JPH0220281Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a float valve mechanism for a toilet cleaning tank that is fitted into the bottom of the toilet cleaning tank and supplies a predetermined amount of cleaning water to the toilet bowl.

An example of a conventional float valve mechanism of this type is as follows:
As shown in Figure 1. As shown in the figure, the conventional float valve mechanism A has a mounting hole 2 drilled at the bottom of a toilet flushing tank (hereinafter referred to as tank) 1.
It is arranged in a mating manner. The float valve mechanism A has a cylindrical body 6 including a seating portion 4 for a float valve 3 and a spout 5 . A water overflow port 7 is opened in the inner peripheral surface of the cylindrical body 6. This overflow port 7 is located in the seating area 4
It communicates with an overflow pipe 8 installed upright near the. Further, a donut-shaped bottom plate 9 is fitted onto the outer peripheral surface of the cylindrical body 6, and an annular standing wall 11 having a screw 10 is provided at the edge of the bottom plate 9. 12 is the outer flange of the cylindrical body 6, and 13 is the upright wall 1.
1 is a water volume adjustment drum that is screwed together with the drum. 14
is a stopper of the float valve 3 fixedly supported in the middle of the overflow pipe 8. In addition, 15 is a floating ball, 16 is a ball tap, and 17 is an operating handle. The float valve 3 is operated by this operating handle 17.
is connected to by chain 18 etc.

To assemble the float valve mechanism A made up of the above-mentioned members, first fit the packing 19, the bottom plate 9, and the packing 20 below the outer flange 12 of the cylindrical body 6 in this order. Insert into mounting hole 2.
Then, the tightening nut 22 is screwed onto the threaded portion 21 of the cylindrical body 6 from the outside of the tank 1, thereby fixing the bottom plate 9 and the cylindrical body 6 to the tank bottom. Finally, the water volume adjustment drum 13 may be screwed onto the upright wall 11 provided at the edge of the bottom plate 9. This allows the float valve mechanism A to be fixedly installed at the bottom of the tank.

In such a float valve mechanism A, when the operating handle 17 is turned from the state shown in FIG. 1, the float valve 3 is pulled up to the stopper 14 via the chain 18. Thereafter, the float valve 3 maintains this state by its own buoyancy. In other words, the seating part of the cylindrical body 6 becomes open, and the flushing water in the tank 1 flows out from this part into the toilet bowl (not shown). Then, when the water level drops to the position of the upper end surface of the water volume adjustment drum 13, only the cleaning water inside the drum 13 will flow out. Therefore, the cleaning water in the drum 13 rapidly decreases, and eventually the float valve 3 is drawn downward by the suction force acting on the seat 4 and is seated on the seat 4. The water volume regulating drum 13, in the above state, determines the flow rate of flushing water flowing into the toilet bowl based on its height and internal capacity.

On the other hand, in the ball tap 16, the height of the floating ball 15 decreases as the water level decreases, and cleaning water is supplied into the tank 1. After the float valve 3 is seated, cleaning water from the ball tap 16 is stored in the tank 1. When the water level rises to a predetermined level, the ball tap 16 stops supplying washing water.

However, in the conventional float valve mechanism A having the above-described configuration and operation, the tightening nut 22
If the tightening force is too strong, the end edge side of the outer collar 12 will warp upward in FIG. 1, and the seal 19 will lose its water-stopping function, causing water to leak from that part. In addition, the water volume adjustment drum 13 must be fixed to the bottom plate 9 by screw fitting, and its attachment and detachment is a complicated task in the narrow space inside the tank 1.

The present invention improves and eliminates the above-mentioned drawbacks of the conventional technology, and by attaching a water volume adjustment drum to the outer flange of the cylindrical body, the conventional bottom plate and the bottom plate and the outer flange are connected. To provide a float valve mechanism for a tank for flushing a toilet bowl, which eliminates the need for a gasket between the parts and allows a water volume adjustment drum to be attached to the outer flange with a simple procedure.

The configuration of the present invention will be explained below based on the embodiments shown in the drawings. It should be noted that parts with the same symbols as in the conventional case are the same members.

FIG. 2 is a longitudinal sectional view of the tank 1 showing the float valve mechanism B of the toilet bowl cleaning tank according to the present invention. The cylindrical body 23 of this float valve mechanism B has a third
As shown in FIGS. 5 to 5, an outer flange 24 integrally formed with the cylindrical body 23 has the same diameter as the inner peripheral surface of the water volume adjustment drum 25, and the water volume adjustment drum 25 is attached to the outer flange 24. It's like this. The outer tsuba 24 is
It has two types of notches 26 and 27 on its peripheral side, two each, for a total of four. A step 28 is continuously formed in these notches 26 and 27, and a small protrusion 29 is provided in the step 28 of the notch 27. Reference numeral 30 denotes a water passageway formed with a cutout extending inward from the peripheral edge of the outer flange 24 . This water passage 30 is for flowing the washing water below the upper end surface of the water amount regulating drum 25 into the drum, and preventing the washing water from stagnation. Further, the washing water flowing into the drum from the water passage 30 acts to push up the float valve 3, thereby buffering the valve 3 from being seated suddenly.

