Motor and air-conditioning apparatus

Patent metadata

Field	Value
Publication number	US-11502575-B2
Application number	US-201816767635-A
Country	US
Kind code	B2
Filing date	Jan 18, 2018
Priority date	Jan 18, 2018
Publication date	Nov 15, 2022
Grant date	Nov 15, 2022

Abstract

A motor includes a stator to which a substrate can be stably secured without increasing the size of the substrate. An air-conditioning apparatus includes the motor. At an end portion of the stator in the axial direction thereof, a substrate on which electronic components are mounted is provided. The stator includes: a stator core formed by stacking electromagnetic steel sheets, and including a plurality of teeth; insulators provided on the stator core; and a wire wound around the teeth, the teeth being coated with the insulators. The insulators have outer walls provided on respective core backs of the stator core. In a linearly developed state of the stator, where of the teeth, an outermost tooth is a first tooth, a tooth adjacent to the first tooth is a second tooth, another tooth adjacent to the second tooth is a third tooth, another tooth adjacent to the third tooth is a fourth tooth, and another tooth adjacent to the fourth tooth is a fifth tooth, the outer walls of the first, third and fifth teeth include respective substrate attachment pins for use in attachment of the substrate, and the outer walls of the first tooth include respective power terminals for use in supplying power to the wire.

First claim

The invention claimed is:

1. A motor comprising a stator where a substrate on which electronic components are mounted is provided, the substrate being located at an end portion of the stator in an axial direction of the stator,
wherein the stator includes
a stator core formed by stacking electromagnetic steel sheets, and including a plurality of teeth,
insulators provided on the stator core, and
a wire wound around the teeth, the teeth being coated with the insulators,

wherein the insulators with which the teeth are coated have outer walls provided on respective core backs of the stator core, and
wherein in a linearly developed state of the stator, where an outermost one of the teeth is a first tooth, one of the teeth that is adjacent to the first tooth is a second tooth, another one of the teeth that is adjacent to the second tooth is a third tooth, another one of the teeth that is adjacent to the third tooth is a fourth tooth, and another one of the teeth that is adjacent to the fourth tooth is a fifth tooth, the outer walls of the first tooth, the third tooth, and the fifth tooth include respective substrate attachment pins for use in attachment of the substrate, and the outer walls of each of the first tooth and the third tooth include one of three respective power terminals for use in supplying power to the wire, wherein each of the first tooth and third tooth include both one of the respective substrate attachment pins and one of the respective power terminals.

2. The motor of claim 1 , wherein each of the outer walls has an opening portion for use in drawing the wire from outside of the outer wall to inside thereof or from the inside of the outer wall to the outside thereof, the wire being wound around the teeth to form coils.

3. The motor of claim 2 , wherein in the outer walls of the teeth that include the power terminals, the opening portions are provided closer to respective centers of the teeth than the substrate attachment pins.

4. The motor of claim 3 , wherein in the outer walls of the teeth that include the power terminals, side surfaces of the opening portions that extend in the axial direction of the stator are formed such that the opening portions gradually expand toward inner sides of the outer walls.

5. The motor of claim 2 , wherein in the outer walls of ones of the tooth that include no power terminal, the substrate attachment pins are provided closer to respective centers of the tooth than the opening portions.

6. The motor of claim 1 , wherein the substrate attachment pins are octagonal prisms.

7. An air-conditioning apparatus comprising the motor of claim 1 .

Assignees

• Mitsubishi Electric Corp

Inventors

• Yamamoto Mineo
• Ishii Hiroyuki
• Oya Junichiro
• Urabe Yuto

Classifications

• H02K2211/03

  Machines characterised by circuit boards, e.g. pcb · CPC title

• H02K3/50

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

• H02K5/225 Primary

  Terminal boxes or connection arrangements (specially adapted for submersible motors H02K5/132) · CPC title

• F25B31/02

  of motor-compressor units · CPC title

• H02K3/522 Primary

  for generally annular cores with salient poles · CPC title