Front Wheel Guide for a Single-Track Motor Vehicle

Abstract

A front wheel guide for a single-track motor vehicle has a telescopic fork, a fork bridge and a longitudinal control arm. The telescopic fork has two fork rods, which each have a lower fork tube and an upper fork tube which can be slid relative to the lower fork tube. The fork bridge extends in a transverse direction and interconnects the lower fork tubes of the fork rods. The longitudinal control arm, which is pivotably articulated to the vehicle, is connected to the fork bridge by way of a ball joint. The front wheel guide is characterized in that the longitudinal control arm is rotatably mounted on the ball joint by way of at least one rolling element bearing.

Claims

1.-10. (canceled)

11. A front wheel guide for a single-track motor vehicle, comprising: a telescopic fork comprising two fork rods which, in each case, comprise a lower fork tube and an upper fork tube which is arranged displaceably relative thereto; a fork bridge extending in a transverse direction and connecting the lower fork tubes of the two fork rods to one another; a longitudinal link which is articulated pivotably on the single-track motor vehicle, and is connected via a ball joint to the fork bridge; and at least one anti-friction bearing by which the longitudinal link is mounted rotatably on the ball joint.

12. The front wheel guide according to claim 11, wherein the longitudinal link is mounted rotatably on the ball joint via two anti-friction bearings.

13. The front wheel guide according to claim 11, wherein the ball joint comprises a ball joint pivot which extends along a ball pivot axis, and the respective anti-friction bearing mounts the longitudinal link on the ball joint pivot rotatably about the ball pivot axis.

14. The front wheel guide according to claim 13, wherein the ball joint pivot comprises two radially extending projections which, in each case, form a shoulder for contact of the respective anti-friction bearing and between which the anti-friction bearing is arranged or fixed in a positively locking manner.

15. The front wheel guide according to claim 13, wherein the longitudinal link comprises a fastening portion with an opening for engaging over the ball joint pivot.

16. The front wheel guide according to claim 12, wherein the longitudinal link comprises a fastening portion with an opening for engaging over the ball joint pivot, and the opening of the longitudinal link comprises an engagement ring which is arranged between the two anti-friction bearings.

17. The front wheel guide according to claim 16, wherein the respective anti-friction bearing is fixed in a positively locking manner between, in each case, one projection and the engagement ring.

18. The front wheel guide according to claim 16, wherein the engagement ring of the longitudinal link is arranged spaced apart from the ball joint pivot, as a result of which a gap is configured.

19. The front wheel guide according claim 11, wherein the at least one of anti-friction bearing is a spherical roller bearing or a tapered roller bearing.

20. The front wheel guide according to claim 11, wherein a connecting region between the fork bridge and the ball joint is sealed with respect to a surrounding area by way of a seal.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0018] FIG. 1 is a perspective view of a front wheel guide for a single-track motor vehicle; and

[0019] FIG. 2 is a sectional view of a connecting region of a front wheel guide for a single-track motor vehicle.

DETAILED DESCRIPTION OF THE DRAWINGS

[0020] FIG. 1 shows a perspective view of a front wheel guide 1 for a single-track motor vehicle with a telescopic fork 2, a fork bridge 6 and a longitudinal link 7.

[0021] The telescopic fork 2 has two fork rods 3 which in each case comprise a lower fork tube 4 and an upper fork tube 5 which is arranged displaceably relative thereto. Here, the fork bridge 6 extends in the transverse direction Q, and connects the lower fork tubes 4 of the fork rods 3 to one another. The transverse direction Q runs transversely with respect to an axis which extends from the front wheel to the rear wheel of the single-track motor vehicle. Furthermore, the longitudinal link 7 which is articulated pivotably on the single-track motor vehicle (not shown) is connected to the fork bridge 6 in a connecting region 12.

[0022] FIG. 2 shows a sectional view of the connecting region 12 which is shown in FIG. 1 between the fork bridge 6 and the longitudinal link 7 of the front wheel guide 1. The longitudinal link 7 which is articulated pivotably on the single-track motor vehicle (not shown) is connected to the fork bridge 6 by means of a ball joint 8. The fork bridge 6 has a receptacle with a shape of a truncated tetrahedron. This receptacle is adapted correspondingly to the spherical portion of the ball joint 8, with the result that the longitudinal link 7 is mounted on the fork bridge 6 in an optimum manner.

[0023] Furthermore, FIG. 2 shows that the longitudinal link 7 is mounted rotatably on the ball joint 8 by means of two anti-friction bearings 9. For this purpose, the ball joint 8 comprises a ball joint pivot 10 which extends along a ball pivot axis A. Here, moreover, the respective anti-friction bearing 9 mounts the longitudinal link 7 on the ball joint pivot 10 rotatably about the ball pivot axis A. In this design variant, the anti-friction bearing 9 is configured as a spherical roller bearing.

[0024] The ball joint pivot 10 comprises two radially extending projections 11 which are configured in each case as a shoulder for contact with the respective anti-friction bearing 9, and between which the two anti-friction bearings 9 are arranged or fixed in a positively locking manner.

[0025] The longitudinal link 7 configures a fastening portion 15 which comprises an opening 14 for engaging over the ball joint pivot 10. This opening 14 of the longitudinal link 7 comprises an engagement ring 16 which is arranged between in each case one outer ring of the two anti-friction bearings 9. A sleeve is situated between a respective inner ring of the two anti-friction bearings 9. In the sectional view of FIG. 2, the fastening portion 15 with the engagement ring 16 has a T-shaped structure, as a result of which a supporting face for the respective anti-friction bearing 9 is configured. As a consequence, the respective anti-friction bearing 9 is fixed in a positively locking manner between in each case one of the two projections 11 and the engagement ring 16 or the sleeve. Here, the anti-friction bearings 9 bear by way of their cages against the shoulder or the projection 11 and the engagement ring 16 or the sleeve.

[0026] Moreover, FIG. 2 shows that the engagement ring 16 of the longitudinal link 7 is arranged spaced apart from the ball joint pivot 10, as a result of which a gap 17 is configured. The connecting region 12 between the fork bridge 6 and the ball joint 8 is sealed with respect to a surrounding area by way of a seal 13.