JPS61418A - Air-tight connection mechanism of tubular body - Google Patents

Abstract

PURPOSE:To simply and certainly connect a tubular body in an air-tight state, by contacting the tubular body with the smooth connection surface of other member under pressure in an air-tight state by a ring shaped projection and sealing both of them. CONSTITUTION:Rigid external restricting members 1, each of which receives the outer end surface of a flexible tubular body 6 and connects the same, are threaded with a center shaft 2 so as to be provided at both ends of said center shaft 2 in an opposed state and the connection of the external restricting members 1, 1 to the outer surfaces of the tubular bodies 6 is performed at the receiving ports 11 formed to said members 1, 1 while internal insert members 9 are inserted in the tubular body 6 thus inserted in the receiving ports 11 in a plug form. A plurality of ring shaped projections 9a are provided to the outer surface of said internal insert members 9 in a stepped state and, by contacting the tubular body 6 with the smooth surfaces of the receiving ports 11 under pressure by said ring shaped projections 9a, the porous structure of the tubular body 6 is collapsed under pressure to be brought to an air-tight state and both contact parts are sealed under pressure.

Description

DETAILED DESCRIPTION OF THE INVENTION Object of the Invention The present invention relates to an air-tight joining mechanism for tubular bodies, and is capable of easily and easily bonding synthetic resin tubular bodies having a continuous porous structure without using adhesives or melt bonding methods. The purpose is to provide a mechanism that can be joined in an accurate airtight state.

Industrial applications Connection mechanism of tubular body.

Conventional technology The joining of tubular bodies has been practiced in various ways for a long time in various devices, etc., but when joining synthetic resin pipes having a continuous porous structure, it is necessary to bond them with an adhesive or to Alternatively, it should be joined by welding.

Problems to be Solved by the Invention Naturally, conventional methods such as those described above generally require a considerable number of man-hours, regardless of whether they are adhesive or welded. A good bond cannot be obtained. Furthermore, once joined, it is not easy to remove 2, and removal often damages the tube body and other parts, making it difficult to reuse. For this reason, when the above-mentioned continuous porous tissue tubular body is used as a cart IJ type r passing mechanism, etc., there is a disadvantage that the entire KF' passing mechanism must be disposed of if the function of a part of the tubular body deteriorates or is damaged. be.

``Structure of the Invention-1 Means for Solving the Problems The present invention was developed through research to eliminate the disadvantages of the conventional products as described above, and is designed to accept and join the outer surface of the end of a tubular body. 1. A rigid inner insertion member inserted into the external restraint body and the tubular body and having a through hole for passing the fluid to be treated into the tubular body or discharging the fluid from the tubular body to the outside. at least one continuous annular protrusion is formed on the joining surface of the tubular body of either the external restraint part body or the internal insertion part body, and the annular protrusion allows the other part to be This is an airtight joint mechanism for a tubular body, characterized in that the tubular body is hermetically sealed to a smooth joint surface of the body.

Function: The end of the tubular body is fixed in an airtight manner by inserting the inner insertion member into the tubular body, which is inserted into the external restraint member.
The tubular body can be sealed and the fluid to be treated can be passed through the through hole in the internal insert for filtration or other treatment. The use of a continuous porous filter structure as the tubular body is effective for the above-mentioned filtration process, and forms a mechanism with a large permeability area. Such a continuous porous tubular body is attached by being pressed in an airtight manner by the annular protrusion on either the external restraint body or the internal insertion body, and the fluid to be treated does not leak from the anchoring part. Furthermore, since the other joint is smooth, it is easy to attach and detach the tubular body and the internal insertion part body.

EXAMPLE To explain the pot-like embodiment of the present invention as shown in the attached drawings, as shown in the attached drawings, the rigid external restraint body 1 which receives and joins the outer end surface of the flexible tubular body 6 is It is screwed onto the central shaft 2 and is provided oppositely to both ends of the central shaft 20, and is joined to the outer surface of the tubular body 6 as described above in the receiving holes 11 formed in these external restraint bodies 1, 1. The internal insertion part body 9 is inserted like a plug into the inside of the tubular body 6 inserted into the receiving hole 11, and the fluid to be treated is passed through the internal insertion part body 9 into the tubular body. or a through hole 19 for flowing out from inside the tubular body 6 to the outside.
is formed. Further, the outer surface of the internal insertion member 9 as described above forms a joint surface with the inner surface of the tubular body 6, and the outer surface of the internal insertion member 9 has a plurality of continuous annular protrusions 9a. These annular protrusions 9a press the tubular body 6 against the smooth surface of the receiving hole 11, thereby crushing the porous structure and creating an airtight pressure/contact seal.

