JPH11181849A - Hot and cold water mixing faucet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a hot and cold water mixing faucet having a high degree of freedom in shape selection or the like for a temperature adjusting cartridge and a changeover valve, which is compact and is able to simplify the construction of the body of a water faucet and is easily unreachable due to freezing. SOLUTION: This is a hot and cold water mixing faucet equipped with a faucet body 10 having inserting holes 11, 12 at both ends and with a temperature adjusting cartridge A and a changeover cartridge B inside the body 10. The temperature adjusting cartridge A is inserted from one inserting hole 11 to the inside of the faucet body and the changeover valve cartridge B is inserted from other inserting hole 12 to the inside of the faucet body 10, and both the cartridges A, B are mutually inserted and fitted in the faucet body thereby constituting a watertight coupling.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a hot and cold water mixing faucet, and more particularly to a hot and cold water mixing faucet in which handles are arranged at both ends of a faucet body.

[0002]

2. Description of the Related Art Conventionally, in a hot and cold water mixing faucet provided with a temperature control handle and a switching handle, it is considered that if each handle is arranged at both ends of a faucet body, it is compact and has a good appearance. As such a hot and cold mixing faucet, a faucet body provided with a hot water chamber, a water chamber, a mixing chamber, a shower room, and a bath room, and these are arranged uniaxially (hereinafter, referred to as "conventional example 1"). It has been proposed (Japanese Patent Publication No. 6-6817).
No. 4). In addition, a hot and cold water mixing section for mixing hot water and a switching section for switching flow paths are integrated, and then inserted into the faucet body (hereinafter, referred to as “conventional example 2”). (Japanese Patent Application Laid-Open No. Hei 9-151502).

[0003]

However, the hot and cold water mixing faucets of the prior art examples 1 and 2 have the following problems. That is, the conventional example 1 has a structure in which a partition wall is provided inside the faucet body to form a hot and cold water mixing chamber, a hot and cold water mixing section is disposed on the upstream side, and a switching section is disposed on the downstream side.
Therefore, the total length of the faucet body must be increased by the amount of the hot / cold mixing chamber, so that there is a limit to the downsizing of the faucet body and the entire faucet. Also,
In this faucet, a room (room) provided in the faucet body
Because of the large number, the structure of the faucet body becomes complicated, and the labor and cost for manufacturing the faucet are likely to increase. Furthermore, if a large number of chambers (rooms) are provided in the faucet body, a large number of water pools will be present, and the possibility of freezing and destruction of the faucet in a cold region or the like increases.

[0004] On the other hand, in prior art example 2, an integrated product of a hot and cold water mixing section and a switching section can be inserted into a faucet body provided with a large number of partitions for forming a hot water chamber, a water chamber, a shower room, and the like. Required. For this reason, it is necessary to determine the shape, thickness, and the like of each part of the integrated product in consideration of the relationship between the amount of protrusion of all the partitions of the faucet body, the formation location, and the like. For example, there are restrictions such as that this integrated product must have a shape that is reduced in diameter from one end side to the other end side, or that thick portions cannot be provided at both ends of this integrated product,
The degree of freedom in selecting the shape, thickness and the like of the hot and cold water mixing unit and the switching unit is reduced. For this reason, it may be difficult to arrange a functional component of sufficient size (temperature sensing element, sliding valve, etc.) inside the hot and cold water mixing section or the switching section.

Further, in the conventional example 2, even if maintenance is required in one of the hot and cold water mixing section and the switching section, it is necessary to remove both from the faucet body, which is troublesome. Under the circumstances described above, there is a demand for a hot and cold water mixing faucet that can simultaneously eliminate the disadvantages of the faucets of Conventional Example 1 and Conventional Example 2.

SUMMARY OF THE INVENTION The present invention has been made in view of the above viewpoints, and can simplify the structure of a faucet body, and is compact, has a low possibility of freezing and destruction, and has a temperature control cartridge and a switch. It is an object of the present invention to provide a hot and cold water mixing faucet having a high degree of freedom such as selection of a shape of a valve cartridge.

