US 2017/0248263 A1Published application

Quick connector

AssigneeSumitomo Riko Company Limited

InventorsHideo TERADA, Ryousuke KANEGAE, Kazuki HATANAKA

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Abstract

A quick connector includes paired first legs having a first push-in inhibiting protrusion, and paired second legs having a second push-in inhibiting protrusion. Although the first push-in inhibiting protrusions inhibit the push-in movements of a retainer in a state before a pipe is inserted, they do not inhibit the push-in movements of the retainer in such another state as the pipe is located at a midway position. The second push-in inhibiting protrusions inhibit the push-in movements of the retainer in the other state where the pipe is located at the midway position.

Claims7

Dependent claims

A quick connector comprising:

a connector body into which a pipe having an annular boss is insertable;
and
a retainer moving from an initial position to a confirmation position with respect to the connector body by a push-in operation in a direction that intersects with an axial direction of the connector body in such a state as the pipe is inserted into the connector body to a regular position in the axial direction of the connector body, the retainer preventing the pipe from coming off by axially locking to the annular boss at the confirmation position;
the retainer including:
a base;
paired first legs disposed at opposite ends of the base, and being capable of opening expansively;
and
paired second legs disposed at the opposite ends of the base, disposed independently of the paired first legs, and exhibiting a smaller expansive opening magnitude than that of the paired first legs;
the paired first legs provided with a first push-in inhibiting protrusion disposed on a leading-end side of the paired first legs, and inhibiting the retainer from moving from the initial position to the confirmation position;
the paired second legs provided with a second push-in inhibiting protrusion disposed on a leading-end side of the paired second legs, and inhibiting the retainer from moving from the initial position to the confirmation position;
the first push-in inhibiting protrusions inhibiting the retainer from moving from the initial position to the confirmation position by being locked to the connector body in such another state as the retainer is located at the initial position and the pipe is not inserted into the connector body;
the first push-in inhibiting protrusions canceling the locking to the connector body by the paired first legs that open expansively accompanied by coming into contact with the annular boss in such still another state as the retainer is located at the initial position and the pipe is located at a midway position that is located on a more axially frontal side than is the regular position;
and
the second push-in inhibiting protrusions inhibiting the retainer from moving from the initial position to the confirmation position by coming into contact with the annular boss of the pipe in a direction of pushing in the retainer in the still other state where the retainer is located at the initial position and the pipe is located at the midway position.

11 more elements

Dependencies are inferred from the claim text.

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Abstract

A quick connector comprising:

a connector body into which a pipe having an annular boss is insertable;
and
a retainer moving from an initial position to a confirmation position with respect to the connector body by a push-in operation in a direction that intersects with an axial direction of the connector body in such a state as the pipe is inserted into the connector body to a regular position in the axial direction of the connector body, the retainer preventing the pipe from coming off by axially locking to the annular boss at the confirmation position;
the retainer including:
a base;
paired first legs disposed at opposite ends of the base, and being capable of opening expansively;
and
paired second legs disposed at the opposite ends of the base, disposed independently of the paired first legs, and exhibiting a smaller expansive opening magnitude than that of the paired first legs;
the paired first legs provided with a first push-in inhibiting protrusion disposed on a leading-end side of the paired first legs, and inhibiting the retainer from moving from the initial position to the confirmation position;
the paired second legs provided with a second push-in inhibiting protrusion disposed on a leading-end side of the paired second legs, and inhibiting the retainer from moving from the initial position to the confirmation position;
the first push-in inhibiting protrusions inhibiting the retainer from moving from the initial position to the confirmation position by being locked to the connector body in such another state as the retainer is located at the initial position and the pipe is not inserted into the connector body;
the first push-in inhibiting protrusions canceling the locking to the connector body by the paired first legs that open expansively accompanied by coming into contact with the annular boss in such still another state as the retainer is located at the initial position and the pipe is located at a midway position that is located on a more axially frontal side than is the regular position;
and
the second push-in inhibiting protrusions inhibiting the retainer from moving from the initial position to the confirmation position by coming into contact with the annular boss of the pipe in a direction of pushing in the retainer in the still other state where the retainer is located at the initial position and the pipe is located at the midway position.

11 more elements