Rotary electric machine having insulator material filled between conductive bodies

Patent metadata

Field	Value
Publication number	US-10439461-B2
Application number	US-201415101175-A
Country	US
Kind code	B2
Filing date	Oct 31, 2014
Priority date	Dec 5, 2013
Publication date	Oct 8, 2019
Grant date	Oct 8, 2019

Abstract

A rotational electric machine achieving both of productivity and insulation property is provided. A rotational electric machine includes an iron core having a plurality of slots, and a plurality of segment conductive bodies arranged in the slots, wherein the iron core includes a coil guide arranged at, at least, one of opening portions of the slots, and the coil guide includes a slot insertion portion located between the slot and the segment conductive body and at least one separation portion located between the segment conductive bodies, and the slot insertion portion and the separation portion are arranged in the slot together with the segment conductive body.

First claim

The invention claimed is:

1. A rotational electric machine comprising:
an iron core having slots; and
conductive bodies forming coils, the conductive bodies being arranged in the slots, wherein
the iron core includes a coil guide arranged at, at least, one of opening portions of the slots, and the coil guide includes a slot insertion portion located between the slot and the conductive bodies and at least one separation portion that separates the conductive bodies and located between the conductive bodies,
the slot insertion portion and the separation portion are arranged in the slot together with the conductive bodies,
an insulator material is filled between the conductive bodies and the slot,
the coil guide has opening portions adjacent in a radial direction that have the same shape and are offset relative to one another in a staggered arrangement,
each opening portion includes coil clearances that extend outward, in a circumferential direction from both a radial inner end and a radial outer end, and
the coil clearance in the radial inner end extends further in the circumferential direction than the coil clearance in the radial outer end.

2. The rotational electric machine according to claim 1 , wherein two coil guides arranged at both ends of the slots form a space for accumulating the insulation material filling material between the end portions facing each other in the slot.

3. The rotational electric machine according to claim 1 , wherein the coil guide has a flange portion at one end in the axial direction, and the flange portion covers a side surface portion of the iron core located on a circumference of the slot.

4. The rotational electric machine according to claim 1 , wherein two or more coil guides are provided in a circumferential direction.

5. The rotational electric machine according to claim 1 , wherein the coil guide is made of an insulation material.

6. The rotational electric machine according to any one of claim 5 , wherein the iron core is a stator.

7. The rotational electric machine according to any one of claim 5 , wherein the iron core is a rotator.

Assignees

• Hitachi Automotive Systems Ltd

Inventors

• Matahira Hiroshi
• Mori Yoshimi
• Oomori Takahiro
• Koizumi Takayuki

Classifications

• H02K3/50

  Fastening of winding heads, equalising connectors, or connections thereto · CPC title

• H02K3/34

  between conductors or between conductor and core, e.g. slot insulation · CPC title

• H02K2213/12

  Machines characterised by the modularity of some components · CPC title

• H02K15/067

  inserted in parallel to the axis of the slots or inter-polar channels · CPC title

• H02K3/345

  between conductor and core, e.g. slot insulation · CPC title