[0007]

According to the first aspect of the present invention, there is provided a water faucet mixing faucet comprising a faucet body having insertion ports at both ends, a temperature control cartridge and a switching valve cartridge disposed in the faucet body. A hot and cold water mixing faucet, wherein the temperature control cartridge is inserted into the faucet body from one insertion port and the switching valve cartridge is inserted into the faucet body from the other insertion port, The temperature control cartridge and the switching valve cartridge are connected to each other in the body in a watertight manner by being inserted into each other.

[0008]

Embodiments of the present invention will be described below. In the present embodiment, a specific example of a hot and cold water mixing faucet according to the present invention will be described. This faucet includes a faucet body 10, a temperature control cartridge A, a switching valve cartridge B, a temperature control handle G, and a switching handle H, as shown in FIG.

The faucet body (made of casting) 10 has insertion ports 11 and 12 at both left and right ends. Also, from the inner wall, partition walls 13 to 17 for partitioning the internal space into a water chamber 1w, a hot water chamber 1h, a curan room 1k, and a shower room 1s protrude. The water chamber 1w is connected to the water supply pipe 1a, and the hot water chamber 1h is connected to the hot water pipe 1b. In addition, Karan room 1
k is connected to a water discharge pipe 1c, and the shower room 1s is connected to a shower head (not shown).

As shown in FIG. 2, the temperature control cartridge A has a temperature setting section 20 and a thermostat section 21 arranged in series. Among them, the temperature setting unit 20
Includes a fixed cylinder 22, a movable cylinder 23, a temperature control operation shaft 24, and a stopper 25. Further, the fixed cylinder 22 and the movable cylinder 23 are screw-fitted, and the movable cylinder 23 can be screwed inside the fixed cylinder 22. Further, the movable cylinder 23 and the temperature control operation shaft 24 are serrated and fitted, and both can rotate integrally. The stopper 25 is pressed on its front side by two large and small coil springs 2a and 2b, and pressed on its back side by a retaining C-ring 2c. Side that is spaced apart from the In the temperature setting section 20, when the temperature adjustment handle G is rotated, the movable cylinder 23 slides left and right while rotating. At this time, the stopper 25 also slides left and right in conjunction with the movable barrel 23, and moves to a desired position.

The thermostat section 21 includes a thermo housing 26, a thermo element 27, a mixing valve 28, and a support cylinder 29. Of these, the thermo housing 26 is configured using a cylindrical body whose outer diameter is reduced stepwise toward the rear end. Further, a water valve port 2d connected to the water chamber 1w and a water valve port 2e connected to the hot water chamber 1h are provided on the inner peripheral surface. A lid 2g having an insertion hole is attached to the opening on the front end side. Further, the rear end of the housing 26 is a connection portion with a switching valve cartridge B described later. An O-ring 2k is mounted in a circumferential groove provided on the rear end side peripheral surface of the housing 26.

The thermo-element 27 is inserted into the thermo-housing 26, and is provided on both sides of the wide flange 2m.
It has a tubular portion 2n and a temperature sensing portion 2p. And temperature sensing part 2p
Is filled with a wax that expands and contracts with a change in temperature.
The piston 2q has a structure in which the piston 2q moves out and in from the tip of the. The distal end of the tubular portion 2n is exposed to the outside of the thermo housing 26 through the insertion hole of the lid 2g. The tip of the piston 2q is the stopper 2
5 is in contact with the back. The mixing valve 28 has a substantially cylindrical outer shape, and the shaft insertion portion 2t is disposed at the axis position. The tubular part 2n is attached to the root side of the tubular part 2n while the tubular part 2n is inserted through the shaft insertion part 2t.

The support cylinder 29 is formed of a substantially cylindrical body having a tapered outer diameter on the front end side and a stepped outer diameter on the rear end side. Then, the thermo-element 24 is elastically supported in a state where the temperature-sensitive portion 2p enters therein. That is, the front end face of the support cylinder 29 is
m, and the front end of the return spring 2x abuts against the orbital step 2w on the rear end side in a compressed state. The rear end of the return spring 2x is pressed by a C ring 2y disposed on the inner wall surface on the rear end side of the thermo housing 26. For this reason, the mixing valve 28 is integrated with the thermoelement 27 and is urged in a direction to expand the hot water valve opening 2e.

