Samsung Electro-Mechanics Co., Ltd.

Dong-Woo Rhee

Viatcheslav Smirnov

Dong-Yeon Shin

Sang-Kyu Lee

Pyo Jae Kim

Young-Sun Yoo

A disk drive is disclosed. The disk drive can include includes a spindle motor, which can rotate a disk; an encoder, which can detect the rotational speed of the disk; an encoder holder, which secures the encoder; and a base plate, which supports the spindle motor, and in which a holder indentation is formed for inserting the encoder holder in. Certain embodiments of the invention allow easy height adjustments for the encoder holder, so that the encoder may maintain a particular distance from the disk, and also allow the encoder to be fitted onto the base plate, even in cases where the base plate has a limited mounting area.

Disk drive with encoder holder indentation

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.

Optical disk apparatus

A disk chucking device and a disk driving device having the same are disclosed. The disk chucking device may include: a chuck base, on which a boss is formed; chuck chips inserted in the chuck base in a manner such that the chuck chips protrude out from the chuck base; an elastic member, which elastically supports a pair of adjacent chuck chips towards an outer side of the chuck base; and a protrusion portion, which is formed on a bottom of the boss, and which supports the elastic member. The disk chucking device can improve the environment of the elastic members that support the chuck chips, to improve the alignment between the rotation centers of the disk and the chuck base.

Disk chucking device and disk driving device having the same

An optical disk apparatus includes a printed circuit board; a stator fixed on the printed circuit board; a rotor configured to receive an optical disk thereon, the rotor being rotated by an electromagnetic interaction with the stator; and a sensing part fixed on the printed circuit board and sensing a rotation of the optical disk. Here, the sensing part includes a sensor; a terminal connecting the sensor with the printed circuit board electrically; and a plastic mold fixing the terminal thereto. The optical disk apparatus has a reduced number of components to allow reduced production costs, and has a simple manufacturing process to allow reduced production times and defect rate.

Growing community of inventors

Suwon-si, South Korea

Dong-Woo Rhee