JPH02107021U

JPH02107021U -

Info

Publication number: JPH02107021U
Application number: JP1648089U
Authority: JP
Priority date: 1989-02-15
Filing date: 1989-02-15
Publication date: 1990-08-24

Description

[Brief explanation of the drawing]

第１図は本考案の実施例に係わる回転センサを
示す断面図、第２図は第１図の回転センサの―
線に相当する部分の断面図、第３図は第１図の
磁気回路形成体を示す斜視図、第４図、第５図、
第６図及び第７図は４つの変形例の磁気回路形成
体とコイルとをそれぞれ示す側面図、第８図は変
形例の磁気回路形成体と歯車とを示す一部切欠側
面図、第９図、第１０図及び第１１図は３つの変
形例の磁気回路形成体をそれぞれ示す側面図、第
１２図は変形例の歯車と磁気回路形成体の関係を
示す側面図、第１３図は第１２図の左側面図、第
１４図、第１５図、第１６図及び第１７図は４つ
の変形例の歯車と磁気回路形成体との関係をそれ
ぞれ示す図である。１…回転センサ、２…コア、２ａ，２ｂ…脚、
３…磁石、４…磁気回路形成体、５…検出コイル
、８…容器。 FIG. 1 is a sectional view showing a rotation sensor according to an embodiment of the present invention, and FIG. 2 is a cross-sectional view of the rotation sensor of FIG. 1.
A sectional view of a portion corresponding to the line, FIG. 3 is a perspective view showing the magnetic circuit forming body of FIG. 1, FIGS. 4 and 5,
6 and 7 are side views showing four modified magnetic circuit forming bodies and coils, respectively, FIG. 8 is a partially cutaway side view showing a magnetic circuit forming body and gears of a modified example, and FIG. 10 and 11 are side views showing three modified examples of the magnetic circuit forming body, FIG. 12 is a side view showing the relationship between the gear and the magnetic circuit forming body of the modified example, and FIG. 13 is a side view showing the relationship between the gear and the magnetic circuit forming body of the modified example. The left side view of FIG. 12, FIG. 14, FIG. 15, FIG. 16, and FIG. 17 are views showing the relationship between the gear and the magnetic circuit forming body in four modified examples, respectively. 1... Rotation sensor, 2... Core, 2a, 2b... Legs,
3... Magnet, 4... Magnetic circuit forming body, 5... Detection coil, 8... Container.

Claims

[Claims for Utility Model Registration] A moving state detector for detecting the moving state of a moving object based on changes in magnetic resistance of a magnetic circuit, comprising a core made of a magnetic material and the core serving as a path for magnetic flux. a permanent magnet coupled to the core, and a magnetic circuit forming body having a U-shaped portion;
It consists of a coil provided to respond to the magnetic flux of the core, and a container accommodating the magnetic circuit forming body and the coil, the container being formed in a cup shape, and at least a bottom portion of the container is formed of a non-magnetic material, and the magnetic circuit-forming body is housed in the container such that both tip portions of the U-shaped magnetic circuit-forming body face a bottom portion of the non-magnetic material. A moving state detector featuring: