Abstract: A fixing structure is disclosed in which a first metal board (such as a weight board) is fixed to a second metal board (such as a baseboard) without using screws. When an eccentric rotor provided to the second metal board is rotated by a screwdriver, the eccentric rotor pushes against an aperture edge provided in the first metal board, thereby sliding the first metal board in relation to the second metal board. The first metal board and the second metal board are locked by hooks provided on the second metal board, the hooks locking against additional aperture edges provided in the first metal board.

Abstract: A disk apparatus includes a head that reads information from a disk, a guiding rod that movably supports and guides the head, and a height adjustment portion that is rotatably formed on a base for adjusting the height of the guiding rod, wherein the height adjustment portion includes a height adjustment cam for sandwiching the guiding rod.

Abstract: A disc drive includes a main body, a disc tray movable with respect to the main body between a loading position for loading an optical disc and an eject position, and a chassis on which a rotational drive mechanism for rotating a loaded optical disc is provided. The chassis is pivotally provided with respect to the main body about a pivotal axis near the rear end of the chassis so that the front end thereof can be displaced between a lowered position when the disc tray is ejected and a raised position for placing the optical disc on the rotational drive mechanism when rotating the optical disc. The disc drive further includes first and second stoppers provided on the undersurface of the chassis so as to protrude therefrom.

Abstract: A guide shaft height adjustment mechanism (8) used in a disc drive includes: a chassis (43) comprised of a chassis base having a flat-plate shape and a hole; a guide shaft (77) for guiding an optical pick-up along a radial direction of an optical disc, the guide shaft having one end acting as a movable end and being mounted on the chassis base so that the movable end can be displaced in a direction perpendicular to the chassis base; an adjustment member (81) rotatably provided at the vicinity of the movable end of the guide shaft (77), the adjustment member (81) being formed by outsert molding at the position of the hole formed in the chassis base (43); and a biasing member (82) provided between the chassis base (43) and the guide shaft (77) at the vicinity of the adjustment member (81) for pushing the guide shaft (77) to a direction far away from the chassis (43).