JPS5965444U

JPS5965444U - rotary switch

Info

Publication number: JPS5965444U
Application number: JP16182082U
Authority: JP
Inventors: 純二石川; 光一佐藤; 青山　律男
Original assignee: ミツミ電機株式会社
Priority date: 1982-10-26
Filing date: 1982-10-26
Publication date: 1984-05-01

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of drawings]

第１図Ａ−Ｄは夫々本考案になるロータリスイッチの一
実施例を適用したテレビジョンチューナの平面図、側面
図、下面図及び正面図、第２図は上記チューナのシール
ドカバーを取去った状態の側面図、第３図は上記チュー
ナの分解斜視図、第４図は上記チューナのアンテナ同調
回路用コイル保持基板の後面図、第５図及び第６図は夫
々上記チューナの接点ロータ板の分解斜視図及びその基
板への組付状態の縦断面図、第７図及び第８図は夫々上
記チューナの微調軸の操作前及び操作時の状態を示す側
面図、第９図〜第１１図は夫々フレームの各種要部の断
面図、第１２図はフレーム及びベース基板の組付状態を
示す縦断正面図、第１３図は上記チューナのアンテナ同
調回路のコイル保持基板及び接点ロータ板の回路図であ
る。１・・・テレビジョンチューナ、２・・・フレーム、１
４ａ・・・孔、３．４・・・補強板、９・・・ベース基
板、１４、　３１．　３２・・・コイル保持基板、２４
・・・接点ロータ板、２５・・・ロータ板、２５ａ・・
・ボス部、２５Ｃ・・・係合アーム部、２５ｅ・・・嵌
合片部、２５ｆ。２５ｇ・・・窓孔、２６−１．２６−２．２９・・・接
点板、２６２〜２６ｅ・・・接点部、２７・・・接点回
動片、３３・・・局部発振用回路部品保持基板、３５・
・・軸受板、４０・・・局部発振回路ユニット、４１・
・・ドラム、４３・・・コイル保持板、４４・・・円形
基板、４６・・・コア、４６ａ、　５５ａ、　６１ａ、
　６１ｂ−・・ギヤ部、４９・・・基板ユニット、５０
・・・選局軸、５１・・・粗調軸、５４・・・微調軸、
５５・・・微調ギヤ、６１・・・ピニオンギヤ軸、６５
．６６・・・シールドカバー。第１１図　　　　　　第１２図Figures 1A to 1D are a plan view, a side view, a bottom view, and a front view of a television tuner to which an embodiment of the rotary switch of the present invention is applied, respectively, and Figure 2 is the tuner with the shield cover removed. 3 is an exploded perspective view of the tuner, FIG. 4 is a rear view of the antenna tuning circuit coil holding board of the tuner, and FIGS. 5 and 6 are views of the contact rotor plate of the tuner, respectively. An exploded perspective view and a longitudinal cross-sectional view of the assembled state on the board, FIGS. 7 and 8 are side views showing the state before and during operation of the fine adjustment shaft of the tuner, respectively, and FIGS. 9 to 11. 12 is a longitudinal sectional front view showing the assembled state of the frame and base board, and FIG. 13 is a circuit diagram of the coil holding board and contact rotor plate of the antenna tuning circuit of the above tuner. It is. 1... Television tuner, 2... Frame, 1
4a...hole, 3.4...reinforcement plate, 9...base board, 14, 31. 32... Coil holding board, 24
...Contact rotor plate, 25...Rotor plate, 25a...
- Boss part, 25C... Engagement arm part, 25e... Fitting piece part, 25f. 25g...Window hole, 26-1.26-2.29...Contact plate, 262-26e...Contact part, 27...Contact rotating piece, 33...Circuit component holding for local oscillation Substrate, 35・
...Bearing plate, 40...Local oscillation circuit unit, 41.
...Drum, 43...Coil holding plate, 44...Circular substrate, 46...Core, 46a, 55a, 61a,
61b-- Gear part, 49... Board unit, 50
... Tuning axis, 51... Coarse adjustment axis, 54... Fine adjustment axis,
55... Fine adjustment gear, 61... Pinion gear shaft, 65
．． 66...Shield cover. Figure 11 Figure 12

Claims

[Scope of utility model registration request]

A rotary switch in which a rotor having a metal sliding contact is supported on a bearing hole of a substrate having a plurality of contacts and rotated as appropriate, and the sliding contact selectively contacts each of the contacts,
The rotor is integrally formed with a boss portion that is fitted into the bearing hole, and the boss portion is defined by a plurality of axial grooves as a fixing piece portion and an elastic engagement piece portion having a claw portion. A rotary switch configured such that when the fixed piece is fitted into the bearing hole, the fixed piece is brought into sliding contact with the bearing hole, and the claw portion of the elastic engagement piece is engaged with the end of the bearing hole.