Abstract: A disc device includes a first traverse chassis holding a first optical pickup unit which performs recording/reproduction of information on a first surface of a disc, a second traverse chassis holding a second optical pickup unit which performs recording/reproduction of information on a second surface of the disc, and first and second biasing members which bias the first and second traverse chassis, respectively, in directions of coming closer to each other. The first and second traverse chassis are coupled to each other so as to turn around a turning axis at a rear side of a housing and extending in a width direction of the housing. At least one of the first and the second biasing members is attached while being inclined with respect to each of a conveying direction of the disc, and a thickness and the width directions of the housing.

Abstract: A disc clamp and a spindle motor having the same is provided, the disc clamp according to an exemplary embodiment comprising: a disc clamp body; a first disc balancer projected from the disc clamp body in the horizontal direction and configured to have a first thickness; and a second disc balancer bent downwards from an end of the first disc balancer to fix the disc and configured to have a second thickness, wherein an angle between a horizontal surface of the first disc balancer and the second disc balancer is in the range of 92° to 95°.

Abstract: Provided is an optical disk drive including a turntable on which an optical disk is mounted and which rotates the optical disk, a chuck pulley movable in the direction of an axis of the turntable between a first pulley position spaced from the turntable and a second pulley position which is close to the turntable and in which the chuck pulley grips the optical disk together with the turntable, the chuck pulley being attracted toward the turntable by a magnetic force, and a pulley operating mechanism for moving the chuck pulley between the first pulley position and the second pulley position. The pulley operating mechanism, at the time of moving the chuck pulley between the first pulley position and the second pulley position, inclines the chuck pulley in relation to the turntable, and brings the chuck pulley closer to or away from the turntable.

Abstract: A disc-visible type disk drive apparatus is disclosed. The disk drive apparatus includes: a main body casing having a first slot provided at a first side surface to load a disc; a protection cover having a first cover provided on the first side surface of the main body casing, wherein the first cover covers a portion of the disc exposed outside the main body casing through the first slot and forms a passage through which the disc passes during loading and unloading; a disc detecting sensor disposed in the first cover which detects the disc; and a disc loading unit disposed in the main body casing and having a loading roller which is driven so as to load the disc if the disc is detected by the disc detecting sensor.

Abstract: There is provided a disk drive apparatus including a first chassis unit that has a first pickup base at which a first optical pickup has been disposed, and a second chassis unit that has a second pickup base at which a pulley supporting part has been provided and at which a second optical pickup has been disposed. A disk table on which a disk-like recording medium is loaded is disposed at the first pickup base. A support hole is formed in the pulley supporting part. A chucking pulley that sandwiches and holds the disk-like recording medium together with the disk table is supported by the pulley supporting part in a state of being inserted in the support hole. At the chucking pulley, provided are an escape part, a flange part, and a clamp part.

Abstract: There is provided a disk drive apparatus including a first chassis unit that has a pickup base at which an optical pickup and a disk table have been disposed, and a first base chassis to which the pickup base has been attached, and a second chassis unit that has a second base chassis and at which a chucking pulley has been disposed. A first rectifying plate part is provided at the first base chassis. A second rectifying plate part is provided at the second base chassis.

Abstract: There is provided a disk drive apparatus including a first chassis unit that has a first pickup base supported by the first base chassis through an elastically deformable insulator, and a second chassis unit that has a second pickup base supported by the second base chassis through an elastically deformable insulator. At least one of the first chassis unit and the second chassis unit is moved in a thickness direction of the disk-like recording medium, and the first pickup base and the second pickup base are connected to or separated from each other. Positioning parts for performing positioning of the first pickup base and the second pickup base at a time of connection are provided at the first pickup base and the second pickup base, respectively. The first pickup base and the second pickup base are connected to each other by magnetic forces of magnets.

Abstract: A compact disc (CD) player, which comprises playback substrates, a conveying roller, CD sensors, a CD stopper, a first trigger member, frame members, cam members and moving members, wherein the CD stopper has a major axis and abutting portions disposed at both ends of the axis; the first trigger member rotates when a minor-diameter CD stops at a mounting position on a turntable; the frame members receive the movement of the first trigger member; the cam members are coupled to the frame members; the moving members receive the rotation of the CD sensor and move along the outside diameter of a CD; the moving members are provided with clamping portions and abutted portions configured to be clamped with the abutting portions; and the cam members are provided with clamped portions configured to abut against the clamping portions.

