A. Raymond & Cie

Daniel Martin-Cocher

Erminio Moretti

Albert Raymond

Hans-Jurgen Lesser

Michael Trede

Jean-Martin Henlin

A removable plug-in connection for high-pressure lines, in particular brake lines in the construction of motor vehicles. The connection includes a cylindrical receiving housing () with a central receiving chamber (), in addition to a tubular plug-in part, which is equipped with a peripheral retaining rib. An insertion side of the receiving housing () has an enlarged receiving chamber () in which several radially guided locking elements () can be retained, the elements being clamped in a direction of the interior by a retaining ring (). The locking elements () include two half-shells () that include retainer wedges () that point inwards, engaging behind the retaining rib () in a positive fit once the plug-in part () has been inserted. Each half-shell () has a projecting centering pin on one end face, the pin constituting an extension of the internal wall and engaging in a corresponding cavity on the opposing end face when the two half-shells () are assembled. Once the half-shells have been retained (), the front edge () of the wall () that surrounds the enlarged receiving chamber (') is bent inwards at an oblique angle to the axis of the receiving housing () until the retaining rib can pass through unhindered and the half-shells () are outwardly displaced when the plug-in part is inserted.

Removable plug-in connection for high-pressure lines

The detachable plug coupling operative to connect fluid lines, particularly fuel lines of motor vehicles. The plug coupling includes a tubular insertion part with an encircling retaining rib and a coupling housing having a cylindrical accommodating space for the insertion part. The plug coupling also has an enlarged head part with a separate retaining element, having elastically opening retaining edges. The retaining edges are radially directed into the accommodating space and engage behind the retaining rib after the insertion part has been pushed in. In order to ensure that the retaining rib is correctly snapped in behind the retaining edges after the insertion part has been inserted, an additional locking element is provided, which is guided in a transversally displaceable manner on the housing head between an opening position and a closing position.

Detachable plug coupling provided with an additional locking element

A separable rapid-action coupling serves for connecting fluid lines includes a tubular plug-in part with a circumferential holding rib, a coupling housing with a cylindrical receptacle cavity for the plug-in part and a separate holding element. The holding element has elastically expandable holding edges that are radially directed into the receptacle cavity. The holding edges engage behind the holding rib after insertion of the plug-in part. A safety clip with a second locking mechanism is situated in front of the plug-in opening of the housing in case the snap-in mechanism of the holding element fails. The safety clip includes a frame that fits on the end face of the coupling housing and two elastically expandable clips that engage corresponding projections on the coupling housing. The safety clip has snap-in fingers that can be inserted into the receptacle cavity. The front ends of the snap-in fingers are supported on the holding rib of the fully engaged plug-in part while snap-in tabs that protrude outward from the snap-in fingers are directed toward the rear simultaneously engage behind contact edges that inwardly protrude from the housing wall. This safety clip can be inexpensively manufactured from a plastic material and easily preassembled on the coupling housing for the intended purpose. In addition, a centrally arranged support ring and the corresponding arrangement of the snap-in fingers on the support ring and on the frame make it possible to design the safety clip in such a way that it is pulled into the receptacle cavity simultaneously with the insertion of the plug-in part and the snap-in tabs are automatically moved into their locking position.

Separable rapid-action coupling with safety lock

The releasable plug coupling is used for connecting fluid lines, particularly, fuel lines of motor vehicles. The plug coupling comprises a tubular plug-in part ( ) with an annular retaining lip ( ) as well as a coupling housing ( ) with a cylindrical receiving space ( ) for inserting the plug-in part ( ) and a separate retaining element ( ) with elastic retaining edges ( ) that project radially into the receiving space ( ) and that grip behind the retaining lip ( ) after the plug-in part ( ) is inserted into the receiving space ( ). The retaining edges ( ) are attached to support bodies ( ) that are connected at their ends by elastic connecting pieces ( ) that form a V to pressure plates ( ). These plates extend outwards through corresponding openings ( ) in the housing wall ( ) and are pressed together from the outside for releasing the coupling. On the head part ( ) of the coupling housing ( ) there is a protective sleeve ( ) that can move axially and that covers the pressure plates ( ) when the plug-in part ( ) is inserted in order to prevent unintentional release of the coupling. This protective sleeve ( ) is integrally connected by a radial connection ring ( ) to an inner guidance sleeve ( ) that, in turn, is connected at their free inner edge ( ) by two opposing connecting pieces ( ) to a ring ( ). This has the effect that the retaining lip ( ) pushes against the ring ( ) when the plug-in part ( ) is inserted and thus, the protective sleeve ( ) is automatically moved by the retaining ring ( ) over the pressure plate ( ). Between the connection ring ( ) and the front wall ( ) of the housing head ( ), there is a spiral spring ( ) that keeps the protective sleeve ( ) ready for movement.

Releasable plug coupling with protective sleeve

A detachable coupling includes a housing having wall, an end that has an inner wall, and a receiving space that has an opening in the end. The opening and the receiving space receives a tubular insertion part that has a retaining rib. An indicating part is removably mounted to the end of the receiving housing and includes a support ring and a lever. The lever has a free end and a inner end and is pivotally mounted to the support ring and extends into the receiving space. A support projection is positioned on the inner end of the lever and contacts the inner wall. Insertion of the tubular insertion part causes the retaining rib to contact the free end of the lever and results in the pivoting of the lever. Pivoting of the lever disengages the support projection from the inner wall and dismounts the indicating part from the housing.

Detachable fast-coupling having an automatic assembly indicator

A plug connection with an automatically actuated outlet shut-off includes a cylindrical receptacle housing with an opening for inserting a tubular plug-in part that is provided with a circumferential holding rib which can be engaged in a locking element arranged in the inserting region of the receptacle housing. Ring seals for sealing the annular gap between the inner wall of the receptacle housing and the inserted plug-in part are also arranged in the receptacle housing. A valve body is provided in the flow-through chamber of the receptacle housing, wherein the valve body automatically seals the flow-through chamber and is pressed into the open position away from the end face of the plug-in part against the force of a coil spring when the plug-in part is inserted. The valve body is in the form of a sleeve that is closed by an end wall on its end that faces away from the inserting opening and penetrated by a radial rib. Four axially parallel ribs that are uniformly distributed over the circumference are arranged on the rear side of the end wall, such that the ribs are guided in a longitudinally displaceable fashion in corresponding longitudinal grooves in the inner wall of the receptacle housing.

Plug connection with outlet shut-off

The invention relates to a detachable plug-and-socket connector for high pressure lines, particularly for brake lines in the manufacture of motor vehicles, where the plug-and-socket connector must have an especially high retaining force. The connector includes a plug-in part that has an annular retaining flange on its insertion side and is provided with a circular recess into which the end of a brake line tube can be pressed by deformable expansion of the tube wall and that the retaining spring is provided with a simple central clamping ring which can be slipped over the tubular connecting piece of the plug-in part immediately next to the retaining flange.

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Grenoble, France

Daniel Martin-Cocher