Patent application number | Description | Published |
20110083139 | Disc chucking device and motor device having the same - There is provided a disc chucking device. A disc chucking device according to an aspect of the invention may include: a chuck housing having an opening communicating with a mounting space therein; a chuck member having one end portion exposed to an outside of the opening; and a spring member mounted within the mounting space in order to exert an elastic force to the chuck member, wherein a portion of an outer circumferential surface of the chuck housing, on which the chuck member is disposed, has a smaller outer diameter than other portions thereof. | 04-07-2011 |
20110156524 | Motor device and method of manufacturing the same - There is provided a motor device. A motor device according to an aspect of the invention may include: a stator including a core having a coil wound therearound; a rotor having a magnet facing the core to thereby generate an electromagnetic force involved in interactions therebetween, the rotor rotating a shaft; a sleeve supporting the shaft; and a sleeve housing having a mounting surface to support the core and a protrusion protruding from the mounting surface to prevent a rotation of the core. | 06-30-2011 |
20110258652 | Motor device - A motor device includes: a rotor case rotated along with a shaft; a chuck housing mounted on a hub of the rotor case; a chuck member mounted on the chuck housing such that the chuck member is protruded from the interior to an outer side, to fix a disc; and a concave portion formed as a recess on the rotor case to form a gap with the chuck support in contact with the chuck member to thereby prevent a frictional contact between the rotor case and the chuck member. | 10-20-2011 |
20110309710 | Core and motor having the same - Disclosed is a core including a plurality of core layers in a laminated structure formed through one-directional press shearing and having an insulating layer formed on the surface thereof prevented from being damaged by burrs formed through the press shearing when a winding coil is wound on and around the core, and a motor having the core. The core for a motor includes: a plurality of core plates having a laminated structure formed through one-directional press shearing; and a chamfered portion formed on at least some of the corners of a face opposed to one face of the core plate to which force is applied by the press shearing. | 12-22-2011 |
20110321068 | Disk chucking device and motor apparatus using the same - There is provided a disk chucking device including a disk chucking device including a centering case to which an inner circumferential surface of a disk is fixed, chucking members received in insertion holes formed in the centering case, and an elastic member connecting the centering case and the chucking members to each other in such a manner as to elastically support the inner circumferential surface of the disk, when the disk is mounted on the centering case, the elastic member having at least two bent portions by which displacements and restoring forces have a quadratic function relationship. | 12-29-2011 |
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 |
20120017227 | Motor and optical disc drive using the same - There is provided a motor formed to have a simple coupling structure between a base plate and a sleeve holder, thereby implementing a simple structure and reducing costs and processes taken for manufacturing the motor, and an optical disc drive using the same. To this end, the motor includes a base plate having at least one protrusion formed therein, and a sleeve holder having a body part, of which the shape is cylindrical and in which a sleeve is fitted, and a flange protrudingly formed from a lower end of the body part in such a manner as to make surface-to-surface contact with an upper surface of the base plate, wherein the flange is formed to have at least one insertion hole, through which the protrusion is inserted so that the sleeve holder is coupled to the base plate. | 01-19-2012 |
20120153781 | MOTOR - 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. | 06-21-2012 |
20120174140 | DISK CHUCKING DEVICE - There is provided a disk chucking device including: a chucking mechanism body installed on a rotor case; a chuck chip movably installed on the chucking mechanism body and fixing a disk thereto; and a spring member installed such that both ends thereof are supported by the chucking mechanism body and the chuck chip, and including a permanent deformation suppressing part provided in a bent portion thereof in order to prevent permanent deformation of the bent portion when the disk is loaded and unloaded and having a smaller pitch than that of other portions. | 07-05-2012 |