EP0644539A2 Expired / Lapsed EP ⏱️ 0.0 years remaining

Disc apparatus

Assignee: Panasonic Holdings Corp

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Filing: 1994-09-13

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Granted: —

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Expires: 2014-09-13

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Abstract

Abstract An engaging part provided on a loader which has shifted a holder carrying thereon a disc cartridge to a reproducing/recording position, engages with a mechanical lock mechanism so as to release a holder pin in said mechanical lock mechanism from its locked condition in order to hold a movable chassis in a floating condition with respect to a stationary chassis. On the contrary, the engaging part on the loader locks the holding pin in the mechanical lock mechanism so as to fix movable chassis to the stationary chassis when the holder has been shifted to the cartridge ejecting side. When the holder is moved to the reproducing/recording position, the holding pin provided on the holder engages with a shutter closing spring so as to retract an engaging part at the front end of the shutter closing spring through an opening in the holder in order to prevent the disc cartridge from making contact with the shutter closing spring, thereby it is possible to make the feeling of insertion of the disc cartridge satisfactory, and to avoid damaging the disc cartridge. Further, a rack in a loader feed mechanism is composed of two rack members which are linked together so as to decrease the operating length for moving the loader is reduced.

Inventors

👤 Eiichi Ookawa
👤 Hiroto Nishida
👤 Takashi Suzuki
👤 Hitoshi Watanabe
👤 Toshiaki Sasaki

Bibliographic Details

Application Number —

Jurisdiction EP

Data Source google_patents

Last Synchronized 2026-10-23 20:20

CPC Classifications

G; G11; G11B; G11B17/00; G11B17/02; G11B17/04; G11B17/041; G11B17/043; G11B17/0438; G11B17/0436

Claims Analysis

Total Claims: 4

Claim 1

Independent Claim 171 words

A disc apparatus comprising a stationary chassis; a movable chassis supported to said stationary chassis by means of resilient means and carrying thereon a turntable and a pick up; a holder pin provided on said movable chassis; a mechanical lock mechanism provided on said stationary chassis, for releasably gripping said holder pin so as to fix said movable chassis to said stationary chassis; a holder provided movably on said movable chassis, for holding a disc cartridge thereon and for loading and ejecting said disc cartridge; a loader provided on the stationary chassis, for conveying said holder in a predetermined conveying direction; a pin actuating means provided on said loader, adapted to interfere with said mechanical lock mechanism at an end of loading operation of said disc cartridge, for causing said mechanical lock mechanism to release said holder pin from its locked condition, and adapted to interfere with said mechanical lock mechanism at a start of ejecting operation of said cartridge, for casing said mechanical lock mechanism to lock said holder pin.

Claim 2

Dependent Claim 144 words

A disc apparatus comprising a holder for conveying a disc cartridge incorporating a data recording disc and a slide shutter, in a predetermined conveying direction; a shutter opener provided at one side of said holder so as to be reciprocatable in the conveying direction, relative to said holder, said holder and said shutter opener defining a cartridge insertion part, a shutter closing spring having at its one end an engaging part and fixed to said shutter opener, an opening formed in a cartridge insertion part side surface of said shutter opener, for allowing said engaging part of said shutter closing spring to project into said cartridge insertion part, and an escape mechanism provided on said holder, for retracting said engaging part of said shutter closing spring from said cartridge insertion part through said opening when said holder is positioned on a cartridge introducing side.

Claim 3

Dependent Claim 60 words

A disc apparatus as set forth in claim 1, wherein said escape mechanism comprises a holding pin holding said shutter opener, and adapted to interfere with said shutter closing spring so as to retract said engaging part of said shutter closing spring from said cartridge insertion part through said opening when said holder is positioned on the cartridge introducing side.

Claim 4

Dependent Claim 109 words

A disc apparatus comprises a stationary chassis; first and second rack members each having a tooth part and provided on said stationary chassis so as to be movable in a direction of movement of a loader; a guide pin provided on said first rack member, a guide hole formed in said second rack member, said guide pin piercing through said guide hole and being coupled at one end to said loader; spring retainers provided respectively on said first and second rack members, a spring bridging between said spring retainers; and a gear meshed with the tooth part of said second rack member, and coupled to a drive gear train.

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