JPS63200737U - - Google Patents

Description

[Brief explanation of the drawing]

Fig. 1 is a partially cross-sectional schematic diagram showing an embodiment of this invention, Fig. 2 is a sectional view taken along the - line in Fig. 1, and Fig. 3 is a block diagram showing the measuring section of Fig. 1. Fig. 4 is an explanatory diagram showing the path of the magnetic flux in the radial direction in this embodiment, and Fig. 5 shows the torque on the first and second torque detection surfaces when viewed from the opposite direction. FIG. 6, which is an explanatory diagram for explaining the accompanying deformation operation, is a graph showing the relationship between torque and output voltage in this embodiment. In the figure, 2 is an input gear as a rotating body, 4A is a magnetostrictive torque sensor, 22A, 22B are first and second coils, and 24A, 24B are first and second torque detection surfaces. Torque detection surface,
a, a, b, b are grooves serving as magnetic flux direction defining means.

Claims (1)

[Claims for Utility Model Registration] A magnetostrictive torque sensor capable of non-contact detection of a signal corresponding to the value and direction of torque acting on a rotating body using a magnetostrictive effect, wherein the rotating body is A structure having a flat side surface perpendicular to the rotation axis on either side in the direction of the rotation axis, and a magnetostrictive effect is applied to the surface of a predetermined annular area centered on the rotation axis on the side surface. a torque detection surface on which a plurality of magnetic flux direction defining means are formed, each having a predetermined inclination angle with respect to a radial direction centered on the rotation axis; 1. A magnetostrictive torque sensor characterized by comprising coils that can each form a magnetic circuit with the torque detection surface.