Patent ID: 8587137
Filing Date: 2013-11-19
Classification: A01K,H01L,H02K,H02N

Abstract:
1. An electricity generation device for generating electricity using an animal as a source of power comprising: a mechano-electric conversion mechanism that converts into electric energy a displacement of a body part of an animal when the animal spontaneously moves, an accumulation unit that accumulates the electric energy converted by said mechano-electric conversion mechanism, a ring-shaped main body whose diameter changes as an end of the ring-shaped main body moves due to the displacement and which includes a rack formed on an outer surface of the ring-shaped main body, and a gear that rotates as the rack moves due to a change in the diameter of said main body, wherein said mechano-electric conversion mechanism includes a piezoelectric element to be deformed directly or indirectly by the displacement, and wherein said piezoelectric element is formed into a cantilever, and said gear intermittently bends a movable end of said piezoelectric element in accordance with the rotation.