Abstract: A disc-visible type disk drive apparatus is disclosed. The disk drive apparatus includes: a main body casing having a first slot provided at a first side surface to load a disc; a protection cover having a first cover provided on the first side surface of the main body casing, wherein the first cover covers a portion of the disc exposed outside the main body casing through the first slot and forms a passage through which the disc passes during loading and unloading; a disc detecting sensor disposed in the first cover which detects the disc; and a disc loading unit disposed in the main body casing and having a loading roller which is driven so as to load the disc if the disc is detected by the disc detecting sensor.

Abstract: A disk loading and unloading apparatus of an optical disk drive, the disk loading and unloading apparatus comprises: a chassis; a tray; a supporting frame pivoted on the chassis; a traverse; a spindle motor disposed on the traverse for supporting and rotating an optical disk; a sliding block slidably disposed on the chassis; and a cover. During the disk loading and unloading process, the sliding block drives the traverse and the spindle motor to move up and down to fix the optical disk on the spindle motor or to separate the optical disk from the spindle motor.

Abstract: The present document describes a vibration-reduced turntable adapted to receive a disc, the vibration-reduced turntable comprising: a frame; a first platter mounted on the frame and for receiving the disc, the first platter for rotation in a first direction; a second platter mounted on one of: the frame and the first platter, the second platter for rotation in a second direction; and a suspension system supporting the frame for reducing vibrations on the disc received by the first platter and for reducing vibrations of the frame.

Abstract: The clamping device of spindle motor is disclosed, wherein a case portion contacted by the other distal end of the arms is inclined due to depression of a distal end of the arms by the disk, such that the arms linearly moves into the case to allow the other distal end to further rotate upwards, whereby the disk can be easily inserted into the case regardless of size of the inner diameter of the disk.

Abstract: A disclosed disk clamping mechanism includes a turntable fixed on a rotational shaft of a spindle motor to rotate a flexible thin optical disk, a stabilizer member configured to suppress a run-out of the flexible thin optical disk by an applying aerodynamic force to the rotating flexible thin optical disk so as to stabilize the run-out of the rotating flexible thin optical disk, and a clamper movably supported in a center of the stabilizer member in a direction perpendicular to a surface of the flexible thin optical disk. In the disclosed disk clamping mechanism, the flexible thin optical disk is sandwiched between the turntable and the clamper such that the turntable and the clamper rotate the flexible thin optical member sandwiched in-between.

Abstract: An optical disc fixing device and an optical disc drive using the optical disc fixing device are provided. The optical disc fixing device is configured for fixing an optical disc thereto. The optical disc defines a circular mounting hole at the center portion. The optical disc fixing device includes a cylindrical clamping chassis, at least one latching piece, at least one elastic member, and a control member. The clamping chassis is substantially the same shape as the mounting hole of the optical disc and has a peripheral sidewall. The at least one latching piece together with the at least one elastic member are assembled within the clamping chassis. The control member is releasably assembled to the clamping chassis for extending the at least one latching piece from the peripheral sidewall of the clamping chassis to hold the optical disc.

Abstract: There is provided a tray including a tray main body that can be nipped by a driving roller rotatably driven and a plurality of driven rollers driven to rotate by making contact with the driving roller, the tray main body having a plate shape, a concave portion in which a thin plate shaped body can be set, the concave portion being formed in the tray main body, a fitting convex portion that is fitted in a fitting hole formed in the thin plate shaped body, the fitting convex portion being provided in the concave portion, and a plurality of elastic pieces for holding the thin plate shaped body by elastically making contact with an inner edge of the fitting hole, the elastic pieces being provided along an outer edge of the fitting convex portion.

Abstract: A disk device is provided with a pair of slide cam members that start movement when a disk is conveyed to a replayable position, and a pair of clamper lifters respectively having clamper support portions supporting a clamper. The clamper lifters are moved in opposite directions to each other in a horizontal direction orthogonal to a thickness direction of the disk device in conjunction with the movement of the pair of slide cam members. They are arranged so that the timings of the start of movement in the opposite directions to each other are different from each other. The clamper support portions have inclined surfaces in contact with an outer peripheral part of the clamper so as to move the clamper in the thickness direction of the disk device in accordance with the movement of the pair of clamper lifters in the opposite directions to each other.

