Motor and vehicle including same

Patent metadata

Field	Value
Publication number	US-2018367013-A1
Application number	US-201615778065-A
Country	US
Kind code	A1
Filing date	Nov 29, 2016
Priority date	Dec 1, 2015
Publication date	Dec 20, 2018
Grant date	—

Abstract

The present invention provides a stator including magnets having six poles; a rotor disposed inside the stator and including thirteen slots; a coil wound around the slot; a rotary shaft coupled to the rotor; a commutator coupled to the rotary shaft and connected to the coil; and a plurality of brushes disposed to be pressed against the commutator and located to have an angular interval of 63° to 66° in the circumferential direction of the rotary shaft, thereby providing advantageous effects in that a current ripple is minimized and a torque is maximized.

First claim

1 . A motor comprising:
a rotary shaft; a rotor including a hole in which the rotary shaft is disposed; a stator disposed on an outer side of the rotor; a commutator including a hole in which the rotary shaft is disposed; and brushes configured to be in contact with the commutator, wherein the stator includes magnets having six poles, the rotor includes thirteen slots, the plurality of brushes are located to have an angular interval of 63° to 66° in a circumferential direction of the rotary shaft, and a width of the brush in the circumferential direction is a length of an arc of the brush corresponding to 22° to 26° about a center of the rotary shaft.

2 . The motor of claim 1 , wherein the stator includes three divided cores, each including a magnet having two poles.

3 . The motor of claim 2 , wherein an angular interval between reference lines connecting centers of contact areas between the brushes and the commutator and a center of the rotary shaft ranges from 63° to 66° in the circumferential direction.

4 . (canceled)

5 . The motor of claim 2 , wherein a width of a commutator piece in the circumferential direction is a length of an arc of the commutator piece corresponding to 27.7° about a center of the rotary shaft.

6 . The motor of claim 1 , further comprising a housing configured to accommodate the rotor and the stator,
wherein the housing includes a cover plate, and the brush is disposed on the cover plate.

7 . A vehicle comprising a motor,
wherein the motor includes: a rotary shaft; a rotor including a hole in which the rotary shaft is disposed; a stator disposed on an outer side of the rotor; a commutator including a hole in which the rotary shaft is disposed; and brushes configured to be in contact with the commutator, wherein the stator includes magnets having six poles, the rotor includes thirteen slots, the plurality of brushes are located to have an angular interval of 63° to 66° in a circumferential direction of the rotary shaft, and a width of the brush in the circumferential direction is a length of an arc of the brush corresponding to 22° to 26° about a center of the rotary shaft.

8 . A motor comprising:
a rotary shaft; a rotor including a hole in which the rotary shaft is disposed; a stator disposed on an outer side of the rotor; a commutator including a hole in which the rotary shaft is disposed; and brushes configured to be in contact with the commutator, wherein the stator includes magnets having six poles, the rotor includes thirteen slots, the plurality of brushes are located to have an angular interval of 63° to 66° in a circumferential direction of the rotary shaft, and
a width of the brush ranges from 3.7 mm to 4.4 mm.

Assignees

• Lg Innotek Co Ltd

Inventors

• Kim Jae Young
• Kim Hong Hyoun

Classifications

• H02K1/17

  Stator cores with permanent magnets · CPC title

• H01R39/18

  Contacts for co-operation with commutator or slip-ring, e.g. contact brush · CPC title

• H02K13/10 Primary

  Arrangements of brushes or commutators specially adapted for improving commutation · CPC title

• H02K2213/03

  Machines characterised by numerical values, ranges, mathematical expressions or similar information · CPC title

• H02K1/24

  Rotor cores with salient poles {; Variable reluctance rotors} · CPC title