JPS6233382Y2

JPS6233382Y2 -

Info

Publication number: JPS6233382Y2
Application number: JP413480U
Authority: JP
Priority date: 1980-01-17
Filing date: 1980-01-17
Publication date: 1987-08-26
Also published as: JPS56105931U

Description

【考案の詳細な説明】本考案はラジオ受信機のチユーニング機構に関
するものである。[Detailed Description of the Invention] The present invention relates to a tuning mechanism for a radio receiver.

従来微同調機構を備えたラジオ受信機のチユー
ニング機構に於いては、主同調用摘子とは別に微
同調用ボリウム等微同調用素子を操作するための
微同調用摘子を設けていた。 In the conventional tuning mechanism of a radio receiver equipped with a fine-tuning mechanism, a fine-tuning knob for operating a fine-tuning element such as a fine-tuning volume is provided separately from a main tuning knob.

しかし最近では前面操作型の機種もあり、その
場合は特にスペースの問題により同調摘子を二重
にして内側の摘子を主同調用摘子として使用し、
外側の摘子を微同調用摘子として使用する要望が
出てきている。 However, recently there are also front-operated models, and in that case, due to space issues, the tuning knobs are doubled and the inner knob is used as the main tuning knob.
There has been a demand for using the outer knob as a knob for fine tuning.

本考案はチユーニングシヤフトにフライホイー
ルを取付けた高級機種のラジオ受信機に於いて、
上記の要望を満足するようにしたチユーニング機
構を提案するもので、以下本考案の一実施例を図
面に従い説明する。 This invention is used in high-end radio receivers with a flywheel attached to the tuning shaft.
A tuning mechanism that satisfies the above requirements is proposed, and one embodiment of the present invention will be described below with reference to the drawings.

１，２は夫々チユーニングシヤフト３の内軸を
構成するシヤフト、及び外軸を構成するスリー
ブ、４はベアリングで六角ナツト５にてシヤーシ
６に取付けられている。７はフライホイールで、
スリーブ２にネジ８にて取付けられている。９は
主同調用摘子でスリーブ２に差込まれている。１
０は微同調用摘子でシヤフト１の先端部に取付け
られている。１１はスリーブ２に設けたダイヤル
ロープ巻付用凹所で、該凹所に巻付けられたダイ
ヤルロープ１２は更にバリコンドラム（図示せ
ず）に巻付けられバリコン（図示せず）を駆動す
る様にしている。 Reference numerals 1 and 2 denote a shaft constituting the inner shaft of the tuning shaft 3, and a sleeve constituting the outer shaft, respectively; 4 a bearing, which is attached to the chassis 6 with a hexagonal nut 5; 7 is the flywheel,
It is attached to the sleeve 2 with screws 8. 9 is a main tuning knob inserted into the sleeve 2. 1
0 is a knob for fine tuning and is attached to the tip of the shaft 1. 11 is a recess provided in the sleeve 2 for winding a dial rope, and the dial rope 12 wound around the recess is further wound around a variable capacitor drum (not shown) to drive a variable capacitor (not shown). I have to.

１３はパリコンに並列に接続された微同調用可
変容量ダイオード（図示せず）に制御電圧を加え
るための微同調用ボリウムで、該微同調用ボリウ
ムはブラケツト１４によりシヤーシ６に設けたボ
ス１５，１５に取付けられている。又微同調用ボ
リウム１３の軸１６の先端部はジヨイント１７を
介してシヤフト１の後端部に連結されている。１
８は抜け止めリングである。 Reference numeral 13 denotes a fine tuning volume for applying a control voltage to a fine tuning variable capacitance diode (not shown) connected in parallel to the paricon. It is attached to 15. The tip of the shaft 16 of the fine tuning volume 13 is connected to the rear end of the shaft 1 via a joint 17. 1
8 is a retaining ring.

斯様に構成したチユーニング機構に於いて、今
主同調用摘子９を回転操作すれば、スリーブ２が
回転し、ダイヤルロープ１２が動き、パリコンが
回転して選局が行なわれる。尚、微同調用ボリウ
ム１３の摺動抵抗は通常数百グラム（例えば、
300〜600グラム）程度あり、シヤフト１とスリー
ブ２間の摺動抵抗は通常この摺動抵抗より小さく
設定される為、シヤフト１は回転せず微同調用ボ
リウム１３は回転しない。 In the tuning mechanism constructed in this manner, when the main tuning knob 9 is now rotated, the sleeve 2 is rotated, the dial rope 12 is moved, and the paricon is rotated to perform channel selection. The sliding resistance of the fine tuning volume 13 is usually several hundred grams (for example,
Since the sliding resistance between the shaft 1 and the sleeve 2 is usually set smaller than this sliding resistance, the shaft 1 does not rotate and the fine tuning volume 13 does not rotate.

又微同調用摘子１０を回した場合は、スリーブ
２はフライホイール７の慣性とダイヤルロープ１
２の抵抗により回転せず、シヤフト１のみが回転
し、ジヨイント１７を介して微同調用ボリウム１
３を回転させることになる。 Also, when the fine tuning knob 10 is turned, the sleeve 2 is affected by the inertia of the flywheel 7 and the dial rope 1.
2 does not rotate due to resistance, only shaft 1 rotates, and fine tuning volume 1 is connected via joint 17.
3 will be rotated.

以上の様に本考案のチユーニング機構は、チユ
ーニングシヤフトを外軸と内軸とで構成し、外軸
に主同調用摘子とフライホイールとを取付け、内
軸の先端部に微同調用摘子を取付けるとともに、
内軸の後端部はジヨイントを介して微同調用素子
を連結する様にしたので、主同調用摘子と微同調
用摘子とは二重摘子の構成となり、スペースの面
で有利となる。従つて本考案は、微同調機構を備
え、チユーニングシヤフトにフライホイールを取
付けた高級機種のラジオ受信機に用いて極めて好
適である。 As described above, the tuning mechanism of the present invention consists of a tuning shaft consisting of an outer shaft and an inner shaft, a main tuning knob and a flywheel are attached to the outer shaft, and a fine tuning knob is attached to the tip of the inner shaft. Along with installing the child,
Since the rear end of the inner shaft is connected to the fine tuning element via a joint, the main tuning knob and the fine tuning knob are configured as a double knob, which is advantageous in terms of space. Become. Therefore, the present invention is extremely suitable for use in high-end radio receivers that are equipped with a fine tuning mechanism and have a flywheel attached to a tuning shaft.

[Brief explanation of the drawing]

図面は本考案に係るラジオ受信機のチユーニン
グ機構を示す断面図である。１……シヤフト、２………スリーブ、７……フ
ライホイール、９……主同調用摘子、１０……微
同調用摘子、１３……微同調用ボリウム、１７…
…ジヨイント。 The drawing is a sectional view showing a tuning mechanism of a radio receiver according to the present invention. 1... Shaft, 2... Sleeve, 7... Flywheel, 9... Main tuning knob, 10... Fine tuning knob, 13... Fine tuning volume, 17...
...Jointo.

Claims

[Claims for Utility Model Registration] (1) The tuning shaft is composed of an outer shaft and an inner shaft having a dial rope winding part around which a dial rope for driving a dial drum is wound, and the outer shaft has a main tuning shaft. A radio receiver in which a knob for fine tuning and a flywheel are attached, a knob for fine tuning is attached to the tip of the inner shaft, and a rear end of the inner shaft is connected to a fine tuning element via a joint. tuning mechanism. (2) The tuning mechanism for a radio receiver according to claim 1, wherein the fine tuning element is a fine tuning volume.