to 4, the non-water contact portion B inside the faucet body 6 during the pressure resistance test. After entering the pressure resistance test, the water that has entered can be discharged to the outside through the drainage through holes 33, 34, 35 and the like.

In the hot and cold water mixing tap according to the third means of the present invention, as shown in the embodiment of FIG. 2, the hot water and water inflow ports 11 and 12 are always kept open by the spool 24. ing. The water stop state is achieved by seating the lower end side of the housing 45 connected to the flow rate handle 5 on the valve seat seat 44 of the mixed water outflow port 13. Therefore, the urging force of the return spring 25 that urges the spool 24 does not act on the screw portion of the housing 45 and is completely irrelevant. Therefore, the screw portion will not be worn early, and the opening / closing operation of the flow rate handle 5 will not be heavy. Further, the hot water and the water have reached the mixing chamber, and the desired water discharge temperature can be immediately obtained even at the beginning of water discharge.

In the hot and cold water mixing faucet of the fourth means of the present invention, as shown in the embodiment of FIG. 3, a cylindrical valve body 56 is provided on the inner peripheral surface side of the housing 55 connected to the flow rate handle 5. Are screwed together, and the outer peripheral surface side of the tubular valve body 56 is serrated to the faucet body 6. The valve seat seat 53 provided on the lower end side of the tubular valve body 56 can be directly seated on the outlet 9 of the faucet body 6. In the hot and cold water mixing faucet of the fourth means, it is possible to omit the casing 41 of the temperature sensitive element of the hot and cold water mixing faucet of the third means. Other configurations and operational effects are the same as in the case of the hot and cold water mixing faucet of the third means.

In the hot and cold water mixing faucet of the fifth means of the present invention, as shown in the embodiment of FIG. 4, the spool 54 and the temperature sensing element 16 are housed in the thermo cartridge 71, and the thermo cartridge 71. Is fixed to the faucet body 6. Then, a part of the upper side of the thermo cartridge 71 is fitted into the tubular valve body 66, and the seal member 72 is arranged between the inner peripheral surface side of the thermo cartridge 71 and the outer peripheral surface of the temperature sensing element 16. is doing. As a result, the tubular valve body 66 receives the supply pressure of the hot water only at its lower end surface, and the pressure receiving area for the upward acting pressure is reduced, so that the operability of the flow rate handle 5 can be reduced. .

[0022]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The structure of the present invention will be described below with reference to the embodiments shown in the drawings. The same reference numerals as in the conventional case are the same members.

(First Embodiment) FIG. 1 relates to a first embodiment of the present invention and is a vertical sectional front view of a hot and cold water mixing faucet 32. The improvement of this embodiment is that the vertical position of each of the O-ring 28 externally fitted on the outer peripheral surface of the valve unit 10 and the O-ring 29 externally fitted on the outer peripheral surface of the casing 17 is lower than that of the conventional one shown in FIG. To one side or a plurality of sets of drainage through-holes 33, 34, 35 for communicating the non-water-contacting portion B inside the faucet body 6 with the outside while moving the valve unit 10 to the O-ring 30. , The faucet body 6 and the casing 17 are provided. Other configurations are substantially the same as those of the conventional hot and cold water mixing faucet 2 shown in FIG. 6, and therefore detailed description thereof will be omitted.

During the pressure resistance test, the non-wetted part B inside the faucet body 6
Water that has penetrated into the water is drained through holes 33, 3 after the pressure resistance test.
It can be completely discharged to the outside via 4, 35. Therefore, the hot and cold water mixing faucet 32 does not allow water that causes corrosion of the housing 15, the casing 17 and the screw 18 to remain in the non-water contact portion B, and thus each handle drive mechanism portion operates smoothly.

