Motor-transmission arrangement for an adjusting device for adjusting two components adjustable relative to each other

Patent metadata

Field	Value
Publication number	US-10965187-B2
Application number	US-201916276874-A
Country	US
Kind code	B2
Filing date	Feb 15, 2019
Priority date	Feb 19, 2018
Publication date	Mar 30, 2021
Grant date	Mar 30, 2021

Abstract

A motor-transmission arrangement for an adjusting device for adjusting two components adjustable relative to each other can include a planetary gear system having a planetary carrier, a planetary gear with planetary gear toothing and which is rotatably mounted in the planetary carrier and with a ring gear with an internal toothing which engages with the planetary gear toothing. An electric motor can have a motor shaft which can be rotated about a motor shaft axis, which shaft interacts with the planetary gear system, and a housing which is closed with first and second housing covers in which the motor shaft is mounted via a first bearing section and a second bearing section.

First claim

The invention claimed is:

1. A motor-transmission arrangement, comprising:
a planetary gear system comprising:
a planetary carrier;
a planetary gear mounted for rotation in the planetary carrier about a planetary gear axis (A p ) and comprising a planetary gear toothing;
a ring gear having ring gear internal toothing which engages with the planetary gear toothing; and

an electric motor comprising:
a motor shaft, which can be rotated about a motor shaft axis and which interacts with the planetary gear system;
a motor housing comprising a first motor housing cover, wherein the first motor housing cover faces the planetary gear system;

wherein the motor shaft is mounted in the first motor housing cover by a first bearing section and also in the motor housing by a second bearing section;
wherein the motor housing of the electric motor further comprises a second motor housing cover with which the motor housing is closed, and the motor shaft is mounted in the second motor housing cover by the second bearing section; and
wherein the planetary carrier abuts against the first housing cover with an abutting surface, and wherein neither the planetary gear nor the planetary gear axis protrudes beyond the abutting surface.

2. The motor-transmission arrangement according to claim 1 , wherein the first bearing section, the second bearing section, or both the first bearing section and the second bearing section, comprise a roller bearing for radial and axial mounting of the motor shaft.

3. The motor-transmission arrangement according to claim 2 , wherein the first motor housing cover is injection-molded around the roller bearing.

4. The motor-transmission arrangement according to claim 1 , wherein the ring gear is connected in a rotationally fixed manner to the first motor housing cover.

5. The motor-transmission arrangement according to claim 2 , wherein the motor shaft has a motor shaft toothing which is directly arranged on the motor shaft and which engages with the planetary gear toothing.

6. The motor-transmission arrangement according to claim 5 , wherein the motor shaft toothing (has an outer motor shaft toothing diameter and the motor shaft has a first motor shaft diameter, at least in a first shaft section following the motor shaft toothing, wherein the motor shaft toothing diameter is smaller than or equal to the first motor shaft diameter.

7. The motor-transmission arrangement according to claim 6 , wherein the motor shaft has a second shaft section having a second shaft diameter which is smaller than the first shaft diameter.

8. The motor-transmission arrangement according to claim 7 , wherein the roller bearing is arranged in the first shaft section.

9. The motor-transmission arrangement according to claim 1 , wherein the motor shaft has a first motor shaft portion and a second motor shaft portion, which are connected in a rotationally fixed manner, wherein the first motor shaft portion has a motor shaft toothing which engages with the planetary gear toothing.

10. The motor-transmission arrangement according to claim 9 , wherein the first bearing section is arranged on the first motor shaft portion.

11. The motor-transmission arrangement according to claim 9 , wherein the first bearing section is arranged on the second motor shaft portion.

12. The motor-transmission arrangement according to claim 11 , wherein the roller bearing is arranged in the first motor shaft portion and a spacer sleeve is provided between the roller bearing and the ring gear.

13. The motor-transmission arrangement according to claim 1 , wherein the planetary gear system is configured as a helical wheel planetary gear system, wherein the planetary gear is mounted in the planetary carrier for rotation about a planetary gear axis and the planetary gear axis extends askew to a planetary carrier axis.

14. The motor-transmission arrangement according to claim 1 , wherein the first motor housing cover is completely surrounded and the ring gear is at least partially surrounded by the housing.

15. A motor-transmission arrangement, comprising:
a planetary gear system comprising:
a planetary carrier;
a planetary gear mounted for rotation in the planetary carrier and comprising a planetary gear toothing;
a ring gear having ring gear internal toothing which engages with the planetary gear toothing; and

an electric motor comprising:
a motor shaft, which can be rotated about a motor shaft axis and which interacts with the planetary gear system;
a motor housing comprising a first motor housing cover, wherein the first motor housing cover faces the planetary gear system; and

wherein the motor shaft is mounted in the first motor housing cover by a first bearing section and also in the motor housing by a second bearing section;
wherein the motor housing of the electric motor further comprises a second motor housing cover with which the motor housing is closed, and the motor shaft is mounted in the second motor housing cover by the second bearing section;
wherein the motor shaft has a first motor shaft portion and a second motor shaft portion, which are connected in a rotationally fixed manner, wherein the first motor shaft portion has a motor shaft toothing which engages with the planetary gear toothing, and wherein the first bearing section is arranged on the first motor shaft portion.

Assignees

• Ims Gear Se & Co Kgaa

Inventors

• Albert Simon
• Kieninger Matthias

Classifications

• F16H57/082

  Planet carriers · CPC title

• F16H1/28 Primary

  with gears having orbital motion · CPC title

• E05Y2900/548

  Trunk lids · CPC title

• E05Y2900/546

  Tailboards, tailgates or sideboards opening upwards · CPC title

• E05Y2201/72

  Planetary gearing · CPC title