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Motor

A technology of magnetic bodies and shells, applied in the direction of electromechanical devices, electrical components, electric components, etc., can solve the problems of sheet strength, elasticity reduction, low elasticity, sheet rupture, etc.

Pending Publication Date: 2021-11-26
MINEBEA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In addition, if the amount of additives such as iron constituting the sheet is adjusted in order to improve the magnetic properties of the sheet or the sheet is made of an amorphous alloy, the strength and elasticity of the sheet will decrease.
If the strength and elasticity of the sheet are low, the sheet may be damaged due to the load applied to the laminate when the metal fastening mechanism is fastened.

Method used

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Embodiment Construction

[0028] Hereinafter, embodiments of the present invention will be described with reference to the drawings. figure 1 It is a cross-sectional view of a motor 1 according to an embodiment of the present invention, figure 2 It is a perspective view showing the state of manufacturing the stator 10 of the motor 1, image 3 It is a perspective view showing the state of manufacturing the stator 10 . Figure 4 It is a plan view of the stator core 2 and the coil 7 used in the motor 1 .

[0029] The motor 1 according to this embodiment includes a stator 10, a rotor 20, and a housing 30. The stator 10 includes a stator core 2 formed of a laminated body of a plurality of magnetic materials 2A, a case 3 for holding the stator core 2, and a cover case. The cover 4 of the body 3 , the column 5 guiding the plurality of magnetic bodies 2A in the central axis X direction, the insulator 6 arranged between the case 3 and the cover 4 , and the coil 7 . The column 5 has positioning portions 511 ...

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Abstract

The invention provides a motor capable of suppressing damage to a magnetic body while increasing the occupancy rate of the magnetic body. A stator (10) of a motor (1) includes a plurality of magnetic bodies (2A) stacked in a direction of a central axis (X), a case (3) configured to hold the plurality of magnetic bodies (2A), a cover (4) configured to cover the case (3), and a pillar (5) including a guiding part (54) configured to guide the plurality of magnetic bodies (2A) in the direction of the central axis (X). The plurality of magnetic bodies (2A) include a guided part (23) guided by the pillar (5). The pillar (5) includes an outer peripheral surface including positioning parts (511,531). The positioning parts (511,531) determine relative positions of the case (3) and the cover (4) in an axial direction.

Description

technical field [0001] The present invention relates to electric machines. Background technique [0002] For the stator material of the motor, soft magnetic materials such as silicon steel plates whose magnetization is easily changed are used. Since soft magnetic materials exhibit electrical conductivity and have the potential to generate eddy currents, eddy currents are suppressed by laminating sheets with a thickness of about 0.5 to 0.1 mm. However, if an adhesive is provided between the sheets when a laminate is formed from a plurality of sheets, the occupation ratio of the magnetic material may decrease due to the volume of the adhesive, resulting in a decrease in motor efficiency. [0003] As a solution to this problem, there has been proposed a motor in which a metal fastening mechanism is provided at an opening of a laminate on which soft magnetic thin strips are laminated. In such a motor, a plurality of thin strips are positioned by a metal fastening mechanism so ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K1/14H02K1/16H02K1/17H02K3/28H02K3/12H02K3/34
CPCH02K1/146H02K1/165H02K1/17H02K3/28H02K3/12H02K3/345H02K2213/03H02K1/185H02K5/04
Inventor 大村准
Owner MINEBEA CO LTD
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