JPH0813558A - Faucet - Google Patents

Abstract

PURPOSE:To make an arbitrary use stabilizable in preventing any looseness in a cover from occurring by letting a stopper drop into space between a body with a built-in valve element and this cover and then joining it by means of threads formed in each of both inner and outer circumferences. CONSTITUTION:Each of hot and cold water is fed out of a feed water pipe 5b and a hot water feed pipe 5b connected to the lower end of a faucet body 3, and hot and cold water can be mixed by operations of two valve elements 7 and 8 stored in a cartridge type housing 6 built in an inner part of the body 3. Next, this mixed one flows down around the body 3 and a gap with an crust material 2, and it is discharged out of a discharge pipe 2 in a body with the crust material 2. In the constitution, a lever 9 operating each motion of the valve elements 7 and 8 a cover 4 piercing through a shifter 9a re installed there, then the body 3 and the cover 4 are joined together with threads 3h and 4a formed in each of both inner and outer circumference. In this case, a stopper 13 is dropped in a gap between the cover 4 and the body 3, whereby a rotation around the center of the cover 4, having the looseness prevented from occurring.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to, for example, a single faucet, a single lever type hot and cold water mixing faucet, and various other types of faucets.

[0002]

2. Description of the Related Art A single-lever type hot and cold water mixing faucet has two disc-shaped valve plates superposed in a flow path inside the main body, one valve plate is fixed and the other valve plate is operated. It is a movable type that is connected to a lever. The position of the movable-side valve plate with respect to the fixed-side valve plate is changed by a lever, so that the mixing ratio of hot water and water can be set and the flow rate can be adjusted in accordance with the degree of matching of the holes formed in these valve plates. .

An example of such a hot and cold water mixing faucet is disclosed in Japanese Utility Model Publication No. 61-123271.

In this hot and cold water mixing faucet, a fixed valve plate located at the lower end of a cartridge type block is sealed and joined to the main body side by packing, and is held by a cover that fixes the block to the upper end of the main body.

[0005]

The cover is fixed by screwing a male screw formed on the outer periphery of the lower end of the cover into a female screw on the inner periphery of the upper end of the main body, and restrains and fixes the cartridge type block. In addition to this fixing, it is also an important role of the cover to properly compress the packing incorporated between the fixed valve plate and the main body side to secure the sealing pressure.

However, in the case where the cover is connected to the main body side by screw connection, even if the cover is connected with an appropriate tightening strength at the stage of factory shipment, the screw connection may be loosened by vibration or other external force. is there. That is, if the screws are only tightened and the looseness exceeds a critical value, the effect of the tightening is lost and the looseness of the cover cannot be avoided.

If such looseness of the cover occurs, the sealing pressure of the packing between the fixed valve plate and the main body side may be insufficient and water may be leaked. In addition, since the cover and the main body are joined by screws formed on the inner and outer circumferences of each, a tool is required for disassembling, assembling and tightening when loosening occurs, and there is a difficulty in dealing with it in general households etc. .

The problem to be solved in the present invention is, in a faucet in which a main body containing a valve element and a cover are joined by respective inner and outer peripheral screws, the cover is securely prevented from rotating and a tool is not required for assembly and disassembly. Is possible.

[0009]

According to the present invention, there is provided a main body having a fluid inlet and an outlet and water passages for communicating these inlets and outlets with each other, and a main body provided with a valve element in the water passage, and connected to the valve element. A water faucet including a cover through which a part of the operating means penetrates and is connected to the main body, wherein the main body and the cover are joined by screws formed on the inner and outer circumferences of the main body and the cover. In addition, a rotation stop mechanism for restricting rotation of the cover around the core is provided.

In such a structure, the rotation stopping mechanism is provided with a stopper which is detachably attached to the main body, regulates the rotation around the core and is connected to the main body, and the stopper and the cover are mutually connected. It can be configured by an engagement relationship that restricts the movement of the.

In this case, the engagement relationship between the stopper and the cover can be constituted by the splines formed on the inner and outer circumferences of each, and the outer peripheral surface of the stopper is provided with a flank for notifying the tool. It may be formed.
Further, the restraint protrusion may be formed on the end face of the main body which covers the stopper, and the stopper may be provided with an opening or a cutout that can be inserted into the restraint protrusion.

