Actuator having a sensor device for sensing angular positions of a rotating component, and electric drive system having an actuator of this type

Patent metadata

Field	Value
Publication number	US-12486895-B2
Application number	US-202218280087-A
Country	US
Kind code	B2
Filing date	Mar 7, 2022
Priority date	Mar 10, 2021
Publication date	Dec 2, 2025
Grant date	Dec 2, 2025

Abstract

An actuator for actuating a shift element in a transmission of a vehicle, particularly of a utility vehicle, includes a sensor device for detecting angular positions of a rotating component, for example, a shaft in an electric drive for a vehicle. The sensor device includes an annular encoder magnet fastened to a support pin supported on a front side of the rotating component so as to be fixed with respect to rotation relative to it such that the annular encoder magnet at least partially surrounds the support pin. The annular encode magnet is mounted on the support pin as a molded encoder magnet component.

First claim

The invention claimed is:

1 . An actuator configured to actuate a shift element in a transmission of a vehicle, comprising:
a sensor device configured to detect angular positions of a rotating component, wherein the sensor device comprises:
a support pin supported on a front side of the rotating component so as to be fixed with respect to rotation relative to it; and
an annular encoder magnet fastened to the support pin such that the annular encoder magnet at least partially surrounds the support pin,
wherein the annular encoder magnet is mounted on the support pin as a molded encoder magnet component,
wherein the support pin has a diameter which is less than 4 mm.

2 . The actuator according to claim 1 , wherein the support pin has a diameter enlargement in axial direction in portions thereof.

3 . The actuator according to claim 1 , wherein the support pin has a diameter which is less than 4 mm.

4 . The actuator according to claim 1 , wherein the actuator comprises the support pin.

5 . The actuator according to claim 4 , wherein the support pin is received in a bore hole of the rotating component.

6 . The actuator according to claim 4 , wherein the support pin is formed integral with the rotating component.

7 . The actuator according to claim 1 , wherein the molded encoder magnet component is mounted on a sleeve-shaped connection element arranged between the annular encoder magnet and the support pin.

8 . An electric drive comprising:
an electric motor; and a transmission configured to shift a speed of the electric motor which is arranged in an actuator configured to actuate a shift element of the transmission comprising:
a sensor device configured to detect angular positions of a rotating component, wherein the sensor device comprises:
a support pin supported on a front side of the rotating component so as to be fixed with respect to rotation relative to it; and
an annular encoder magnet fastened to the support pin such that the annular encoder magnet at least partially surrounds the support pin,
wherein the annular encoder magnet is mounted on the support pin as a molded encoder magnet component,
wherein the support pin has a diameter which is less than 4 mm.

9 . The actuator according to claim 1 , wherein the vehicle is a utility vehicle.

10 . The actuator according to claim 1 , wherein the rotating component is a shaft in an electric drive for the vehicle.

11 . The actuator according to claim 1 , wherein the diameter is less than 2.5 mm.

Assignees

• Zahnradfabrik Friedrichshafen

Inventors

• Hahn Stephan
• Böhm Christopher

Classifications

• H02K2211/03

  Machines characterised by circuit boards, e.g. pcb · CPC title

• G01D5/14

  influencing the magnitude of a current or voltage · CPC title

• F16H59/40

  Output shaft speed · CPC title

• H02K11/215

  Magnetic effect devices, e.g. Hall-effect or magneto-resistive elements · CPC title

• H01F41/0266

  Moulding; Pressing (H01F41/0273 takes precedence; hard magnetic particles H01F1/06, H01F1/11) · CPC title