JPH0659683U - Stopcock for faucet - Google Patents

Abstract

(57) [Summary] [Purpose] To facilitate the removal work of the check valve integrated strainer for the water stopcock during maintenance. [Structure] A water stopcock 20 that is detachably mounted in the flow path of the water tap 34 has a puller that can be hooked with a finger when the check valve integrated strainer of the water stopcock 20 is pulled out from the water tap 34. 42 are provided.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a water stopcock arranged in a water tap.

[0002]

[Prior art]

 For example, in a mixed faucet, a water shutoff valve, a check valve, and a strainer are placed upstream of the flow paths of hot water and water to the hot water mixing chamber in the faucet body. I have set up. The strainer is for removing dust such as red rust contained in hot water and water, and the check valve prevents the hot water in the mixed faucet from flowing backward to a water supply source such as water supply or a hot water supply source. It is to prevent it. Further, the water shutoff valve is for closing the upstream side of the faucet body to enable maintenance inside the faucet body.

Thus, as shown in FIG. 5, the conventional shutoff valve, check valve and strainer of the mixed faucet are of a type in which these three are integrally incorporated, As shown in FIGS. 6 and 7, there are a strainer with a check valve and a type with a water stop valve formed separately.

In the prior art shown in FIG. 5, a flow path 1 is bent in a crank shape, and a valve body 2 serving both as a water shutoff valve and a check valve and a strainer 3 are formed at one portion of the bent portion. Are integrated as one. More specifically, first, a holder 7 having an inflow port 4, a valve seat 5 and an outflow port 6 is screwed to a bent portion of the flow path 1. A strainer 3 is fitted on the outer peripheral surface of the holder 7 so as to cover the outlet 6. On the other hand, on the other end side of the holder 7, an adjusting screw 9 having a valve body 2 slidable in the axial direction via a spring 8 is screwed. Further, a plug body 10 for closing these mounting holes is screwed to the flow path body. The strainer 3 is integrally attached to the inner peripheral surface of the collar portion of the plug body 10 with an adhesive or the like.

In a normal use state, the valve body 2 is seated on the valve seat portion 5 by the biasing force of the spring 8. When the pressure on the downstream side of the flow path 1 decreases by opening the faucet or the like, the valve body 2 moves upward in FIG. 5 and opens the inflow port 4. As a result, hot water flows into the holder 7, passes through the outlet 6 and the strainer 3, flows to the secondary side, and is discharged from the water outlet. When the pressure on the secondary side becomes high for some reason, the valve body 2 is seated on the valve seat portion 5 to prevent backflow. Further, when the valve body 2 is forcibly seated on the valve seat portion 5 by further screwing the adjusting screw 9, it serves as a water stopcock.

The conventional technique shown in FIGS. 6 and 7 is a mixing faucet 13 of a type in which only the handle 12 is projected on the upper edge surface of the bathtub and the other portion is embedded. The mixed water faucet 13 has an outflow side connected to the fixed quantity water stopcock 14 and a water discharge pipe 15 further connected to the downstream side of the fixed quantity waterstopper 14. In this mixed faucet 13, a water stopcock 16 and a check valve with a strainer 17 are separately incorporated. This is the same for both the hot water side and the water side flow path.

Hot water or hot water supplied from a water supply source first passes through the water stopcock 16 and then through the check valve and strainer 17 to flow into the mixing chamber 18 side. Then, the hot water and water are mixed to become warm water of an appropriate temperature, and the hot water is turned to the back side of the mixed water faucet 13, flows from the bypass pipe 19 into the quantitative water stopper 14, and is discharged through the water discharge pipe 15.

[0008]

[Problems to be solved by the device]

 By the way, in the prior art shown in FIG. 5, red rust of hot water flowing from the inflow port 4 and other dusts are filtered by the strainer 3 and accumulated in the holder 7, which interferes with the normal valve operation of the valve body 2. Therefore, it is necessary to pull out the whole holder 7 to the outside and perform maintenance of the valve body 2 etc. However, at the time of maintenance, it is necessary to rotate the plug body 10 with a tool to remove it, and usually the installation place is extremely narrow. There is a problem that it is located on the back side, and it is difficult to operate tools etc., which makes maintenance work difficult.

Further, in the prior art shown in FIGS. 6 and 7, the check valve with a strainer 17 and the water stopcock 16 are separate bodies, and the check valve 17 is provided from the outside by using a driver or the like. It had to be removed during maintenance, and this part was a buried narrow space, and it was difficult to insert a tool such as a screwdriver in many cases, and workability was extremely poor.

