Class / Patent application number | Description | Number of patent applications / Date published |
720701000 | Having balancer | 8 |
20080229348 | OPTICAL DISC DRIVE - An optical disc drive includes a traverse deck having left and right sides to be balanced. The optical disc drive includes a main deck, a tray, a turntable, an optical pickup, a traverse deck, and a balancer. The optical pickup is mounted movably in the back-and-forth direction to emit light to an optical disc placed on the turntable to read and write information from and to the optical disc. On the traverse deck, the turntable is mounted at the front side of the traverse deck and the optical pickup is mounted movably in the back-and-forth direction. The balancer is mounted on the traverse deck to balance the weights of the left and right sides of the traverse deck. | 09-18-2008 |
20110047562 | SPINDLE MOTOR HAVING BALL BALANCER - Disclosed is a spindle motor including a turn table on which a disk is mounted; a rotation shaft that is a rotational center of the turn table; and a ball balancer including a lace formed on the turn table and a ball stored in the lace in order to reduce a rotation vibration of the disk; wherein a gap Gr formed between the ball contacting an inner surface of the lace adjacent to the rotation shaft and an outer surface of the lace facing the inner surface is about 10% to 20% of the diameter of the ball. | 02-24-2011 |
20140020000 | DISC CLAMP WITH BALANCERS PROVIDING IMPROVED DURABILITY AND BALANCE AND SPINDLE MOTOR HAVING THE SAME - 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°. | 01-16-2014 |
720702000 | Having balls | 5 |
20090125930 | Auto-balancing device, turntable device, and disc driving device - An auto-balancing device, as well as a turntable device and a disc driving device equipped with the auto-balancing device are disclosed. The auto-balancing device, which includes a housing, which is coupled with a rotating body, and in which an annular insertion groove is formed; a correcting ring, rotatably inserted in the insertion groove; and multiple correcting balls, positioned between the correcting ring and an outward inwall of the insertion groove, can reduce noise and vibration for a rotating body during acceleration and deceleration and during high-speed rotations. | 05-14-2009 |
20090150915 | Spindle Motor - Provided is a spindle motor. The spindle motor includes a rotatable shaft, a stator, a rotor, and a turntable. The stator is positioned around the shaft. The rotor includes a rotor yoke coupled to the shaft. The rotor is rotated with the shaft integratedly by a reaction with the stator. The turntable is coupled to the shaft. The rotor yoke and the turntable are coupled to each other and are fixed to the shaft. | 06-11-2009 |
20090307717 | Spindle Motor - Disclosed is a spindle motor comprising: an integral turntable including: a table on which a rotating body to be installed, and an inner side wall and an outer side wall formed to be recessed upwards at a portion therebetween on a lower surface of the table so that a predetermined hollow is formed, a surface of thereof being formed slant; a ball cover for covering a ball inserted into the hollow and the hollow; a rotation shaft an upper portion of which is inserted into a center of the integral turntable; a bearing supporting a lower portion of the rotation shaft; a coil formed on an outside of the rotation shaft; and a magnet formed on an outside of the coil. | 12-10-2009 |
20110119692 | BRUSHLESS MOTOR HAVING CHUCKING MECHANISM, AND DISK DRIVING DEVICE HAVING THE BRUSHLESS MOTOR - A space for accommodating therein a portion of an optical pickup mechanism is arranged below a disk loading portion of a turn table member of a chucking mechanism of the present invention. The space is arranged axially below a disk mounting surface. Since such space is provided, a recording/reproducing portion will be allowed to move closer to a brushless motor, and therefore a second lens arranged further away from the brushless motor will be allowed to move radially inward of a recording/reproducing area of an optical disk. | 05-19-2011 |
20110296448 | TURNTABLE FOR SPINDLE MOTOR AND SPINDLE MOTOR HAVING THE SAME - A spindle motor having a turntable is disclosed, the spindle motor including: a bearing having a rotation hole; a bearing housing accommodating the bearing; a stator including a core secured at a periphery of the bearing housing and a coil wound on the core; a rotation shaft rotatably coupled to the bearing; a rotor coupled to the rotation shaft and including a magnet facing the core; a turntable body coupled to the rotation shaft and formed with a round groove at a bottom surface facing an upper surface accommodated by a disk; and a turntable including at least one ball accommodated in the round groove, where a rolling frictional coefficient between the turntable and the ball is in the range of 0.12˜0.16. | 12-01-2011 |