JPH0137263Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial field of application] The invention consists of two ceramic valve plates with holes arranged one on top of the other, and one of them is rotated to open and close the flow path. Concerning the configuration of faucets.

[Conventional technology]

Conventionally, a water faucet using a ceramic valve plate as described above has been proposed in the Jitsugakusho application filed earlier by the applicant.
There is one described in specification No. 59-136023.

This has a spindle connected to a handle rotatably attached to a cylindrical case, and a ceramic valve plate disposed at the lower end.

Each of the valve plates is provided with a hole, one of which is fixed to the case by a leaf spring, and the other is engaged with a spindle and rotated by operating a handle to open and close the flow path.

As shown in FIG. 5, this leaf spring 50 has an upwardly convex arch shape, and has a flat abutting portion 51 on the apex side, and this abutting portion 51 serves as a crimping surface with the valve plate. In addition, protrusions 52 are provided on both ends of the case 53, which is connected to the mounting groove 5 of the case 53 that houses the valve element.
It is configured to be fixed by fitting into a notch 55 formed in 4.

[Problem that the invention attempts to solve]

However, in such a conventional structure, the protrusion 52 is simply fitted and locked into a notch 55 provided in a part of the mounting groove 54, so the leaf spring 50 may shift from its normal position during assembly and use.

Therefore, there is a problem in that the force applied to the overlapping valve plates is insufficient, and water leaks from between the valve plates, impeding the opening/closing operation of the valves.

The purpose of this invention is to securely place the leaf spring that presses the valve plate and holds it in the case in a fixed position in a faucet with a configuration in which ceramic valve plates are arranged in an overlapping manner. The purpose of this is to maintain the on-off valve and ensure reliable operation of the on-off valve.

[Means and actions for solving problems]

In this invention, a pair of ceramic valve plates are arranged in an overlapping manner, and a roughly arch-shaped leaf spring that biases one of the valve plates in the direction of the overlapping surface is fixed to the end of the case, and the other valve plate is rotated. In a faucet that opens and closes a flow path, an annular groove is formed on the inner periphery of the end of the case, and a retaining ring that can be fitted into the annular groove is integrally formed on the leaf spring. is held in place by this retaining ring.

〔Example〕

Hereinafter, the present invention will be explained based on embodiments shown in the drawings.

Fig. 1 is a sectional view showing a state in which a faucet A according to the present invention is fixed to a mounting hole C of a hair washer B, Fig. 2 is a sectional view taken along the - line arrow in Fig. 1, and Fig. 3 is a valve FIG. 3 is an exploded perspective view of the unit.

At the bottom of the main body 1 of the faucet A, an inlet 2 that opens laterally, an outlet 3 that opens downward, and a valve unit mounting port 4 that similarly opens downward are provided, respectively.
A cylindrical portion 5 extending upward coaxially with the valve unit mounting port 4 is formed with a flange 6 in the middle.

Further, a partition wall 7 is formed in the middle of the flow path between the inlet port 2 and the outlet port 3, and an annular seat 8 that is coaxial with the valve unit mounting port 4 and the cylindrical portion 5 is formed through the partition wall 7. are doing.

The main body 1 is inserted into the mounting hole C from the lower part of the hair washer B, and is fixed by screwing the fastener 9 together with the flange 6 by pressing the mounting surface of the hair washer B. Then, the valve unit is inserted through the valve unit mounting port 4. Cap 1 after installation
0 is screwed into this valve unit mounting port 4, and a spline 11 for holding a case, which will be described later, is formed on the inner periphery.

U is a valve unit that can be attached to and detached from the main body 1 through the valve unit mounting port 4, and includes a case 20 supported by a cylindrical portion 5 and an annular seat 8, and a case 20 that is rotatably disposed within the case 20 and protrudes from the upper end of the main body 1. handle 12
The main elements are a spindle 21 connected to the case 20, a movable valve plate 22 and a fixed valve plate 23 made of ceramic, which are located at the lower end of the case 20 and open and close the flow passage by rotation of the spindle 21.

The case 20 has a hollow shape with different diameters and openings at both upper and lower ends, and a spline 38 provided on the outer peripheral surface of the upper side engages with the spline 11 of the main body 1, and an annular groove 24 is formed on the inner periphery of the lower end.
Notches 2 are formed at two positions in the radial direction.
5 are provided in the vertical direction. Furthermore, 26 is a flow passage hole that communicates between the inside of the case 20 and the outlet 3.

The spindle 21 is inserted through the case 20 and is arranged to be rotatable within a certain angular range (90 degrees in this example). This rotation angle regulation is performed by attaching a stopper ring 30 shown in FIG. The stopper ring 30 has a fan-shaped protrusion 31 with a central angle of 90° formed by both end faces,
This protrusion 31 is located within the channel hole 26. Since the flow passage hole 26 is formed in a semicircular arc-shaped area of 180°, the protrusion 31 comes into contact with both ends of the flow passage hole 26 and cannot rotate, and the spindle 21 can rotate within an angular range of 90°. move.