A water passage (not shown) is provided in the inclined wall 2z on the front end side of the support cylinder 29. For this reason, the water flowing in from the water valve port 2d and the hot water port 2
e, a flow path formed between the inner peripheral surface of the support cylinder portion 29 and the outer peripheral surface of the temperature sensing portion 2p through the hot water passage hole, that is, the hot water mixing flow passage while the water flowing from the e is appropriately mixed. Y flows into the switching valve cartridge B described later.

In the above-described temperature control cartridge A, the temperature control handle G is rotated to move the stopper 25 to a position corresponding to the set temperature, and the reference surface at the tip of the piston 2q is set. If there is a difference between the temperature of hot water passing through the hot water mixing flow path Y and the set temperature, the temperature sensing unit 2
The wax in p expands and contracts as appropriate. This allows
The projecting amount of the piston 2q is adjusted, and the mixing valve 28 slides left and right integrally with the thermoelement 24, and the water valve port 2d
The opening ratio of the hot water valve opening 2e is corrected, and the temperature of the hot water is maintained at the set temperature.

Next, the switching valve cartridge B will be described. As shown in FIG. 3, the switching valve cartridge B includes a rear housing 30, a front housing 40, a fixed valve body 50, a movable valve body 60, and a switching operation member 70. Among them, the rear housing 30 is an integrally molded product manufactured using a resin or the like, and has a substantially cylindrical outer shape. However, a locking arm 31 with a hole protrudes from two places at the front end. In the front end portion of the rear housing 30, a substantially rectangular cutout portion 32 is provided at a position located on the base side of each locking arm 31.

Further, a curan side outlet hole 33 is provided in the peripheral surface of the intermediate portion of the rear housing 30. Further, a mounting groove for mounting the O-ring h is provided in a peripheral surface portion located in front of the outlet hole 33. Further, a front opening of the rear housing 30 is a valve body mounting portion 34 which is recessed in a step shape. Further, the mounting portion 34 includes a mounting groove s for fitting a specially shaped O-ring k having a T-shaped portion added to the inner peripheral side. The mounting portion 34 has an opening d (a mere opening obtained by removing waste), an intake passage hole (a substantially fan-shaped plane with a central angle of about 90 degrees) q, and an outflow Through hole (center angle is 9
(A substantially fan-shaped plane around 0 degrees) r.

As shown in FIGS. 3 and 4, a partition wall 3 is provided between the middle of the rear housing 30 and the front end.
The partition wall 35 divides an intake channel v and an outflow channel w. The intake flow channel v has the intake 36 at the rear end of the rear housing 30 as an entrance, the intake passage hole q as an exit, and the flow channel w for outflow.
The outflow passage hole r serves as an inlet, and the callan-side outlet hole 33 serves as an outlet. The outer diameter of the rear end of the rear housing 30 is set to be large enough to fit the rear end of the thermo housing 26 described above.

The front housing 40 is also an integrally molded product made of resin or the like, and has a substantially cylindrical shape with a bottom as shown in FIG. A shaft insertion portion 43 penetrating through the inside and outside of the housing 40 is raised substantially in the center of the front surface in a substantially cylindrical shape. Further, a mounting groove into which the O-ring m is fitted is provided on the front end side of the peripheral surface. Further, two locking arms 3 are provided on the rear side of the peripheral surface of the front housing 40.
1 is provided with a locking concave portion 45 having a shape substantially reversed from the concave and convex portions, and a protrusion that can be fitted into a hole of the locking arm 31 is provided at a substantially central position of each concave portion 45. The rear end side of each recess 45 is formed as a substantially rectangular notch 47. Further, two shower-side outlet holes 48 are provided at an intermediate portion of the peripheral surface of the front housing 40. The front and rear housings 30 and 40 are connected by aligning the locking arms 31 with the corresponding locking recesses 45 and locking the latter projections in the former holes.

Fixed valve element (for example, made of ceramics) 50
As shown in FIG. 3, is formed in a substantially disk shape, and has two positioning projections 51 on the peripheral surface. As shown in FIGS. 3 and 4, the fixed valve element 50 has a supply channel 52 and a callan communication channel 53 on a sliding contact surface 55 and a rear surface 56 (front and rear surfaces) of the valve element 50. , The center angle of which is approximately 90 degrees, and is open in a substantially fan-shaped plane. In the fixed valve body 50, the lower half of each positioning projection 51 is fitted into the cutout portion 32, and the back surface 56 of the valve body 50 is watertight with the front surface of the valve body mounting portion 34 sandwiching the O-ring k. While being attached to the front housing 30. Thereby, the supply channel 52
Are in communication with the intake channel v, and the callan communication channel 53 is in communication with the outflow channel w.

