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Motor magnetic steel

A magnetic steel and curved surface technology, applied in the direction of magnetic circuits, electromechanical devices, electrical components, etc., can solve the problems of low load speed, high noise, large load current, etc., and achieve the effect of reducing motor torque ripple

Pending Publication Date: 2019-07-02
自贡市江阳磁材有限责任公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The first type has high noise and low load speed; the second type has low noise but the load speed has not yet reached the high-end requirements, and the load current will be too large, which is difficult to meet higher environmental protection requirements

Method used

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Experimental program
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Embodiment 1

[0011] Embodiment 1: adopt the same batch of molding slurry, under the same molding, sintering, detection process conditions, the product made, such as figure 1 Combined with sample No. 2 in Table 1, it is a motor magnet. The radian of the outer arc surface of the magnet body is determined according to the motor shell to ensure that the magnet and the motor shell are firmly attached. The two ends of the outer arc surface 1 respectively have an arc surface that transitions with the radian of the outer arc surface. There is a certain gap between the extension surface of the outer arc surface and the arc surface. This gap is an air gap, and this arc surface is an air gap transition arc 4. The center of the air gap transition arc 4 deviates from the center of the outer arc surface 1 of the magnetic steel, and the total width of the air gap (w1‐w) is 40% of the total width w1 of the magnetic steel (w1‐w) / w1=40%); the outer arc surface of the main body 1 The vertical distance h betw...

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Abstract

Disclosed is motor magnetic steel. The motor magnetic steel is characterized in that the two ends of an outer arc surface of a magnet steel main body are provided with arc surfaces which transit withthe outer arc surface in an arc manner, gaps exist between the arc surfaces and extending lines of the outer arc surface, the gaps are air gaps, the arc surfaces are air gap transition arcs, the totalwidth of the air gaps is 1 / 3-1 / 2 of the total width of the magnetic steel, the vertical distance between an outer arc extending surface of the main body and the outer end of each air gap transition arc is 0.3-0.5 mm, the two ends of an inner arc surface of the magnetic steel main body are provided with platforms, the total projection length of the platforms is 1 / 4-1 / 2 of the total width of the magnetic steel, and angles between the platforms and inner arc chords form platform air gap angles which are 5 degrees to 15 degrees. The motor magnetic steel reduces the motor noise and improves the magnetic energy utilization rate.

Description

technical field [0001] The invention relates to motor components, in particular to a motor magnet. Background technique [0002] The magnetic steel used as the stator of the existing DC micro-motor is the following two structures: 1. concentric magnetic steel, the inner circular arc and the outer circular arc are concentric, that is, the wall thickness is equal thickness. The air gap is the same; 2. Eccentric magnetic steel, the inner arc and the outer arc are not concentric, and the wall thickness is the thickest in the middle and the thinnest on both sides. The first type has high noise and low load speed; the second type has low noise but the load speed has not yet reached the high-end requirements, and the load current will be too large, which is difficult to meet higher environmental protection requirements. Therefore, a magnetic steel that can reduce noise and have a higher load speed is an urgently needed product in the market. Contents of the invention [0003] I...

Claims

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Application Information

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IPC IPC(8): H02K1/17
CPCH02K1/17H02K2201/03H02K2213/03
Inventor 王自敏邓志刚陈明利袁昱丁仁宇周成彬
Owner 自贡市江阳磁材有限责任公司
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