Anti-torsion lens driving device

Abstract

The invention discloses an anti-torsion lens driving device. The anti-torsion lens driving device includes a square shielding shell, a fixing base, a second reed, a hollow lens carrier, a first reed, a box gasket and four arc-shaped magnets; the fixing base is provided with a dustproof circular ring which extends to the bottom of the inner hole of the lens carrier; the external circumference of the dustproof circular ring is uniformly provided with a plurality of positioning blocks; the bottom of the inner hole of the lens carrier is provided with positioning grooves which are corresponding to the positioning blocks; and the external circumference of the lens carrier is provided with triangular limiting blocks facing the inner sides of second guide columns. Through adopting the above technical schemes of the invention, the dustproof effect of the anti-torsion lens driving device can be improved, and the anti-torsion performance of the anti-torsion lens driving device can be further enhanced; when a lens is installed, damage to the first reed can be avoided, and the qualified rate of products can be improved; and when the lens carrier works, zooming is more stable, and high stability can be realized.

Description

technical field [0001] The invention relates to the field of camera lens driving, in particular to a torque-resistant lens driving device. Background technique [0002] A voice coil motor is a motor used in high-pixel miniature digital cameras with auto-focus function. Miniature digital cameras are not limited to applications such as mobile phones, computers, automobiles, security, digital cameras, tablet computers, and MP3 players, etc. The movement of the lens is usually driven by a motor, and the industry is accustomed to call it a lens drive. , The motor generally uses a voice coil motor, and the principle of the voice coil motor driving the lens movement comes from the horn. [0003] With the advancement of technology, the structure of miniature digital cameras is becoming smaller and smaller, and the requirements for voice coil motors are also getting higher and higher. After the lens drive device is miniaturized, the thickness of the reed is very small and the torsi...

AI Technical Summary

Problems solved by technology

After the lens drive device is miniaturized, the thickness of the reed is very small and the torsion resistance is poor. The lens carrier is mainly supported by the upper and lower reeds. The lens carrier needs to be screwed when installing the lens, which is easy to cause irreversible damage to the reed. The damage and the scrap rate are high, so it is necessary to strengthen the torsion resistance of the lens carrier to prevent it from rotating when the lens is installed

[0004] In addition, there is no dust-proof structure between the lens carrier and the base, and dust can easily enter the lens carrier and affect the lens in the lens carrier

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