Insulator, stator assembly, rotating electrical machine, and connection board

Patent metadata

Field	Value
Publication number	US-9712014-B2
Application number	US-201414451398-A
Country	US
Kind code	B2
Filing date	Aug 4, 2014
Priority date	Aug 6, 2013
Publication date	Jul 18, 2017
Grant date	Jul 18, 2017

Abstract

An insulator to be attached to a laminated core of a rotating electrical machine includes a frame-shaped body which surrounds the laminated core and around which a coil wire is wound, and first and second flanges provided at both open sides of the body. The second flange has a first recess that extends toward the body.

First claim

What is claimed is:

1. A stator assembly comprising:
a stator including a plurality of insulators to be attached to a stator core of a rotating electrical machine, each of the insulators comprising:
a frame-shaped body which surrounds the stator core and around which a coil wire is wound; and
a flange provided at least at one of open sides of the body, the flange having at least one recess that extends toward the body and at least one projection located adjacent to the recess;

a connection portion that is provided on the plurality of insulators at one side of the insulators in an axial direction and to which end portions of the coil wires of the respective insulators are connected; and
a resin mold that covers the connection portion and the coil wires,
wherein the flange of each insulator further includes a support whose height in a projecting direction is substantially the same as a height of the projection in the projecting direction, and
wherein the connection portion includes
first receivers that have a recessed shape and receive the projections of the flanges of the respective insulators, and
second receivers that have a recessed shape and receive the supports of the flanges of the respective insulators.

2. A rotating electrical machine comprising:
the stator assembly according to claim 1 ;
a rotating shaft disposed inside the stator; and
a rotor fixed to the rotating shaft.

3. A connection board to which end portions of coil wires wound around respective insulators are to be connected, the connection board comprising:
a plurality of conductive members to be connected to the end portions to the coil wires of the respective insulators; and
an insulating member that at least partially covers surfaces of the conductive members,
wherein each of the insulators includes a body around which the corresponding coil wire is wound, and a flange that is provided on the body and that includes at least one recess that extends toward the body, at least one projection located adjacent to the recess, and a support whose height in a projecting direction is substantially the same as a height of the projection in the projecting direction, and
wherein the insulating member includes
first receivers that have a recessed shape and receive the projections of the flanges of the respective insulators, and
second receivers that have a recessed shape and receive the supports of the flanges of the respective insulators.

Assignees

• Yaskawa Electric Corp

Inventors

• Kuroiwa Yasufumi
• Yamaguchi Kanta
• Kitano Yoichi

Classifications

• H02K3/522 Primary

  for generally annular cores with salient poles · CPC title

• H02K3/345 Primary

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

• H02K2203/03

  Machines characterised by the wiring boards, i.e. printed circuit boards or similar structures for connecting the winding terminations · CPC title

• H02K2203/12

  Machines characterised by the bobbins for supporting the windings · CPC title

• H02K3/30

  Windings characterised by the insulating material · CPC title