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Method for adjusting the axial play between a motor armature and a bearing, and seat for an armature shaft

A technology of axial clearance and support structure, which is applied in the direction of sliding contact bearings, casings/covers/supports, electromechanical devices, etc., and can solve problems such as cost

Inactive Publication Date: 2013-11-20
ROBERT BOSCH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage is that the permissible axial bearing play is adjusted during mounting in such a way that the outer disk of the two disks is mounted at a predetermined distance from the fixed bearing by means of a press fit
However, the control of the actual distance between the disc and the fixed bearing after the mounting step is technically very complex and is correspondingly suitable for correcting the position of the disc in the case of too small an axial bearing play

Method used

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  • Method for adjusting the axial play between a motor armature and a bearing, and seat for an armature shaft

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Embodiment Construction

[0031] figure 1 A schematic cross-sectional view of the region of the fixed bearing 50 and the motor armature (not shown) for the throttle valve 100 is shown. The throttle valve is separated from its surroundings by the motor cover 70 and the motor housing 90 or pole head. Furthermore, a commutator 80 and an electric motor (not shown) for operating the throttle valve 100 are arranged inside the throttle valve 100 .

[0032] The armature shaft 30 extends over the entire length of the motor housing 90 and protrudes by a predetermined length from the motor cover 70 , and is accommodated and rotatably mounted in the fixed bearing 50 of the motor cover 70 on the one hand and On the other hand, in a floating bearing (not shown) inside the motor housing 90 . In the region of the free longitudinal end of the armature shaft 30 there is provided a pinion 60 which, in the installed state of the throttle valve 100 , enlarges or reduces the flow passage with a valve (not shown) in the ve...

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Abstract

The invention relates to a method for adjusting the axial play between a motor armature and a bearing (50) that is secured to an armature shaft (30) and for axially securing the motor armature, comprising the following steps : - pressing a first washer (10) onto the armature shaft (30) in the predetermined mounting position of said washer on the armature shaft (30), to form a press-fit, - pressing a spacer sleeve (40) onto the armature shaft (30) to form a press-fit and to bring the spacer sleeve (40) into contact with the first washer (10), - mounting the armature shaft (30) in a second bearing of a motor housing (90), - positioning a motor cover (70), which is provided with the bearing (50), on the armature shaft (30) and securing the motor cover (70) on the motor housing (90), - pressing a second washer (20) onto the armature shaft (30) to form a press-fit and to bring the second washer (30) into contact with the spacer sleeve (40).

Description

technical field [0001] The invention generally relates to a method for adjusting an axial play between an electric motor armature and a bearing fastened on an armature shaft and for axially fixing the electric motor armature. Furthermore, the invention relates to a regulating actuator, such as a throttle valve with an armature shaft, which has a support structure. Background technique [0002] When using an electric motor, a motor armature movable in the axial direction is accommodated and supported in the motor housing by means of an armature shaft, usually by fixed and floating bearings. If an external force now acts in the axial direction of the armature shaft during operation of the motor, the fixed bearing must limit the permissible axial displacement of the armature shaft during operation so that the motor armature is always located in the area of ​​the stator of the motor . [0003] When mounting the fixed bearing on the armature shaft, this has hitherto been achiev...

Claims

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Application Information

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IPC IPC(8): H02K7/08F16C25/02H02K5/167
CPCH02K5/1672
Inventor J·赫普J·阿肖夫S·多施特勒T·埃尔哈特G·罗雷尔
Owner ROBERT BOSCH GMBH
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