ELECTROMAGNETIC DRIVING MODULE AND CAMERA DEVICE USING THE SAME

摘要

An electromagnetic driving device is provided, which includes a stationary portion, a movable portion adapted to support an element, a number of rolling balls, a driving magnet, a driving coil, and a magnetic attraction element. The stationary portion and the movable portion are arranged along a main axis. The rolling balls and the driving magnet are positioned between the stationary portion and the movable portion. The driving coil is arranged to correspond to the driving magnet and configured to enable the movement of the movable portion along a direction perpendicular to the main axis. The magnetic attraction element is arranged to correspond to the driving magnet. The magnetic force between the magnetic attraction element and the driving magnet is greater than the sum of the weight of the movable portion, the element, and the magnetic member.

主权项

1. An electromagnetic driving module, comprising
a movable portion adapted to support an element; a stationary portion, wherein the stationary portion and the movable portion are arranged along a main axis; a plurality of rolling balls positioned between the stationary portion and the movable portion; a driving magnet positioned between the stationary portion and the movable portion; a driving coil arranged to correspond to the driving magnet and configured to enable the movement of the movable portion along a direction perpendicular to the main axis; and a magnetic attraction element arranged to correspond to the driving magnet; wherein magnetic force between the magnetic attraction element and the driving magnet is greater than the sum of the weight of the movable portion, the element, and the magnetic member.