JP2000186792A5

JP2000186792A5 - Flexible tube fittings

Info

Publication number: JP2000186792A5
Application number: JP1998363593A
Authority: JP
Filing date: 1998-12-22
Publication date: 2005-08-04
Anticipated expiration: 2018-12-22

Description

【０００１】
【発明の属する技術分野】
本発明はフレキシブルチューブ用継手に関し、特にガス配管などに使用されるコルゲイト管にて構成されたフレキシブルチューブのための、フレキシブルチューブ用継手に関する。 [0001]
[Technical field to which the invention belongs]
The present invention relates to a flexible tube joint , and more particularly to a flexible tube joint for a flexible tube composed of a corrugate pipe used for gas piping and the like.

そこで本発明は、このような問題点を解決して、継手にフレキシブルチューブを差し込むことで継手とチューブとを接合することができ、しかも継手とフレキシブルチューブとの抜け出し防止性、シール性、シール部の耐火性をも兼備できるようにすることを目的とする。 Therefore, the present invention solves such a problem and can join the joint and the tube by inserting the flexible tube into the joint, and further, the joint and the flexible tube can be prevented from coming off, the sealing property, and the sealing portion. The purpose is to make it possible to combine the fire resistance of.

【０００７】
【課題を解決するための手段】
この目的を達成するため本発明は、コルゲイト管にて構成されたフレキシブルチューブのための継手が、筒状本体と、先端部が筒状本体の内部に挿入される押輪とを具備し、フレキシブルチューブは、コルゲイト管が、押輪の端部から、この押輪と筒状本体との内部に向けて挿通可能とされ、前記押輪の内周には、この押輪の先端側に向かって拡径するテーパ面が形成され、押輪のテーパ面の内周側に環状のリテーナが配置され、このリテーナは、プレス成形加工品により構成されて、押輪のテーパ面に接触可能な外周部と、径方向の内向きに突出する突部とを有するとともに、拡径および縮径可能とされ、前記リテーナは、フレキシブルチューブが挿通されたときに、コルゲイト管の外周の山部により突部が押し拡げられることによってこの山部の通過を許容し、かつ、この山部を通過させることによって突部がコルゲイト管の外周の谷部に係り合うように変形可能とされ、筒状本体の内部に環状のシール材が設けられ、この環状のシール材は、その内周面によってコルゲイト管の山部の外周をシール可能であるとともに、少なくともその一部が耐火性を有する材料にて形成されているようにしたものである。 0007
[Means for solving problems]
In order to achieve this object, in the present invention, a joint for a flexible tube made of a corrugate tube includes a tubular body and a push ring whose tip is inserted into the tubular body, and the flexible tube. Is a corrugate tube that can be inserted from the end of the push ring toward the inside of the push ring and the tubular body, and the inner circumference of the push ring has a tapered surface that expands in diameter toward the tip end side of the push ring. Is formed, and an annular retainer is arranged on the inner peripheral side of the tapered surface of the push ring. The retainer is composed of a press-molded product and has an outer peripheral portion that can contact the tapered surface of the push ring and an inward direction in the radial direction. It has a protrusion that protrudes into the pipe, and can be expanded and reduced in diameter. When the flexible tube is inserted, the retainer has a protrusion that is expanded by the peak on the outer circumference of the corrugate tube. By allowing the passage of the part and passing through this mountain part, the protrusion can be deformed so as to engage with the valley part of the outer circumference of the corrugate pipe, and an annular sealing material is provided inside the tubular body. The annular sealing material is capable of sealing the outer periphery of the mountain portion of the corrugate pipe by its inner peripheral surface, and at least a part thereof is made of a fire resistant material.

このような構成であると、フレキシブルチューブを継手の内部に挿入することで、これらフレキシブルチューブと継手とがシール状態で互いに確実に接合されることになる。 With such a configuration, by inserting the flexible tube into the joint, the flexible tube and the joint are surely joined to each other in a sealed state.

