Abstract: An embossed component for positioning an article having a through hole includes a planar portion and an embossed portion projecting from a surface of the planar portion. The embossed portion is tapered toward a tip side and to be fitted into the through hole. The embossed portion includes a straight base end portion continuous with the planar portion and extending vertically with respect to the planar portion toward the tip side of the embossed portion, and an opening is at a tip of the embossed portion.

Abstract: An embossed component for positioning an article having a through hole includes a planar portion and an embossed portion projecting from a surface of the planar portion. The embossed portion is tapered toward a tip side and to be fitted into the through hole. The embossed portion includes a straight base end portion continuous with the planar portion and extending vertically with respect to the planar portion toward the tip side of the embossed portion, and an opening is at a tip of the embossed portion.

Abstract: The invention provides an optical disc apparatus having a dynamic damper mechanism which does not use any part for exclusive use for absorbing a shock of an optical pickup. The optical disc apparatus is provided with a chassis attached to a base chassis via a first elastic body, shafts provided on the chassis, an optical pickup moving on the shaft, and a weight attached to the chassis via a second elastic body, the weight is provided with stoppers on a moving path of the optical pickup.

Abstract: In a disc drive for achieving cooling of an electronic part therein, as well as, suppressing transmission of noises generated from a disc clamper, etc., a channel member 18 for introducing an outside air into an inside is disposed between a supporting member 15 and a top-cover 10, within an inside thereof is formed a vortex-like channel, extending from a center to an outer periphery thereof. At the center of the channel member 18 is formed an opening 19 for introducing the outside air into the inside of the disc drive, and on the top-cover 10 are provided plural numbers of openings 20 for taking the outside air into the channel member 18. When an optical disc 6 rotates, pressure generated on an upper surface thereof comes to be negative to the outside air, then the outside air is taken from the openings 20, through the vortex-like channel of the channel member 18 and the opening 19, into the inside of the drive, so as to pass through electronic parts, such as, an optical pickup, etc., thereby cooling them.

Abstract: An optical disc apparatus is constructed so that: a first member formed of a plate-shaped or sheet-shaped insulating material is disposed on a flexible printed-wiring board which interconnects a main circuit board and an optical pickup; a second member with a protruding portion is disposed at both sides of the wiring section of the flexible printed-wiring board, on the first member; the protrusions are coupled with a main circuit board by, for example, being inserted into the holes of a planar region on the main circuit board; and the second member presses the flexible printed-wiring board against the main circuit board from one side of the wiring board via the first member, thus fixing the wiring board.

Abstract: Guide members for guiding an optical pickup for movement in directions parallel to a diameter of an optical disk relative to the optical disk are formed of a metal, support members supporting the guide members on a chassis are formed of a resin, and heat transfer members formed of a metal are set in contact with the guide members and the chassis to achieve both the dissipation of heat generated by the optical pickup and the isolation of the optical pickup from vibrations. The guide support members attenuate vibrations propagating from the chassis toward the optical pickup, and heat generated by the optical pickup is dissipated through the heat transfer members into the chassis.

Abstract: An optical disc apparatus is constructed so that: a first member formed of a plate-shaped or sheet-shaped insulating material is disposed on a flexible printed-wiring board which interconnects a main circuit board and an optical pickup; a second member with a protruding portion is disposed at both sides of the wiring section of the flexible printed-wiring board, on the first member; the protrusions are coupled with a main circuit board by, for example, being inserted into the holes of a planar region on the main circuit board; and the second member presses the flexible printed-wiring board against the main circuit board from one side of the wiring board via the first member, thus fixing the wiring board.

Abstract: In an optical disk apparatus, a rack member includes: a first section formed with a protrusion-shaped engaging portion which engages with the feed screw of a lead screw member; a second section coupled with the base side of an optical pickup; and a third section integrally coupled with the first section and the second section, between both of these sections, and supporting the first section in a double-end-supporting state with respect to the second section, in a plane such as a rotational plane of the lead screw member. This construction enables smooth movement of the rack member in an optical pickup feed mechanism.

Abstract: The invention provides an optical disc apparatus having a dynamic damper mechanism which does not use any part for exclusive use for absorbing a shock of an optical pickup. The optical disc apparatus is provided with a chassis attached to a base chassis via a first elastic body, shafts provided on the chassis, an optical pickup moving on the shaft, and a weight attached to the chassis via a second elastic body, the weight is provided with stoppers on a moving path of the optical pickup.

Abstract: Guide members for guiding an optical pickup for movement in directions parallel to a diameter of an optical disk relative to the optical disk are formed of a metal, support members supporting the guide members on a chassis are formed of a resin, and heat transfer members formed of a metal are set in contact with the guide members and the chassis to achieve both the dissipation of heat generated by the optical pickup and the isolation of the optical pickup from vibrations. The guide support members attenuate vibrations propagating from the chassis toward the optical pickup, and heat generated by the optical pickup is dissipated through the heat transfer members into the chassis.