(Second Embodiment) FIG. 2 relates to a second embodiment of the present invention and is a vertical sectional front view of a hot and cold water mixing faucet 42. An improvement of this embodiment is that an O-ring 48 arranged between the inner peripheral surface of the faucet body 6 and the outer peripheral surface of the valve unit 40,
Vertical positions of the O-ring 49 arranged between the inner peripheral surface of the valve unit 40 and the outer peripheral surface of the housing 45 and the O-ring 29 arranged between the inner peripheral surface of the housing 45 and the outer peripheral surface of the casing 41. Is brought close to the O-ring 30 fitted on the temperature-sensitive element 16, thereby partitioning the inside of the faucet body 6 into a lower water contact portion A and an upper non-water contact portion B, and at the same time, the faucet body 6 One set or a plurality of sets of drainage through-holes 34, 35, 46, 47 for communicating the non-wetted portion B of the inside with the outside are connected to the faucet body 6, the casing 41, the housing 45,
That is, the valve unit 40 is provided.

During the pressure resistance test, the non-wetted part B inside the faucet body 6
Water that has penetrated into the water will be drained through the through holes 34, 3 after the pressure resistance test.
It can be completely discharged to the outside via 5, 46 and 47. Therefore, the hot and cold water mixing faucet 42 does not allow water that causes corrosion of the housing 45, the casing 41, and the screw 18 to remain in the non-wetted portion B, and thus each handle drive mechanism portion operates smoothly.

In this embodiment, compared with the conventional hot and cold water mixing faucet 2 shown in FIG. 6, the operating force of the flow rate handle 5 and the wear of the screw portion are reduced, and the desired water discharge is achieved even at the beginning of use. The temperature is available immediately. That is, in the hot and cold water mixing faucet 42, the casing 41 of the temperature sensitive element 16 fitted and mounted in the valve unit 40 is screwed and fixed 43 to the valve unit 40 at the lower end side. In the hot water and water inflow ports 11 and 12 of the valve unit 40, the conventional water-side seat 21 (see FIG. 6) and the hot water-side seat 23 are omitted, and the spool 24 keeps the hot water and water inflow ports 11 and 1 constantly.
2 is kept open.

Further, the lower end side of the housing 45 connected to the flow rate handle 5 via the double serration ring 14 is extended to a valve seat 44 newly provided in the mixed water outflow port 13 at the intermediate portion of the valve unit 40. It is designed to come into contact with or be separated from the seat. The lower end surface side of the double serration ring 14 has a cylindrical upper end surface that spirals to come into contact with a member integrally formed on the side of the faucet body 6 having a height difference, thereby moving the housing 45 up and down. There is. That is, in the hot and cold water mixing faucet 42 of this embodiment, the housing 45 is moved up and down by opening and closing the flow rate handle 5 to control the opening and closing of the outflow port 13.

Since the other construction is substantially the same as that of the conventional hot and cold water mixing faucet 2 shown in FIG. 6, detailed description thereof will be omitted. Although illustration is omitted, a check valve is attached in the middle of the hot water and water supply pipes joined to the hot water inlet 7 and the hot water inlet 8 at the time of construction to prevent hot water and water from flowing back to each other. Done.

Next, the operation mode of the hot and cold water mixing faucet 42 having the above-mentioned structure for controlling the flow rate will be described. The operation mode in the case of adjusting the temperature of the mixed water is the same as the conventional case shown in FIG. 6, and the description thereof is omitted here. First, when the flow rate handle 5 is rotated in the opening direction, the housing 45 is rotated via the double serration ring 14. The housing 45 is screwed to a casing 41 fixed to the valve unit 40,
The rotation causes the housing 45 to move upward with respect to the casing 41 while rotating with respect to the casing 41, and separates from the valve seat seat 44 to open the mixed water outflow port 13.

Therefore, the water that has flowed in from the water inflow port 12 of the valve unit 40 and the hot water that flows in through the hot water inflow port 11 and the ports 26a and 26b of the spool 24 are mixed by the temperature sensing element 16. Mixed in the chamber, port 27 of casing 41 and port 13 of valve unit 40
Through the outflow port 9 to the shower handle 3 (see FIG. 5) side. The flow rate may be determined by operating the flow rate handle 5 to adjust the opening area of the port 13 of the valve unit 40. The temperature of the mixed water is automatically adjusted to the set temperature by the temperature sensing element 16 as in the conventional case.

