JPS5830876Y2 - drainage device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a drainage device for appliances that store or use water.

Conventional drainage devices of this type have a cylindrical drainage device with a flange on the upper end and a screw on the circumference, which is inserted into the drainage port of the device, and a nut is screwed into the threaded part of the drainage device from the back side of the device. When tightening, the drain fitting is fixed to the fixture, and by attaching and detaching the stopper to the drain fixture, water can be stored in and drained from the fixture. At the same time, a separate packing is tightly fitted around the outer periphery of the drain device, and this is tightened to the device with a nut to prevent leakage of water from the outer periphery of the drain device.

However, in such conventional drainage devices, the gasket that tightly attaches to the drainage device on the back side of the device is located at the threaded portion of the drainage device, and can be tightly attached to the valley of the screw. It is unavoidable that there will be gaps between them.

Therefore, for example, in a wash basin, etc., the inner and outer surfaces of the appliance have a double wall structure at least at the drain port.
The space formed between these walls communicates with the drain outlet of the fixture, and the drain fitting is inserted through this space, and if the drain fitting has a structure where the middle part is in contact with water, the outer peripheral surface of the drain fitting There is a drawback that the water that wets the drainage device flows down along the valley of the threaded part of the drain device and leaks out of the device through the gap between the gasket and the valley. If the gasket interposed between the flange of the drainage device and the inner surface of the device is displaced or damaged and even a slight gap is created in the iron part, the same leakage occurs as described above.

Furthermore, especially in the case of wash basins, since the wash basin and drainage fixture are assembled at the construction site, it is difficult to follow a thorough work method, and there has been a need for a simple and reliable method for preventing leakage.

The present invention aims to eliminate the above-mentioned drawbacks.

A detailed explanation will be given below based on the illustrated embodiments. The illustrated example is a drainage system for a washbasin. In the figure, 1 is a washbasin, that is, a device for storing or using water, and a drain opening 2 is opened at the bottom, and the edge of the opening is a drain when a drainage device 3 is attached. The flange 4 of the drainage device projects from the bottom surface and is tapered and recessed so as not to impede complete drainage of water.

In addition, the washbasin 1 has a double wall around the drain port 2 that protrudes from the back side, and the space formed by this double wall is an overflow port (not shown) provided on the upper wall of the washbasin 1. ) to prevent overflowing drainage canal 5.

The drainage tool 3 is formed in a cylindrical shape, and the opening at one end is formed in an expanded shape to become a plug receiving part 6, and the upper end of the plug receiving part 6, that is, the opening edge is provided with a flange that projects horizontally. It has 4.

In addition, the drain 3 is in the middle part, that is, this is the drain port 2 of the washbasin 1.
A through hole 7 is formed by cutting out a portion located within the overflow drainage channel 5 when attached to the drain, and a screw 8 is installed on the outer circumferential surface below the through hole 7.
At the same time, a groove 9 is formed in the axial direction by cutting down to at least the valley of the screw 8.

The threaded portion 8 has a projection 10 on its inner peripheral surface that closes the groove 9, and is inserted into a washer 12 having an upright portion 11 with an L-shaped cross section on its periphery. For example, a packing 13 with a triangular cross section
is tightly attached, and in order to attach the drain fitting 3 and the washbasin 1 by pressure, a fastener 14 such as a nut is attached to the screw part 8 with a washer 12.
It is screwed on while pushing up.

In addition, the groove 9 of the drainage tool 3 and the protrusion 1 of the packing 13
The shape of 0 is arbitrary.

Also, the number of the protrusions 10 should be greater than the grooves 9.
Can be decided arbitrarily.

Further, the groove portion 9 only needs to be provided at least at a location where the gasket 13 is tightly attached, and its length may be arbitrary.

In the example shown in FIGS. 1 to 3, the groove portion 9 and the protrusion 10 each have a semicircular cross-sectional shape, and in the example shown in FIG.

In the example shown in FIG. 5, the grooves 9 and the protrusions 10 each have a rectangular cross-sectional shape, and four of each are provided.

In the example shown in FIG. 6, the groove portion 9 has a triangular cross-sectional shape and is provided on the threaded portion 8-L side.

In the example shown in FIG. 7, the protrusion 10 is a protrusion 2 having a trapezoidal cross-sectional shape, and in the example shown in FIG. In addition, a core material 13' made of a metal plate or the like is integrally molded inside the packing.

In the example shown in FIG. 9, the protrusions 10 are hemispherical protrusions, and four protrusions are provided.

