Abstract: The invention provides increased stroke of the clamper and a reduction in thickness of the entire disk device by improving structures of a clamper for clamping the recording medium to turn freely and a clamper plate engaging with the clamper. Plural connecting sections that connect an inner torus and an outer torus, plural L-shaped hook sections at an upper end of an inner rim wall of substantially a cylindrical shape extended upward from a border of the connecting sections and the outer torus, and an outer rim wall of substantially a cylindrical shape extended upward from the outer torus are integrally formed on a clamper body. Engaging holes engaging with the L-shaped hook sections are provided in a clamper plate. A step section, an outer peripheral side of which is high, is provided in a position where an upper end of the outer rim wall collides with the clamper plate.

Abstract: To provide a disk drive having a mechanism to limit position of a tray while being transferred by a simple configuration, guiding parts each having a guide rib and a supporting portion are provided on at least one outer wall on the side facing inside the chassis, and a sliding part having a guide groove is provided on a sidewall of the tray corresponding to the guiding part. The guide rib of the guiding part is slidably fitted in the guide groove. A horizontal limiting-rib sliding face is formed on a connecting part connecting outer and inner walls of the chassis. The sliding part includes a position-limiting rib extending upward and downward from the leading edge of the tray sidewall with a guide groove formed between the position-limiting rib and the edge of the sidewall. The position-limiting rib is slidably held between the supporting portion and the limiting-rib sliding face.

Abstract: To provide a disk drive equipped with a tray that moves along a guide rail provided on a body frame in which the tray does not tilt downward under its own weight when extended, rails are provided along both sides of the tray, and a plurality of guide ribs are provided on both sidewalls of the body frame projecting inwardly therefrom for guiding the rails of the tray. A presser rib rises from the bottom of the body frame near the front of the frame and has a contacting part projecting inwardly from its end. A high horizontal rail part higher than the front-end part side is formed on top of a rear end part side of each of the rails, so that the contacting part of the presser rib contacts and presses against the high horizontal rail part.

Abstract: The invention is a pickup mounting structure capable of executing with precision, positioning and moving position control of a pickup mounted on a base plate member, even if the thickness of the base plate member is rendered smaller. With the pickup mounting structure, a substantially rectangular opening is provided in the central part of a base plate member made of metal, and a rib is formed around the entire periphery of the opening. A holder formed integrally with the rib is provided in the central part of the opening so as to bridge across the opening, and a cable fixture member made of a synthetic resin is fitted to a flat plate part of the holder, which is rectangular. The cable fixture member is provided with pawls in such a way as to be protruded therefrom, and a cable bent substantially at a right angle is fitted among the pawls.

Abstract: In order to provide an electronic instrument having a recording and reproduction device mounted on a chassis via buffer members in which number of components forming legs is reduced and the recording and reproduction is protected from shock or vibration, the buffer members are extended to a downside of the chassis. The recording and reproduction device has four legs, which each of the legs has a support shaft extended downward for screw-clamping a buffer member having a shaft hole for mounting. Through-holes for inserting the buffer members are formed in the chassis at points corresponding to the legs respectively, and size of the through-holes allows the buffer members fitting into and allows the buffer members fixing to the chassis respectively due to elastic deformation when the buffer members are screw-clamped to the support shafts.

Abstract: The invention provides increased stroke of the clamper and a reduction in thickness of the entire disk device by improving structures of a clamper for clamping the recording medium to turn freely and a clamper plate engaging with the clamper. Plural connecting sections that connect an inner torus and an outer torus, plural L-shaped hook sections at an upper end of an inner rim wall of substantially a cylindrical shape extended upward from a border of the connecting sections and the outer torus, and an outer rim wall of substantially a cylindrical shape extended upward from the outer torus are integrally formed on a clamper body. Engaging holes engaging with the L-shaped hook sections are provided in a clamper plate. A step section, an outer peripheral side of which is high, is provided in a position where an upper end of the outer rim wall collides with the clamper plate.

Abstract: To provide a guide shaft attaching structure for a disk device in which the number of components can be reduced, a guide shaft is attached easily, and only a small attaching space is required. The guide shaft attaching structure is characterized in that a fixed end 4 of a torsion spring 2 is locked to a rear side of a chassis 5, coil portion 1 is held by a spring holding section 3, a biasing end 8 of the torsion spring 2 is locked in a locking section 9, a guide shaft 6 is inserted between left and right positioning projections 7 and set to be located above the biasing end 8, and the guide shaft 6 is fastened by a screw 13. A disk of the screw 13 is not biased by the biasing end 8 at a point when screwing of the screw 13 is started.

Abstract: To provide a disk drive having a mechanism to limit position of a tray while being transferred by a simple configuration, guiding parts each having a guide rib and a supporting portion are provided on at least one outer wall on the side facing inside the chassis, and a sliding part having a guide groove is provided on a sidewall of the tray corresponding to the guiding part. The guide rib of the guiding part is slidably fitted in the guide groove. A horizontal limiting-rib sliding face is formed on a connecting part connecting outer and inner walls of the chassis. The sliding part includes a position-limiting rib extending upward and downward from the leading edge of the tray sidewall with a guide groove formed between the position-limiting rib and the edge of the sidewall. The position-limiting rib is slidably held between the supporting portion and the limiting-rib sliding face.

