Abstract: A recording medium drive includes a disc ejecting mechanism that ejects an optical disc disposed on a turntable to a slot. The disc ejecting mechanism is provided with a first disc feeding mechanism disposed on a rear side in a drive unit body and a second disc feeding mechanism (a disc guide mechanism) that is disposed on a slot side relative to the first disc feeding mechanism and continuously feeding the optical disc fed by the first disc feeding mechanism in a direction toward the slot. The optical disc having a small diameter can be transferred from the turntable to the slot by the first disc feeding mechanism and the second disc feeding mechanism which are respectively disposed on the rear side and a front side of the slot, thereby ejecting the optical disc to the outside.

Abstract: Provided are a disc guide mechanism 41 that is disposed on one end side of a slot 10A in a drive unit body 10 and guides an optical disc 1; and a disc diameter detecting mechanism 42 that is disposed on the other side of the slot 10A in the drive unit body 10 and retracts the disc guide mechanism 41 when the optical disc 1 inserted in the slot 10A is large and advances the optical disc 1 when the optical disc 1 is small. The disc guide mechanism 41 and the disc diameter detecting mechanism 42 which are respectively disposed on sides of the slot 10A can center the optical disc 1 in accordance with a diameter of the optical disc 1.

Abstract: A disc ejecting mechanism 43 that ejects an optical disc 1 disposed on a turntable 23 to a slot 10A is provided with a first disc feeding mechanism 61 disposed on a rear side in a drive unit body 10 and a second disc feeding mechanism (a disc guide mechanism 41) that is disposed on a slot 10A side relative to the first disc feeding mechanism 61 and continuously feeding the optical disc 1 fed by the first disc feeding mechanism 61 in a direction toward the slot 10A. The optical disc 1 having a small diameter can be transferred from the turntable 23 to the slot 10A by the first disc feeding mechanism 61 and the second disc feeding mechanism which are respectively disposed on the rear side and a front side of the slot 10A, thereby ejecting the optical disc 1 to the outside.

Abstract: Provided are a disc guide mechanism 41 that is disposed on one end side of a slot 10A in a drive unit body 10 and guides an optical disc 1; and a disc diameter detecting mechanism 42 that is disposed on the other side of the slot 10A in the drive unit body 10 and retracts the disc guide mechanism 41 when the optical disc 1 inserted in the slot 10A is large and advances the optical disc 1 when the optical disc 1 is small. The disc guide mechanism 41 and the disc diameter detecting mechanism 42 which are respectively disposed on sides of the slot 10A can center the optical disc 1 in accordance with a diameter of the optical disc 1.

Abstract: A recess (16a3) is provided to be continuous with the circumferential edge of a tray recess (16a2) of a disk tray (16) housing an optical disc (28) to allow a pickup (45) to move without contacting anything. A cover section (17c) having a substantially tongue-like shape adapted to the recess (16a3) is projected integrally from a rotor support member (17) covering the tray recess (16a2) from above and defining a substantially cylindrical housing space (18) for coaxially housing the optical disc (28), the cover section continuously covering the recess (16a3) of the disk tray (16) and the housing space (18). Even when the optical disc (28) is rotated at a high speed, flutter attributable to airflow or a difference between pressures on both sides of the optical disc (28) can be reduced to allow the optical disc (28) to rotate with stability.

Abstract: There is provided a slot-in type reproducing/recording apparatus in which a disk ,when ejected, stops at a predetermined position in front of the apparatus to be easily handled. A stop mechanism (59) includes an engagement pin (55) formed on an eject arm (52) and biased toward a selector plate (51) and the engagement recesses (51E, 51F) formed on the selector plate (51) and hold the engagement pin (55) in a manner that the disk is held by main arms and the eject arm (52). The selector plate (51) can move in a direction orthogonal to a disk-eject direction as the main arms open or close. Upon the ejection of the disk, the stop mechanism (59) stops the disk at a predetermined position in front of the apparatus so as to prevent the disk from jumping out from a slot (1A).

