JPS6434511U

JPS6434511U -

Info

Publication number: JPS6434511U
Application number: JP12946187U
Authority: JP
Priority date: 1987-08-26
Filing date: 1987-08-26
Publication date: 1989-03-02

Description

[Brief explanation of the drawing]

第１図は本考案の実施例１に使用する回転ブロ
ツクを示す要部断面図、第２図は同上の要部断面
図、第３図は同上の分解斜視図、第４図は同上の
断面図、第５図は同上に使用する回転スリツト円
盤を示す一部切欠正面図、第６図は本考案の実施
例２を示す要部断面図、第７図は従来例を示す要
部断面図、第８図は従来の問題点を示す概略構成
図、第９図は同上の動作説明図である。２１は投光素子、３１はシヤフト、３２は回転
スリツト円盤、３２ａはスリツト、３３は保持ブ
ツシユ、３３ａは突条、３４はホイール押さえ、
３４ａは突条、３５はホイール支持体、４１は受
光素子である。 Fig. 1 is a cross-sectional view of the main parts of the rotating block used in the first embodiment of the present invention, Fig. 2 is a cross-sectional view of the main parts of the same, Fig. 3 is an exploded perspective view of the same, and Fig. 4 is a cross-section of the same. 5 is a partially cutaway front view showing a rotary slit disk used in the above, FIG. 6 is a sectional view of a main part showing a second embodiment of the present invention, and FIG. 7 is a sectional view of a main part showing a conventional example. , FIG. 8 is a schematic diagram showing the conventional problem, and FIG. 9 is an explanatory diagram of the same operation. 21 is a light emitting element, 31 is a shaft, 32 is a rotating slit disk, 32a is a slit, 33 is a holding bush, 33a is a protrusion, 34 is a wheel holder,
34a is a protrusion, 35 is a wheel support, and 41 is a light receiving element.

Claims

[Scope of Claim for Utility Model Registration] (1) A rotatable shaft, a rotating slit disk made of metal fixed at a fixed position on the shaft and having a large number of slits formed at equal intervals in the circumferential direction, and the thickness of the rotating slit disk. In a rotary encoder that is equipped with a light emitting element and a light receiving element that are arranged opposite to each other on both sides of the shaft, and detects the rotation of the shaft based on a change in the output waveform of the light receiving element as the shaft rotates, It has a wheel support body consisting of a holding bush fixed in position and a wheel holder that is fitted into the holding bush while facing in the thickness direction of the rotating slit disk. An optical rotary encoder whose inner periphery is held between a holding bush and a wheel holder. (2) The surface of the holding bush that faces the wheel holder is flat, and the wheel holder is
Claims for Utility Model Registration comprising a first protrusion extending all around the outer periphery of the surface facing the holding bush, and a rotary slit disk being held between the holding bush and the first protrusion. The optical rotary concoder according to item 1. (3) The holding bush has a second protrusion along the entire outer circumference of the surface facing the wheel holder, and the surface of the wheel holder facing the holding bush is flat; The optical rotary encoder according to claim 1, wherein a rotating slit disk is held between a protrusion and a wheel holder.