Abstract: A disc drive includes a main body having a roughly box-shaped casing and a top plate which covers the upper side of the casing, a disc tray having a disc holding portion in which an optical disc is to be placed and being movable with respect to the main body through an opening formed on the front side of the main body, and a convex portion provided on the top plate so as to protrude inside the main body and having a shape that its horizontal cross-sectional area decreases gradually toward a tip thereof. The convex portion being positioned in a region of the top plate corresponding to the disc holding portion of the disc tray in a state that the disc tray is fully inserted into the main body. The disc drive may further includes a roughly arc-shaped ridge portion formed in the region of the top plate so as to protrude inside the main body. The ridge portion also has a shape that its horizontal cross-sectional area decreases gradually toward a tip thereof.

Abstract: A case of a disk device includes a case body, having a bottom plate and a pair of side plates extending upright respectively from opposite side edges of the bottom plate, a lid member, provided substantially parallel to the bottom plate, and is connected to the two side plates, a box member, contained in the case body and the lid member assembled each other, and a positioning member, positioning the box member relative to the case body and the lid member.

Abstract: A disk device for playing back information recorded on an optical disk, includes a device body; a disk tray, moving in the device body between a charging position, into which the optical disk is charged, and a discharging position from which the optical disk is discharged; a chassis, provided in the device body; a turntable, moving between an ascending position and a descending position when the chassis is displaced, and the turntable on which the optical disk is set; and a disk clamper, pivotally arranged on an upper plate of the device body, and clamping the optical disk against the turntable when the turntable is moved to the ascending position. The disk clamper is arranged on the upper plate with a clearance therebetween so that the disk clamper is moved in all radial directions, and an amount of the clearance in a first direction, in which the disk tray moves from the discharging position to the charging position, is smaller than amounts of the clearance in the other directions.

Abstract: It is an object to provide a drive gear capable of mating with a mating gear smoothly and a disc drive equipped with the drive gear. A pinion gear 610 is a drive gear to be arranged on an axis for transmitting rotational force to a large gear 631 of a first gear 630 as the mating gear arranged on another axis, the pinion gear 610 being adapted to be mated with the large gear 631 by moving the large gear 631 as one of these gears in a state where the pinion gear 610 as the other gear of these gears is being fixed on the axis thereof.

Abstract: It is an object to provide a disc tray and a disc drive equipped with the disc tray, in which a disc is not disengaged or comes away from a disc holding portion when the disc tray is being moved. The disc tray 51 is equipped with the disc tray 51 for conveying a disc 10 between a disc loading position inside the disc drive and a disc ejection position outside the disc drive. The disc tray 51 includes a disc holding portion 511 in which there are provided a guiding slant surface 512 for guiding an outer periphery 103 of the disc 10, and an inner wall portion 513 which is formed continuously to an inner edge of the guiding slant surface 512 so as to oppose to the outer peripheral surface 103 of the disc 10 placed on the disc tray 51 and arranged in parallel to the thickness direction of the outer peripheral surface 103 of the disc 10.

Abstract: It is an object to provide a loading drive mechanism by which it is possible to manually move a disc tray smoothly, and by which the number of parts can be made relatively small and assembling operation can be carried out easily, and a disc drive provided with the loading drive mechanism.

Abstract: A case of a disk device includes a case body, having a bottom plate and a pair of side plates extending upright respectively from opposite side edges of the bottom plate, a lid member, provided substantially parallel to the bottom plate, and is connected to the two side plates, a box member, contained in the case body and the lid member assembled each other, and a positioning member, positioning the box member relative to the case body and the lid member.

Abstract: A disk device for playing back information recorded on an optical disk, includes a device body; a disk tray, moving in the device body between a charging position, into which the optical disk is charged, and a discharging position from which the optical disk is discharged; a chassis, provided in the device body; a turntable, moving between an ascending position and a descending position when the chassis is displaced, and the turntable on which the optical disk is set; and a disk clamper, pivotally arranged on an upper plate of the device body, and clamping the optical disk against the turntable when the turntable is moved to the ascending position. The disk clamper is arranged on the upper plate with a clearance therebetween so that the disk clamper is moved in all radial directions, and an amount of the clearance in a first direction, in which the disk tray moves from the discharging position to the charging position, is smaller than amounts of the clearance in the other directions.

