JPS6228176U - - Google Patents

Description

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

第１図は本考案の一実施例の取付状態を示す図
、第２図は同上実施例のスリツトデイスクの部分
拡大図、第３図は同上実施例の電気回路図、第４
図は同上実施例の制御フローチヤート、第５図は
フオトカプラの出力状態を示す図、第６図は回転
方向識別パターンを示す図、第７図は従来例を示
す簡略構成図である。 １１……ステアリングシヤフト、１２……スリ
ツトデイスク、１３……第１スリツト群、１４…
…第２スリツト群、１３ａ，１４ａ……スリツト
、１５……フオトカプラ、１６……バツテリ、１
７……検出回路。 Fig. 1 is a diagram showing an installed state of one embodiment of the present invention, Fig. 2 is a partially enlarged view of the slit disk of the embodiment same as the above, Fig. 3 is an electric circuit diagram of the embodiment same as the above, and Fig. 4
5 is a diagram showing the output state of the photocoupler, FIG. 6 is a diagram showing a rotation direction identification pattern, and FIG. 7 is a simplified configuration diagram showing a conventional example. 11... Steering shaft, 12... Slit disk, 13... First slit group, 14...
...Second slit group, 13a, 14a...Slit, 15...Photocoupler, 16...Battery, 1
7...Detection circuit.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 外周近傍全周に略等間隔で設けたスリツトから
なる第１スリツト群と、該第１スリツト群より内
方に同じく全周に略等間隔で設けたスリツトから
なる第２スリツト群とを有し、両スリツト群のス
リツトが周方向において互いに部分的に重なり合
う位置関係となるよう形成した円板部材をステア
リングシヤフトに連動して回転する構成とする一
方、前記円板部材のスリツト群形成部を挾んで一
側に少なくとも１つの発光素子を有し、他側に発
光素子と対向し該発光素子からの光を第１及び第
２スリツト群の各スリツトを介してそれぞれ受光
して出力する２つの受光素子を有するフオトカプ
ラを設けると共に、ステアリング操舵時、前記フ
オトカプラの２つの出力パルスが所定回数入力し
た後、２つの出力パルス状態を所定サンプリング
時間毎に検出し、初回の出力パルス状態とそれ以
後の出力パルスが変化したときの出力パルス状態
とに基づいてステアリングシヤフトの回転方向を
識別して回転方向検出信号を出力する回転方向検
出手段を設けて構成したことを特徴とするステア
リングシヤフト回転センサ。 It has a first slit group consisting of slits provided at approximately equal intervals around the entire circumference near the outer periphery, and a second slit group consisting of slits also provided at approximately equal intervals around the entire circumference inwardly from the first slit group. A disc member is configured to rotate in conjunction with a steering shaft, and the disc member is formed so that the slits of both slit groups partially overlap each other in the circumferential direction, and the slit group forming portion of the disc member is sandwiched between the disc members. and two light receivers having at least one light emitting element on one side and facing the light emitting element on the other side and receiving and outputting light from the light emitting element through each slit of the first and second slit groups. In addition to providing a photocoupler having an element, during steering operation, after the two output pulses of the photocoupler are input a predetermined number of times, the two output pulse states are detected at predetermined sampling times, and the initial output pulse state and subsequent outputs are detected. A steering shaft rotation sensor comprising a rotation direction detection means for identifying the rotation direction of the steering shaft based on the output pulse state when the pulse changes and outputting a rotation direction detection signal.