KR101672613B1 - Preparation method of integral drain pipe for pop-up type opening/closing device of sink - Google Patents

Abstract

[0001] The present invention relates to a method of manufacturing an integral type drain pipe for a pop-up type opening and closing apparatus of a sink, and an integral drain type pipe for a pop-up type opening and closing apparatus of a sink, The present invention relates to a technique for manufacturing an integrated type, not a separate manufacturing method.
INDUSTRIAL APPLICABILITY According to the present invention, the integrated drain pipe for a pop-up type switch-over device of the present invention is applied to a drain port of a washstand so that the drain pipe draining water from the washstand can be manufactured in an integrated form without requiring an intermediate connection, And manufacturing cost can be drastically reduced. Also, since it is manufactured in one piece, there is no fear of leakage and it is advantageous in that it is easy to assemble when it is applied to a washstand.

Description

[0001] The present invention relates to a method of manufacturing an integral drain pipe for a pop-up type switchgear of a sink, and a preparation method of an integral drain pipe for a pop-

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of manufacturing an integrated drain pipe for a pop-up type opening and closing apparatus of a sink, and an integrated drain pipe for a van type pop-up type opening and closing apparatus manufactured by the method, Thereby making it possible to drastically reduce the manufacturing time and manufacturing cost of the drain pipe, and a monolithic drain pipe for a pop-up type opening / closing device for a van for a sink manufactured by the above method.

Generally, a drainage hole is connected to a sink, and a lever-type opening and closing device and a pop-up type opening and closing device are mainly used as opening and closing devices for controlling the opening and closing of the drainage port.

Among them, the pop-up type switching device is installed between the drain port and the drain pipe of the washstand, and when the drain port cover constituting the opening and closing device is pressed once, the drain port is opened and once again, the drain port is sealed. Recently, usage is increasing.

The pop-up type opening and closing device is provided inside the opening and closing device accommodating pipe which is installed to be connected to the drain port of the washstand, and the opening and closing device accommodating pipe is drained to the outside through the connecting pipe at the lower part.

Fig. 1A shows the overall shape of a conventional drain pipe for a pop-up type switching device, and Fig. 1B shows an exploded view thereof.

1A and 1B, a conventional drain pipe for a pop-up type opening and closing apparatus of a washstand is generally divided into two parts, that is, an opening / closing device accommodating pipe 2 and a lower connecting pipe 3, The receiving tube (2) and the connecting tube (3) are fastened and coupled by a screw thread formed on a lower inner peripheral surface of the opening and closing device receiving tube and a thread provided on an upper outer peripheral surface of the connecting tube, The rubber ring 4 is usually provided.

Since such a conventional drain pipe structure is made up of two parts, it is necessary to separately manufacture each pipe, so that it is complicated. Since it is divided into two parts, it takes a lot of material cost, and separate work for assembling two parts is necessary In addition, there is a problem that an additional part is required for watertightness at the connection part of the two parts, which increases the production period and raises production cost. In addition, if the assembly can not be accurately assembled at the connection site, there is a problem that water leakage occurs due to the water tightness.

≪ Related Prior Art Literature >

1. Korean Patent No. 10-0678385

2. Korean Utility Model Registration No. 20-0461793

3. Korean Patent No. 10-1391478

The present invention has been developed in view of the above circumstances, and it is an object of the present invention to provide a drain pipe for drainage of water in a washstand, which is applied to a drain of a washstand, The present invention provides a method of manufacturing a monolithic drain pipe for a pop-up type opening and closing device of a sink of a sink and a monolithic drain pipe for a pop-up type opening and closing device of a sink of a sink manufactured by the above method, which can be remarkably reduced in time and manufacturing cost, I want to.

According to an aspect of the present invention,

(a) preparing a metal pipe made of a cylindrical body having a hollow portion formed therein;

(b) joining a flange for inserting and supporting the cylindrical body into a drainage port of the washstand at one end of the metal pipe;

형상 단면의 내부 공간을 갖는 지지홀더에 삽입한 상태에서, 상기 금속 파이프의 내경보다 큰 외경을 가지며

형상 단면을 갖는 내경 확장부재가 직하 방향으로 구비된 상부 플레이트를 하부 플레이트 방향으로 이동시켜 압하시킴에 의해 상기 금속 파이프의 상부측의 내경을 확장하는 단계; 및(c) a metal pipe to which the flange is bonded is provided on a lower plate of the press machine

Wherein the metal pipe has an outer diameter larger than an inner diameter of the metal pipe in a state of being inserted into a support holder having an inner space of a shape section

Expanding the inner diameter of the upper side of the metal pipe by moving the upper plate having the inner diameter expanding member having the shape section in the direction of the lower plate to the lower plate direction and pressing it down; And

(d) forming a screw thread and a bypass hole in the outer circumferential surface of the upper portion of the metal pipe, the inner diameter of the metal pipe being expanded;

The present invention also provides a method of manufacturing a drain pipe for a washstand.

