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热词
    • 2. 发明授权
    • Phonograph for a record disk having a plurality of sound grooves
    • 具有多个音槽的记录盘的留声机
    • US4811322A
    • 1989-03-07
    • US216667
    • 1988-07-08
    • Eishi KoikeKazumi Nozawa
    • Eishi KoikeKazumi Nozawa
    • G11B3/095G11B25/04A63H3/33G11B3/00G11B19/20
    • G11B3/095
    • An index portion of a record disk unit is formed by cutting out a portion of a flange which is formed continuously along a peripheral edge of the record disk unit. When one of selection rods is pushed against a spring which urges the selection rod in a retreating direction, to rotate a stylus presssure release actuating wheel, an engaging member, formed on the selection rod, is elastically deformed by the edge of the flange and rides over the flange into engagement therewith. When the index portion of the record disk unit comes around to a position coincident with the engaging member, the engaging member is allowed to pass through the cut-out portion of the index portion, to thereby return the selection member to its original position by a spring force to be applied a stylus pressure on a pickup.
    • 通过切割沿着记录盘单元的周缘连续形成的凸缘的一部分来形成记录盘单元的索引部分。 当选择杆中的一个被推压到沿退回方向推动选择杆的弹簧时,旋转触针压力释放致动轮,形成在选择杆上的接合构件由凸缘的边缘弹性变形,并且骑乘 在凸缘上方与其接合。 当记录盘单元的索引部分到达与接合构件重合的位置时,允许接合构件通过折痕部分的切口部分,从而将选择构件返回到其初始位置 弹簧力在皮卡上施加触针压力。