DC linear voice coil motor

A voice coil motor, linear technology, applied in the direction of electromechanical devices, electrical components, etc., can solve the problem of magnetic leakage, the performance of the magnet is not fully utilized, the output of the voice coil motor does not meet the requirements, etc., to achieve large output and sufficient magnetic flux. Useful, tightly structured effects

Inactive Publication Date: 2007-11-07
HUAZHONG UNIV OF SCI & TECH
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Problems solved by technology

[0005] In the design of voice coil motors with traditional structures, magnetic flux leakage problems often occur due to unreasonable magnetic circuit design, resulting in the underutilization of the performance of the magnets, resulting in the output of voice coil motors not meeting the application requirements of small size, large output, high stroke and high frequency. occasion

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  • DC linear voice coil motor
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[0020] According to the above structure, a voice coil motor was trial-produced (as shown in Figure 2, the tile-shaped magnetic steel group consists of 12 tile-shaped magnetic steels whose magnetization direction is radial), the outer diameter is 25mm, and the equilibrium length is 24mm. , the stroke is ±2.5mm, and the output is 6.39N / A. It achieves a large voice coil output under the limitation of small size, so that a wider range of applications can be obtained. For example, it can drive a laser beam scanner with a mechanical scanning angle of ±5° The scanning frequency is over 200Hz.

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Abstract

A voice coil motor of AC linear type is prepared as setting magnetism charging direction of ring magnetic steel to be radial direction and that of tile magnetic steel to be radial direction as well as that of cylindrical magnetic steel to be axial direction, arranging said ring or tile magnetic steel on base surface of iron shell along internal wall of said shell and cylindrical magnetic steel at center of iron shell bottom, arranging iron core on cylindrical magnetic steel, winding lacquered wire coil on voice coil support and erecting voice coil support in air gas between internal surface of iron shell and external surface of iron core.

Description

technical field [0001] The invention belongs to the technical field of mechanical engineering, and particularly relates to a DC linear voice coil motor. Background technique [0002] Voice coil motor (Voice Coil Actuator, VCA) is a special form of direct drive motor, which has the characteristics of simple structure, small size, high speed, high acceleration and fast response. It works by placing an energized coil (conductor) in a magnetic field to generate a force proportional to the current applied to the coil. The motion form of the voice coil motor manufactured based on this principle can be a straight line or an arc. [0003] Since its inception, it has been widely used in optical disk drives, hard disk drives, medical equipment, aerospace instruments (such as aerospace refrigerators), precision distance measuring instruments (such as Hall displacement measurement devices), piston lathe tool holders and mobile phones (as vibration It is a linear motor with very advanc...

Claims

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Application Information

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IPC IPC(8): H02K33/18
Inventor 陈四海马冬新向思桦魏伟肖丁吴鑫
Owner HUAZHONG UNIV OF SCI & TECH
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