KR101694497B1 - Apparatus for coupling drainpipe with trap-pipe - Google Patents

Abstract

The present invention relates to an apparatus to couple a drain pipe and a trap pipe with a reinforced backflow prevention function and, more specifically, relates to an apparatus to couple a drain pipe and a trap pipe with a reinforced backflow prevention function which conveniently and quickly couples the drain pipe and the trap pipe, and forcibly blocks a backflow through the trap pipe. According to the present invention, the apparatus comprises: an upper coupling tool receiving the drain pipe inserted from an upper part; a lower coupling tool receiving the trap pipe inserted from a lower part, and combined with an upper coupling tool; a sealing pipe embedded in the upper coupling tool and closely attached on an outer surface of the inserted drain pipe; and a backflow blocking cap received in a reception part formed in an inner upper part of the lower coupling tool. The backflow blocking cap is able to be lifted/lowered in a reception part and closes a bottom opening part of the sealing pipe by being lifted when a backflow material enters the reception part through the trap pipe.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drain pipe and a trap pipe,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fastening device for fastening a drain pipe of a toilet bowl to a trap pipe, and more particularly to a fastening device for fastening a drain pipe and a trap pipe in a simple and quick manner, And more particularly to a fastening device for an enhanced drain pipe and a trap pipe.

Generally, a bathroom or toilet is equipped with a washbasin to wash hands.

The wash basin is connected to a drain pipe for draining water, and the drain pipe is provided with a 'U' shaped trap pipe to prevent drainage or odor from flowing back.

The drainage pipe and the trap pipe of the washstand are connected by a slip nut. Since the space under the washstand is narrow, it is difficult to complete the turning radius for a tool such as a spanner for turning the slip nut. Thus, the operation of tightening the drain pipe and the trap pipe with the slip nut It is not easy, and the slip nut can not tightly fasten the drain pipe and the trap pipe, so that the sewage often leaks from the slip nut.

To solve such a problem, Japanese Patent No. 10-1169771 entitled "Washtub drain pipe connecting device" has an upper joining member coupled to an end of a drain pipe such that an elastic piece radially protruding radially from the inner circumferential surface is in close contact with an outer circumferential surface of the drain pipe; A sealing member coupled to the upper joint member and having at least one sealing protrusion closely attached to an outer circumferential surface of the drain pipe; A lower engaging member coupled to the upper engaging member so that an end of the trap is connected to the lower engaging member; And a drain guide member which is seated to receive the protruding ribs in the lower fitting member to block the reverse flow of the odor while guiding the wastewater drainage.

The above-mentioned Japanese Patent No. 10-1169771 is simple and quick in installation since the end portion of the trap tube is coupled to the lower coupling member, the upper coupling member is coupled to the lower coupling member, and then the upper coupling member is coupled. In addition, the water desalinated in the storage space of the lower joining member and the backflow preventing member provided in the drainage guiding member block the reverse flow of the odor.

However, in the above-mentioned Japanese Patent No. 10-1169771, when the gas (that is, the odor) flows backward, the water and the counterflow prevention member block the water in the storage space, but when the liquid (sewage) flows backward, .

When the gas (stench) is momentarily strong counter-current, the counter-current is prevented and the backflow is allowed.

That is, the above-mentioned Japanese Patent No. 10-1169771 has a somewhat insufficient function to prevent backflow of odors and sewage.

In addition, in the above-mentioned Japanese Patent No. 10-1169771, the sealing member closely attached to the outer surface of the drain pipe has a simple ring structure, so that the shape is deformed during long-term use, and the water tightness is weak.

Disclosure of Invention Technical Problem [8] Accordingly, the present invention has been conceived to solve the problems of the prior art as described above, and it is an object of the present invention to solve the problems of the prior art, And it is an object of the present invention to provide a drain pipe and a trap pipe fastening device with enhanced reverse flow blocking function that can prevent water from leaking.

