Abstract: 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 (1) with a central receiving chamber (2), in addition to a tubular plug-in part, which is equipped with a peripheral retaining rib. An insertion side of the receiving housing (1) has an enlarged receiving chamber (2) in which several radially guided locking elements (5) can be retained, the elements being clamped in a direction of the interior by a retaining ring (14). The locking elements (5) include two half-shells (8) that include retainer wedges (18) that point inwards, engaging behind the retaining rib (4) in a positive fit once the plug-in part (3) has been inserted. Each half-shell (8) 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 (8) are assembled.

Abstract: The invention relates to a fluid line coupling and comprises a receiving part (1) as well as a fixing assembly (15) for the fixation of an insertion part (10). The fixing assembly has a retaining part (17) which is, in a steady state, located in the receiving space (4) of the receiving part (1) and is equipped with pivotable support wings (22, 23) engaging behind the existing front coil (14) which is located on the insertion part (10). Said fixing assembly also features a locking element (16) which is movably connected to the retaining part (17) and has, along with the receiving part (1), elements of a blocking assembly which impede the movement of the locking element (16) from an extended to a retracted position, if the insertion part (10) is not positioned accordingly. Thus, an easily attainable and stable fixation of the insertion part (10) in the receiving part (1) is achieved.

Abstract: 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.

Abstract: The detachable plug coupling serves to connect liquid lines, particularly fuel lines of motor vehicles. The plug coupling is provides a tubular insertion part (3) with an encircling remaining rib (4) and a coupling housing (1) with a cylindrical accommodating space (2) for the insertion part (3). The plug coupling also has an enlarged head part (6) with a separate retaining element (7), which is provided with elastically opening retaining edges (10). The retaining edges are radially directed into the accommodating space (2) and engage behind the retaining rib (4) after the insertion part (3) has been pushed in. In order to ensure that the retaining rib (4) is correctly snapped in behind the retaining edges (10) after the insertion part (3) has been inserted, an additional locking element (17) is provided, which is guided in a transversally displaceable manner on the housing head (6) between an opening position and a closing position.

Abstract: Proposed is a quick coupling unit (1) for lines conducting flowable or pourable media, in which a check valve (5) is integrated for controlling the pressure of the medium or for venting the lines conducting the medium. Said check valve (5) is arranged in an auxiliary branch (4) that comes off the main line of the quick coupling unit (1) and is open to the outside, and its valve body (10) is moved against a restoring force from its position blocking the passage of the medium into its position allowing the passage of the medium by means of a valve stem (12) that can be accessed from the outside. The auxiliary branch (4) is at the same time the valve housing (4) of the check valve (5).

Abstract: The invention relates to a removable plug-in connection for high-pressure lines, in particular brake lines in the construction of motor vehicles. Said connection comprises a cylindrical receiving housing (1) with a central receiving chamber (2), in addition to a tubular plug-in part, which is equipped with a peripheral retaining rib. The insertion side of the receiving housing (1) has an enlarged receiving chamber (2) in which several radially guided locking elements (5) can be embedded, said elements being clamped in the direction of the interior by a retaining ring (14). The locking elements (5) consist of two half-shells (8) comprising retainer wedges (18) that point inwards, engaging behind the retaining rib (4) in a positive fit once the plug-in part (3) has been inserted. Each half-shell (8) has a projecting centring pin on one end face, said pin constituting an extension of the internal wall and engaging in a corresponding cavity on the opposing end face when the two half-shells (8) are assembled.

Abstract: A tubular coupling element for producing a glued joint with a fluid line and a method for producing such a glued joint. The coupling element includes an inner tube that is insertable into a fluid line and an outer tube that is constructed concentric to the inner tube and integrally connected to the rear end of the inner tube by a connecting wall. An annular gap is present between the two tubes and is designed to receive an end section of the fluid line and a hot-melt type adhesive in a compacted solid form shaped as a ring. A connection between the coupling element and the fluid lines can be easily established by first introducing the adhesive in the annular gap and then melting it by rapidly supplying heat while the end section of the fluid line is pressed into the annular gap of the coupling element.

Abstract: Disclosed is a joining element that is part of a fast connecting unit for hydraulic or pneumatic connecting conduits and comprises a tubular basic member (1), onto which two diametrically opposed, laterally spaced-apart two-legged snapping elements (5) are formed. Said snapping elements (5) are connected to the outer wall of the basic member (1) at the swaying point thereof while the free ends of the forward-facing legs thereof are provided with inward-directed hooks (11) which can grip from behind a catching element (12) (undercut) located on the outer wall of a counterpart (4) of the fast connecting unit when the connection is established. The rearward-facing legs of the snapping elements (5) are embodied as spring-type legs (13), the free ends of which are bent back in an inward direction such that a gap (a) remains between said ends and a respective opposite contact area.

Abstract: A rotatable stopcock for a plug-type coupling with an angled piece for connecting fluid lines. The stopcock including a turning knob portion and an integrally formed hollow pin portion. The knob portion includes two opposing ring segments having detent catches that positively engage a flange ring formed on the coupling housing wall. The pin portion is dimensioned to be received into a contact hole of the plug-type coupling such that rotating the stopcock after insertion causes the hollow pin portion to regulate the fluid flow through the plug-type coupling.

