Patent ID: 11898922
Assignee: KABUSHIKI KAISHA YASKAWA DENKI
Field: Measurement (Instruments)
Classification: CPC G  B | IPC B  G

Claim 0:
1. A torque sensor comprising:
a strain body; and
an optical sensor configured to detect a deformation of the strain body,
wherein the strain body includes
an outer peripheral body having a ring shape, and
an inner peripheral body of which at least a part is disposed inside the outer peripheral body in a radial direction, and

the optical sensor includes
a scale fixed to one of the outer peripheral body and the inner peripheral body, and disposed between the outer peripheral body and the inner peripheral body, and
a detector fixed to a remaining one of the outer peripheral body and the inner peripheral body, and disposed to face the scale between the outer peripheral body and the inner peripheral body, and
wherein a substrate of the torque sensor is disposed in a space formed between the outer peripheral body and the inner peripheral body, and is provided with the detector.