Abstract: A flange portion of a reservoir plate is provided with a holding portion that holds a working oil supply pipe disposed on a converter housing and that is composed of an overhanging portion formed so as to overhang toward the converter housing and a dented portion formed in the overhanging portion along the working oil supply pipe. Consequently, it is possible to reduce the number of components and achieve better assembly compared to a configuration in which another member such as a clamp member is used to hold the working oil supply pipe. Since the holding portion is formed in a complex shape from the overhanging portion and the dented portion with recesses and projections, moreover, the strength of the holding portion against bending etc. can be enhanced.

Abstract: A sector-shaped cutaway portion which exposes a portion of a differential ring gear from a tooth tip to a tooth root is formed in a flange portion of a reservoir plate to extend in the rotational direction of the differential ring gear from an opening initial-end portion which is provided at a location rotated from the vertically lower portion of the differential ring gear by 90 degrees in the rotational direction, and the helix of the differential ring gear is formed so as to provide a motion component directed toward a converter housing (toward a working oil storage chamber) to working oil raked up by the differential ring gear. Consequently, working oil raked up by the differential ring gear can be directly splattered from the cutaway portion toward the converter housing, which makes it possible to suppress a residence of working oil in a differential chamber.

Abstract: An extending curved portion is provided below a bearing used in a bearing that supports a counter shaft of a reservoir plate to extend so as to receive the bearing, and to swell toward a differential chamber with respect to a bearing support portion that supports the bearing. In addition, the bearing support portion is provided with drainpipe-like ribs that serve as drainpipes that lead working oil to the extending curved portion. Consequently, working oil supplied from a working oil supply hole to the bearing and flowing down from the center of rotation of the bearing can be led to a working oil storage chamber.

Abstract: A differential ring gear is a helical gear disposed so as to rake up working oil in a differential chamber obliquely toward a working oil storage chamber 65 when the differential ring gear is rotated in the main rotational direction. A ring gear covering portion of a reservoir plate that separates the differential chamber and the working oil storage chamber from each other is provided with first and second guide portions along upper edge portions of first and second opening portions configured to discharge the working oil raked up by the differential ring gear. Lower surfaces of the first and second guide portions are formed to be inclined upward toward the working oil storage chamber.

Abstract: A differential case of a differential gear has a pair of openings formed facing each other on an axis X that is orthogonal to a rotational axis of a differential ring gear. A reservoir plate (partitioning member) that partitions a space in a transmission case into a differential chamber and a working oil storage chamber has a tubular portion that surrounds a part of the differential case. The tubular portion has a discharge hole formed so as to be able to face the pair of openings as the differential case is rotated about the rotational axis.

Abstract: A transaxle case with an overhanging portion that overhangs outward relative to a vertical line (a tangential line) that extends upward from a 90-degree rotated portion at a location rotated from the vertically lower portion of a differential ring gear by 90 degrees, and an extending rib that extends from the overhanging portion toward the center of rotation of the differential ring gear to the vicinity of the outer periphery of the differential ring gear, and the overhanging portion and the extending rib constitute a splattering space. The lower surface of the extending rib is formed as an inclined surface such that working oil is pushed toward a converter housing when working oil splattered to the splattering space collides against the lower surface. Consequently, working oil is caused to be splattered to the splattering space, collides against the lower surface of the extending rib, and pushed toward the converter housing.

Abstract: A flange portion of a reservoir plate is provided with a holding portion that holds a working oil supply pipe disposed on a converter housing and that is composed of an overhanging portion formed so as to overhang toward the converter housing and a dented portion formed in the overhanging portion along the working oil supply pipe. Consequently, it is possible to reduce the number of components and achieve better assembly compared to a configuration in which another member such as a clamp member is used to hold the working oil supply pipe. Since the holding portion is formed in a complex shape from the overhanging portion and the dented portion with recesses and projections, moreover, the strength of the holding portion against bending etc. can be enhanced.

Abstract: A sector-shaped cutaway portion which exposes a portion of a differential ring gear from a tooth tip to a tooth root is formed in a flange portion of a reservoir plate to extend in the rotational direction of the differential ring gear from an opening initial-end portion which is provided at a location rotated from the vertically lower portion of the differential ring gear by 90 degrees in the rotational direction, and the helix of the differential ring gear is formed so as to provide a motion component directed toward a converter housing (toward a working oil storage chamber) to working oil raked up by the differential ring gear. Consequently, working oil raked up by the differential ring gear can be directly splattered from the cutaway portion toward the converter housing, which makes it possible to suppress a residence of working oil in a differential chamber.

Abstract: An extending curved portion is provided below a bearing used in a bearing that supports a counter shaft of a reservoir plate to extend so as to receive the bearing, and to swell toward a differential chamber with respect to a bearing support portion that supports the bearing. In addition, the bearing support portion is provided with drainpipe-like ribs that serve as drainpipes that lead working oil to the extending curved portion. Consequently, working oil supplied from a working oil supply hole to the bearing and flowing down from the center of rotation of the bearing can be led to a working oil storage chamber.

Abstract: A differential case of a differential gear has a pair of openings formed facing each other on an axis X that is orthogonal to a rotational axis of a differential ring gear. A reservoir plate (partitioning member) that partitions a space in a transmission case into a differential chamber and a working oil storage chamber has a tubular portion that surrounds a part of the differential case. The tubular portion has a discharge hole formed so as to be able to face the pair of openings as the differential case is rotated about the rotational axis.

Abstract: A transaxle case with an overhanging portion that overhangs outward relative to a vertical line (a tangential line) that extends upward from a 90-degree rotated portion at a location rotated from the vertically lower portion of a differential ring gear by 90 degrees, and an extending rib that extends from the overhanging portion toward the center of rotation of the differential ring gear to the vicinity of the outer periphery of the differential ring gear, and the overhanging portion and the extending rib constitute a splattering space. The lower surface of the extending rib is formed as an inclined surface such that working oil is pushed toward a converter housing when working oil splattered to the splattering space collides against the lower surface. Consequently, working oil is caused to be splattered to the splattering space, collides against the lower surface of the extending rib, and pushed toward the converter housing.

Abstract: A differential ring gear is a helical gear disposed so as to rake up working oil in a differential chamber obliquely toward a working oil storage chamber 65 when the differential ring gear is rotated in the main rotational direction. A ring gear covering portion of a reservoir plate that separates the differential chamber and the working oil storage chamber from each other is provided with first and second guide portions along upper edge portions of first and second opening portions configured to discharge the working oil raked up by the differential ring gear. Lower surfaces of the first and second guide portions are formed to be inclined upward toward the working oil storage chamber.