To provide a free wheel hub which achieves excellent workability for attaching a permanent magnet to a fixed yoke and in which the permanent magnet has a stable force for suctioning a movable yoke.SOLUTION: A free wheel hub includes: a slide member 33 which is supported so as to be movable in an axial direction between a lock position and a free position; a movable yoke 51 which moves integrally with the slide member 33 in the axial direction; a fixed yoke 50 which is disposed facing the movable yoke 51 in the axial direction; and an annular permanent magnet 52 attached to a surface of the fixed yoke 50 which faces the movable yoke 51 in the axial direction. The free wheel hub is provided with an annular magnet holder 70 which is integrally fixed to the permanent magnet 52 and made of a non-magnetic material. A snap fit claw 73 is formed at the magnet holder 70.SELECTED DRAWING: Figure 3
【課題】永久磁石を固定ヨークに取り付ける作業性に優れ、永久磁石が可動ヨークを吸引する力が安定したフリーホイールハブを提供する。【解決手段】ロック位置とフリー位置との間で軸方向に移動可能に支持されたスライド部材33と、スライド部材33と軸方向に一体に移動する可動ヨーク51と、可動ヨーク51と軸方向に対向して配置された固定ヨーク50と、固定ヨーク50の可動ヨーク51に対する軸方向対向面に取り付けられた環状の永久磁石52と、を備えるフリーホイールハブにおいて、永久磁石52に一体に固定された非磁性材料からなる環状の磁石ホルダ70を設け、磁石ホルダ70にスナップフィット爪73を形成する。【選択図】図3
FREE WHEEL HUB
フリーホイールハブ
19.12.2019
Patent
Elektronische Ressource
Japanisch
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