COIL INSERTION DEVICE AND COIL INSERTION METHOD
To improve the workability of coil insertion work by suppressing the inward return of a coil end portion due to spring-back after insertion into a slot.SOLUTION: A coil insertion device includes coil expanding means for inserting a coil assembly in a wound state into a slot in a stator core by expan...
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Format: | Patent |
Sprache: | eng ; jpn |
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Zusammenfassung: | To improve the workability of coil insertion work by suppressing the inward return of a coil end portion due to spring-back after insertion into a slot.SOLUTION: A coil insertion device includes coil expanding means for inserting a coil assembly in a wound state into a slot in a stator core by expanding the coil assembly in a wound state from the inside of the stator core. The coil expanding means includes a coil pressing portion that is disposed inside the coil assembly and presses a coil end portion of the coil assembly from the inside towards the outside to widen the coil diameter, and a restricting unit that is disposed on the outside of the coil assembly and restricts an outward movement of the coil end portion that is expanded by the coil pressing portion and clamps the coil end portion of the coil assembly inserted into the slot between the coil pressing portion and the restricting unit.SELECTED DRAWING: Figure 13
【課題】スロットへの挿入後のコイルエンド部のスプリングバックによる内方への戻りを抑制し、コイル挿入作業の作業性を向上させること。【解決手段】巻回状態のコイルアッセンブリを、ステータコアの内方から拡径することによって、ステータコアのスロットへ挿入するコイル拡径手段を有するコイル挿入装置であって、コイル拡径手段は、コイルアッセンブリの内側に配置され、コイルアッセンブリのコイルエンド部を内方から外方に向けて押圧して拡径させるコイル押圧部と、コイルアッセンブリの外側に配置され、コイル押圧部によって拡径されるコイルエンド部の外方への移動を制限するとともに、コイル押圧部との間で、スロットに挿入されたコイルアッセンブリのコイルエンド部を挟持する制限部と、を備える。【選択図】図13 |
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