Electric compressor for vehicle

Patent metadata

Field	Value
Publication number	US-9698644-B2
Application number	US-201514631951-A
Country	US
Kind code	B2
Filing date	Feb 26, 2015
Priority date	Mar 3, 2014
Publication date	Jul 4, 2017
Grant date	Jul 4, 2017

Abstract

A compressor equipped with an electric motor having a stator including a stator core, coils, and a string. The stator core is formed of laminated core plates and has crimped portions in boundaries between a yoke and bases of teeth. The crimped portions are spaced at equal intervals in a circumferential direction of the stator core. Coil ends are laced by the string in such a way that the string is not passed through teeth spaces having the crimped portions disposed outward thereof in a radial direction of the stator core, but passed through the teeth spaces that are located adjacently on opposite sides of each of the teeth spaces having the crimped portions disposed radially outward thereof and also passed through at least one of any two adjacent of the teeth spaces.

First claim

What is claimed is:

1. An electric compressor for a vehicle, the electric compressor being equipped with a rotating electric machine including a stator, the stator comprising:
a stator core being formed into an annular shape and having an annular yoke and a plurality of teeth that extends radially from the yoke to define a plurality of slots between the teeth, the stator core being formed of a plurality of laminated core plates and having a plurality of crimped portions in boundaries between the yoke and bases of the teeth or in the yoke to fix the core plates together, the crimped portions being spaced at equal intervals in a circumferential direction of the stator core;
coils of a plurality of phases arranged on the slots, respectively, each coil having a plurality of coil ends that extend out from one end of the stator core in an axial direction of the stator core, wherein a plurality of teeth spaces are defined between each coil end and the stator core and each teeth space is provided for one of the teeth, respectively; and
a string by which the coil ends are laced in such a way that the string is not passed through the teeth spaces having the crimped portions disposed outward thereof in a radial direction of the stator core, but passed through the teeth spaces that are located adjacently on opposite sides of each of the teeth spaces having the crimped portions disposed radially outward thereof and also passed through at least one of any two adjacent of the teeth spaces.

2. The electric compressor for a vehicle according to claim 1 , wherein the string is passed through all the teeth spaces other than the teeth spaces having crimped portions disposed outward thereof in a radial direction of the stator core.

3. The electric compressor for a vehicle according to claim 1 , wherein the stator has an even number of the crimped portions.

Assignees

• Toyota Jidoshokki Kk

Inventors

• Fukasaku Hiroshi
• Okuyama Shinichi

Classifications

• H02K1/16

  Stator cores with slots for windings · CPC title

• H02K3/50 Primary

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

• H02K2201/09

  Magnetic cores comprising laminations characterised by being fastened by caulking · CPC title

• H02K3/48 Primary

  in slots · CPC title

• H02K3/345

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