Abstract: A speaker includes: a diaphragm; and a damper configured to adjust vibration of the diaphragm and including a first and second metal plates having polarities that are different from each other and symmetrical with each other, wherein the damper further includes first and second deformation prevention members disposed on bottom surfaces of the first and second metal plates, respectively, and wherein first and second deformation prevention members protrude downward and extend along a major-axis direction of the diaphragm, and the first and second deformation members are configured to prevent deformation of diaphragm caused by a vertical load.

Abstract: A speaker unit includes a magnet having poles and generating magnetic flux, and a yoke part forming a path of the magnetic flux and including a first yoke extending from one of the poles, a second yoke extending from another one of the poles, and magnetic gaps disposed between the first yoke and the second yoke. The speaker unit further includes a voice coil disposed between the magnetic gaps and moving when applied with an electric current, and a diaphragm generating sound pressure while vibrating according to the movement of the voice coil. The first yoke includes magnetic plates protruding toward the second yoke, and the magnetic plates have thicknesses different from each other.

Abstract: A speaker includes: a diaphragm; and a damper configured to adjust vibration of the diaphragm and including a first and second metal plates having polarities that are different from each other and symmetrical with each other, wherein the damper further includes first and second deformation prevention members disposed on bottom surfaces of the first and second metal plates, respectively, and wherein first and second deformation prevention members protrude downward and extend along a major-axis direction of the diaphragm, and the first and second deformation members are configured to prevent deformation of diaphragm caused by a vertical load.

Abstract: A speaker unit includes a magnet having poles and generating magnetic flux, and a yoke part forming a path of the magnetic flux and including a first yoke extending from one of the poles, a second yoke extending from another one of the poles, and magnetic gaps disposed between the first yoke and the second yoke. The speaker unit further includes a voice coil disposed between the magnetic gaps and moving when applied with an electric current, and a diaphragm generating sound pressure while vibrating according to the movement of the voice coil. The first yoke includes magnetic plates protruding toward the second yoke, and the magnetic plates have thicknesses different from each other.

Abstract: A disk drive apparatus is provided. The disk drive apparatus includes: a frame which includes a slot to insert a disk therethrough; a spindle motor assembly which includes a turntable including a disk seating part and a chucking member, and a spindle motor to rotate the turntable; a traverse assembly which mounts the spindle motor thereon and is movable in a direction perpendicular to an inserting direction of the disk; a conveyance roller which is movable between a contact position and a non-contact position with the disk and conveys the disk using a friction force; and a roller driving unit which moves the conveyance roller from the non-contact position to the contact position after an unchucking operation of the disk is completed, when the disk is unloaded.

Abstract: Disclosed herein is a disc loading device applied to small-sized and slim type disc players. The disc loading device may include a first guide lever, a second guide lever, a trigger lever, a chucking unit, a slider, and a connecting unit. The connecting unit may be selectively operatively connected to the second guide lever, upon loading a first disc or a second disc, to change a timing at which a rotational force of the trigger lever may be transmitted to the slider.

Abstract: A disk drive apparatus is provided. The disk drive apparatus includes: a frame which includes a slot to insert a disk therethrough; a spindle motor assembly which includes a turntable including a disk seating part and a chucking member, and a spindle motor to rotate the turntable; a traverse assembly which mounts the spindle motor thereon and is movable in a direction perpendicular to an inserting direction of the disk; a conveyance roller which is movable between a contact position and a non-contact position with the disk and conveys the disk using a friction force; and a roller driving unit which moves the conveyance roller from the non-contact position to the contact position after an unchucking operation of the disk is completed, when the disk is unloaded.

Abstract: An optical disc reproducing apparatus includes a body installed at a wall or other mounting apparatus, and an optical disc drive protruding from the body such that an optical disc is inserted into the optical disc drive. The optical disc drive is rotatably installed to the body to protrude forward from the body, so that the optical disc reproducing apparatus is installed regardless of positions of a wall-mount television installed above the optical disc reproducing apparatus.

Abstract: Disclosed herein is a disc loading device applied to small-sized and slim type disc players. The disc loading device may include a first guide lever, a second guide lever, a trigger lever, a chucking unit, a slider, and a connecting unit. The connecting unit may be selectively operatively connected to the second guide lever, upon loading a first disc or a second disc, to change a timing at which a rotational force of the trigger lever may be transmitted to the slider.

