APPAREIL REPRODUCTEUR DE SUPPORTS D'ENREGISTREMENT ROTATIFS, COMPORTANT UN DISPOSITIF DE SERRAGE DU SUPPORT D'ENREGISTREMENT

• Main Author: TAKASHI SAITO ET TORU KISHI
• Format: Patent
• Language: French
• Published: 19.02.1982
• Subjects: INFORMATION STORAGE; INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER; PHYSICS

LE DISPOSITIF DE SERRAGE DE L'APPAREIL REPRODUCTEUR COMPREND UNE STRUCTURE DE SUPPORT 77, 90, 99, 100 TOURNANT AVEC LA PLATINE 32 ET SE DEPLACANT VERS LE HAUT ET VERS LE BAS INDEPENDAMMENT DE CELLE-CI AFIN DE PORTER UNE PARTIE PROCHE DU TROU CENTRAL 15A DU SUPPORT D'ENREGISTREMENT 15, UN MECANISME ELEVATEUR DE LA STRUCTURE DE SUPPORT, DES DOIGTS DE SERRAGE 91 POUR SERRER LE SUPPORT D'ENREGISTREMENT SUR LA PLATINE ET UN ORGANE DE RECEPTION ET D'ARRET 93 POUR FAIRE TOURNER LES DOIGTS DE SERRAGE. A rotary recording medium reproducing apparatus comprises a turntable onto which a rotary recording medium is placed, a motor for rotating the turntable, a reproducing transducer for reproducing a recorded signal from the rotary recording medium placed onto the turntable, and a clamping mechanism for clamping the rotary recording medium on the turntable. The clamping device comprises a support structure capable of unitarily rotating with the turntable and moving up and down independently with the turntable, for supporting a part in the vicinity of a center hole of the rotary recording medium when the support structure is in a raised position, an elevating mechanism for moving the support structure upwards and downwards, clamping fingers provided on the support structure for clamping the rotary recording medium on the turntable at a part in the vicinity of the center hole of the rotary recording medium when the clamping fingers are operated, where the clamping fingers are supported at positions deviated from their centers of gravity so as to rotate towards a clamping releasing direction, and a receiving and stopping member for rotating the clamping fingers towards a clamping direction opposite to the clamping releasing direction by receiving and stopping parts of the clamping fingers when the support structure is lowered. The support structure is separated from both the elevating mechanism and the receiving and stopping member when the support structure is lowered. Further, the clamping fingers are applied with a rotational force in the clamping direction due to the weight of the support structure, to press the part of the rotary recording medium in the vicinity of the center hole thereof against the turntable.