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Connection device for a plastic tube

A connection device, plastic pipe technology, applied in the direction of hose connection device, pipe connection arrangement, pipe/pipe joint/pipe fitting, etc., can solve the problem of damage to the elastic function of the support ring, installation cost, and can no longer ensure the holding force of the claw. and other problems, to achieve the effect of reducing the tendency of clamping, simple installation, and eliminating wrong installation.

Active Publication Date: 2015-01-14
KE KELIT KUNSTSTOFFWERK GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this structure has some disadvantages in terms of its functionality
As a result, not only is the installation time consuming, but there is also the risk that, when the plastic tube is slid onto the connection piece, the elastic support ring is pressed out of its receiving groove into the gap between the connection piece and the sleeve and along the connection The joint moves, which impairs the elastic function of the support ring, so that the defined pressing force for the retaining jaws arranged against the inside of the pipe can no longer be ensured

Method used

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  • Connection device for a plastic tube
  • Connection device for a plastic tube
  • Connection device for a plastic tube

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0016] according to figure 1 , the connecting device for the plastic pipe 1 shown in dotted lines has a connection nipple 2 for receiving the plastic pipe 1 with a stop flange 3 against which the sleeve 4 surrounding the plastic pipe 1 acts in a shear-resistant manner. on the retaining flange.

[0017] To clamp the plastic pipe 1 between the connecting piece 2 and the sleeve 4 , an expansion ring 5 is supported on the connecting piece 2 , which cooperates with the outer cone 6 of the connecting piece 2 . The device is designed in such a way that the expansion ring 5 , which is formed as a retaining claw 7 projecting radially towards the outside of the plastic tube 1 , is elastically supported on the stop 11 of the connecting piece 2 via the elastic spring washer 8 and the support ring 9 . The expansion ring 5 , the spring washer 8 and the support ring 9 form a structural unit consisting of several individual parts combined in a shear-resistant manner.

[0018] If the plastic...

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Abstract

The invention relates to a connection device for a plastic tube (1), comprising a connection nipple (2) that receives the plastic tube (1) and forms an outer cone (6) widening towards the free nipple end. An expansion ring (5) that can be slid over the outer cone (6) and comprises outwardly protruding retaining claws (7) is provided between the outer cone and an axial abutment (11), said expansion ring being supported on the axial abutment (11) of the connection nipple (2) by means of a supporting ring (9). Said device also comprises a sleeve (4) surrounding the plastic tube (1) that has been pushed onto the connection nipple (3) and gripping in a traction-resistant manner onto an abutment flange (3) of the connection nipple. In order to create advantageous assembly conditions, a rubber-elastic spring ring (8) is arranged between the expansion ring (5) and the supporting ring (9). The expansion ring (5), the supporting ring (10) and the spring ring (8) are interconnected in a shear-resistant manner.

Description

technical field [0001] The invention relates to a connection device for plastic pipes, with a connection fitting for receiving the plastic pipe and a sleeve which engages in a tension-resistant manner on a stop flange of the connection fitting and surrounds the plastic pipe fitted over the connection fitting. barrel, wherein the connection joint forms an outer cone expanding towards the free joint end, and an expansion ring slidably fitted on the outer cone is arranged between the outer cone and the axial stop, the expansion ring has an outwardly convex The extended holding claw is supported by the support ring on the axial stop of the connection joint. Background technique [0002] In this type of known connecting device (AT410706B), the plastic pipe is put on the connecting joint, and the connecting joint supports an expansion ring with outwardly protruding retaining claws in the region of the outer cone, so that when sliding the sleeve, the plastic The tube slides throug...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16L33/00
CPCF16L47/12F16L37/0925F16L37/0926
Inventor E.拉奇曼
Owner KE KELIT KUNSTSTOFFWERK GMBH
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