[0010]

[Means for Solving the Problems]

 The present invention has been devised in view of the above-mentioned conventional problems, and an object thereof is to provide a water stopcock that has extremely good workability during maintenance and the like. A water stopcock that is removably attached to the flow path, wherein the water stopcock is provided with a handle that can be hooked when the check valve integrated strainer of the water stopcock is pulled out from the water tap. It is that you are.

[0011]

[Action]

 For maintenance, etc., when removing the check valve integrated strainer of the water stopcock from the faucet, hook the handle provided on the water stopcock with your finger and use this handle without using a tool. In addition, the check valve integrated strainer of the water stopper can be removed, improving workability during maintenance.

[0012]

【Example】

 The structure of the present invention will be described below with reference to the embodiments shown in the drawings. The same reference numerals as in the conventional case are the same members. 1 to 4 relate to an embodiment of the present invention. FIG. 1 is a partial vertical cross-sectional view of a mixed faucet 21 using a water stopcock 20 with a check valve integrated type strainer, and FIG. FIG. 3 is an exploded perspective view of the water stopcock 20, FIG. 3 is a partial vertical cross-sectional view showing an entire mixed water tap 21 using the water stopcock 20, and FIG. As shown in FIG. 1 and FIG. 2, the check valve-integrated strainer stopcock 20 with a strainer has an inlet 23 and an outlet 24 provided along the axial direction on the circumferential side surface of a cylindrical holder body 22. Has been. A strainer 25 is fitted on the outer peripheral surface side of the inflow port 23.

A check valve 27 is mounted in the holder body 22 between the inflow port 23 and the outflow port 24 via a cover 26. The cover 26 connects the inner cylinder and the outer cylinder with a connecting member such as a cross, the valve shaft of the check valve 27 is slidably mounted in the inner cylinder, and the outer cylinder is the holder body. It is fitted in the inside of 22. 28 is a spring for urging the check valve 27, and 29 is a valve seat provided in the holder 22.

A hexagonal square hole 30 is formed on the tip side of the holder body 22, and the valve shaft head 32 of the water shutoff valve body 31 is slidable in the axial direction in the square hole 30. It is fitted and attached to. Further, on the upper end side of the holder main body 22, an adjusting spindle 33 is integrally attached and fixed to the screw portion with an adhesive so that the cover 26 of the check valve 27 is prevented from coming off. A plug body 35 screwed to a main body 34 of the mixed water faucet 21 is externally fitted and attached to a cylinder shaft portion of the adjustment spindle 33, and is prevented from coming off by a coming-off preventing ring 36.

As shown in FIG. 3, the check valve-integrated strainer-equipped water stopcock 20 configured as described above has the screw portion 37 of the valve shaft tip side of the water stop valve body 31 of the mixed water faucet 21. It is screwed to a part of the main body 34. Then, the stopper 35 is screwed onto the faucet body 34. In this state, when the head of the adjusting spindle 33 is rotated by a tool such as a screwdriver, the rotational force is transmitted to the water stop valve body 31 on the tip side via the holder body 22. The water shut-off valve body 31 is slidable in the axial direction by fitting the square hole 30 and the valve shaft head portion 32 with respect to the holder main body 22, and the valve seat 38 (see FIG. It is possible to adjust the gap between (see 1). If the water shut-off valve body 31 is seated on the valve seat 38, the water shut-off state is set.

This check valve integrated strainer stopcock 20 with a strainer has three parts having respective functions incorporated in a single holder body 22 in a cartridge type, and the three parts are arranged on the same axis. Therefore, the width dimension in the front-rear direction can be significantly reduced in the state of being attached to the mixing faucet 21. Therefore, when this water stopcock 20 is used, the flow path 40 can be integrally formed on the back side of the waterstop body 34, and a bypass pipe is not required as in the conventional case.

In a normal use state, hot water and water reach the strainer 25 through the gap formed between the water shutoff valve body 31 and the valve seat 38, and the strainer 25 and the inflow port 23 allow the holder body 22 to pass through. Flows in. Then, the check valve 27 is pushed up against the urging force of the spring 28, flows from the outlet 24 to the mixing chamber 39 of the mixing faucet 21, and the hot water and water are mixed to become appropriate hot water. As shown in FIGS. 3 and 4, the mixing chamber 39 communicates with the outflow connection port 41 via a flow path 40 formed on the back side of the faucet body 34. In this case, the outflow connection port 41 on the right side is closed. The warm water that has flowed into the mixing chamber 39 flows through the flow passage 40 to the fixed-quantity stopcock 14 and is discharged from the water discharge pipe 15.