To achieve the above object, according to the present invention, there is provided an apparatus for fastening a drain pipe and a trap pipe,

An upper coupling portion into which the drain pipe is inserted from above;

A lower coupling member inserted into the trap pipe from below and engaged with the upper coupling member;

A sealing pipe embedded in the upper coupling hole and closely attached to the outer surface of the inserted drain pipe;

And a backflow blocking cap that is seated in a seating portion formed in an inner upper portion of the lower coupling opening,

The backflow shutoff cap is movable up and down by the seat portion. When the backflow water flows into the seat portion through the trap pipe, the backflow shutoff cap is lifted and closed to close the lower end opening of the sealing pipe.

And the upper surface of the backflow blocking cap is inclined to be inserted into and close to the inner surface of the opening of the sealing tube,

And a grip protrusion protruding from the upper surface of the backflow blocking cap.

A lower step is formed in a lower part of the inner surface connected to the lower part of the coupling part, and a lower part is formed on the inner surface between the guide part and the lower step, A step is formed,

Wherein the ceiling pipe has an upper end blocked by the lower end of the guide portion, an outer surface step formed on the outer surface of the ceiling pipe, an outer surface step formed on the outer surface of the ceiling pipe, So that a step is formed.

The drain pipe and the trap pipe fastening device having the reverse flow shutoff function according to the present invention can be connected to the drain pipe and the trap pipe without a separate tool, so that the quick and easy installation and maintenance can be performed. It is a tightening device for drainage pipe and trap pipe which is tightly and firmly connected to prevent leakage of sewage and has a reverse flow shutoff function that more reliably blocks backwash of sewage and instant odor through a backflow blocking cap and a sealing pipe. This is a very useful invention.

FIG. 1 is a structural view of a wash basin provided with a drain pipe and a trap pipe fastening device reinforced with a reverse flow shutoff function according to the present invention. FIG.
FIG. 2 is a perspective view of a fastening device of a drain pipe and a trap pipe reinforced with a reverse flow shutoff function according to the present invention. FIG.
3 is an exploded perspective view of Fig.
FIG. 4 is a sectional view illustrating an operation state of a fastening device for a drain pipe and a trap pipe reinforced with a reverse flow shutoff function according to the present invention. FIG.

BRIEF DESCRIPTION OF THE DRAWINGS The above and other objects, features and advantages of the present invention will be more apparent from the following detailed description taken in conjunction with the accompanying drawings, in which: FIG.

Before describing the present invention in more detail,

While the present invention has been described in connection with certain exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the invention. It is to be understood, however, that the invention is not intended to be limited to the particular forms disclosed, but on the contrary, is intended to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.

In the drawings, the same reference numerals are used for the same reference numerals, and in particular, the numerals of the tens and the digits of the digits, the digits of the tens, the digits of the digits and the alphabets are the same, Members referred to by reference numerals can be identified as members corresponding to these standards.

In the drawings, the components are expressed by exaggeratingly larger (or thicker) or smaller (or thinner) in size or thickness in consideration of the convenience of understanding, etc. However, It should not be.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The singular expressions include plural expressions unless the context clearly dictates otherwise. In the present application, the term " comprising " or " consisting of ", or the like, refers to the presence of a feature, a number, a step, an operation, an element, a component, But do not preclude the presence or addition of one or more other features, integers, steps, operations, components, parts, or combinations thereof.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Terms such as those defined in commonly used dictionaries are to be interpreted as having a meaning consistent with the contextual meaning of the related art and are to be interpreted as either ideal or overly formal in the sense of the present application Do not.

As shown in the drawing, the fastening device for the drain pipe and the trap pipe reinforced with the reverse flow blocking function according to the present invention includes an upper coupling hole 10, a lower coupling hole 30, a sealing pipe 50, .

The upper coupling hole (10) is inserted into the upper part of the drain pipe (1).

A guide portion 11 for guiding insertion of the drain pipe 1 is protruded from the upper surface of the inner surface of the upper coupling hole 10. The upper portion of the guide portion 11 is tapered to guide the drain pipe 1 into the inside even if the drain pipe 1 is not inserted at the correct position.

