Fan-shaped heat dissipation gear

The fan-shaped heat dissipation gear comprises an outer gear ring and an inner gear ring, the inner gear ring is sleeved with the outer gear ring, the outer gear ring and the inner gear ring are connected through a plurality of connecting plates, a plurality of gear teeth are arrayed on the outer wall of the outer gear ring, and a clamping groove is formed in the inner wall of the inner gear ring. The gear has the advantages that the inner gear ring and the outer gear ring are connected and fixed through the inclined connecting plates, so that the connecting plates are in a fan state, air is blown in the axial direction of the gear, flowing of the driven air is greatly improved, the surface area of the gear is increased through the connecting plates, heat dissipation of the gear is accelerated, and the service life of the gear is prolonged. The threaded section is arranged on the inner wall of the inner gear ring, the situation that the coinciding face of the rotating shaft and the gear rusts and is hard to s