JPH0617894Y2 - Structure of water supply socket in sanitary washing equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a structure of a check valve built-in type water supply socket in a sanitary washing device equipped with a nozzle device for ejecting hot water for washing a human body. is there.

(Prior art) A sanitary washing device that ejects hot wash water constantly supplies a predetermined amount of tap water from the water pipe to the water tank inside the main unit, and measures must be taken to prevent backflow from the sanitary washing device to the water pipe. Is.

For this reason, in the conventional sanitary washing device, as shown in FIG. 3, when the water supply socket 51 fixed to the sanitary washing device main body 50 and the water pipe 52 are connected to each other, the sanitary washing device is installed in the water pipe 52. Water stop plug 53 and water supply socket 5
The check valve 54 is interposed between the check valve 54 and the check valve 54.
4 prevents backflow from the sanitary washing device side.

(Problems to be Solved by the Invention) However, in the above-described conventional configuration, the check valve 54 is provided in the external pipe connecting the water stopcock 53 and the water supply socket 51, and therefore the piping work becomes complicated, There is a problem that the working cost rises, and an extra space for external piping is required.

In view of the above problems, it is an object of the present invention to provide a water supply pipe of a sanitary washing device with a reduced number of connecting parts to simplify the pipe, improve workability during installation, and provide a space-saving and small water supply socket. I am trying.

(Means for Solving the Problems) In order to achieve the above object, the structure of the water supply socket in the sanitary washing device according to the present invention is the same as that of the water supply socket incorporated in the sanitary washing device body. The stop valve has a cylindrical valve housing with a tapered hole-shaped valve seat formed at the inner diameter at one end, and a valve support plate is fitted and integrated with the other end of the cylindrical valve housing, and a shaft hole formed in the valve support plate. On the other hand, a projecting shaft formed in the water stopping piece is axially slidably supported, and an O-ring which separates from the valve seat and is connected to the upstream side is attached to a circumferential groove formed in the water stopping piece. At the same time, the gist is that an elastic member that is externally mounted on the protruding shaft is elastically mounted between the valve support plate and the water blocking piece.

(Operation) According to the above configuration, when the water pressure on the pipe joint member side becomes higher than that on the water supply pipe side due to the opening / closing operation of the solenoid valve in the sanitary washing device body, the check valve stops the water by the differential pressure. The top moves against the elastic pressing force of the elastic member, and tap water can be supplied through the gap between the O-ring and the valve seat and the flow hole.

Further, in the check valve, when the water pressure on the water supply pipe side becomes higher than the water pressure on the pipe joint member side, a shutoff force such that the O-ring comes into close contact with the valve seat is generated due to the differential pressure applied to the water piece, and Backflow negative pressure in the pipe direction can be prevented. In particular, since the water pressure is planarly controlled by the water stopping piece, the water flow and the water stopping operation can be smoothly performed.

(Example) An example of a check valve built-in type water supply socket in a sanitary washing device according to the present invention will be described below with reference to FIGS. 1 and 2. FIG. 1 shows a front cross-sectional view of a water supply socket 1, in which a water supply pipe 3 is connected to a circular hole formed in a bottom portion 2a of a cylindrical outer shell 2 with a bottom and an opening of the outer shell 2 is formed. A blind lid 5 is airtightly screwed and fixed to the end side through an O-ring 4, and a pipe joint member 6 is projectingly opened on one side of the outer shell 2 on the blind lid 5 side. A check valve mechanism 7 is provided between the upstream pipe joint member 6 and the downstream water supply pipe 3 in the outer shell 2. In this check valve mechanism 7, a valve support board 10 is fitted and integrated with the other end of a cylindrical valve housing 8 in which a valve seat 9 having a tapered hole is formed on the inner diameter portion at one end. The protruding shaft 12 formed in the water blocking piece 11 is axially slidably supported in the shaft hole 10a formed in the ring 10, and is attached to the circumferential groove 11a formed in the water blocking piece 11. The O-ring 13 formed by separating the coil seat 14 from the valve seat 9 on the downstream side is elastically mounted between the valve support board 10 and the water stopping piece 11 with the coil spring 14 externally fitted to the protruding shaft 12. Due to this elasticity, the water stop piece 11 presses the O-ring 13 against the valve seat 9. Again 1
Reference numeral 5 is a flow hole formed in the outer periphery of the shaft hole 10a of the support board 10, and the check valve mechanism 7 is airtight through the O-ring 16 in the large diameter step portion of the inner hole 2b of the outer shell 2. On valve housing 8
Is inserted and carried.