Abstract: An apparatus for clamping an optical disc according to the present invention, if an optical disc loaded into a turntable of a spindle motor is clamped in an optical disc drive, keeps the clamper and the turntable of the spindle motor close to each other by using an elastic force delivered by an elastic member installed in an upper part of the clamper. Therefore, the present invention enables optical disc clamping operation and rotational operation of a spindle motor in a normal manner without employing an expensive magnet such as a clamper yoke, clamper magnet, and absorption magnet and thus efficiently reduces manufacturing costs of optical disc drives.

Abstract: An optical disc device comprises a disc clamper. The disc clamper is provided with: a first member provided with a first circular disc, and with a plurality of upstanding pieces formed with predetermined spaces therebetween along a circle concentric to the first circular disc, the upstanding pieces having an engaging claw at the distal end thereof; and a second member provided with a second circular disc in which are formed a plurality of through-holes into which the plurality of upstanding pieces are inserted, and with a plurality of peripheral walls formed with predetermined spaces therebetween along a circle concentric to the second circular disc. Rotation in a state where the upstanding pieces have been inserted into the through-holes through the spaces between the peripheral walls causes the engaging claws to engage the peripheral walls.

Abstract: A medium processing device is provided. A processor processes a plate-shaped medium. A tray has a storage for storing the medium and is movable between a first position where the medium is processed by the processor and a second position where the medium is mounted and removed from the storage. A moving mechanism moves the tray between the first position and the second position. A transporting mechanism mounts the medium in the storage and removing the medium from the storage. A restraining member restrains an upward movement of a front end of the tray that is moved to the second position by the moving mechanism.

Abstract: An electronic device includes a housing having top and bottom walls, and an optical disk drive disposed in the housing between the top and bottom walls and including a supporting plate, and a motor shaft disposed at the center of the supporting plate. An optical disk drive support module includes an upper support unit provided on the top wall and having a rotatable element disposed above the motor shaft, a lower support unit provided on the bottom wall below the motor shaft, a bracket connected to the optical disk drive and including top and bottom plates. When the optical disk drive is inserted into the housing, the top plate presses the rotatable element downwardly toward the motor shaft, and the bottom plate pushes the lower support unit upwardly toward the supporting plate. A rolling unit is provided on the top plate, and is in rollable contact with the rotatable element.

Abstract: An apparatus for loading disks and its method of orientating different disks includes housing, a print device, a drawer device, a base with multiple sets of sensor and a transport mechanism. The drawer device includes a disk tray, a driving mechanism, an attaching element, a swing element, an elastic element and a set of disk attachment. The transport mechanism is connected to the drawer device for moving disk tray upon the base. The transport mechanism through a controller automatically controls the various functions of the various components of the drawer device.

Abstract: An optical disc clamping device is disclosed. Two concentric rotators with inward/outward rotation are disposed in the inner ring of a stationary seat, and a number of protruded slide grooves support the indented slide base for sliding, such that the stationary seat, the two rotators and the pressing plate are directly suspended to move together. The two-stage rotation enlarges the descent distance of the clamping device and directly descends the pressing plate for clamping the optical disc stably.

Abstract: A drive device for an optical disc apparatus comprising: a lever arm for supporting a traverse chassis while allowing the traverse chassis to be raised and lowered; and a cam slider in cam engagement with the lever arm, the cam slider moving in a direction substantially orthogonal to a movement direction of the lever arm to cause the lever arm to move up and down; wherein the lever arm is provided with a boss projecting toward the cam slider, and a supported part supported by the cam slider in a chucked position of an optical disc; and wherein the cam slider is provided with a groove in engagement with the boss, and a support part for supporting the supported part in the chucked position of the optical disc.

Abstract: A disk loading apparatus includes a disk selecting unit rotatable through a rotating angle which corresponds to a size of an inserted disk, a pair of guide arms that are spaced from the disk selecting unit and are rotated by the disk, a small diameter loading lever that is rotated by one of the guide arms, a large diameter loading lever that is moved by the guide arms, a slide cam unit that is moved by the small diameter loading lever or the large diameter loading lever, and a chuck unit which is disposed between the guide arms and the disk selecting unit and is operated by the slide cam unit to chuck the disk. The small diameter loading lever and the large diameter loading lever are disposed at a same height above the guide arms.

Abstract: There is provided a disk clamping mechanism that supports a disk on a turntable unit under pressure by an attractive force produced between a clamping magnet and a damper constituted in a rotor unit, wherein the clamping magnet is directly fixed at the upper surface of a rotor frame including the turntable unit, and further, the upper surface of the clamping magnet is covered with a centering member for centering the disk.

