JPS58141447U

JPS58141447U - Intermittent gear intermittent actuation device

Info

Publication number: JPS58141447U
Application number: JP3985182U
Authority: JP
Inventors: 征志高尾
Original assignee: ソニー株式会社
Priority date: 1982-03-19
Filing date: 1982-03-19
Publication date: 1983-09-22

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 the drawing]

図面は本考案をフロントローディングタイプのビデオテ
ープレコーダに適用したカセットオートチェンジャーの
一実施例を示したものであって、第１図はビデオテープ
レコーダにカセットオートチェンジャーを装着した状態
の斜視図、第２図はカセツチオートチェンジャーの断面
図、第３図は送りローラの駆動系を示した斜視図、第４
図はストック部におけるカセットのストック状態を説明
する斜視図、第５図はカセット落し動作を行う為の駆動
系の動作を説明する斜視図、第６Ａ図〜第６Ｃ図は同上
の動作を説明する側面図、第７図は欠歯ギヤとトリガー
レバ′−とを示した斜視図、第８Ａ図及び第８Ｂ図は欠
歯ギヤのカム溝とトリガーレバーとの係合状態を説明す
る側面図、第９Ａ図〜第９Ｃ図は同上の係合状態を説明
すべくカム溝を展開して示した断面図である。また図面に用いられた符号において、４・・・・・・カ
セットオートチェンジャー、２０・・・・・・モータ、
５１・・・・・・駆動ギヤ、５２・・間欠歯部、５３・
・曲欠歯ギヤ、５３ａ・・・・・・欠歯ギヤの外側の側
面、５３ｂ・・・・・・欠歯ギヤの内側の側面、５４・
・・・・・カム、５５・・・・・・トリガーレバ゛−１
５５ａ・・・・・・トリガーレバーの先端部、５６・・
曲プランジャーソレノイド、５７・・・・・・支点軸、
５８・・曲スプリング、６２・・曲カム溝、６２ａ・・
曲カム溝のＶ字状屈曲部、６３・・・・・・最深部、６
４・・・・・・最浅部、６５・・・・・・段部、６６・
・・・・・斜面、６８・・・・・・ピンである。The drawings show an embodiment of a cassette auto changer in which the present invention is applied to a front-loading type video tape recorder, and FIG. 1 is a perspective view of the cassette auto changer installed in the video tape recorder, and FIG. Figure 3 is a cross-sectional view of the cassette auto changer, Figure 3 is a perspective view showing the drive system of the feed roller, and Figure 4 is a cross-sectional view of the cassette auto changer.
The figure is a perspective view illustrating the stock condition of the cassette in the stock section, FIG. 5 is a perspective view illustrating the operation of the drive system for performing the cassette dropping operation, and FIGS. 6A to 6C are illustrative of the same operation as above. 7 is a perspective view showing the partially toothed gear and the trigger lever, and FIGS. 8A and 8B are side views illustrating the state of engagement between the cam groove of the partially toothed gear and the trigger lever. 9A to 9C are cross-sectional views showing developed cam grooves to explain the engaged state of the same as above. In addition, in the symbols used in the drawings, 4...cassette autochanger, 20...motor,
51... Drive gear, 52... Intermittent tooth portion, 53...
・Curved toothless gear, 53a...Outer side surface of the toothless gear, 53b...Inner side surface of the toothless gear, 54.
...Cam, 55...Trigger lever-1
55a... Tip of the trigger lever, 56...
Curved plunger solenoid, 57... Fulcrum shaft,
58...Curved spring, 62...Curved cam groove, 62a...
V-shaped bent part of curved cam groove, 63... Deepest part, 6
4... Shallowest part, 65... Stepped part, 66.
... Slope, 68 ... Pin.

Claims

[Scope of utility model registration request]

A partially toothed gear having a partially rotated drive gear is placed near the constantly rotating drive gear, and when the partially toothed gear is in a non-meshing state where the partially toothed gear is opposed to the drive gear by the partially rotated drive gear, a rotation trigger is applied to the partially rotated gear. By applying this, the toothless gear is meshed with the drive gear and driven one rotation, and when the toothless gear that has been driven one revolution is again in a non-meshing state where it is opposed to the drive gear by its toothless portion. In an intermittent actuating device for a partially toothed gear configured to lock the partially toothed gear in that position, the partially toothed gear has an annular shape on the side surface thereof, and a portion thereof is directed toward the rotation center side of the partially toothed gear. >' A cam groove having a V-shaped bent part is provided, and one side of the cam groove in the V-shaped bent part is located at the most in the thickness direction of the partially toothed gear. It is formed at the deepest part of the deeply recessed part, and the other side of the V-shaped bent part is formed at the shallowest part, opposite to the deepest part, and on the other hand, in a plane parallel to the side surface of the gear with missing teeth. A trigger lever is provided, which is configured to be freely rotatable, and has a pin provided at its tip engaged in the cam groove. The pin of the trigger lever is engaged with the deepest part of the cam groove, and the trigger lever is held in a predetermined position by a spring. By holding the partially toothed gear in the non-meshing position, the partially toothed gear is locked in the non-meshing state, and the trigger lever is rotated at a predetermined angle against the spring by one trigger means.
The rotation trigger is applied to the partially toothed gear by the cam action between the pin and the deepest part of the cam groove, and when the rear partially toothed gear is driven one rotation, the pin is moved along the cam groove. An intermittent gear with intermittent teeth, characterized in that the trigger lever is moved relative to each other and is configured to bend the tip of the trigger lever against elasticity when the pin enters the deepest part via the shallowest part. Actuation device.