<p>The present invention provides a torque detector for an electric bicycle that is lightweight, inexpensive, and easy to assemble; and is configured without using specialized or heavy components. A bearing (26) and another bearing constituting a laterally disposed pair for rotatably supporting a crankshaft (7a) are disposed inside a hanger part (20) fixed to a frame. A sensor support member (23) having an elastically deforming part (23a) is disposed between the hanger part (20) and the bearing (26), which is disposed on a side where a transverse drive sprocket (13) is attached. An elastically deformable strain-detecting sensor (24) is attached to the elastically deforming part (23a), which abuts the bearing (26) from the rear.</p>
