To provide a hook that has high effect of preventing a rope from coming off due to a puzzle-ring phenomenon.SOLUTION: The hook according to one embodiment of the invention has a base end part, a tip part, and a hook-shaped part curved in a U-shape from the base end part to the tip part, which comprises: a latch one end of which is supported on the base end part turnably and the other end of which approaches the tip part and opens and closes an opening part of the hook-shaped part; and a lock member arranged between the latch and the base end part. The lock member inhibits turning of the latch in a state where the other end of the latch is in proximity to the tip part. Preferably, the lock member includes a member for releasing the inhibition of the turning. Preferably, the latch has at least a top surface and a pair of side surfaces, and the top surface of the other end of teh latch and the pair of side surfaces of the latch cover the tip part in a state where the other end of the latch is proximity to the tip part. Preferably, the other end of the latch does not protrude from the outside of the tip part.SELECTED DRAWING: Figure 1
【課題】本発明は、知恵の輪現象によるロープの外れを防止する効果が高いフックを提供することを課題とする。【解決手段】本発明の一態様は、基端部と、先端部と、上記基端部から上記先端部にかけてU字型に湾曲する鉤状部とを有するフックであって、一端が上記基端部に回動可能に支持され、他端が上記先端部に近接し、上記鉤状部の開口部を開閉する外れ止めと、上記外れ止め及び上記基端部の間に配設されるロック部材とを備え、上記ロック部材が、上記外れ止めの他端が上記先端部に近接した状態で上記外れ止めの回動を制止する。上記ロック部材が、上記回動の制止を解除する部材を含むとよい。上記外れ止めが少なくとも天面及び一対の側面を有し、上記外れ止めの他端が上記先端部に近接した状態で、上記外れ止めの他端の天面及び一対の側面が上記先端部を覆うとよい。上記外れ止めの他端が、上記先端部の外側より突出しないとよい。【選択図】図1
HOOK
フック
2019-08-29
Patent
Electronic Resource
Japanese
IPC: | B66C Krane , CRANES |