Device for coupling rigid male endpiece to flexible female pipe, and production method therefor

Abstract

The invention relates to a fluid-transfer coupling device designed to couple a rigid male endpiece (30) to a flexible female pipe (20) and to the production method therefor. The device comprises: a sleeve (10) for gripping around the pipe and locking the endpiece, the sleeve having a radially inner part (18) surrounding an annular sealing lining (50) mounted in abutment on the endpiece; and a metal socket (40) having a tubular portion (41) gripped by the pipe and ending in a collar formed by a radial step (43) which extends in an axial end (44) and has a radial height, the axial end being mounted inside and in contact with the radially inner part and forming the base of a groove receiving the lining, the device comprising means for fitting the sleeve to the collar and comprising a continuous peripheral projection (13) formed in one piece with the sleeve. According to the invention the projection projects radially in abutment against the step over most of the radial height.

Description

technical field [0001] The present invention relates to a fluid transfer coupling device suitable for coupling a rigid male end piece to a flexible female conduit, for example made of an elastomer, and a method for producing such a device . The invention is particularly applicable to the automotive sector including recreational vehicles moved by internal combustion engines, utility vehicles, heavy vehicles, construction (e.g. civil engineering) vehicles or even agricultural type vehicles and the stationary sector using similar internal combustion engines (e.g. Quick couplings in generators, compressors, pumps). For both types of applications, the device according to the invention can in particular be equipped with a pollution control circuit, a cooling circuit or advantageously an air supply circuit. Background technique [0002] In general, in fluid transfer circuits for motor vehicles, it is known to sealingly connect flexible tubing to rigid locking male end pieces usin...

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Problems solved by technology

[0003] It is also known to produce the entire connector body from formed metallic material and to fasten the pipe to it by local deformation of the cylindrical socket, which has the disadvantage of requiring a complex forming process of the body, resulting in High processing and high production costs and lack of adaptability of the device (in the case of insertion into a closed groove of a sealing bush which must not be provided with ribs)

[0005] A major drawback of this coupling device is the complex and bulky construction of the sleeve, and the fact that the sleeve passes through said radial extension and said radial portion of the sleeve respectively behind and in front of the ferrule of the hub The assembly to this socket is performed

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