Patent ID: 8015885
Filing Date: 2011-09-13
Classification: B62D,G01L

Abstract:
1. A torque detector for detecting torque through detection of a magnetic flux variation that occurs in a pair of soft magnetic bodies arranged within the magnetic field of a permanent magnet, the torque detector comprising: first and second units; a pair of fixing screws that fasten the first and second units to an object in which the units are installed, wherein the first unit includes a pair of magnetic flux collector rings coupled magnetically to the respective pair of soft magnetic bodies and a first synthetic resin formed by molding the pair of magnetic flux collector rings, the second unit includes a magnetic shield plate containing metal, a second synthetic resin fixed to the magnetic shield plate, an insertion protruding part arranged on a portion of the second synthetic resin in such a manner as to protrude from the magnetic shield plate, and a magnetic sensor held within the insertion protruding part, the first synthetic resin includes a receiving plate on which a base for receiving the magnetic shield plate is formed, and the pair of magnetic flux collector rings include at least one pair of magnetic flux collector bosses arranged in such a manner as to face each other, the magnetic sensor held within the insertion protruding part is disposed in an insertion recessed portion formed between the magnetic flux collector bosses, the pair of fixing screws are spaced from each other, the insertion protruding part is arranged between the pair of fixing screws, and wherein in a state where the receiving plate exists between the magnetic shield plate and the object in which the units are installed, the magnetic shield plate and the receiving plate are fastened together to the object in which the units are installed using the pair of fixing screws.