Modular electric motor drive unit

• US 7,847,449 B2
• Filed: 04/28/2005
• Issued: 12/07/2010
• Est. Priority Date: 05/03/2004
• Status: Active Grant

• Current Assignee: Robert Bosch GmbH
• Original Assignee: Robert Bosch GmbH
• Inventors: Schwendemann, Franz, Oberle, Hans-Juergen, Merkelbach, Uwe, Scheer, Dieter
• Primary Examiner(s): Leung; Quyen
• Assistant Examiner(s): Andrews; Michael
• Application Number:
  US11/579,517
• Publication Number:
  US 20070267923A1
• Time in Patent Office: 2,049 Days
• Field of Search: 310/42, 310/51, 310/85, 310/89, 310/91, 310/75.R, 310/83, 310/90, 310/98, 310/99, 310/154.08, 174/50, 174/520, 744/25
• US Class Current: 310/89
• CPC Class Codes: H02K 7/1166 comprising worm and worm-wheel structural association with bearings specially adapted for worm gear drives H02K7/081

Abstract

An electromotor for regulating a drive in a motor vehicle. The electromotor includes an armature spindle mounted in a pole housing that includes a shell. At least on one front side of the shell a bearing cover is coupled thereon to accommodate an armature spindle bearing. The electromotor also includes a radial molding formed on the pole housing that receives a guide track of a gear assembly housing via radial insertion to fasten the electromotor to the gear assembly housing without the use of additional fasteners.

Claims

1. An electromotor for regulating a drive in a motor vehicle, comprising:

an armature spindle mounted in a pole housing, wherein the pole housing comprises a shell, and wherein at least on one front side of the shell a bearing cover is coupled thereon to accommodate an armature spindle bearing; and

a radial molding formed on the pole housing that receives a guide track of a gear assembly housing via radial insertion to fasten the electromotor to the gear assembly housing;

wherein the bearing cover is formed as one piece with the shell of the pole housing and comprises an axial central peg that tapers inwardly extending in a direction from the radial molding towards the gear assembly housing when the electromotor is fastened to the gear assembly housing.

2. An electromotor according to claim 1, wherein the radial molding is formed on the bearing cover or on the shell of the pole housing.

3. An electromotor according to claim 1, wherein the bearing cover has a central opening through which the armature spindle or a gear assembly shaft that meshes with the spindle engages.

4. An electromotor according to claim 1, wherein the radial molding is formed as a rotating collar.

5. An electromotor according to claim 1, wherein the radial molding is formed as a folded double sheet metal.

6. An electromotor according to claim 1, wherein the radial molding has an outside diameter smaller than an outside diameter of the pole housing shell.

7. An electromotor according to claim 1, wherein the electromotor is secured from turning by recesses designed on the radial molding, in which material of the gear assembly housing or of an attachment flange meshes.

8. An electromotor according to claim 1, wherein the radial molding is formed as radially opposing bridges.

9. An electromotor according to claim 1, wherein the pole housing shell is double walled in the embodiment.

10. An electromotor according to claim 1, wherein the bearing cover has an axial centering peg to engage a corresponding counter formation of the gear assembly housing or an attachment flange.

11. An electromotor according to claim 1, wherein in addition to the radial molding, axially displaced radial attachment plates are formed on the pole housing and having receptacles for fasteners, with which the electromotor can be attached to the attachment flange.

12. An electromotor according to claim 1, having an attachment flange which has receptacles for fasteners for the purpose of mounting it on a motor vehicle part, wherein a centering peg is centered into a counter receptacle of an attachment flange, and the electromotor is attached to the attachment flange by means of fasteners which encompass an axial molding.

13. An electromotor for regulating a drive in a motor vehicle, comprising:

an armature spindle mounted in a pole housing, wherein the pole housing comprises a shell, and wherein on a first front side of the shell a first bearing cover is formed as one piece with the shell and arranged to accommodate an armature spindle bearing, and on a second side of the shell a second bearing cover is positioned thereon; and

a radial molding formed on the pole housing that receives a guide track of a gear assembly housing via radial insertion to fasten the electromotor to the gear assembly housing, wherein an outside diameter of the radial molding is larger than areas of the first bearing cover immediately adjacent in an axial direction.