JP3131687B2 - Switching valve cartridge - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a switching valve cartridge.
More particularly, the present invention relates to a switching valve cartridge suitably used for various faucets such as a hot and cold water faucet.

[0002]

2. Description of the Related Art A sliding valve unit for a faucet includes a housing, a fixed valve body fixed therein, and a movable valve body disposed in sliding contact with the fixed valve body. Some have. Such a unit selectively connects a supply flow path from an inlet on the bottom of the housing to a fixed valve body to one of first and second outflow flow paths from a movable valve body to the outside of the unit. There is. For example, as shown in FIG.
0 and 40) and the housing (30 and 40) from the side 67 of the movable valve body 60 to the first outflow channel 6a reaching the peripheral surface.
A switching valve unit (hereinafter, referred to as "conventional example 1") including a second outflow passage 6b reaching the peripheral surface of the switch valve is known. A first outflow channel extending from the back surface of the movable valve element to the peripheral surface of the housing, and a second outflow channel returning from the sliding contact surface of the movable valve element to the bottom surface of the housing and communicating from the bottom surface to the outside of the unit. A switching valve unit having a path (hereinafter referred to as "conventional example 2") is also known (Japanese Patent Application Laid-Open No. 54-7732).
9).

[0003]

However, the switching valve units of Conventional Examples 1 and 2 have the following problems. That is, in the first conventional example, the two outflow passages 6a and 6b extend from the sliding contact surface 65 of the movable valve body 60 to the front surface side of the housing (30 and 40) (hereinafter, referred to as “anti-sliding contact surface side”).
It is necessary to provide. Therefore, the housing (30 and 4)
0) is extended toward the opposite side of the sliding contact surface so that these flow paths 6a,
It is necessary to secure the formation area of the 6b, and it is difficult to reduce the size of the unit.

In the prior art 1, two outflow channels 6 are provided.
The seal member 6c for ensuring the independence (water tightness) of the first and second outlets 6a and 6b and the housing (30
And 40) a seal member 6d for preventing leakage of hot and cold water outside is provided. And these sealing members 6
Usually, c and 6d are attached to a movable part such as the spindle 7a and come into sliding contact with the inner wall surface of the housing (30 and 40) at the time of valve operation. Thus, in Conventional Example 1,
Since a plurality of dynamic seal members 6c and 6d are arranged,
The operating torque of the faucet handle was large.

On the other hand, in Conventional Example 2, a supply channel and a second outflow channel are provided side by side on the bottom surface side of the housing, and these flow channels are simultaneously opened on the bottom surface of the housing. For this reason, in the faucet body in which this unit is arranged, the internal space located upstream of the bottom surface of the housing is divided into a chamber communicating with the supply channel and a chamber communicating with the second outflow channel. Need to be partitioned. Therefore, it is necessary to add a partition or the like for performing this division in the faucet body, so that the structure of the faucet body is complicated, and the labor and cost for manufacturing the faucet body are increased. This is because, in the case of a general faucet body manufactured using a casting, even if only one partition wall is added, the labor and time required for casting are significantly increased. Further, if the two flow paths are opened at the bottom surface of the housing, the sealing structure of the bottom surface tends to be complicated. Under the circumstances described above, the appearance of a sliding valve unit capable of simultaneously solving the problems of Conventional Example 1 and the problem of Conventional Example 2 is desired.

SUMMARY OF THE INVENTION The present invention has been made in view of the above point of view, and can be easily reduced in size, can reduce the number of dynamic seal portions, and can switch without facilitating the structure of a faucet body.
It is an object to provide a valve cartridge .