By the way, by opening and closing the flow rate handle 5, the housing 45 moves up and down, and the spindle 20 and the temperature control handle 4 also move up and down accordingly. However, since the spindle 20 is serrated with the screw 18, the vertical position of the screw 18, the temperature sensing element 16 and the spool 24 is constant even if the spindle 20 moves up and down. That is, the spindle 20 and the temperature control handle 4 accompanying the opening / closing operation of the flow rate handle 5
The temperature of the mixed water does not change even if the vertical movement is performed.

The inflow ports 11 and 12 for hot and cold water are always kept open by the spool 24. The water stop state is achieved by seating the lower end side of the housing 45 connected to the flow rate handle 5 on the valve seat seat 44 of the mixed water outflow port 13. Therefore, the biasing force of the return spring 25 that biases the spool 24 is
It has no effect on the screw portion of No. 5 and is completely irrelevant.
Therefore, the screw portion will not be worn early, and the opening / closing operation of the flow rate handle 5 will not be heavy. Further, the hot water and the water have reached the mixing chamber, and the desired water discharge temperature can be immediately obtained even at the beginning of water discharge.

(Third Embodiment) FIG. 3 is a vertical sectional view of a hot and cold water mixing faucet 52 according to a third embodiment of the present invention. The improvement of this embodiment is that the O-ring 58 disposed between the inner peripheral surface of the faucet body 6 and the outer peripheral surface of the tubular valve body 56, and the inner peripheral surface of the tubular valve body 56 and the temperature sensitive element 16. By approaching the respective vertical positions of the O-rings 59 arranged between the outer peripheral surface and the outer peripheral surface, the interior of the faucet body 6 is divided into a lower water contact portion A and an upper non-water contact portion B, and By forming one set or a plurality of sets of drainage through holes 34 and 57 for communicating the non-water contact portion B inside the faucet body 6 and the outside, in the faucet body 6 and the tubular valve body 56. is there.

During the pressure resistance test, the non-wetted part B inside the faucet body 6
Water that has penetrated into the water will be drained through holes 34, 5 after the pressure resistance test.
It can be completely discharged to the outside via 7. Therefore, the hot and cold water mixing faucet 52 does not allow water that causes corrosion of the housing 55, the tubular valve body 56 and the screw 18 to remain in the non-water contact portion B, and thus operates smoothly.

In this embodiment, the cylindrical valve body 56 is provided on the inner peripheral surface side of the housing 55 rotatably attached to the flow rate handle 5 via the double serration ring 14.
The outer peripheral surface side of the tubular valve body 56 is serrated to the inner peripheral surface side of the faucet body 6. In the case of this embodiment, the flow rate handle 5 and the housing 55 only rotate but do not move up and down.

A valve seat seat 53 is attached to the lower end surface side of the tubular valve body 56, and the valve seat seat 53 is arranged so that it can be seated on the hot water outlet 9 of the faucet body 6. By providing the valve seat seat 53 on the side of the tubular valve body 56 that moves up and down, it is possible to reduce wear of the valve seat seat 53 due to repeated history. Further, the temperature sensitive element 16 is slidably inserted into the tubular valve body 56, and the tubular valve body 56 also serves as the casing 17 of the temperature sensitive element shown in FIG.

Further, the spindle 20 of the temperature control handle 4 is
A tubular portion is formed on the lower side thereof, and a screw 18 is screwed onto the inner peripheral surface side of the tubular portion. The outer peripheral surface of the screw 18 on the lower side is the cylindrical valve body 56.
Serrated on the inner surface of the. Further, in this hot and cold water mixing faucet 35, the hot water inlet 7 is formed on the lower end surface side of the faucet body 6. As a result, the supply pipe 81 connected to the hot water inlet 7 is located immediately below the hot and cold water mixing faucet 52, and an extra space is not limited.

In the hot and cold water mixing faucet 52 constructed as described above, when the flow rate handle 5 is rotated, the housing 55 integrally connected to the flow rate handle 5 is rotated, and the inner peripheral surface side of the housing 55 is rotated. Since the cylindrical valve body 56 that is screwed onto the outer peripheral surface side is serrated with the faucet body 6,
The tubular valve body 56 moves up and down. Due to this vertical movement, the valve seat 53 on the lower end surface side causes the outlet 9 of the faucet body 6 to exit.
The flow rate is controlled by controlling the opening / closing of the outflow port 9 by sitting on or leaving the seat.

