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Low-noise permanent magnet direct current motor

A permanent magnet DC, low-noise technology, applied in electrical components, electromechanical devices, electrical components, etc., can solve the problem that the motor noise level cannot meet the needs of customers and the high noise, so as to improve the user experience, reduce noise, and reduce friction noise. Effect

Pending Publication Date: 2021-06-01
ZHEJIANG JIECHANG LINEAR MOTION TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The traditional permanent magnet DC motor has the problem of high noise when it is applied to the push rod or column structure.
With the improvement of living standards, consumers have higher and higher requirements for motor noise, and the noise level of existing motors cannot meet customer needs

Method used

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  • Low-noise permanent magnet direct current motor
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  • Low-noise permanent magnet direct current motor

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Effect test

Embodiment Construction

[0033] The invention provides a low-noise permanent magnet DC motor, comprising a casing and a rotating shaft with one end extending out of the casing, the casing is provided with a commutator fixed on the rotating shaft and a commutator which is in contact with the commutator to A carbon brush for transmitting current, the inner surface of the carbon brush includes an axially connected axial arc surface and a connecting inclined surface, one end of the connecting inclined surface is connected with the axial arc surface, and the other end is inclined toward the outer side of the casing and Connected with the end surface of the carbon brush, the axial arc surface forms surface-to-surface contact with the outer peripheral surface of the commutator.

[0034] Compared with the surface-to-surface contact between the entire inner surface of the carbon brush and the outer peripheral surface of the commutator in the prior art, the inner surface of the carbon brush in the present invent...

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Abstract

The invention discloses a low-noise permanent magnet direct current motor. The invention aims to solve the technical problem that a conventional permanent magnet direct current motor is high in noise when working. The low-noise permanent magnet direct current motor comprises a shell and a rotating shaft, wherein one end of the rotating shaft extends out of the shell, the shell is internally provided with a commutator fixed on the rotating shaft and a carbon brush which is in contact with the commutator to transmit current, the inner side face of the carbon brush comprises an axial arc face and a connecting inclined face which are axially connected, one end of the connecting inclined face is connected with the axial arc face, the other end of the connecting inclined face inclines towards the outer side of the shell and is connected with the end face of the carbon brush, and the axial arc face is in face-to-face contact with the peripheral face of the commutator.

Description

【Technical field】 [0001] The invention relates to the technical field of permanent magnet DC motors, in particular to a low-noise permanent magnet DC motor. 【Background technique】 [0002] The traditional permanent magnet DC motor has the problem of high noise when applied to the push rod or column structure. With the improvement of living standards, consumers have higher and higher requirements for motor noise, and the noise level of existing motors cannot meet the needs of customers. The causes of motor noise include mechanical noise, electromagnetic noise and aerodynamic noise. The motors in the push rods or the columns do not have fans, so the aerodynamic noise is very low. The main sources of noise are mechanical noise and electromagnetic noise. For this reason, it is necessary to develop a low-noise permanent magnet DC motor to improve the use of users. experience. [Content of the invention] [0003] The technical problem to be solved by the present invention is t...

Claims

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Application Information

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IPC IPC(8): H02K5/14H02K5/15H02K1/27H02K5/24
CPCH02K1/27H02K5/143H02K5/15H02K5/24
Inventor 王博丁苗江刘俊
Owner ZHEJIANG JIECHANG LINEAR MOTION TECH
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