Movable valve element (for example, made of ceramics) 60
Also, as shown in FIG. 3, it has a substantially disk shape. Then, as shown in FIG. 4, a flow path for curan selection (having a central angle of about 18
A shower selecting flow path (a flat fan shape having a central angle of about 90 degrees) 62 provided at a sliding contact surface 65 and a side surface 67 of the valve body 50 is provided. I have. Further, as shown in FIG. 5, a bottomed auxiliary hole 63 is provided on the back surface 66 of the movable valve body.

The switching operation member 70 is an integrally molded product made of resin or the like. As shown in FIG. 3, a substantially skirt-shaped base end portion 71 and a substantially axially protruding portion from its front end are provided. And a shaft main body 72 provided. Further, a pair of leg-shaped projections 73 and 74 hang down from the inclined inner wall surface of the base end portion 71 in a substantially C shape. Also, both projections 7 on this inner wall surface
An auxiliary projection 75 hangs down from a portion sandwiched between 3, 74. Further, these projections 73, 7
A mounting groove 76 is provided which surrounds 4 and 75 in a circular shape and into which an O-ring n is fitted. A mounting groove into which the O-ring p is fitted is provided at the base of the shaft main body 72. Further, a serration groove M is provided in an intermediate portion, and a front end portion is a substantially drum-shaped handle engaging portion N.

The switching operation member 70 is mounted on the front housing 40 with the serration groove M and the handle engaging portion N exposed in front of the shaft insertion portion 43. Further, at the base end portion 71 of the switching operation member 70, both leg-shaped projections 73 and 74 are inserted at both ends (both ends along the rotation direction of the movable valve body 60) of the callan selecting flow path 61, The movable valve body 60 is attached with the auxiliary projection 75 inserted into the auxiliary hole 63. By this attachment, the two side surfaces a and b of the leg-like projections 73 and 74 come into contact with the inner wall surface of the flow passage 61, and the auxiliary projection 75 engages with the auxiliary hole 63. By rotating 70, the movable valve body 60 also rotates integrally.

Next, an example of use of the switching valve cartridge B will be described with reference to FIGS. In the present embodiment, the fixed valve body 50 and the movable valve body 60 having substantially equal peripheral dimensions are used.
In these figures, the fixed valve body 50 is shown larger for convenience of explanation. First, FIG. 6 shows that the hot and cold water mixing faucet is in a water stop state. That is, the movable valve body 60
Are in a state of being cut off from the supply channel 52 of the fixed valve element 50.

When it is desired to discharge hot and cold water from the callan, as shown in FIG. 7, the switching handle H (disposed on the right side of the faucet body 10) is rotated toward the user. As a result, the movable valve element 60 rotates, the flow path 61 for selecting the callan communicates with both the flow paths 52, 53 of the fixed valve element 50, and the flow path for intake v and the flow path for outflow w are connected. Water can be spouted.

On the other hand, when it is desired to discharge hot and cold water from the shower head, as shown in FIG. 8, the switching handle H is rotated to the side opposite to the user. Thereby, the movable valve body 60
Rotates, and the shower selecting flow path 62 communicates with the supply flow path 52 of the fixed valve body 50, so that shower water can be discharged. Furthermore, in any case of water discharge, the flow rate is adjusted by selecting the operation amount of the handle H and adjusting the area where each of the selection flow paths 61 and 62 and the supply flow path 52 overlap.

The cartridges A and B are incorporated in the faucet body 10 as follows. That is, as shown in FIG. 9, the thermostat section 21 and the temperature setting section 22 are sequentially inserted from the left insertion port 11 of the faucet body 10, the temperature control cartridge A is inserted as a whole, and the right insertion port 12 is inserted. , The switching valve cartridge B is inserted.
Then, in the faucet body 10, the thermo-housing 2
6 is fitted into the rear end of the rear housing 30, and both cartridges A and B are connected in a watertight manner. Then, FIG.
As shown in FIG. 7, fastening nuts 81 and 82 are screwed into both ends of the faucet body 10, a temperature control handle G is attached to an exposed portion of the temperature control operation shaft 24, and an exposed portion of the switching operation member 70 is attached. Attach the switching handle H to M and N.

