Push-pull connecting system for pressure lines, brake-system lines in particular
OwnerDieter Kramerinventor
Life of this patent
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Abstract
A connecting system for pressure lines, especially plastic pressure lines for brake systems, comprises a housing with a bore therethrough, a male connector having a stem adapted to be pushed into and pulled out of the bore. Locking of the connector in the bore is obtained by a resilient, preferably split retaining ring inserted into an annular groove open towards the bore, which after insertion of the connector into the bore will partially engage in a circumferential groove provided in the stem of the connector.
Claims23
A connecting system for pressure lines, particularly plastic pressure lines for brake systems, comprising housing means formed with a bore therethrough, said housing means including a first housing part having a stepped inner wall and a second housing part threadingly engageable with said first housing part and defining a lower abutment face which overlaps a step in said inner wall and forms with a part of said inner wall a first annular groove;
- a male connector having a stem portion insertable into said bore and provided in said stem portion with a second annular groove which is transversely alignable with said first annular groove;
- a retaining ring of a resiliently deformable material, said ring resting on said step of said first housing part and in its released condition when the threading engagement of the two housing parts is loosened, extending in the path of movement of said stem portion past said second annular groove so as after being deformed by the inserted connector to snap into said second annular groove while, when the second housing part is fully screwed into said first housing part, said lower abutment face compresses said retaining ring against said step and the extended deformed part of the ring tightly engages aid second groove;
- spring means between said connector and said housing means for pressing said connector against said retaining ring;
- said retaining ring engaging a peripheral surface of said first annular groove at three points and comprising two uniformly curved arms integrally connected to each other at one end and having opposite said one end a free end, said arms being curved at a greater radius of curvature in the middle thereof than at said connected end, and said arms being provided at the free ends thereof with cut-outs increasing in width towards said free ends.
A connecting system for pressure lines, particularly plastic pressure lines for brake systems, comprising housing means formed with a bore therethrough, said housing means including a first housing part having a stepped inner wall and a second housing part threadingly engageable with said first housing part and defining a lower abutment face which overlaps a step in said inner wall and forms with a part of said inner wall a first annular groove;
- a male connector having a stem portion insertable into said bore and provided in said stem portion with a second annular groove which is transversely alignable with said first annular groove;
- a retaining ring formed of a band of spring material, said ring resting on said step of said first housing part and in its released condition when the threading engagement of the two housing parts is loosened, extending in the path of movement of said stem portion past said second annular groove so as after being deformed by the inserted connector to snap into said second annular groove while, when the second housing part is fully screwed into said first housing part, said lower abutment face compresses said retaining ring against said step and the extended deformed part of the ring tightly engages said second groove;
- spring means between said connector and said housing means for pressing said connector against said retaining ring;
- said retaining ring engaging a peripheral surface of said first annular groove at three points and comprising two mirror-symmetrically arranged curved arms integrally connected to each other at one end, said arms enclosing an oval area and having at a middle region thereof a greater radius of curvature than in the other region thereof, said arms having opposite said connected ends free inwardly bent ends.
A connecting system for pressure lines, particularly plastic pressure lines for brake systems, comprising housing means formed with a bore therethrough, said housing means including a first housing part having a stepped inner wall and a second housing part threadingly engageable with said first housing part and defining a lower abutment face which overlaps a step in said inner wall and forms with a part of said inner wall a first annular groove;
- a male connector having a stem portion insertable into said bore and provided in said stem portion with a second annular groove which is transversely alignable with said first annular groove;
- a retaining ring formed of a band of spring material, said ring resting on said step of said first housing part and in its released condition when the threading engagement of the two housing parts is loosened, extending in the path of movement of said stem portion past said second annular groove so as after being deformed by the inserted connector to snap into said second annular groove while, when the second housing part is fully screwed into said first housing part, said lower abutment face compresses said retaining ring against said step and the extended deformed part of the ring tighly engages said second groove;
- spring means between said connector and said housing means for pressing said connector against said retaining ring;
- said retaining ring engaging a peripheral surface of said first annular groove at three points and comprising two mirror-symmetrically arranged curved arms integrally connected to each other at one end, said arms enclosing an oval area and having at a middle region thereof a greater radius of curvature than in the other region thereof, said arms having opposite said connected ends free inwardly bent ends and each of said arms has in the middle region thereof at upper and lower edges of said band of spring material outwardly projecting portions extending substantially normal to the remainder of the band and forming abutment faces for said retaining ring.
