JPH0344857Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a ball tap for injecting water into a water tank to a predetermined water level.

[Prior Art] A water tank, such as a tank of a flush toilet, is equipped with a ball tap, and water is supplied so that the water level in the water tank reaches a predetermined level.

This ball tap consists of a valve box that houses the valve body,
A lever with a floating ball is provided to operate the valve body, and when the water level in the water tank rises, the floating ball floats up and presses the valve body against the valve seat to shut off the water.

A conventional ball tap will be described with reference to FIG. 3. Reference numeral 10 is a valve box, and a partition 12 is provided inside the box to separate the water inlet 14 side and the outlet 16 side. This partition portion 12 is provided with an opening 18, and a valve body 20 can be seated on one end side (valve seat) of the opening 18. This valve body 20 is a floating ball 22
It is operated by a lever 24 and an arm 26 attached thereto. The lever 24 is pivotally fixed to a lever mounting portion 28 integral with the valve box 10 via a pin 30. The arm portion 26 has an arm attachment portion 3 integral with the valve box 10 at its proximal end.
2 via a pin 34, and the arm portion 26
A screw shaft 36 for adjusting the water cutoff level is provided on the tip side of the screw. Reference numeral 37 indicates a hand washing pipe.

Therefore, in this ball tap, when the water level rises, the buoyancy of the floating ball 22 increases, and the valve body 20 comes into contact with the valve seat (lower edge of the opening) of the opening 18 with a strong force, thereby shutting off the water. However, in order to seal the water when the water is shut off, a dovetail groove 40 is formed in the upper surface of the valve body 20 as shown in FIG. 4, and a packing 38 is fitted into this dovetail groove 40.

[Problems to be Solved by the Invention] This method of holding the packing 38 using the dovetail groove structure has the following problems.

Conventionally, the valve body 20 is made of metal, and the dovetail groove 40 is relatively easily formed.
When the valve body 2 is made of synthetic resin, the presence of the dovetail groove prevents the mold from being removed.
0 cannot be made of synthetic resin, which is inexpensive and has high corrosion resistance.

When fitting the gasket 38 into the dovetail groove 40, air in the dovetail groove 40 is difficult to escape. Therefore, it is difficult to fit the gasket 38 tightly into the bottom surface of the dovetail groove 40, and the gasket 38 tends to be in a so-called bulging and floating state.

[Means for Solving the Problems] The ball tap of the present invention has a concave part for attaching a gasket on the upper surface of the valve body, and a gasket is fitted into this concave part, and the side wall of the concave part is provided with a concave part for attaching a gasket to the inside of the concave part and the outside of the valve body. It has an opening that communicates with it.

[Function] In this invention, the packing is held by the edge of the packing fitted into the recess biting into the opening.

Also, since this opening acts as an air vent,
It becomes extremely easy to fit the packing tightly into the recess.

[Example] Examples will be described below with reference to the drawings.

FIG. 1 is a longitudinal cross-sectional view of a valve body used in a ball tap according to an embodiment, and FIG. 2 is a cross-sectional view taken along the line shown in FIG. 1.

In the ball tap valve body 20 according to this embodiment, a groove 42 is formed in the upper surface thereof, an opening 44 is bored in the side wall of the groove 42, and the inside of the groove 42 is communicated with the outside of the valve body 20. I'm letting you do it. Note that the side peripheral surface of this groove 42 is a wall perpendicular to the bottom surface. The other configurations are the same as in FIG. 4. Further, since the overall structure of the ball tap into which the valve body 20 is inserted is the same as that shown in FIG. 3, illustration and description thereof will be omitted.

In the valve body 20 having such a configuration, the seal 3
A part of the outer periphery of 8 bites into the opening 44 and is held there. Further, the openings 44 can have any shape, and can be provided parallel to each other as shown in FIG. Therefore, the valve body 20 can be made of synthetic resin. (When molded with synthetic resin, the mold can be removed by separating the mold in the direction in which the opening 44 extends (direction of arrow A in FIG. 2).) Furthermore, since the opening 44 acts as an air vent,
It is extremely easy to fit the gasket 38 tightly into the groove 42.

In particular, in the embodiment described above, since a large number of openings 44 are provided, the locking force of the gasket 38 is high, and the air is removed very reliably when the gasket 38 is fitted.

Although the above embodiment relates to a ball tap for a flush toilet, the present invention can be similarly applied to various other types of ball taps for aquariums.

[Effects] As described above, according to the present invention, the valve body of the ball tap can be made of synthetic resin, and the manufacturing process can be simplified and the manufacturing cost can be reduced, and the corrosion resistance of the valve body can also be improved. Further, it is extremely easy to fit the packing tightly into the groove on the upper surface of the valve body.

[Brief explanation of drawings]

Fig. 1 is a sectional view of a main part of a valve body used in a ball tap according to an embodiment of the present invention, Fig. 2 is a sectional view taken along the line - Fig. 1, and Fig. 3 is a sectional view showing a conventional ball tap. FIG. 4 is a sectional view of the valve body. 20...Valve body, 22...Floating ball, 37...Hand wash tube, 38...Putskin, 40...Dovetail groove, 42...
...concave groove, 44...opening.

Claims (1)

[Scope of utility model registration request] A valve body that is moved toward and away from the valve seat by means of a floating ball is inserted into a valve case in which a valve seat is installed.
In addition, a groove is formed on the top surface of the valve body, and in a ball tap in which a gasket seated on the valve seat is fitted into the groove, a groove is formed on the side circumferential wall of the groove to extend the inside of the groove to the outside of the valve body. A ball tap characterized by having a communicating opening.