Gearing having a first and a second housing part

Patent metadata

Field	Value
Publication number	US-10240669-B2
Application number	US-201414906127-A
Country	US
Kind code	B2
Filing date	Jun 10, 2014
Priority date	Jul 16, 2013
Publication date	Mar 26, 2019
Grant date	Mar 26, 2019

Abstract

A gearing is described as having a first and a second housing part, an intermediate shaft of the gearing being supported via two bearings in a bushing accommodating the bearings, the bushing centering the first housing part with respect to the second housing part.

First claim

The invention claimed is:

1. A gearing, comprising:
a first housing part;
a second housing part;
a bushing having an inner sleeve section and an outer sleeve section;
a plurality of bearings accommodated in the bushing;
an intermediate shaft supported via the bearings, wherein:
the bushing centers the first housing part with respect to the second housing part,
the inner sleeve section accommodates a first of the bearings of the intermediate shaft in a first axial section and a second of the bearings of the intermediate shaft in a second axial section;

a web section disposed axially between the first and second axial sections, wherein a smallest radial clearance of the web section is smaller than a smallest radial clearance of the first or second axial section sections; and
support ribs via which the inner and the outer sleeve sections are connected, the support ribs being set apart from each other in a circumferential direction, a first one of the support ribs being at least one of axially shorter and shorter in the circumferential direction than a second one of the support ribs.

2. A gearing, comprising:
a first housing part;
a second housing part;
a bushing having an inner sleeve section and an outer sleeve section;
a plurality of bearings accommodated in the bushing;
an intermediate shaft supported via the bearings, wherein:
the bushing centers the first housing part with respect to the second housing part,
the inner sleeve section accommodates a first of the bearings of the intermediate shaft in a first axial section and a second of the bearings of the intermediate shaft in a second axial section;

a web section disposed axially between the first and second axial sections, wherein a smallest radial clearance of the web section is smaller than a smallest radial clearance of the first or second axial section sections; and
support ribs via which the inner and the outer sleeve sections are connected, the support ribs being set apart from each other in a circumferential direction, a first one of the support ribs being at least one of axially shorter and shorter in the circumferential direction than a second one of the support ribs;
wherein one of:
the support ribs include first support ribs and second support ribs, the first support ribs being at least one of axially shorter and shorter in the circumferential direction than second support ribs, individual ones of the first support ribs being situated in alternation one behind the other in the circumferential direction, and
individual ones of the second support ribs being situated in front of and behind a group of the first support ribs in the circumferential direction in each case.

3. The gearing as recited in claim 2 , wherein at least one of the second support ribs includes a contact pressure surface for a tool for axially pushing the second ribs out of a die-cast mold.

4. The gearing as recited in claim 2 , wherein the first support ribs are set apart from each other at first regular intervals, and the second support ribs are set apart from each other at second regular intervals.

5. The gearing as recited in claim 1 , further comprising:
screws for forming a screw connection that connects the first and the second housing parts to each other, the screw connection being situated outside the bushing.

6. The gearing as recited in claim 1 , wherein the outer sleeve section of the bushing rests against receiving regions of the first and second housing parts.

7. The gearing as recited in claim 1 , wherein:
the outer sleeve section of the bushing includes a first axial section that is developed as an insertion guide region,
the outer sleeve section of the bushing includes a second axial section that is developed as a press-fit region, and
an axial direction corresponds to an intermediate shaft axis.

8. The gearing as recited in claim 1 , wherein the bearings include tapered roller bearings.

9. The gearing as recited in claim 8 , wherein the tapered roller bearings are in one of an O-arrangement, an X-arrangement, and a tandem arrangement.

10. The gearing as recited in claim 1 , wherein the intermediate shaft is connected to a first toothed part in a manner that prevents rotation or it has a corresponding toothing region, so that a first axial bearing is axially delimited by the toothed part or toothing section, and wherein a further toothed part is connected to the intermediate shaft in a torsionally fixed manner on the axial side of the bushing facing away therefrom, which axially delimits the other bearing, the further toothed part being axially delimited by a securing ring.

11. A gearing, comprising:
a first housing part;
a second housing part;
a bushing having an inner sleeve section and an outer sleeve section;
a plurality of bearings accommodated in the bushing;
an intermediate shaft supported via the bearings, wherein:
the bushing centers the first housing part with respect to the second housing part,
the inner sleeve section accommodates a first of the bearings of the intermediate shaft in a first axial section and a second of the bearings of the intermediate shaft in a second axial section;

a web section disposed axially between the first and second axial sections, wherein a smallest radial clearance of the web section is smaller than a smallest radial clearance of the first or second axial section sections; and
support ribs via which the inner and the outer sleeve sections are connected, the support ribs being set apart from each other in a circumferential direction, a first one of the support ribs being at least one of axially shorter and shorter in the circumferential direction than a second one of the support ribs;
wherein at least one of:
the intermediate shaft is provided with a bevel pinion toothing or connected thereto in a torsionally fixed manner, and the intermediate shaft is provided with or connected to a helically-cut spur gear,
the bevel pinion toothing is in engagement with a bevel gear supported in the second housing part via bearings accommodated there,
the first housing part is connected to a motor housing, a rotor shaft being supported via bearings accommodated in the motor housing, the rotor shaft being connected to an inputting toothed part of the gearing in a torsionally fixed manner and the inputting toothed part being radially surrounded by the first housing part,
the toothed part connected to the intermediate shaft in a torsionally fixed manner is in engagement with the inputting toothed part connected to the rotor shaft,
the bushing is press-fit into a receiving region of the first housing part and into a receiving region of the second housing part disposed coaxially thereto,
the first and the second housing parts are sealingly connected,
an annular space region for holding a bonding agent is situated between one of the housing parts and the bushing, and
the space region is delimited by a depression in the bushing and the receiving region of the housing part for the bushing.

Assignees

• Sew Eurodrive Gmbh & Co

Inventors

• Tegeltija Miki

Classifications

• F16C2361/61

  Toothed gear systems, e.g. support of pinion shafts · CPC title

• F16C19/548

  in O-arrangement · CPC title

• F16H57/038

  Gearboxes for accommodating bevel gears (F16H57/037 takes precedence) · CPC title

• F16H1/14

  comprising conical gears only · CPC title

• F16C35/077

  between housing and outer race ring · CPC title