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Motor for washing machine, motor for clothes dryer, motor and motor rotor manufacturing method

A technology of rotor and rotor core, which is applied to other washing machines, electromechanical devices, manufacturing stator/rotor body, etc., can solve problems such as easy magnetic flux leakage and reduce motor efficiency, and achieve the effect of reducing magnetic flux leakage and improving motor performance

Active Publication Date: 2016-04-13
JOHNSON ELECTRIC SHENZHEN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

One disadvantage of this brushless motor is that the rotor core is in direct contact with the shaft, which is prone to magnetic flux leakage
In addition, if the parts of different polarities in the rotor core are directly connected, it is easy to leak magnetic flux, which reduces the efficiency of the motor.

Method used

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  • Motor for washing machine, motor for clothes dryer, motor and motor rotor manufacturing method
  • Motor for washing machine, motor for clothes dryer, motor and motor rotor manufacturing method
  • Motor for washing machine, motor for clothes dryer, motor and motor rotor manufacturing method

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Embodiment Construction

[0029] The technical solutions and other beneficial effects of the present invention will be apparent through the detailed description of specific embodiments of the present invention below in conjunction with the accompanying drawings.

[0030] Such as figure 1 with figure 2 As shown, a brushless motor provided by an embodiment of the present invention includes a stator and a rotor, and the rotor is rotatably mounted to the stator. The stator includes a stator core 11, a stator winding 13 wound on the teeth 12 of the stator core, an end cover 16 and an end cover 18 mounted on two axial ends of the stator core, and the like. The stator core 11 is formed by stacking several core pieces along the axial direction of the motor. The stator core 11 includes an annular yoke and 12 teeth 12 protruding inward from the yoke. The winding 13 is a concentrated winding, including 12 coil elements, each coil element is wound on the tooth body of the corresponding tooth 12, and each tooth ...

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PUM

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Abstract

An electric motor has a wound stator and a permanent magnet rotor. The rotor includes a shaft, a hub fixed on the shaft, a plurality of rotor core segments and magnets fixed around the hub, and a pair of covers fixed to axial ends of the rotor core segments. The hub and covers are formed on the rotor core segments by inserting molding and one of the covers has openings to allow the magnets to be inserted into spaces formed between adjacent rotor core segments such that the rotor core segments and magnets are alternately arranged in a circumferential direction of the rotor.

Description

technical field [0001] The invention relates to the field of motors, in particular to a rotor of a permanent magnet brushless motor and a method for manufacturing the rotor. Background technique [0002] The brushless motor includes a stator and a rotor, and the rotor includes a rotating shaft, a rotor core fixed to the rotating shaft, and permanent magnets fixed to the rotor core. Under the action of permanent magnets, different parts of the rotor core have different polarities. The rotor is mounted to the stator via a shaft around which the rotor is rotatable. A disadvantage of the brushless motor is that the rotor iron core is in direct contact with the rotating shaft, which is prone to magnetic flux leakage. In addition, if the parts of different polarities in the rotor core are directly connected, it is easy to leak magnetic flux, thereby reducing the efficiency of the motor. [0003] Therefore, need badly a kind of scheme that can overcome above-mentioned defect. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K21/14H02K1/27H02K15/03D06F37/30
CPCD06F37/30H02K1/2773
Inventor 赵健李越姜茂雄张亚明朱晓宁
Owner JOHNSON ELECTRIC SHENZHEN