发明授权
- 专利标题: Television tuner with fine tuning means
- 专利标题(中): 具有微调方式的电视调谐器
-
申请号: US777703申请日: 1977-03-15
-
公开(公告)号: US4123781A公开(公告)日: 1978-10-31
- 发明人: Katsuo Ito , Kazunori Yoshimura
- 申请人: Katsuo Ito , Kazunori Yoshimura
- 申请人地址: JPX Nagaokakyo
- 专利权人: Murata Manufacturing Co., Ltd.
- 当前专利权人: Murata Manufacturing Co., Ltd.
- 当前专利权人地址: JPX Nagaokakyo
- 优先权: JPX51-31540[U] 19760315; JPX51-31541[U] 19760315
- 主分类号: H03J1/14
- IPC分类号: H03J1/14
摘要:
A television tuner including a fine tuning mechanism, said mechanism comprising a cam body provided to a sleeve rotatably disposed around the operating shaft, said cam body having a cam surface adapted to convert rotary motion to reciprocating motion, and fine tuning means including a bobbin having a coil around the outside thereof, and a plunger having at one end a core adapted to be disposed within said bobbin, said plunger being L-shaped and composed of a plunger body provided with a core at one end and an arm portion at the other end, said arm portion being kept in contact with said cam surface at the free end thereof so that the plunger reciprocates said core within said bobbin with the rotation of said sleeve.