JPS5966994U

JPS5966994U - Tape remaining amount measuring device

Info

Publication number: JPS5966994U
Application number: JP16380582U
Authority: JP
Inventors: 板井　冨美雄
Original assignee: 株式会社東芝
Priority date: 1982-10-28
Filing date: 1982-10-28
Publication date: 1984-05-07

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]

第１図はリール台の回転周期を検出することによりテー
プ残量を測定する方式の一例を説明する為に示したテー
プ巻回状態を示す図、第２図はリール台の回転周期を検
出する為の従来構成を示す図、第３図はこの考案に係る
テープ残量測定装置の一実施例の要部を示す平面図、第
４図は第３図に示す装置に於いてリール台の回転周期検
出用のパルスを出力する構成の一例を示す平面図、第５
図は第３図中に示すギヤ機構の減速比の設定の仕方を説
明する為の図、第６図は一実施例の効果の１つを説明す
る為に示したリール軸に対するテープ巻き外周の変化を
示す図である。２１・・・供給リール台、２２・・・巻取りリール台、
２３・・・供給リール台駆動用モータ、２４・・・巻取
りリール台駆動用モータ、２５．２７・・・噛状面、２
６．２８・・・歯車、３０・・・マグネット、３１・・
・ホール素子。Figure 1 is a diagram showing the state of tape winding, shown to explain an example of a method for measuring the remaining amount of tape by detecting the rotation period of the reel stand, and Figure 2 is a diagram showing the state of tape winding by detecting the rotation period of the reel stand. FIG. 3 is a plan view showing the essential parts of an embodiment of the tape remaining amount measuring device according to the invention, and FIG. 4 is a diagram showing the rotation of the reel stand in the device shown in FIG. 3. FIG. 5 is a plan view showing an example of a configuration for outputting pulses for period detection;
The figure is a diagram for explaining how to set the reduction ratio of the gear mechanism shown in FIG. It is a figure showing a change. 21... Supply reel stand, 22... Take-up reel stand,
23... Supply reel stand driving motor, 24... Take-up reel stand driving motor, 25.27... Bit-like surface, 2
6.28...Gear, 30...Magnet, 31...
·Hall element.

Claims

[Scope of utility model registration request]

In a tape remaining amount measuring device that uses the rotation period of the reel stand on the tape feeding side as tape remaining amount measurement information, a first motor dedicated to driving the supply reel stand and a motor that is synchronized with the rotation of this first motor are used. a first pulse generating means for generating pulses; a first gear means whose reduction ratio is set so that an integral number of pulses can be obtained from the first pulse generation means; a second motor dedicated to driving the take-up reel; a second pulse generating means for synchronously generating pulses; and a second pulse generating means for supplying the rotational torque of the second motor to the take-up reel stand, the second pulse generating means being configured to generate the second pulse per rotation of the take-up reel stand. and a second gear means with a reduction ratio set so that an integral number of pulses can be obtained from the generating means, and the supply reel stand or the take-up reel stand rotates as a reel stand on the tape feeding side. 1. A tape remaining amount measuring device, characterized in that the rotation period of the reel stand is detected by the pulse output of the pulse generating means in the above-mentioned state.