JPS638617U

JPS638617U -

Info

Publication number: JPS638617U
Application number: JP10214486U
Authority: JP
Priority date: 1986-07-04
Filing date: 1986-07-04
Publication date: 1988-01-20

Description

[Brief explanation of the drawing]

第１図は本考案の第１実施例に係る磁気式ロー
タリエンコーダの断面図、第２図はその磁気式ロ
ータリエンコーダに備えられる保持部材の斜視図
、第３図はその保持部材の正面図、第４図はその
保持部材の展開図、第５図は本考案の第２実施例
に係る保持部材の斜視図、第６図は本考案が適用
される磁気式ロータリエンコーダの従来例を示す
断面図、第７図はその磁気式ロータリエンコーダ
に備えられるデイスクと保持部材の関係を示す底
面図、第８図および第９図は従来例の問題点を説
明するための側面図および正面図である。１…デイスク、１ａ…デイスク面、２…回転軸
、３…磁化パターン、４…磁気センサ、６…ケー
ス、６ａ…平面部、７…ネジ、８…保持部材、８
ａ…センサ取付面、８ｂ…取付基準面、８ｃ…脚
片、８ｄ…取付脚部、９…取付孔、１０…孔、１
１…軸受け。 FIG. 1 is a sectional view of a magnetic rotary encoder according to a first embodiment of the present invention, FIG. 2 is a perspective view of a holding member provided in the magnetic rotary encoder, and FIG. 3 is a front view of the holding member. Fig. 4 is a developed view of the holding member, Fig. 5 is a perspective view of the holding member according to the second embodiment of the present invention, and Fig. 6 is a cross section showing a conventional example of a magnetic rotary encoder to which the present invention is applied. 7 are bottom views showing the relationship between the disk and the holding member provided in the magnetic rotary encoder, and FIGS. 8 and 9 are side and front views for explaining the problems of the conventional example. . DESCRIPTION OF SYMBOLS 1... Disk, 1a... Disk surface, 2... Rotating shaft, 3... Magnetization pattern, 4... Magnetic sensor, 6... Case, 6a... Flat part, 7... Screw, 8... Holding member, 8
a...Sensor mounting surface, 8b...Mounting reference surface, 8c...Leg piece, 8d...Mounting leg portion, 9...Mounting hole, 10...Hole, 1
1...Bearing.

Claims

[Scope of utility model registration request]

a rotatable disk having a magnetization pattern magnetized and arranged on a disk plane; a holding member provided with a flat part of the disk perpendicular to the disk plane as a mounting reference; and a holding member attached to the holding member so as to face the magnetization pattern. A magnetic rotary encoder includes a fixed magnetic sensor and detects a change in the position of the magnetization pattern due to rotational movement of the disk based on a change in the output of an electric signal from the magnetic sensor. The holding member is provided with a sensor mounting surface for holding the magnetic sensor, a pair of leg pieces bent at both ends of the sensor mounting surface and having a mounting reference surface at one end, and a pair of leg pieces having a mounting reference surface on one end. A fixed mounting leg is provided that is bent at a position away from the surface.
The mounting reference surface is constituted by a fractured surface when a flat metal plate is pressed out, and the sensor mounting surface and the leg piece are continuous at a bent portion perpendicular to the plane containing the mounting reference surface. Magnetic rotary encoder.