Gear unit of a motor vehicle actuating drive

Patent metadata

Field	Value
Publication number	US-9651135-B2
Application number	US-201414180820-A
Country	US
Kind code	B2
Filing date	Feb 14, 2014
Priority date	Feb 14, 2014
Publication date	May 16, 2017
Grant date	May 16, 2017

Abstract

A gear unit for an actuating drive, in particular a window lifter drive, of a motor vehicle is provided that includes a gear housing and a pivot bolt rotatably fixedly connected thereto for rotatably supporting a gear wheel, in particular of a worm gear, the pivot bolt has a second pivot section, which is adjacent to a first pivot section having a first outer diameter, and which has a free end section on the front, the outer diameter of the second pivot section being smaller than the outer diameter of the first pivot section at least over one part of it pivot section length.

First claim

What is claimed is:

1. A gear unit for an actuating drive of a motor vehicle, the gear unit comprising:
a gear housing;
a pivot bolt rotatably fixedly connected to the gear housing; and
a gear wheel injection molded onto the pivot bolt, the pivot bolt comprising:
a first section; and
a second section adjacent to the first section;

wherein the first section has an outer diameter and has a front free end section;
wherein the second section has an outer diameter being smaller than the outside diameter of the first section at least over one part of the second section length;
wherein the second section has a first section of constant diameter and is widened conically or frustoconically outwardly from the first section to form a conical or frustoconical free end section; and
wherein the conical or frustoconical free end section has a plurality of indented radial notches formed within an axial end surface of the conical or frustoconical free end section in a secant manner.

2. The gear unit according to claim 1 , further comprising axial indentations on the second section.

3. The gear unit according to claim 1 , wherein a number of axial notches that run at least largely in an axial direction are introduced into the second section on a circumferential side.

4. The gear unit according to claim 1 , wherein the second section of the pivot bolt includes a section region which has the outer diameter that is reduced in comparison to the outer diameter of the first section between the first pivot section and the front free end section.

5. The gear unit according to claim 1 , wherein an outer diameter of the front free end section is smaller or at maximum equal to the outer diameter of the first section of the pivot bolt.

6. The gear unit according to claim 1 , wherein the gear wheel is a worm gear.

7. The gear unit according to claim 1 , wherein the outer diameter of the second section is less than the outer diameter of the first section by 20% to 30%.

8. The gear unit according to claim 1 , wherein the first section of the pivot bolt has a circumferential groove.

9. The gear unit according to claim 1 , wherein the radial notches are V-shaped.

Assignees

• Brose Fahrzeugteile

Inventors

• Weigold Thomas
• Kifer Alexander

Classifications

• F16H57/0025

  with gearing elements rigidly connected to a shaft, e.g. securing gears or pulleys by specially adapted splines, keys or methods · CPC title

• F16B21/183

  internal, i.e. with spreading action · CPC title

• E05F15/697

  Motor units therefor, e.g. geared motors · CPC title

• Y10T74/19828

  Worm · CPC title

• F16B21/16

  with grooves or notches in the pin or shaft · CPC title