Patent ID: 8907532

Claim:
A voice coil motor (VCM) comprising: a fixed assembly comprising a fixed bracket and a coil group, the fixed bracket being substantially triangular in shape and comprising three sidewalls supporting the coil group thereon, the fixed bracket defining a first receiving cavity between the three sidewalls; and a movable assembly comprising a movable barrel movably received in the first receiving cavity, and a magnet group, the movable barrel being also substantially triangular in shape and comprising three external surfaces, wherein the coil group comprises three coils, each sidewall of the fixed bracket defines a receiving recess passing through a corresponding sidewall of the fixed bracket for respectively receiving a corresponding coil, the magnet group comprises three magnets, each external surface of the movable barrel defines a groove receiving a corresponding magnet, each magnet is spatially opposite to a corresponding coil, wherein the fixed bracket comprises a top surface and a bottom surface facing away from the top surface, the first receiving cavity passes through the top surface and the bottom surface, the VCM further comprises a cover, the fixed bracket comprises three first locating members arranged on the top surface, the cover comprises an upper surface, a lower surface facing away from the upper surface, and three second locating members on the lower surface, the second locating members spatially correspond to the respective first locating members, the cover is assembled on the top surface of the fixed bracket through the engagement of the three first locating members with the three second locating members.