Motor
AssigneeNidec Corporation
InventorYoichi SEKII
Life of this patent
Estimating the term…
Abstract
A conducting wire includes an incoming portion, coil portions, an outgoing portion leading out of an armature, and circumferentially extending portions. The circumferentially extending portions include an alternately arranged portion extending alternately on first and second axial sides of circumferentially adjacent ones of teeth, and a passage line portion extending on a same axial side of circumferentially adjacent ones of the teeth. One to two rounds of the circumferentially extending portions extend along a core back. The passage line portion extends on a same axial side over two of the teeth which have at least one of the incoming portion and the outgoing portion located circumferentially therebetween, and is radially outside of at least one of the incoming portion and the outgoing portion.
Claims7
A three-phase motor comprising:
- a rotor rotatable about a central axis extending in a vertical direction;
- and
- a stator radially opposite to the rotor;
- wherein
- the stator includes:
- an armature;
- and
- a base that holds the armature;
- the armature includes:
- an annular core back extending in an axial direction;
- 6S teeth extending radially from the core back and in a circumferential direction where S is a positive integer;
- and
- conducting wires for three phases;
- each of the conducting wires for three phases includes:
- an incoming portion leading from a first axial side into the armature;
- a plurality of coil portions each of which is wound around a corresponding one of the teeth;
- an outgoing portion leading from a second axial side to the first axial side to be drawn out of the armature;
- and
- circumferentially extending portions each of which extends in the circumferential direction along the core back to join the incoming portion to one of the coil portions, to join one of the coil portions to another one of the coil portions, or to join one of the coil portions to the outgoing portion;
- the circumferentially extending portions include:
- an alternately arranged portion extending alternately on the first and second axial sides of circumferentially adjacent ones of the teeth;
- and
- a passage line portion extending on a same axial side of circumferentially adjacent ones of the teeth;
- one to two rounds of the circumferentially extending portions are located along the core back;
- and
- the passage line portion extends on a same axial side over two of the teeth which have at least one of the incoming portion and the outgoing portion located circumferentially therebetween, and is radially outside of at least one of the incoming portion and the outgoing portion.
Dependencies are inferred from the claim text.