JPH027584U

JPH027584U -

Info

Publication number: JPH027584U
Application number: JP1988085994U
Authority: JP
Priority date: 1988-06-29
Filing date: 1988-06-29
Publication date: 1990-01-18
Anticipated expiration: 2003-06-29
Also published as: JPH0725729Y2

Description

[Brief explanation of the drawing]

第１図ないし第３図は本考案の第１の実施例に
係り、第１図は本実施例による磁気センサの外観
斜視図、第２図は第１図中の―矢示方向横断
面図、第３図はセンサケースとヘツドカバーの横
断面形状を示す分解横断面図、第４図、第５図は
本考案の第２の実施例に係り、第４図は本実施例
による磁気センサを示す横断面図、第５図はセン
サケースとヘツドカバーを示す分解斜視図、第６
図は第３の実施例によるセンサケースとヘツドカ
バーを示す分解斜視図、第７図ないし第１１図は
従来技術に係り、第７図は従来技術による磁気セ
ンサを示す外観斜視図、第８図はヘツドカバーを
外した状態を示す第７図の平面図、第９図は検知
ユニツトの外観斜視図、第１０図は第７図中の
―矢示方向横断面図、第１１図は第７図中の
―矢示方向断面図である。２……検知ユニツト、３……ステム、４……永
久磁石、５……磁気抵抗素子、６……端子ピン、
７……サイドスペーサ、１１，３１……センサケ
ース、１１Ａ，３１Ａ……ユニツト嵌着穴、１１
Ｃ，３１Ｃ……カバー挿着溝、１２，３２……ヘ
ツドカバー、１２Ａ，３２Ａ……平面部、１２Ｃ
，３２Ｂ，３２Ｃ……カバー固定脚部。 1 to 3 relate to a first embodiment of the present invention, FIG. 1 is an external perspective view of a magnetic sensor according to this embodiment, and FIG. 2 is a cross-sectional view in the direction indicated by the arrow in FIG. 1. , Fig. 3 is an exploded cross-sectional view showing the cross-sectional shapes of the sensor case and head cover, Figs. 4 and 5 relate to the second embodiment of the present invention, and Fig. 4 shows the magnetic sensor according to the present embodiment. Fig. 5 is an exploded perspective view showing the sensor case and head cover; Fig. 6 is an exploded perspective view showing the sensor case and head cover;
The figure is an exploded perspective view showing a sensor case and head cover according to the third embodiment, FIGS. 7 to 11 are related to the prior art, FIG. 7 is an external perspective view showing a magnetic sensor according to the prior art, and FIG. Fig. 7 is a plan view showing the head cover removed, Fig. 9 is an external perspective view of the detection unit, Fig. 10 is a cross-sectional view in the direction of the - arrow in Fig. 7, and Fig. 11 is a cross-sectional view in the direction of the - arrow in Fig. 7. FIG. 2...Detection unit, 3...Stem, 4...Permanent magnet, 5...Magnetic resistance element, 6...Terminal pin,
7... Side spacer, 11, 31... Sensor case, 11A, 31A... Unit fitting hole, 11
C, 31C... Cover insertion groove, 12, 32... Head cover, 12A, 32A... Flat part, 12C
, 32B, 32C...Cover fixing leg.

Claims

[Scope of utility model registration request]

It has a non-magnetic sensor case having one or more unit fitting holes, and a magnetoelectric transducer which is provided in the unit fitting hole of the sensor case and is magnetically biased by a permanent magnet on the side through which the detected object passes. A magnetic sensor comprising a detection unit and a head cover made of a non-magnetic material provided in the sensor case to close the unit fitting hole on the side of the sensor case through which the object to be detected passes. At least a pair of cover insertion grooves are provided on the passage surface side with the unit fitting hole in between, and the head cover is provided with at least a pair of cover fixing legs that are respectively inserted into the respective cover insertion grooves. Features magnetic sensor.