公开(公告)号：US3994177A

公开(公告)日：1976-11-30

申请号：US558729

申请日：1975-03-17

申请人： Norman D. Cappelle ,  Walter Meyer ,  Henry H. Tap

发明人： Norman D. Cappelle ,  Walter Meyer ,  Henry H. Tap

IPC分类号： H03J5/30 ,  F16H35/18

CPC分类号： H03J5/30 ,  Y10T403/7098

摘要： A TV tuner has a housing and a rotating channel selector shaft mounted on the housing. There are a plurality of individual support members positioned by and mounted on parallel flatted areas of the shaft, which flatted areas vary in size to assure correct placement of the support members. Individual coil strips, each carrying a tuning screw, are fixed to the shaft assembly. A simplified clutching arrangement for controlling adjustment of the screws utilizes a coil spring to provide the initial force for moving a pinion gear into operating engagement with the tuning screws. The tuning screws are held by resilient arms which bias the head of the screws toward the shaft to thus firmly maintain the screws in any adjusted position. Each of the coil strips have contacts extending outwardly from one side and positioned to be in electrical and mechanical contact with cantilever spring members fastened to a printed circuit board which in turn is held by the housing.

摘要翻译： 电视调谐器具有壳体和安装在壳体上的旋转通道选择器轴。 存在多个单独的支撑构件，其定位并安装在轴的平行平面区域上，该平坦区域的尺寸变化以确保支撑构件的正确放置。 每个带有调谐螺钉的线圈条固定在轴组件上。 用于控制螺钉调节的简化的夹紧装置利用螺旋弹簧来提供用于使小齿轮移动与调谐螺钉操作接合的初始力。 调谐螺丝由弹性臂保持，弹性臂将螺钉的头部朝向轴偏压，从而将螺钉牢固地保持在任何调节位置。 每个线圈条具有从一侧向外延伸的触点，并定位成与固定到印刷电路板的悬臂弹簧元件电接触和机械接触，印刷电路板又由壳体保持。