Double-magnetic-circuit permanent magnet type limited angle motor

A limited rotation angle, permanent magnet technology, applied to the magnetic circuit rotating parts, magnetic circuit, magnetic circuit shape/style/structure, etc., can solve the problems of low winding utilization rate, large air gap, etc., to achieve higher utilization rate, The effect of increasing the moment density

Inactive Publication Date: 2015-07-22
NO 21 RESERCH INST OF CHINA ELECTRONICS TECH GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a dual-magnetic circuit permanent magnet limited-angle motor to solve the problems of large air gap and low winding utilization in the existing ring-core type limited-angle motor

Method used

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  • Double-magnetic-circuit permanent magnet type limited angle motor
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  • Double-magnetic-circuit permanent magnet type limited angle motor

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Embodiment Construction

[0016] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

[0017] Such as Figure 1-3 As shown, the embodiment of the present invention includes a collar (may also include an adjusting washer) 1, a bearing bracket 2, a bearing 3, a stator bracket 4, an inner winding 5, an annular iron core 6, an outer winding 7, an outer rotor magnet 8, an outer Rotor yoke 9 , inner rotor magnetic steel 10 , inner rotor yoke 11 , motor shaft 12 , rotor bracket 13 .

[0018] The rotor bracket 13 and the motor shaft 12 are relatively fixed, the motor shaft 12 is located in the bearing 3, the stator bracket 4 is connected with the motor shaft 12 through the bearing 3, and the cylindricity is ensured, and the rotor bracket 13 and the stator bracket 4 are arranged relatively parallel. The cylindrical annular iron core 6 is set on the edge of the stator bracket 4, the outer rotor yoke 9 and the inner rotor yoke 11...

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Abstract

The invention discloses a double-magnetic-circuit permanent magnet type limited angle motor. The double-magnetic-circuit permanent magnet type limited angle motor comprises a stator support, a rotor support, an outer rotor magnet yoke, an inner rotor magnet yoke, outer rotor magnet steel, inner rotor magnet steel, an annular iron core, inner windings and outer windings, the outer rotor magnet yoke and the inner rotor magnet yoke are fixed on the same side of the rotor support, the inner rotor magnet yoke is positioned inside the outer rotor magnet yoke, an annular space is formed between the inner rotor magnet yoke and the outer rotor magnet yoke, the outer rotor magnet steel is fixed on the inner surface of the outer rotor magnet yoke, the inner rotor magnet steel is fixed on the outer surface of the inner rotor magnet yoke and opposite to the outer rotor magnet steel one by one, magnetizing directions of the inner rotor magnet steel and the outer rotor magnet steel at opposite positions are opposite, and the annular iron core is fixed on one side of the stator support and extends into the annular space. The double-magnetic-circuit permanent magnet type limited angle motor has the advantages that utilization rate of the annular windings can be doubled, and force moment density of the motor can be improved.

Description

technical field [0001] The invention belongs to the technical field of motors, and relates to a limited-rotation-angle motor, in particular to a dual-magnetic circuit permanent-magnet limited-rotation-angle motor. Background technique [0002] At present, continuous rotating DC motors have been widely used, but in some special applications, such as infrared imaging, laser marking, laser radar, optical machine scanning, etc. High performance, long life and high reliability DC limited angle motor. [0003] Ordinary brushed DC motors require brushes and commutators, so they are not only complex in structure but also low in reliability when used in these special systems. In addition, frequent reciprocating swings will cause violent jumping of the brushes, making them in poor contact with the commutator. , causing missing pulses, noise impacts and even system oscillations to the system. The brushless DC motor uses electronic commutation to replace the mechanical commutation dev...

Claims

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Application Information

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IPC IPC(8): H02K16/02H02K3/28H02K1/27
CPCH02K16/02H02K1/2706H02K1/2733H02K3/28
Inventor 李立娜袁永杰陆英钱华胡浩钱乐秦祖和
Owner NO 21 RESERCH INST OF CHINA ELECTRONICS TECH GRP
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