Motor and fan

A technology of motors and brushes, which is applied in the field of motors and fans, can solve problems such as electronic components malfunctioning, and achieve the effect of suppressing electromagnetic noise

Active Publication Date: 2016-10-12
NIPPON DENSAN CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, when the electric motor is installed, for example, inside an automobile equipped with electronic components, there is a possibility that the electronic components may malfunction due to electromagnetic noise.

Method used

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  • Motor and fan
  • Motor and fan
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Experimental program
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Embodiment Construction

[0027] Hereinafter, a fan and a motor according to an exemplary embodiment of the present application will be described with reference to the drawings. In addition, the scope of the present invention is not limited to the following embodiments, and can be changed arbitrarily within the scope of the technical idea of ​​the present invention. In addition, in the following drawings, in order to facilitate understanding of each structure, the actual structure may be different from the scale, number, etc. of each structure.

[0028] Also, in the drawings, the XYZ coordinate system is appropriately represented as a three-dimensional orthogonal coordinate system. In the XYZ coordinate system, the X direction acts as the figure 1 The axial parallel direction of the central axis J is shown. The Z-axis direction is used as the up-down direction. The Y-axis direction is a direction perpendicular to both the X-axis direction and the Z-axis direction.

[0029] In addition, in the follo...

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PUM

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Abstract

A motor includes a rotor, a brush card assembly arranged to supply an electric current to the rotor, a housing, a permanent magnet, and a bearing. The rotor includes a core fixed to a shaft, a coil arranged to excite the core and a commutator connected to the coil. The coil is wound around the core in a concentrated winding method. The brush card assembly includes at least one pair of brushes having different polarities, the brushes disposed along a circumferential direction and connected to each other via the commutator and the coil, a X capacitor parallel-connected to the brushes, Y capacitors parallel-connected to the brushes and a brush card arranged to hold the brushes, the X capacitor and the Y capacitors. The brush card includes a ground portion. The X capacitor is positioned between the brushes in the circumferential direction. The Y capacitors are connected to the ground portion.

Description

technical field [0001] The present invention relates to motors and fans. Background technique [0002] Conventionally, for example, a motor having brushes described in Japanese Laid-Open Patent Publication No. 2000-14073 is known. [0003] In the above-mentioned electric motor (motor) having brushes, electromagnetic noise is generated due to sparks generated between the brushes and the commutator at the time of alternating current. Therefore, when the electric motor is installed, for example, in an automobile equipped with electronic components, there is a possibility that the electronic components may malfunction due to electromagnetic noise. [0004] On the other hand, when the electric motor is installed in a limited space such as the interior of an automobile, the installation space of other components decreases when the installation space of the motor increases, so the miniaturization of the motor is desired. Contents of the invention [0005] In view of the above p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K11/026H02K5/04H02K5/14H02K5/02
CPCH02K5/02H02K5/04H02K5/14F04D25/0613F04D29/083H02K5/148H02K11/026H02K5/225
Inventor 桧皮隆宏大菅祥平
Owner NIPPON DENSAN CORP
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