Further, the valve element is housed in a cartridge-type housing which can be attached to and detached from the main body, and a restraining protrusion is provided on the end face of the housing facing the outside of the main body, and the housing and the main body are engaged with each other by projections or recesses. The cutout formed in the crab and the projection engaging with the cutout may be connected so as to be restrainable to each other.

Further, a connection between the inner peripheral wall forming the opening or notch and the outer peripheral wall of the restraining protrusion is provided with a shallow groove and a minute protrusion fitted therein, and the stopper is formed by the protrusion and the shallow groove. It is also possible to have a structure in which the main body can be restrained.

Further, the main body may be made of synthetic resin.

[0015]

Since the cover is connected to the main body via the rotation stopping mechanism, even if the cover and the main body are joined by the inner and outer peripheral screws, the loosening of the screw joint can be prevented.

If a rotation stopping mechanism having an engagement relationship for restricting the circumferential movement between the stopper and the cover is used,
The rotation of the cover is prevented by the stopper that is restrained on the main body side even if the action force to rotate the cover acts.

Further, if such an engagement relationship is constituted by a spline, the cover and the stopper can be easily manufactured by general machining.

By providing the stopper with a flank for hooking a tool, even if the stopper has a structure to be dropped into the cover, it is possible to use the flank when removing the stopper.

Further, if the stopper is restrained to the main body side by the shallow groove and the minute projection fitted therein, even if the posture of the main body is changed and the stopper is turned upside down, it can fall out of the main body. Absent.

Further, when the main body is made of synthetic resin, even if it cannot be strongly joined to the cover due to the mechanical properties of the synthetic resin, even if it is loosely joined to the cover by the rotation stop mechanism, the cover is held without loosening. it can.

[0021]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a side vertical sectional view of a hot and cold water mixing faucet of the present invention, and FIG. 2 is a front vertical sectional view of an essential part showing a water supply pipe and a connection structure of a flow path with the hot water supply pipe.

In the figure, the main body of the hot and cold water mixing faucet is composed of two outer shell members 1 and 2 made of a pipe material, a main body 3 made of synthetic resin housed in the outer shell members 1, and a cover integrated with the upper end of the main body 3. 4 and.

A water supply pipe 5a and a hot water supply pipe 5b are connected to the lower end of the main body 3 as supply pipes as shown in FIG.
Due to the operation of the valve element housed in the cartridge type housing 6 incorporated in the inside of the main body 3
Around and the outer shell member 2 and is discharged from the water discharge pipe 2a integral with the outer shell member 2.

At the lower end of the housing 6, there is provided a connection seat 6a for connecting the flow paths from the water supply pipe 5a and the hot water supply pipe 5b. As shown in FIG. 2, the connection seat 6a has a water hole 6b.
The hot water hole 6c and the mixed water outflow hole 6d (see FIG. 1) are provided. Further, a retainer block 6e for holding the built-in valve element within its movable range is inserted and fixed to the upper end side of the housing 6, and the top block 6f is integrally connected.

A fixed valve plate 7 is installed in a fixed position on the upper surface of the connection seat 6a inside the housing 6 and fixed, and a movable valve plate 8 is placed on the fixed valve plate 7 in an overlapping manner.
The movable valve plate 8 is slidable with respect to the fixed valve plate 7.

3A and 3B are plan views of the fixed valve plate 7 and the movable valve plate 8, respectively. These valve plates 7 and 8 are made of ceramics.

The fixed valve plate 7 has a water hole 7a and a hot water hole 7b which communicate with the water supply pipe 5a and the hot water supply pipe 5b, and a mixed water hole 7c which can communicate with the mixed water outflow hole 6d of the housing 6.
Open. On the other hand, the movable valve plate 8 has a planar shape such that all the water holes 7a and the hot water holes 7b can be closed or partially opened by vertical movement and swiveling operation in the figure, and the mixed water is provided in the center. A communication hole 8a that can be aligned with the working hole 7c is opened.

FIG. 4 is a plan view of the movable valve plate 8 superposed on the fixed valve plate 7.

In the state shown in FIG. 3A, the movable valve plate 8 covers both the water hole 7a and the hot water hole 7b of the fixed valve plate 7 to shut off the water supply side and the flow paths from the hot water supply side. It's watering. Then, when the movable valve plate 8 moves upward in the figure in this state, the water hole 7a and the hot water hole 7b open as shown in FIG. Open at the same valve opening. This makes it possible to set the flow rate of the mixed water by increasing the amount of the mixed water flowing from the communication hole 8a to the mixed water outflow hole 6d with the amount ratio of hot water to water being 1: 1 according to the valve opening degree. .

