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Electric motors and methods of manufacturing electric motors

A motor and screw fixing technology, which is applied in the manufacture of motor generators, electric components, circuits, etc., can solve problems such as narrow joints and reduced rigidity of brush holders

Active Publication Date: 2018-05-04
DENSO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For this reason, a notch is formed on the connecting portion so as to avoid the screw, and as a result, the connecting portion becomes narrow in width, which reduces the rigidity of the brush holder.

Method used

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  • Electric motors and methods of manufacturing electric motors
  • Electric motors and methods of manufacturing electric motors
  • Electric motors and methods of manufacturing electric motors

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0013] One embodiment of the motor will be described below.

[0014] Such as figure 1 As shown, the motor 10 of this embodiment is used as a drive source for a automatic window device of a vehicle, and includes a motor body 11 and a deceleration unit 12 that decelerates the rotational speed of the motor body 11 .

[0015] The yoke housing 13 of the motor main body 11 includes a cylindrical body portion, a bottom, an open end, and a flange portion 14 . The flange portion 14 extends radially outward from the open end. The flange portion 14 has a flat plate shape perpendicular to the axial direction. A field magnet 15 is fixed to an inner peripheral surface of the yoke case 13 , and a rotor 16 is disposed inside the field magnet 15 .

[0016] A rotor core 18 and a commutator 19 are integrally fixed to a rotating shaft 17 of the rotor 16 . A winding 18 a is wound around the rotor core 18 . To the commutator 19, the end of the winding 18a is connected. The rotor core 18 is ra...

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PUM

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Abstract

An electric motor and a method for manufacturing the electric motor. The motor includes: a motor main body including a yoke case having a flange portion having a screw fixing portion; a speed reducing portion having a gear box having a screw fixing portion; and a brush holder made of resin, the brush The frame is fixed by fixing screws in a state of being sandwiched between the flange portion of the yoke case and the gear case of the speed reduction portion. The connecting portion of the brush holder is located between the screw fixing portion of the flange portion and the screw fixing portion of the gear case. The connector part is connected to the frame main body through the connection part. The connecting portion has a screw insertion hole, a first bridge portion, and a second bridge portion. Metal terminals electrically connecting the frame main body and the connector are embedded in the first bridge and the second bridge, respectively.

Description

technical field [0001] The present invention relates to a motor with a reduction mechanism provided with a brush holder and a method of manufacturing the motor. Background technique [0002] Conventionally, for example, a motor with a speed reduction mechanism disclosed in Japanese Patent Application Laid-Open No. 2012-244851 includes a motor main body including a yoke housing and a speed reduction unit including a gear box. In a state where the resin brush holder is sandwiched between the flange portion of the yoke case and the gear case, the screw fixing portion of the flange portion and the fixing portion of the gear case are fastened with screws. The brush holder includes: a holder main body holding a brush for power supply; a connector part for connecting to the outside; and a connection part connecting the holder main body and the connector part. [0003] However, in the motor as described above, from the requirement of flattening in the direction perpendicular to the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K7/116H02K5/14H02K13/00H02K15/00
CPCH02K5/04H01R39/383H02K5/148H02K5/225H02K7/1166H02K11/38H02K15/12
Inventor 大森伸吾
Owner DENSO CORP