Armature for an electric motor for driving a starter device

A technology for starting devices and electric motors, which is applied to the starting devices with mechanical power storage, the starting of motors for engines, the starting of engines, etc., which can solve the problems of complex structure and changing torque of multi-plate clutches, and achieve a simple structure. , The effect of simplifying the installation

Inactive Publication Date: 2012-07-04
ROBERT BOSCH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This previously known embodiment is structurally very complex due to the multi-plate clutch and changes the corresponding transmissible torque

Method used

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  • Armature for an electric motor for driving a starter device
  • Armature for an electric motor for driving a starter device
  • Armature for an electric motor for driving a starter device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0031] figure 1 Firstly, a starter device 10 known from the prior art is shown in longitudinal section.

[0032] This starting device 10 has, for example, a starter motor 13 and a pre-engagement actuator 16 (eg relay, starter relay). The starter motor 13 and the electric pre-engagement actuator 16 are fixed on a common drive end bearing cap 19 . The starter motor 13 is functionally used to drive the starter pinion 22 when the starter pinion 22 meshes into a ring gear 25 of the internal combustion engine (not shown here).

[0033]The starter motor 13 has a pole tube 28 as a housing, which supports on its inner circumference a plurality of pole shoes 31 , which are each wound by a field winding 34 . The pole piece 31 in turn surrounds an armature 37 which has an armature core 43 formed from laminations 40 and an armature winding 49 arranged in slots 46 . The armature core 43 is pressed against the drive shaft 44 . Furthermore, a commutator 52 is mounted on the end of the dri...

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PUM

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Abstract

The invention relates to an armature for an electric motor for driving a starter device of a combustion engine. The armature comprises an armature pinion which can be rotatably contained on an armature shaft and used for driving a middle transmission mechanism disposed at rear, and an armature iron core which is disposed on the armature shaft and has an armature winding. According to the invention, the armature pinion is positioned on the armature shaft along an axial direction, and a sliding clutch is disposed between the armature pinion and the armature shaft. The armature pinion and the armature pinion edge interact with a friction piece, a disc and a compression spring, forming the sliding clutch which slides when reaching to or exceeding a maximum torque limit Mmax determined by the structure. Furthermore, the armature pinion can be replaced by another armature pinion with different numbers of pinions without replacing the whole armature. Accordingly, gear ratio of a starter device can easily correspond to different demands.

Description

technical field [0001] The invention relates to an armature for an electric motor for driving a starter of an internal combustion engine. Background technique [0002] Internal combustion engines generally cannot be started by their own power, but require a separate starter device which provides the mechanical initial energy necessary for the starting process. [0003] Currently, electric starters with a rotor and a stator are generally used, which are powered by a suitable power source. The starter pinion is usually rigidly connected to the rotor shaft of the electric motor, for example pressed onto it or formed in one piece with it. In contrast to the current supply to the rotor, usually via brushes and a commutator, the stator can be embodied with windings and / or with permanent magnets. In order to increase the starting torque, an intermediate transmission, in particular a planetary gear, can be provided. The armature pinion then drives the actual starter pinion via an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K7/108H02K7/10
CPCH02K13/006H02K7/118H02K7/108F02N15/025F02N11/00F02N15/00
Inventor P·哈拉斯
Owner ROBERT BOSCH GMBH
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