On the other hand, when the temperature adjusting handle 4 is rotated, the screw 18 screwed to the inner peripheral surface side of the spindle 20 integrally connected thereto moves up and down to move the temperature sensing element 16 and the spool 54. It is moved up and down to control the opening area ratio of the hot water inflow port 11 and the water inflow port 12, and adjust the temperature of the hot water that flows out. Other configurations and basic operational effects are the same as in the case of the first embodiment described above.

(Fourth Embodiment) FIG. 4 is a vertical sectional front view of a hot and cold water mixing faucet 62 according to a fourth embodiment of the present invention. The improvement of this embodiment is that the O-ring 68 and the tubular valve element 66 disposed between the inner peripheral surface of the faucet body 6 and the outer peripheral surface of the tubular valve element 66.
The O-ring 69 disposed between the inner peripheral surface of the thermo cartridge 71 and the outer peripheral surface of the thermo cartridge 71 and the vertical position of the seal member 72 disposed between the inner peripheral surface of the thermo cartridge 71 and the temperature sensitive element 16 are close to each other. By doing, the faucet body 6
One of the through holes 34, 67 for drainage that divides the inside of the water into a lower water contacting portion A and an upper water non-contacting portion B and connects the water non-contacting portion B inside the faucet body 6 to the outside. A set or a plurality of sets are provided in the faucet body 6 and the tubular valve body 66.

Water that has entered the non-water contact portion B inside the faucet body 6 during the pressure resistance test before shipment can be completely discharged to the outside through the drainage through holes 34 and 67 after the pressure resistance test. Therefore, the hot and cold water mixing faucet 62 includes the tubular valve body 66 and the housing 5.
5 and the water that causes corrosion of the screw 18 do not remain in the non-wetted portion B, so that each handle drive mechanism portion operates smoothly.

In this embodiment, the hot water inlets 7 and 8 and the mixed water outlet 9 have substantially the same construction as in the embodiment shown in FIG. 2, and the temperature control handle 4 and the flow rate handle 5 are used. The drive mechanism for the tubular valve element 66 and the screw 18 has substantially the same configuration as that of the embodiment shown in FIG.

In this hot and cold water mixing faucet 62, the spool 54 and the temperature sensing element 16 are incorporated into a thermo cartridge 71, and the thermo cartridge 71 is fixed to the faucet body 6 by a plug body 22 and a union nut 70. ing. And
A seal member 72 is arranged between the inner peripheral surface on the upper side of the thermo cartridge 71 and the outer peripheral surface of the temperature sensitive element 16. The thermo cartridge 71 configured in this way is
A part of the upper side of the faucet body 6 fixed to the faucet body 6 is fitted into the lower side of the tubular valve body 66.

With such a structure of the temperature sensing portion, the thermo cartridge 71, which accommodates the spool 54 and the temperature sensing element 16, can be provided in the faucet body 6 simply by loosening the screw fitting of the union nut 70. Can be extracted from the
Easy to maintain.

As for the pressure acting on the mixing chamber in the thermo cartridge 71, the upward pressure in the figure acts on the sealing member 72. The pressure acting on the seal member 72 is received by the faucet body 6 via the thermo cartridge 71.

Therefore, the pressure acting in the mixing chamber does not significantly hinder the downward movement of the tubular valve element 66, and the operability of the tubular valve element 66 can be reduced. That is, the pressure receiving area of the tubular valve element 66 can be reduced, and smooth operation of the tubular valve element 66 can be ensured.

Further, the hot and cold water mixing faucet 62 prevents direct contact between the housing 55 of the flow rate handle 5 and the spindle 20 of the temperature control handle 4 and prevents co-rotation. An anti-rotation ring 73 is attached. The lower end side of the anti-rotation ring 73 is fitted and locked to the upper end side of the tubular valve element 66.

Furthermore, this hot and cold water mixing faucet 62 divides the tubular valve element 66 into two parts in the vertical direction. This is because the entire length becomes too long unless it is divided into two parts, which is inconvenient when baking the valve seat sheet 74 on the lower end surface side. In other words, the baking of the tubular valve element 66 and the valve seat sheet 74 is performed by putting the entire tubular valve element 66 in a heating mold, heating the mold, pouring rubber, and baking. This is because if the total length of the valve element 66 becomes long, the thickness of the heating die becomes too thick and the thermal efficiency becomes poor.

