JPS6013903Y2 - Bathtub drainage system - Google Patents

Description

[Detailed explanation of the idea] This invention relates to a drainage device for a bathtub.

A cylindrical drain fitting is attached to the bottom plate of the bathtub, a valve body is provided so that it can move toward and away from the tapered seat surface formed on the inner circumference of the upper part of the drain fitting, and the opening and closing of this valve body is remotely controlled by a control wire. Such drainage devices have been in existence for some time.

By the way, in a drainage device in which opening and closing of a valve body is remotely controlled using a control wire, it is necessary to prevent water from entering the inside of a wire guide tube into which the wire is inserted.

This is because the wires corrode due to the ingress of water and must be replaced as soon as possible.

For this reason, in a conventional device of this type, a valve body is provided at the tip of the wire guide tube so as to be movable up and down via a cylindrical bellows, a spring for pressing the valve body is housed in the bellows, and The valve body is closed by pulling a control wire inserted into the wire guide tube, and the valve body is opened by the elasticity of the spring.

Therefore, it takes time to assemble the device, and because the bellows has an inner wall, the outer diameter of the bellows increases, reducing the drainage passage area of the cylindrical drainage fitting attached to the bottom plate of the bathtub. The disadvantage is that it takes a long time.

This invention eliminates the above-mentioned drawbacks, provides a bathtub drainage device that is easy to assemble, and is highly effective in shortening drainage time.

Hereinafter, embodiments of this invention will be described based on the accompanying drawings.

As shown in FIG. 1, a hole 2 is formed in the bottom plate 1 of the bathtub, and a flange 4 is formed on the upper outer periphery of a cylindrical drain fitting 3 inserted into the hole 2. A tightening nut 5 is screwed onto the end projecting downward from 2, and the drainage fitting 3 is fixed by tightening the nut 5.

6 is between the flange 4 and the bottom plate 1, and between the bottom plate 1 and the nut 5
This is a patch between the two.

The drainage fitting 3 has a tapered sheet surface 7 on the inner periphery of the upper part, a drainage hole 8 is formed at the lower end, and a support tube 9 is inserted inside.

A nut plate 10 is screwed to the lower end of the support tube 9, and each of the bolts 11 inserted into the nut plate 10 is screwed to a protrusion 12 formed on the inner periphery of the lower end of the drain fitting 3 to fix the support tube 9. are doing.

The tip of a wire guide tube 13 is inserted inside the support tube 9, and an end tube 14 is screwed to the outside of the tip of the guide tube 13.

A flange 15 is formed on the inner periphery of the end tube 14, and an O-ring 16 and a packing holder 17 are provided between the flange 15 and the tip of the guide tube 13, and by firmly tightening the end tube 14, the O-ring is removed. 16 is deformed so that its inner periphery protrudes inward from the inner periphery of the wire guide tube 13.

Note that the seal presser 17 may be omitted.

A control wire 1 is installed inside the wire guide tube 13.
8 is inserted, and the rod-shaped presser 19 attached to the tip of this wire 18 is inserted inside the O-ring 16 to release this O-ring.
It is in close contact with the inner circumference of the ring 16, and its end is connected to the end cylinder 14.
The protrusion 20 at the end is inserted into the inside of the valve body 21 to prevent it from being pulled out.
It corresponds to the bottom surface of.

A cylindrical body 22 is provided on the lower surface of the valve body 21, and this cylindrical body 22 is slidably fitted to the outside of the end cylinder 14 and the tip of the wire guide tube 13, so that the valve body 21 is attached to the seat surface. 7
The valve body 21 is made to come into contact with the seat surface 7 by its own weight.

The structure of the device shown in the embodiment is different from the above, and its operation will be explained next.

Now, when the control wire 18 is pushed by operating the operation lever (not shown), the pusher 1 at the tip of the wire 18 is pressed.
9 moves upward, and the removal prevention protrusion 20 at the tip comes into contact with the lower surface of the valve body 21 and pushes up the valve body 21.

Therefore, the valve body 21 is separated from the seat surface 7, and the water inside the bathtub is drained from the drain hole 8 of the drain fitting 3.

When the control wire 18 is pulled and the retaining protrusion 20 at the tip of the pusher 19 is engaged with the upper surface of the flange 15 of the end cylinder 14, the valve body 21 descends under its own weight and the seat surface 7
and closes the upper part of the drain fitting 3.

In the embodiment shown in FIG. 1, a drainage device is shown in which water is drained onto the floor from the drainage hole 8 of the drainage fitting 3, but as shown in FIG. elbow 23
You may also connect a pipe to drain water from the bathtub.

Alternatively, as shown in FIG. 2 by omitting the support tube 9 shown in FIG. 1, the tip of the wire guide tube 13 is inserted into the hole 24 formed at the bottom of the elbow 23. The tip of the wire guide tube 13 may be fixed by tightening a nut 26, which is screwed onto the large diameter portion of the hole 24 and has a flange 25 formed on the outer periphery of the hole 24.

In this case, a circumferential groove 27 is formed on the lower surface of the flange 25, and an O-ring 28 is fitted into the circumferential groove 27, so that the connection between the flange 25 and the elbow 23 is kept watertight.

As described above, according to this invention, the tip of the wire guide tube is positioned in the drain fitting attached to the bottom plate of the bathtub or the drain channel communicating with the drain fitting, and the end tube is screwed onto the tip. A cylinder formed on the lower surface of the valve body is slidably fitted to the outside of this end cylinder, a wire is inserted inside the wire guide tube, and a presser connected to the tip of the wire is inserted into the end cylinder. It has a simple structure in which the tip of the presser is placed opposite the lower surface of the valve body, and the presser is moved upward by the operation of a wire to open the valve body.
In addition to being easy to assemble, the outer diameter of the cylindrical body provided on the lower surface of the valve body can be made small, and the drainage area of the drainage fitting can be increased.

Therefore, the drain time when the valve body is opened can be greatly reduced, and since the inner circumference of the O-ring attached to the inner circumference of the end cylinder is pressed against the outer circumference of the presser at the tip of the wire, It is possible to prevent water from entering the inside of the wire guide tube, which has a great effect on improving the life of the wire.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional front view showing one embodiment of a drainage device according to this invention, and FIG. 2 is a longitudinal sectional front view showing another embodiment of the same. 1... Bottom plate, 3... Drain fitting, 7...
... Sheet surface, 13 ... Wire guide tube, 1
4...End cylinder, 16...0 ring, 1
8...Control wire, 19...
Presser, 20... Valve body, 22... Cylindrical body.

Claims (1)

[Scope of utility model registration request] Attach a cylindrical drain fitting to the bottom plate of the bathtub, position the tip of the wire guide tube inside the drain fitting or in the drainage channel that communicates with this drain fitting, and screw the end tube onto the tip of the guide tube. and a cylindrical body provided on the lower surface of the valve body is fitted to the outside of the end cylinder so as to be movable up and down, so that the valve body can freely approach and separate from a seat surface formed on the inner periphery of the upper part of the drain fitting,
A control wire is inserted into the wire guide tube, and a rod-shaped presser connected to the tip of the wire is inserted inside the end cylinder so that the tip of the presser faces the lower surface of the valve body,
A drainage device for a bathtub in which the outer periphery of an O-ring attached to the inner periphery of the end tube is brought into close contact with the outer periphery of the presser.