When the connection with the water supply pipe 1a and the hot water supply pipe 1b is established, the hot and cold water mixing faucet can be used.
At this time, the water valve port 2d of the temperature control cartridge A is
, The hot-water valve port 2e is connected to the hot-water chamber 1h, the callan-side outlet hole 33 of the switching valve cartridge B is connected to the callan chamber 1k, and the shower-side outlets 48, 48 are connected to the shower room 1s. . In this hot and cold mixing faucet, as shown in FIG. 2, a hot and cold mixing channel Y is formed inside an integrated product of the two cartridges A and B, and the curan chamber 1k circulates around the hot and cold mixing channel Y. become.

As specifically shown in this embodiment, in the present invention, the temperature control cartridge A and the switching valve cartridge B
Since the hot and cold water mixing flow path (hot and cold water mixing chamber) Y is formed inside the integrated product, it is not necessary to provide the hot and cold water mixing chamber in the faucet body 10 itself. Therefore, the faucet body 10 and, consequently, the hot and cold water mixing faucet as a whole become compact. Also, as the number of rooms provided in the faucet body 10 is reduced,
The structure of the faucet body 10 is simplified, and the labor and cost for manufacturing the faucet can be reduced. In addition, since the faucet body 10 is generally made of a casting, even if only one chamber is reduced, the manufacturing labor and cost are greatly reduced. Further, as described above, if the number of chambers of the faucet body 10 is reduced, the number of pools is reduced.
The possibility of freezing and destruction of the faucet is reduced.

In the present invention, each of the cartridges A and B
Are inserted into the faucet body 10 from different insertion ports 11 and 12, and then integrated, the shape and thickness of each of the cartridges A and B can be relatively freely determined. For example, in the embodiment, each of the cartridges A and B is
Although it has wide portions D and E, it can be smoothly inserted into the faucet body 10. In this specific example, both cartridges A and B are previously integrated into
When trying to insert from the right insertion slot 12, the thick portion D of the temperature control cartridge A cannot pass through the partition wall 17,
Insertion of this one piece is not possible.

Further, according to the present invention, when maintenance is required for one of the cartridges A and B, only one of the cartridges (A or B) needs to be removed from the faucet body 10. Therefore, efficient maintenance of the faucet becomes possible. In addition, one cartridge (A or B) can be replaced with another type of cartridge to improve the performance of the hot and cold water mixing faucet or to change the function.

In this embodiment, the temperature control cartridge A
Of the switching valve cartridge B is fitted into the end of the switching valve cartridge B, but the present invention is not limited to this.
The cartridges A and B may be inserted into each other and connected in a watertight manner, for example, by fitting the end of the switching valve cartridge B into the end of the cartridge. This connection is not limited to directly connecting the members constituting the housings of the cartridges A and B,
The housings of the cartridges A and B may be indirectly connected via a member such as a relay pipe previously attached to one of the cartridges A and B. If the two cartridges A and B are connected indirectly through an intervening material such as a predetermined relay pipe, the total length of the integrated product including both cartridges A and B can be changed. Therefore, the cartridges A and B can be generally used for the faucet bodies 10 of various lengths.

In the switching valve cartridge B shown in the present embodiment, the "rear housing 30" and the "sliding surface 5"
Supply channel 52 opening in substantially the same shape on rear surface 5 and back surface 56
Is largely different from the conventional product in that the fixed valve body 50 "is sealed and connected via an O-ring k disposed around the opening of the supply flow path 52 on the rear housing 30 side. That is, in the conventional product, as shown in FIG. 10, "the rear housing (bottom member) 3 forming the cylindrical intake flow path v"
0 "and" a circular opening on the back surface 56 side, and the sliding contact surface 55
Is fixedly connected to the fixed valve element 50 having the supply flow path 52 that opens in a fan shape on the side of the supply path 52 by a seal member 5 a disposed around the opening on the back surface 56 side of the supply flow path 52. Is common.

