| 摘要 |
<p>[Problem] To impart momentum to the rotary shaft of a device which is rotationally driven by the transmission of driving force from a drive source via the rotary shaft, and thus to augment that rotation and improve the usefulness. [Solution] A rotation assistance mechanism is equipped with: an attraction unit 110 having a pair of magnetic members 112, 112 for which the opposite poles of the members are arranged facing one another; a magnetic member driving unit 120 that changes the distance between the pair of magnetic members 112, 112 with a predetermined period by means of the rotation of a rear wheel 13; a shield unit 130 having a pair of magnetic surfaces 133, 133 the poles of which are the same as the respective opposing surfaces 112a, 112a of the pair of magnetic members 112, 112; and a shield drive unit 140 that, in conjunction with the predetermined period, propels the shield unit 130 into the interval between the pair of magnetic members 112, 112 when the distance between the pair of magnetic members 112, 112 is reduced, and retracts the shield unit 130 from the interval between the pair of magnetic members 112, 112 when the distance between the pair of magnetic members 112, 112 is increased.</p> |