Abstract: An optical disc reproducing apparatus includes a body installed at a wall or other mounting apparatus, and an optical disc drive protruding from the body such that an optical disc is inserted into the optical disc drive. The optical disc drive is rotatably installed to the body to protrude forward from the body, so that the optical disc reproducing apparatus is installed regardless of positions of a wall-mount television installed above the optical disc reproducing apparatus.

Abstract: An optical disk drive includes a damper interposed between a traverse deck having an optical pickup installed therein and a main frame having the traverse deck installed therein, thereby efficiently reducing vibration. The damper is installed in a coupling section between the traverse deck and the main frame to reduce a vibration and includes a through hole into which a boss formed in the main frame is inserted, and a support to protrude from inner circumference of the through hole such that the boss is fitted in the support.

Abstract: An apparatus to accommodate and load a disc cartridge in a drive includes a tray on which the disc cartridge is accommodated, a locking lever having a locking hook caught in a groove formed at a side wall of the disc cartridge when accommodated on the tray and which restricts/releases the disc cartridge using the locking hook. A sliding holder is slidably installed at the tray to prevent the disc cartridge from moving by pressing the disc cartridge restricted by the locking lever in one direction.

Abstract: A lead screw adjustment structure of a disc drive to adjust a lead screw which is rotatably installed on a pickup deck and reciprocates a pickup, which includes an incorporated elastic member installed on the pickup deck to apply an elastic force in an upward direction and an axial direction to one end portion of the lead screw, and an adjustment screw disposed above the elastic member to adjust the end portion of the lead screw up and down by being rotated.

Abstract: A disc recording/reproducing apparatus, and a method of controlling the same, the recording/reproducing apparatus including a turn table rotatably provided to a spindle motor to seat a disc; a chucking unit to fix the disc seated on the turn table; a driving unit to move the disc between a disc-chucking position and a disc-releasing position; and a controlling unit to control a driving speed of the driving unit according to a position of the disc.

Abstract: A lead screw adjustment structure of a disc drive to adjust a lead screw which is rotatably installed on a pickup deck and reciprocates a pickup, which includes an incorporated elastic member installed on the pickup deck to apply an elastic force in an upward direction and an axial direction to one end portion of the lead screw, and an adjustment screw disposed above the elastic member to adjust the end portion of the lead screw up and down by being rotated.

Abstract: An apparatus to accommodate and load a disc cartridge in a drive includes a tray on which the disc cartridge is accommodated, a locking lever having a locking hook caught in a groove formed at a side wall of the disc cartridge when accommodated on the tray and which restricts/releases the disc cartridge using the locking hook. A sliding holder is slidably installed at the tray to prevent the disc cartridge from moving by pressing the disc cartridge restricted by the locking lever in one direction.

Abstract: A magazine loading and ejecting apparatus of a disk player for loading and ejecting a magazine accommodating a plurality of disks in and out of a disk player main body, including: a stopper having a locking protrusion and being installed in the disk player main body to be capable of reciprocating perpendicular to a direction the magazine is inserted; a cam groove formed on the magazine, the cam groove having a first angled portion along which the locking protrusion slides in contact therewith when the magazine is inserted in the disk player main body and a locking groove into which the locking protrusion is inserted and locked when the magazine is completely inserted into the disk player main body; a spring which elastically biases the stopper in one direction; and an ejection unit which ejects the magazine from the disk player main body.

Abstract: A disk player includes a frame constituting a main body of the disk player, and a magazine for stacking a plurality of trays, each tray holding a disk thereon, and which can be inserted into and ejected from the frame. A chuck is mounted to the frame, for pressing the upper surface of a selected disk drawn out from the magazine. A turntable is mounted to the frame enabling up and down movement, together with the chuck for chucking the drawn-out disk when ascending. An extractor is mounted to the frame enabling forward, backward, upward and downward movement with respect to the magazine, for selectively combining with a selected tray among the plurality of trays in the magazine and drawing out the selected tray between the turntable and the chuck. An elevating mechanism is provided for elevating the extractor, and a loading motor is installed on the frame.