Patent application number | Description | Published |
20110265106 | Motor and disk driving device equipped with motor - There are provided a motor and a disk driving device equipped with the motor. The motor may include a core on which a coil is wound, a rotor having a magnet generating an electromagnetic force through an interaction with the coil, and rotating a shaft, a sleeve housing including an inner diameter part to which a sleeve supporting the shaft is press-fitted, a core seating part extended outside in an outer diameter direction from the inner diameter part, and an outer diameter part extended to an axial lower side of the sleeve from the core seating part, and a base plate including a strength reinforcement part formed therein, the strength reinforcement part being brought into contact with the outer diameter part and at least one part of an inner surface of the core seating part. | 10-27-2011 |
20110265108 | Disk chucking apparatus, motor and disk driving device equipped with motor - There is provided a disk chucking apparatus according to an exemplary embodiment of the present invention, including: a centering case fixed on the inner peripheral surface of a disk; and a claw formed in the centering case and including a contact unit which rotates in a horizontal direction at the time of mounting the disk and is introduced into the centering case to elastically support the inner peripheral surface of the disk. | 10-27-2011 |
20120017225 | Motor and optical disc drive using the same - There are provided a motor in which a coupling structure between a sleeve holder and a base plate is improved to thereby reduce manufacturing costs and manufacturing process of the motor, and to an optical disc drive using the same. The motor may include a base plate including at least one protrusion supporting part formed therein; and a sleeve holder including a cylindrical shaped body part to which a sleeve is fastened in an inside of the sleeve holder, an extension part protruded such that an outer diameter is extended along an outer circumferential surface of the body part, and a flange part vertically protruded in an outer diameter direction from a lower end portion of the extension part so as to make surface contact with an upper surface of the base plate, wherein the sleeve holder is fastened to the base plate while an outer circumferential surface of the protrusion supporting part is brought into contact with an inner circumferential surface of the extension part. | 01-19-2012 |
20120017226 | Motor and optical disc drive using the same - There is provided a motor with an improved sleeve holder and base plate combining structure and an optical disc drive using the same. The motor according to the present invention includes a base plate having a plate shape; a sleeve holder including a cylindrical body part having a sleeve fastened thereinto and a flange part formed to be horizontally protruded in an outer-diameter direction from the lower end portion of the body part to surface-contact the upper surface of the base plate. | 01-19-2012 |
20120017228 | Motor and disk drive device having the same - There is provided a motor including: a rotor case having a chucking device, on which a disk is mounted, press-fitted and coupled thereto; and disk support members mounted on an upper surface of the rotor case to support a bottom surface of the disk, and having each of flow path portions therebetween allowing for airflow in a space between the disk and the rotor case, wherein a push portion is disposed in at least one of the rotor case and the disk support members to accelerate the airflow through the flow path portions when the rotor case rotates. | 01-19-2012 |
20120047523 | Spindle motor and disk driver having the same - 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. | 02-23-2012 |
20120180078 | DISC CHUCKING APPARATUS, MOTOR AND DISC DRIVING DEVICE EQUIPPED WITH MOTOR - The present invention relates to a disc chucking apparatus having claws that horizontally move and provide elasticity to improve performance in centering and chucking a disc. The disc chucking apparatus includes: a centering base to which an inner circumferential surface of a disc is fixed; a plurality of chuck chips arranged at regular intervals along an outer circumferential surface of the centering base; and a plurality of elastic support parts disposed to be opposite to the chuck chips on the centering base, rotating horizontally when the disc is mounted, and pressing the inner circumferential surface of the disc in an outer diameter direction thereof. | 07-12-2012 |
20120301333 | PIEZOELECTRIC TYPE COOLING DEVICE - There is provided a piezoelectric type cooling device including: a housing having an internal space formed by combining an upper housing and a lower housing and having openings allowing the internal space to be in communication with the atmosphere to allow air to be introduced thereinto and discharged therefrom; a diaphragm provided to traverse the internal space of the housing to divide the internal space into upper and lower blower chambers; and a piezoelectric actuator provided on at least one surface of the diaphragm to provide vertical driving force to the diaphragm. | 11-29-2012 |