Abstract: 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 (3) with an annular retaining lip (4) as well as a coupling housing (1) with a cylindrical receiving space (2) for inserting the plug-in part (3) and a separate retaining element (7) with elastic retaining edges (11) that project radially into the receiving space (2) and that grip behind the retaining lip (4) after the plug-in part (3) is inserted into the receiving space (2). The retaining edges (11) are attached to support bodies (12) that are connected at their ends by elastic connecting pieces (14) that form a V to pressure plates (15). These plates extend outwards through corresponding openings (16) in the housing wall (17) and are pressed together from the outside for releasing the coupling.

Abstract: 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.

Abstract: 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.

Abstract: The invention relates to a rotatable stopcock inserted into a male coupling (2) having a 90° offset connecting piece (3) for connecting to fluid lines. A contact hole (6) for receiving a female pin (8), which is connected to the stopcock (1) and which is provided with a continuous hole (9) having a 90° angle curve for connecting the coupling housing (5) to the connecting piece (3), is situated along the straight extension of the male coupling (2), and the end of the said female pin is connected to a turning knob (7) while forming one piece. In order to be able to securely fix the stopcock (1) to the coupling housing (5) after insertion into the contact hole (6), the housing wall (10) comprises a peripheral flange ring (11) on the contact hole (6). For the same purpose, two ring segments (13) located opposite one another are shaped onto the front wall (12) of the turning knob (7).

Abstract: 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 (3) with an annular retaining lip (4) as well as a coupling housing (1) with a cylindrical receiving space (2) for inserting the plug-in part (3) and a separate retaining element (7) with elastic retaining edges (11) that project radially into the receiving space (2) and that grip behind the retaining lip (4) after the plug-in part (3) is inserted into the receiving space (2). The retaining edges (11) are attached to support bodies (12) that are connected at their ends by elastic connecting pieces (14) that form a V to pressure plates (15). These plates extend outwards through corresponding openings (16) in the housing wall (17) and are pressed together from the outside for releasing the coupling.

Abstract: 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.

Abstract: 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.

Abstract: A connection unit of a releasable quick coupling that includes a cylindrical housing head, connecting sleeve, support sleeve and a ceiling ring. The cylindrical housing head defines a receiving space and includes a retaining element having movable edges that are directed into the receiving space. A tubular inserting part having a encircling retaining rib is insertable into the receiving space such that the retaining rib is engaged by the retaining element. The connecting sleeve is molded an end of the housing head and is adapted to be inserted into the end of the pipeline. The body of the connecting sleeve and detents of the housing head form a mounting space that is adapted to receive and secure an edge of the pipeline. Additionally, a support sleeve is mounted on the connecting sleeve at a second end opposite said housing head. Finally, a sealing ring is disposed within the support sleeve.

Abstract: The invention relates to a detachable rapid-action coupling device designed to receive a tubular plug-in element (3) having a circular retaining rib (4). Said device comprises a receiving housing (1) having a cylindrical receiving space (6) for introducing the plug-in element (3) and a separate retaining element (2) made of hard-elastic plastic material and having elastically expandable retaining edges (17) facing inwards in the shape of an arc of a circle, which edges serve to engage the retaining rib (4) from behind after the plug-in element (3) has been introduced. The retaining element (2) can be pushed in from the outside in an opening (11) of the housing wall (5) to release the plug-in element (3). The receiving space (6) consists of three stepped sections. The housing (1) is embodied as a two-part structure. In order to move the opening (11) for pushing in and releasing the retaining element (2) into a better position, if necessary, when only limited space is available.

Abstract: A releasable plug-in connector having a tubular plug-in part with a peripheral retaining rib, a housing having a cylindrical receiving space having a central axis for receiving the plug-in part and at least one opening in a side wall of the housing communicating with said receiving space and a separate retaining ring of a hard, resilient plastic material and having radially inwardly directed, elastically sprung retaining edges for engaging behind the retaining rib of the plug-in part after the plug-in part has been inserted into the receiving space of the housing to lock the plug-in part in the housing. The retaining ring is insertable through the opening in the housing and into the receiving space so that the ring is retained against axial movement by the housing while the retaining edges are concentric with the axis of the receiving space, the retaining edges being able to be pushed apart in a radial, direction to release the plug-in part by pressing in on the ring through the opening.

Abstract: A releasable plug-in connector for receiving a tubular plug-in part having a peripheral retaining rib. The plug-in connector consists of a housing having a cylindrical receiving space for receiving the plug-in part, and a separate securing ring made from a hard/resilient plastic material. The ring has retaining edges directed inwardly in the form of an arc of a circle that are pushed apart as the plug-in part is pushed into the connector and that then spring back elastically and engage behind the retaining rib after the plug-in part has been pushed in to lock the part in the connector. The retaining edges are connected to one another at their ends by a pair of V-shaped spring webs that are accessible from the outside of the housing so that they can be pushed into an unlocked position permitting the part to be pulled out of the connector.