Vol. 59 No. 1 (2022)   New Products & Technologies
Technical Papers

Bilateral Gear that Enable Downsizing of Drive Unit for Mobile Vehicle

KENSUKE NISHIURA
KAZUMA OTAKA
KASTUHIKO SHODA
YASUTAKA FUJIMOTO

With the progress of electrification, demand for geared motors consisting of a high-speed motor and a reduction gear is increasing. In particular, there is a strong need for downsizing drive units for mobility applications such as automobiles, the market for which is expected to grow, so a first-mover advantage can be gained by developing a transmission unit that is both downsizing and large-reduction ratio. In this research, we focused on the bilateral gear developed by Yokohama National University as a new large-reduction-ratio mechanism that enables the significant downsizing of drive units and designed and manufactured a 50kW prototype gear for mobility applications. We also conducted a load test to verify its power transmission efficiency, temperature and vibration. This report gives an overview of the prototype bilateral gear and the results of the load test.