Patent ID: 9483010
Filing Date: 2016-11-01
CPC Classification: F16H,G03G

Claim Text:
1. A gear apparatus comprising: a gear comprising a shaft hole and a gear portion; a rotation shaft that is inserted into the shaft hole; a reinforcing member comprising a through hole into which the rotation shaft is inserted, and that has a stiffness that is higher than a stiffness of the gear; a first receiving portion that is provided at the gear; a first protruding portion that is provided at the reinforcing member and is configured to be engaged with the first receiving portion in a direction of rotation of the gear, such that the reinforcing member and the gear rotate together; a second protruding portion that is provided at the rotation shaft; and a second receiving portion that is provided at the reinforcing member and is configured to be engaged with the second protruding portion in the direction of rotation, such that the reinforcing member and the rotation shaft rotate together, wherein the gear further comprises a boss portion in which the shaft hole is formed, a rim portion in which the gear portion is formed, and a web portion comprising a plurality of radial rib portions, that connects the boss portion and the rim portion, wherein the first receiving portion comprises a radial rib portion, from among the plurality of radial rib portions, that extends radially from the boss portion, and wherein the first protruding portion contacts a radial rib portion in the direction of rotation.