Patent ID: 7117755

Claim:
A torque sensor comprising a torsion bar to coaxially connect an input shaft coupled with a steering wheel and an output shaft coupled with a steering mechanism, at least two detection rings fixedly fitted around the input and output shafts, at least one detection coil assembly having an annular structure to enclose adjacent portions of the detection rings, and a sensor housing to receive the detection coil assembly, further comprising: a first step formed on an inner peripheral surface of the sensor housing; a second step formed on an outer peripheral surface of the detection coil assembly, the first and second steps axially supporting each other; and a groove penetrating the outer peripheral surface of the detection coil assembly at a position adjacent to the second step such that the groove faces an inner surface portion of the first step, so that the first step penetrates the groove while being plastically deformed when the detection coil assembly is pressed toward the first step.