The fixed valve body 50 provided in such a conventional product
Since the supply channel 52 has a large opening on the upstream side and a small opening on the downstream side, the area for receiving the water pressure from the intake channel v (hereinafter, referred to as “pressure receiving area”) is large. Has become. Specifically, the fixed valve body 50
The water pressure from the intake flow channel v is received from the seal surface 58 on the back surface 56 side of the supply flow channel 52 to the inclined inner wall surface 59 of the supply flow channel 52. Accordingly, the fixed valve element 50 is strongly pressed by this water pressure in a direction in which the fixed valve element 50 is detached from the seal member 5a, and there is a possibility that water leaks from the periphery of the seal surface 58. In addition, the pressing force applied to the fixed valve body 50 greatly fluctuates in accordance with the fluctuation of the water pressure from the intake channel v, and the fixed valve body 5
The pressing force applied to the sliding contact surface 65 of the movable valve body 60 from the sliding contact surface 55 of 0 may fluctuate greatly, causing a large variation in the operating torque.

On the other hand, in the present switching valve cartridge B, as shown in FIG.
However, the state is substantially parallel to the passage direction of the hot and cold water arriving from the intake channel v, and the pressure receiving area of the fixed valve body 50 is small. Therefore, since a large pressing force is not applied to the fixed valve body 50 by the water pressure from the intake passage v, the reliability of the seal portion is sufficiently ensured and the operating torque of the switching handle H is made uniform. Can be planned.

As shown in FIG. 4, the switching valve cartridge B is provided with a flow path on the outflow side of the hot and cold water, namely, the “flow path 62 for shower selection, that is, from the sliding contact surface 65 of the movable valve body 60. A flow path which is opened to the outside of the valve body 60 and communicates with the peripheral surface of the front housing 40 "and a flow path including a flow path for callan selection 61, a flow path for callan communication 53, and a flow path w for outflow, The flow path that returns from the movable valve body 60 to the fixed valve body 50 and communicates with the peripheral surface of the rear housing 30 is provided.

That is, in the conventional product shown in FIG. 10, as the flow path on the outflow side of hot water, the flow path 6a on the shower side from the back surface 66 of the movable valve body 60 to the peripheral surface of the housing (30 and 40) is used. And "the flow channel 6b on the callan side from the side surface 67 of the movable valve body 60 to the peripheral surface of the housing (30 and 40)". In such a conventional product, two outflow passages 6a and 6b are provided from the sliding contact surface 65 of the movable valve body 60 to the front side of the housing (30 and 40) (hereinafter, referred to as "anti-sliding contact surface side"). There is a need. For this reason, it is necessary to lengthen the housings (30 and 40) on the opposite side of the sliding surface to secure the formation area of these flow paths 6a and 6b, and it has been difficult to reduce the size of the switching valve cartridge. . In addition, seal members 6c and 6d attached to movable parts such as the spindle 7a and slidably contacting the inner wall surfaces of the housings (30 and 40) at the time of valve operation are arranged at a plurality of locations, and the operating torque of the switching handle and the like is reduced. It was getting bigger.

Further, as other conventional products, an outflow passage extending from the back surface of the movable valve element to the peripheral surface of the housing, an outflow path returning from the sliding contact surface of the movable valve element to the bottom surface of the housing, and flowing out of the housing from the bottom surface. There is also known a device provided with a flow path for use (Japanese Patent Application Laid-Open No. 54-77329). In this conventional product, an intake channel and an outflow channel are provided on the bottom side of the housing,
These channels open simultaneously at the bottom of the housing. For this reason, in this faucet body in which the conventional product is arranged, the internal space located upstream of the bottom surface of the housing is
It is necessary to divide the chamber into a chamber communicating with the intake channel and a chamber communicating with the outflow channel. Therefore, in the body for faucet,
Since it is necessary to add a partition or the like for performing this division, the structure of the faucet body is complicated, and the labor and cost for manufacturing the faucet are increased.

On the other hand, in the switching valve cartridge B, since only one flow path 62 is provided on the side opposite to the sliding surface, the size of the opposite sliding surface can be reduced. Further, since two flow paths are not provided side by side on the side opposite to the sliding surface, it is sufficient to dispose only the O-ring p of the shaft body 72 as a dynamic sealing member. Therefore, the operation torque when operating the switching handle H can be reduced. Further, the rear housing 3
At the bottom surface of 0, that is, at the rear end of the rear housing 30, only the intake channel v is open. Therefore, in the water faucet body 10, the internal space located upstream of the bottom surface of the cartridge B does not need to be divided into two chambers, so that the structure is simple.

