Objective lens driving unit and optical disc drive using the same

摘要

Provided is an objective lens driving unit in which a wire holder is coupled to a circuit board. In a conventional objective lens driving unit, a connection between a wire holder and a circuit board may deteriorate over time due to a deterioration of the connection. According to various aspects, a wire holder may be directly coupled to a circuit board by insert molding, thus improving the connection between the wire holder and the circuit board over time.

主权项

1. An objective lens driving unit comprising:
a movable part comprising an objective lens and a driving coil; a fixed part comprising a wire holder and permanent magnets corresponding to the driving coil; a circuit board directly coupled to the wire holder by insert molding; and suspension wires elastically supporting the movable part with respect to the fixed part, wherein ends of the suspension wires are fixed to the circuit board that is directly coupled to the wire holder, wherein the wire holder comprises: a body comprising the supporting surface; and a coupling portion extending away from the body and partially surrounding a portion of a second surface of the circuit board opposite to a first surface of the circuit board that is supported on the supporting surface.