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    • 7. 发明授权
    • Zoom dial mechanism
    • 缩放拨号机制
    • US07995288B2
    • 2011-08-09
    • US12656031
    • 2010-01-14
    • Kenichi MaruyamaYusuke DoiHiroshi Yamakose
    • Kenichi MaruyamaYusuke DoiHiroshi Yamakose
    • G02B15/14
    • G05G1/12G02B7/10H04N1/00397H04N1/00496H04N1/195H04N1/19594H04N2201/0436
    • A zoom dial mechanism includes a zoom dial mounted on a base plate so as to extend through a central hole of the base plate and so as to be turnable, a coil spring mounted on the base plate to urge the zoom dial toward a neutral position, and a push knob mounted in a central hole of the dial. The base plate has a groove concentric with the central hole. The coil spring is mounted in the groove. The mechanism further includes a first rib fixed to the dial so as to abut one end of the coil spring and a second rib fixed to the dial so as to abut the other end of the spring. The spring is compressed by the first rib when the dial is turned clockwise, and the coil spring is compressed by the second rib when the dial is turned counterclockwise.
    • 变焦拨盘机构包括安装在基板上的变焦拨盘,以便延伸穿过基板的中心孔并且可转动;安装在基板上的螺旋弹簧,以将变焦拨盘推向中立位置, 以及安装在表盘中心孔中的按钮。 基板具有与中心孔同心的凹槽。 螺旋弹簧安装在槽中。 该机构还包括固定在表盘上以抵接螺旋弹簧的一端的第一肋和固定在表盘上的第二肋,以抵靠弹簧的另一端。 当表盘顺时针转动时,弹簧被第一肋压缩,当表盘逆时针转动时,弹簧被第二肋压缩。