JPS6131084Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention generally relates to the improvement of drain traps, and more specifically, the present invention relates to improvements in drain traps in general, and more specifically, the invention relates to an improvement in drain traps, and more specifically, a riser pipe installed vertically at a drain outlet such as a sink, and an internal riser pipe, and an upper end of the riser pipe. This drainage trap is equipped with an odor-proofing lid that covers the opening, and is characterized in that the odor-proofing lid can be detachably and securely fixed to the riser pipe.

In conventionally known drainage traps of this type,
Technological means, such as screwing the deodorizing lid directly onto the inner periphery of the trap body, or simply inserting a flange provided around the outer periphery of the deodorizing lid between a step and a protrusion formed inside the trap body; As seen in Japanese Utility Model Publication No. 46-5831, a plate spring with engaging pieces at both ends of the mold is fixed to the center of the ceiling of the deodorizing lid, and the engaging pieces are used to connect the engaging pieces to the drain hole inserted above the drain pipe. While locking on the edge of the hole or providing a plurality of locking bodies inside the deodorizing lid as described in Japanese Utility Model Application No. 53-53044,
The upper end of the riser pipe (drain pipe) is provided with a locking part that locks at a certain rotational position with respect to the locking body, and the engagement of the locking body and the locking part causes the odor prevention This is intended to fix the lid to the riser pipe.

However, with any of these technical means, it is difficult to securely lock and fix both members, and therefore, if vibration occurs in the trap due to drainage of water in the trap, unintentional movement of the odor-proof lid may occur. There still existed a technical problem that the odor-proof lid would loosen or come off as a result, and as a result, the odor-proof lid would float up, deteriorating its functionality.

The present invention was completed as a result of diligent research and improvement to overcome the technical difficulties mentioned above, and the riser pipe and odor-proof lid are firmly fixed in a detachable manner by a wedge action. The purpose of this project is to provide a new drainage trap that makes it possible.

Hereinafter, the structure of the present invention will be described in more detail with reference to the drawings of the embodiments. 1 is a sink such as a sink, 2 is a trap body installed vertically over the drain outlet of the sink, and 3 is a trap body that can be detachably attached to the upper opening of the trap body 2. It is a fitted cover made of an elastic material, and has a number of tongue-shaped pieces 3a cut out radially from the center thereof and can be opened and closed freely, and 4 is an inner part that can be freely fitted and removed from the trap body 2. It is a kitchen waste basket.

Reference numeral 5 designates a riser pipe that projects upward from the bottom of the trap body 2, and a plurality of outer circumferential protrusions 6, each of which has a lower surface inclined in the same direction, are provided on its upper outer periphery at required intervals. Slightly below these protrusions 6, protrusions 7 are provided with packing 11 made of a relatively thin elastic material attached to the upper surface.

Reference numeral 8 denotes a bowl-shaped deodorizing lid that covers the upper end opening of the riser pipe 5, and the same number of supports 9 corresponding to the outer circumferential protrusions 6 are provided inside the lid, and the outer circumferential protrusions 6 are provided on the inner side of the end thereof. Inner circumferential protrusions 10 having sloped upper surfaces in the opposite direction to the above are formed, and these inner circumferential protrusions 10 are inserted into the gaps between the outer circumferential protrusions 6, and their lower ends are brought into contact with the protrusions 7. In addition, by rotating the deodorizing lid 8 by a certain amount, the inclined surface of each inner circumferential protrusion 10 received by the protrusion 7 through the packing 11 becomes the corresponding inclination of each outer circumferential protrusion 6. The odor-proof lid is wedged into the surface and can be securely fixed to the riser pipe.

In addition, in the figure, 12 is a flange formed on the outer periphery of the deodorizing lid, which can be freely engaged with the intermediate step 2a of the main body 2, and 13 indicates a number of drainage ports bored in the flange. .

The drainage trap of the present invention having the structure described above not only allows the deodorizing lid 8 to be attached to the riser pipe 5 very easily, and can be securely fixed to the extent that no movement or floating occurs during use. When it becomes necessary to remove the deodorizing lid 8 from the riser pipe 5, such as when cleaning the
As long as the inner protrusion 10 is slightly rotated in the opposite direction (the direction of the arrow in FIG. 3) than when the odor-proof lid is attached, the clamping between the outer protrusion 6 and the protrusion 7 is immediately released, and the odor-proof lid is removed. 8 can be easily removed from the riser pipe 5.

As described in detail above, according to the present invention, by making it possible to attach and detach the odor-proof lid to the riser pipe extremely smoothly, it is possible to assemble and clean the drain trap easily and quickly, and also to ensure that both of the above are engaged. The method is based on the wedge action between the inner protrusion of the odor-proof lid and the outer circumferential protrusion of the riser pipe, so the odor-proof cover is very firmly fixed to the riser pipe, ensuring that it does not move or loosen. As a result, there is no floating or falling off of the odor-proof lid when using the drain trap, making it possible to effectively block odors from the riser pipe at all times, and in addition, its construction is relatively simple. Because of this, its practical value is enormous, as drainage traps with the above-mentioned outstanding effects can be produced and supplied at low cost.

[Brief explanation of the drawing]

The drawing shows an example of the proposed drainage trap, and the first
The figure is a longitudinal cross-sectional view of the central part, FIG. 2 is an enlarged front view showing a main part cut away, and FIG. 3 is a cross-sectional view taken along the line AA in FIG. 2. In addition, in the figure, 1... sink, 2... main body, 3...
Cover, 4... Kitchen waste basket, 5... Standpipe, 6... Outer periphery projection, 7... Projection, 8... Odor-proof lid, 9... Support body, 10... Inner periphery projection, 11... Packing ,1
2...Flange, 13...Drain port.

Claims (1)

[Scope of utility model registration request] In a drainage trap in which a riser pipe is installed vertically from the bottom of the trap body vertically installed in the sinkhole, and an odor-proof lid is installed to cover the upper end opening of the riser pipe, the bottom surface is attached to the upper outer periphery of the riser pipe 5. protrudes a plurality of outer circumferential protrusions 6 having inclinations in the same direction, and
A protrusion 7 is provided around the lower part of the ridge 7, and an inner surface is provided inside the deodorizing lid 8, which corresponds to the outer periphery protrusion 6 via a support 9, and whose upper surface has an inclined surface in the opposite direction to that of the outer periphery protrusion. A drainage trap characterized in that a circumferential protrusion 10 is provided in a protruding manner, and the inner circumferential protrusion 10 can be wedged between an outer circumferential protrusion 6 of the riser pipe 5 and a protrusion 7 to which a packing 11 is attached.