Abstract: There is provided a reproducing/recording apparatus that can reduce a load required for pushing in a case to activate a motor of a loading mechanism. The recording/reproducing apparatus includes a gear mechanism coupled with the motor, and a rack (43) coupled with the gear mechanism and provided along an advancement and retraction direction of a base plate (3), i.e., the case. Between the rack (43) and the base plate (3), grooves (32A) are formed for allowing a relative movement of the rack (43) and the base plate (3) along the advancement and retraction direction. Between the base plate (3) and the gear mechanism, a start cam mechanism is formed for starting rotation of the motor when the base plate (3) advances to a predetermined position. With such configuration, the base plate (3) can advance within the length of the grooves (32A) without much load when a user pushes in the base plate (3), therefore the disk D can be easily loaded.

Abstract: A loading apparatus is provided with: a roller device capable of abutting on a recording medium from the side of one surface of the recording medium, which is inserted through an insertion slot, and rotating to carry the recording medium in a carrying direction; and at least one arm device which is constructed such that the end portion thereof abuts on one portion of a peripheral portion of the recording medium on the other surface, to press the recording medium onto said roller device from the other surface side, and that a portion including the end portion evacuates from a space to which the recording medium will be carried, by the end portion being moved along the peripheral portion as the recording medium is carried in the carrying direction.

Abstract: A recess (16a3) is provided to be continuous with the circumferential edge of a tray recess (16a2) of a disk tray (16) housing an optical disc (28) to allow a pickup (45) to move without contacting anything. A cover section (17c) having a substantially tongue-like shape adapted to the recess (16a3) is projected integrally from a rotor support member (17) covering the tray recess (16a2) from above and defining a substantially cylindrical housing space (18) for coaxially housing the optical disc (28), the cover section continuously covering the recess (16a3) of the disk tray (16) and the housing space (18). Even when the optical disc (28) is rotated at a high speed, flutters attributable to airflow or a difference between pressures on both sides of the optical disc (28) can be reduced to allow the optical disc (28) to rotate with stability.

Abstract: A disc driving apparatus comprises a turntable, a clamping member and a cam mechanism. A disc is to be placed on the turntable. The clamping member holds the disc between the turntable and the clamping member with a magnetic attracting force. The cam mechanism causes a relative movement between the turntable and the clamping member to move any one of them away from another thereof or move them closer to each other. The cam mechanism has a cam and a cam follower. The cam has a contour by which a variation rate of displacement of the cam follower relative to a moving amount of the cam when the turntable and the clamping member move away form each other becomes smaller than a variation rate thereof when the turntable and the clamping member move close to each other.

Abstract: There is provided a slot-in type reproducing/recording apparatus in which a plurality of different sized disks are applicable and a disk surface is protected from dust and dirt caused by disk insertion and ejection. The slot-in type reproducing/recording apparatus includes an apparatus body (1) having a slot (1A) for inserting and ejecting a disk (D) and a hold assembly (5) provided inside the apparatus body (1) for accommodating the disk (D). Since the hold assembly (5) has three arms (52 to 54) that respectively press an outer circumferential edge of the disk (D) at different points with the predetermined biasing force, two types, i.e., a small type and a large type, of disk (D) can be held with the biasing force without the arms (52 to 54) touching the surface of the disk (D).

Abstract: There is provided a reproducing/recording apparatus that can reduce a load required for pushing in a case to activate a motor of a loading mechanism. The recording/reproducing apparatus includes a gear mechanism coupled with the motor, and a rack (43) coupled with the gear mechanism and provided along an advancement and retraction direction of a base plate (3), i.e., the case. Between the rack (43) and the base plate (3), grooves (32A) are formed for allowing a relative movement of the rack (43) and the base plate (3) along the advancement and retraction direction. Between the base plate (3) and the gear mechanism, a start cam mechanism is formed for starting rotation of the motor when the base plate (3) advances to a predetermined position. With such configuration, the base plate (3) can advance within the length of the grooves (32A) without much load when a user pushes in the base plate (3), therefore the disk D can be easily loaded.

Abstract: There is provided a slot-in type reproducing/recording apparatus in which a disk ,when ejected, stops at a predetermined position in front of the apparatus to be easily handled. A stop mechanism (59) includes an engagement pin (55) formed on an eject arm (52) and biased toward a selector plate (51) and the engagement recesses (51E, 51F) formed on the selector plate (51) and hold the engagement pin (55) in a manner that the disk is held by main arms and the eject arm (52). The selector plate (51) can move in a direction orthogonal to a disk-eject direction as the main arms open or close. Upon the ejection of the disk, the stop mechanism (59) stops the disk at a predetermined position in front of the apparatus so as to prevent the disk from jumping out from a slot (1A).

