Rotor balancer and disk driver with the rotor balancer

Application Number: 00107327
Application Date: 2000.05.08
Publication Number: 1273335
Publication Date: 2000.11.15
Priority Information: 1999/5/8 KR 16454/99; 1999/9/14 KR 19702/1999-UM
International: F16F15/22;F16F15/28
Applicant(s) Name: LG Electronics Inc.
Inventor(s) Name: So Wook-yong
Patent Agency Code: 11219
Patent Agent: wu yuqin
Abstract A rotor balancer and a disk driver having the rotor balancer are disclosed. The rotor balancer simplifies a construction of an auto balancing unit for automatically correcting a rotation unbalance occurring when a disk is rotated and of a mounting unit for accurately mounting the disk. Further, the rotor balancer reduces noise and vibration. The rotor balancer includes a ball case installed at a rotor for rotating a rotation member. The ball case has a circular racing space of which racing faces have different friction coefficients. The disk driver, having the rotor balancer, includes an insert unit on a turntable which is inserted into a central hole of the disk. A plurality of mounting spring pieces are formed at the insert unit and made of an elastic material so as to elastically support the disk, when it is mounted, so that the disk can be mounted accurately and firmly.