Plug-type connection arrangement for a hose and a pipe

• US 7,562,910 B2
• Filed: 10/10/2007
• Issued: 07/21/2009
• Est. Priority Date: 10/10/2006
• Status: Expired due to Fees

• Current Assignee: Norma Germany GmbH (NORMA Group SE)
• Original Assignee: Norma Germany GmbH (NORMA Group SE)
• Inventors: Wachter, Gerhard, Kertesz, Janos
• Primary Examiner(s): BOCHNA, DAVID
• Application Number:
  US11/973,943
• Publication Number:
  US 20080084061A1
• Time in Patent Office: 650 Days
• Field of Search: 285/256, 285/258, 285/257, 285/305, 285/921
• US Class Current: 285/256
• CPC Class Codes: F16L 33/2073 directly connected to the rigid member
• CPC Class Codes: F16L 33/213 only a sleeve being expanded inside the hose
• CPC Class Codes: F16L 37/0885 with access to the split elastic ring from a radial or tangential opening in the coupling
• CPC Class Codes: F16L 37/1225 using a retaining member the extremities of which, e.g. in the form of a U, engage behind a shoulder of both parts
• CPC Class Codes: Y10S 285/921 Snap-fit

Abstract

A plug-type connection arrangement for a hose and a pipe, the connection arrangement comprising a sleeve having an outer wall and an inner wall, wherein the hose is insertable from an end of the sleeve and is clampable in the sleeve, wherein the sleeve has at another end thereof a first annular groove with an open resilient connecting ring which extends over more than 180° and is lockable to the sleeve and the pipe, and a sealing ring for sealing the sleeve relative to the pipe in a connected state of the pipe and the hose, the connecting ring being comprised of a plate spring ring with inwardly directed flanges at both circumferential edges thereof, wherein the flanges of one circumferential edge are engageble in the first annular groove and the flanges of the other circumferential edge are engageable behind a holding rib on the pipe, wherein the sealing ring is mounted in a second annular groove formed by the inner wall of the sleeve and the axially inner wall of the first annular groove, and wherein an end portion of the pipe is insertable into the sleeve.

Claims

1. A plug-type connection arrangement for a hose and a pipe, the connection arrangement comprising a sleeve having an outer wall and an inner wall, wherein the hose is insertable from an end of the sleeve and is clampable in the sleeve, wherein the sleeve has at another end thereof a first annular groove with an open resilient connecting ring which extends over more than 180°

and is lockable to the sleeve and the pipe, and a sealing ring for sealing the sleeve relative to the pipe in a connected state of the pipe and the hose, the connecting ring being comprised of a plate spring ring with inwardly directed flanges at both circumferential edges thereof, wherein the flanges of one circumferential edge are engageble in the first annular groove and the flanges of the other circumferential edge are engageable behind a holding rib on the pipe, wherein the sealing ring is mounted in a second annular groove formed by the inner wall of the sleeve and the axially inner wall of the first annular groove, and wherein an end portion of the pipe is insertable into the sleeve.

2. The plug-type connection arrangement according to claim 1, wherein at least one of the sleeve walls comprises sheet metal which is permanently deformable in a direction toward the hose.

3. The plug-type connection arrangement according to claim 1, wherein the first annular groove is formed by two walls of permanently deformable sheet metal of the sleeve.

4. The plug-type connection arrangement according to claim 1, wherein the outer wall of the sleeve has at least one inwardly protruding protrusion for engagement in the hose material.

5. The plug-type connection arrangement according to claim 4, wherein the outer wall of the sleeve comprises permanently deformable sheet metal having for each protrusion of the outer wall a slot extending in the circumferential direction of the sleeve, wherein an edge of the slot facing away from the hose end inserted into the sleeve is pressed inwardly as a projection of the outer wall.

6. The plug-type connection arrangement according to claim 5, wherein the inner wall of the sleeve is comprised of synthetic material and is in a positively engaging manner connected to the outer wall of the sleeve.

7. The plug-type connection arrangement according to claim 6, wherein the inner wall of the sleeve has ribs shaped on the outside thereof shaped like a fir tree.

8. The plug-type connection arrangement according to claim 6, wherein the synthetic material of the inner wall of the sleeve is thermoplastic and the inner wall forms a bottom and the axially inner wall of the second annular groove.

9. The plug-type connection arrangement according to claim 8, wherein the sealing ring is comprised of a lip seal which comprises an elastomer and is injection molded in the second annular groove to the synthetic material of the inner wall of the sleeve.

10. The plug-type connection arrangement according to claim 1, wherein the outer wall of the sleeve is comprised of synthetic material and the inner wall of the sleeve has permanently deformable sheet metal and is connected in a positively engaging manner with the outer wall.

11. The plug-type connection arrangement according to claim 2, wherein the sleeve and the first annular groove are integrally formed as one piece.

12. The plug-type connection arrangement according to claim 6, wherein the positively engaging connection between the housing walls is a locked plug-type connection.