20130106224 | BASE ASSEMBLY FOR MOTOR AND FAN MOTOR INCLUDING THE SAME | 05-02-2013 |
20130119801 | BEARING ASSEMBLY AND FAN MOTOR INCLUDING THE SAME - There is provided a bearing assembly including: a sleeve supporting a rotation of a shaft via dynamic fluid pressure generated in oil interposed therebetween; a boss rotating together with the shaft; and a sealing part including an oil sealing part disposed above the sleeve to seal the oil between the oil sealing part and the shaft and a gap forming part extended upwardly in an axial direction from the oil sealing part to form a gap preventing a leakage of the oil between the gap forming part and the boss. | 05-16-2013 |
20130239131 | MOTOR HAVING A DISK SUPPORT MEMBER AND A DISK DRIVE DEVICE HAVING THE SAME - A motor including: a rotor case having a chucking device, on which a disk is mounted, press-fitted and coupled thereto; disk support members mounted on an upper surface of the rotor case to support a bottom surface of the disk, and having each of flow path portions therebetween allowing for airflow in a space between the disk and the rotor case; and a push portion disposed in at least one of the rotor case and the disk support members to accelerate the airflow through the flow path portions when the rotor case rotates. | 09-12-2013 |
20140028153 | VIBRATION ACTUATOR - There is provided a vibration actuator including: a housing providing an internal space and including holes formed to allow the internal space to be in communication with the outside; a diaphragm disposed to separate the internal space into first and second chambers; a mass body coupled to the diaphragm; and a piezoelectric element coupled to one inner surface of the housing and disposed under the mass body. | 01-30-2014 |
20140077661 | VIBRATING ACTUATOR - There is provided a vibrating actuator including: a housing including an inner space; a piezoelectric element mounted on a portion of an inner surface of the housing; a mass body disposed above the piezoelectric element; a first elastic member disposed between the piezoelectric element and the mass body to elastically support the mass body; and a second elastic member having one end joined to the housing and the other end joined to the mass body to elastically support the mass body. | 03-20-2014 |
20140091660 | MOTOR - There is provided a motor including: a sleeve rotatably supporting a shaft via a lubricating fluid; a base plate having the sleeve fixed thereto; a stator coupled to the base plate and including a core having a coil wound therearound in order to generate rotational driving force; and a rotor fixed to the shaft to be rotatable with respect to the stator and including a magnet facing the core, wherein the base plate includes a fixing part having the sleeve fixed thereto, an extension part extended from one end of the fixing part in an outer diameter direction, a seating part extended from one end of the extension part upwardly and downwardly in an axial direction, and a body part extended from the seating part in the outer diameter direction. | 04-03-2014 |
20140160593 | SPINDLE MOTOR HAVING ENHANCED BEARING RIGIDITY AND INCREASED STORAGE SPACE FOR LUBRICATING FLUID AND HARD DISK DRIVE INCLUDING THE SAME - There is provided a spindle motor including: a shaft including a body portion and an extending portion extending from an upper portion of the body portion in an outer radial direction; a sleeve rotatably supporting the shaft; a rotor rotating in conjunction with the shaft and having a stopper portion facing an outer circumferential surface of the sleeve; and a cover plate coupled to the sleeve, while maintaining a gap with lower portions of the shaft and the sleeve, wherein the cover plate includes an airtight portion disposed below the shaft and the sleeve, an inner wall portion extending from the airtight portion in an axial direction and coupled to an outer circumferential surface of the sleeve, an outer wall portion coupled to a base member, and an upper wall portion connecting an upper end of the inner wall portion and an upper end of the outer wall portion. | 06-12-2014 |
20140160594 | SPINDLE MOTOR AND HARD DISK DRIVE INCLUDING THE SAME - There is provided a spindle motor including: a shaft including a body portion having a fixing recess formed on a lower portion thereof, a flange portion extending in an outer radial direction from an upper portion of the body portion, and a first insertion portion extending downwardly from the flange portion in an axial direction; a lower thrust member including a fixed portion inserted into the fixing recess, a disk portion extending from the fixed portion in an outer radial direction, and first and second protrusion portions extending from the disk portion in the axial direction; a base member coupled to the second protrusion portion; and a rotating member forming a bearing clearance with the shaft and provided to be rotatable with respect to the shaft. | 06-12-2014 |
