JPH01136417U - - Google Patents

Description

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

第１図は本考案による一実施例の斜視図、第２
図は同回転軸に垂直な方向から見た平面図、第３
図は同受光素子の出力を説明する図、第４図は同
各受光素子の出力を加算した時の出力を表わす図
、第５図は従来例の斜視図である。 １……ステツピングモータ、２……回転軸、３
……発光素子、４……受光素子、５……光遮断板
、６……カツプリング、７……エンコーダ。 Fig. 1 is a perspective view of one embodiment of the present invention;
The figure is a plan view seen from the direction perpendicular to the rotation axis.
This figure is a diagram for explaining the output of the same light receiving element, FIG. 4 is a diagram showing the output when the outputs of the respective light receiving elements are added, and FIG. 5 is a perspective view of a conventional example. 1... Stepping motor, 2... Rotating shaft, 3
... Light emitting element, 4 ... Light receiving element, 5 ... Light blocking plate, 6 ... Coupling, 7 ... Encoder.

Claims (1)

【実用新案登録請求の範囲】 １ 回転軸２の周囲かつ近傍に平行光を発する発
光素子３，３……と光量に対して出力がリニアな
発光素子４，４……とを対になる様、同軸上に軸
方向へ配置し、隣接する前記発光素子３，３……
と前記受光素子４，４……の対は、互いに円周上
、ラツプする様に設け、回転軸２上に光遮断板５
を固定し、前記受光素子４，４……の出力を加算
し、回転位置を検出することを特徴とする回転位
置検出装置。 ２ 前記光遮断板５の幅を受光素子４の１個分の
検出範囲とした請求項１の回転位置検出装置。[Claims for Utility Model Registration] 1. Light emitting elements 3, 3... that emit parallel light around and near the rotating shaft 2 and light emitting elements 4, 4... whose output is linear with respect to the amount of light are paired. , arranged coaxially in the axial direction and adjacent to each other, the light emitting elements 3, 3...
The pairs of light receiving elements 4, 4, .
A rotational position detection device characterized in that the rotational position is detected by fixing the light receiving elements 4, 4, . . . and adding the outputs of the light receiving elements 4, 4... 2. The rotational position detecting device according to claim 1, wherein the width of the light shielding plate 5 is a detection range of one light receiving element 4.