JPS6267291U - - Google Patents

Description

【図面の簡単な説明】[Brief explanation of drawings]

第１図は本考案の参考例、第２図は本考案の一
実施例をそれぞれ示すシステム構成図、第３図ａ
，ｂ，ｃは駆動波形図、第４図ａ，ｂ，ｃ，ｄ夫
々は本考案を適用した時計の外観例の平面図であ
る。 ７……逆転止外し機構、１００，２００，３０
０……往復運針システム、１２……逆転波形整形
回路、１３……切換回路、１７……計数回路。 Figure 1 is a reference example of the present invention, Figure 2 is a system configuration diagram showing an embodiment of the present invention, and Figure 3 a.
, b, and c are drive waveform diagrams, and FIGS. 4a, b, c, and d are plan views of external examples of a timepiece to which the present invention is applied, respectively. 7... Reverse stop release mechanism, 100, 200, 30
0... Reciprocating hand movement system, 12... Reverse waveform shaping circuit, 13... Switching circuit, 17... Counting circuit.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] ステツプモーターによる指針駆動を行う電子・
機械的システムにおいて、該システムは指針を正
方向に駆動する正転用駆動波形作成手段と指針を
逆方向に駆動する逆転用駆動波形作成手段と、前
記両波形作成手段の出力の一方をステツプモータ
ーの駆動信号として供給する切換回路手段と、前
記正転用駆動波形又は逆転用駆動波形の生起数を
計数しその計数値が所定数に達すると前記切換回
路手段の動作を反転させる回路手段とを備え、更
に前記システムによつて規定された指針の往復運
動表示の掃引範囲外に他の表示部を併設したこと
を特徴とする往復表示針式電子時計。 An electronic system that drives the pointer using a step motor.
In a mechanical system, the system includes a forward rotation drive waveform generation means for driving the pointer in the forward direction, a reverse rotation drive waveform generation means for driving the pointer in the reverse direction, and one of the outputs of the two waveform generation means is connected to a step motor. comprising a switching circuit means for supplying as a drive signal, and a circuit means for counting the number of occurrences of the forward rotation drive waveform or the reverse rotation drive waveform and reversing the operation of the switching circuit means when the counted value reaches a predetermined number; A reciprocating hand type electronic timepiece further comprising another display section outside the sweep range of the reciprocating movement display of the hands defined by the system.