JPH01174732U

JPH01174732U -

Info

Publication number: JPH01174732U
Application number: JP7156188U
Authority: JP
Priority date: 1988-05-30
Filing date: 1988-05-30
Publication date: 1989-12-12

Description

[Brief explanation of the drawing]

第１図はこの考案に係るリール駆動装置を示す
正面図、第２図は第１図に示すリール駆動装置を
示す平面図、第３図はこの考案に係るリール駆動
装置のクラツチ力可変機構を示す要部断面図、第
４図はこの考案に係るリール駆動装置を用いてク
ラツチ力を一番高めたときの状態を示す正面図、
第５図はこの考案に係るリール駆動装置を用いて
クラツチ力を一番弱めたときの状態を示す正面図
、第６図はビデオテープレコーダにおいてＰＬＡ
Ｙモード時等でのテープの走行駆動状態を示す説
明図、第７図は従来のクラツチ手段を取付けたリ
ール駆動装置を示す正面図、第８図は第７図に示
すリール駆動装置を示す平面図である。３……クラツチ手段、５……クラツチ力可変機
構、１０……駆動ギヤ、１９……アイドラ、２１
……移動体、２１ａ〜２１ｃ……作動面、２２…
…駆動レバー、２３……上下動レバー、２５……
（圧縮）バネ、２６……係止ピン、２７……回動
ピン、２９……連結部、３０……リフタ。 Fig. 1 is a front view showing a reel drive device according to this invention, Fig. 2 is a plan view showing the reel drive device shown in Fig. 1, and Fig. 3 is a clutch force variable mechanism of the reel drive device according to this invention. FIG. 4 is a front view showing the state when the clutch force is maximized using the reel drive device according to the invention;
FIG. 5 is a front view showing the state when the clutch force is the weakest using the reel drive device according to this invention, and FIG.
An explanatory diagram showing the tape running drive state in Y mode etc., FIG. 7 is a front view showing a reel drive device with a conventional clutch means attached, and FIG. 8 is a plan view showing the reel drive device shown in FIG. 7. It is a diagram. 3... Clutch means, 5... Clutch force variable mechanism, 10... Drive gear, 19... Idler, 21
...Moving body, 21a to 21c...Operating surface, 22...
... Drive lever, 23 ... Vertical movement lever, 25 ...
(compression) spring, 26...locking pin, 27...rotating pin, 29...connecting portion, 30...lifter.

Claims

[Scope of Claim for Utility Model Registration] Equipped with a clutch force variable mechanism that appropriately adjusts the tension force on the running tape when the tape is wound up or rewound by the rotating operation of the reel stand that presses the tape against the idler. A reel driving device, wherein the variable clutch force mechanism has a step-like operating surface of at least three stages, and a moving body whose operating surface moves relative to the chassis with the mode switching operation; and movement of the moving body. a drive lever that has a locking pin on one end that rotates while being in pressure contact with the operating surface when operated, and has a rotation pin on the other end and is rotatable with respect to the chassis; The idler has a connecting part connected to the rotation pin on the base end side, and the idler rotates by transmitting the rotational force of the drive gear from the drive gear side through the clutch means, which rotates by transmitting the rotational force of the motor. a lifter on the tip side that moves up and down in at least three steps while pressing a spring in order to change the tension of the tape and adjust the tension of the tape; A reel drive device characterized in that the tension of the tape is changed and adjusted in multiple stages according to the strength of the winding force of the tape by a motor.