Patent ID: 9083209
Filing Date: 2015-07-14
Classification: H02K

Abstract:
1. An electric rotating machine comprising: a casing having a through-hole (1) that penetrates the casing in a penetration direction, the penetration direction being a bottom-top direction, and (2) through which an internal space of the casing communicates with an external space; and a drain member configured to drain water from the internal space of the casing to the external space, wherein the drain member has a mounting portion that is mounted to the through-hole of the casing, the mounting portion includes at least a pair of hooks that are arranged away from each other, each of the hooks has a proximal part and a distal part, the proximal part extending in the penetration direction of the through-hole of the casing, the distal part having a distal end which is positioned furthest from the proximal part in the penetration direction and makes up an insertion end of the mounting portion, the proximal parts of the hooks have flexibility so as to flex in a flexural direction which is perpendicular to the penetration direction of the through-hole, wherein the mounting portion of the drain member is mounted to the through-hole of the casing by inserting the hooks into the through-hole in the penetration direction from the insertion ends of the mounting portion, when passing through the through-hole, the distal parts of the hooks make contact with an inner wall of the through-hole, thereby causing the proximal parts to flex in the flexural direction so as to reduce the distance between the distal parts in the flexural direction, after the passing of the distal parts through the through-hole, the proximal parts return to their original shapes, and the distal parts are caught on an inner surface of the casing around the through-hole, the inner surface defining the internal space of the casing, and wherein each of the hooks of the drain member has a protrusion that protrudes from an outer surface of the proximal part of the hook toward the inner wall of the through-hole to restrict movement of the hook with respect to the through-hole, and the through-hole is surrounded by the inner wall formed in the casing.