JPS6020703Y2 - Drainage system for ceramic wash basin with overflow - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a drainage device for a ceramic washbasin with an overflow, which is integrally formed with a drainage port for overflow water.

As is well known, a ceramic washbasin with an overflow has a double bottom structure, and the overflow water and normal drainage are made to join together at a drain fitting provided at the drain port.

However, when molding the drain fitting for the lever out of plastic for the purpose of cost reduction, the flange, which is clearly visible from above the washbasin, needs to have the same surface effect as a metal product. At the same time, a stainless steel ring is insert-molded, but if the joint strength is low, the stainless steel ring tends to peel off when tightening.

The present invention provides a drainage system that eliminates the above-mentioned drawbacks of the conventional art, and the present invention will be described below with reference to embodiments and drawings.

1 is a cylindrical main body made of plastic; a flange 3 is provided around the outside of the upper edge of a tapered portion 2 having an inverted truncated cone shape; and a rectangular overflow symmetrically located below the tapered portion 2; Drain holes 4 and 4 have been opened.

Furthermore, a thread groove 5 is carved on the outer circumferential surface of the lower half, and a cross-shaped recess 6 for collecting foreign matter is formed approximately in the middle of the inner side.

8 is a stainless steel ring attached to the upper surface of the main body 1;
It has a tapered surface 8a and an upper end surface 8b in a shape that covers the entire surface of the taper portion 2 and the flange portion 3, and furthermore, a bent piece that is attached to the outer edge of the flange portion 3 is provided on the outer edge of the upper end surface 8b. 9 will be extended,
In addition, the overflow drainage hole 4 at the lower end of the tapered surface 8a,
A bent piece 10 that engages with the upper end edge 4a of the drainage holes 4, 4 extends from the portion facing the drain hole 4, and is integrally formed by pressing a stainless steel plate.

The stainless steel ring 8 thus formed is insert-molded into the main body 1 made of plastic, so that the tapered surface 8a and the upper end surface 8b cover the upper surface of the main body 1, and the bent piece 9
is attached to the outer edge of the flange 3, and the bent piece 10 engages with the upper edge 4a of the overflow drainage hole 4, and is firmly connected to the plastic material to obtain high bonding strength. 8 never peels off from the main body 1.

Furthermore, since both of these bent pieces 9 and 10 cover the edge of the flange 3 and the overflow drainage hole 4 without digging into the interior of the main body 1, the reinforcing effect can be achieved without impairing the strength of the main body 1. This is something that will be demonstrated.

As described above, the drainage device of the present invention has bent pieces extending from the upper and lower ends of a stainless steel ring formed to match the shape of the upper surface of the plastic main body, and these bent pieces are provided on the main body. Since the outer edge of the flange is engaged with the upper edge of the overflow drain hole, the bonding strength of the stainless steel ring to the main body is high, and the conventional drawback of easy peeling when tightening is eliminated. The seed drainage device can be provided at low cost.

[Brief explanation of the drawing]

The drawings show an embodiment of the drainage device according to the present invention, in which FIG. 1 is a perspective view, FIG. 2 is a longitudinal cross-sectional view, and FIG. 3 is a plan view. 1...main body, 2...tapered part, 3.
...Flame, 4.4...Overflow drainage hole, 4 at 4 a...Top edge, 8...
...Stainless steel ring, 8a...Tapered surface,
8b... Upper end surface, 9, 10... Bent piece.

Claims (1)

[Scope of utility model registration request] It has a cylindrical shape and has a tapered part in the shape of an inverted truncated cone at the top.
A flange is provided around the outer side of the upper end of the tapered part, and an overflow drainage hole is provided below the tapered part. A stainless steel ring is formed, and a bent piece that fits on the outer edge of the flange extends from the outer peripheral edge of the upper end surface of the stainless steel ring, and at the lower end of the tapered surface, a bent piece is provided at the upper edge of the overflow drainage hole. A drainage device for a ceramic washbasin with an overflow, comprising extending engaging bent pieces and insert molding the stainless steel ring into the main body.