The annular protrusion 9a as described above may be formed on the inner surface of the receiving hole 11 of the external restraint body 1 as shown in FIG. Good too. That is, the annular protrusion 1 formed on the inner surface of the receiving hole 11
With a length of 1 m, the same effect as described above can be obtained.

In the illustrated example, the tubular body 6 as described above is wound in a spiral around the central shaft 2, and the ends are accurately fixed by the airtight joint mechanism of the present invention as described above. Even if the object is formed in such a wound state, it will not come out and can be stably attached. As mentioned above, the spirally wound tubular body can easily obtain the desired r overarea with a small number of materials (number of pieces) K, and the processing or man-hours for installing the tubular body can be greatly reduced. can be reduced to To comment, it is clear that in the illustrated case, the four tubular bodies 6 provide a filtration area equivalent to several tens of conventional tubular bodies arranged parallel to the central axis.

Note that if the internal insertion part body 9 is not provided with the through hole 19, one end of the tubular body can be attached to the external restraint part body 1 in a sealed state, that is, as shown in FIGS. 1 and 2 above. In the one on the right side of the figure, the tubular body is attached to the external restraining member 1a at the end in such a sealed state. On the inlet side, a connection part weight 2 as shown in FIG. 1 or 2 can be attached to the external restraint body 1 to connect it to a common source of fluid to be treated.

``Effects of the Invention'' It is clear that the device according to the present invention as described above can join the ends of flexible tubular bodies in an airtight manner. A stable and accurate airtight joint seal can be obtained without using welding techniques. In other words, the fact that filter materials can be joined in this way not only makes assembly easier, but also makes it easy to remove and replace only the defective part in the event that a part is damaged or blocked. This means that it can be used more economically than conventional adhesive or welding techniques, which require replacing the entire processing mechanism. This is an invention with great industrial effects.

[Brief explanation of the drawing]

The drawings show embodiments of the present invention, and FIG. 1 is a partially cutaway side view of one example of a filtration mechanism that utilizes the joint mechanism of the present invention, and FIG. 2 is another embodiment of the joint portion. It is a sectional view showing an example, and end views from both end faces are also shown. In these drawings, 1 is an external restraint body, 2 is a central axis, 6 is a tubular body, 9 is an internal insertion body, 9a is an annular projection thereof, 11 is a receiving hole of the external restraint body, and 11a is a receiving hole of the external restraint body. It is an annular protrusion formed on its inner surface. Patent Applicant: Japan Gore-Tex Co., Ltd. Inventor: Sada Hamasaki Amendment to Procedural Procedures (Kyo I) Showa ia, 8. 9 days old

Claims (1)

[Scope of Claims] 1. A rigid external restraint member that receives and joins the outer surface of the end of the tubular body, and a rigid external restraining member that is inserted into the interior of the tubular body and that allows the fluid to be processed to pass through the tubular body or into the tubular body. It has a rigid internal insertion part body with a through hole for flowing out from the outside, and at least one is attached to the joint surface of the tubular body of either the external restraint part body or the internal insertion part body. forming a continuous annular protrusion,
An airtight joining mechanism for tubular bodies, characterized in that the annular protrusion allows the tubular body to be hermetically sealed against a smooth joint surface of the other member. 2. The tubular body according to claim 1, wherein the tubular body has a continuous porous filter structure, and the filter structure forms an airtight seal by pressure contact with the annular protrusion. Airtight joint mechanism. 3. Claim 1, wherein the tubular body is made of continuous porous polytetrafluoroethylene, and both the external restraint member and the internal insertion member are made of solid polytetrafluoroethylene. Airtight joint mechanism of the described tubular body.