A screw thread 13 screwed to the lower coupling hole 30 is formed in an inner lower surface of the upper coupling hole 10.

An upper step 14 is formed on the inner surface of the lower part of the guide part 11 and a lower step 15 is formed on the inner surface of the lower part where the thread 13 ends.

A plurality of reinforcing protrusions 16 protrude in the vertical direction on the inner surface of the upper coupling hole 10 between the upper step 14 and the lower step 15.

The reinforcing projection 16 prevents the body of the upper coupling hole 10 from being deformed and allows the ceiling pipe 50 to be easily inserted into the upper coupling hole 10, So that the drain pipe (1) is easily inserted into the inside.

The lower coupling hole (30) is inserted into the lower portion of the trap pipe (3).

A screw thread 33 screwed to the upper coupling hole 10 is formed on the inner surface of the lower coupling hole 30.

A partition wall 31 is formed at an inner intermediate portion of the lower coupling hole 30 so as to separate the upper and lower sides.

A drain hole 32 through which wastewater passes and falls is formed in the partition 31.

A downward projecting portion 35 inserted into the trap tube 3 is formed at the lower side of the drain hole 32 in the partition wall 31 and a lower projecting portion 35 is formed at the upper side of the drain hole 32 The upper projecting portion 34 is formed.

A threaded tab 39 is formed on an inner surface of a lower side of the lower coupling hole 30 separated by the partition 31 to be screwed with the trap tube 3, And the lower end of the spacing protrusion 36 supports the lower end of the backflow blocking cap 70 to ensure a space between the partitioning wall 31 and the bottom of the partitioning wall 31. [ A supporting jaw 37 is formed.

The sealing pipe 50 is inserted into a lower portion of the upper coupling hole 10, and a drain pipe 1 is inserted into the upper portion of the upper coupling hole 10 to be embedded therein.

The outer surface of the sealing tube 50 is formed with an outer stepped portion 54 which is engaged with the upper step 14 of the upper coupling hole 10 and a lower stepped portion 15 of the upper coupling hole 10, And an inner surface step 51 is formed on the lower surface of the inner surface of the water pipe 1 so that the lower end of the water pipe 1 is caught and clogged.

The upper end of the sealing pipe 50 is plugged with the lower end of the guide portion 11 protruding from the inner surface of the upper coupling hole 10 and the vane 55 is connected to the upper coupling hole 10, (30).

Adhesive projections (52) are formed on the inner circumferential surface of the sealing tube (50) to closely adhere to the outer surface of the inserted drain pipe (1).

The contact protrusions 52 are inclined gradually from the upper portion to the lower portion and have a structure that is abruptly inclined from the point of maximum protrusion to the lower portion so that the insertion of the water pipe 1 is facilitated, So that it is not easily separated by an intentional external force and is tightly adhered to the outer surface of the water pipe 1 in multiple stages to prevent water leakage.

The backflow blocking cap 70 is seated in the upper seating portion 38 of the lower coupling hole 30 formed by the partition 31.

At this time, the seating portion 38 has a sufficient length in the upward direction so that the backflow blocking cap 70 can move up and down.

The backflow blocking cap 70 normally closes the drain hole 32 formed in the partition wall 31 together with the water contained in the seating portion 38 of the lower coupling hole 30, To prevent backflow.

When the wastewater flows backward, the wastewater is floated (raised and lowered) by the backwashing water to close the lower end opening of the sealing pipe 50 to block the backwashing of the wastewater. Even when the gas is strongly backwashing momentarily, Thereby closing the lower end opening of the sealing pipe 50 to block the back flow of the gas.

The reverse flow blocking cap 70 is inserted into the opening of the sealing tube 50 at the center of the upper surface so that the reverse flow blocking cap 70 ascends and closes the opening of the sealing tube 50 more tightly And the edge has a structure in which the upper surface is inclined so as to be abutted against the lower end surface of the opening portion.