[0007]

A switching valve cart according to claim 1.
The ridge has a housing, a fixed valve body, and a movable valve body.
For example, the flow path of the contact fluid in the fixed valve body, the flow passage of the first fluid flow path and a second fluid by the movement of the movable valve body arranged in a sliding contact state with respect to the fixed valve body And a cutout built into the faucet body.
In valve cartridge, said Howe the flow path of the first fluid and released from the sliding contact surface of the movable valve body to the outside of the movable valve body
It shall communicating with the peripheral surface of managing, characterized in that it is assumed that the flow path of the second fluid is returned to the stationary valve body from the movable valve member communicating with the peripheral surface of the housing. Claim 2
According to the invention, the switching valve cartridge according to the first aspect is provided.
Wherein the housing comprises a rear housing and a front housing.
The rear housing has a front opening.
The front surface of the fixed valve body is watertight with an O-ring
A valve body mounting portion which is abutted in the shape of the first fluid;
Flow passage is located in the outlet hole provided on the peripheral surface of the front housing.
Therefore, the second fluid communicates with the peripheral surface of the front housing.
Flows through the outlet hole provided on the peripheral surface of the rear housing.
Therefore, while communicating with the peripheral surface of the rear housing,
Connection between the front end of the housing and the rear end of the front housing
It is characterized by having been done. According to the third aspect of the present invention,
The switching valve cartridge according to claim 1 or claim 2.
The rear end of the temperature control cartridge
Fits into the rear end of the cartridge and connects to the temperature control cartridge
Hot water passing through the hot water mixing channel of the temperature control cartridge
Flow into the switching valve cartridge
It is characterized by. In the invention of claim 4, claim 2 or claim
Item 4. The switching valve cartridge according to any one of Items 3,
The fluid passage connected to the fixed valve body is connected to the rear housing.
Intake flow from the intake at the rear end to the back of the fixed valve element
The opening of the passage and the sliding contact surface and the back surface of the fixed valve body are substantially the same.
The inner wall surface in the direction of hot and cold water
And a supply channel that is in a substantially parallel state.
The rear housing and the fixed valve body are connected to a supply passage.
Through an O-ring arranged around the opening on the rear housing side
It is characterized by being sealed and connected. Claim 5
In the invention, the switching according to any one of claims 2 and 3 is provided.
In the valve cartridge, the flow communicated with the fixed valve body.
A body flow path is secured from the rear end inlet of the rear housing.
Inlet flow path to the back of the fixed valve body and sliding surface of the fixed valve body
And open in the same shape on the back and the inner wall
For supply that is almost parallel to the direction of hot and cold water arriving from
A flow path, and the rear housing;
A fixed valve element and an opening around the rear housing side of the supply passage.
Is connected by a seal via an O-ring
Returning the flow path of the second fluid from the movable valve body to the fixed valve body;
And the flow path for outflow of the rear housing from the back of the fixed valve body.
Through to the peripheral surface of the rear housing
Along with the partition inside the rear housing,
It is characterized in that it is divided into the outflow channel and the intake channel.
Sign. As the "move" mode of the movable valve body of the present inventions, (1) in addition to the aspect of performing only only aspects performed or (2) forward and backward rotation, embodiments for performing the forward and backward with (3) rotates Can be exemplified.

[0008]

Embodiments of the present invention will be described below. In the present embodiment, an example of application of a switching valve cartridge B according to a specific example of the present invention to a hot and cold water mixing faucet will be described. As shown in FIG. 1, this hot / water mixing faucet includes a faucet body 10, a temperature control cartridge A, a temperature control handle G, and a switching handle H, in addition to the switching valve cartridge B.

First, before describing the switching valve cartridge B, the faucet body 10 and the temperature control cartridge A will be briefly described. The faucet body (made of casting) 10 has insertion ports 11 and 12 at both left and right ends. Further, from the inner wall of the faucet body 10, the inner space is defined as a water chamber 1w, a hot water chamber 1
h, partitions 13 to 17 for partitioning into the currant room 1k and the 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. Further, the callan room 1k 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 structure is such that the piston 2q moves out and in from the tip of n. 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 a shaft insertion portion 2t is disposed at an axis position.
Then, while inserting the tubular portion 2n into the shaft insertion portion 2t,
It is attached to the root side of this tubular portion 2n.

