Abstract: A spindle structure for an optical disc and an optical disc drive employing the spindle structure are provided. The spindle structure includes a spindle motor having a rotation axis, a spindle that is coupled to the rotation axis, and a sliding cone coupled to the spindle and inserted into a center hole of the optical disc. The sliding cone includes a plurality of hook-shaped guide rods extended toward the spindle, and the spindle includes guide holes, to which the plurality of hook-shaped guide rods are inserted into and coupled.

Abstract: A disk laminate includes thin disks laminated to each other, which are to be suctioned and conveyed; and spacers provided between the thin disks to prevent the thin disks from directly contacting each other, the spacers having air permeability.

Abstract: A turntable device and a disk driving device having the same are disclosed. The turntable device, for detachably securing a disk, may include: a centering part, in an inner perimeter of which slots are formed along a circumferential direction that provide an elastic force; and a base, on which a conical extension part is formed that is configured to slidably support an inner perimeter of the centering part. The turntable device can improve alignment between the centers of rotation of the motor and the disk, even for high-speed rotations.

Abstract: A spindle motor including a base, a bearing housing supported on the base, a bearing provided within the bearing housing, a rotating shaft rotatably supported by the bearing, a stator including a core fixed to the bearing housing and coils wound around the core, a rotor including a rotor yoke fixed to the rotating shaft, and a first magnet installed on the rotor yoke facing the stator, a turntable positioned on the rotor yoke, rotating together with the rotating shaft, a center guide member coupled to the rotating shaft at an upper side of the turntable, an elastic member disposed between the turntable and the center guide member for elastically supporting the center guide member.

Abstract: A data storage medium support member is produced by resin molding. The data storage medium support member includes an accommodating portion, a guide portion, and a gate cut portion. The accommodating portion accommodates a magnetic member around a central axis. The guide portion has a guide surface for guiding an inner edge of a disc, and is arranged radially outward of the accommodating portion. The gate cut portion is formed on a rear surface of the guide portion. The data storage medium support member can be produced by the resin molding while securing space for accommodating the magnetic member and preventing an increase in the axial dimension of the data storage medium support member.

Abstract: An optical disc clamping device is provided. A driving bar is moved away from a center hole to synchronously drive a first linking bar and a second linking bar. A first pivotal rod and a second pivotal rod are respectively driven by the first slider and the second slider to move towards the center hole to drive a carrier which carries a chucking disk disposed thereon to contact a spindle motor. A suppresser is fixed at the rim of the center hole to press on the chucking disk to clamp the disc stably.

Abstract: A disk chucking device includes a guide shaft for insertion into the central hole of a disk. A supporting member at the base side of the guide shaft supports a vicinity of the central hole at one surface of the disk. A cylindrical holding member approaches to or separates from the supporting member. A plunger moves along the holding member. A ball supporting member in the plunger stores a ball. An elastic member is locked by the plunger and the holding member, and biases to separate the plunger and the holding member in the axial direction of the guide shaft. A locking portion of the guide shaft prevents plunger movement in the axial direction of the guide shaft by making contact with the balls. An inside protrusion of the holding member supports the balls by surrounding together with the guide shaft when the balls are contacted with the locking portion.

Abstract: A spindle motor and a mounting device for mounting a disk in a spindle motor are provided. The mounting device allows for a reduced number of parts, a reduction in product cost, a disk to be smoothly slid and securely mounted to a turntable, and prevents deforming of a disk during mounting. A center guide member is formed of a plastic material, into which the rotating shaft is inserted at an upper end of the turntable, so that it is capable of rising and descending thereon. The center guide member supports the disk. A back yoke is fixed at an upper side of the center guide member on the rotating shaft, to prevent disengaging of the center guide member from the rotating shaft. An outer portion of the center guide member gradually widens toward a lower end thereof, so that the disk can be inserted more securely.

Abstract: A turntable of a recording medium drive can include a coupler having an inner circumference to which a rotating shaft is fixed, and an outer circumference onto which a disk is inserted; a table extending outwardly from the outer circumference of the coupler and for mounting the disk thereon; and first and second claws elastically supporting the disk by making contact with a clamping region of the disk. In an embodiment, the distance from the center of the rotating shaft to an outer surface of the first claws making contact with the clamping region of the disk is longer than the distance from the center of the rotating shaft to an outer surface of the second claw making contact with the clamping region of the disk.

Abstract: A spindle motor and a mounting device for mounting a disk in a spindle motor are provided. The mounting device allows for a reduced number of parts, a reduction in product cost, a disk to be smoothly slid and securely mounted to a turntable, and prevents deforming of a disk during mounting. A center guide member is formed of a plastic material, into which the rotating shaft is inserted at an upper end of the turntable, so that it is capable of rising and descending thereon. The center guide member supports the disk. A back yoke is fixed at an upper side of the center guide member on the rotating shaft, to prevent disengaging of the center guide member from the rotating shaft. An outer portion of the center guide member gradually widens toward a lower end thereof, so that the disk can be inserted more securely.