Abstract: A lead wiring structure, includes a wall portion, having a first face and a second face, and having a first penetrating portion which penetrate from the first face to the second face and through which a lead is passed. The first penetrating portion has a third face and a fourth face which are opposite to each other via a pass of the lead. The first face forms an acute angle with the third face, and the second face forms an acute angle with the fourth face.

Abstract: A disc drive includes a main body having a roughly box-shaped casing and a top plate which covers the upper side of the casing, a disc tray having a disc holding portion in which an optical disc is to be placed and being movable with respect to the main body through an opening formed on the front side of the main body, and a convex portion provided on the top plate so as to protrude inside the main body and having a shape that its horizontal cross-sectional area decreases gradually toward a tip thereof. The convex portion being positioned in a region of the top plate corresponding to the disc holding portion of the disc tray in a state that the disc tray is fully inserted into the main body. The disc drive may further includes a roughly arc-shaped ridge portion formed in the region of the top plate so as to protrude inside the main body. The ridge portion also has a shape that its horizontal cross-sectional area decreases gradually toward a tip thereof.

Abstract: A structure of mounting a flexible wiring board, includes a strap-like flexible wiring board, a base member, a moving member and a shape-restricting member. The strap-like flexible wiring board has a first curvature portion curved in a substantially inverted manner with its front and rear sides reversed, a second curvature portion curved in a direction opposite to a direction of curvature of the first curvature portion and an intermediate portion disposed between the first and second curvature portions. The base member has a first fixing portion which fixes a first end portion of the flexible wiring board. The moving member is mounted for movement relative to the base member. The moving member has a second fixing portion which fixes the second end portion of the flexible wiring board. The shape-restricting member restricts a shape of the intermediate portion so that a part of the intermediate portion is deformed to project into a convex shape when viewed from a side thereof.

Abstract: A skew adjustment mechanism for an optical pick-up used in an optical disc drive is disclosed, in which the optical pick-up is freely movable in a radial direction of an optical disc along a guide rod for playing back or recording and playing back information recorded on the optical disc. The optical pick-up includes a pick-up base having a first end and a second end opposite to the first end, the first end being slidably connected to the guide rod. The tangential skew adjustment mechanism includes a pick-up base displacement mechanism provided on the second end of the pick-up base for rotationally displacing the pick-up base about an axis of the guide rod.

Abstract: A positioning structure of a flexible printed circuit for a pick-up used in a disc drive is disclosed. The structure comprises a turntable driven by a motor for supporting a disc thereon, a pick-up movable in a radial direction of the disc for reproducing information recorded on the disc to be supported on the turntable, a chassis provided with the turntable and the pick-up and having an opening and positioning members provided at or near the opening, a printed circuit board arranged below the chassis and provided with electrical circuits for inputting and outputting electrical signals to and from the pick-up, and a flexing printed circuit for connecting the pick-up to the printed circuit board through the opening of the chassis, wherein the flexible printed circuit is formed with engaging members to be engaged with the positioning members, respectively. This structure is capable of positioning the flexible printed circuit with respect to the chassis easily and reliably.

Abstract: A skew adjustment mechanism for an optical pick-up used in an optical disc drive is disclosed, in which the optical pick-up is freely movable in a radial direction of an optical disc along a guide rod for playing back or recording and playing back information recorded on the optical disc. The optical pick-up includes a pick-up base having a first end and a second end opposite to the first end, the first end being slidably connected to the guide rod. The tangential skew adjustment mechanism includes a pick-up base displacement mechanism provided on the second end of the pick-up base for rotationally displacing the pick-up base about an axis of the guide rod.

