Pipe joint

Abstract

In order to enable even those without the knowledge or experience of a worker, supervisor, or the like to easily confirm the tightened state of pipes visually, by touch, or the like immediately afterpipe connection work or when time has elapsed after the connection has been completed, a pipe joint is provided with: a nipple (1) having an insertion part (1a) that is inserted into a pipe (B) and faces the inner surface (B1) of the pipe in the radial direction; a tightening member (2) that is provided so as to be movable in the axial direction with respect to the outer surface (B2)of the pipe into which the insertion part of the nipple has been inserted; and a display member (3) that is provided so as to be sandwiched between the nipple and the tightening member in the axial direction. The tightening member has a pressing part (2b) that is formed such that the outer surface of the pipe is pressed in the radial direction toward the insertion part in conjunction with movement toward the nipple, and the display member has a deformation part (3) that undergoes deformation in the axial direction or the radial direction in conjunction with the movement of the tightening member toward the nipple.

Description

technical field [0001] The present invention relates to a pipe joint used for piping connection of pipes made of hard materials or pipes or sleeves made of soft materials. Background technique [0002] In the past, as this kind of pipe joint, there is a connecting device for a conduit or a hose, which is formed between a connecting body having a hole through which the medium flowing through the conduit or hose and the opposite end surfaces of a union nut biting into the connecting body are connected. Between them, two independent display rings are provided as displays for reproducing or recognizing the assembled state (for example, refer to Patent Document 1). [0003] Two independent display rings are respectively installed on the connecting body and the union nut and are provided with a stop surface. Before the assembly is completed, a window is created in order to maintain the distance between the two stop surfaces extending in the circumferential direction, and this win...

AI Technical Summary

Problems solved by technology

[0009] In addition, there is a problem of poor ease of use, as it cannot be used without replacing the connecting body or union nut with a unit provided with an indicator ring with respect to the already installed connecting device for pipes or hoses.

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