Armature, rotating electric machine, cross-flow fan, and method for manufacturing pair of teeth of armature

Patent metadata

Field	Value
Publication number	US-10320253-B2
Application number	US-201515322901-A
Country	US
Kind code	B2
Filing date	Jun 29, 2015
Priority date	Jul 1, 2014
Publication date	Jun 11, 2019
Grant date	Jun 11, 2019

Abstract

An armature coil includes a first portion, a second winding portion, a first winding end, a second winding end, and a crossover portion, and is continuously wound. The first winding portion is concentratedly wound in a counterclockwise winding direction with respect to a direction obtained in viewing a second end portion from a first end portion of a tooth, as it passes from the first winding end to the crossover portion. The second winding portion is concentratedly wound in a clockwise winding direction with respect to a direction obtained in viewing a second end portion from a first end portion of the tooth, as it passes from the crossover portion to the second winding end.

First claim

The invention claimed is:

1. An armature composing a rotating electric machine including a field element having (12±2)n poles, n being a positive integer, said armature comprising:
12n teeth arranged in a circumferential direction; and
an armature coil concentratedly wound around each of said teeth,
said teeth being divided into 6n tooth pairs, each of said tooth pairs including a pair of teeth adjacent in said circumferential direction,
each of said teeth including a first end portion that is farther from said field element, and a second end portion that is closer to said field element,
said armature coil being continuously wound around each of said tooth pairs and including: a first winding end existing at said first end portion of one of said pair of teeth; a second winding end existing at said first end portion of the other of said pair of teeth;
a crossover portion;
a first winding portion being wound around said one of said pair of teeth between said first winding end and said crossover portion; and a second winding portion being wound around the other of said pair of teeth between said crossover portion and said second winding end,
wherein said armature coil in said first winding portion is wound in a first winding direction with respect to a direction obtained in viewing said second end portion from said first end portion of said one of said pair of teeth, as said armature coil passes from said first winding end to said crossover portion,
said armature coil in said second winding portion is wound in a second winding direction with respect to a direction obtained in viewing said second end portion from said first end portion of the other of said pair of teeth, as said armature coil passes from said crossover portion to said second winding end,
said first winding direction is opposite to said second winding direction; and
a printed circuit board including:
a wiring pattern mutually connecting said second winding end of a first one of said tooth pairs, said first winding end of a second one of said tooth pairs, and said first winding end of a third one of said tooth pairs;
a wiring pattern mutually connecting said first winding end of said first one of said tooth pairs and said first winding end of a fourth one of said tooth pairs;
a wiring pattern mutually connecting said second winding end of said second one of said tooth pairs and said second winding end of a fifth one of said tooth pairs; w
a wiring pattern mutually connecting said second winding end of said third one of said tooth pairs and said second winding end of a sixth one of said tooth pairs,
wherein said first winding portion of said first one of said tooth pairs, said second winding portion of said first one of said tooth pairs, said first winding portion of said third one of said tooth pairs, said second winding portion of said third one of said tooth pairs, said first winding portion of said fifth one of said tooth pairs, said second winding portion of said fifth one of said tooth pairs, said first winding portion of said fourth one of said tooth pairs, said second winding portion of said fourth one of said tooth pairs, said first winding portion of said sixth one of said tooth pairs, said second winding portion of said sixth one of said tooth pairs, said first winding portion of said second one of said tooth pairs, and said second winding portion of said second one of said tooth pairs are arranged in said circumferential direction in this order.

2. A rotating electric machine including said armature according to claim 1 and said field element.

3. The rotating electric machine according to claim 2 ,
wherein said field element includes magnets surrounding said armature, and said rotating electric machine is of an outer rotor type.

4. A cross-flow fan driven by said rotating electric machine according to claim 3 .

5. The rotating electric machine according to claim 3 ,
wherein said magnets are resin magnets.

6. A cross-flow fan driven by said rotating electric machine according to claim 5 .

7. A method for manufacturing said tooth pairs to be employed in said armature according to claim 1 , said method comprising the steps of:
arranging said first end portions of said pair of teeth that form each of said tooth pairs to be opposite to each other to obtain a first structure;
winding a wire around said pair of teeth in one direction in said first structure and forming said armature coil on said pair of teeth to obtain a second structure; and
bringing said second end portions of said pair of teeth in said second structure closer to each other and directing said first end portions almost in a same direction.

Assignees

• Daikin Ind Ltd

Inventors

• Nakamasu Shin
• Fujita Hiroki
• Fujii Hirokazu
• Fukui Ryou
• Inoue Kouji
• Satou Junichi

Classifications

• H02K1/2786

  Outer rotors · CPC title

• H02K3/522

  for generally annular cores with salient poles · CPC title

• H02K1/148

  Sectional cores (H02K1/141 takes precedence) · 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

• H02K3/18 Primary

  Windings for salient poles · CPC title