Coil insertion apparatus and coil insertion method
AssigneeHonda Motor Co., Ltd.
InventorsNorihiko Hikima, Yasuto Ohashi, Takumi Miyamoto
Life of this patent
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Abstract
A coil insertion apparatus includes a coil diameter expander that expands a diameter of a coil assembly in a wound state from inside a stator core to insert the coil assembly into slots of the stator core, the coil diameter expander including a coil end pressing part that presses coil ends of the coil assembly from inside toward outside to expand the diameter, and a coil straight part pressing part that presses coil straight parts of the coil assembly to be inserted into the slots from inside toward outside to expand the diameter.
Claims6
A coil insertion apparatus comprising a coil diameter expander that expands a diameter of a coil assembly in a wound state from inside a stator core to insert the coil assembly into slots of the stator core,
- the coil diameter expander including
- a pair of coil end pressing parts that are disposed respectively on axial end portions of the stator core and each press a coil end at each axial end of the coil assembly from inside toward outside to expand the diameter, and
- a coil straight part pressing part that presses coil straight parts of the coil assembly to be inserted into the slots from inside toward outside to expand the diameter;
- wherein the coil diameter expander further includes a pair of limiters that are respectively disposed outside the coil assembly on axial end portions of the stator core, that limit outward movements of the coil ends to be expanded in diameter by the pair of coil end pressing parts, and that respectively pinch the coil ends with the pair of coil end pressing parts.
A coil insertion method of expanding a diameter of a coil assembly in a wound state from inside a stator core to insert the coil assembly into slots of the stator core, the coil insertion method comprising:
- coil end diameter expanding of allowing a pair of coil end pressing parts respectively disposed inside the coil assembly on axial end portions of the stator core to respectively press coil ends at axial ends of the coil assembly from inside toward outside to expand the diameter;
- and
- coil straight part diameter expanding of allowing a coil straight part pressing part disposed inside the coil assembly to press coil straight parts of the coil assembly to be inserted into the slots from inside toward outside to expand the diameter,
- wherein the coil straight part diameter expanding is executed together with the coil end diameter expanding to press both the coil ends and the coil straight parts of the coil assembly,
- outward movements of the coil ends to be expanded in diameter by the pair of coil end pressing parts are limited by a pair of limiters respectively disposed outside the coil ends on axial end portions of the stator core, and
- the coil ends of the coil assembly inserted into the slots are respectively pinched between the pair of coil end pressing parts and the pair of limiters.
Dependencies are inferred from the claim text.