Mutually-embedded anti-interference thrust voice coil motor
A voice coil motor, inter-embedded technology, applied in the direction of propulsion systems, electrical components, electromechanical devices, etc., can solve the problems of large volume, small voice coil motor thrust, etc., to reduce the volume of the whole machine, increase the electromagnetic force, improve The effect of anti-magnetic interference ability
Pending Publication Date: 2019-02-01
辽宁中蓝光电科技有限公司
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Problems solved by technology
[0004] In order to solve the problems of the existing voice coil motors with small thrust and large volume under the same high thrust, the purpose of the present invention is to provide an inter-embedded anti-interference high-thrust voice coil motor
Method used
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Embodiment
[0026] An anti-jamming high-thrust voice coil motor with double magnetic poles on opposite sides, a rectangular shell 1, the shell is made of non-magnetic metal material, integrally stamped and formed to avoid magnetic interference, and protect the inner mover and other parts of the voice coil motor Function: The stamping boss is reserved inside to bear against the yoke;
[0027] The yoke 2 is made of magnetically conductive metal, which is stamped and formed in one piece. The side surface is flattened with the inner wall of the shell, and can be fixed by laser welding or glue bonding. figure 2 , The interior of the yoke adopts a double-leaf design, constraining the magnetic field lines generated by the induction coil to scatter outwards, so that the magnetic force bundles are concentrated around the induction coil, and the electromagnetic force is increased under the same current and number of coil turns, and it plays a role of magnetic shielding;
[0028] Coil 5 and carrier...
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The invention discloses a mutually-embedded anti-interference thrust voice coil motor. The voice coil motor comprises a housing, magnet yokes, a magnet, a coil and a carrier. The magnet yokes are arranged at both sides of the interior of the housing, and the magnets are arranged inside the magnet yokes. The two ends of the carrier and the magnet yokes are connected in a mutually-embedded manner, thereby achieving a purpose that the carrier can move up and down in the two magnet yokes. The magnet yokes are each of a box groove structure and each have a first folded side and a second folded side, wherein the first folded side is provided with a magnet, and the second folded side is composed of two blades. The voice coil motor body and the magnet yokes adopt the mutually-embedded design, andthe voice coil motor body moves up and down in the two magnet yokes. The voice coil motor adopts a non-magnetic magnetic housing and the mutually-embedded magnetic protection scheme, improves the voice coil motor thrust, and reduces the volume of the voice coil motor.
Description
technical field [0001] The invention relates to the technical field of voice coil motors, in particular to a voice coil motor used for automatic focusing of a camera. Background technique [0002] Since the voice coil motor (Voice Coil Motor, VCM) has the advantages of simple structure, small size, low energy consumption, no noise, high acceleration, fast response, accurate displacement and low price, so currently for the camera automatic focusing device, Automatic focusing with voice coil motor structure is still the most cost-effective method. By fixing the optical lens on the rotor frame of the voice coil motor, the rotor acts as the power unit for moving the lens, and connects the rotor frame of the voice coil motor with the stator through the shrapnel. When the motor is energized, the rotor frame will move along the optical axis of the lens. Linear movement, so as to realize the automatic focusing function. The function of the carrier is to carry the lens and the coil ...
Claims
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IPC IPC(8): H02K41/035H02K11/01
CPCH02K11/01H02K41/0356
Inventor吴发权王万军高明
Owner辽宁中蓝光电科技有限公司