| 摘要 |
PURPOSE:To reduce the load which acts onto the gear surface of a trochoid system planetary gear mechanism by forming the gear form of an internal gear to the trochoid inner envelope including the circular gear form drawn by an external gear. CONSTITUTION:An external gear 2 having circular gear form is engaged with a fixed intenal gear having circular gear form, and the outer gear 2 is applied with an eccentric movement and revolved around, and as a result of this, the gear 2 is applied with the revolution on its axis, which is taken-out as the revolution motion by an universal joint. The gear form 1' of the ternal gear 4 is formed to the trochoid inner envelope which includes circular gear form at both ends and is synthesized from the contiguous circular gear form part P and the gear form part Q of the internal gear which is obtained as the opposite gear form when the gear forms of P and the external gear are epitrochoid parallel curve. |
