Hook device

A hook device comprising a hook body having an inverted U-shaped inner peripheral surface formed by an upper wall, a front wall and a rear wall and fittable to a member to be connected, a stopper disposed in a stopper space formed in the hook body and having a retaining portion projectable beyond a lower end of the rear wall of the hook body toward a lower end of the front wall for preventing the hook body from slipping off the member by engagement therewith, the stopper being movable from a slipping-off preventing position to a slipping-off permitting position in which the retaining portion is positioned away from the lower end of the front wall to permit the hook body to slip off the member, an elastic member for biasing the stopper toward the slipping-off preventing position, and a connecting pin extending between and attached to opposite side walls of the hook body defining the stopper space for connecting together the hook body, the stopper and the elastic member, the hook device being characterized in that the stopper is formed with a slot having an intermediate portion of the connecting pin inserted therethrough, the slot comprising a stopper guide portion for permitting the stopper to move between the slipping-off preventing position and the slipping-off permitting position, and a stopper lock portion extending from the stopper guide portion and allowing the connecting pin to engage in when the stopper is moved from the slipping-off permitting position further toward a direction opposite to the slipping-off preventing position.