Note that the upright portion 11 of the washer 12 may not be oriented vertically, but may be inclined outward or inward toward the center, or a combination thereof may be used.

The standing portion 11 may not be provided.

Furthermore, a protrusion that is guided by the groove 9 may be provided on the inner circumferential surface of the washer 12.

Further, the nut 14 and the washer 12 may be integrated.

Furthermore, the cross-sectional shape of the gasket 13 may be square or traditional.

The drain fitting 3 having the above structure is constructed by inserting the drain port 2 from the inside of the washbasin at the construction site, and bringing the flange 4 into contact with the edge of the drain port on the bottom surface of the washbasin 1 with the gasket 15 interposed therebetween. Put the packing 1 on the outer circumferential surface of the drain tool 3 from the back side of the container 1.
3 is inserted into the washer 12 and tightly attached, and then a nut 14 is screwed onto the threaded part 8 and tightened to fix it to the washbasin 1.

At this time, the gap between the drain tool 3 and the rim of the drain port 2 on the bottom of the washbasin 1 is kept watertight by the gasket 13 pressed by the fastener 14.

In addition, a groove 9 cut along the axial direction of the screw 8 to at least the valley of the screw is tightly fitted by the protrusion 10 of the packing 13, so that water flowing down along the valley of the screw 8 is prevented from flowing down at the groove 9. The protrusion 9 prevents the packing 13 from rotating as the fastener 14 rotates during tightening, and the protrusion 10 is guided along the groove 9. Therefore, the packing 13 can be easily fitted into the threaded portion 8, making assembly easier.

Note that if the washer 12 having the upright portion 11 on the periphery is used as in this embodiment, when the nut 14 is tightened, the packing 13 is prevented from expanding outward by the washer 12, so Pushed upward, the groove 9 of the screw 8 and the protrusion 10 can be more completely sealed, and the outer circumferential surface of the drainage tool 3 and the inner circumferential surface of the packing 13 are brought into close contact, preventing leakage between them. Furthermore, the upper end of the gasket 13 bites into the drain port 2 at the bottom of the washbasin 1, and the water seal between the two can be made even more reliable.

16 is a stopper made of rubber or the like, and a drainage device 3 is attached to the circumference of the stopper.
It has a tapered surface so that it can be fitted watertightly into the plug receiving part 6 of the plug body.

A chain 17 is attached to this stopper 16 and a suitable attachment is attached to the basin 1 via a fitting 18.

Further, 19 is a bag neck I for connecting the drain device 3 and the drain pipe 20.
It is.

In addition, although the embodiments 11 and 11 describe only the drainage device for a general washbasin, it goes without saying that it can be used as a drainage device for a washbasin using a pop-up type drain, a bathtub, or the like.

As described above, according to the present invention, the following effects can be obtained.

(1) The axial groove provided in the threaded portion and the protrusion provided on the inner circumferential surface of the packing can completely block water leaking through the thread valley.

(ii) The protrusion of the seal follows the groove, making it easy to fit the seal, and the seal does not rotate during tightening, making it easy to assemble without causing the protrusion of the seal to break.

(iii) Since water leakage is completely prevented, sealing agents and sealing tapes are not required, and the structure can be simplified and costs can be reduced.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing the first embodiment of the drainage device of the present invention, Fig. 2 is a partially cutaway front view of the same, Fig. 3 is a cross-sectional view taken along line I-I in Fig. 2, and Figs. 4 and 5 are A cross-sectional view showing another example of the first embodiment, FIG. 6 is a front view of the drainage device showing another example of the groove, and FIG. 7.8.9 shows another example of the protrusion. A is a plan view of the package, and the mouth is a front view across the center. 1: Fixture, 2: Drain port, 3: Drainage tool, 4: Flange, 8
: Screw, 9: Groove, 10: Protrusion, 13: Packing, 14
: Fastener, 16: Plug.

Claims (1)

[Scope of utility model registration request] A drainage port opened in a device for storing or using water, a cylindrical drainage device with a flange at the upper end and a screw at the bottom of the circumference, which is inserted into the drain port and tightened and fixed to the device, and a tightening tool. It consists of a gasket tightly attached above and between the outer circumferential surface of the drain device and the outer surface of the device, and a plug that engages with and disengages from the opening on the inner surface of the drain device to open and close the opening, and the drain device has at least a screw. 1. A drainage device characterized in that a groove cut down to a valley is formed in the axial direction, and the packing is provided with a protrusion on the inner circumferential surface thereof to close the groove.