Stator coil including sequentially connected segment conductors preferably applicable to an electric rotary machine
First Claim
1. A stator coil including sequentially connected segment conductors, wherein each segment conductor includes a pair of leg portions individually inserted into two slots of a stator core spaced at substantially one magnetic pole pitch and one head portion continuously formed with said pair of leg portions and disposed at a head coil end, the leg portions of said segment conductors are sequentially connected at a tail coil end to form a coil group occupying a coil group layer of said slot which has even conductor insertion positions neighboring with each other, said coil group includes plural partial coils being mutually connected for each phase, said stator coil includes a bus bar array board including plural inter-group crossover bus bars and an electric insulating member, said inter-group crossover bus bars are disposed in a circumferential direction or a radial direction to connect end portions of said partial coils, and said inter-group crossover bus bars are integrally supported in said electric insulating member.
1 Assignment
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Accused Products
Abstract
A stator coil includes a coil portion wound around a stator core and a terminal board serving as a bus bar array board. The coil portion is arranged by sequentially connected segment conductors. The terminal board is a molded ring plate member disposed adjacently to a head coil end of the coil portion in the axial direction and elongated in the radial direction. The turn number of the stator coil is easily adjustable by selecting an optimum one of a plurality of terminal boards.
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Citations
10 Claims
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1. A stator coil including sequentially connected segment conductors, wherein
each segment conductor includes a pair of leg portions individually inserted into two slots of a stator core spaced at substantially one magnetic pole pitch and one head portion continuously formed with said pair of leg portions and disposed at a head coil end, the leg portions of said segment conductors are sequentially connected at a tail coil end to form a coil group occupying a coil group layer of said slot which has even conductor insertion positions neighboring with each other, said coil group includes plural partial coils being mutually connected for each phase, said stator coil includes a bus bar array board including plural inter-group crossover bus bars and an electric insulating member, said inter-group crossover bus bars are disposed in a circumferential direction or a radial direction to connect end portions of said partial coils, and said inter-group crossover bus bars are integrally supported in said electric insulating member.
Specification