Further, the cylindrical valve body 6 can be obtained by dividing the upper and lower parts into two.
It is possible to make the lower half of the part 6 in contact with water from bronze, and the upper half of the part not to contact with water from brass or resin to provide rustproof and inexpensive products.

In addition to this, the valve seat sheet 74 is formed with a double annular rib on the end surface thereof which comes into contact with the seat portion on the side of the faucet body 6 so as to eliminate a sealing failure. The ribs may have more than one multiple structure.

In this hot and cold water mixing faucet 62, the spool 54 and the temperature sensing element 16 are housed in a thermo cartridge 71, and the thermo cartridge 71 is fixed to the faucet body 6. Then, a part of the upper side of the thermo cartridge 71 is fitted into the tubular valve body 66, and the thermo cartridge 71
A seal member 72 is arranged between the inner peripheral surface of the temperature sensitive element 16 and the outer peripheral surface of the temperature sensitive element 16. As a result, the tubular valve body 66 receives the supply pressure of the hot water only at its lower end surface, and the pressure receiving area for the upward acting pressure is reduced, so that the operability of the flow rate handle 5 can be reduced. .

[0053]

As described above, according to the present invention,
Water entering the non-wetted part inside the faucet body during the pressure test
Since it can be completely discharged to the outside through the drainage through hole after the pressure resistance test, water that causes corrosion does not remain in the non-wetted part, and the excellent effect of smoothly operating each handle drive mechanism part Have.

Further, in the present invention, the hot water inlet of the faucet body and the spool for determining the mixing ratio of the hot water and the water are arranged so that the hot water inlet is always kept open, and the flow of the mixed water is arranged. Since it is arranged so that the lower end surface of the housing or the tubular valve body that moves up and down by the flow rate handle can be brought into contact with the outlet side, water can be stopped at the downstream side of the mixing chamber, and it is always mixed in the mixing chamber. Since hot water is discharged, a desired water discharge temperature can be immediately obtained even at the beginning of use.

Further, since the urging force of the return spring is not directly transmitted to the flow rate handle side, the screw portion of the housing receives the urging force and is worn early, and the operation force of the flow rate handle becomes heavy. Nor.

Furthermore, in the present invention, the thermo cartridge containing the spool and the temperature sensing element is fixed to the faucet body, and the outer circumferential surface of the temperature sensing element and the inner circumferential surface of the thermo cartridge are connected. Since the seal member is disposed between the thermo cartridge and the thermo cartridge, and a part of the upper side of the thermo cartridge is fitted in the tubular valve body, the seal member can receive the upward pressure acting on the mixing chamber. It is possible to reduce the pressure receiving area of the upward pressure that acts and reduce the operability.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional front view of a hot and cold water mixing faucet according to a first embodiment of the present invention.

FIG. 2 is a partial vertical cross-sectional side view of a hot and cold water mixing faucet according to a second embodiment of the present invention.

FIG. 3 is a vertical sectional front view of a hot and cold water mixing faucet according to a third embodiment of the present invention.

FIG. 4 is a vertical sectional front view of a hot and cold water mixing faucet according to a fourth embodiment of the present invention.

FIG. 5 is a front view showing a conventional washbasin using this kind of hot and cold water mixing faucet.

FIG. 6 is a vertical sectional front view of a conventional hot and cold water mixing faucet.

