Drive apparatus

A drive apparatus comprising:

• a motor including a rotor arranged to rotate about a motor axis;
• a transmission system arranged to transfer power of the motor to an axle;
• and
• a housing arranged to house the motor and the transmission system;
• wherein
• the housing includes:
• a tubular motor housing arranged to extend from a first axial side to a second axial side along the motor axis;
• and
• a gear housing arranged on the second axial side of the motor housing, and joined to the motor housing;
• the transmission system includes a gear system including a combination of a first gear supported by a first bearing and a second gear supported by a second bearing;
• the gear housing includes:
• a first holding portion arranged to hold the first bearing, and a second holding portion arranged to hold the second bearing;
• and
• surrounding ribs arranged to project to the second axial side from a wall surface of the gear housing, and surround an area that encompasses the first bearing and the second bearing when viewed in an axial direction;
• the surrounding ribs include:
• a plurality of arc-shaped ribs including an arc-shaped rib arranged to extend along an outer circumferential edge of the first bearing, and an arc-shaped rib arranged to extend along an outer circumferential edge of the second bearing;
• and
• a plurality of straight ribs connected to the plurality of arc-shaped ribs;
• and
• one or more of the straight ribs are each located on a common tangent to the first bearing and the second bearing.