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    • 1. 发明授权
    • Magnetic tape cassette with door opening mechanism
    • 带门开启机构的磁带盒
    • US4646189A
    • 1987-02-24
    • US679240
    • 1984-12-07
    • Shin SasakiTsuneo NemotoShuichi YamashinaHiroyuki Uchida
    • Shin SasakiTsuneo NemotoShuichi YamashinaHiroyuki Uchida
    • G11B23/087G11B23/02
    • G11B23/08735
    • A magnetic tape cassette includes a casing with a substantially straight side along which a peripheral wall has an opening for access to magnetic tape contained in the casing between its top and bottom walls which have edge portions projecting beyond the peripheral wall along the straight side, and a lid member having an elongated plate portion dimensioned to extend along the straight side of the casing and to fit closely between the projecting edge portions and ears projecting from opposite ends of the plate portion for disposition against respective end portions of the peripheral wall. Pivot pins are loosely received in respective, preferably triangular, apertures for connecting the ears of the lid member with the casing to permit pivoting of the lid member and its bodily displacement relative to the casing in directions at right angles to the pivoting axis. Thus, the lid member is movable, by a combination of the pivoting and bodily displacement thereof, between a closed position in which the plate portion is between the projecting edge portions at the straight side of the casing for closing the opening therein and an opened position in which the plate portion of the lid is disposed at the outside of the top or bottom wall of the casing adjacent the respective edge portion. Coil springs are connected between the casing and lid member of pivotally urging the latter to a neutral pivoted position in which the plate portion is centered between the projecting edge portions and bodily urging the lid member, in its neutral pivoted position, toward the straight side of the peripheral wall of the casing.
    • 磁带盒包括具有基本上直的侧面的壳体,周边壁具有用于进入容纳在其顶壁和底壁之间的壳体中的磁带的开口,其具有沿着直边突出超过周壁的边缘部分,以及 具有细长板部分的盖构件,其尺寸设计成沿着壳体的直边延伸并且紧密地配合在突出边缘部分和从板部分的相对端部突出的耳朵之间,用于设置在周壁的相应端部。 枢轴销被松散地接收在相应的,优选三角形的孔中,用于将盖构件的耳部与壳体连接,以允许盖构件的枢转及其相对于壳体在与枢转轴线成直角的方向上的身体位移。 因此,盖构件通过其枢转和身体位移的组合可移动,在关闭位置之间,其中板部分位于用于封闭其开口的壳体的直边处的突出边缘部分之间的打开位置 其中盖的板部分设置在与相应的边缘部分相邻的壳体的顶壁或底壁的外侧。 线圈弹簧连接在壳体和盖构件之间,将其枢转地推动到中间枢转位置,其中板部分在突出边缘部分之间居中,并且将盖构件在其中立的枢转位置中朝向 外壳的周围壁。