Drive assembly

Patent metadata

Field	Value
Publication number	US-9821786-B2
Application number	US-201414758310-A
Country	US
Kind code	B2
Filing date	Jan 14, 2014
Priority date	Jan 16, 2013
Publication date	Nov 21, 2017
Grant date	Nov 21, 2017

Abstract

A drive assembly having a motor accommodating bore for an electric motor, the bore being directed perpendicularly into an end face of a block-like accommodating body, and having a motor housing for accommodating a bearing provided for a motor shaft of the electric motor the bearing being fixed in an end-side motor housing section which extends into the motor accommodating bore. The invention provides for the electric motor to be frictionally fixed and centered in the motor accommodating bore by a motor holder that is fastened to the end-side motor housing section and projects into the motor accommodating bore.

First claim

The invention claimed is:

1. A drive assembly, for a slip-controlled brake system, comprising:
a motor location hole for an electric motor, said hole being directed perpendicularly into an end face of a block-shaped mounting body,
a motor housing for accommodating a bearing provided for a motor shaft of the electric motor, said bearing being fixed in an end-side motor housing section which extends as far as the motor location hole,

wherein a motor holder is secured on the end-side motor housing section, said motor holder being recessed into the motor location hole, such that the motor holder fixes the electric motor within the motor location hole,
wherein the motor holder is a holding plate having a radial overlap at an outer circumference of the holding plate relative to an outside diameter of the motor housing, the overlap engaging with an inner wall of the motor location hole by a press fit.

2. The drive assembly as claimed in claim 1 , wherein a further end-side motor housing section, which accommodates the motor shaft in a further bearing, is provided on the opposite end of the electric motor from the motor housing section.

3. The drive assembly as claimed in claim 2 , wherein adjoining the further bearing, the motor shaft carries a commutator, which interacts with a plurality of brushes of a brush carrier plate.

4. The drive assembly as claimed in claim 2 , wherein a fixing cap, which extends into the motor location hole as far as an axial contact with a housing step, is placed over the further end-side motor housing section.

5. The drive assembly as claimed in claim 4 , wherein the fixing cap has an opening in a region of the further end-side motor housing section, into which opening the further bearing projects with the further end-side motor housing section surrounding the further bearing.

6. The drive assembly as claimed in claim 5 , wherein the motor housing section has a radial clearance within the opening provided in the fixing cap, wherein there is no transmission of force to the motor housing section while the fixing cap is being placed on.

7. The drive assembly as claimed in claim 4 , wherein an interspace is provided between an inner wall of the fixing cap and an outer wall of the further motor housing section.

8. The drive assembly as claimed in claim 7 , wherein the interspace extends along the motor housing into a hole section of a mounting body.

9. The drive assembly as claimed in claim 7 , wherein an elastically deformable ring element, in which the motor housing is mounted, is clamped into the interspace.

10. The drive assembly as claimed in claim 5 , wherein at least one of the further bearing and the further end-side motor housing section is accommodated without a clearance in the opening of the fixing cap.

11. The drive assembly as claimed in claim 4 , wherein the fixing cap has, in the contact region of the housing step, a rim, which is directed radially outward and is fixed positively and also nonpositively in the motor location hole by plastic displacement, in the direction of the housing step, of the material of the mounting body adjoining the motor location hole.

12. The drive assembly as claimed in claim 8 , wherein an elastically deformable ring element, in which the motor housing is mounted, is clamped into the interspace.

13. A drive assembly for a slip-controlled brake system, comprising:
a motor location hole for an electric motor, said hole being directed perpendicularly into an end face of a block-shaped mounting body,
a motor housing for accommodating a bearing provided for a motor shaft of the electric motor, said bearing being fixed in an end-side motor housing section which extends as far as the motor location hole,
wherein a motor holder is secured on the end-side motor housing section, said motor holder being recessed into the motor location hole, such that the motor holder fixes the electric motor within the motor location hole, and
wherein the motor holder is an annular disk, which has a collar both on a radial overlap of the annular disk, for fixing in the motor location hole, and on an inner circumference of the annular disk, for fixing on the end-side motor housing section.

14. The drive assembly as claimed in claim 13 , wherein the motor holder is produced by punching and deep drawing a thin sheet.

15. The drive assembly as claimed in claim 13 , wherein the collar provided on the inner circumference of the motor holder in the form of an annular disk is fixed by frictional engagement directly on a projection that surrounds the bearing and forms part of the end-side motor housing section.

16. A drive assembly for a slip-controlled brake system, comprising:
a motor location hole for an electric motor, said hole being directed perpendicularly into an end face of a block-shaped mounting body,
a motor housing for accommodating a bearing provided for a motor shaft of the electric motor, said bearing being fixed in an end-side motor housing section which extends as far as the motor location hole,

wherein a motor holder is secured on the end-side motor housing section, said motor holder being recessed into the motor location hole, such that the motor holder fixes the electric motor within the motor location hole, wherein a further end-side motor housing section, which accommodates the motor shaft in a further bearing, is provided on the opposite end of the electric motor from the motor housing section, and
wherein the further end-side motor housing section is a brush carrier plate accommodating a plurality of brushes in brush holders.

Assignees

• Continental Teves Ag & Co Ohg

Inventors

• Vogel Günther
• Lenz Renè
• Hinz Axel

Classifications

• B60T8/368 Primary

  combined with other mechanical components, e.g. pump units, master cylinders · CPC title

• H02K7/075

  using crankshafts or eccentrics · CPC title

• B60T13/745 Primary

  acting on a hydraulic system, e.g. a master cylinder · CPC title

• F04B17/03

  driven by electric motors · CPC title

• H02K5/1672

  radially supporting the rotary shaft at both ends of the rotor (H02K5/1677 takes precedence) · CPC title