Torque detecting apparatus

DETAILED DESCRIPTION The present invention has been achieved to fully solve the above problems by way of providing a novel torque detecting apparatus capable of correctly detecting actual torque with a simple structure and high precision.
In order to solve the above problems, the present invention according to claim 1 comprises the following: displacement detecting means for generating torque modulated signal which is modulated by torque signal corresponding to variation of relative position between a rotary body disposed on the part of drive source being variable in correspondence with torque and another rotary body disposed on the output side; and signal transmitting means for transmitting torque modulated signal from the drive-source-side rotary body to a stationary member or from the output-side rotary body to a stationary member under non-contact condition.
According to the structure according to claim 1, a novel torque detecting apparatus comprises a displacement detecting means for generating torque-modulated signal which is modulated by torque signal corresponding to variation of relative position between a rotary body disposed on the part of drive source being variable in correspondence with torque and another rotary body disposed on the output side and a signal transmitting means for transmitting torque-modulated signal from the drive-source-side rotary body to a stationary member or from the output-side rotary body to a stationary member under non-contact condition.
Because of the above arrangement, it is possible for the stationary side to detect torque by way of demodulating the torque-modulated signal under non-contact condition, whereby enabling prevention of precision from incurring degradation otherwise caused by the wear of the components to eventually make it possible to correctly detect actual torque with high precision with a simple structure.