Rotating electrical machine
View Patent ↗The present invention facilitates size and weight reduction by enhancing a coil space factor. A rotating electrical machine according to the present invention is provided with a core having a slot that is continuous in the axial direction, a winding provided within the slot, and an insulating member provided between the slot and the winding and is characterized in that a first pyramid-frustum surface of the insulating member that is provided on the side of the insulating member that is inserted into the slot and/or a second pyramid-frustum surface that is provided on the side of the insulating member into which the winding is inserted is provided at an axial end of the core.
1. A rotating machine, comprising:
a core provided with a slot which is in communication with the core in an axial direction thereof;
a winding provided in the slot; and
an insulating member provided between the slot and the winding, wherein
in the insulating member, a first inclined surface provided on an insertion side into the slot and/or a second inclined surface provided on an insertion side of the winding is provided on an end of the core in its axial direction,
the insulating member is a sheet-shaped insulator which is bent into a cylindrical shape, and is provided with the first and/or second inclined surfaces,
a first angle, formed between an inner peripheral surface of the insulating member and the first inclined surface that facilitates insertion of the insulating member into the slot, is an acute angle,
a second angle, formed between the inner peripheral surface of the insulating member and the second inclined surface that facilitates insertion of the winding into the insulating member, is an obtuse angle, and
an outer peripheral length of the end of the insulating member on a side of the first inclined surface becomes shorter in an insertion direction into the slot and is equal to or shorter than an outer peripheral length of a cylindrical part of the insulating member.
2. The rotating machine according claim 1 , wherein the first inclined surface that facilitates insertion of the insulating member into the slot inclines toward the slot, and
the second inclined surface that facilitates insertion of the winding into the insulating member inclines toward the winding.
3. The rotating machine according claim 2 , wherein
the winding includes multiple segment conductors each including a connecting portion and a folded-back portion, and the segment conductors are connected to each other through the connecting portion,
the first inclined surface that facilitates insertion of the insulating member into the slot is placed on a side of the connecting portion in the axial direction of the core, and
the second inclined surface that facilitates insertion of the winding into the insulating member is placed on a side of the folded-back portion.
4. The rotating machine according claim 1 , wherein
when the insulating member is provided with the first inclined surface for facilitating insertion of the insulating member into the slot, the first inclined surface inclines toward the slot, and
when the insulating member is provided with the second inclined surface for facilitating insertion of the winding into the insulating member, the second inclined surface inclines toward the winding.
5. The rotating machine according claim 4 , wherein
the winding includes multiple segment conductors each including a connecting portion and a folded-back portion, and the segment conductors are connected to each other through the connecting portion,
when the insulating member is provided with the first inclined surface that facilitates insertion of the insulating member into the slot, the first inclined surface is placed on a side of the connecting portion in the axial direction of the core, and
when the insulating member is provided with the second inclined surface that facilitates insertion of the winding into the insulating member, the second inclined surface is placed on a side of the folded-back portion in the axial direction of the core.