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. The mounting portion 34 has 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 side of each positioning projection 51 is fitted into the cutout portion 32, and the back surface 56 of the valve body 50 is placed on the front surface of the valve body mounting portion 34 in a watertight manner with the O-ring k interposed therebetween. 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.

In this switching valve cartridge B, as shown in FIG. 4, a flow path on the inflow side of hot water is a flow path composed of an intake flow path v and a supply flow path 52, that is, A flow path is provided from the inlet 36 at the end (the bottom surface of the switching valve cartridge ) to the sliding contact surface 55 of the fixed valve body 50. On the other hand, as the flow path on the outflow side of hot water, “the shower selection flow path 62, that is, the sliding contact surface 65 of the movable valve body 60 is released to the outside of the movable valve body 60 and communicates with the peripheral surface of the front housing 40. Flow path "and" a flow path including a callan selection flow path 61, a callan communication flow path 53, and an outflow flow path w, that is, the path from the movable valve body 60 to the fixed valve body 50 and And a flow path communicating with the surface.

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 the same peripheral dimensions are used. However, in these figures, the fixed valve body 50 and the movable valve body
Is shown larger. First, FIG. 6 shows that the hot and cold water mixing faucet is in a water stop state. That is, the movable valve element 6
0 are in a state of being cut off from the supply flow path 52 of the fixed valve body 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. And 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. Then, when the connection with the water supply pipe 1a and the hot water supply pipe 1b is performed, the main hot and cold water mixing faucet becomes usable. At this time, the water valve port 2d of the temperature control cartridge A is connected to the water chamber 1w, the hot water valve port 2e is connected to the hot water chamber 1h, and the callan-side outlet hole 33 of the switching valve cartridge B is connected to the callan chamber 1k. Then, 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 the present embodiment, in the present invention, only one area is provided in a region extending from the sliding contact surface 65 of the movable valve element 60 to the front surface of the front housing 30, that is, on the side opposite to the sliding contact surface. Since only the flow path 62 is provided, the size of the anti-sliding contact 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 bottom surface of the rear housing 30, that is,
At the rear end of the rear housing 30, only the intake channel v is open. Therefore, in the faucet body 10, it is not necessary to divide the internal space located upstream of the bottom surface of the cartridge B into two chambers, so that the structure of the faucet body 10 is simple.

In the switching valve cartridge B shown in this embodiment, the "rear housing 30" and the "sliding contact surface 5"
5 and supply channel 52 opening in substantially the same shape on 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 fixed valve element 5 having a supply channel 52 that opens in a circular shape on the back surface 56 side and opens in a fan shape on the sliding contact surface 55 side.
Generally, “0” is sealed and connected by a seal member 5 a disposed around the opening on the back surface 56 side of the supply flow channel 52. As described above, since the fixed valve element 50 provided in the conventional product includes the supply channel 52 that opens largely on the upstream side and the opening port on the downstream side, it receives water pressure from the intake channel v. The area of the portion (hereinafter, referred to as “pressure receiving area”) is large. Specifically, the supply flow path 5 from the sealing surface 58 on the back surface 56 side of the fixed valve body 50
It stops receiving the water pressure from the intake channel v over the inner wall 59 of the second inclined shape.

Therefore, in this conventional product, the fixed valve body 50 is strongly pressed by the water pressure in a direction in which the fixed valve body 50 is separated from the seal member 5a, and there is a possibility that water leaks from the periphery of the seal surface 58. Further, the pressing force applied to the fixed valve body 50 greatly changes in accordance with the fluctuation of the water pressure from the intake channel v, and the fixed valve body 50
The pressing force applied from the sliding contact surface 55 to the sliding contact surface 65 of the movable valve body 60 greatly fluctuates, and the operating torque greatly varies.
May occur.

