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Pipe joint

A technology of pipe joints and chucks, applied in the field of pipe joints

Inactive Publication Date: 2006-05-24
SMC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, an excessive load may be exerted on the radially expanded portion of the pipe 1

Method used

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Examples

Experimental program
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Effect test

Embodiment Construction

[0028] refer to figure 1 , reference numeral 10 represents the pipe joint of the embodiment of the present invention.

[0029] The pipe joint 10 includes: a substantially cylindrical joint body 14 having a through hole 12 as a fluid passage linearly formed in the axial direction; and a nut member 20 having an insertion hole 18 of circular section, For inserting a pipe (pipe member) 16 , the nut member 20 is mounted on the joint body 14 so as to hold the pipe 16 . Both the joint body 14 and the nut member 20 are made of resin material.

[0030] Such as figure 2 As shown, the joint body 14 is provided with: a first externally threaded portion (first threaded portion) 22a having threads having a substantially trapezoidal cross-section formed on an outer peripheral surface near one end; The externally threaded portion 22b, the second externally threaded portion 22b has a thread having a zigzag cross section formed on the outer peripheral surface of the other end. An annular ...

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PUM

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Abstract

A pipe joint, comprising: a nut part (20), which connects a pipe (16) to a joint body (14); a collet part (36), which fixes the pipe ( 16), the fixing claw (40) is used to press radially inwardly through the pressing portion (56) of the nut member (20) so as to bite into the outer peripheral surface of the radially expanding portion (16a) of the pipe (16); and the annular protrusion (60), the annular protrusion (60) abuts against the annular step (24) of the joint body (14), and the annular protrusion (60) controls the threaded connection of the nut part (20) on the joint body (14) quantity.

Description

technical field [0001] The invention relates to a pipe connection which enables a liquid-tight or gas-tight connection of a pipe part to a fluid handling device. Background technique [0002] When producing semiconductor chips, pipe joints made of resins such as fluororesins are still used today in production lines and the like where pure water washing solutions or other chemical solutions or the like are used for cleaning, corrosion and chemical protection. [0003] One such pipe joint is disclosed, for example, in Japanese Laid-Open Patent Application No. 11-182751. That is, if Figure 9 As shown, the radially expanded end 2 of the pipe 1 passes through the insertion hole 4 of the nut member 3 and is inserted into the annular groove 6 of the main joint body 5 . The internally threaded portion 8 on the inner peripheral surface of the nut member 3 is threadably engaged with the externally threaded portion 7 on the outer peripheral surface of the main joint body 5 . Therefo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16L47/04F16L19/02F16L19/04F16L19/06F16L19/065
CPCF16L19/0283F16L2201/10F16L47/041F16L19/06
Inventor 深野喜弘内野正
Owner SMC CORP
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