Pipe fitting and hose

Abstract

A small pipe fitting in which a male body and a female body cannot be separated after they are coupled once. The pipe fitting (10) consists of a male body (12), and a female body (30) into which the male body (12) is inserted. The male body (12) has a smaller outside diameter on the distal end side and includes, sequentially from the distal end, a third cylindrical portion (14), an outer tapered portion (16), a second cylindrical portion (18), an annular groove (20) locked with a resilient stop ring body (42), and a first cylindrical portion (22). The female body (30) has a smaller inside diameter on the rear side and includes, sequentially from the distal end and from the inlet side of an opening (32), a first inner wall face (34), a two-step groove (40) consisting of a locking groove (36) and a containing groove (38) and containing the resilient stop ring body (42), a second inner wall face (44), an inner tapered portion (46), and a third inner wall face (48). The resilient stop ring body (42) has a gap (43) formed by cutting a part of an annular member, wherein the outer circumferential diameter when the resilient stop ring body (42) is deformed resiliently to allow the end faces (42A, 42B) of the gap (43) to touch each other is set smaller than the inside diameter of the first inner wall face (34).

Description

technical field [0001] The present invention relates to a pipe joint having a cylindrical male body and a cylindrical female body into which the male body is inserted, and a male body having the pipe joint, which are used for connecting pipes of motor vehicles, construction machinery, and working machines, etc. and a hose of at least one of the concave bodies. Background technique [0002] Conventionally, when assembling one pipe and another pipe, a pipe joint was used for connection. [0003] For example, if Figure 27 As shown, the pipe joint 100 is composed of a cylindrical male body 102 and a cylindrical female body 110 having an opening 112 into which the male body 102 is inserted. An annular groove 104 for locking the elastic annular body 120 is formed on the peripheral surface of the convex body 102 . An annular groove 114 is formed on the inner side of the opening 112 of the concave body 110 , and an O-ring 116 is provided in the groove 114 . An annular small-diam...

AI Technical Summary

Problems solved by technology

[0009] In addition, in the separable pipe joint 100, the outer diameter of the pipe joint increases due to the annular cover 124, and the number of parts increases, which increases the cost.

In addition, there is an excess pushing amount of the convex body 102 in the concave body 110 for separation work, and there is also a disadvantage that the overall length of the pipe joint 100 becomes longer.

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