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US 9,058,822 B2Granted
Objective lens driving unit and optical disc drive using the same
AssigneeToshiba Samsung Storage Technology Korea Corporation
InventorsYoung-bin Lee, Soo-hyun Baek
Life of this patent
Estimating the term…
Abstract
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.
Claims17
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.
5 more elements
An objective lens driving unit comprising:
- a movable part on which an objective lens is disposed;
- a fixed part comprising a wire holder;
- a circuit board directly coupled to the wire holder by insert molding;
- and
- suspension wires each comprising a first end fixed to the movable part and a second end fixed to the wire holder that is directly coupled to the circuit board, wherein the wire holder comprises:
- a body;
- and
- a coupling portion extending away from the body to at least partially surround a portion of the circuit board.
5 more elements
An optical disc drive comprising:
- a spindle motor configured to rotate an optical disc;
- and
- an optical pickup unit configured to access the optical disc while sliding in a radial direction of the optical disc so as to record/read information, the optical pickup unit comprising an objective lens driving unit comprising:
- a movable part on which an objective lens is disposed;
- a fixed part comprising a wire holder;
- a circuit board directly coupled to the wire holder by insert molding;
- and
- suspension wires comprising ends fixed to the movable part and the other ends fixed to the wire holder that is directly coupled to the circuit board, wherein the wire holder comprises:
- a body;
- and
- a coupling portion extending away from the body to at least partially surround a portion of the circuit board.
8 more elements
Dependencies are inferred from the claim text.