To provide a small load control mechanism which requires no wire connection and is easily assembled.

A piezoelectric body of a load control mechanism comprises: an electrode plate 403 having a first side electrode and a second side electrode printed in a non-conductive state with each other, and a first surface electrode 403a being conductive with the first side electrode and a second surface electrode 403b being conductive with the second side electrode printed on the surface thereof in a non-conductive state with each other; a first plate-like piezoelectric body 401 having a third side electrode 401b and a fourth side electrode 401a printed, and a third surface electrode 401c being conductive with the third side electrode 401b printed on the surface thereof; and a second plate-like piezoelectric body 402 having a fifth side electrode 402b and a sixth side electrode 402a printed, and a fourth surface electrode 402c being conductive with the sixth side electrode 402a printed on the surface thereof. The surface electrodes of each member do not contact with each other, and the odd-numbered side electrodes are electrically connected to each other and the even-numbered side electrodes are electrically connected to each other.