Patent ID: 8495667
Filing Date: 2013-07-23
Classification: G11B

Abstract:
1. An optical disc recording and/or reproducing device comprising: a drive for rotating an optical disc around an axis of rotation, a movable optical pickup unit and a frame having at least one guiding rod for guiding a displacement of said optical pickup unit in a substantially radial direction with respect to the axis of rotation, said guiding rod comprising a first guiding rod in parallel with a second guiding rod, both the first guiding rod and the second guiding rods being engaged by the optical pickup unit for guiding the displacement of the pickup unit, wherein the second guiding rod is provided with a protrusion, characterized in that the second guiding rod has two eccentric portions each being supported in the frame by means of a bearing, so that the guiding portion of the second guiding rod can be displaced perpendicularly to its longitudinal axis by rotating the second guiding rod, and the protrusion retaining the optical pickup unit in a locking position when the second guiding rod is in a predetermined rotational position, and wherein the second guiding rod is rotationally drivable by an electric drive motor through a worm gear, comprising a worm attached to the frame and an engaging wheel attached to the second guiding rod, in order to move the protrusion for either releasing or blocking the optical pickup unit, whereby the electric drive motor rotates the second guiding rod after the device has been started up in order to release the optical pickup unit, and whereby the electric drive motor rotates the second guiding rod into said predetermined rotational position after the optical pickup unit has moved and returned to said locking position.