Lens holder driving device capable of easily mounting upper elastic member to outer yoke

摘要

A lens holder driving device includes a lens holder in which a lens assembly is mounted, a driving coil fixed to the lens holder at outside circumference thereof, a magnet opposite to the driving coil, a yoke including the magnet, an elastic member supporting the lens holder in a direction of an optical axis shiftably, and a base disposed at a lower side of the lens holder. The yoke includes an outer yoke including the magnet at an inner wall surface thereof. The elastic member includes an upper elastic member disposed at an upper side of the lens holder. The upper elastic member is mounted to the inner wall of the outer yoke in a state where the upper elastic member is positioned and fitted to a spacer.

主权项

1. A lens holder driving device comprising:
a lens holder in which a lens assembly is mounted; a driving coil fixed to said lens holder at an outside circumference thereof; a magnet opposite to said driving coil; a yoke including said magnet; an elastic member shiftably supporting said lens holder in a direction of an optical axis of said lens assembly; and a base disposed at a lower side of said lens holder, wherein said yoke comprises an outer yoke including said magnet at an inner wall surface thereof, wherein said elastic member comprises an upper elastic member disposed at an upper side of said lens holder, said upper elastic member being mounted to the inner wall of said outer yoke in a state where said upper elastic member is positioned and fitted to a spacer, wherein said spacer comprises a plurality of protrusions, wherein said upper elastic member has a plurality of through holes through which the plurality of protrusions pass, wherein said upper elastic member is positioned and fitted to said spacer by inserting the plurality of protrusions in the plurality of through holes which correspond thereto, wherein said upper elastic member is mounted to said spacer by heat-welding tips of the plurality of protrusions, and wherein said yoke further comprises an inner yoke which is heat-welded to said spacer.