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Voice coil motor

A voice coil motor and coil technology, applied in the direction of electrical components, electromechanical devices, etc., can solve the problems of coil heat cannot be dissipated in time, reduce motor efficiency, coil heating, etc., to improve heat generation and heat dissipation, improve efficiency and performance, coil The effect of the reduced number of turns

Inactive Publication Date: 2010-08-18
比锐精密设备(深圳)有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the internal space of the stator is closed in this design, the heat generated by the coil cannot be dissipated in time, which will cause the temperature rise of the stator, cause distortion to the gap magnetic field, and seriously affect the stability of the thrust of the motor
At the same time, because it cannot be dissipated into the outside air in time, it will cause the coil to heat up, reduce the efficiency of the motor, and cause damage to the coil after long-term operation.

Method used

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Embodiment Construction

[0016] Embodiments of the voice coil motor of the present invention will be described below with reference to the accompanying drawings.

[0017] like figure 2 As shown, the motor mover coil of the invention is composed of two mover coils 1 and 2 separated by a mover coil skeleton 1 . Currents in opposite directions are passed through the coil combination. The two shaft ends of the motor stator magnet of the invention each have a central iron yoke 1 and 2 coaxial with the magnet, and they and the outer iron yoke 5 jointly form two magnetic circuits, forming a gap magnetic field at both ends, because The fixed frame 8 of the central iron yoke is a non-magnetic material, so the two gap magnetic fields at both ends of the stator are equal in size and opposite in polarity. like Figure 5 Only one gap magnetic field can be formed in the conventional voice coil motor structure shown.

[0018] like Image 6 As shown, when the motor moves in a small stroke near the figure, the c...

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Abstract

The invention relates to a voice coil motor, which comprises a mover and a stator, and is characterized in that the motor mover comprises at least two separate coils, and the two ends of the stator are open and form gap magnetic fields; the current in at least two separate coils of the mover is respectively coupled with at least one group of two gap magnetic fields at the two ends of the stator to generate a thrust doubling the magnetic field at one end. Heat generated by the motor coils can dissipate in the outside air through air flow in open air gaps, thereby providing the motor with stable performance to realize high high-speed and high-precision motion control for semiconductor equipment.

Description

technical field [0001] The invention is a voice coil motor, which is a drive device that generates a thrust relative to the stator after the stator provides a fixed magnetic field and passes a single-phase direct current into the mover. The invention relates to a voice coil motor, especially a high-frequency response motor suitable for the occasion of large thrust and small stroke. Background technique [0002] A voice coil motor is a linear motion motor composed of a stator and a mover. Usually the stator consists of a cylindrical magnet installed in the axial direction and a coaxial iron yoke and the outer iron yoke to form a fixed magnetic circuit. A fixed magnetic field is formed in the gap between the outer iron yoke and the central coaxial iron yoke. The coil is energized by The action of the gap magnetic field produces axial thrust. Because the internal space of the stator is closed in this design, the heat generated by the coil cannot be dissipated in time, which w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K33/18
Inventor 禹新路程炜赵宝恩
Owner 比锐精密设备(深圳)有限公司
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