Rotating electrical machine for a vehicle
A rotating electrical machine for a vehicle includes a rectifier fixed to a fixing portion of a casing. The rectifier includes a heat sink to which a rectifier element is mounted, and a circuit board configured to electrically connect a stator lead routed out of a stator to the rectifier element. The heat sink includes an element mounting portion, and an axial fin protruding radially outward from the element mounting portion. A supporting portion configured to support the axial fin along an axial direction is formed on one of the casing and the axial fin. The supporting portion is arranged at a position away from the fixing portion so as to be adjacent to the stator lead guide when the rectifier is viewed along the axial direction.
1. A rotating electrical machine for a vehicle, comprising:
a rotator, which is configured to be rotated about an axis;
a stator, which is arranged coaxially with the rotator, and includes stator winding;
a casing, which is configured to support the rotator and the stator; and
a rectifier, which is fixed to a fixing portion of the casing, the rectifier including:
a rectifier element;
a heat sink to which the rectifier element is mounted, the heat sink being arranged so as to be opposed to the casing along an axial direction; and
a circuit board, which is configured to electrically connect a stator lead routed out of the stator winding to the rectifier element,
the heat sink including: an element mounting portion, to which the rectifier element is mounted; and an axial fin protruding radially outward from the element mounting portion,
the circuit board including a stator lead guide configured to guide the stator lead,
one of the axial fin and the casing including formed thereon a supporting portion configured to support the axial fin along the axial direction,
the supporting portion being arranged at a position away from the fixing portion so as to be adjacent to the stator lead guide when the rectifier is viewed along the axial direction.
2. A rotating electrical machine for a vehicle according to claim 1 , wherein the supporting portion comprises supporting portions each arranged at a position circumferentially sandwiching the stator lead guide.
3. A rotating electrical machine for a vehicle according to claim 1 , wherein a dimension of the axial fin in the axial direction is larger than a dimension of the element mounting portion in the axial direction.
4. A rotating electrical machine for a vehicle according to claim 2 , wherein a dimension of the axial fin in the axial direction is larger than a dimension of the element mounting portion in the axial direction.