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Electric motor, in particular for the windscreen wiper drive of a motor vehicle, with improved seating for the armature shaft bearing

A technology for electric motors, armature shafts, applied in the direction of shafts and bearings, rigid supports for bearing parts, bearing elements

Inactive Publication Date: 2009-08-19
ROBERT BOSCH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disassembly of rolling bearings requires release of the press fit, which is often accompanied by significant disassembly costs

Method used

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  • Electric motor, in particular for the windscreen wiper drive of a motor vehicle, with improved seating for the armature shaft bearing

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0028] The electric motor 1 shown in the drawing consists of an armature shaft 10 , which is mounted rotatably within a pole housing 19 via a roller bearing 11 and a slide bearing 21 . The rolling bearing 11 consists of a bearing inner ring 12 and a bearing outer ring 13 in addition to the rolling elements. The bearing inner ring 12 is pressed against the armature shaft 10 or is fixed axially by fastening elements. The bearing outer ring 13 is located in a bearing seat, wherein the bearing seat itself is formed by a first half shell 14 and a second half shell 15 .

[0029] The half shells 14 and 15 each extend around the bearing outer ring 13 at an angle of 180°. A radially symmetrical bearing seat is produced by the first half shell 14 and the second half shell 15 , wherein the half shells 14 and 15 surround the rolling bearing 11 over the entire circumference. The first half shell 14 is formed by a section of the transmission housing 16 , so that the transmission housing 1...

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PUM

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Abstract

The invention relates to an electric motor (1), in particular for the windscreen wiper drive of a motor vehicle, comprising an armature shaft (10), which is mounted by means of at least one anti-friction bearing (11). Said bearing has an inner bearing ring (12), joined to the armature shaft (10) and also an outer bearing ring (13), held in a bearing seat, the latter consisting of a first half-shell (14) and a second half-shell (15), which are fitted together with their interiors facing one another to form a closed radially symmetrical bearing seat. The invention thus provides an electric motor (1) for the windscreen wiper drive of a motor vehicle with a simple seating for the anti-friction bearing (11) of the armature shaft (10).

Description

technical field [0001] The invention relates to an electric motor according to the preamble of claim 1 , in particular for driving a windshield wiper for a vehicle. Background technique [0002] Electric motors of the type described above usually drive gears via worms, for example for driving windshield wiper systems, window lifts, seat adjustments or the like. Such electric motors have various bearing arrangements which are used to support the armature shaft both radially and axially. [0003] An electric motor for driving windshield wipers for vehicles is known from laid-open document DE 199 26 171 A1. This motor includes bearings, which are mounted in hard-to-reach housings. In this case the bearing is held axially in the bearing seat by means of positioning elements. This enables the bearing placed on the armature shaft and the armature to be mounted in the bearing seat. The structure of the electric motor and the associated gear housing is multi-part, so that the el...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K5/16H02K5/173H02K7/08H02K7/116
CPCH02K7/083H02K5/1732H02K7/081H02K5/1672F16C35/077F16C2326/09F16C2380/27H02K5/16H02K5/173H02K7/08H02K7/116
Inventor D·劳克M·休斯格斯
Owner ROBERT BOSCH GMBH
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