Next, a case where the check valve 27 and the strainer 25 are cleaned and maintained will be described. In this case, first, the head of the adjusting spindle 33 is rotated with a tool from the normal use state, and the water shutoff valve body 31 is rotated via the holder body 22. As a result, the screw portion 37 of the water shutoff valve body 31 is screwed forward with respect to the female screw portion of the water faucet body 34, and eventually the water shutoff valve body 31 is seated on the valve seat 38, and It will block the inflow side. That is, a water-stop state can be obtained.

After that, the stopper 35 is rotated via the pull tab 42 to be unscrewed from the faucet body 34. Then, when the pull tab 42 is pulled up in this state, the concave portion of the upper end surface of the plug body 35 comes into contact with and engages with the retaining ring 36 of the adjustment spindle 33, and together with the plug body 35, the adjustment spindle 33 and the holder main body. 22 is integrally extracted. The water stop valve body 31 remains screwed to the faucet body 34. Therefore, it is not necessary to separately close the main plug. Of course, the check valve 27 and the strainer 25 are incorporated in the holder body 22, and after taking them out from the faucet body 34, they can be cleaned and maintained.

After the check valve 27 and the strainer 25 are cleaned and maintained, the holder body 22 and the adjusting spindle 33 are pushed into the mounting holes of the faucet body 34, and the square holes 30 of the holder body 22 are closed. The valve shaft head 32 of the body 31 is fitted. Then, the plug body 35 may be screwed on, and finally the adjusting spindle 33 may be rotated to separate the water shutoff valve body 31 from the valve seat 38 to open the flow path. As a result, normal use is achieved.

In this embodiment, the check valve integrated strainer with a check valve 20 that is attached to the mixed faucet is exemplified, but the present invention is not limited to the hot and cold water mixed faucet, and the same applies to a faucet that flows only water. The water stopper 20 having the structure can be used, and the pull tab 42 is not limited to the check valve-integrated water stopper 20. Even in a general water stopper, such a pull finger 42 is provided. The check valve and strainer can be easily removed during maintenance.

[0022]

[Effect of device]

 The present invention is provided with a puller on the water stopcock, so that it is provided on the waterstop when the check valve integrated strainer of the water stopcock is removed from the water stop during maintenance or the like. You can easily remove the check valve integrated strainer of the water stopcock by hooking the pulling handle on your finger without using a tool, and improve workability during maintenance.

[Brief description of drawings]

FIG. 1 is a partial vertical cross-sectional view of a mixing faucet incorporating a stopcock with a check valve integrated strainer according to the present invention.

FIG. 2 is an exploded perspective view of a stopcock with a check valve integrated strainer according to the present invention.

FIG. 3 is a partial vertical cross-sectional configuration diagram showing an entire mixing faucet to which the water stopcock with a check valve integrated strainer according to the present invention is applied.

FIG. 4 is a plan view of a mixed faucet to which a stopcock with a check valve integrated strainer according to the present invention is applied.

FIG. 5 is a vertical cross-sectional view of a conventional stopcock with a check valve integrated strainer.

FIG. 6 is a plan view of a conventional mixed faucet in which a check valve with a strainer and a water stopcock are separately installed.

FIG. 7 is a partial vertical cross-sectional configuration diagram of a mixed faucet in which a conventional check valve with a strainer and a water stopcock are separately installed.

[Explanation of symbols]

 20 Faucet with Check Valve Integrated Strainer 21 Mixing Faucet 22 Holder Body 23 Inlet 24 Outlet 25 Strainer 27 Check Valve 28 Spring 29 Valve Seat 30 Square Hole 31 Water Stop Valve 33 Control Spindle 35 Plug 42 hand

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Junji Akita 5-1-1 Koiemotocho, Tokoname City, Aichi Prefecture Inax Co., Ltd.

Claims (1)

[Scope of utility model registration request] 1. A water stopcock that is removably mounted in a water passage of a water stopcock, which can be hooked on the water stopcock when a strainer with a check valve integrated therein is pulled out from the water stopcock. A water faucet for a faucet, which is provided with a pull handle.