Abstract: The present invention relates to an improve disk retrieving and releasing device and an automation disk burning system, wherein the improve disk retrieving and releasing device is opposite to an optical disk driver of a host and disposed on the host, such that the host and the improve disk retrieving and releasing device constitute the automation disk burning system. The improve disk retrieving and releasing device is adapted for automatically retrieving a disk from a disk tray when disk tray withdraws from the optical disk driver, and releasing and putting the disk into a disk collecting bucket when the disk tray gets back into the optical disk driver. The improved disk retrieving and releasing device comprises: a frame member and two clamping mechanisms, wherein the clamping mechanism comprises: a support member, a clamping member, and an interlocked rod.

Abstract: In a disc device including a disc loading mechanism for transporting a disc between an inside and an outside of the disc device, a frame acting as an exterior of the disc device is disposed with at least a motor as a power source, and a switch for controlling the rotation or the stop of the motor by switching on or off, and a pressing unit for switching on or off of the switch is disposed integrally with the frame. With the configuration, the rotation control of the motor as the power source is realized by a simple structure.

Abstract: Disclosed herein is a disk clamping device capable of preventing the slipping or eccentricity of an optical disk when it rotates at high speeds. The disk clamping device includes a turntable having a hub which is integrally provided in a central portion thereof and inserted into a central hole of an optical disk. A guide unit is accommodated in the turntable in such a way as to move linearly, and at least portion of the guide unit protrudes outwards from the hub and is supported 0by the optical disk. The guide unit is moved linearly by mounting force of the optical disk. A spring is provided in the turntable to elastically bias the guide unit in a direction opposite to a direction of insertion of the optical disk. A chucking plate presses the upper surface of the optical disk, thus securing the optical disk to the turntable.

Abstract: The clamping device of spindle motor is disclosed, wherein a case portion contacted by the other distal end of the arms is inclined due to depression of a distal end of the arms by the disk, such that the arms linearly moves into the case to allow the other distal end to further rotate upwards, whereby the disk can be easily inserted into the case regardless of size of the inner diameter of the disk.

Abstract: There is provided a tray including a tray main body that can be nipped by a driving roller rotatably driven and a plurality of driven rollers driven to rotate by making contact with the driving roller, the tray main body having a plate shape, a concave portion in which a thin plate shaped body can be set, the concave portion being formed in the tray main body, a fitting convex portion that is fitted in a fitting hole formed in the thin plate shaped body, the fitting convex portion being provided in the concave portion, and a plurality of elastic pieces for holding the thin plate shaped body by elastically making contact with an inner edge of the fitting hole, the elastic pieces being provided along an outer edge of the fitting convex portion.

Abstract: A disk drive includes: a pair of guide walls, which is arranged in the vicinity of the holder opening of a cartridge holder to define a direction in which a disk cartridge is supposed to be inserted; a first opening/closing lever, which has a first engaging portion that engages with a portion of the disk cartridge and which rotates while the disk cartridge is being inserted or ejected; and a second opening/closing lever, which has a second engaging portion that engages with another portion of the disk cartridge and which rotates while the disk cartridge is being inserted or ejected. The first and second opening/closing levers rotate so as to leave a broader gap between the first and second engaging portions than between the guide walls when the drive gets loaded with the disk cartridge, thereby opening a window in the disk cartridge.

Abstract: A low-cost disk device with which the same spindle motor and clamper can be used for different types of disk device, such as a DVD drive. A clamper includes a clamper main body and a plurality of positioning components. The clamper main body clamps a disk between itself and a spindle motor that holds and rotates the disk. The plurality of positioning components are formed on the clamper main body for the relative positioning of the clamper main body and each of the plurality of spindle motors in the radial direction.

Abstract: A disk device is provided with a pair of slide cam members respectively starting movement when a disk is conveyed to a replayable position, and a pair of clamper lifters respectively having clamper support portions supporting clamper, the pair of clamper lifters are moved in opposite directions to each other in a horizontal direction orthogonal to a thickness direction of the disk device in conjunction with the movement of the pair of slide cam members, and formed so that timings to start movement in the opposite directions to each other are different from each other, and the clamper support portions have inclined surfaces being contacted with an outer peripheral part of the clamper in accordance with the movement of the pair of clamper lifters in the opposite directions to each other so as to move the clamper in the thickness direction of the disk device.

