Lens driving device, auto-focus camera, and mobile terminal with camera

Abstract

The invention aims at providing a lens drive device with good positioning accuracy, an automatic focusing camera and a mobile terminal with the camera when a plate spring part material is assembled. The lens drive device comprises a lens supporting body for movably supporting a lens in the direction of an optical axis, a fixing part configured on the peripheral side of the lens supporting body, a drive mechanism for moving the lens supporting body in the direction of the optical axis, and the plate spring part material with an inner side part fixed to the lens supporting body, an outer side part fixed to the fixing part and a plurality of wrist parts for connecting the inner side part with the outer side part. The lens drive device is characterized in that the fixing part is provided with a vertical wall part which is polygonal in the direction of the optical axis and is vertically arranged in the direction of the optical axis and used for containing the plate spring part material on the inner side; tongue parts extending to the outer side are arranged at the outer side part of the plate spring part material in correspondence to the corners of the vertical wall part, are in contained states on the inner side of the vertical wall part, are butted with the corners of the vertical wall part, and can be elastically deformed in the direction of the optical axis.

Description

technical field [0001] The present invention relates to a related lens driving device, an auto-focus camera device equipped with the lens driving device, and a mobile terminal device with a camera function equipped with the auto-focus camera. Background technique [0002] The lens driving device used in the auto-focus camera assembled in the mobile terminal device with camera includes: a cylindrical lens support body, which holds the lens; a coil, fixed on the periphery of the lens support body; a cylindrical ring mouth, configured On the outer circumference of the coil; the magnet is fixed on the inner circumference of the ring mouth and the coil, and is arranged facing each other; the plate spring member supports the lens supporting body movably in the direction of the optical axis of the lens. These parts are built on the base. Then, this lens driving device moves the lens support in the direction of the optical axis of the lens based on the electromagnetic force generat...

AI Technical Summary

Problems solved by technology

[0004] However, when assembling the lens driving device, in order to smoothly insert the leaf spring member between the columnar portions, a certain amount of clearance is required between the outer portion of the leaf spring member and the columnar portion.

Once there is such a gap, it is easy to cause a problem of deviation in the positioning position of the leaf spring member and the base member

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