Torque detection sensor
AssigneeShinano Kenshi Co., Ltd.
InventorAkihide FURUKAWA
Life of this patent
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Abstract
A torque detection sensor includes first teeth and second teeth provided to protrude in staggered arrangement in an annular core and plural energizing circuits in which first coils and second coils wound around the first teeth and the second teeth are connected in series, in which plural magnetic paths having inclinations of ±45 degrees with respect to an axial center direction are respectively formed through an object to be detected between the first teeth and the second teeth by energization to the plural energizing circuits.
Claims4
A torque detection sensor of a self-excitation type that measures variation of magnetic permeability by variation of coil impedance in magnetic circuits formed between a core and an object to be detected by energizing coils wound around teeth provided to protrude from the annular core provided around the object to be detected at plural places, the sensor comprising:
- first teeth and second teeth provided to protrude in staggered arrangement in the annular core in a circumferential direction;
- and
- a plurality of energizing circuits in which first coils and second coils with different winding directions wound around the first teeth and the second teeth are connected in series,
- wherein a plurality of magnetic paths having an inclination of +45 degrees and a plurality of magnetic paths having an inclination of −45 degrees with respect to an axial center direction are respectively formed through the object to be detected between the first teeth and the second teeth by energization to the plural energizing circuits.
Dependencies are inferred from the claim text.