As shown in FIG. 2, the water supply socket 1 having the above-described configuration is fixed so that the pipe joint member 6 thereof protrudes to one side of the sanitary washing device body 20, and the water supply pipe 3 is adjusted by a solenoid valve.
The external water supply pipe 21 connected to the water tank (not shown) via the pressure reducing valve (not shown) and connected to the pipe joint member 6 is
It is connected to a water supply pipe 23 via a water stopcock 22.

Thus, during normal use, the water stopper 22 is kept open, and the tap water flows only in the supply direction through the check valve mechanism 7 of the water supply socket 1 by the opening / closing operation of the solenoid valve in the sanitary washing device body 20. , Prevent backflow. That is, the check valve mechanism 7
When the water pressure on the side of the pipe joint member 6 is higher than that on the side of the water supply pipe 3, the water blocking piece 11 moves in the direction of arrow A against the elastic pressing force of the coil spring 14 due to the pressure difference.
Tap water is supplied through the gap between the O-ring 13 and the valve seat 9 and the flow hole 15. Further, when the water supply pipe 3 side has a higher pressure than the pipe joint member 6 side water pressure, the differential pressure applied to the water shutoff piece 11 generates a shutoff force such that the O-ring 13 comes into close contact with the valve seat 9, and water pipes Prevents backflow negative pressure in the 23 direction.

(Effect of the Invention) Since the present invention is configured as described above, it has a structure in which the check valve is integrally incorporated in the water supply socket, and there are few connecting parts when connecting to the water supply pipe, and the piping space is reduced. In addition to being able to improve the workability of piping, it also has the feature that the factor of deterioration of the aesthetics associated with piping can be reduced, and the practical effect after the implementation of the present invention is extremely large.

[Brief description of drawings]

FIG. 1 is a front sectional view of a water supply socket showing an embodiment of the present invention, FIG. 2 is a connection piping diagram of the water supply socket and a water supply pipe,
FIG. 3 is a conventional connection piping diagram. DESCRIPTION OF SYMBOLS 1 ... Water supply socket, 2 ... Outer shell 3 ... Water supply piping, 6 ... Piping joint member 7 ... Check valve mechanism, 9 ... Valve seat

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Masami Iida, Inventor Masami Iida, 1001 Kuchiami, Ogura Minami-ku, Kitakyushu, Fukuoka Prefecture Tokura Kikai Co., Ltd. Kokura No. 2 Factory (72) Kuniaki Shinohara Nakajima, Kitakyushu, Kitakyushu, Fukuoka 2-1-1 No. 1 Totoki Kiki Co., Ltd. (56) References Japanese Patent Laid-Open No. 53-46858 (JP, A) Actual Development No. 58-24572 (JP, U)

Claims (1)

[Scope of utility model registration request] 1. A water supply socket built into a sanitary washing device main body, wherein a check valve incorporated in said water supply socket has a check valve at the other end of a cylindrical valve housing having a tapered valve seat formed at an inner diameter portion at one end. , The valve support plate is fitted and integrated, and the projecting shaft formed in the water stopping piece is axially slidably supported by the shaft hole formed in the valve support plate, An O-ring, which separates and contacts the valve seat on the downstream side, is attached to a circumferential groove formed in the water piece, and an elastic member mounted on the protruding shaft is mounted between the valve support board and the water piece piece. The structure of the water supply socket in the sanitary washing device characterized in that