Motor and method of manufacturing the motor
A technology of motors and connecting parts, which is applied in the manufacture of motor generators, stator/rotor bodies, synchronous motors with stationary armatures and rotating magnets, etc. It can solve the problems of low fixing strength, complex structure of resin parts, and rotor production efficiency. Low and other problems, to achieve the effect of improving the fixing strength
Active Publication Date: 2019-02-19
NIDEC TECHNO MOTOR CORP
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- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Therefore, the structure of the resin part becomes complicated, and there is a problem that the production efficiency of the rotor is lowered.
In addition, the structure of the rotor described in Japanese Laid-Open Publication No. 2012-060772 is a structure in which the resin portion is filled so as to sandwich the upper and lower end surfaces of the magnet in the axial direction, and there is a problem that the fixing strength of the rotor to the shaft is low.
Method used
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no. 1 approach
[0021] (1-1. The overall structure of the motor)
[0022] A first embodiment of the present invention will be described. figure 1 It is a vertical cross-sectional view of the motor 1 according to this embodiment. The motor 1 of the present embodiment is used in home appliances such as air conditioners, for example. However, the motor of the present invention can also be used for products other than home electric appliances. For example, the motor of the present invention can be installed in transportation devices such as automobiles and railways, office equipment, medical equipment, tools, large industrial equipment, etc., to generate various driving forces.
[0023] Such as figure 1 As shown, the motor 1 has a stationary part 2 and a rotating part 3 . The stationary unit 2 is fixed to the housing of the device to be driven. The rotating part 3 is supported rotatably relative to the stationary part 2 .
[0024] The stationary unit 2 of this embodiment has a motor case 21...
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The present invention relates to a motor and a method of manufacturing the motor, the motor having a stationary part and a rotating part. The rotating part is supported so as to be rotatable about a central axis extending up and down relative to the stationary part. The rotating part has a shaft, a resin part, and a rotor magnet. The resin part is fixed to the shaft. The stationary part has a motor case, an armature, and a pair of bearings. The resin part has a shaft fixing part and a connection part. The connection part connects the rotor magnet and the shaft fixing part. The rotor magnet has a clamping portion protruding radially inward from the radially inner peripheral surface. The holding part has an upper holding part and a lower holding part. The upper side holding part and the lower side holding part hold the radial outer upper surface and the lower surface of the connection part.
Description
technical field [0001] The invention relates to a motor and a method for manufacturing the motor. Background technique [0002] Conventionally, the stator of a motor is molded with resin to form a housing. There is a molded motor with a rotor built inside. Such a molded motor has excellent stator waterproofness, vibration resistance against vibration of the stator when the motor is driven, and noise resistance. [0003] As for the molded motor, there is a motor described in Japanese Laid-Open Publication No. 2012-060772, for example. The motor described in Japanese Laid-Open Publication No. 2012-060772 discloses a structure in which a rotor, a molded stator, and a pair of rolling bearings are supported by the molded stator and a bracket. [0004] As for the drive method of the motor, PWM drive control for inverter control is generally performed. In recent years, in order to meet the demand for higher motor efficiency, the drive voltage of the motor has been increased and...
Claims
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IPC IPC(8): H02K21/14H02K1/27H02K15/03
CPCH02K1/27H02K15/03H02K21/14H02K1/278H02K5/167H02K1/28H02K15/12
Inventor 冈田健冈田忠士
Owner NIDEC TECHNO MOTOR CORP