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: A switch (50) is adapted to be On when a contact point (52) is at a position to be in contact with a cam surface (47) and Off when the contact point (52) is at a position corresponding to a non-cam surface (48). In the vicinity of the non-cam surface (48) of the cam surface (47), a rib (49) is provided which changes a direction of the contact point (52) when reciprocation of the cam member (43) is changed. Accordingly, even when the switch (50) comes into contact with the cam member (43) moving in a different direction, the direction of the contact point (52) is changed so as to be the same. Hence, the switch (50) is prevented from being affected by a hysteresis caused by difference in directions of the contact point (52).

Abstract: A disc device includes. a case having an opening; and a tray that is movable to and retractable from the case and is provided on one surface thereof with an arc recess capable of holding an optical disc. The tray includes a cutout portion that is provided near a rear face of the arc recess and guides an inserted distal end of the optical disc toward a bottom side of the tray lower than an upper face of the arc recess.

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 unit includes a push arm for providing a predetermined clearance between a periphery of a large-diameter disc and a guide lever used for guiding insertion and ejection of the large-diameter disc. The clearance is formed by moving the guide lever toward a left wall when the large-diameter disc is clamped on a turntable. With this arrangement, when the large-diameter disc is mounted on the turntable, the rotation of the large-diameter disc is not hindered.

Abstract: A disc unit includes: a slide stopper adapted to switch a state of the unit between an initial state, a guide-restricted state and a movement-unrestricted state by sliding in right or left direction; and a first plate spring and a second plate spring for biasing the slide stopper in the guide-restricted state or the movement-unrestricted state in a direction to return to an initial position. With this arrangement, the slide stopper can be constantly returned to the initial position unless in the guide-restricted state and the movement-restricted state. Thus, with a simplified arrangement, the disc unit can be switched between the initial state, the guide-restricted state and the movement-unrestricted state.

Abstract: A switch (50) is adapted to be On when a contact point (52) is at a position to be in contact with a cam surface (47) and Off when the contact point (52) is at a position corresponding to a non-cam surface (48). In the vicinity of the non-cam surface (48) of the cam surface (47), a rib (49) is provided which changes a direction of the contact point (52) when reciprocation of the cam member (43) is changed. Accordingly, even when the switch (50) comes into contact with the cam member (43) moving in a different direction, the direction of the contact point (52) is changed so as to be the same. Hence, the switch (50) is prevented from being affected by a hysteresis caused by difference in directions of the contact point (52).

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: Disclosed herein is a pickup feed mechanism in which the joint and the feed screw can engage with each other in a desirable manner. The joint (23) is fastened at one end to a slide member (21) that holds a pickup. The joint (23) has, at the other end, an engagement part (231) that is shaped like a projection. The engagement part (231) is located between a top cover (32) and the feed screw (24) and engaged with the screw portion (241) of the feed screw (24). The joint (23) also has, as the other end, a projection (232) that protrude away from the engagement part (231). The projection (232) abuts on the top cover (32) before the engagement part (231) disengages from the screw portion (241), when the joint (23) moves away from the screw portion (241) as it receive vibration or an impact. Thus, the engagement part (231) is prevented from coming out of the screw portion (241).

Abstract: A main frame is supported in a box, by first elastic members. An optical disc driving device is mounted on the main frame. A sub-frame is supported on the main frame by second elastic members.

Abstract: A main frame is supported in a box, by first elastic members. An optical disc driving device is mounted on the main frame. A sub-frame is supported on the main frame by second elastic members.

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.