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Variable speed drive and method for machining a variable speed drive

A technology of variable speed drive and drive device, which is applied to electromechanical devices, electric components, electrical components, etc., can solve the problems of increased operating noise, roundness deviation, and variation of the armature shaft, and achieve the effect of reducing friction loss.

Inactive Publication Date: 2020-03-13
ROBERT BOSCH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage here is that deviations from the roundness of the armature shaft can occur due to the length of the armature shaft or plastic deformation of the armature shaft
Such deviations from roundness lead, for example, to increased operating noise
In addition, roundness deviations of the armature shaft or armature can also lead to poor contact between the carbon brushes and the commutator due to vibrations
Furthermore, it generally appears to be disadvantageous that the method for producing the axial play of the armature shaft is relatively complex due to the required individual dimensioning of the installation space used by the supply shaft and the subsequent individual length of the armature shaft

Method used

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  • Variable speed drive and method for machining a variable speed drive
  • Variable speed drive and method for machining a variable speed drive
  • Variable speed drive and method for machining a variable speed drive

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Embodiment Construction

[0029] exist figure 1 A variable speed drive 10 is shown, which is used, for example, as part of a convenience drive in a motor vehicle. A convenience drive is to be understood within the scope of the present invention as a seat adjustment drive, a window lift drive, a sliding roof drive or the like, by way of example and without limitation. This convenient drive is characterized in that the element to be adjusted, for example a glass window, a sliding roof, can be moved in different directions.

[0030] The variable-speed drive 10 includes an electric motor 11 which is arranged as a motor 11 with carbon brushes in a pole housing 12 made of metal. The armature shaft 14 of the electric motor 11 , which partially protrudes from the pole housing 12 , protrudes into a transmission housing 15 , which is generally at least two-part and partially made of metal. In order to fasten the electric motor 11 or the pole housing 12 on the transmission housing 15 , the pole housing 12 is sc...

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Abstract

The invention relates to a speed variable driving device (10). The speed variable driving device, particularly as a component providing convenience to the driving device, comprises a motor (11); the motor has an electric pivot (14) and meshing teeth formed on the electric pivot (14); the meshing teeth is meshed with the meshing teeth of a slave member (17), and particularly meshed with the meshing teeth of a forward gear; the electric pivot (14) is supported in at least bearing devices (21,22) in a rotary manner; the electric pivot at least indirectly cooperate with at least one housing member (12,15) in the two axial end portions (25,26) for limiting axial movement of the electric pivot (14) in the longitudinal direction of the electric pivot (14). Compensation members (30;30a;30b) which are partially made of plastic materials are arranged between at least one housing member (12,15) and the end portion of the electric pivot, and the elasticity modulus is decreased through heating the plastic of the compensation members (30;30a;30b).

Description

technical field [0001] The invention relates to a variable speed drive according to the preambles of the two independent claims. The invention also relates to a method for producing a variable speed drive according to the invention. Background technique [0002] A variable speed drive as described in the preambles of the two independent claims is known from DE 10 2006 061 700 A1 of the applicant. A variable speed drive is known as part of a convenience drive in a motor vehicle, which has an electric motor with an armature shaft which protrudes into the transmission housing. The region of the armature shaft provided with toothing meshes with a mating toothing of a spur gear, which acts at least indirectly as a driven element for adjusting, for example, a window pane, a glass roof window or similar elements of a convenient drive. It is typical for such elements to be adjusted that they have to be adjusted in different directions, whereby the electric motor is designed as a r...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K7/08H02K7/116
CPCH02K7/083H02K7/116H02K7/081H02K7/1166
Inventor A.韦尔勒
Owner ROBERT BOSCH GMBH
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