On the other hand, as shown in FIG. 6, the water volume adjustment drum 25 has an annular inner flange 31 on the inner circumferential surface of the lower end thereof. On the lower surface of this inner flange 31, the outer flange 2
Four fitting protrusions 32 corresponding to the four notches 26 and 27 are provided. The fitting protrusion 32 is attached to the inner flange 3
It consists of an upright wall 32a erected from 1 and a horizontal wall 32b parallel to the inner flange 31 with a predetermined gap,
A groove 33 is bored in the middle of the inner surface of the horizontal wall 32b.

The rest of the structure is the same as the conventional float valve mechanism A shown in FIG.

To assemble the float valve mechanism B configured as described above to the tank 1, first, the cylindrical body is in the state shown by the solid line in FIG. 3 with the water volume adjustment drum 25 removed, and in the state shown in FIG. 5. 23 is prepared, the gasket 20 is fitted onto the threaded part 21, and the threaded part 21 is inserted into the mounting hole 2 at the bottom of the tank. Then, a tightening nut 22 is screwed together from the outside of the tank 1, the packing 20 and the tank bottom wall are held between the nut 22 and the outer flange 24, and the cylindrical body 23 is fixed to the mounting hole 2. Finally, the water volume adjustment drum 25 is attached to the outer collar 24. This attachment is performed by positioning the fitting protrusions 32 of the drum 25 in the notches 26, 27 of the outer flange 24 and rotating the entire drum in the circumferential direction. As a result, the horizontal wall 32b of the fitting protrusion 32 and the inner flange 31
The stepped portion 28 of the outer flange 24 can be held between the two, and the water amount adjustment drum 25 can be attached to the outer flange 24.
At this time, the small protrusion 29 provided on the stepped portion 28 of the notch 27 fits into the groove 33 provided on the horizontal wall 32b of the fitting protrusion 32 to prevent it from coming off and shaking. In short, this water volume adjustment drum 25 can be attached to the outer collar 24 with one touch.

In this way, the float valve mechanism B installed in the mounting hole 2 at the bottom of the tank eliminates the need for the conventionally used bottom plate 9 and gasket 19 (see FIG. 1), and the assembly work is simple. Furthermore, the water leakage accident that conventionally occurred between the bottom plate 9 and the outer flange 12 is eliminated.

Note that the operation of supplying flush water to the toilet bowl by the float valve mechanism B is the same as in the conventional case, and a description thereof will be omitted here.

By the way, the fitting style between the water volume adjustment drum 25 and the outer flange 24 of the float valve mechanism B is not limited to the above-described one, and can be changed as appropriate.

As explained above, according to the present invention, the number of parts of the float valve mechanism can be reduced and the assembly work is simple. Furthermore, by reducing the number of parts, there is no need to worry about water leakage as in the past. Furthermore, by reducing the number of parts, costs can be reduced. Furthermore, the water volume adjustment drum can be attached and detached from the outer flange with a single touch, which is convenient.

[Brief explanation of the drawing]

Figure 1 is a vertical sectional view of a toilet flushing tank showing a conventional float valve mechanism of this kind, Figures 2 to 6 are related to the present invention, and Figure 2 is a toilet flushing tank showing a float valve mechanism. 3 is a side view of the float valve mechanism with the water volume adjustment drum removed, FIG. 4 is a plan view of the same, and FIG. 5 is a perspective view of the float valve mechanism seen from the bottom side. FIG. 6 is a perspective view of the water volume adjustment drum viewed from the bottom side. B...Float valve mechanism, 3...Float valve, 4
... Seat part, 5 ... Water spout, 1 ... Toilet cleaning tank, 23 ... Cylindrical body, 7 ... Overflow port, 8 ... Overflow pipe, 24 ... Outer flange, 25 ... Water volume adjustment drum , 31... Inner flange, 32... Fitting protrusion, 2
6, 27... Notch.

Claims (1)

[Scope of Claim for Utility Model Registration] 1. A cylindrical body having a seat portion of a float valve and a water spout, which is fitted into the bottom of a toilet flushing tank, and a cylindrical body having an opening on the inner circumferential surface of the cylindrical body. A tank for flushing a toilet bowl, comprising an overflow pipe communicating with an overflow port, an outer flange integrally formed on the outer peripheral surface of a cylindrical body, and a water volume adjustment drum attached to the peripheral edge of the outer flange. float valve mechanism. 2. The water volume regulating drum has an inner flange on the inner circumferential surface of the lower end side, and a fitting protrusion is provided on the lower surface side of the inner flange with a predetermined gap, and the outer flange of the cylindrical body A notch is provided on the peripheral edge side, and by placing the fitting protrusion in the notch and rotating the water volume adjustment drum, a part of the outer flange can be held between the inner flange and the fitting protrusion. A float valve mechanism for a toilet flushing tank according to claim 1, characterized in that a water volume regulating drum is attached to the outer flange.