Samsung Electro-mechanics Co., Ltd.

Ho Jun Yoo

Young Sun Yoo

Yeol Choi

Nam Seok Kim

Yun Yeong Park

Viatcheslav Smirnov

Hoon Do Heo

Shin Young Cheong

Pyo Jae Kim

Chang Keun Jun

There are provided an actuator driving apparatus, a camera module, and an electronic apparatus to selectively use a position and current control method and a current control method. The actuator driving apparatus includes a position controller and a current driver. The position controller is configured to receive a control input signal and output the control input signal or a position control signal, which is generated based on the control input signal, according to a mode signal. The current driver is configured to generate a current to drive an actuator according to the control input signal or the position control signal.

Actuator driving apparatus, camera module, and electronic apparatus

Disclosed herein is a disk chucking apparatus. The apparatus includes a central boss which is coupled to a rotating shaft of a motor, a guide which extends from the central boss outwards and is inserted into a center hole of a disk, and a chucking unit which extends from the central boss outwards. The chucking unit is elastically deformable inwards when pushed by the disk that is fitted over the guide. The chucking unit includes a lower horizontal part, a vertical part and an upper horizontal part. The lower horizontal part extends from the lower portion of the central boss outwards in the horizontal direction. The vertical part is bent from the outer end of the lower horizontal part upwards. The vertical part extends in a direction inclined outwards. The upper horizontal part extends from the upper end of the vertical part inwards in a horizontal direction.

Disk chucking apparatus

A motor may include: a rotor case having a coupling hook extending downward in an axial direction, secured to a shaft, and performing rotation; a sleeve supporting the shaft; and a sleeve housing having a projection provided at a front end portion of an upper part thereof in the axial direction and a guide passage provided along the projection such that the coupling hook moves along the guide passage while the sleeve is pressed and inserted into an inner circumferential surface thereof.

Motor with rotor case having coupling component

There is provided a motor including a sleeve rotatably supporting a shaft; a sleeve holder having the sleeve inserted thereinto and including fixing parts; and a base member including fixing counterparts corresponding to the fixing parts of the sleeve holder and fixedly coupled to the sleeve holder, wherein the sleeve holder and the base member have guide parts and guide counterparts respectively provided therein, the guide parts and guide counterparts having corresponding shapes and guiding the sleeve holder to a mounting position thereof.

Motor

There is provided a spindle motor including: a sleeve rotatably supporting a shaft; a sleeve holder supporting the sleeve and formed through a pressing process; a stator core fixedly mounted on an outer circumferential surface of the sleeve holder; and a pulling magnet fixedly mounted on an upper surface of the stator core, wherein the stator core includes a burr insertion stepped part formed in a lower portion of an inner diameter portion thereof.

Spindle motor with sleeve holder including cylindrical part, seating part, and coupling part

A spindle motor includes a rotor including a rotary shaft and magnets, a stator including a bearing, which supports the rotary shaft, and an armature corresponding to the magnets. The rotor is caused to rotate by an electromagnetic force generated by the magnets and the armature. The stator includes a plate having a stepped portion in a portion thereof, which faces the rotary shaft.

Spindle motor

There is provided a motor including a sleeve supporting a shaft; a sleeve holder allowing the sleeve to be fixed to an inner circumferential surface thereof and having a coupling rack protruding downwardly from a bottom surface in an axial direction; and a base plate having a sleeve holder insertion hole provided therein such that the sleeve holder insertion hole has a curvature defined by an inner circumferential surface thereof, in contact with an outer circumferential surface of the coupling rack of the sleeve holder, and a bottom surface thereof, in contact with a coupling portion of the coupling rack.

Disclosed herein is provided a spindle motor and a disk driver having the same. There is provided a spindle motor including: a sleeve rotatably supporting a shaft; a bush combined with the top portion of the shaft to be rotated together with the shaft; a rotor case including a cylindrical wall part combined with the outer peripheral surface of the bush; an air flow spreading part formed on the axial bottom part of the bush and spreading the air flow generated between the shaft and the sleeve to the radial outer side when the shaft is rotated; and a sealing part formed on the axial bottom portion of the bush and formed between the cylindrical wall part and the air flow spreading part to seal oil when the shaft is rotated.

Growing community of inventors

Gyunggi-do, South Korea

Ho Jun Yoo