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US 12,625,018 B2Granted
Load sensor
AssigneeProterial, Ltd.
InventorYuta Sugiyama
Life of this patent
Estimating the term…
Abstract
A load sensor is provided with a pressure-receiving core made of a magnetostrictive material on which a load to be detected acts, a non-pressure-receiving core made of a magnetic material concentrically arranged with the pressure-receiving core and on which the load to be detected does not act, a detection coil that generates a magnetic flux that passes through the pressure-receiving core by energizing, and a reference coil that, when energized, generates a magnetic flux that does not pass through the pressure-receiving core but passes through the non-pressure-receiving core.
Claims7
A load sensor, comprising:
- a pressure-receiving core made of a magnetostrictive material on which a load to be detected acts;
- a non-pressure-receiving core made of a magnetic material concentrically arranged with the pressure-receiving core and on which the load to be detected does not act;
- a detection coil that generates a magnetic flux that passes through the pressure-receiving core by energizing;
- and
- a reference coil that, when energized, generates a magnetic flux that does not pass through the pressure-receiving core but passes through the non-pressure-receiving core,
- wherein at least one of the pressure-receiving core and the non-pressure-receiving core is located between adjacent coils in a radial direction of a plurality of coils constituting the detection coil and the reference coil and has a yoke formed with both magnetic fluxes generated by energizing the adjacent coils respectively.
3 more elements
Dependencies are inferred from the claim text.