In order to achieve the above object,

형상의 단면을 이루고, 상기 상부 구간의 외주면에는 배수관을 배수구에 고정하는 너트를 삽입하기 위한 나사산 및 바이패스관 연결을 위한 바이패스홀이 구비되어 있는 것을 특징으로 하는 세면대용 배수관 구조를 제공한다.
An upper section having a relatively large diameter and a lower section having a relatively small diameter are integrally connected to each other and a connecting portion between the upper section and the lower section is formed at a predetermined angle And the inner space of the drain pipe

And a bypass hole for connecting a nut and a bypass pipe for inserting a nut for fixing the drain pipe to the drain pipe is provided on the outer peripheral surface of the upper section.

The method and the advantages of the integral type drain pipe for a pop-up type opening and closing apparatus of a sink according to the present invention and the integrated drain pipe for a van type pop-up type opening and closing apparatus manufactured by the method will be described as follows.

First, since it is manufactured in a drainage pipe that drains the water of the washstand applied to the drain of the washstand, it is not formed of two parts of the opening and closing device receiving pipe and the connecting pipe but is integrally formed without distinguishing the opening and closing device receiving pipe and the connecting pipe. The manufacturing process is simplified as compared with the case where the opening and closing device accommodating pipe and the connecting pipe are processed by using the process, and thus the manufacturing time and manufacturing cost of the drain pipe can be drastically reduced. And there is no need to prepare separate parts for the intermediate connection, which is advantageous in that it is very convenient to process and assemble.

Fig. 1A shows the overall shape of a conventional drain pipe for a pop-up type switching device, and Fig. 1B shows an exploded view thereof.
FIG. 2A shows the overall shape of the integral type drain pipe for the opening and closing device of the van for the sink, according to the embodiment of the present invention, and FIG. 2B shows an exploded view thereof.
FIG. 3 is a view showing a manufacturing procedure of the integrated drain pipe for a pop-up type switch-off apparatus according to an embodiment of the present invention.
4 is a detailed view illustrating a process of expanding the inner diameter of the upper side of the metal pipe in the manufacturing procedure of FIG.
FIG. 5 is a cross-sectional view showing a state in which the integral type drain pipe for the opening / closing device of the sink type pop-up device according to the embodiment of the present invention is applied to the sink.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. It should be understood, however, that the detailed description and specific examples, while indicating preferred embodiments of the invention, are given by way of illustration only, and thus are not limitative of the scope of the invention.

FIG. 2A shows the overall shape of the integral type drain pipe for the opening and closing device of the van for the sink, according to the embodiment of the present invention, and FIG. 2B shows an exploded view thereof.

As shown in FIGS. 2A and 2B, the integrated drain pipe for a pop-up type switching device according to the present invention is different from the conventional one in that the receiving pipe and the connecting pipe of the pop- As shown in FIG.

In this case, the metal pipe 10 constituting the main body is provided with a flange 20 for inserting and supporting the drain pipe of the washstand at the upper end thereof. The diameter of the upper section 10-1 is smaller than the diameter of the lower section 10-2 (10-4) for fastening a nut (40) for fixing the drain pipe to the drain hole is provided on the outer circumferential surface of the upper section, and on the one side of the upper section, A pass hole 30 is provided.

In the drain pipe according to the present invention, the upper portion of the metal pipe 10 having a relatively large diameter and the lower portion having a relatively small diameter are not integrally formed but are integrally formed, and the upper portion and the lower portion And a step 10-3 is formed at a predetermined angle in a connecting portion of the first housing 10A.

The drain pipe structure according to the present invention is manufactured by the process of FIG.

FIG. 3 is a view showing a manufacturing procedure of the integral type drain pipe for a poppet type opening and closing apparatus of a sink according to an embodiment of the present invention. FIG. 4 is a view showing a process of enlarging the inner diameter of the upper side of the metal pipe FIG.