A connecting system for pressure lines, particularly plastic pressure lines for brake systems, comprising housing means formed with a bore therethrough, said housing means including a first housing part having a stepped inner wall ans a second housing part threadingly engageable with said first housing part and defining a lower abutment face which overlaps a step in said inner wall and forms with a part of said inner wall a first annular groove;
- a male connector having a stem portion insertable into said bore and provided in said stem portion with a second annular groove which is transversely alignable with said first annular groove;
- a retaining ring formed of a band of spring material, said ring resting on said step of said first housing part and in its released condition when the threading engagement of the two housing parts is loosened, extending in the path of movement of said stem portion past said second annular groove so as after being deformed by the inserted connector to snap into said second annular groove while, when the second housing part is fully screwed into said first housing part, said lower abutment face compresses said retaining ring against said step and the extended deformed part of the ring tightly engages said second groove;
- spring means between said connector and said housing means for pressing said connector against said retaining ring;
- said retaining ring engaging a peripheral surface of said first annular groove at three points;
- and said band of spring material forming said retaining ring having an outer substantially circular portion and two inwardly bent spring arms integrally connected to said outer portion and forming at the junction of said outer portion with said inwardly bent spring arms a gap.
A connecting system for pressure lines, particularly plastic pressure lines for brake systems, comprising housing means formed with a bore therethrough, said housing means including a first housing part having a stepped inner wall and a second housing part threadingly engageable with said first housing part and defining a lower abutment face which overlaps a step in said inner wall and forms with a part of said inner wall a first annular groove;
- a male connector having a stem portion insertable into said bore and provided in said stem portion with a second annular groove which is transversely alignable with said first annular groove;
- a retaining ring formed of a band of spring material, said ring resting on said step of said first housing part and in its released condition when the threading engagement of the two housing parts is loosened, extending in the path of movement of said stem portion past said secondannular groove so as after being deformed by the inserted connector to snap into said second annular groove while, when the second housing part is fully screwed into said first housing part, said lower abutment face compresses said retaining ring against said step and the extended deformed part of the ring tightly engages said second groove;
- spring means between said connector and said housing means for pressing said connector against said retaining ring;
- said retaining ring engaging a peripheral surface of said first annular groove at three points;
- said band of spring material forming said retaining ring having an outer substantially circular portion and two inwardly bent spring arms integrally connected to said outer portion and forming at the junction of said outer portion with said inwardly bent spring arms a gap;
- and said outer portion defining an outer radius of curvature substantially equal to that of the outer peripheral surface of said first groove and said inwardly bent spring arms defining between themselves a substantially oval space.
A connecting system for pressure lines, particularly plastic pressure lines for brake systems, comprising housing means formed with a bore therethrough, said housing means including a first housing part connected to a line and having a stepped inner wall provided with an internal thread and a second housing part having an outer wall provided with an external thread which is engageable with said first housing part and defining a lower abutment face which, in the engaged condition of said two housing parts extends substantially parallel to a step in said inner wall and forms with said step and a part of said inner wall a first annular groove;
- a male connector having a stem portion insertable into said bore and provided in said stem portion with a second annular groove which is transversely alignable with said first annular groove;
- a retaining ring of a resiliently deformable material, said ring resting on said step of said first housing part and extending in radial direction in the path of movement of said stem portion past said second annular groove so as after being deformed by the inserted connector to snap into said second annular groove;
- and spring means between said connector and said housing means for pressing said connector in an axial direction against said retaining ring so that the radially extended part of the ring tightly engages said second groove and said lower abutment face.
A connecting system for pressure lines, particularly plastic pressure lines for brake systems, comprising housing means formed with a bore therethrough, said housing means including a first housing part having a stepped inner wall provided with an internal thread and a second housing part having an outer wall provided with an external thread which is engageable with said first housing part and defining a lower abutment face which, in the engaged condition of said two housing parts extends substantially parallel to a step in said inner wall and forms with said step and a part of said inner wall a first annular groove;
- a male connector having a stem portion insertable into said bore and provided in said stem portion with a second annular groove which is transversely alignable with said first annular groove;
- a retaining ring of a resiliently deformable material, said ring resting on said step of said first housing part and extending in radial direction in the path of movement of said stem portion past said second annular groove so as after being deformed by the inserted connector to snap into said second annular groove;
- and metal spring means between said connector and said housing means for pressing said connector in an axial direction against said retaining ring so that the radially extended part of the ring tightly engages said second groove and said lower abutment face.
Dependencies are inferred from the claim text.