20140177094 | SPINDLE MOTOR AND HARD DISK DRIVE INCLUDING THE SAME - There is provided a spindle motor including a sleeve rotatably supporting a shaft, a rotor coupled to an upper end of the shaft and rotating together with the shaft, a stopper part coupled to a main wall part protruding from one surface of the rotor and facing an outer peripheral surface of the sleeve, a cover plate coupled to the sleeve while maintaining a clearance between the cover plate and lower portions of the shaft and the sleeve, a base member coupled to the cover plate, and a stator holder fixedly disposed on the base member. | 06-26-2014 |
20140183999 | SPINDLE MOTOR - There is provided a spindle motor including: a rotating member including a shaft having a fixation groove provided in a lower portion thereof, a hub base extended from an upper end of the shaft in an outer radial direction, and a magnet support part extended downwardly from an outer edge of the hub base in an axial direction; a sleeve rotatably supporting the rotating member and including a reception groove depressed downwardly from an upper surface thereof in the axial direction; and a stopper member including a fixation part inserted into the fixation groove and a flange part extended from the fixation part in the outer radial direction, wherein the hub base includes a protrusion part protruding from one surface of the hub base and received in the reception groove. | 07-03-2014 |
20140184000 | SPINDLE MOTOR - There is provided a spindle motor including: a sleeve rotatably supporting a shaft; a rotor coupled to an upper end of the shaft and rotating in conjunction with the shaft; a stopper portion coupled to a main wall portion protruded from one surface of the rotor and facing an outer circumferential surface of the sleeve; a stator holder having a fixed portion coupled to an outer circumferential surface of the sleeve, an installation portion to which a core having a coil wound therearound is fixed, and a connection portion connecting an upper end of the fixed portion and an upper end of the installation portion; and a base member fixedly coupled to the stator holder. | 07-03-2014 |
20140184001 | SPINDLE MOTOR - There is provided a spindle motor including a shaft including a body part and an extension part extended from an upper portion of the body part in an outer diameter direction, a sleeve rotatably supporting the shaft, and a rotor rotating together with the shaft and including a stopper part facing an outer peripheral surface of the sleeve, wherein the extension part and the rotor are coupled to each other outwardly of the outer peripheral surface of the sleeve in the outer diameter direction. | 07-03-2014 |
20140185160 | SPINDLE MOTOR HAVING COUPLING MEMBER BETWEEN BASE MEMBER AND CORE AND HARD DISK DRIVE INCLUDING THE SAME - There is provided a spindle motor including: a fluid dynamic pressure bearing assembly; a base member coupled to the fluid dynamic pressure bearing assembly; and a core fixedly coupled to the base member and having a coil wound therearound, wherein the base member has a disk portion and a coupling portion extending from an inner edge of the disk portion upwardly in an axial direction, one surface of the core is in contact with an outer circumferential surface of the overall coupling portion, and an upper end of the coupling portion is protruded upwardly, relative to an upper surface of the core. | 07-03-2014 |
20140268412 | SPINDLE MOTOR AND HARD DISK DRIVE INCLUDING THE SAME - There is provided a spindle motor, including: a rotating member including a shaft having a fixing groove disposed in a lower portion thereof, a hub base extending from an upper end of the shaft in an outer radial direction, and a magnet support part extending from an outer edge of the hub base downwardly in an axial direction; a sleeve rotatably supporting the rotating member; and a stopper including a fixed part inserted into the fixing groove and a flange part extending from an end of the fixed part in the outer radial direction, wherein the flange part includes a groove part formed by being recessed inwardly and an extension part extending from the groove part in the outer radial direction. | 09-18-2014 |
20140271287 | MOTOR - There is provided a motor including: an upper housing; a lower housing coupled to the upper housing to provide an internal space; a shaft disposed within the internal space and coupled to a hydrodynamic bearing assembly; a rotor core coupled to the shaft and rotated together with the shaft; and a balancing unit coupled to the shaft to correct a rotational imbalance at the time of rotation of the shaft and the rotor core. | 09-18-2014 |