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US 12,744,423 B2Granted
Rotary electrical machine
AssigneeMitsubishi Electric Corporation
InventorsHiroshi Aida, Kengo Fujimoto, Shogo Hatano
Life of this patent
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Abstract
A rotary electrical machine includes a stator and a rotor. The stator includes a plurality of iron cores that are annularly disposed, windings that are wound to each of the plurality of iron cores, connection terminals to which the windings are connected to, and molded members that partially cover the plurality of iron cores and the windings. The rotor rotates around an axis that coincides with a circular center of the plurality of iron cores. The molded members have resin portions that cover the plurality of iron cores and the windings, and a plurality of exposed terminal portions that expose the connection terminals.
Claims11
A rotary electrical machine comprising:
- a stator that includes a plurality of iron cores that are annularly disposed;
- windings that are wound to each of the plurality of iron cores;
- connection terminals to which the windings are connected to;
- molded members that partially cover the plurality of iron cores and the windings, and fix the plurality of winding cores together;
- and
- a rotor that rotates around an axis that coincides with a circular center of the plurality of iron cores, wherein the molded members have resin portions that cover the plurality of iron cores and the windings, and a plurality of exposed terminal portions that expose the connection terminals,
- the windings have terminal wires that connect to the windings;
- the terminal wires are positioned in each of the exposed terminal portions;
- the terminal wires have stress absorbing portions that absorb stresses generated in the terminal wires, and
- the stress absorbing portions have an S shape, wherein
- the S shape has:
- a first wire portion that protrudes towards an orthogonal direction that is orthogonal to an axial direction, and
- a second wire protrusion that protrudes to an opposite direction of the first protrusion,
- a first end of the first wire protrusion and a first end of the second wire protrusion are connected to one another, and
- the first and the second wire portions are configured to absorb stresses generated in the terminal wires.
12 more elements
A rotary electrical machine comprising:
- a stator that includes a plurality of iron cores that are annularly disposed;
- windings that are wound to each of the plurality of iron cores;
- connection terminals to which the windings are connected to;
- molded members that partially cover the plurality of iron cores and the windings;
- and
- a rotor that rotates around an axis that coincides with a circular center of the plurality of iron cores, wherein the molded members have resin portions that cover the plurality of iron cores and the windings, and a plurality of exposed terminal portions that expose the connection terminals, and the windings have terminal wires that connect to the windings and the terminal wires are positioned in each of the exposed terminal portions;
- winding holders that are attached to each of the plurality of iron cores;
- wherein
- the winding holders have arc grooves that extend along the circumferential direction of the stator;
- a part of the windings is disposed in the arc grooves;
- and
- the molded portions cover the winding holders.
9 more elements
A rotary electrical machine comprising:
- a stator that includes a plurality of iron cores that are annularly disposed;
- windings that are wound to each of the plurality of iron cores;
- connection terminals to which the windings are connected to;
- molded members that partially cover the plurality of iron cores and the windings;
- and
- a rotor that rotates around an axis that coincides with a circular center of the plurality of iron cores, wherein the molded members have resin portions that cover the plurality of iron cores and the windings, and a plurality of exposed terminal portions that expose the connection terminals;
- winding holders that are attached to each of the plurality of iron cores;
- wherein
- the winding holders have arc grooves that extend along the circumferential direction of the stator;
- a part of the windings is disposed in the arc grooves;
- and
- the molded portions cover the winding holders, wherein
- the windings have terminal wires that connect to the windings;
- the terminal wires are positioned in each of the exposed terminal portions;
- and
- the terminal wires have deformation promoting portions that deform due to the stresses generated in the terminal wires.
13 more elements
Dependencies are inferred from the claim text.