Abstract: The invention provides an optical disk device capable of preventing noise from being generated when removing the optical disk from a clamp portion clamping the optical disk. The optical disk 2 is fixed horizontally on a clamp portion 4 of a turntable 3 capable of being moved in an arc. A mounting surface 10A of a tray 10 on which the optical disk 2 is placed is inclined. Thereby, when the optical disk 2 is moved in an arc and pressed onto the tray 10 to be detached from the clamp portion 4, the mounting surface 10A is inclined so that the optical disk maintains contact with the mounting surface 10A of the tray when being detached from the clamp portion 4, by which the generation of noise caused by the optical disk 2 being lifted from the tray 10 and falling on the tray 10 by its own weight can be prevented.

Abstract: The invention provides a practical optical disk device having a downsized means for elevating a movable chassis including a pickup and a turntable, wherein the movable chassis is positioned stably while recording or reproducing data. A movable chassis 20 can be moved up and down via a supporting point 52 provided on a rear side 21, and has two projections 23 formed on a front wall 22 of the movable chassis 20, wherein one of the projections 23 is slidably engaged with a guidance slot 41 formed to an elevating plate 40 opposed thereto, by which the movable chassis 20 is moved up and down, and the other projection 23 is engaged with an engagement groove 47 formed separately from the slot when the first projection 23 is engaged with one end of parallel portions 44 extended from both ends of the guidance slot 41 to thereby support the movable chassis 20 in a stable manner.

Abstract: The present invention aims at providing a guide shaft holding mechanism and disk device with guide shaft holding mechanism which allow, when a guide shaft is fixed using a hook, the guide shaft to be stably guided between guide walls which regulate the movement of the guide shaft in a radial direction. A holding member 5 which holds an end of a guide shaft 4 includes a base 7, a pair of right and left guide walls 8A, 8B disposed upright on both sides of the base 7 facing each other, a stopper section 9 having flexibility disposed upright at a back end of the base 7 and a hooking section 10 provided at one end of the stopper section 9. One guide wall 8A is formed to be higher than the stopper section 9 and can push the outer surface of the guide shaft 4 against the guide wall 8A before the guide shaft 4 is engaged with the hooking section 10. This allows the guide shaft 4 to be stably guided between the guide walls 8A, 8B with the guide shaft 4 being guided along the guide wall 8A.

Abstract: To cope with accidental impact inflicted upon an optical pickup unit when the unit moves beyond a prescribed range, resin support members integrally formed with the chassis of a traverse unit and supporting the ends of main and sub guide rails at a prescribed distance are provided on the chassis, so that the impact caused by the collision against the support members for the guide rails is absorbed. Buffer members integrally formed with the support members adjacent to the center and upright perpendicularly to the chassis are provided at least between the support members for the main guide rail, so that the impact upon the optical pickup unit is absorbed.

Abstract: In order to realize reduction in thickness of a disk device including a turntable and a clamper in which a disk is mounted on the turntable and pressed and clamped by the clamper by reducing height of the clamper, the clamper is constituted with a clamper body integrally formed of synthetic resin, a magnet, and a clamper plate made of a metal magnetic substance. The clamper body has a disc-like clamp section to press the disk, a cylindrical center guide forming a housing space for the magnet in a center thereof, a cylindrical outer ring erected from the clamp section, and locking pieces extending to inward from an upper part of the outer ring so as not to project over an upper end of the outer ring and an upper end of the center guide and being arranged at equal intervals in two or more places. The clamper plate has hooks extending below to engage with the locking pieces respectively.

Abstract: A disk device equipped with a skew-adjusting mechanism for an optical pickup, including a traverse unit having a chassis, two guide rails arranged in parallel with each other on the chassis, a turntable to mount a disk thereon, and an optical pickup to be driven to move along the guide rails irradiating a recording surface of the disk with a laser beam to effect recording and reproduction.

Abstract: In order to permit a disc to be laid easily on a disc tray in a disc device movable along guide rails fitted into the disc device and having a circular recess made on its upper surface even though the tray is not fully pulled out from the cabinet, the circular recess has a disc-bearing surface on which a disc is to be laid, and the disc-bearing surface has a recess on its rear side, thereby permitting a disc to be inclined and inserted deep into the space between the front overhung of the cabinet and the unexposed area of the disc-bearing surface while holding the disc in the most stable way with the first finger inserted in the center hole and with the thumb applied to the circumference of the disc.

Abstract: The invention is intended to provide a pickup mounting structure capable of executing with precision positioning and moving position control of a pickup mounted on a base plate member even if the thickness of the base plate member is rendered smaller, and further, capable of easily forming a holder for reliably holding a wiring cable connected to the pickup. With the pickup mounting structure, an opening substantially rectangular in shape is provided in the central part of a base plate member made of metal, and a rib is formed around the entire periphery of the opening. A holder formed integrally with the rib is provided in the central part of the opening so as to bridge across the opening, and a cable fixture member made of a synthetic resin is fitted to a flat plate part of the holder, rectangular in shape. The cable fixture member is provided with pawls in such a way as to be protruded therefrom, and a cable bent substantially at a right angle is fitted among the pawls.