Abstract: Disclosed is a clamping apparatus including a case having a side surface on which a plurality of arm holes are formed; an arm, which moves inside and outside the case through one of the arm holes while being restricted by the case and has an upper part and a lower part that are guided by the case; and an elastic member installed inside the case to elastically support the arm.

Abstract: A disc drive device able to increase the number of plastic flexible cantilever beams and improve a centering holding function of a disc to enable handling of high speed revolution, that is, a disc drive device having a plastic turntable mounted on a shaft of a spindle motor, wherein this turntable has a disc hole engagement projection provided with a ring-shaped projection and a plurality of centering portions which extend from this ring-shaped projection outwardly in a diametrical direction and have guide surfaces from which an edge of a disc hole easily slides off, a disc carrying portion, through holes formed defined between adjoining centering portions, and flexible cantilever beams extending in the through holes.

Abstract: A method and device for protecting slot-in optical disc drive are provided. A first sensing switch is for detecting the action of an unloading unit, a second sensing switch is for detecting the action of a receiving unit, and a third sensing switch is for detecting the action of a positioning bar. A disc is inserted as the optical disc drive is at the initial state, and the states of the first, second and third sensing switches are detected. The transmission unit is activated to automatically load the disc as all sensing switches are turned on, and whether the state of the third sensing switch changes is checked. When the state of the third sensing switch changes, the extraction of the disc is detected, so the transmission unit is immediately reversed to execute the unloading of the disc, so as to protect the optical disc drive.

Abstract: There is provided a disk recording and/or reproducing apparatus including: a disk mounting part; a clamp member holding a disk-shaped recording medium between the clamp member and the disk mounting part; and a support member movably supporting the clamp member. One of the disk mounting part and the clamp member has a magnet and the other has an attractable member attracted to the magnet. A rotating member is rotatably supported by the support member and a rotary elevating mechanism moves the rotating member up and down at a predetermined height by rotating the member. The clamp member is allowed to approach the disk mounting part by attracting the attractable member by a magnetic force of the magnet or to depart from the disk mounting part against a magnetic force of the magnet.

Abstract: There is provided a tray including a tray main body that can be nipped by a driving roller rotatably driven and a plurality of driven rollers driven to rotate by making contact with the driving roller, the tray main body having a plate shape, a concave portion in which a thin plate shaped body can be set, the concave portion being formed in the tray main body, a fitting convex portion that is fitted in a fitting hole formed in the thin plate shaped body, the fitting convex portion being provided in the concave portion, and a plurality of elastic pieces for holding the thin plate shaped body by elastically making contact with an inner edge of the fitting hole, the elastic pieces being provided along an outer edge of the fitting convex portion.

Abstract: A disk drive includes: a pair of guide walls, which is arranged in the vicinity of the holder opening of a cartridge holder to define a direction in which a disk cartridge is supposed to be inserted; a first opening/closing lever, which has a first engaging portion that engages with a portion of the disk cartridge and which rotates while the disk cartridge is being inserted or ejected; and a second opening/closing lever, which has a second engaging portion that engages with another portion of the disk cartridge and which rotates while the disk cartridge is being inserted or ejected. The pivots of the first and second opening/closing levers are arranged opposite to the holder opening. The first and second opening/closing levers rotate so as to leave a broader gap between the first and second engaging portions than between the guide walls when the drive gets loaded with the disk cartridge, thereby opening a window in the disk cartridge.

Abstract: The embodiments herein describe an apparatus and method for a reduced Z stack slot loading optical disc drive (ODD). In one embodiment, an optical disc mounting assembly can be used to chuck an optical disc to a turntable. The optical disc mounting assembly can include a hub spring for spring loading a hub and a clamping mechanism pivotally connected to the hub. In the described embodiment, in an extended position, the clamp is used to secure the optical disc to the turntable. The clamping mechanism can include a clamp pivotally attached to the hub at a pivot point. In the absence of the optical disc, the clamp is retracted and secured within a recess in the optical disc mounting assembly. In the presence of the optical disc, the mounting assembly chucks the optical disc to the turntable using the clamp and hub.

Abstract: A spin stand is disclosed comprising a spindle motor having a rotor. A first disk clamp is operable to clamp a first disk to the rotor, and a second disk clamp is operable to clamp a second disk to the rotor. An actuator is operable to clamp the second disk clamp in order to clamp the second disk to the rotor after the first disk has been clamped to the rotor.

