Torque detector and method of manufacturing housing of torque detector

A method of manufacturing a housing of a torque detector which includes a sensor holding hole for holding a sensor part detecting a rotating torque exerted on the rotating shaft, a board chamber for accommodating a circuit board outputting a signal corresponding to the detected rotating torque, a partition wall between the sensor holding hole and the board chamber, and a lead hole passing through the partition wall, into which a lead connecting the sensor part to the circuit board is inserted, the method comprising the steps of:

• providing a sheet material as a material of the housing, a female mold for forming an outer surface shape of the housing and a male mold for forming an inner surface shape of the housing;
• arranging the sheet material between the female and male molds;
• and
• pushing the male mold into the female mold so as to forming the sheet material into the housing so that the sensor holding hole, the board chamber and the lead hole respectively extend in the pushing direction and communicate with each other.