Drive device with overload protection

Patent metadata

Field	Value
Publication number	US-9500236-B2
Application number	US-201414249473-A
Country	US
Kind code	B2
Filing date	Apr 10, 2014
Priority date	Apr 12, 2013
Publication date	Nov 22, 2016
Grant date	Nov 22, 2016

Abstract

A drive device includes a drive device housing with a longitudinal axis, at least one gearing assembly received in the drive device housing, with a gearing housing, which is received in the drive device housing so as to be rotatable about the longitudinal axis thereof, an engagement element received in the drive device housing and connected thereto for rotation therewith with respect to a rotation about the longitudinal axis thereof when torque is transmitted through the engagement element, the engagement element including an end face running substantially orthogonally to the longitudinal axis, which end face is in frictional and, if desired, additionally interlocking engagement with an associated counter end face of the gearing assembly or one of the plurality of gearing assemblies, and a spring, which is received in the drive device housing and prestresses the end face and the counter end face against one another.

First claim

The invention claimed is:

1. A drive device, comprising:
a drive device housing with a longitudinal axis,
at least one gearing assembly received in and completely enclosed by the drive device housing, the at least one gearing assembly including a gearing housing having a counter end face, the gearing housing completely received in the drive device housing so as to be rotatable about the longitudinal axis of the drive device housing,
an engagement element received in the drive device housing and connected thereto for rotation therewith with respect to a rotation about its longitudinal axis when torque is transmitted through the engagement element, said engagement element comprising an end face running substantially orthogonally to the longitudinal axis, wherein the end face of the engagement element is in frictional engagement with the counter end face of the gearing housing, and
a spring, which is received in the drive device housing and prestresses the end face and the counter end face against one another.

2. A drive device according to claim 1 , wherein the spring is supported at one end on the drive device housing or a part connected thereto in an operationally secure manner and, at the other end, is supported on the engagement element.

3. A drive device according to claim 1 , wherein the spring is supported at one end on the drive device housing or a part connected thereto in an operationally secure manner and, at the other end, is supported on the gearing housing.

4. A drive device according to claim 3 , wherein the gearing housing can be displaced relative to at least one part of remaining components of the gearing assembly in a direction of the longitudinal axis.

5. A drive device according to claim 4 , wherein the at least one gearing assembly is displaceable as a unit relative to the drive device housing in the direction of the longitudinal axis.

6. A drive device according to claim 1 , wherein a component, which is different from the gearing housing, of the at least one gearing assembly can be displaced relative to at least one part of remaining components of the at least one gearing assembly in the direction of the longitudinal axis.

7. A drive device according to claim 1 , wherein the at least one gearing assembly includes a plurality of gearing assemblies, and the counter end face is configured on the gearing assembly located closest to an output shaft of the drive device, and on the side thereof located closer to the output shaft of the drive device.

8. A drive device according to claim 1 , wherein the at least one gearing assembly includes a plurality of gearing assemblies, and the counter end face is arranged between two of the plurality of gearing assemblies.

9. A drive device according to claim 1 , wherein the end face and the counter end face are configured with elevations and depressions, which have mutually cooperating oblique faces.

10. A drive device according to claim 1 , wherein the at least one gearing assembly includes a plurality of gearing assemblies, and the spring is arranged between two of the gearing assemblies.

11. A drive device according to claim 1 , wherein the at least one gearing assembly is a planetary gearing or an eccentric gearing or a wobble gearing or a cycloidal gearing or a shaft ring gearing.

12. A drive device according to claim 1 , wherein the end face of the engagement element is in frictional and interlocking engagement with the associated counter end face.

Assignees

• Stabilus Gmbh

Inventors

• Müller Thomas
• Wieland Mathias
• Hillen Jörg

Classifications

• F16D43/2024

  the axially moving part being coaxial with the rotation, e.g. a gear with face teeth · CPC title

• E05Y2900/546

  Tailboards, tailgates or sideboards opening upwards · CPC title

• F16H35/10

  Arrangements or devices for absorbing overload or preventing damage by overload · CPC title

• F16D7/044

  the axially moving part being coaxial with the rotation, e.g. a gear with face teeth · CPC title

• F16D7/024 Primary

  with axially applied torque limiting friction surfaces · CPC title