JP2009223934A5 - - Google Patents

Claims (6)

  On the chassis (8, 73) on which the pickup (9) is mounted, the motor (15), the operating gears (18, 78, 86), and switching means (23 for transmitting the power of the motor to the pickup or the operating gear) And a slide plate (26, 81) that moves in the disc insertion direction as needed by the rotational force of the operating gear to operate the disc reproduction assisting means involved in loading and unloading the disc (D). In the disc reproducing apparatus, a pivot fulcrum (52, 76, 83) is provided between the rack (29, 77, 85) and the contact portion (28, 75, 84), and the pivot fulcrum is used as the chassis. Trigger members (27, 71, 82) mounted to be freely rotatable and movable in the disk insertion direction, and before rotation of the disk, the rotation fulcrum is urged in the disk ejection direction and the rack is operated. And a meshing control means (51) for holding the meshing state when the trigger member moves in the disk insertion direction when the rack is meshed with the operating gear by the disk insertion and the trigger member moves in the disk insertion direction. And a disc reproducing apparatus that moves the slide plate in the same direction by following the trigger member when the trigger member moves in the disc insertion direction under the rotational force of the operating gear.   The engagement control means urges the rotation fulcrum of the trigger member in the disk ejection direction and the rotation urging means (50, 70) in the direction of separating the rack from the operating gear before inserting the disk. And a mesh holding means (49) for holding the engagement state when the trigger member moves in the disk insertion direction when the rack is engaged with the operating gear by inserting the disk. The disc playback apparatus described in 1.   The engagement holding means includes a sliding contact portion (33) provided on the trigger member and a sliding contact portion (47) provided on the chassis, and is in sliding contact when the trigger member moves in the disc insertion direction. 3. The disk reproducing apparatus according to claim 2, wherein the portion is brought into sliding contact with the sliding contact portion to maintain the meshed state of the rack and the operating gear.   4. The disk reproducing apparatus according to claim 3, wherein the slidable contact portion is formed in the chassis so as to be long in the disk insertion direction, and the slidable contact portion is a protrusion that appropriately slidably contacts the slidable contact portion. .   3. The disc reproducing apparatus according to claim 2, wherein the biasing means is a spring.   The trigger member has a shaft portion (30) having a circular cross section with the center as the rotation fulcrum, and has a retaining portion (31) at the tip of the shaft portion, and the chassis uses the shaft portion as a disk. The disc reproduction according to claim 1, further comprising a guide groove (41) for guiding in the insertion direction, and an attachment / detachment opening (42) into which the retaining portion can be inserted at one end of the guide groove. apparatus.