Further, FIG. 4C shows a state in which the movable valve plate 8 in the valve open position in FIG. 4B is rotated counterclockwise around its core. At this time, only the water hole 7a is opened, while the hot water hole 7b is fully closed, and only water is supplied to the water discharge pipe side. Further, when the movable valve plate 8 is rotated in the clockwise direction in the opposite direction, the movable valve body 8 in FIG.
Only the hot water hole 7b is opened.

Further, when the movable valve plate 8 is pulled straight down obliquely to the lower right from the state shown in FIG. 3C, both the water hole 7a and the hot water hole 7b are closed by the movable valve plate 8 and the water stop state is obtained. Return to.

Such movement of the movable valve plate 8 is operated by the lever 9 protruding from the upper end of the main body 1. Then, as shown in FIG. 1, a shifter 9a is installed between the lever 9 and the movable valve plate 8 to connect them to each other, and the operating force of the lever 9 can be transmitted to the movable valve plate 8 via the shifter 9a. And

Returning to FIG. 2, at the lower end of the main body 3, a water and hot water supply passage 3 communicating with the water supply pipe 5a and the hot water supply pipe 5b is provided.
a and 3b are provided. The flow path ends of these supply paths 3a, 3b are formed so as to be coaxially aligned with the water hole 6b and the hot water hole 6c of the connection seat 6a fixed to the housing 6, respectively. Paths 3a, 3b and holes 6b,
6c are connected to each other by a seal ring 10. The seal ring 10 has a cylindrical shape made of rubber or soft synthetic resin, and has a step portion 3 provided on the inner circumference of the supply passages 3a and 3b.
It is urged toward the fixed valve plate 7 side by a spring 11 interposed between c and 3d.

Further, in order to seal-join the main body 3 to the outer shell member 2, holding grooves 3e and 3f provided on the outer peripheral surface of the main body 3 are provided.
Is provided with two packings 12a and 12b having a U-shaped cross section.

The main body 3 integrated with the outer shell members 1 and 2 is held down by the cover 4 so that the seal ring 10 and the fixed valve plate 7 are joined by an appropriate force, and the cover 3 is also held. 4 is locked against the main body 3.

FIG. 5 is an exploded perspective view showing a rotation stopping mechanism for holding the reduction and preventing rotation.

A male screw 3h is provided on the outer periphery on the upper end side of the main body 3, and notches 3i are provided at two locations facing each other in the radial direction. On the other hand, an inner thread on the lower end side of the cover 4 is provided with a female screw 4a to be screwed into the male screw 3h, and a spline 4b is provided on the inner circumference on the upper end side.

The housing 6 is integrally fitted by connecting the top block 6f to the upper end, and the housing 6 is fitted into the upper end of the main body 3, and a connecting hole 6g of the shifter 9a is opened in the center and a restraining protrusion 6h is raised in the vicinity of the connecting hole 6g. Is formed with an engaging projection 6i that fits into the notch 3i of the main body 3.

Further, a stopper 13 is provided for preventing rotation around the core when the main body 3 is incorporated. The stopper 13 is provided with an opening 13a for allowing the shifter 9a to pass through, and has a notch 13b formed in an inner peripheral portion thereof into which the restraining protrusion 6h of the top block 6f is fitted, and an outer peripheral surface of the spline 4b of the cover 4. Is provided with a spline 13c. Further, a part of the outer peripheral portion of the stopper 13 is a flank 13d that is linearly cut out, and this flank 13d is used as a tool hook.

After the outer shells 1 and 2 are fitted around the main body 3, the housing 6 is fitted with the engaging projections 6 of the top block 6f.
i is fitted into the notch 3i of the main body 3 so as to cover it, and the female screw 4a of the cover 4 and the male screw 3h of the main body 3 are screwed together to connect them. At this time, as shown in FIG. 1, the cover 4 presses down the upper surface of the top block 6f and presses the housing 6 downward, and the seal ring 10 and the lower surface of the fixed valve plate 7 are firmly joined.

