| 摘要 |
<p>The invention discloses a transmission case which copes with light weight requirements of the case and satisfies the reliability requirement that speed transmission movement oil does not leak outside from a joint part of a metal frame and a resin cover. In the transmission case (TC) which is formed by combining flanges of a main transmission case (1), a converter cover (2), and a side cover (3) which are partitioned, the side cover (3) forms a combined material, the combined material is formed by a metal frame (5) and a resin cover (6) which blocks an opening part of the metal frame (5), a joint part of the metal frame (5) and the resin cover (6) is enabled to form a superposition joint part (D) where a joint outer face (60a) of a blocked flange part (60) of the resin cover (6) is superposed on a joint inner face (50a) of a flange part (50) of the metal frame (5), and the joint inner face (50a) is exposed at a transmission mechanism side.</p> |
