Patent Number: 8,575,793

Title: Voice coil motor with rollers

Abstract: A voice coil motor includes a mount, a movable unit and a number of rollers. The mount includes a through hole, a number of recesses opposing the through hole, and a number of magnetic blocks mounted in the through hole. The movable unit includes a barrel and a coil of wire surrounding the barrel. The movable unit is movably received in the through hole of the frame and surrounded by the magnetic blocks. The rollers are rotatably received in the respective recesses and come in contact with the barrel. The rollers hold the movable unit in position when no magnetic force needed to be applied on the movable unit.

Inventors: Chiang; Shun-Fan (Taipei Hsien, TW)

Assignee: Hon Hai Precision Industry Co., Ltd.

International Classification: H02K 33/00 (20060101); H02K 35/00 (20060101); H02K 41/02 (20060101)

Expiration Date: 1/05/12017