On the other hand, in the switching valve cartridge B,
As shown in FIG. 4, the inner wall surface 59 of the supply channel 52 is in a state substantially parallel to the direction in which the hot water reaches from the intake channel v, and the pressure receiving area of the fixed valve body 50 is reduced. I have. Therefore, a large pressing force is not applied to the fixed valve body 50 by the water pressure from the intake channel v. Therefore, the reliability of the seal portion of the switching valve cartridge B is sufficiently ensured, and the operating torque of the switching handle H can be made uniform. However, the sliding contact valve unit of the present invention
The invention is not limited to the one having the fixed valve body 50 as shown in the embodiment.

In the hot and cold water mixing faucet specifically shown in the present embodiment, one of the insertion ports 11 of the faucet body 10 is provided.
The temperature control cartridge A is inserted from the
The switching valve cartridge B is inserted from above, and both cartridges A and B are greatly different from the conventional product in that they are integrated in a watertight manner in the faucet body 10.

That is, as a conventional product, a faucet body 1
No. 0, a hot water room, a water room, a mixing room, a shower room, and a bath room are provided, and these are arranged on one axis (Japanese Patent Publication No. 6-68174). In such conventional products,
A hot water mixing chamber is formed by providing a partition inside the faucet body, and a hot water mixing section is arranged on the upstream side, and a switching section is arranged on the downstream side. Therefore, the total length of the faucet body must be increased by the length of the hot / water mixing chamber, so that there is a limit to the size of the faucet body and, consequently, the overall faucet. In addition, in this faucet, since there are many rooms (rooms) provided in the faucet body, the structure of the faucet body is complicated, and labor and time for manufacturing the faucet are increased.
The cost tends 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.

Further, as another conventional product, a hot and cold mixing faucet inserted into a faucet body after integrating a hot and cold mixing section for mixing hot and cold water and a switching section for switching a flow path is also proposed. (Japanese Patent Application Laid-Open No. Hei 9-151502).
In such a conventional product, an integrated product of the hot and cold water mixing section and the switching section is
It is necessary to insert it into a faucet body provided with a large number of partitions for forming a hot water room, a water room, a shower room and the like.
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 protrusion amounts, formation locations, and the like of all the partitions of the faucet body. Further, even if maintenance is required in one of the hot water mixing section and the switching section, it is necessary to remove both from the faucet body, which is troublesome.

On the other hand, in the hot and cold water mixing faucet of this embodiment, since the hot and cold water mixing flow path (hot and cold water mixing chamber) Y is formed inside the integrated product of the temperature control cartridge A and the switching valve cartridge B, the water faucet is formed. It is not necessary to provide a hot / water mixing chamber in the body 10 itself. Accordingly, the faucet body 10 and, consequently,
The whole hot and cold mixing faucet becomes compact. In addition, the structure of the faucet body 10 is simplified as much as the number of chambers provided in the faucet body 10 is reduced, so that the labor and cost for manufacturing a hot and cold mixing faucet can be reduced. Furthermore, if the number of chambers of the faucet body 10 is reduced as described above, the number of pools is reduced, and the possibility of freezing and destruction of the faucet is reduced.

In addition, since the cartridges A and B are inserted into the faucet body 10 from different insertion ports 11 and 12 and then integrated, the shapes and thicknesses of the cartridges A and B are relatively free. Can be determined. Specifically, according to the hot and cold water mixing faucet, each of the cartridges A and B respectively
Although it has wide portions D and E, it can be smoothly inserted into the faucet body 10. Further, 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, so that the faucet can be efficiently used. Maintenance becomes possible. Further, if the two cartridges A and B are indirectly connected via an intervening member 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.

The scope of each invention is not limited to the above-described embodiments, and various modifications can be made within the scope of each invention. That is, the input and output directions of hot water and water in the present sliding contact valve unit are not particularly limited. For example, in the switching valve cartridge B of the embodiment, the callan-side outlet hole 33 and the shower-side outlet hole 48 may be set as the input side, and the intake 36 of the rear housing 30 may be set as the output side. Specifically, one of the outlet hole 33 and the outlet hole 48 is a source water inlet directly connected to a water supply, and the other is a purified water inlet connected to a water purifier (the other is a solar inlet connected to a solar system). May be used.)