Abstract: A disk device for reproducing information and/or for recording information having a casing in which all parts of the disk device are included. The casing includes a number of first bosses and a recording/reproducing unit. The recording/reproducing unit includes at least a disk motor and an optical head. The optical head accesses the disk to reproduce information from the disk and/or record information in the disk. The recording/reproducing unit is arranged to have corners at positions corresponding to the first bosses of the casing. A plurality of vibration absorbing parts are provided and arranged at corners of the recording/reproducing unit. The vibration absorbing parts are also fixed to the first bosses to absorb vibrations of the recording/reproducing unit. The recording/reproducing unit further includes a chassis having mounting holes at the corners thereof. Each vibration absorbing part is respectively fitted to a periphery of one of such mounting holes.

Abstract: A disk device includes a drive mechanism having at least a disk motor and an optical head, the disk motor rotating a recording disk, and the optical head accessing the disk to reproduce information from the disk and/or record information in the disk. A first printed circuit board controls the disk motor and the optical head of the drive mechanism, the first printed circuit board receiving signals from the optical head and/or sending signals to the optical head to perform the reproducing of information and/or the recording of information. The disk device further comprises a second printed circuit board electrically coupling the drive mechanism to the first printed circuit board, the second printed circuit board including a connector coupled to wire patterns of the signals received and/or sent by the first printed circuit board, and the connector being coupled to the first printed circuit board.

Abstract: A disc drive comprises a main body equipped with a turntable for rotating a disc, a disc tray movable with respect to the main body between a disc loaded position and a disc eject position to transport the disc to the disc loaded position, and a disc clamper for holding the disc transported by the disc tray between the turntable and the disc clamper. The disc drive further includes a disc clamper displacement mechanism provided on the disc tray to make contact with the disc clamper to displace the disc clamper upward when the disc tray is moved from the disc loaded position to the disc eject position so as to prevent obstruction of the movement of the disc tray. This mechanism includes an inclined surface formed on at least a portion of the disc tray to the rear of a disc supporting portion and a reinforcing portion connected to the rear of the inclined surface.

Abstract: A disk device includes a drive mechanism having at least a disk motor and an optical head, the disk motor rotating a recording disk, and the optical head accessing the disk to reproduce information from the disk and/or record information in the disk. A first printed circuit board controls the disk motor and the optical head of the drive mechanism, the first printed circuit board receiving signals from the optical head and/or sending signals to the optical head to perform the reproducing of information and/or the recording of information. The disk device further comprises a second printed circuit board electrically coupling the drive mechanism to the first printed circuit board, the second printed circuit board including a connector coupled to wire patterns of the signals received and/or sent by the first printed circuit board, and the connector being coupled to the first printed circuit board.

Abstract: A sled motor mounting structure is provided with a sled motor which having a rotation shaft and a lead screw which is mounted on the rotation shaft and is in mesh with a mated gear, the rotation shaft being constructed so as to have a play in its axial direction for enabling a smooth rotation; and a stopper provided in front of the tip of the rotation shaft of the sled motor such that the tip of the rotation shaft comes to abutment thereto when the rotation shaft is displaced toward the tip direction thereof within the play due to the rotation of the lead screw which is in mesh with the mated gear, thereby restricting the tip of the rotation shaft from further movement in the axial direction thereof. The stopper is arranged at a prescribed distance from the tip of the rotation shaft when the rotation shaft is moved to the base end within the play. The prescribed distance is set to be less than the play in the axial direction, for example it lies within the range of 0.02 mm-0.05 mm.

Abstract: An improved disc clamper and a disc drive equipped with the disc clamper is disclosed. The disc clamper is used in a disc drive for carrying out playing back or playing back and recording of a disc which is rotated by means of a turntable movable between a raised position and a lowered position. The disc clamper is supported rotatably and movably in up and down direction by a support member with an opening provided above the turntable so as to hold the disc between the clamper and the turntable moved to the raised position.