【００３１】
【発明の効果】
以上のように本発明によると、フレキシブルチューブを継手の内部に挿入することで、部材のねじ込み作業などの他の操作はいっさい必要とせずに、これらフレキシブルチューブと継手とをシール状態で互いに確実に接合することができる。また、リテーナの外周部が押輪の内周のテーパ面に押圧され、その反力により突部がコルゲイト管の谷部に強く係り合うことになるため、継手からのフレキシブルチューブの抜け出しを阻止できる。リテーナは、プレス成形加工品により構成されるため、安価に製造することができる。さらに、コルゲイト管と継手とはシール材によってシールされ、しかもシール材の少なくとも一部が耐火性を有する材料にて形成されているため、火災などの発生時においても、この耐火性を有する材料にて形成された部分は焼失せず、したがって所要のシール性を維持することができる。 0031
【Effect of the invention】
As described above, according to the present invention, by inserting the flexible tube into the joint, the flexible tube and the joint can be securely sealed from each other without requiring any other operation such as screwing of the member. Can be joined. Further, since the outer peripheral portion of the retainer is pressed against the tapered surface on the inner circumference of the push ring and the protrusion is strongly engaged with the valley portion of the corrugate pipe due to the reaction force, it is possible to prevent the flexible tube from coming out from the joint. Since the retainer is composed of a press-molded product, it can be manufactured at low cost. Furthermore, since the corrugate pipe and the joint are sealed with a sealing material, and at least a part of the sealing material is made of a fire-resistant material, the material having this fire resistance even in the event of a fire or the like. The formed portion does not burn out and therefore the required sealing property can be maintained.

【図１】
本発明の実施の形態のフレキシブルチューブ用継手の構成を示す断面図である。 FIG. 1
It is sectional drawing which shows the structure of the joint for flexible tubes of embodiment of this invention.

【図８】
本発明の他の実施の形態のフレキシブルチューブ用継手の構成を示す断面図である。 FIG. 8
It is sectional drawing which shows the structure of the joint for flexible tubes of another Embodiment of this invention.

Claims

A joint for a flexible tube composed of a corrugate tube, comprising a cylindrical main body, and a push ring whose tip is inserted into the cylindrical main body,
The flexible tube allows the corgate tube to be inserted from the end of the press ring toward the inside of the press ring and the cylindrical body,
On the inner periphery of the press wheel, a tapered surface is formed that expands toward the tip side of the press wheel,
An annular retainer is arranged on the inner peripheral side of the tapered surface of the press ring,
This retainer is constituted by a press-molded product, and has an outer peripheral part that can contact the tapered surface of the press wheel and a protruding part that protrudes inward in the radial direction, and can be expanded and reduced in diameter.
When the flexible tube is inserted, the retainer allows the protrusion to pass by the protrusion on the outer periphery of the corrugate tube, and allows the protrusion to pass through the protrusion. Is deformable to engage with the valley on the outer periphery of the corgate pipe,
An annular sealing material is provided inside the cylindrical body,
The annular sealing member, together with its inner possible seal the outer periphery of the crest of Korugeito pipe by circumferential face, a flexible tube, wherein at least a portion of which is formed of a material having fire resistance Fittings .

The outer peripheral portion of the retainer is formed in an oblique direction along the tapered surface of the press wheel, and the protrusion of the retainer is formed in an inclined shape that protrudes toward the distal end side toward the inner peripheral side. Flexible tube fittings .

The flexible tube joint according to claim 1 or 2, wherein the retainer has a cut in an axial direction from the protrusion side toward the outer peripheral surface side.

The cylindrical main body and a push ring whose tip is inserted into the cylindrical main body are provided, and the corrugate tube constituting the flexible tube is directed from the end of the push ring toward the inside of the push ring and the cylindrical main body. And a retainer used for a joint formed with a tapered surface formed on the inner periphery of the pusher wheel and having a diameter that increases toward the tip side of the pusher wheel,
It is composed of an annular press-molded product arranged on the inner peripheral side of the tapered surface of the press wheel, and has an outer peripheral portion that can contact the tapered surface of the press wheel, and a protrusion that protrudes inward in the radial direction, The diameter can be expanded and reduced,
When the flexible tube is inserted, the protrusion is allowed to pass by the protrusion on the outer periphery of the corrugate tube, and the protrusion is allowed to pass through the protrusion. It can be deformed to engage with the valley on the outer periphery,
A retainer for a joint for flexible tubes .

5. The flexible tube for a flexible tube according to claim 4, wherein the outer peripheral portion is formed in an oblique direction along the tapered surface of the push ring, and the protrusion is formed in an inclined shape that protrudes toward the distal end side toward the inner peripheral side . Retainer for fittings .

The retainer for a flexible tube joint according to claim 4 or 5 , wherein the retainer has a notch in an axial direction from the protruding portion side toward the outer peripheral surface side.