POWER GENERATION SWITCH
This power generation switch (100) is provided with: parallel beams (11a, 11b) that include at least one magnetostrictive rod that is a magnetostrictive material formed into a beam shape
coils (12a, 12b) wound around the magnetostrictive rod
a first joining member (10a) that, at the first end of the parallel beams, is a member that joins two beams that configure the parallel beams
a second joining member (10b) that, at the second end, is a member that joins the two beams that configure the parallel beams
field magnet units (14a, 14b) that cause the generation of magnetic flux penetrating each of the two beams in the same orientation
and an operation member (50) that a user operates. The first joining member forms an affixed end that is not displaced, and the second joining member forms a free end that can oscillate freely. The operation member applies external force to the second joining member in a manner so that a free oscillation wherein positive axial force arises at one of the two beams and negative axial force arises at the other of the two beams arises at the parallel beams.