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Direct-current motor

A technology of DC motors and conductive parts, applied in electric components, electromechanical devices, electrical components, etc., can solve the problems of affecting the normal operation of other electronic components and large electromagnetic noise, and achieve the effect of avoiding sparks and reducing electromagnetic noise.

Active Publication Date: 2013-04-10
BYD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problem that the electric sparks generated by the commutator of the current DC motors cause large electromagnetic noise and affect the normal operation of other electronic components, the present invention proposes a DC motor that can effectively avoid the generation of electric sparks, thereby reducing electromagnetic noise and avoiding the influence of Normal operation of other electronic components

Method used

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Embodiment Construction

[0022] In order to make the technical problems, technical solutions and beneficial effects solved by the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0023] as attached figure 1 As shown, a DC motor provided by the present invention includes a stator, a rotor disposed in the stator, and a first end cover 1a and a second end cover 1b installed at both ends of the stator. The rotating shaft 6 between the first end cover 1a and the second end cover 1b, the silicon steel sheet 8 fixedly installed on the rotating shaft 6 and the winding coil 7 wound on the silicon steel sheet 8, the first end cover 1a and the second end cover 1b is fixedly connected with a mounting sleeve 3, the mounting sleeve 3 includes a first conducti...

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PUM

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Abstract

The invention provides a direct-current motor. The direct-current motor is provided with a mounting sleeve, a mounting ring and homing magnetic steel, the mounting sleeve is provided with an electric conduction portion and an insulating portion, a rotor rotates under the action of electric current and attractive force through cooperation of the mounting sleeve, the mounting ring and the homing magnetic steel, a commutator is not required, electric spark can be effectively avoided, thereby electromagnetic noises are lowered, and normal operation of other electronic components is prevented from being affected.

Description

technical field [0001] The invention relates to a DC motor, in particular to a DC motor without a commutator. Background technique [0002] DC motors are widely used in various industries, especially in the automotive industry, many adjustment devices are implemented using DC motors, such as seat adjustment, seat belt height adjustment, etc. [0003] Most of the DC motors currently on the market have a traditional structure with brushes and commutators. This structure can realize the smooth operation of the DC motor, but the current in the motor rotor of this type of structure is constantly changing. When commutating Sparks are generated, which increases the electromagnetic noise of the motor, affects the electromagnetic compatibility of the motor, and interferes with the normal operation of other electronic components in the car. Contents of the invention [0004] Aiming at the problem that the electric sparks generated by the commutator of the current DC motors cause la...

Claims

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Application Information

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IPC IPC(8): H02K29/00H02K1/17H02K1/22H02K11/00H02K11/028
Inventor 刘伟田国威
Owner BYD CO LTD
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