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 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 apparatus for clamping both large and small disks is provided, including a disk tray inside a base, an upper case and two clamping mechanisms above the disk tray and the base. Each clamping mechanism includes a slider and a gripper structure. The gripper structure further includes a first gripper, a second gripper, and a resilient element located between the first and the second grippers. The second gripper includes a first belt-ring and a second belt-ring. When the disk is loaded, under the force of the resilient element, the first belt-ring and the second belt-ring hold the disk onto the disk tray firmly. When the first gripper moves to a specific position of the groove on the upper case, the first gripper causes the second gripper to rotate so that the resilient element stops to exert the force. Hence, the first belt-ring and the second belt-ring rotate upwards so as to complete the loading process.

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.

Abstract: A chucking device comprises a retainer section for retaining a disc, a guiding section for guiding the disc to the retainer section, and a supporter for supporting the retainer section and the guiding section. The guiding section has a small enough angle for a guiding section side angle of inclination ?1 so as not to make contact with a upward facing disc, of a multilayer disc, thereby reducing a disc loading force.

Abstract: An optical disk drive with a noise reduction function, is used to read an optical storage media. The optical disk drive includes a turntable, a housing and a clamper. The turntable supports the optical storage media. An opening is formed on the housing. The camper is positioned on the opening, where the turntable rises upwards to connect with the clamper and lower towards a down position to separate form the camper. The clamper further comprises a base portion and a resilient arm. At least one concave section, which faces the turntable, is formed on the base portion. At least one resilient arm extends from the base and has a convex portion at the end thereof. The convex portion, which also faces the turntable, is positioned between the concave section and the turntable.

Abstract: An apparatus for clamping both large and small disks is provided, including a disk tray inside a base, an upper case and two clamping mechanisms above the disk tray and the base. Each clamping mechanism includes a slider and a gripper structure. The gripper structure further includes a first gripper, a second gripper, and a resilient element located between the first and the second grippers. The second gripper includes a first belt-ring and a second belt-ring. When the disk is loaded, under the force of the resilient element, the first belt-ring and the second belt-ring hold the disk onto the disk tray firmly. When the first gripper moves to a specific position of the groove on the upper case, the first gripper causes the second gripper to rotate so that the resilient element stops to exert the force. Hence, the first belt-ring and the second belt-ring rotate upwards so as to complete the loading process.

Abstract: A disc apparatus capable of automatic loading to load a disc and to unload a disc includes a plurality of arms for supporting outer peripheral edges of two kinds of discs with different diameters so that two discs can be transported, a loading slider, a clamping head moved up and down a plurality of times to clamp a disc by the loading slider when the loading slider is repeatedly moved forward and backward and a spindle motor for rotating the clamping head, wherein the spindle motor is driven by driving force previously set in response to the kind of the inserted disc at a proper time of the clamping operation period and which period is a period before and/or after the loading slider is operated in the reverse direction to thereby rotate the disc at a predetermined angle.

Abstract: An optical disc changer having a main body, a tray slidably installed in the main body, a roulette rotatably installed at the tray to accommodate a plurality of optical discs, an optical pickup device to selectively reproduce one of the optical discs accommodated on the roulette, and a damping unit to absorb shock when the tray is loaded in and unloaded from the main body to prevent defective reproduction of data from the optical disc.

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.