JPH0295416U

JPH0295416U -

Info

Publication number: JPH0295416U
Application number: JP167089U
Authority: JP
Priority date: 1989-01-11
Filing date: 1989-01-11
Publication date: 1990-07-30

Description

[Brief explanation of drawings]

第１図はこの考案の実施例の断面図、第２図は
従来の録音レベルつまみの断面図である。１……可変抵抗器本体、２……取付ねじ部、３
……ナツト、４……支持板、５……アングル、６
……外回転軸、７……外つまみベース、９……内
回転軸、１０……内つまみ、１１……外スリツプ
板、１２……外波形リングばね、１３……外ボス
部、１４……内スリツプ板、１５……内波形リン
グばね、１６……内ボス部、１７……外防滴弾性
シート、１８……固定ボス、１９……内防滴弾性
シート、２０……外つまみ、２５……ケース。 FIG. 1 is a sectional view of an embodiment of this invention, and FIG. 2 is a sectional view of a conventional recording level knob. 1...Variable resistor body, 2...Mounting screw part, 3
...Natsuto, 4...Support plate, 5...Angle, 6
...Outer rotating shaft, 7...Outer knob base, 9...Inner rotating shaft, 10...Inner knob, 11...Outer slip plate, 12...Outer wave ring spring, 13...Outer boss portion, 14... ...Inner slip plate, 15...Inner wave ring spring, 16...Inner boss portion, 17...Outer drip-proof elastic sheet, 18...Fixed boss, 19...Inner drip-proof elastic sheet, 20...Outer knob, 25...case.

Claims

[Claims for Utility Model Registration] (1) In a knob device used for a variable impedance element having an independently rotatable outer rotary shaft and an inner rotary shaft coaxially for manipulating an impedance value, the main body of the variable impedance element a ring-shaped outer knob fixed to the outer rotating shaft, an inner knob fixed to the inner rotating shaft and housed within the outer knob, and a press between the supporting plate and the outer knob. an external elastic body interposed in the state;
The inner elastic body interposed between the outer knob and the inner knob and the rotational frictional resistance generated between the inner knob and the outer knob due to the pressing force of the inner elastic body are controlled by the pressing force of the outer elastic body. A knob device comprising means for making the rotational friction resistance smaller than the rotational frictional resistance generated between the outer knob and the support plate. (2) An outer slip plate and an inner slip plate are interposed between the outer knob and the outer elastic body and between the inner knob and the inner elastic body, respectively, so that the inner surface of the hole of the case into which the outer knob is loosely fitted and the An inner drip-proof elastic sheet that closes the gap between the outer knob and the inner knob is sandwiched between the outer knob and the outer slip plate, and an inner drip-proof elastic sheet that closes the gap between the inner surface of the outer knob and the inner knob. 2. The knob device according to claim 1, wherein an elastic sheet is sandwiched between the inner knob and the inner slip plate.