Electric motor, air conditioner, and electric apparatus

Patent metadata

Field	Value
Publication number	US-9954412-B2
Application number	US-201415027260-A
Country	US
Kind code	B2
Filing date	Oct 23, 2014
Priority date	Oct 24, 2013
Publication date	Apr 24, 2018
Grant date	Apr 24, 2018

Abstract

A stator includes: a sensor substrate attached to one end of a stator core in an axial direction of the stator core, the sensor substrate being provided with a bearing through hole and being provided with a notch on a periphery, the notch being used for leading out a power supply lead and a sensor lead; a sensor-lead board-in connector disposed between the bearing through hole and the notch on the surface of the sensor substrate on the counter-stator side, the sensor lead being connected to the sensor-lead board-in connector; and a power-supply-lead board-in connector disposed on the surface of the sensor substrate on the counter-stator side such that the power-supply-lead board-in connector faces the sensor-lead board-in connector with the bearing through hole therebetween, the power supply lead being connected to the power-supply-lead board-in connector.

First claim

The invention claimed is:

1. An electric motor comprising:
a sensor substrate attached to one end of a stator core in an axial direction of the stator core, the sensor substrate being provided with a bearing through hole for allowing a bearing of a rotor to pass and being provided with a notch on a periphery, the notch being used for leading out a power supply lead and a sensor lead;
a sensor-lead board-in connector disposed between the bearing through hole and the notch on a surface on an opposite side of a stator core side of the sensor substrate, the sensor lead being connected to the sensor-lead board-in connector; and
a power-supply-lead board-in connector disposed on the surface on an opposite side of the stator core side of the sensor substrate such that the power-supply-lead board-in connector faces the sensor-lead board-in connector with the bearing through hole therebetween, the power supply lead being connected to the power-supply-lead board-in connector.

2. The electric motor according to claim 1 , wherein the power supply lead is separated into two groups and routed to the notch along a periphery of the bearing through hole.

3. The electric motor according to claim 2 , further comprising a substrate pressing part attached to the surface on an opposite side of the stator core side of the sensor substrate, the substrate pressing part including a plurality of substrate pressing projections that come into contact with the sensor substrate and press on the sensor substrate, wherein
the power supply lead is routed by being guided by the substrate pressing projections disposed on the periphery of the bearing through hole.

4. The electric motor according to claim 3 , wherein the substrate pressing part includes a plurality of pins that are inserted into a plurality of pin through holes provided in the sensor substrate.

5. The electric motor according to claim 2 , further comprising a pair of notches for the power supply lead to escape therethrough on a bearing through hole side of the notch and on both ends of the notch in a direction orthogonal to a radial direction of the stator core, wherein
the power supply lead is routed from the power-supply-lead board-in connector to the notches for the power supply lead to escape therethrough such that the power supply lead bypasses the bearing through hole and is then routed to the stator core side of the sensor substrate through the notches for the power supply lead to escape therethrough, and
when viewed in plan from a side opposite to the stator core side, the sensor lead is laid on the power supply lead that is routed to the stator core side of the sensor substrate via the notches for the power supply lead to escape therethrough.

6. The electric motor according to claim 5 , wherein
a plurality of sensor leads are connected to the sensor-lead board-in connector,
a length between the notches for the power supply lead to escape therethrough is larger than a width occupied by the sensor leads, and
the notches for the power supply lead to escape therethrough are disposed outside a range that is occupied by the sensor leads.

7. An air conditioner comprising the electric motor according to claim 1 .

8. An electric apparatus comprising the electric motor according to claim 1 .

Assignees

• Mitsubishi Electric Corp

Inventors

• Yamamoto Mineo
• Sakanobe Kazunori
• Ishii Hiroyuki
• Aso Hiroki
• Oya Junichiro
• Urabe Yuto

Classifications

• H02K2213/12

  Machines characterised by the modularity of some components · CPC title

• H02K2211/03

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

• H02K15/12

  Impregnating, moulding insulation, heating or drying of windings, stators, rotors or machines · CPC title

• H02K5/08

  Insulating casings · CPC title

• H02K3/522

  for generally annular cores with salient poles · CPC title