JPS5889872U

JPS5889872U - magnetic sensor

Info

Publication number: JPS5889872U
Application number: JP14681682U
Authority: JP
Inventors: 祐三阿部; 矢崎　武人; 純一八田; 善里　順信; 正彦堤
Original assignee: 三洋電機株式会社
Priority date: 1982-09-27
Filing date: 1982-09-27
Publication date: 1983-06-17

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) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

第１図は、磁気センサの回路構成を示す概略図、第２図
は、従来例磁気センサを示す断面図、第３図は本考案−
実施例断面図、第４図イ９口は、従来例及び実施例の動
作を説明する波形図である。１・・・永久磁石、Ｍ□１Ｍ２・・・磁気抵抗素子、２
・・・出力端子、３，３′・・・ペレット、４・・・磁
性体、５・・・容器、８・・・ペレット側壁、６・・・
容器側壁、７・・・検出板。FIG. 1 is a schematic diagram showing the circuit configuration of a magnetic sensor, FIG. 2 is a cross-sectional view showing a conventional magnetic sensor, and FIG. 3 is a diagram showing a conventional magnetic sensor.
The sectional view of the embodiment and FIG. 4A-9 are waveform diagrams for explaining the operations of the conventional example and the embodiment. 1... Permanent magnet, M□1M2... Magnetoresistive element, 2
... Output terminal, 3, 3'... Pellet, 4... Magnetic material, 5... Container, 8... Pellet side wall, 6...
Container side wall, 7...detection plate.

Claims

[Scope of utility model registration request]

A pair of magnetoresistive elements placed on a pellet are magnetically biased by magnets placed close to each other, and disturbances in the magnetic field caused by a magnetic substance entering the vicinity of the elements are detected by the elements; 1. In the magnetic sensor for detecting the presence and movement of the magnetic material, there is provided a container in which the element is housed together with the pellet while being separated from the magnet, and whose side wall functions as a spacer; A thermally insulating part such as a gap is formed between a detection plate made of a non-magnetic material that is provided with an interval between the magnetic material and the element, and the pellet side wall and the container side wall. . A magnetic sensor, wherein the magnetic body is slidably moved on the detection plate from one element to the other element in accordance with the arrangement direction of the elements.