Patent ID: 8677836

Claim:
A torque sensor comprising: a first driving unit including a driving rod, a driving body connected fixedly to said driving rod, and at least one driving block extending from said driving body in a direction away from said driving rod, said driving block being rotatable along a rotating path and having two opposite pushing surfaces disposed along the rotating path; a second driving unit including a driven body spaced apart from and connected to said driving body and permitting said driving body to rotate relative thereto as a result of application of a torque to said driving rod, a driven rod extending from said driven body in a direction away from said first driving unit, and a block-receiving groove formed in said driven body and permitting said driving block to rotate within said block-receiving groove along the rotating path; a measuring unit including a first measuring module connected to said driving block, and a second measuring module connected to said driven body and cooperating with said first measuring module so as to measure the torque; and a resilient unit including a pair of resilient members flanking said driving block and disposed along the rotating path, each of said resilient members being disposed between and abutting against a corresponding one of said pushing surfaces and said driven body such that, upon application of the torque, said driving block rotates within said block-receiving groove toward one of said resilient members, so that the one of said resilient members is compressed a distance that is proportional to the torque.