JPS5940856U

JPS5940856U - rotation speed detector

Info

Publication number: JPS5940856U
Application number: JP13500882U
Authority: JP
Inventors: 森本　嘉彦; 実吉　秀郎; 神原　明海
Original assignee: 富士重工業株式会社
Priority date: 1982-09-06
Filing date: 1982-09-06
Publication date: 1984-03-15
Also published as: JPS626537Y2

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

第１図は従来の回転数検出器の側断面図、第２図は同検
出器の平面図、第３図のＡは磁電変素子のヒステリシス
特性図、Ｂは多極着磁の回転による交番磁束密度波形図
、Ｃは磁電変換素子ＡでＢの交番磁束密度を検出した時
の矩形パルス図、第４図は本考案の実施例の側断面図、
第５図は本考案の実施例の磁石間の磁束密度分布を示す
図、第６図は磁電変換素子のバラツキによる多極磁石の
交番磁束密度波形の調整解説図で、イ、町よ磁電変換素
子、ハは正規な設定位置関係にある時の多極磁石の交番
磁束密度波形図、二は本考案による作用を用いて多極磁
石の交番磁束密度波形を移動させた時の波形図である。１・・・回転軸、２・・・回転体、３・・・リング状磁
石、４・・・円筒ブロック、５・・・磁電変換素子、６
・・・単極磁石、７・・・ねじ、８・・・溝。Figure 1 is a side sectional view of a conventional rotation speed detector, Figure 2 is a plan view of the same detector, Figure 3 A is a hysteresis characteristic diagram of the magnetoelectric transformation element, and B is alternation due to rotation of multipole magnetization. A magnetic flux density waveform diagram, C is a rectangular pulse diagram when the alternating magnetic flux density of B is detected by magnetoelectric conversion element A, FIG. 4 is a side sectional view of an embodiment of the present invention,
Fig. 5 is a diagram showing the magnetic flux density distribution between the magnets in the embodiment of the present invention, and Fig. 6 is a diagram explaining the adjustment of the alternating magnetic flux density waveform of the multipolar magnet due to variations in the magnetoelectric conversion elements. Element C is an alternating magnetic flux density waveform diagram of the multipolar magnet when it is in the normal setting position relationship, and 2 is a waveform diagram when the alternating magnetic flux density waveform of the multipolar magnet is moved using the action according to the present invention. . DESCRIPTION OF SYMBOLS 1... Rotating shaft, 2... Rotating body, 3... Ring-shaped magnet, 4... Cylindrical block, 5... Magnetoelectric conversion element, 6
... Single pole magnet, 7... Screw, 8... Groove.

Claims

[Scope of utility model registration request]

A multi-magnetized ring-shaped magnet is attached to a non-magnetic rotating body fixed to a rotating shaft, and a magneto-electric transducer is placed close to and facing the ring-shaped magnet on the fixed side, with the magneto-electric transducer being sandwiched between the rings. A rotation speed detector comprising a unipolar magnet on the opposite side of the shaped magnet, and a distance from the magnetoelectric conversion element to the magnetoelectric conversion element can be adjusted.