Referring to FIGS. 3 and 4, the integral type drain pipe for the opening / closing device of the sink type pop-

(a) preparing a metal pipe (10) made of a cylindrical body having a hollow portion formed therein;

(b) joining a flange (20) to one end of the metal pipe (10) for inserting and supporting the cylindrical body into the drain hole of the washstand;

형상 단면의 내부 공간을 갖는 지지홀더(120)에 삽입한 상태에서, 상기 금속 파이프(10)의 내경보다 큰 외경을 가지며

형상 단면을 갖는 내경 확장부재(130)가 직하 방향으로 구비된 상부 플레이트(100)를 하부 플레이트 방향으로 이동시켜 압하시킴에 의해 상기 금속 파이프의 상부측의 내경을 확장하는 단계; 및(c) The metal pipe to which the flange is bonded is provided on the lower plate 110 of the press machine

In a state of being inserted into the support holder 120 having the internal space of the shape cross-section, the outer diameter of the metal pipe 10 is larger than the inner diameter of the metal pipe 10

Extending the inner diameter of the upper side of the metal pipe by moving the upper plate (100) with the inner diameter enlarging member (130) having the shape of the cross section in the direction of the lower plate by pushing down; And

(d) forming a screw thread (10-4) and a bypass hole (30) on an outer circumferential surface of an upper portion of the metal pipe (10) having an expanded inner diameter.

In the present invention, the inner diameter expanding member is formed by moving the upper plate 100 in the direction of the lower plate 110 so that the tapered portion of the end is inserted into the upper end of the metal pipe 10 inserted into the support holder 120 And then the length of the metal pipe 10 is expanded downward through a hydraulic device (not shown) connected to the upper plate 100 to expand the inner diameter of the metal pipe 10 (see FIG. 4).

In the present invention, the metal pipe may be processed at room temperature while being loaded on the support holder 120 and being enlarged thereon. However, in order to increase the manufacturing efficiency and improve the quality, it is preferable to perform hot rolling.

That is, in the step (c), the metal pipe 10 to which the flange is bonded is preferably preheated at a temperature of 800 to 1200 ° C in a heating furnace.

Thus, the upper portion and the intermediate connection portion of the metal pipe 10 can be formed according to the outer shape of the inner diameter expanding member 120 and the inner shape of the support holder 120.

FIG. 5 is a cross-sectional view showing a state in which the integral type drain pipe for the opening / closing device of the sink type pop-up device according to the embodiment of the present invention is applied to the sink.

As shown in FIG. 5, the integral type drain pipe for a pop-up type switch-on / off device according to the present invention is integrally formed and is applied to a drain port of the washstand 200 by fastening the lower nut 40, ) To the bypass hole (30).

INDUSTRIAL APPLICABILITY As described above, the integral type drain pipe for a sink type pop-up type switching device according to the present invention is applied to a drain port of a washstand to manufacture a drain pipe for draining water from a sink, It is possible to drastically reduce the manufacturing time and manufacturing cost of the drain pipe, and it is advantageous in that it is easy to assemble when it is applied to the wash basin because there is no fear of leakage because it is manufactured as one body.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the present invention as defined by the appended claims. You will understand.

1: opening / closing device 2: opening / closing device accommodating pipe
3: Connector 4: Rubber ring
5: Nut
10: metal pipe 20: flange
30: Bypass hole 40: Nut
50: Pipe pipe 100: Upper plate (press)
101: Lower plate (press) 120: Support holder
130: inner diameter expanding member 200:

Claims (3)

(a) preparing a metal pipe made of a cylindrical body having a hollow portion formed therein;
(b) joining a flange for inserting and supporting the cylindrical body into a drain hole of the washstand at one end of the metal pipe;
(c) a metal pipe to which the flange is bonded is provided on a lower plate of the press machine

Wherein the metal pipe has an outer diameter larger than an inner diameter of the metal pipe in a state of being inserted into a support holder having an inner space of a shape section

Expanding the inner diameter of the upper side of the metal pipe by moving the upper plate having the inner diameter expanding member having the shape section in the direction of the lower plate to the lower plate direction and pressing it down; And
(d) forming a screw thread and a bypass hole in the outer circumferential surface of the upper portion of the metal pipe, the inner diameter of the metal pipe being expanded;
And,
In the step (c), the metal pipe to which the flange is bonded is loaded on the support holder, and the upper portion thereof is enlarged by hot rolling using a preheated hot plate at a temperature of 800 to 1200 ° C. .
In the step (c), the upper plate is moved in the direction of the lower plate so that the tapered portion of the end portion is inserted into the upper end of the metal pipe inserted in the support holder, and then, through the hydraulic device connected to the upper plate, The metal pipe having a length extending downward to expand an inner diameter of the metal pipe,
And an upper portion and an intermediate connection portion of the metal pipe are formed according to an outer shape of the inner diameter expanding member and an inner shape of the support holder,
Is formed integrally through the step (d) and is applied to the drain of the washstand by fastening the lower nut
A method for manufacturing a drain pipe for a sink.

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