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Brush motor

A brushed motor and motor housing technology, applied in the mechanical field, can solve the problems of unqualified test, large range and high peak value, and achieve the effect of ensuring performance and controlling electromagnetic interference.

Inactive Publication Date: 2021-04-13
GUANGZHOU GRG METROLOGY & TEST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the embodiments of the present invention is to solve the problem that the existing vehicle-mounted DC brushed motor will generate a common-mode interference signal with a wide frequency band when doing conduction emission (including voltage method, current method) and radiation emission. The frequency spectrum presents the characteristics of large range, instability, and high peak value, which leads to the failure of the test and the difficulty of rectification. After the rectification is completed, it is also difficult to integrate measures for mass production.

Method used

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Embodiment Construction

[0016] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0017] DC brushed motors are widely used in automobiles to achieve various functions required during the use of automobiles. Most of the functions of wipers, electric windows, electric sunroofs, electric seats, electric trunks, electric door locks, electric rearview mirrors and many other parts of the car are realized by using DC brushed motors as actuators.

[0018] The advantage of the brushed motor is that the structure is relatively simple, the cost is low...

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Abstract

The invention discloses a brush motor, which comprises a motor shell, a motor coil and a filter circuit structure, and is characterized in that the motor shell is a shell structure with an internal space, the internal space of the motor shell comprises a motor part and a circuit part, the motor coil is arranged in the motor part, the filter circuit structure is arranged in the circuit part, and a shielding plate is arranged between the motor part and the circuit part. Through the shielding plate, an internal shielding compartment is provided for the filter circuit, the due performance of the filter circuit is ensured to a great extent, and electromagnetic interference generated to the outside when the motor works is effectively controlled.

Description

technical field [0001] The invention relates to the mechanical field, in particular to a brushed motor. Background technique [0002] The existing vehicle-mounted DC brushed motor has a simple structure. When the existing vehicle-mounted DC brushed motor is conducting conduction emission (including voltage method, current method) and radiation emission, it will generate common-mode interference signals with a wide frequency band. In the test spectrum The characteristics of large-scale, unstable, and high peaks in the test result in unqualified tests, and it is difficult to rectify and reform. After the rectification is completed, it is also difficult to integrate measures for mass production. Contents of the invention [0003] The technical problem to be solved by the embodiments of the present invention is to solve the problem that the existing vehicle-mounted DC brushed motor will generate a common-mode interference signal with a wide frequency band when doing conduction...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K23/66H02K11/02H02K11/40
CPCH02K23/66H02K11/40
Inventor 罗辉生阮鹏沈政委
Owner GUANGZHOU GRG METROLOGY & TEST CO LTD
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