Inverted-V-shaped face gear and inverted-V-shaped gear pair comprising same

The invention discloses an inverted-V-shaped face gear and an inverted-V-shaped gear pair comprising same. The inverted-V-shaped face gear is suitable for being engaged with an inverted-V-shaped cylindrical gear, and comprises a body and a plurality of gear teeth, wherein the plurality of gear teeth are arranged on the end surface of the body and are arranged in the form of a ring; each gear tooth comprises an inside gear tooth and an outside gear tooth; and each inside gear tooth and each outside gear tooth respectively extend towards a direction in which each inside gear tooth and each outside gear tooth are far away from each other. According to the inverted-V-shaped face gear of the embodiment of the invention, capacity of transmitting load of the face gear can be improved, axial load born by the cylindrical gear in the face gear pair is remarkably reduced, the overlap ratio of the face gear is improved, and vibrations and noises of the face gear pair are reduced.