Outer Joint Part Of A Constant Velocity Universal Joint For A Wheel Hub-Joint-Unit

• US 20080238184A1
• Filed: 10/14/2005
• Published: 10/02/2008
• Est. Priority Date: 11/12/2004
• Status: Active Grant

• Current Assignee: GKN Driveline Deutschland GmbH (Melrose Industries Plc)
• Original Assignee: GKN Driveline Deutschland GmbH (Melrose Industries Plc)
• Inventors: Cermak, Herbert
• Granted Patent: US 7,850,530 B2
• Time in Patent Office: Days
• US Class Current: 301/110
• CPC Class Codes: B60B 27/00 Hubs non-metallic B60B5/00; of high resiliency B60B9/00
• 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: Y10S 464/906 Torque transmitted via radially spaced balls

Abstract

An outer joint part of a constant velocity universal joint for a wheel hub-constant velocity fixed joint unit wherein a wheel hub (60, 90) with a through-aperture (59, 89) carrying inner shaft teeth (44, 74) is clamped relative to the outer joint part (46, 76) of a constant velocity universal joint (42, 72), to which outer joint part (46, 76) there is formed on a journal (53, 83) with outer shaft teeth (54, 84), wherein the inner shaft teeth (44, 74) of the through-aperture (59, 89) and the outer shaft teeth (54, 84) of the journal (53, 83) engage one another and wherein a double-row wheel bearing (43, 73) is slid on to the wheel hub (60, 90) which wheel bearing comprises an inner bearing race (64, 94) which directly supports an end face (52, 82) of the outer joint part (46, 76), wherein the ratio of the journal diameter at the journal base (D_Z) and the journal length (L_Z) is greater than 0.95.

Claims

1-12. -12. (canceled)

13. A wheel hub-constant velocity fixed joint assembly comprising:

a wheel hub with a through-aperture carrying inner shaft teeth clamped relative to an outer joint part of a constant velocity universal joint, to which outer joint part there is formed on a journal with outer shaft teeth, wherein the inner shaft teeth of the through-aperture and the outer shaft teeth of the journal engage one another; and

a double-row wheel bearing slid on to the wheel hub, the wheel bearing comprising an inner bearing race which directly supports an end face of the outer joint part, wherein a ratio of the journal diameter at the journal base (D_Z) and the journal length (L_Z) is greater than 0.95.

14. An assembly according to claim 13, wherein the ratio of the journal diameter at the journal base (D_Z) and the journal length (L_Z) is greater than 1.15.

21. An assembly according to claim 13, wherein the journal comprises a central threaded bore into which it is possible to thread a bolt for tensioning the wheel hub relative to the outer joint part.

22. An assembly according to claim 13, wherein an effective tooth length of the journal substantially corresponds to the journal length (L_Z).

23. An assembly according to claim 13, wherein the constant velocity fixed joint comprises curved ball tracks.

24. An assembly according to claim 13, wherein the constant velocity plunging joint comprises straight ball tracks.

15. A wheel hub-constant velocity fixed joint assembly, comprising:

a wheel hub with a through-aperture carrying inner shaft teeth clamped relative to an outer joint part of a constant velocity universal joint, to which outer joint part there is formed on a journal with outer shaft teeth, wherein the inner shaft teeth of the through-aperture and the outer shaft teeth of the journal engage one another; and

a double-row wheel bearing slid on to the wheel hub, the wheel bearing comprising an inner bearing race which directly supports an end face of the outer joint part, wherein a ratio of the diameter (D_A) of the end face and the length (L_Z) of the journal is greater than 1.8.

16. An assembly according to claim 15, wherein the ratio of the diameter (D_A) of the end face and the length (L_Z) of the journal is greater than 2.5.

17. A wheel hub-constant velocity fixed joint assembly, comprising:

a wheel hub with a through-aperture carrying inner shaft teeth clamped relative to an outer joint part of a constant velocity universal joint, to which outer joint part there is formed on a journal with outer shaft teeth, wherein the inner shaft teeth of the through-aperture and the outer shaft teeth of the journal engage one another; and

a double-row wheel bearing slid on to the wheel hub, the wheel bearing comprising an inner bearing race which directly supports an end face of the outer joint part, wherein a ratio of the diameter (D_A) of the end face and the diameter (D_Z) of the journal is less than 1.7.

18. An assembly according to claim 17, wherein the ratio of the diameter (D_A) of the end face and the diameter (D_Z) of the journal is less than 1.5.

19. A wheel hub-constant velocity fixed joint assembly, comprising:

a wheel hub with a through-aperture carrying inner shaft teeth clamped relative to an outer joint part of a constant velocity universal joint, to which outer joint part there is formed on a journal with outer shaft teeth, wherein the inner shaft teeth of the through-aperture and the outer shaft teeth of the journal engage one another; and

a double-row wheel bearing slid on to the wheel hub, the wheel bearing comprising an inner bearing race which directly supports an end face of the outer joint part,

wherein a ratio of the distance (L_GZ) between the center of the outer joint part (M_G) and the journal end, and the journal length (L_Z) is less than 2.2.

20. An assembly according to claim 19, wherein the ratio of the distance (L_GZ) between the center of the outer joint part (M_G) and the journal end, and the journal length (L_Z) is less than 2.0.