Output shaft of a vehicle

Patent metadata

Field	Value
Publication number	US-11959528-B2
Application number	US-201917251654-A
Country	US
Kind code	B2
Filing date	May 13, 2019
Priority date	Jun 12, 2018
Publication date	Apr 16, 2024
Grant date	Apr 16, 2024

Abstract

A vehicle output shaft includes a torque transmission shaft, a drive-side end which is connected to a differential by way of a differential-side joint, and an output-side end which is connected to a driven wheel of the motor vehicle by way of a wheel-side joint, as well as at least one torsional vibration damper. The torsional vibration damper is arranged in a series circuit between the torque transmission shaft and at least one of the joints.

First claim

What is claimed is:

1. A vehicle output shaft, comprising:
a torque transmission shaft having an axis of rotation;
a drive-side end which is connected to a differential by way of a differential-side joint;
an output-side end which is connected to a driven wheel of a motor vehicle by way of a wheel-side joint; and
at least one torsional vibration damper, the at least one torsional vibration damper comprising an inner ring which is fixedly connected to one end of the torque transmission shaft and coaxial with the axis of rotation, and an outer ring which is formed coaxially around the inner ring and axis of rotation, the inner ring and the outer ring being rotatable relative to each other;
wherein the at least one torsional vibration damper is arranged in a series connection with the torque transmission shaft and with at least one of the differential-side or wheel-side joints; and,
wherein the inner ring comprises at least two spiral springs which are arranged in a circumferential direction relative to the axis of rotation, and are supported on the outer ring.

2. The vehicle output shaft according to claim 1 , wherein
the at least one torsional vibration damper comprises at least one hydraulic damper element.

3. The vehicle output shaft according to claim 2 , wherein
the outer ring has at least one cavity which extends along the circumference of the at least one torsional vibration damper, is filled with damping fluid and has at least one constriction, by which constriction damping takes place during a relative rotation of the outer ring with respect to the inner ring.

4. The vehicle output shaft according to claim 3 , wherein
the constriction comprises a gap, and a size of the gap is selectively.

5. The vehicle output shaft according to claim 3 , wherein the number of cavities is equal to the number of spiral springs.

6. The vehicle output shaft according to claim 3 , wherein the spiral springs comprise a hardness or spring rate such that a wall of the cavity does not strike against the inner ring.

7. The vehicle output shaft according to claim 1 , wherein
the at least one torsional vibration damper is formed rotationally symmetrically with respect to the axis of rotation, with a uniform distribution of mass.

8. The vehicle output shaft according to claim 1 , wherein
the outer ring is part of a housing of the wheel-side and/or of the differential-side joint.

9. A vehicle output shaft, comprising:
a torque transmission shaft having an axis of rotation;
a drive-side end which is connected to a differential by way of a differential-side joint;
an output-side end which is connected to a driven wheel of a motor vehicle by way of a wheel-side joint; and
at least one torsional vibration damper, the at least one torsional vibration damper comprising an inner ring which is fixedly connected to one end of the torque transmission shaft and coaxial with the axis of rotation, and an outer ring which is formed coaxially around the inner ring and the axis of rotation, the inner ring and the outer ring being rotatable relative to each other;
wherein the at least one torsional vibration damper is arranged in a series connection with the torque transmission shaft and with at least one of the differential-side or wheel-side joints; and,
wherein the at least one torsional vibration damper comprises at least one hydraulic damper element.

10. The vehicle output shaft according to claim 9 , wherein
the inner ring comprises at least two spiral springs which are arranged in a circumferential direction relative to the axis of rotation and are supported on the outer ring.

11. The vehicle output shaft according to claim 9 , wherein
the outer ring has at least one cavity which extends along the circumference of the at least one torsional vibration damper, is filled with damping fluid and has at least one constriction, by which constriction damping takes place during a relative rotation of the outer ring with respect to the inner ring.

12. The vehicle output shaft according to claim 11 , wherein the constriction comprises a gap, and a size of the gap is selectively adjustable.

13. The vehicle output shaft according to claim 11 , wherein the spiral springs comprise a hardness or spring rate such that a wall of the cavity does not strike against the inner ring.

14. The vehicle output shaft according to claim 9 , wherein
the at least one torsional vibration damper is formed rotationally symmetrically with respect to the axis of rotation, with a uniform distribution of mass.

15. The vehicle output shaft according to claim 9 , wherein
the outer ring is part of a housing of the wheel-side and/or of the differential-side joint.

Assignees

• Bayerische Motoren Werke Ag

Inventors

• Senger Linda

Classifications

• F16F15/167 Primary

  having an inertia member, e.g. ring · CPC title

• B60K17/22

  characterised by arrangement, location, or type of main drive shafting, e.g. cardan shaft · CPC title

• F16F15/161

  characterised by the fluid damping devices, e.g. passages, orifices (F16F15/162 takes precedence) · CPC title

• F16F2236/08

  Torsion · CPC title

• F16F2238/026

  wound- or coil-like · CPC title