JPH0289338U

JPH0289338U -

Info

Publication number: JPH0289338U
Application number: JP1988169336U
Authority: JP
Priority date: 1988-12-27
Filing date: 1988-12-27
Publication date: 1990-07-16

Description

[Brief explanation of the drawing]

第１図は本考案に係るトルクセンサの一実施例
の縦断面図、第２図はその要部の拡大断面図、第
３図はその別例の要部の拡大断面図、第４図は従
前のトルクセンサによる温度変化とセンサ出力と
の関係を示したグラフ、第５図は本考案のトルク
センサによる温度変化とセンサ出力との関係を示
したグラフ、第６図は本出願人が先に出願したト
ルクセンサの縦断面図、第７図はその電磁結合検
出コイルを巻回した２つの筒体と円筒とを示す部
分断面正面図、第８図はその筒体部を示した拡大
断面図、第９図はその温度変化による熱膨張した
状態の拡大断面図である。１１Ａ……上部軸、１１Ｂ……トーシヨンバー
、１１Ｃ……下部軸、１４，１６，１７，１８…
…円筒、１９Ａ，１９Ｂ……筒体、１９ａ，１９
ｂ……周設溝、１９ｄ……外側壁部、１９ｅ……
本体部、１９ｆ，１９ｇ，１９ｊ，１９ｋ……圧
入面、１９ｌ……一側部、１９ｍ……他側部。 Fig. 1 is a longitudinal sectional view of one embodiment of the torque sensor according to the present invention, Fig. 2 is an enlarged sectional view of its main parts, Fig. 3 is an enlarged sectional view of the main parts of another example thereof, and Fig. 4 is FIG. 5 is a graph showing the relationship between temperature change and sensor output using a conventional torque sensor. FIG. 5 is a graph showing the relationship between temperature change and sensor output using the torque sensor of the present invention. FIG. Fig. 7 is a partial cross-sectional front view showing the two cylinders around which the electromagnetic coupling detection coil is wound and the cylinder, and Fig. 8 is an enlarged cross-section showing the cylinder body. 9 are enlarged cross-sectional views of the thermally expanded state due to temperature changes. 11A... Upper shaft, 11B... Torsion bar, 11C... Lower shaft, 14, 16, 17, 18...
...Cylinder, 19A, 19B...Cylinder, 19a, 19
b... Circumferential groove, 19d... Outer wall portion, 19e...
Main body, 19f, 19g, 19j, 19k...press-fit surface, 19l...one side part, 19m...other side part.

Claims

[Claims for Utility Model Registration] A plurality of cylinders made of a magnetic material and attached to two shafts connected via a torsion bar;
An electromagnetic coupling detection coil made of a magnetic material is arranged between the outer circumferential side of the cylinder and the cylindrical case, and is wound around a circumferential groove formed on the inner circumferential side to electromagnetically couple with each of the plurality of cylinders. A torque sensor comprising two cylindrical bodies, characterized in that the cylindrical body is divided into two parts, and each divided part is provided with a press-fitting surface that faces each other in the radial direction.