 The backflow blocking cap 70 is gripped by the hand at the center of the upper surface of the backflow blocking cap 70 so that the backflow blocking cap 70 can be inserted into the seating portion 38 of the lower coupling hole 30, (71) protruding from the surface.

The installation procedure of the fastening device of the drain pipe (1) and the trap pipe (3) reinforced with the reverse flow blocking function according to the present invention is as follows.

First, the lower coupling hole 30 is fastened to the upper portion of the trap tube 3, the reverse flow blocking cap 70 is inserted into the upper seating portion 38 of the lower coupling hole 30, and the sealing pipe 50 is pushed And the lower end of the water pipe 1 is pushed in from the upper part of the upper fitting hole 10 so that the water pipe 1 is connected to the water pipe 1 using the fastening device according to the present invention. And the trap tube 3 are completed.

It is also possible to fasten the upper coupling hole 10 and the lower coupling hole 30 after the drain pipe 1 is pushed into the upper coupling hole 10 in which the sealing pipe 50 is installed. And the drain pipe 1 interfere with the rotation of the upper coupling hole 10 for fastening.

4, the wastewater flowing in the drain pipe 1 flows down on the surface of the backflow blocking cap 10 to be separated from the side wall of the seating portion 38 and the supporting jaw 37, as shown in [A] Into the inside of the reverse flow blocking cap 10 through the drain hole 32 and discharged to the trap pipe 3,

As shown in [B], the odor backwashing in the trap pipe 3 is blocked by the water dewatered at the bottom of the backflow blocking cap 70 and the seat part 38 and can not flow into the drain pipe 1,

As can be seen from [C], the wastewater flowing back in the trap tube 3 (which may include a strong backwashing odor in the trap tube) floats the backflow blocking cap 70 to close the sealing tube 50, 1) is blocked.

While the present invention has been described in connection with the preferred embodiments thereof with reference to the accompanying drawings, it is to be understood that the present invention may be embodied with various changes and modifications Such variations and modifications are to be construed as being within the scope of protection of the present invention.

1: drain pipe 3: trap pipe
10: upper coupling part 11: guide part
14: upper step 15: lower step
16: reinforcing projection
30: lower coupling hole 31: partition wall
32: drain hole 34: upper protrusion
34: downward projecting portion 36: spacing projection
37: support jaw 38:
50: sealing pipe 51: inner surface step
52: contact projection 54: outer surface step
55: Wings
70: reverse flow shutoff cap 71:

Claims (4)

An upper coupling portion into which the drain pipe is inserted from above;
A lower coupling member inserted into the trap pipe from below and engaged with the upper coupling member;
A sealing pipe embedded in the upper coupling hole and closely attached to the outer surface of the inserted drain pipe;
And a backflow blocking cap that is seated in a seating portion formed in an inner upper portion of the lower coupling opening,

The backflow shutoff cap is movable up and down by the seat portion. When the backflow water flows into the seat portion through the trap pipe, the backflow shutoff cap is lifted and closed to close the lower end opening of the sealing pipe,
The upper surface of the backflow blocking cap is inclined so as to be inserted into the inner surface of the opening portion of the sealing tube,

A lower step is formed in a lower part of the inner surface connected to the lower part of the coupling part, and a lower part is formed on the inner surface between the guide part and the lower step, A step is formed,
Wherein the ceiling pipe has an upper end blocked by the lower end of the guide portion, an outer surface step formed on the outer surface of the ceiling pipe, an outer surface step formed on the outer surface of the ceiling pipe, A step is formed,

A plurality of reinforcing protrusions 16 protrude from the inner surface of the upper coupling hole 10 between the upper step 14 and the lower step 15 in the vertical direction,

A partition wall (31) having a drain hole through which wastewater passes is provided at an inner intermediate portion of the lower coupling hole (30)
Wherein the partition wall is formed with a downward protrusion inserted into the trap pipe. delete The method according to claim 1,
And a gripping protrusion protruding from the upper surface of the backflow blocking cap is formed to protrude from the upper surface of the backflow blocking cap. delete

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