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Constant velocity fixed ball joint as a counter track joint

Imported: 24 Feb '17 | Published: 06 Jan '04

Wolfgang Hildebrandt, Stephan Maucher, Thomas Weckerling, Hans Wormsbächer

USPTO - Utility Patents

Abstract

A constant velocity fixed ball joint in the form of a counter track joint, having an outer joint part with outer tracks, an inner joint part with inner tracks, torque transmitting balls which are received in pairs of tracks consisting of outer tracks and inner tracks, and a ball cage with cage windows in which the balls are held in a common plane and are guided on to the angle-bisecting plane when the joint is articulated. First outer tracks, together with first inner tracks, form pairs of tracks whose control angles open in a first axial direction and in which first balls are held. Second outer tracks, together with second inner tracks, form pairs of tracks whose control angles open in a second axial direction and in which second balls are held. The control angles are defined as angles between the tangents at the ball contact points in the tracks. The outer joint part, on its inside, forms a stop-and-guiding face for a spherical outer face of the ball cage. The stop-and-guiding face is undercut-free if viewed in the second axial direction (R

2). The ball cage, on its inside, forms a stop-and-guiding face for a spherical outer face of the inner joint part. The stop-and-guiding face is undercut-free if viewed in the first axial direction (R

1).

Description

BRIEF DESCRIPTION OF THE DRAWINGS

For a more complete understanding of this invention, reference should now be made to the embodiments illustrated in greater detail in the accompanying drawings and described below by way of examples of the invention.

In the drawings:

FIG. 1 shows an inventive fixed joint in a first embodiment in the form of a disc joint: (a) in a longitudinal section through a plane extending through ball tracks, (b) in a longitudinal section through a plane between ball tracks.

FIG. 2 shows an inventive fixed joint in a second embodiment with a one-piece bell-shaped outer joint part: (a) in a longitudinal section through a plane extending through ball tracks, (b) in a longitudinal section through a plane between ball tracks.

Claims

1. A constant velocity fixed ball joint in the form of a counter track joint, comprising:

2. A joint according to claim 1, wherein in the second axial direction (R

2), the inner joint part, by way of its second inner tracks, is supported on the second balls axially held in the cage windows of the ball cage.

3. A joint according to claim 1, wherein all of the tracks are provided in their respective components in the form of undercut-free tracks.

4. A joint according to claim 1, wherein said first outer tracks and first inner tracks are undercut-free tracks, and said second outer tracks and second inner tracks are non-undercut-free tracks.

5. A joint according to claim 1, wherein all of the tracks are provided in their respective components in the form of non-undercut-free tracks.

6. A joint according to claim 1, wherein the joint is provided in the form of a disc joint whose outer joint part is open at both ends.

7. A joint according to claim 1 comprising an outer joint part having a joint base integrally formed on at one end.

8. A joint according to claim 1, wherein in the first axial direction (R

1), the ball cage, by way of its cage windows, is supported on the second balls held in the second outer tracks and in the second inner tracks.

9. A joint according to claim 8, wherein all of the tracks are provided in their respective components in the form of undercut-free tracks.

10. A joint according to claim 8, wherein said first outer tracks and first inner tracks are undercut-free tracks, and said second outer tracks and second inner tracks are non-undercut-free tracks.

11. A joint according to claim 8, wherein all of the tracks are provided in their respective components in the form of non-undercut-free tracks.

12. A joint according to claim 8, wherein the joint is provided in the form of a disc joint whose outer joint part is open at both ends.

13. A joint according to claim 8 comprising an outer joint part having a joint base integrally formed on at one end.

14. A joint according to claim 8, wherein in the second axial direction (R

2), the inner joint part, by way of its second inner tracks, is supported on the second balls axially held in the cage windows of the ball cage.

15. A joint according to claim 14, wherein all of the tracks are provided in their respective components in the form of undercut-free tracks.

16. A joint according to claim 14, wherein said first outer tracks and first inner tracks are undercut-free tracks, and said second outer tracks and second inner tracks are non-undercut-free tracks.

17. A joint according to claim 14, wherein all of the tracks are provided in their respective components in the form of non-undercut-free tracks.

18. A joint according to claim 14 comprising an outer joint part having a joint base integrally formed on at one end.