Voice coil motor, camera module, and connection method of coil and B spring of voice coil motor

Abstract

Embodiments of the invention disclose a voice coil motor, a camera module, and a connection method of a coil and a B spring of the voice coil motor, wherein the lens carrier of the voice coil motor isprovided with a metal terminal, the coil and the B spring of the voice coil motor are electrically connected through the metal terminal, both ends of the metal terminal are respectively provided withan upper end and a lower end, the middle portion of the metal terminal is embedded in the housing of the lens carrier, the top surface of the upper end and the top surface of the housing of the lenscarrier are on the same plane and contacted with a solder joint portion of the B spring, the lower end protrudes outside the housing of the carrier, and the coil ends at both ends of the coil are wound on the lower end. The voice coil motor provided by the embodiments of the invention achieves the effect of high connection strength between the coil and the B spring. The connection method providedby the embodiments of the invention eliminates the generation of the flux and achieves the effect of low production cost. The camera module provided by the embodiments of the invention achieves a clear focus.

Description

technical field [0001] The invention relates to the field of camera technology, in particular to a voice coil motor, a camera module, and a coil and B spring connection method of the voice coil motor. Background technique [0002] The zooming of the mobile phone camera is mainly achieved by driving the lens displacement through the voice coil motor set in the camera module. The voice coil motor includes the lens carrier, coil and B spring and other components. The driving principle is in a permanent magnetic field. Change the DC current of the coil to control the stretching position of the spring piece. The final power-on function of the voice coil motor is mainly realized by the welding conduction between the coil end of the inner coil of the voice coil motor and the B spring. Currently, the coil end and the B spring are connected. Before the B spring is welded and turned on, it is necessary to use a laser to remove the enamelled layer at the end of the coil to expose the m...

AI Technical Summary

Problems solved by technology

[0008] The purpose of the embodiments of the present invention is to provide a voice coil motor, a camera module, and a coil and B spring connection method of the voice coil motor to solve the above-mentioned problems of the existing voice coil motor

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