JP2019193574A5 - - Google Patents

Claims (10)

A rotor (12) mounted on a rotating shaft (11);
A first frame end (14) rotatably supporting one end of the rotation shaft;
A second frame end (15) rotatably supporting the other end of the rotating shaft;
A stator core (13) provided on an outer peripheral side of the rotor while being sandwiched between the first frame end and the second frame end;
A winding extension portion that is inserted into a frame through hole (15e) formed in the second frame end and extending in the direction of the center axis of the rotating shaft, and extending from a stator winding (13a) wound around the stator core. (13b),
It has a main body part (21a) formed with an insertion hole (22) through which the winding extension part is inserted, and a flange part (21b) provided outside the main body part, and is inserted into the frame through hole. The flange portion is brought into contact with a peripheral portion of a second opening of the pair of openings formed by the frame through-holes at the second frame end opposite to the first opening facing the stator core. A grommet (21) attached to the second frame end;
A control board (18) provided on a side of the second frame end opposite to the side of the stator core, and for controlling energization of the stator windings;
The control board is arranged at a position facing the frame through-hole,
The winding extending portion electrically connects the control board and the stator winding,
The flange portion is provided in the middle of the main body portion in a direction in which the insertion hole extends,
One side of the main body in the extending direction of the insertion hole with respect to the flange portion is an inserted portion to be inserted into the frame through hole, and the other side is not inserted into the frame through hole. Extension portion (21d)
In the inserted portion, the distance from the portion farthest from the flange portion of the portion that contacts the inner peripheral surface of the frame through-hole to the portion where the flange portion contacts the peripheral portion of the second opening, distance from the plate surface of the second frame end side of the control board to the tip of the extending portion and rot length than,
In a state where the grommet is not attached to the second frame end, a portion of the insertion hole at a tip portion of the extension portion has a cross-sectional area smaller than that of the winding extension portion. A rotation part characterized by a diameter part (22a), and a part closer to the first opening than the diameter reduction part is a diameter expansion part (22b) larger than a cross-sectional area of the diameter reduction part. Electric machine. 2. The rotating electric machine according to claim 1, wherein a portion of the inserted portion that comes into contact with an inner peripheral surface of the frame through-hole is an annular protrusion (21c). 3. Three of the winding extending portions are inserted per one of the frame through holes,
3. The rotating electric machine according to claim 1, wherein the grommet corresponding to the three winding extension portions inserted into one frame through hole is integrally formed. 4. The said main-body part protrudes in the said 1st opening side of the said frame through-hole, The hook part (21e) which is hooked on the periphery of the said 1st opening is provided in the protrusion part , The Claims characterized by the above-mentioned. The rotating electric machine according to any one of claims 1 to 3 . Equipped with heat-generating components that generate heat when energized,
The second frame end has a heat sink portion (15c) for releasing heat generated by the heat generating component between the contact portion with the flange portion and the control board in the center axis direction. The rotating electric machine according to any one of claims 1 to 4, wherein Claims front Kinobede portion, in a state in which the flange portion is in contact with the periphery of the second opening, characterized in that the front end portion of the extending portion is away from the plate surface of the control board The rotating electric machine according to any one of claims 1 to 5 . Attached to a portion of the outer peripheral surface of the front Stories second frame end, a cover (20) surrounding said control board,
Before SL stator core is provided as the outer circumferential surface thereof is exposed to the outside without being enclosed in the cover,
The second frame end has a peripheral wall portion (15b) extending toward the stator core and having a distal end abutting on an outer edge portion of the stator core.
The peripheral wall forms a space surrounded by the stator core and the second frame end,
The rotating electric machine according to any one of claims 1 to 6 , wherein the frame through-hole is formed closer to the rotation shaft than the peripheral wall portion. The grommet is provided such that, when the flange portion is in contact with a peripheral portion of the second opening, a tip portion of the main body portion on the stator core side does not contact the stator winding. The rotating electric machine according to any one of claims 1 to 7 . It is a manufacturing method of the rotating electric machine according to any one of claims 1 to 8 ,
A step of inserting the winding extension into the frame through-hole,
In a state where the wire extending portion is inserted through the frame through hole, the grommet is inserted into the frame through hole from the second opening side while the wire extending portion is inserted through the insertion hole of the grommet. Attaching the grommet to the second frame end. It is a manufacturing method of the rotating electric machine according to any one of claims 1 to 8 ,
Attaching the grommet to the second frame end by inserting the grommet into the frame through hole from the second opening side at the second frame end;
A step of inserting the winding extension into the insertion hole of the grommet attached to the second frame end.