[0039]

As described above, according to the present invention, the size of the switching valve cartridge can be easily reduced, the number of dynamic seal portions can be reduced, and the structure of the faucet body does not become complicated.
You can get di .

[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 an assembling procedure of the hot and cold water mixing faucet according to the embodiment of the 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; water discharge pipe, A: temperature control cartridge, 20; temperature setting section, 22; fixed cylinder, 23; movable cylinder, 2
4; Temperature control operation shaft, 25; Stopper, 2a, 2b; Coil spring, 2c; C ring, 21; Thermostat, 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: bearing 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; 30; 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 concave portion, 47; notch portion, 48; 50; fixed valve element, 51; positioning projection, 52; supply flow path, 53; callan communication flow path, 55; sliding contact surface, 56; back surface, 60; movable valve element, 61, 62; Road, 63; auxiliary hole, 65; sliding surface, 66; back surface, 67; side surface, 70; operating member, 71; base end, 72;
3, 74; leg projection, 75; auxiliary projection, 76; mounting groove,
M: serration groove, N: handle engaging portion.

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) F16K 11/074 E03C 1/044

Claims (5)

(57) [Claims] 1. A housing, a fixed valve body, and a movable valve body.
The flow path of the fluid connected to the fixed valve body is moved by the movement of the movable valve body disposed in sliding contact with the fixed valve body, and the flow path of the first fluid and the flow path of the second fluid are moved. Road and selectively installed in the faucet body.
In the switching valve cartridge, the flow path of the first fluid is released from the sliding surface of the movable valve body to the outside of the movable valve body,
Shall communicate with the peripheral surface of the housing, the flow path of the second fluid is returned to the stationary valve body from the movable valve body Haujin
Switching valve communicating with the peripheral surface of the
cartridge. 2. The housing according to claim 1, wherein said housing comprises a rear housing and a front housing.
And one side housing, In the front opening of the rear housing, fixed to the front
A valve body whose back surface is abutted in a watertight manner with an O-ring interposed
A mounting part is provided, The first fluid flow path is provided on a peripheral surface of the front housing.
The outlet hole communicates with the peripheral surface of the front housing,
The second fluid flow path is provided on a peripheral surface of the rear housing.
Communicates with the peripheral surface of the rear housing by a defined outlet hole
Along with The front end of the rear housing and the rear end of the front housing
2. The switch according to claim 1, wherein
Valve change cartridge. 3. The switching valve cover is connected to the rear end of the temperature control cartridge.
The cartridge fits into the rear end of the cartridge and
Hot water that passes through the hot water mixing channel of the temperature control cartridge
Water is allowed to flow into the switching valve cartridge.
The method according to claim 1 or 2, wherein
Switching valve cartridge. 4. A fluid flow path connected to the fixed valve body.
From the intake at the rear end of the rear housing,
Inlet flow path to the back surface, sliding surface and back surface of the fixed valve body
And open the inner wall surface from the inlet channel.
A supply channel that is substantially parallel to the direction in which hot and cold water passes,
And with The rear housing and the fixed valve body are connected to a supply passage.
Open the rear housing Through the O-ring around the mouth
3. A seal connection is made.
The switching valve cartridge according to claim 3. 5. A fluid flow path connected to the fixed valve body.
From the intake at the rear end of the rear housing,
Inlet flow path to the back surface, sliding surface and back surface of the fixed valve body
And open the inner wall surface from the inlet channel.
A supply channel that is substantially parallel to the direction in which hot and cold water passes,
And with The rear housing and the fixed valve body are connected to a supply passage.
Through an O-ring arranged around the opening on the rear housing side
Is sealed and connected. Returning the flow path of the second fluid from the movable valve body to the fixed valve body;
And the flow path for outflow of the rear housing from the back of the fixed valve body.
Through to the peripheral surface of the rear housing
Along with The interior of the rear housing is separated by a partition wall for the outflow.
Characterized by being divided into a flow path and the intake flow path
A switching valve cartridge according to any one of claims 2 and 3.
Judge.