Enhanced safety hook

Abstract

An enhanced safety hook includes a hook body, a latch member, an operation handle and a spring member. The hook body includes a hook hole having a hook opening, a hook end formed at a top end thereof, a pin slot at a position below the hook opening, and a guide slot. The latch member includes a main plate and two side plates define an upside-down U-shape frame, a peripheral edge bridged between the two side plates in such a manner that a top end of the latch member constructs a mouth for receiving the hook end, a guide arm connected to the two side frames to couple with the guide slot, and a pin element coupling with the pin slot. The pin element is movably provided in the pin slot in such a manner that the mouth of the latch member is capable of detaching from the hook end, so that the latch member unlocks the hook opening by means of rotation of the pin element in the pin slot, while the guide arm slides in the guide slot for preventing the latch member from having contact with the inner wall of the hook body along the hook hole. The operation handle has a rotation hole for the pin element to pass through so as to enable the pin element to move in the pin slot. The spring member retains the latch member in a position that the latch member tends to lock the hook hole.