Drive device

Patent metadata

Field	Value
Publication number	US-9605464-B2
Application number	US-201214343842-A
Country	US
Kind code	B2
Filing date	Sep 5, 2012
Priority date	Sep 12, 2011
Publication date	Mar 28, 2017
Grant date	Mar 28, 2017

Abstract

A drive device, comprising a first housing part and a second housing part which can be displaced with respect thereto, and comprising a motor assembly, which comprises a rotor, two mounting elements and two permanent magnet shells, and if desired comprising a transmission assembly and/or a sensor unit associated with the motor transmission.

First claim

The invention claimed is:

1. A drive device, comprising:
a first housing part having a connector configured to connect to one of a stationary base part and a movable component,
a second housing part arranged substantially coaxial with the first housing part, configured to connect to the respective other of the stationary base part and the movable component, and directly or indirectly displaceably guided on the first housing part in an axial direction relative thereto, and
a drive unit received in the first housing part and comprising a motor assembly for bringing about a relative displacement movement of the first housing part and the second housing part,
the motor assembly comprising a rotor having a rotor shaft, two mounting elements for mounting the two ends of the rotor shaft, and two permanent magnet shells held on the mounting elements,
wherein the motor assembly is received directly in the first housing part, and the first housing part is made of a magnetisable material at least in a length portion associated with the motor assembly,
wherein at least one of the mounting elements comprises a holding recess holding at least one of the permanent magnet shells, and a wedge face cooperating with an associated counter wedge face on an axial longitudinal end of the at least one permanent magnet shell to hold the at least one permanent magnet shell in a defined radial position on the mounting element, and
wherein the wedge face is inclined such that a radially outer edge of the wedge face is closer to the other respective mounting element than a radially inner edge of the wedge face extends increasingly radially outwards in a direction pointing towards a respective other axial longitudinal end of the at least one permanent magnet shell.

2. The drive device according to claim 1 ,
wherein at least one of the mounting elements comprises at least one axial shoulder that projects in between the permanent magnet shells.

3. The drive device according to claim 1 , wherein the holding recess and the wedge face are on an end face of the at least one mounting element.

4. The drive device according to claim 1 , wherein the holding recess and the wedge face cooperate in an interlocking manner, at least in the radial direction, with a permanent magnet shell associated therewith.

5. The drive device according to claim 1 ,
further comprising a compensation element that is resiliently compressible in the axial direction and is provided on at least one axial longitudinal end of the at least one permanent magnet shell between the permanent magnet shell and the mounting element.

6. The drive device according to claim 5 ,
wherein the compensation element is in the form of a ring extending over the entire circumference.

7. The drive device according to claim 6 ,
wherein two adjacent undulating portions of the compensation element are connected by means of a circumferential portion of the ring that projects in the radial direction over circumferential portions of the ring that are adjacent thereto.

8. The drive device according to claim 1 ,
wherein a damping element is associated with at least one mounting element.

9. The drive device according to claim 1 ,
wherein electrical connecting lines for the motor assembly are led away from the drive device in an axial or radial direction.

10. The drive device according to claim 1 ,
wherein at least one of the permanent magnet shells comprises at least two permanent magnet elements.

11. The drive device according to claim 1 ,
wherein the drive unit further comprises a transmission assembly connected to an output side of the motor assembly, the relative displacement movement of the first housing part and the second housing part being derived from a rotational movement of an output shaft of the transmission assembly, and
wherein the mounting element of the motor assembly closest to the transmission assembly simultaneously forms a housing cover of the transmission assembly.

12. The drive device according to claim 11 ,
wherein the internal diameter of a central opening, for passing the rotor shaft through, of the mounting element closest to the transmission assembly is dimensioned at least as large as the external diameter of an input pinion of the transmission assembly.

13. The drive device according to claim 11 ,
wherein a damping element is provided on the end of the transmission assembly remote from the motor assembly.

14. The drive device according to claim 11 ,
wherein the motor assembly further comprises a brush-commutator arrangement,
wherein the brush-commutator arrangement is arranged on the side of the motor assembly facing the transmission assembly.

15. The drive device according to claim 11 ,
wherein the motor assembly further comprises a sensor unit having a sensor sub-unit fixed to the rotor and a sensor sub-unit fixed in an axial recess of one of the mounting elements.

16. The drive device according to claim 15 ,
wherein the sensor unit is arranged on the end of the motor assembly remote from the transmission assembly.

17. The drive device according to claim 15 ,
wherein the sensor unit is arranged between the motor assembly and the transmission assembly.

18. The drive device according to claim 15 ,
wherein the sensor sub-unit fixed in the axial recess of one of the mounting elements is arranged radially outside the sensor sub-unit fixed to the rotor.

Assignees

• Kessler Jürgen
• Ritter Andreas
• Neuhardt Volker
• Mazepa Sergei
• Kessler Gisela Ursula
• Stabilus Gmbh

Inventors

• Kessler Jürgen
• Ritter Andreas
• Neuhardt Volker
• Mazepa Sergei

Classifications

• E05F15/60 Primary

  using electrical actuators · CPC title

• E05Y2201/462

  Electromagnets · CPC title

• H02K11/215

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

• Y10T74/18568

  Reciprocating or oscillating to or from alternating rotary · CPC title

• E05Y2900/546

  Tailboards, tailgates or sideboards opening upwards · CPC title