Transmission apparatus for automobile or the like

A transmission apparatus for an automobile or the like comprising:

• a transmission gear mechanism including, therein, a speed-reducing small gear at an axial one side of an intermediate shaft;
• a final driving mechanism including, therein, a speed-reducing large gear at an axial one side of an axle, the speed-reducing large gear being engaged with the speed-reducing small gear;
• a casing including:
• a first chamber housing, therein, the transmission gear mechanism;
• a second chamber housing, therein, the final driving mechanism;
• a first inner surface facing, at a short distance away, an end surface of the speed-reducing large gear positioned at a side of the first chamber housing, therein, the transmission gear mechanism;
• a second inner surface facing, at a short distance away, an end surface of the speed-reducing small gear positioned at a side of the first chamber housing, therein, the transmission gear mechanism;
• and
• a case rib formed at the second inner surface, and projecting toward the first inner surface along undersides of the speed-reducing small gear, and of the speed-reducing large gear that meshes with the speed-reducing small gear, the case rib being connected to a bottom surface of the casing;
• and
• a wall which, viewed from a direction perpendicular to an axial direction of the speed-reducing large gear, is positioned between the first inner surface and the end surface of the speed-reducing large gear that faces the first inner surface;
• the wall including:
• a lower portion fixedly attached to a tip end surface of the case rib;
• and
• an edge portion arranged at a side of the differential gear mechanism and elastically in contact with the first inner surface;
• and the wall covering, at a short distance away, the end surface of the speed-reducing large gear that faces the first inner surface.