Torque sensor and torque detection device
US11774304B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 24, 2021 |
| Grant date | Oct 3, 2023 |
| Priority date | — |
| Expiry date | Jan 19, 2042 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01L3/102
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A torque sensor to detect torque transmitted by a shaft having magnetostrictive properties is provided with a pair of cylindrical detection units arranged around the shaft and aligned side-by-side in an axial direction of the shaft, and first and second connection lines connecting the pair of detection units. Each detection unit includes first to fourth detection coils stacked in a radial direction. A series circuit formed by series connecting the first and fourth detection coils is parallel connected to a series circuit formed by series connecting the second and third detection coils. The first and second connection lines are configured to connect between corresponding connecting portions of the first and fourth detection coils and between corresponding connecting portions of the second and third detections coils, respectively. The torque transmitted by the shaft is detected based on a potential difference between the first connection line and the second connection line.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.