Anton Hummel Verwaltungs Gmbh

Jurgen Adolf

Mario Bartholoma

Fritz Zugel

Volker Gotz

Volker G&ouml;tz

Mario Bartholom{umlaut Over (a)}

Fritz Z{umlaut Over (u)}gel

A connection fitting (,) for attaching tubes, corrugated hoses, pipes, cables or other oblong bodies (,), in an opening or hole (,) of a wall (,), of a housing is provided. In this, the connection fitting (,) has an attachment projection (,) that can be anchored in the opening (,) and has retaining projections (,) located on abutment contact studs (,) formed by axial slots (,) that project radially outwardly across from a constriction. The abutment contact studs (,) and their retaining projections (,) are designed such that they have only a part of their retaining effect after insertion of the attachment projection (,) into the opening (,), i.e. they can be moved out of the opening (,) under a loading opposite to the insertion direction. For a final attachment that is resistant to pulling force and compression, an axially movable and somewhat sheath-shaped lock (,) is provided inside the connection fitting (,) which locks the abutment contact studs (,) with their retaining projections (,) in the usage position against a radially inwardly directed deformation, and in particular additionally pivots them outwardly so that the locking and retaining surfaces (,) of the retaining projections (,) engage behind the edge (,) to a greater extent than in the preliminary mounting position.

Connection fitting with an attachment projection

A connection fitting (1) is provided for fastening long bodies, such as hoses, particularly corrugated hoses (2), but also pipes or cables, to an opening (3), for example in a wall (4) of a housing. The fitting (1) has a fastening projection (5), protruding axially in the plug-in direction (Pf1), which is divided into retaining tongues (7) by slots (6). Retaining projections (8) are arranged protruding approximately radially outwardly from these retaining tongues. When the fastening projection (5) is inserted into the opening (3) or similar passageway, the retaining tongues (7) are deformed radially inwardly by an edge (10) of the opening (3) against a restoring force, and arrive at their fastening position beyond the opposing edge (9) of the opening (3), whereby the retaining projections (8) grasp behind this edge (9). Spaced axially from the retaining projections (8), a detent is arranged which rests in the fastening position on the opening edge (10) lying opposite the edge (9) of the opening (3) which has been grasped behind, i.e. the edge (10) which is the front edge in the plug-in direction. This detent includes an elastic ring (11) supported on an angled surface (12) of the connection fitting (1) that widens outwardly obliquely away from the opening (3). The ring (11) is pressed against this angled surface (12) and/or displaced in the axial direction on this angled surface (12) under elastic deformation and/or under expansion of its diameter against a restoring force. In this process, this elastically flexible ring (11) can simultaneously have a sealing function.

Connection fitting having an axially protruding fastening projection

Growing community of inventors

Denzlingen, Germany

Jurgen Adolf