Torque detection device
US6263992A · kind A · utility
Inventor
Key dates
| Filing date | Aug 17, 1999 |
| Grant date | Jul 24, 2001 |
| Priority date | — |
| Expiry date | Aug 17, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01L3/1457
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A torque detection device for detecting a torque applied to a bicycle for controlling power output of a motor applied to the bicycle in helping moving the bicycle is disclosed. The torque detection device includes a shaft coupled to a driving chain wheel and pedals of the bicycle. A circuit including strain gauge based elements is embedded in the shaft for converting a torsional deformation caused by the torque applied to the shaft by a rider via the pedals into an electrical signal. The electrical signal, after being properly processed, is applied to a motor power controller which in turns controls the power output of the motor whereby the torque from the motor is determined based on the torque applied by the rider to the bicycle. Thus, as the rider applies a great torque to the pedals, the motor correspondingly supplies a large output of power to the bicycle for helping moving the bicycle. No additional manual control of the motor is needed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.