Abstract: A disk drive includes a main unit and an outer case (2). The main unit includes a disk-driving unit for rotating a disk, a data-reproducing unit for reproducing data from the disk, and a drive unit for moving the data-reproducing unit relative to the disk. The outer case (2) has a top wall (3a) and a rear wall (3c). The top wall (3a) opposes the main unit. The rear wall (3c) extends from the rear edge of the top wall (3a), is gently inclined and covers the rear part of the main unit. The rear wall (3c) serves as a guide when the disk drive is inserted into a slot of an apparatus. In addition, the metal plate used to form the outer case (2) can be smaller than otherwise.

Abstract: A disc driving apparatus comprises a turntable, a clamping member and a cam mechanism. A disc is to be placed on the turntable. The clamping member holds the disc between the turntable and the clamping member with a magnetic attracting force. The cam mechanism causes a relative movement between the turntable and the clamping member to move any one of them away from another thereof or move them closer to each other. The cam mechanism has a cam and a cam follower. The cam has a contour by which a variation rate of displacement of the cam follower relative to a moving amount of the cam when the turntable and the clamping member move away form each other becomes smaller than a variation rate thereof when the turntable and the clamping member move close to each other.

Abstract: A vibration absorbing mechanism comprises mount member 4 for mounting drive member for driving the rotation of an information recording medium and information reading member 5 for reading the information of the information recording medium, and dynamic vibration absorbing member 14, connected via the mount member 4 and an elastic member 21, for attenuating the vibration of the mount member 4. The dynamic vibration absorbing member 14 is connected with the elastic member 21 via a wall face constraining an outer circumferential face of the elastic member 21, and restraint changing member 25 for changing a restraint of the wall face on the elastic member 21 in a specific direction is provided between the elastic member 21 and the dynamic vibration absorbing member 14.

Abstract: An apparatus for driving a movable body, comprises a driving power source having an output shaft; and a driving gear provided on the output shaft to drive the movable body. The driving gear is capable of slipping relative to the output shaft of the driving power source. The output shaft of the driving power source may be connected to the movable body through a gear train for transmitting driving power from the driving power source to the movable body. In this case, the gear train includes the driving gear and the driving gear slips when a prescribed load is applied to the gear train.

Abstract: A radio control device is provided that has the D/R function wherein the rate can be switched by a simple operation without impairing the operability of a stick. The adjustment value (rate) determining a relationship between stick operation amount and servo motor operation amount is switched at the changeover point arbitrarily set within a range of stick operation amounts. The rate 1 is 100% while the rate 2 is 60%. The point 1 is set to the position corresponding to about 65% of the maximum value of the stick operation amount in the right direction (or down direction). The point 2 is set to the position corresponding to about 85% of the maximum value of the stick operation amount in the left direction (or up direction). In the rate 2, the rudder does not effectively work over the range where the operation amount of the stick is relatively small. When the adjustment value exceeds the point, the mode enters the rate 1, so that the rudder works effectively.

Abstract: A driving apparatus comprises a rotation member, a shaft and a restriction member. The rotation member has a shaft-receiving portion. The shaft is fitted into the shaft-receiving portion so as to permit rotation of the rotation member relative to the shaft. The shaft has a protrusion projecting in a direction substantially perpendicular to an axial direction of the shaft. The restriction member prevents the rotation member from deviating in a projecting direction of the protrusion.

Abstract: An adhered double-sided optical disc is formed by adhering a first disc and a second disc with each other at both sides. The device has a turntable secured to a rotating shaft, a clamper for clamping the double-sided optical disc together with the turntable, and a centering hub mounted on the rotating shaft. The centering hub has a first engaging cylindrical portion and a second engaging cylindrical portion surface of which is located axially inside the first engaging cylindrical portion. Each of both of the engaging cylindrical portions has a diameter so as to be engaged with an inside wall of a center hole of each of the first and second discs. An inclining angle (.alpha.) of the first engaging cylindrical portion with respect to a vertical plane to an axis of the centering hub is larger than an inclining angle (.beta.) of the second engaging cylindrical portion with respect to the vertical plane to the axis.