Torque sensor

A torque sensor comprising,

• first and second shafts which are connected with each other through a torsion bar;
• a first cylinder made of magnetic material which is fixed to said first shaft and provided at the axial end edge at a side of said second shaft with a large number of cutouts so as to form teeth being smaller in width than said cutouts and disposed circumferentially of said cylinder;
• a second cylinder made of magnetic material, which is opposite to said first cylinder, forms at the opposite axial end edge teeth of the same as those at said first cylinder, and is fixed to said second shaft so that each tooth is opposite at a portion of about half a width to that of about half a width at said first cylinder;
• and
• a shaft regulation means for regulating said first and second shaft in a rotation range not including the state where said teeth of said first and second cylinders are completely opposite or not-opposite to each other.