Patent ID: 9512915
Filing Date: 2016-12-06
CPC Classification: F16H

Claim Text:
1. A transmission device, comprising: a case comprising a side wall, an inner wall and a bottom wall; an oil reservoir formed in a bottom portion of the case; and an oil injection port formed in a portion of the side wall located above the oil reservoir, wherein the oil injection port is configured to accommodate an oil injection gun, the oil injection gun is capable of injecting oil into the oil reservoir, the oil reservoir is defined by the inner wall and the bottom wall of the case, the inner wall faces a tip end of the oil injection gun when the oil injection gun is inserted into the oil injection port, the inner wall is integrally formed with an inclined surface, the inclined surface is inclined to become lower as it extends away from the oil injection port, such that the oil to be discharged by the oil injection gun is guided by the inclined surface toward a bottom portion of the oil reservoir, the inclined surface is formed so as to protrude from the inner wall and an upper portion of the inclined surface is connected to the side wall at a position upward of the oil injection port, a protruding portion is formed in the side wall below the oil injection port so as to protrude in a direction along which the oil injection gun is inserted into the oil injection port, and wherein the protruding portion blocks upward flow of oil to prevent blowing-back of the oil through the oil injection port.