[Explanation of symbols]

A ... Wetted part B ... Non-wetted part 4 ... Temperature control handle 5 ... Flow control handle 6 ... Faucet body 7 ... Hot water inlet 8 ... Water inlet 9 ... Outflow port 10 (40) ... Valve unit 16 ... Temperature sensitive Element 17 (41) ... Casing 24 (54) ... Spool 33 (34, 35, 46, 47, 57, 67) ... Through hole 45 (55) ... Housing 56 (66) ... Cylindrical valve body 71 ... Thermo cartridge 72 ... Seal member

Claims (6)

[Claims] 1. A hot and cold water mixing faucet in which the inside of the faucet body is divided into a water contact portion and a non-water contact portion, wherein the non-water contact portion and the outside of the faucet body are communicated with each other through a drainage through hole. A hot and cold water mixed faucet. 2. A temperature control handle and a flow rate control handle are provided on the same end face side on the same axis of the tubular faucet body, and the inside of the faucet body is divided into a water contact portion and a non-water contact portion. In a hot and cold water mixing faucet, a spool having a tubular valve unit mounted in the faucet body and moving between a hot water inlet and a water inlet provided near an end surface of the faucet body opposite to the handles. Is mounted in the valve unit, and a tubular casing that moves up and down by the flow control handle is mounted between the handle-side end surface in the valve unit and the spool, and the spool is opened and closed at the tip of the casing. A hot and cold water mixing faucet characterized in that the non-water contact portion and the outside of the faucet body are communicated with each other through a drainage through hole formed in the faucet body, the valve unit and the casing. 3. A temperature control handle and a flow rate control handle are provided on the same end face side on the same axis of a tubular faucet body, and the inside of the faucet body is divided into a water contact portion and a non-water contact portion. In a hot and cold water mixing faucet, a tubular valve unit is mounted in the faucet body, and moves between the hot water inlet and the water inlet provided near the end faces of the faucet body opposite to the handles, A spool that normally holds both of the inlets in an open state is installed in the valve unit, and a tubular housing that moves up and down by the flow control handle is installed between the intermediate portion in the valve unit and the end surface on the handle side. An opening / closing control of a mixed water outlet provided at an intermediate portion of the faucet body at a tip portion of the housing, wherein the non-wetted portion and the exterior of the faucet body are
A hot and cold water mixing faucet characterized in that the valve unit and the housing are communicated with each other through a drainage through hole. 4. A temperature control handle and a flow rate control handle are provided on the same end face side on the same axis of the tubular faucet body, and the inside of the faucet body is divided into a water contact portion and a non-water contact portion. In a hot and cold water mixing faucet, a spool that moves between a hot water inlet and a water inlet provided near the end faces of the faucet body on the opposite side to the handles, and normally keeps the both inlets open. A tubular valve element that is mounted in the faucet body and screwed into a tubular housing integrally connected to the flow control handle and serrated to the inner peripheral surface of the faucet body to move up and down. Attach between the middle part of the main body and the end surface on the handle side,
The outlet of the mixed water provided in the middle part of the faucet body is controlled to be opened and closed by the tip of the tubular valve body, and the non-water contact portion and the outside of the faucet body are connected to the faucet body and the tubular valve. A hot and cold water mixing faucet characterized by being communicated with a drainage through hole formed in the body. 5. A temperature control handle and a flow rate control handle are provided on the same end face side on the same axis of the tubular faucet body, and the inside of the faucet body is partitioned into a water contact portion and a non-water contact portion. In a hot and cold water mixing faucet, a spool that moves between a hot water inlet and a water inlet provided near the end surface of the faucet body on the opposite side to the handles, and holds the both inlets in an open state at all times. , The temperature sensor for moving the spool is mounted in the thermo cartridge, the thermo cartridge is mounted in the faucet body, and the rear end side of the thermo cartridge is fixed to the faucet body, and is integrated with the flow control handle. A tubular valve element that is screwed into the connected tubular housing and that moves vertically by serration coupling to the inner peripheral surface side of the faucet body is mounted between the middle part of the faucet body and the end surface on the handle side. Then, at the tip of the tubular valve body, the middle of the faucet body The outlet of the mixed water provided in the section is controlled to be opened and closed, a part of the upper side of the thermo cartridge is fitted in the lower side of the tubular valve body, and the inner peripheral surface side of the thermo cartridge and the outer periphery of the temperature sensing element are controlled. A seal member is disposed between the surface side and the non-water contact portion and the outside of the faucet body are communicated with each other through a drainage through hole formed in the faucet body and the tubular valve body. A hot and cold water mixed faucet. 6. The hot and cold water mixing faucet according to claim 5, wherein the tubular valve body is vertically divided into two and integrally joined.