After that, the stopper 13 is dropped into the spline 4b of the cover 4 so that the restraining protrusion 6h fits into the notch 13b. On the other hand, the housing 6 has the engagement projection 6i fitted in the notch 3i of the main body 3, so that the rotation of the housing 6 is restricted. Since the stopper 13 restrains the cover 4 by engaging the splines 4b and 13c, the cover 4 is in a state in which it is prevented from rotating with respect to the main body 3 via the stopper 13 and the housing 6.

Therefore, it is possible to prevent the cover 4 from rotating only by dropping the stopper 13 after tightening the cover 4 against the main body 3. That is, if the metal cover 4 is strongly screwed into the synthetic resin main body 3 and tightened, the main body 3 is likely to be cracked or deformed due to residual stress. Therefore, the cover 4 is assembled by screwing it into the main body 3 by a method such as manual tightening, and the tightening between the cover 4 and the main body 3 may be loosened after the assembly. On the other hand, by providing the above-mentioned detent, it is possible to prevent the cover 4 from loosening and at the same time suppress the generation of internal stress in the main body 3.

Here, since the pressing force by the cover 4 is transmitted to the seal ring 10 and the spring 11, the elastic force of these members is maintained and the strength of the main body 3 made of synthetic resin is maintained. However, it is preferable to assemble the cover 4 so that the cover 4 is not tightened too strongly. In the case where the tightening is loose in this way, if the stopper 13 is not provided, the cover 4 will be loosened due to vibration or the like received from the factory shipment in the transportation process.

On the other hand, as described above, the cover 4 is prevented from rotating with respect to the main body 3 via the stopper 13 and the housing 6, so that the cover 4 does not need to be strongly screwed into the main body 3. 4 can be prevented from loosening.

By connecting the cover 4 to the main body 3 as described above, the housing 6 in the main body 3 is pressed down, the connection seat 6a at the lower end thereof and the seal ring 10 are joined, and the spring 1
The joining force is retained by 1.

After the stopper 13 is dropped into the cover 4, when the stopper 13 is pulled out again for disassembling or reassembling, it can be pulled up by applying a tool such as a screwdriver to the flank 13d of the outer peripheral surface.

In this case, as shown in FIG. 6 (a), if the lower surface of the flank 13d is provided with an oblique inclination, the tool T can be easily slipped under the inclined surface. This makes it easier to pull out the stopper 13.

Further, as shown in FIG. 6B, a protrusion 13e is provided on the upper surface of the stopper 13, and the protrusion 13e is provided.
Even if the hole 13f for hanging a tool is formed in e, the stopper 13 can be similarly removed by a driver or the like.

Further, as shown in FIG. 6 (c), a shallow groove 13b-1 is provided on the inner wall of the notch 13b of the stopper 13 from the upper side, and this is formed on the outer peripheral surface of the restraining protrusion 6h of the top block 6f. Low protrusion 6h-which falls into the groove 13b-1
1 is provided. By providing the groove 13b-1 and the protrusion 6h-1, the stopper 13 can be attached to the top block 6f.
When it is covered with, it is possible to generate a light engagement force between the groove 13b-1 and the projection 6h-1. Therefore, even if the product is turned upside down during shipping or transportation, the stopper 13 can be prevented from falling off.

As described above, since the cover 4 screwed to the main body 3 is prevented from rotating, the screws are not loosened and the cover 4 is stably held even after an external force is applied after the assembly. Therefore, even after the factory shipment, the period of field installation, and after the actual use is started, there is no fear that the operation using the lever 9 will be disturbed, and stable use can be achieved. Further, since the restraining force on the housing 6 is also maintained stably, the sealing pressure of the seal ring 10 between the fixed valve plate 7 and the main body 3 is also appropriately maintained, and water leakage or the like does not occur.

Instead of the notch 13b provided in the stopper 13, the stopper 13 may be formed into an opening having a size large enough to allow the restraining protrusion 6h to enter, and a shallow groove may be provided on the restraining protrusion 6h side to form a protrusion on the notch 13b side. It may be provided to prevent the stopper 13 from coming off.

[0052]

According to the present invention, since the cover is restrained and connected to the main body by the rotation stopping mechanism, even if an external force acts on the cover or the screw connection during assembly is not sufficient,
The cover can be prevented from loosening due to rotation, and stable usability can be obtained.

Further, with the rotation stopping mechanism having the engaging relationship for restricting the mutual movement in the circumferential direction between the stopper and the cover, the rotation restricting force can be reduced as compared with the case where the cover partially receives the restricting force. It can be sufficiently acted, and the occurrence of loosening can be prevented even more effectively. If such an engaging relationship is a spline, the cover and the stopper can be easily obtained by general machining.

