PROBLEM TO BE SOLVED: To maintain an accurate rotation state in a dynamo which is formed annular and mounted on a hub shaft of a bicycle.SOLUTION: The dynamo is configured to generate power by rotating an annular rear-face exterior plate 3 to which a magnet 20 is fixed, relatively to an annular front-face exterior plate 1 on which a coil unit 2 fixed to the hub shaft is mounted. The rear-face exterior plate 3 includes an engage member 12 that is engaged to a wheel of the bicycle or a cushion material 11 that is abutted to a side surface. Between the front-face exterior plate 1 and the rear-face exterior plate 3, a bearing 8 is mounted in an inner circumferential par. An inner flange 14 of a cylindrical member 13 that is fixed to the inner circumferential part of the rear-face exterior plate 3 is engaged to a rear-face outer circumferential end of the bearing 8. Therefore, even if a force in an axial direction acts on the rear-face exterior plate 3, the rear-face exterior plate 3 is prevented from being moved in the axial direction, and the dynamo is smoothly rotated, thereby maintaining a satisfactory power generation state.SELECTED DRAWING: Figure 1
【課題】円環状であって自転車のハブ軸に装着するダイナモにおいて、正確な回転状況を維持する。【解決手段】ハブ軸に固定するコイルユニット2を装着した円環状の表面外装板1に対し、磁石20を固定した円環状の裏面外装板3を回転させて発電を行うものであり、裏面外装板3に自転車の車輪に係合する係合部材12や側面に当接させるクッション材11を設ける。表面外装板1と裏面外装板3は内周部においてベアリング8を装着している。裏面外装板3の内周部に固定した筒状部材13の内鍔14を、ベアリング8の裏面外周端部に係合させることによって、裏面外装板3に軸方向の力が作用することがあっても、裏面外装板3の軸方向移動を防止し、円滑に回転し良好な発電状態を維持する。【選択図】 図1
DYNAMO
ダイナモ
2016-10-06
Patent
Elektronische Ressource
Japanisch