Fastening bolt for automobile hub

Abstract

The utility model relates to the technical field of fasteners, in particular to a fastening bolt for an automobile hub, which comprises a screw and a hemisphere connected to one end of the screw, the plane of the hemisphere is connected with a hexagonal cylinder, the outer surface of the hexagonal cylinder is sleeved with a hexagonal frame, the axis of the hexagonal cylinder and the axis of the hemisphere are respectively provided with a circular hole, and the hexagonal cylinder is provided with a circular hole. A blind hole concentric with the round hole and communicated with the round hole is formed in the axis of the screw rod, a plurality of oil through holes communicated with the blind hole are formed in the screw rod, a lubricating oil bag is arranged in an inner cavity of the blind hole, a piston head is further connected to the inner cavity of the blind hole in a sliding mode, and two elastic pricking needle assemblies are further symmetrically arranged on the piston head in a penetrating mode. The hexagonal bolt is reasonable in structure, the hexagonal frame body is connected to the outer surface of the hexagonal column body in a sleeving mode, the probability that the hexagonal column body is damaged when the bolt is disassembled through a wrench with large force is reduced, after the lubricating oil bag is punctured, lubricating oil flows into the thread gap of the screw through the oil through hole, the difficulty of disassembling the bolt through the wrench is reduced, and the using effect is enhanced.

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