39 is a fixing ring that engages the spindle 21 and the case 20 so that the spindle 21 does not fall off from the case 20.

The movable valve plate 22 and the fixed valve plate 23 have the same shape, and have fan-shaped holes 32 with a center angle of about 90 degrees at two positions, and a flat plate-shaped engagement hole 32 at the lower end of the spindle 21 in the diametrical direction on one side. A groove 33 into which the mating portion 29 can be fitted is recessed in the radial direction. Both valve plates 22, 23
are inserted into the lower part of the case 20 in an overlapping state with their flat surfaces facing each other, and are attached by pressing and holding the two together with a leaf spring 27.

To assemble the valve unit U, first install the spindle 21.
into the case 20, and then attach the arch-shaped fixing ring 3.
9 to the circumferential surface of the spindle 21, and then attach the ring 39.
is locked to the upper end surface of the case 20, and both valve plates 2
2 and 23 are positioned such that the lower end of the spindle 21 can be inserted into the groove 33 thereof, and further held by the leaf spring 27.

As shown in FIG. 3, this leaf spring 27 includes a retaining ring portion 40 having a notch 41 that is approximately C-shaped in plan and can be fitted into the annular groove 24, and
A spring portion 42 extending upward from the spring portion 42 is integrally formed.

The outer diameter of the retaining ring part 40 is made slightly smaller than the inner diameter of the annular groove 24, and the spring part 42 has a notch 43 formed at the center of its upper end so that it can follow the contraction and deformation of the retaining ring part 40. When inserted into the annular groove 24 in the case 20, the retaining ring part 40 shrinks and deforms, and can be immovably mounted in the annular groove 24 using its elastic reaction force.

The valve plates 22 and 23 are attached to the case 20 by overlapping them and inserting them together with the slip ring 35 from the lower end of the case 20, and then inserting the leaf spring 27 with its retaining ring portion 40 engaged in the annular groove 24. Place it in

This causes the leaf spring 27 to retain its retaining ring portion 4.
0 is located in the annular groove 24 and locked in place,
The spring portion 42 comes into contact with the lower surface of the fixed valve plate 23 and urges the fixed valve plate 23 in the direction of the movable valve plate 22, thereby making it possible to overlap and press the fixed valve plate 23 together.

When the valve unit U having the above structure is inserted into the cylindrical part 5 through the valve unit mounting port 4 and is in the position shown in the figure, the ring 36, which is larger than the inner diameter of the main body 1, is inserted into the spindle 21 and the fixing ring 37 is inserted into the cylinder part 5.
from above. As a result, the ring 36
is locked to the upper end of the main body 1, and the valve unit U is fixed to the main body 1.

In the above configuration, it can be fixed in place by the retaining ring part 40 integrally formed with the spring part 42 of the leaf spring 27 that applies a superposition force between the movable and fixed valve plates 22 and 23 arranged in the valve unit U, and when assembled. It is possible to prevent the leaf spring 27 from shifting in places such as the above.

Therefore, the leaf spring 27 applies an upward elastic force to the fixed valve plate 23 to maintain the overlapping force with the movable valve plate 22, and always presses the fixed valve plate 23 in the direction of the movable valve plate 22. Water leakage between the fixed and movable valve plates 22 and 23 can be prevented.

[Effect of idea]

With this invention, the leaf spring for fixing and holding the valve plate can be held in place on the inner periphery of the lower end of the case, so the overlapping state of the valve plate can always be kept in good condition and water leakage between the valve plates can be prevented. The effect is that the on-off valve can be operated reliably.

[Brief explanation of drawings]

Fig. 1 is a sectional view of the main parts of a faucet according to the present invention attached to a hair washer, Fig. 2 is a sectional view taken along the - line in Fig. 1, Fig. 3 is an exploded perspective view of the valve unit, and Fig. 4
The figure is a perspective view showing a state in which the leaf spring is locked by the retaining ring part, and FIG. 5 is a perspective view of the main part showing a conventional leaf spring support structure. 1...Main body, 2...Inflow port, 3...Outflow port, 2
1...Spindle, 22...Movable valve plate, 23...
Fixed valve plate, 24... Annular groove, 27... Leaf spring, 4
0...Retaining ring part, 42... Spring part.

Claims (1)

[Scope of utility model registration request] A pair of ceramic valve plates each having a hole at the end of the case that communicates the inlet and outlet of the faucet body are arranged overlapping each other, and one of them is biased in the direction of the overlapping surface. In a faucet configured to open and close a flow path by fixing a leaf spring to an end of the case and rotating the other valve plate, an annular groove is formed on the inner periphery of the end of the case, and the plate further includes a plate spring. A faucet characterized in that the spring is integrally formed with a spring portion that contacts the valve plate and a retaining ring portion that can be fitted into the annular groove.