A load detector includes: a strain generating body that includes a first fixing part fixable to a device, a second fixing part fixable to an actuator, and a strain part provided between the first and second fixing parts, a pressing operation being performed on the device by an operator, the actuator giving vibration to the device; a strain sensor that detects strain generated in the strain part in accordance with the pressing operation; and a regulating part provided at the first fixing part. When the device moves in a first direction separating from the actuator, the regulating part regulates the movement by engaging with an engaged part of the actuator.