To provide a power generation apparatus configured while being thinned, the power generation apparatus being used for various electronic devices or operation devices or operation portions for remotely operating the electronic devices.
A yoke part 31 including an induction coil 33 in the outer circumference thereof and a magnet member 40 are disposed side by side. Both the yoke part 31 and the magnet member 40 are made closer or separated relatively by sliding the yoke part 31 or the magnet member 40. Magnetic flux transfer parts 48, 50 are added for transferring a magnetic flux of the separated magnet member 40 to the yoke part 31 so as to generate, with respect to the flow of a magnetic flux in a first direction generated in the yoke part 31 by a magnetic flux generated by the magnet member 40 when both the yoke part and the magnet member are made closer, the flow of a magnetic flux in a second direction reverse to the first direction in the yoke part 31 when both the yoke part and the magnet member are made separated. The direction of the magnetic flux flowing to the yoke part 31 is switched by sliding and an electromotive force of the induction coil 33 generated in response to switching can be taken out.
MATSUMOTO MASAAKI
Daisuke Nagano
Kentaro Fujii