To easily release the rotation disabled state of a drive shaft caused by an erroneous operation.SOLUTION: A rotation lock device comprises: a stopper support member 130 that supports a stopper member 140 and rotates integrally with a shaft-like member; a guide groove 154 that includes a first groove and a second groove positioned outside the first groove in the radial direction of the shaft-like member; a holding plate 150 that is rotatable with respect to the stopper support member 130; biasing means 186 for biasing the holding plate 150 with respect to the stopper support member 130 in one direction and inserting and holding a projection 141 of the stopper member 140 in one of the first and second grooves; stopper locking means 110 having a lock wall with which the stopper member 140 collides due to movement of the projection 141 to the second groove when the shaft-like member rotates at a speed exceeding a prescribed speed in one direction; and releasing means for pushing-in the stopper member 140 and moving the projection 141 to the first groove to release a rotation stop of the shaft-like member in one direction.SELECTED DRAWING: Figure 5
【課題】誤操作により駆動軸の回転不能となった状態を容易に解除する。【解決手段】ストッパ部材140を支持して軸状部材とともに回転するストッパ支持部材130と、第1溝部及び軸状部材の径方向において第1溝部よりも外方に位置する第2溝部を含むガイド溝154を備え、ストッパ支持部材130に対して回転可能な保持プレート150と、保持プレート150をストッパ支持部材130に対して一方向に付勢してストッパ部材140の突起141を第1溝部又は第2溝部のいずれかに挿入した状態で保持する付勢手段186と、所定の加速度を超えて軸状部材が一方向に回転したときに突起141が第2溝部へと移動することでストッパ部材140が衝突する係止壁を有するストッパ係止手段110と、ストッパ部材140を押し込み突起141を第1溝部へと移動させ、軸状部材の一方向への回転停止を解除する解除手段とを有する。【選択図】図5
ROTATION LOCK DEVICE AND HOIST
回転ロック装置及び巻上機
2023-04-10
Patent
Electronic Resource
Japanese
IPC: | B66D Haspeln , CAPSTANS |