| 摘要 |
PROBLEM TO BE SOLVED: To provide an in-tire power generation device which can be installed on a rear face of a tread part of a tire, is downsized and increases a power generation amount.SOLUTION: An in-tire power generation device 10 comprises: a magnetostrictive rod 1 that is formed from a magnetostrictive material; a coil 2 that is wound around the magnetostrictive rod 1; and a weight part 3 that becomes a weight. The in-tire power generation device also comprises: a first coupling part 4a which extends from one end of the magnetostrictive rod 1 and is coupled with the weight part 3; and a second coupling part 4b which extends from the other end of the magnetostrictive rod 1. A magnetic force generation part 5 is provided in the weight part 3 or the second coupling part 4b, the weight part 3 and the second coupling part 4b are disposed with a clearance 6 interposed therebetween, and the clearance 6 forms a part of a magnetic circuit.SELECTED DRAWING: Figure 1 |
