JPH04133089U - pipe joint structure - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a pipe joint structure with excellent sealing effect. [Structure] In a pipe joint structure in which a socket 5 is inserted into a socket 4, a first rubber ring 6 is inserted between the inner peripheral surface of the distal end of the socket 4 and the outer peripheral surface of the socket 5, A stepped portion 4A formed at the center of the inner peripheral surface of the socket 4 and the first rubber ring 6
A second rubber ring 7 is inserted between the first rubber ring 6 and the second rubber ring 7 at a distance from the first rubber ring 6.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This invention relates to pipe joint structures, especially pipe joint structures with excellent sealing effects. It is something that

0002

[Conventional technology]

An example of a conventional pipe joint structure will be described with reference to the drawings. FIG. 4 is a partial cross-sectional view of a conventional pipe joint structure. As shown in Fig. 4, as an example of a conventional pipe joint structure, the inner peripheral surface of the tip of the socket 1 and There was one in which a rubber ring 3 for sealing was inserted between the outer peripheral surface of the insertion opening 2. According to this type of pipe joint structure, the sealing performance of the pipe joint part is improved by the action of the rubber ring 3. is guaranteed to some extent.

0003

[Problem that the idea aims to solve]

However, the conventional pipe joint structure described above has the following problems. Ru. That is, when sending a liquid such as water under pressure, the rubber ring 3 expands due to the pressure. can prevent leakage, but when sending a gas with a significantly lower viscosity than water at low pressure. There is a risk of gas leaking. Therefore, the purpose of this invention is to provide an excellent solution for sending not only liquids but also gases at low pressure. The object of the present invention is to provide a pipe joint structure that can obtain sealing properties.

0004

[Means to solve the problem]

This idea is suitable for pipe joint structures consisting of a socket inserted into a socket. , a first rubber ring is inserted between the inner circumferential surface of the tip of the receptacle and the outer circumferential surface of the insertion port; between the step formed at the center of the inner peripheral surface of the socket and the first rubber ring. A second rubber ring is inserted with a space between the first rubber ring and the first rubber ring as necessary. The rubber ring is characterized in that a sealing material is filled between the rubber ring and the second rubber ring. It is.

[0005] Next, one embodiment of the pipe joint structure of this invention will be described with reference to the drawings. FIG. 1 is a partial sectional view showing an embodiment of the pipe joint structure of this invention, and FIG. FIG. 3 is a partial cross-sectional view showing the state of the pipe joint structure before connection, and FIG. 3 shows another pipe joint of this invention. FIG. 3 is a partial cross-sectional view showing the structure.

[0006] In FIG. 1, 4 is a receptacle, and 5 is an insertion port inserted into the receptacle 4. A stepped portion 4A is formed in the center of the inner circumferential surface of the socket 4, with which a second rubber ring, which will be described later, comes into contact. A protrusion 4B into which a first rubber ring to be described later is fitted is formed on the inner peripheral surface of the tip of the socket 4. has been done. 6 is a first rubber ring. The first rubber ring 6 is received on its horizontal outer peripheral surface. A recess 6A into which the protrusion 4B of the mouth 4 fits is formed. The first go before insertion of the insertion port 5 The wall thickness of the ring 6 is thicker than the distance between the inner peripheral surface of the receptacle 4 and the outer peripheral surface of the insertion port 5. follow As a result, the first rubber ring 6 is compressed after the insertion port 5 is inserted, resulting in an excellent seal. You can get sex. The first rubber ring 6 is inserted into the protrusion 4C of the socket 4 before inserting the socket 5. be fitted into. 7 is a second rubber ring with a circular cross section, and is connected to the stepped portion 4A of the socket 4. The first rubber ring 6 is inserted at a distance of 8 from the first rubber ring 6 . Insertion port 5 The diameter of the second rubber ring 7 before insertion is the distance between the inner circumferential surface of the socket 4 and the outer circumferential surface of the insertion port 5. longer than the interval. Therefore, the second rubber ring 7 is a knot that is compressed after the insertion port 5 is inserted. As a result, an excellent sealing effect can be obtained.

[0007] To connect the socket 4 and the socket 5, first insert the first rubber ring 6 and the socket inside the socket 4. All you have to do is fit the first rubber ring 7 and the second rubber ring 7, and then insert the socket 5 into the socket 4. An excellent sealing effect can be obtained by the action of the first rubber ring 6 and the second rubber ring 7.

[0008] As shown in FIG. 3, a sealing material 9 is provided within the interval 8 between the first rubber ring 6 and the second rubber ring The sealing effect will be further improved if filled with The sealing material 9 is filled in advance in the space 8 between the first rubber ring 6 and the second rubber ring 7. Alternatively, as shown in FIG. Even if the liquid sealing material 9 is filled into the space 8 through the through hole 10 after being inserted into the socket 4, good. In this case, after filling the liquid sealing material 9, the plug 11 is screwed into the through hole 10, and the seal is sealed. Prevent the flow of the roll material 9. In addition, as shown in Figure 1, after inserting the insertion port 5 into the socket 4, there is no leakage of water or gas. When this occurs, the hole 4 penetrating the gap 8 between the first rubber ring 6 and the second rubber ring 7 is opened. After that, the sealing material 9 may be filled into the space 8.

[0009]

[Effect of the idea]

As explained above, according to this invention, two rubber rings can be provided at the pipe joint. This provides an excellent sealing effect when transporting not only liquids but also gases at low pressure. This brings about useful effects such as being able to.

[Brief explanation of drawings]

FIG. 1 is a partial sectional view showing one embodiment of the pipe joint structure of this invention.

FIG. 2 is a partial sectional view showing the state of the pipe joint structure in FIG. 1 before connection.

FIG. 3 is a partial sectional view showing another pipe joint structure of this invention.

FIG. 4 is a partial cross-sectional view showing a conventional pipe joint structure.

[Explanation of symbols]

1: socket, 2: insertion port, 3: rubber ring, 4: socket, 4
A: Step part of 4, 4B: Protrusion of 4, 5: Insertion port, 6: First rubber ring, 7: Second rubber ring, 8: Interval, 9: Sealing material, 10:
Through hole, 11: Plug.

──────────────────────────────────────────────── ─── Continuation of front page (72) Creator Hiroshi Ishida 3-16-9 Uchikanda, Chiyoda-ku, Tokyo Within Honchu Tetsukan Co., Ltd. (72) Creator Toshiyuki Yonezu 3-16-9 Uchikanda, Chiyoda-ku, Tokyo Within Honchu Tetsukan Co., Ltd.

Claims (2)

[Scope of utility model registration request] 1. In a pipe joint structure comprising a socket inserted into a socket, a first rubber ring is inserted between the inner circumferential surface of the distal end of the socket and the outer circumferential surface of the socket; A pipe joint characterized in that a second rubber ring is inserted between the first rubber ring and a stepped portion formed at the center of the inner circumferential surface of the socket and spaced apart from the first rubber ring. structure. 2. The pipe joint structure according to claim 1, wherein a gap formed between the first rubber ring and the second rubber ring is filled with a sealing material.