Abstract: Disclosed herein is a turntable assembly. The turntable assembly includes a turntable for mounting the optical disk thereon, and a chucking member which is contracted toward a center of an optical disk and holds the optical disk. A spring elastically biases the chucking member in a direction away from the center of the optical disk. An elastic support member supports the chucking member in a direction opposite an inserting direction, so that at least part of the elastic support member supporting the chucking member is elastically deformed in the inserting direction of the optical disk. A housing accommodates the chucking member, the spring, and the elastic support member therein. The elastic support member includes a support part which is spaced apart from the turntable to undergo elastic deformation in the inserting direction, and supports the chucking member.

Abstract: A disk chucking device is disclosed. In accordance with an embodiment of the present invention, the disk chucking device coupling a disk to a rotor of a motor such that the disk can be mounted and demounted can include a boss, which is coupled with the rotor, a first elastic body, which includes an inner circumference surrounding the boss and in which the first elastic body has elasticity in a radial direction from a center of the boss, a plurality of second elastic bodies, which are radially disposed from the first elastic body and in which the plurality of second elastic bodies are elastically supported by the first elastic body, and a plurality of chuck pins, which press the disk and in which each of the plurality of chuck pins is elastically supported by each of the plurality of second elastic bodies.

Abstract: A chuck pin and a disk chucking device equipped with the chuck pin are disclosed. In accordance with an embodiment of the present invention, the chuck pin fastening a disk by compressing an inner circumference of the disk includes a protruding part, which presses against the disk, and a body, in which a front part of the body is coupled to the protruding part and an inclined part is formed on a lower surface of the body such that the front part of the body can be rotated about a back part of the body as a pivot when pressure is applied to an upper surface of the protruding part. With this configuration, the chuck pin is kept from floating when the disk rotates, and the chuck pin can be easily tilted downward when the disk is loaded.

Abstract: A chucking device for a disk including a turntable on which an optical disk is seated, a housing provided on the turntable in such a manner as to be inserted into a center hole of the optical disk, a chuck pin having an end protruding outwards from the housing so that, when the optical disk is inserted into and released from the chuck pin, the chuck pin reciprocates from the center of the optical disk, a spring elastically forcing the end of the chuck pin outwards from the center of the optical disk, and a spring holder provided slantwise on the chuck pin such that the spring is held thereon so that an elastic force of the spring is applied inclined onto the chuck pin acting towards the direction of the turntable.

Abstract: A motor is disclosed, which includes: a rotor, to an inside of which a magnet is coupled, and from a center portion of which a tube-shaped cylindrical portion protrudes out; a shaft, which has one end coupled to the cylindrical portion, where the outer diameter of the one end of the shaft is greater than that of the other side; a holder, which supports the other end of the shaft, and which has a portion inserted in the cylindrical portion; a bearing, which is positioned between the holder and the other end of the shaft, and which rotatably supports the other end of the shaft; a stator, which is adjacent to the magnet, and which has a coil wound around a portion; and a base, which supports the holder. This motor may be utilized to better maintain verticality in the shaft of the motor and prevent wobbling in the disk.

Abstract: A turntable device and a disk driving device having the same are disclosed. A turntable device for securing a disk includes: a cone part, which receives the disk in a detachable manner; a base, on which the disk may be mounted, and on which a boss is formed; and a yoke, which is coupled to the boss, and which supports the cone part in a manner such that the cone part is separated from the boss and is capable of sliding. This turntable device can improve alignment between the rotation centers of the motor and the disk, even in high-speed rotations.

Abstract: A spindle motor, which includes a bearing to rotatably support a rotating shaft, a bearing holder to securely hold the bearing therein, a base to securely support the bearing holder thereon, a thrust washer aligned at the upper end thereof with the upper end of the base in the same horizontal plane and supporting the rotating shaft in a thrusting direction, a thrust washer cover to receive the thrust washer, and a bearing holder support securely installed between the thrust washer cover and the base and supporting the bearing holder. The bearing holder support is secured to the bearing holder and covers both the lower end of the bearing and part of the lower end of the bearing holder. The bearing holder support includes a protrusion inserted into a depression formed on the lower end of the bearing holder and an edge caulked to the base.

Abstract: This disk chucking apparatus may include: a chuck bass having a plurality of holding portions, a plurality of chuck pins which are inserted in the holding portions to be elastically supported, and protrudes out from the chuck base, an elastic fragment which is arranged to be symmetrical to the chuck pin with respect to the rotation center of the chuck base, and elastically supports a disk together with the chuck pin, and wherein the elastic fragment has an inclined surface inclined with respect to a direction of equipment of the disk, and the inclined surface are increased from smaller radius than the inner radius of the disk to larger radius than the inner radius of the disk. This disk chucking apparatus make it possible to align the centers of the chuck base and disk, and to decrease the force in mounting a disk.

Abstract: An optical disk apparatus is disclosed which includes a first printed circuit board, on which a first circuit pattern is formed; a rotor, on which an optical disk may be placed, and which is electrically connected with the first circuit pattern; a second printed circuit board, which is stacked adjacent to the rotor on a surface of the first printed circuit board, and on which a second circuit pattern is formed; a sensor unit, which is mounted on the second printed circuit board in electrical connection with the second circuit pattern, and which is configured to sense a rotation of the optical disk; and a support plate, which supports the first printed circuit board and the rotor. In this optical disk apparatus, a separate printed circuit board can be utilized to support the sensor unit, whereby manufacturing costs can be reduced and working efficiency can be improved.

Abstract: Disclosed herein is a turntable assembly. The turntable assembly includes a turntable for mounting the optical disk thereon, and a chucking member which is contracted toward a center of an optical disk and holds the optical disk. A spring elastically biases the chucking member in a direction away from the center of the optical disk. An elastic support member supports the chucking member in a direction opposite an inserting direction, so that at least part of the elastic support member supporting the chucking member is elastically deformed in the inserting direction of the optical disk. A housing accommodates the chucking member, the spring, and the elastic support member therein. The elastic support member includes a support part which is spaced apart from the turntable to undergo elastic deformation in the inserting direction, and supports the chucking member.

Abstract: The present invention provides a spindle motor 100, which comprises a bearing 115 for rotatably supporting a rotating shaft 151, a bearing holder 113 for securely holding the bearing 115 therein, a base 111 for securely supporting the bearing holder 113 thereon, a thrust washer 119 aligned at the upper end thereof with the upper end of the base 111 in the same horizontal plane and supporting the rotating shaft 151 in a thrusting direction, a thrust washer cover 121 for receiving the thrust washer 119 therein so as to cover the thrust washer 119, and a bearing holder support 123 securely installed between the thrust washer cover 121 and the base 111 and supporting the bearing holder 113. The bearing holder support 123 is secured to the bearing holder 113 and covers both the lower end of the bearing 115 and part of the lower end of the bearing holder 113.