Motor and rotor thereof

A technology of motor rotor and rotor winding, which is applied in the direction of electromechanical devices, electrical components, electric components, etc., can solve problems such as affecting the efficiency of the motor and shortening the service life of the motor, and achieve the effect of improving heat dissipation and improving heat dissipation efficiency.

Inactive Publication Date: 2015-12-30
JOHNSON ELECTRIC SHENZHEN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the motor is running, the rotor winding will generate heat. If the motor cannot dissipate he

Method used

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  • Motor and rotor thereof
  • Motor and rotor thereof
  • Motor and rotor thereof

Examples

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Example Embodiment

[0027] reference Figure 1 to Figure 9 The motor 20 provided by an embodiment of the present invention is a permanent magnet direct current (PMDC) brushed motor. The electric motor 20 includes a stator 30 and a rotor 50.

[0028] The stator 30 includes a cylindrical housing 31 with an open end, four permanent magnets 41 mounted to the inner wall of the housing 31, a brush holder 43 mounted to one open end of the housing 31, and an end cover 38 mounted to the open end. The open end of the housing 31 has a plurality of connecting pieces 34. After the end cover 38 is installed, the connecting pieces 34 are bent inward to fix the end cover 38 and the housing 31 together. The other end of the housing 31 is provided with a bottom 35, and both the bottom 35 and the end cover 38 are provided with bearing seats for mounting the bearings 47 and 48, respectively. At least one pair of brushes 44 is installed on the brush holder 43, and the at least one pair of brushes 44 is respectively con...

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Abstract

The present invention provides a motor and a rotor thereof. The motor rotor comprises a rotation shaft, a rotor iron core and a rotor winding. The rotor iron core is fixed to the rotation shaft and is provided with a plurality of teeth which extend outward, and a winding slot is formed between two adjacent teeth. The effective side of the rotor winding is accomodated in the winding slot. The motor rotor also comprises a heat radiator made of a thermally conductive material. The heat radiator comprises two ring bodies and a plurality of connection pieces connected between the two ring bodies. The two ring bodies are at the two axial end parts of the rotor iron core, and the connection pieces are accommodated in the corresponding winding slots and are thermally connected to the effective side of the rotor winding. One ring body of the heat radiator is also provided with a plurality of blades for generating air flow in the rotation of the rotor. According to the motor and the rotor, through the thermal connection of the heat radiator and the rotor winding, the heat radiation efficiency of the rotor winding is raised, and thus the heat radiation of the motor is improved.

Description

【Technical field】 [0001] The invention relates to the field of motors, and more specifically, to a rotor and a motor using the rotor. 【Background technique】 [0002] A rotor of a brushed motor has a rotating shaft, a commutator and a rotor core fixed to the rotating shaft, and rotor windings wound to teeth of the rotor core and electrically connected to segments of the commutator. When the motor is running, the rotor winding will generate heat. If the motor cannot dissipate heat in time, it will affect the efficiency of the motor and shorten the service life of the motor. [0003] Therefore, there is an urgent need for a solution to improve the heat dissipation of the motor. 【Content of invention】 [0004] The object of the invention is to improve the heat dissipation of the motor. [0005] To this end, the first aspect of the present invention provides a motor rotor, including a rotating shaft, a rotor core and a rotor winding; the rotor core is fixed to the rotating sh...

Claims

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Application Information

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IPC IPC(8): H02K1/26H02K9/00H02K9/06H02K5/20
CPCH02K9/06H02K9/28H02K9/227H02K5/207
Inventor 刘清士何婷阮昌荣李育英侯杨庆
Owner JOHNSON ELECTRIC SHENZHEN
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