Abstract: An optical disc drive with low vibration and low noise without risk of damage to components and injury caused by ejection of the disc tray with the rotating optical disc from a housing is provided by simple structure. In a disc-tray scheme of the optical disc drive, a brake member attached to the inside of the housing is placed to be in contact with the optical disc sliding thereon when the disc tray is in a predetermined position except the disc recording/reproducing position and the disc loading/unloading position, and to be connected to the disc tray when the disc tray is in the disc recording/reproducing position.

Abstract: A chucking device includes a disk support unit on which a disk is placed, a resin-made turntable arranged to directly or indirectly support the disk support unit from below, a metal member including a circular plate portion closely secured to a lower surface of the turntable, and a plurality of balls rollably arranged below the disk support unit and above the circular plate portion about a center axis in a circumferential direction. The turntable includes an antiskid member, a bottom rolling surface arranged to support the balls from below through the antiskid member and a cylindrical side rolling surface positioned radially outwards of the balls.

Abstract: A chucking mechanism is operable to detachably set thereon a discoid disk. The chucking mechanism includes a center case, a claw member, an elastic member, and a turn table. The claw member includes, a claw portion, and a movement support portion The center case includes a movement pivot receiving portion. A support point extending continuously from the movement pivot portion is arranged radially inwardly of the movement pivot portion at the movement support portion, and axially upward movement of the tip portion is substantially prevented since the support point makes contact with the movement pivot receiving portion, and a top surface of the movement support portion makes contact with a bottom surface of the top plate portion.

Abstract: It is an object of the present invention to provide a disk apparatus and a chucking method thereof capable of reducing the disk apparatus in thickness and size.

Abstract: A clamp 1 for a disk rotation driving device 3 has a centering hole 18 and a contact portion 17. The centering hole 18 is fitted to an outer circumference of a centering projection 19 of a hub 7 of the disk rotation driving device 3. A clamping screw 21 is screwed into an axial center of the hub 7 so that a fastening head 23 of the clamping screw 21 fastens the clamp 1 to the hub 7 and so that the contact portion 17 of the clamp 1 comes in contact with an information recordable magnetic disk 5 attached to the hub 7 and applies pressing load onto the disk 5 in a rotation axis direction. The clamp 1 includes a centering cylinder 13 bent in an axial direction. The centering cylinder 13 has a circumferential inner surface. The inner surface defines the centering hole 18. The rounded section 29 is provided along an edge of the centering hole 18 and has a radius smaller than the thickness of the centering cylinder 13. The fastening surface 25 is continuous to the rounded section 29.

Abstract: There is provided a disc chucking device. A disc chucking device according to an aspect of the invention may include: a chuck housing having an opening communicating with a mounting space therein; a chuck member having one end portion exposed to an outside of the opening; and a spring member mounted within the mounting space in order to exert an elastic force to the chuck member, wherein a portion of an outer circumferential surface of the chuck housing, on which the chuck member is disposed, has a smaller outer diameter than other portions thereof.

Abstract: A claw member includes at a radially inward surface thereof a protrusion inclined surface in order to minimize deformation occurring in an axial direction to an elastic member which is a coil spring. The protrusion inclined surface is preferably inclined, when a tip portion of the claw member is at an axially lowest point, to be substantially perpendicular to the central axis, or such that the further radially inward a portion thereof is the axially lower the portion is. By virtue of such configuration, the protrusion inclined surface minimizes deformation occurring to the elastic member in the axial direction.

Abstract: A movement pivot receiving portion which receives a movement pivot portion of a claw member and a movement support receiving portion which receives a movement assist portion of the claw member are arranged radially within a cylindrical portion of a center case. By virtue of such configuration, both receiving portions are designed with a greater degree of freedom within a space between an inner circumferential surface of the cylindrical portion and an outer circumferential surface of a base portion. Therefore, the claw member may be designed to have a preferable thickness while achieving a preferable movement of in an axial direction.

Abstract: It is an object of the present invention to provide a low-cost disk device with which the same spindle motor and clamper can be used for different types of disk device, such as a DVD drive. A clamper comprises a clamper main body and a plurality of positioning components. The clamper main body clamps a disk between itself and a spindle motor that holds and rotates the disk. The plurality of positioning components are formed on the clamper main body for the relative positioning of the clamper main body and each of the plurality of spindle motors in the radial direction.