Abstract: A disk-chucking device comprises a pressing member including a circular groove which is provided around a circumference of the clamp member, and a clamping member mounted on a turning plate for clasping the circular groove of the pressing member. The turning plate provides a through hole at the center thereof which allows the pressing member passing through, and a plurality of first notch portions disposed along the circumference of the through hole. The turning plate is slidably connected to a mounting board through the clamping member. The turning plate can rotate with respect to the mounting board to move the pressing member vertically. Thus, the pressing member can be pressed onto and removed from a disk support of the displayer according to the rotation of the turning plate. The present disk-chucking device can chuck the disk securely regardless of the position of the disk player.

Abstract: A chucking method of a disk apparatus comprising a chassis outer sheath including a base body 10 and a lid 130, in which a front surface of the chassis outer sheath is formed with a disk inserting opening 11 into which a disk is directly inserted, a traverse 30 provided on the base body 10 holds a spindle motor 31A and a pickup 32, a slider mechanism 51 is disposed on one end side of the traverse 30, the slider mechanism 51 includes a cam mechanism which moves one end of the traverse 30 toward and away from the base body 10, and a slider cam mechanism 51 which moves the traverse 30 in an inserting/discharging direction of the disk, the other end of the traverse 30 is supported on the base body 10 by a fixing cam 34A, 34B, 36A, 36B, and the traverse 30 is moved by the slider cam mechanism 51 in the inserting/discharging direction of the disk and with this, the fixing cam moves the other end of the traverse 30 toward and away from the base body 10.

Abstract: A disk apparatus moves a traverse unit vertically, a spindle motor is allowed to approach a base body or a lid, a disk is pressed by the spindle motor and the lid, thereby mounting the disk on the spindle motor. When the spindle motor is moved upward, a tip end surface of a convex portion of the lid is inclined, the tip end surface of the convex portion of the lid and the spindle motor are substantially in parallel to each other, and the disk can stably be mounted.

Abstract: A low-profile chucking mechanism holds a disc recording medium on a turntable that has a plurality of first engaging teeth and a plurality of second engaging teeth. When the disc recording medium is to be mounted on a disc supporting surface of the turntable, the first engaging teeth are pushed radially inwardly of the rotational axis of the turntable by the edge of a central circular hole of the disc recording medium. When the first engaging teeth are moved, the second engaging teeth are biased in ganged relation to the first engaging teeth radially outwardly of the rotational axis of the turntable and engage the edge of the central circular hole of the disc recording medium mounted on the disc supporting surface, thereby pressing and holding the disc recording medium against the disc supporting surface.

Abstract: A high-precision positioning apparatus includes a fine driving unit for producing horizontal and small movements of a flat recording medium relative to an optical system, the medium being used for optically recording and reproducing information. The fine driving unit includes a frame-shaped unit body, a first driving frame inside the unit body, and a second driving frame inside the first driving frame and secured at a position adjacent to a magnetized portion of the recording medium. The first driving frame is movable relative to the unit body by fine driving devices in the horizontal direction of the recording medium, while the second driving frame is movable relative to the first driving frame by other fine driving devices in the horizontal direction of the recording medium and in the direction substantially orthogonal to the moving direction of the first driving frame, thereby producing horizontal and small movements of the recording medium.

Abstract: An optical disk device with release, with the optical disk device including a main unit which having an optical pickup unit to recording/reproducing data on/from an optical disk, wherein the main unit is lifted/lowered for coupling/uncoupling the optical disk on/from a turn-table, a main slider including a rack connected by a gear to a driving source and moving linearly to lift/lower the main unit, and a releasing unit, when a pin is inserted in the optical disk device, to disengage the gear from the rack and allow the main slider to move manually. Thus, the optical disk can be manually unloaded from the optical disk device.

Abstract: A chucking pulley clamps and chucks a recording medium in coaction with a disk table. The chucking pulley has a rotary slide knob and is rotatably supported on a support arm. The support arm has first and second lifting/lowering pins. A holder is mounted on the support arm for pressing the chucking pulley toward the disk table while in contact with an end of the rotary slide knob when the recording medium is in rotation. A spring is resiliently held against the first lifting/lowering pins. Moving members move the chucking pulley toward and away from the disk table. The moving members have retainers for retaining the first lifting/lowering pins in an acting position when the recording medium is chucked. The first lifting/lowering pins retained in the acting position deform the spring to bias the support arm and the holder toward the disk table.

Abstract: There is provided a thin optical disk device having a slot-in mechanism which is able to smoothly carry out operations of clamping and releasing an optical disk, including an optical pickup which carries out reading and/or writing from/to the optical disk, a turntable which places the optical disk at an operating position of the optical pickup and rotates the optical disk, a clamper which is arranged at an approximate center of the turntable and can freely advance and retreat in a direction of a diameter of the optical disk, and a device for clamping an inside diameter section of the optical disk at a location directly above the clamper with the optical disk being held by sandwiching the optical disk and for pressing the inside diameter section from the side of a non-writing surface of the optical disk and clamping the inside diameter section to the clamper.

Abstract: An optical disk reading device has a substrate below which a CD is loaded, a base element fixed to an opening of the substrate, a movable element, a rotation part that movably connects the movable element to the base element in a manner such that the movable element moves rotationally and vertically with respect to the base element, and a clamp coupled to the movable element and extending through the opening of the substrate when the movable element moves with respect to the base element.