Further, by providing the stopper with a flank for hanging a tool, even if the stopper is structured to be dropped into the cover, it can be easily taken out by using this flank when removing the stopper, and maintenance is possible. Inspection is also easy.

Further, by restraining the stopper on the main body side by the shallow groove and the minute projection fitted therein, the stopper can be prevented from coming off regardless of the posture of the main body, and it can be installed from the factory shipment to the site. There is no loss of.

Further, in the case where the main body is made of synthetic resin, even if the main body and the cover are not strongly screwed together, the cover does not loosen due to the rotation stopping mechanism, and the main body itself is firmly connected to the cover. No expected cracking or deformation due to residual stress.

[Brief description of drawings]

FIG. 1 is a side longitudinal sectional view of a single lever type hot and cold water mixing faucet of the present invention.

FIG. 2 is a front vertical sectional view showing a main part of the hot and cold water mixing faucet of FIG.

3A and 3B are schematic views of a valve plate, in which FIG. 3A is a plan view of a fixed valve plate, and FIG. 3B is a plan view of a movable valve plate.

FIG. 4 is a plan view in which a movable valve plate is overlaid on a fixed valve plate,
(A) of the same figure when the valve is closed, (b) of the same figure when the opening degree of the water side and the hot water side are the same, and (c) of the same figure when the water side only is fully opened. (D) of the figure shows the case where the flow path is fully closed from (c) of the figure.

FIG. 5 is an exploded view of each member for fixing the valve element to the main body using the cover.

FIG. 6 (a) is a diagram showing how the tool is hooked on a flank provided on the stopper, and FIG. 6 (b) is a diagram showing an example in which a hole provided on the protrusion of the stopper is used as the tool hanging portion. , (C) of the figure
FIG. 6 is a diagram showing an example for preventing the stopper from falling off.

[Explanation of symbols]

 1 Outer Shell Material 10 Seal Ring 2 Outer Shell Material 11 Spring 3 Main Body 12a Packing 4 Cover 12b Packing 4a Female Screw 13 Stopper 4b Spline 13a Opening 5a Water Supply Pipe 13b Notch 5b Hot Water Supply Pipe 13c Spline 6 Housing 13d Water Relief Surface 6 Hole 6c hot water hole 6d mixed water outlet hole 6e retainer block 6f top block 6g connecting hole 6h restraining protrusion 7 fixed valve plate 8 movable valve plate 9 lever

Claims (8)

[Claims] 1. A body provided with a fluid inlet and an outlet and water passages for communicating these inlets and outlets with a valve element in the water passage, and a part of an operating means connected to the valve element. A water faucet having a cover connected to the main body and joining the main body and the cover with screws formed on the inner and outer circumferences of the main body and the cover. A faucet equipped with a rotation stop mechanism that regulates rotation. 2. The rotation stopping mechanism includes a stopper which is detachable from the main body and regulates rotation around its core so as to connect to the main body. The water faucet according to claim 1, wherein the water faucet is constituted by an engagement relationship that restricts movement in the circumferential direction. 3. The water faucet according to claim 2, wherein the engagement relationship between the stopper and the cover is formed by splines formed on the inner and outer circumferences of the respective stoppers. 4. The water faucet according to claim 2 or 3, wherein the outer peripheral surface of said stopper is formed with a flank for tool hanging in a notched shape. 5. The restraint projection is formed on an end surface of the main body, which is a surface on which the stopper is covered, and the stopper is provided with an opening or a notch into which the restraint projection can be inserted. The described faucet. 6. A cartridge type housing detachably mountable to the main body, wherein the valve element is housed, the housing is provided with the restraining protrusion on an end surface thereof facing the outside of the main body, and a space between the housing and the main body is provided. The faucet according to claim 1, wherein the faucet is connected to each other so as to be restrainable by a concave-convex engagement or a notch formed in either one and a projection engaged with the notch. 7. The protrusion and the shallow groove are provided with a connection relationship between the inner peripheral wall forming the opening or notch and the outer peripheral wall of the restraining protrusion having a shallow groove and a minute protrusion fitted into the shallow groove. The faucet according to claim 5, wherein the stopper can be restrained to the main body side by the. 8. The water faucet according to claim 1, wherein the main body is made of synthetic resin.