Patent ID: 7185922

Claim:
An anti-rotation structure, comprising: a connector, a pipe inserted in the connector, and an anti-rotation device to restrain relative rotational movement of the pipe and the connector, the connector having sealing means, retainer means and a connector housing provided with a connecting portion for a mating member in communication with the pipe on one axial end of the connector housing, the pipe including an inserting side portion of straight tubular shape inserted in and connected to the connector housing through an opening of the opposite axial end of the connector housing, the inserting side portion of the pipe being connected to the connector housing by engagement of an annular engagement projection formed on the inserting side portion with the retainer means, the sealing means forming a seal between the inserting side portion and the connector housing, wherein the anti-rotation device comprises: a pipe connecting portion connected to the inserting side portion of the pipe in anti-rotating relation, and a connector connecting portion connected to the connector in anti-rotating relation, the connector connecting portion being constructed on or constructed integrally with the pipe connecting portion.