Bearing assembly for a wheel hub/constant velocity universal joint unit

• US 5,536,098 A
• Filed: 06/10/1993
• Issued: 07/16/1996
• Est. Priority Date: 06/12/1992
• Status: Expired due to Fees

• Current Assignee: Lohr & Bromkamp GmbH (GKN PLC)
• Original Assignee: Lohr & Bromkamp GmbH (GKN PLC)
• Inventors: Schwarzler, Peter
• Primary Examiner(s): Bertsch, Richard A.
• Assistant Examiner(s): Wicker, William
• Application Number:
  US08/075,053
• Time in Patent Office: 1,132 Days
• Field of Search: 403/259, 403/318, 403/319, 403/355, 403/356, 403/359, 464/178, 464/182, 301/126, 301/131, 301/132, 301/124.1, 301/105.1, 180/258, 180/259, 384/544
• US Class Current: 403/259
• CPC Class Codes: B60B 27/00 Hubs non-metallic B60B5/00; of high resiliency B60B9/00
• CPC Class Codes: B60B 27/0005 with ball bearings
• CPC Class Codes: B60B 27/0026 of the radial type, e.g. splined key
• CPC Class Codes: B60B 27/0073 characterised by sealing means
• CPC Class Codes: F16B 2200/403 Threaded clamping parts
• CPC Class Codes: F16B 2200/69 Redundant disconnection blocking means
• CPC Class Codes: F16C 19/187 with all four raceways integrated on parts other than race rings, e.g. fourth generation hubs
• CPC Class Codes: F16C 2326/02 Wheel hubs or castors in general B60B
• CPC Class Codes: F16C 25/06 Ball or roller bearings
• CPC Class Codes: F16C 33/60 divided or split, e.g. comprising two juxtaposed rings
• CPC Class Codes: F16C 35/0635 the bore of the inner ring being of special non-cylindrical shape which co-operates with a complementary shape on the shaft, e.g. teeth, polygonal sections
• CPC Class Codes: F16C 43/04 Assembling rolling-contact bearings
• CPC Class Codes: F16D 1/108 having retaining means rotating with the coupling and acting by interengaging parts, i.e. positive coupling
• CPC Class Codes: F16D 2001/103 the torque is transmitted via splined connections
• CPC Class Codes: F16D 2003/22326 Attachments to the outer joint member, i.e. attachments to the exterior of the outer joint member or to the shaft of the outer joint member
• CPC Class Codes: F16D 3/223 the rolling members being guided in grooves in both coupling parts
• CPC Class Codes: Y10T 403/7028 Splayed or having a cam surface for anti-backlash

Abstract

A bearing assembly for a wheel hub/constant velocity universal joint unit which includes a double-row bearing which has a one-piece outer bearing ring to be connected to a wheel carrier. The bearing inner bearing rings are directly formed by the wheel hub, on the one hand, and by the outer part of the constant velocity universal joint, on the other hand. The parts non-rotatingly engage one another in a form-fitting way and are axially tensioned relative to one another, with the wheel hub, on the one hand, and the outer part of the constant velocity universal joint, on the other hand, including form-fitting engaging mechanism, which are adapted to one another and which enable the two parts to be connected in only one single angular position relative to one another.

Claims

1. A bearing assembly for a wheel/hub constant velocity universal joint comprising:

a wheel hub;

a constant velocity universal joint including an outer joint part;

a double-row bearing, said bearing including a one-piece outer bearing ring to be connected to a wheel carrier, inner bearing rings are directly formed by the wheel hub and by the outer joint part;

said wheel hub and said outer joint part non-rotatingly engaging one another in a form-fitting way and being axially braced with each other and radially centered relative to one another along an axis of the wheel hub and the outer joint part; and

form-fitting engaging means for enabling the hub and the outer joint part to be connected in only one single angular position relative to one another, said form fitting engaging means unitarily formed with said wheel hub and outer joint part.

2. An assembly according to claim 1, wherein said engaging means comprising inner teeth on the wheel hub and outer teeth on the outer joint part with at least one tooth or spline on one part and a counter-profile in the other part deviating from the remaining ones.

3. An assembly according to claim 1, wherein said engaging means comprising outer teeth at the wheel hub and inner teeth at the outer joint part with at least one tooth or spline in one part and a counter-profile in the other part deviating from the remaining ones.

4. An assembly according to claim 1, wherein the engaging means comprising at least one end projection and at least one corresponding end recess on the wheel hub and the outer joint part.

5. An assembly according to claim 1, wherein driving teeth for non-rotatingly engaging the wheel hub and the outer joint part with one another are arranged axially in front of the wheel bearing.

6. An assembly according to claim 1, wherein driving teeth for non-rotatingly engaging the wheel hub and the outer joint part with one another are arranged axially behind the wheel bearing.

7. An assembly according to claim 1, and including tensioning means for said axially bracing of the wheel hub and the outer joint part with one another.

8. An assembly according to claim 7 said tensioning means including a tensioning bolt threaded into a central internal thread in the outer joint part and including a head which is externally supported on the wheel hub.

9. An assembly according to claim 7 and including a journal which centrally adjoins the outer joint part, said journal having outer teeth which engage inner teeth in the wheel hub and a nut externally supporting the wheel hub threaded onto a thread on the journal end.