[0040]

As described above, according to the present invention, a compact hot and cold water mixing faucet having a faucet body having a simple structure can be obtained. According to the hot and cold water mixing faucet, the possibility of freezing and destruction is reduced, and the degree of freedom in selecting the shape of the temperature control cartridge and the switching valve cartridge is increased.

[Brief description of the drawings]

FIG. 1 is a schematic front view illustrating a part of a hot and cold water mixing faucet according to an embodiment of the present invention in a longitudinal section.

FIG. 2 is a schematic longitudinal sectional view showing the structure of a temperature control cartridge.

FIG. 3 is a perspective view for explaining each component of the switching valve cartridge.

FIG. 4 is a longitudinal sectional view showing the structure of a switching valve cartridge.

5A is a plan view for explaining a relationship between a leg-shaped projection or the like and a movable valve body, and FIG. 5B is a vertical sectional view taken along line 5-5 in FIG. 5A.

FIG. 6 is a schematic cross-sectional view illustrating a positional relationship among a fixed valve body, a movable valve body, and leg-shaped projections in a water stop state.

FIG. 7 is a schematic cross-sectional view illustrating a positional relationship among a fixed valve body, a movable valve body, and leg-shaped projections in a state of water discharge.

FIG. 8 is a schematic cross-sectional view illustrating a positional relationship among a fixed valve element, a movable valve element, and leg-shaped projections in a state of shower water discharge.

FIG. 9 is a front view showing only a faucet body for illustrating a method of assembling the hot and cold water mixing faucet according to the embodiment of the present invention in a longitudinal section.

10A is a longitudinal sectional view showing the structure of a switching valve cartridge according to a conventional example, and FIG. 10B is a rear view of the fixed valve body shown in FIG. 10A.

[Explanation of symbols]

10; faucet body, G: temperature control handle, H: switching handle, 11, 12; insertion port, 1w; water room, 1h; hot water room, 1k; currant room, 1s; shower room, 13-17;
Partition wall, 1a; water supply pipe, 1b; hot water supply pipe, 1c;
A: temperature control cartridge, 20; temperature setting unit, 22; fixed cylinder, 23; movable cylinder, 24; temperature control operation shaft, 25; stopper, 2a, 2b; coil spring, 2c;
21; thermostat section, 26; thermo housing, 2
d; water valve port, 2e; hot water valve port, 2g; lid, 2k; O-ring, 27; thermoelement, 2m; flange, 2n; tubular part, 2p; thermosensitive part, 2q; piston, 28; Valve 2
t: shaft insertion portion, 29; support cylinder portion, 2w; step portion, 2x; return spring, 2y; C ring, 2z; wall portion, B: switching valve cartridge, h, k, m, n, p; , 3
0; rear housing, 31; locking arm, 32; cutout portion, 33; curan side outlet hole, 34; valve body mounting portion, s; mounting groove, d; opening, q, r; passage hole, 35; Wall, 3
6; intake, v; intake channel, w; outflow channel, 40;
Front housing, 43; shaft insertion portion, 45; locking recess,
47; notch, 48; shower-side exit hole, 50; fixed valve body, 51; positioning projection, 52;
3; Callan communication channel, 55; Sliding contact surface, 56; Back surface, 6
0; movable valve element, 61, 62; selection flow path, 63; auxiliary hole, 65; sliding surface, 66; back surface, 67; side surface, 70; operation member, 71; base end portion, 72; , 73, 74;
Leg-like projection, 75; auxiliary projection, 76; mounting groove, M: serration groove, N: handle engaging portion.

Claims (1)

[Claims] 1. A hot and cold water mixing faucet comprising a faucet body having insertion ports at both ends, a temperature control cartridge and a switching valve cartridge disposed in the faucet body, wherein the temperature control cartridge is The switch valve cartridge is inserted into the faucet body from one insertion port, and the switching valve cartridge is inserted into the faucet body from the other insertion port, and the temperature control cartridge and the switching valve cartridge are mutually inserted in the body. A hot and cold water mixing faucet, wherein the water and water mixing faucet is configured to be connected in a watertight manner by being fitted.