US 6,629,707 B1Granted

Pipe jointing unit

AssigneeAisin Seiki Kabushiki Kaisha

InventorsNaoki Yamaguchi, Toshihiko Yamanaka, Yoshiaki Kanoh

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Abstract

A pipe jointing unit includes a cylindrical joint in which is accommodated a pipe, a ring-shaped seal member positioned in the joint, an elastic connecting member positioned in the joint and holding the pipe and the ring-shaped seal member in the joint, and a guide member detachably connected to the joint. The guide has an annular guide portion which is disposed circumferentially between the inner surface of the edge portion of the joint and the outer surface of the pipe. The pipe is thus restricted from swinging in the radial direction relatively against the joint and the reliability of the resistance force against pulling the pipe out of the connecting member by vehicle vibration, an increase of the internal pressure of the pipe and the like is improved.

Claims11

Dependent claims

A pipe jointing unit comprising:

a cylindrical joint having a plurality of generally radially extending holes formed adjacent an edge portion of the cylindrical joint;
a pipe having an outer surface from which extends a flange, said pipe being positioned in the joint;
a ring-shaped seal member disposed between an inner surface of the joint and an outer surface of the pipe;
an elastic connecting member that includes an annular portion and a plurality of leg portions extending axially from the annular portion, the annular portion being positioned between the joint and the pipe in such a manner that the ring-shaped seal member is fitted stably, each of the leg portions having a protrusion and a groove, the protrusion of each leg portion protruding generally radially outwardly and being fitted into one of the holes in the joint to connect the joint and the connecting member, the groove of each leg portion being formed on an inner surface of the leg portion and engaging the flange to connect the connecting member and the pipe;
a guide member having a guide portion disposed between an inner surface of the edge portion of the joint and the outer surface of the pipe so that at least a portion of an outer surface of the guide portion faces in a direction of the inner surface of the edge portion of the joint and at least a portion of the inner surface of the guide portion faces in a direction of the outer surface of the pipe;
and
wherein the guide portion of the guide member has an annular shape possessing an inner diameter substantially equal to an outer diameter of the pipe and an outer diameter substantially equal to an inner diameter of the edge portion of the joint.

4 more elements

A pipe jointing unit comprising;

a tubular joint in which is formed at least one through hole adjacent an edge portion of the tubular joint;
a pipe having an outer surface on which is located a flange, said pipe being positioned in the joint;
a ring-shaped seal member disposed between an inner surface of the joint and an outer surface of the pipe;
an elastic connecting member that includes an annular portion and at least one leg portion extending axially from the annular portion, the annular portion being positioned between the joint and the pipe, a portion of said at least one leg portion engaging the flange on the pipe to connect the connecting member and the pipe and a portion of said at least one leg portion engaging the at least one hole in the joint to connect the joint and the connecting member;
a guide member having a guide portion disposed between an inner surface of the edge portion of the joint and the outer surface of the pipe so that at least a portion of an outer surface of the guide portion faces in a direction of the inner surface of the edge portion of the joint and at least a portion of the inner surface of the guide portion faces in a direction of the outer surface of the pipe;
and
wherein the guide portion of the guide member is annular in shape and possesses an inner diameter substantially equal to an outer diameter of the pipe and an outer diameter substantially equal to an inner diameter of the edge portion of the tubular joint.

4 more elements

Dependencies are inferred from the claim text.