Multicomponent gear

Patent metadata

Field	Value
Publication number	US-9835238-B2
Application number	US-201514594605-A
Country	US
Kind code	B2
Filing date	Jan 12, 2015
Priority date	Jan 23, 2014
Publication date	Dec 5, 2017
Grant date	Dec 5, 2017

Abstract

The invention relates to a multicomponent gear having an outer part with a toothed rim, an inner part, and a connecting part made of plastic for the positive locking connection of the inner part and the outer part. The outer part is thereby arranged on an outer circumferential surface and the inner part is arranged on an inner circumferential surface of the connecting part. The connecting part is additionally provided with a plurality of indentations on two opposite primary surfaces lying outside and perpendicular to a rotational axis. The invention is thereby characterized in that the indentations in the first primary surface of the connecting part are, in comparison to the indentations in the second primary surface of the connecting part, arranged offset to each other radially and/or in the circumferential direction to the rotational axis.

First claim

We claim:

1. A multicomponent gear comprising:
an outer part with a toothed rim,
an inner part,
a connecting part made of plastic for the positive locking connection of the inner part and the outer part, wherein the outer part is arranged on an outer circumferential surface and the inner part is arranged on an inner circumferential surface of the connecting part and the connecting part is additionally provided with a plurality of indentations on each of a first and second opposite primary surface lying outside and perpendicular to a rotational axis,
and wherein:
the indentations in the first primary surface of the connecting part are, in comparison to the indentations in the second primary surface of the connecting part, arranged offset to each other in the circumferential direction to the rotational axis, and
at least one part of the indentations on the first primary surface or on the second primary surface extend across more than half of the width of the connecting part between the first primary surface and the second primary surface and are formed pot-shaped and having a bottom, respectively.

2. The multicomponent gear of claim 1 , wherein the indentations are arranged on the first primary surface relative to the indentations in relation to the second primary surface of the connecting part and to each other such that a section lying parallel to the rotational axis or a section concentric to the rotational axis through the multicomponent gear shows a meandering pattern or at least an approximately meandering patterned course of the connecting part.

3. The multicomponent gear of claim 1 , wherein the outer part is formed of plastic.

4. The multicomponent gear of claim 1 , wherein the inner part consists of metal and is either a metal ring or a metal shaft.

5. The multicomponent gear of claim 1 , wherein the first primary surface as well as the second primary surface is provided with a plurality of indentations, which run in a single row spaced apart from each other on each of the two primary surfaces at an identical radial distance from the rotational axis.

6. The multicomponent gear of claim 1 , wherein the outer part has an inner circumferential surface with a ribbing or toothing structure.

7. The multicomponent gear of claim 1 , wherein the inner part has at least one annular recess facing the connecting part, into which recess the connecting part engages with an annular protruding flange.

8. The multicomponent gear of claim 1 , wherein the connecting part has on at least one of the two primary surfaces thereof multiple gating points, which are arranged respectively between two of the indentations.

9. The multicomponent gear of claim 1 , wherein the inner circumferential surface as well as the outer circumferential surface of the connecting part have, when viewed in cross section, a width, which corresponds to the width of the multicomponent gear or at least approximates the width of the multicomponent gear.

10. The multicomponent gear of claim 1 , wherein the first primary surface as well as the second primary surface of the connecting part are formed as concave.

Assignees

• Ims Gear Se & Co Kgaa

Inventors

• Oberle Stephan
• Bernhard Markus
• Seidel Manuel
• Kutscher Christian
• Stoppel Eugen

Classifications

• F16H55/06 Primary

  Use of materials; Use of treatments of toothed members or worms to affect their intrinsic material properties · CPC title

• F16H2055/065

  Moulded gears, e.g. inserts therefor · CPC title

• F16H55/17 Primary

  Toothed wheels (worm wheels F16H55/22; chain wheels F16H55/30) · CPC title