Device for recording or reproducing signal on or from disk with a releasing mechanism

A signal recording or reproduction device for disks which comprise a holder pivoted at a base end thereof to a chassis and pivotally movable for accommodating therein a cartridge enclosing a disk therein, a lock slide mounted on the holder and movable in cartridge inserting and unloading directions, the lock slide being movable with the insertion of the cartridge to engage with the holder, and release means for disengaging the lock slide from the holder when the holder is pivotally moved upward from a lowered position, the signal recording or reproducing device being characterized in:

• that:
• the release means has a release piece slanting with respect to the plane of pivotal movement of the holder and attached at a base end thereof to the chassis, the release piece being elastically deformable outward and extending from the base end approximately in parallel to the cartridge inserting-unloading directions,
• the release piece being movable between a deflected position to which the release piece is elastically deformed outward by being pushed by the lock slide when the holder is lowered to permit passage of the lock slide and a standby position in which the release piece restores itself elastically and disengages the lock slide from the holder by coming into contact with the lock slide when the holder is pivotally moved upward from the lowered position, wherein
• the portion of the release piece to be brought into contact with the lock slide is a slanting edge so inclined that the release piece has a width decreasing toward the cartridge unloading direction.