| 摘要 |
PROBLEM TO BE SOLVED: To enable a vibration power generator used in a state where it is mounted to a tire to generate electric power irrespective of that a rotation speed of the tire is low or high, and to enable the vibration power generator to be easily mounted to the tire.SOLUTION: Sub springs 14, which are brought into contact with a movable-side unit 40 when the movable-side unit 40 is displaced from a vibration neutral position radially outward by a specified quantity and are compression-elastically deformed when the movable-side unit 40 is further displaced radially outward, are arranged in a fixed-side unit 20. Thus, when a rotation speed of a tire 2 is low, the movable-side unit 40 is vibrated against an elastic force of main springs 12 to generate power, and on the other hand, when the rotation speed of the tire 2 increases and the movable-side unit 40 is largely displaced radially outward by a centrifugal force, the movable-side unit 40 is vibrated by the centrifugal force and elastic force of the sub springs 14 to generate power. This power generation is achieved while a vibration power generator 10 is downsized, and mounting of the vibration power generator 10 to the tire 2 having a limited mounting space is facilitated. |
