Patent ID: 8674567
Filing Date: 2014-03-18
Classification: H02K

Abstract:
1. A unit housing for a motor unit, the unit housing comprising: a substantially cylindrical housing body including a ring-shaped stator and lead wires wound around the ring-shaped stator; an end housing made of a metal, the end housing being butted and coupled to an end surface of the substantially cylindrical housing body and covering an axial end of the substantially cylindrical housing body, the end housing having a peripheral wall and an end wall, the peripheral wall being coupled to the substantially cylindrical housing body, the end wall extending in an axially continuous form from the peripheral wall; and connectors including bolts to connect respectively 3-phase power lines to the lead wires led from the ring-shaped stator, each of the connectors being disposed inside the end housing, the 3-phase power lines being led in the unit housing from an outside through the end wall, wherein the peripheral wall includes a recess to secure an insulating space between an inner surface of the peripheral wall and each of the connectors, the recess being provided in the inner surface of the peripheral wall at a position close to the connectors, and the inner surface of the peripheral wall being provided to linearly extend from a bottom surface of the recess toward an opening end of the peripheral wall, wherein the peripheral wall includes a first inner surface and a second inner surface, wherein the first inner surface is provided at the opening end of the peripheral wall, wherein the second inner surface is provided closer to the bottom surface of the recess than the first inner surface, and wherein the first inner surface is provided below the second inner surface when viewed from an axial direction of the substantially cylindrical housing body.