Title:
電動機
Document Type and Number:
Japanese Patent JP6654551
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a motor comprising an armature teeth shape capable of securing a coil arrangement space as wide as possible without enlarging the motor.SOLUTION: A motor comprises: a field magnet 10 including a permanent magnet 13; and an armature 20 including an armature core 21 including a cylindrical back yoke 22 and multiple teeth 23, and multiple coils 24 that are wound around each of the teeth 23. The teeth 23 include a root portion 23A in the vicinity of the back yoke and a tip portion 23B in the vicinity of a protruding end. A cross-sectional area A1 of the root portion 23A is substantially equal to a cross-sectional area A2 of the tip portion 23B. On the other hand, the root portion 23A has a shape increasing an inner diameter of the coil 24 in a circumferential direction (θ direction) of the back yoke 22 and decreasing the inner diameter of the coil in an axial direction (z direction) in relative to the tip portion 23B.SELECTED DRAWING: Figure 9
Inventors:
Shunpei Hayashi
Application Number:
JP2016230474A
Publication Date:
February 26, 2020
Filing Date:
November 28, 2016
Export Citation:
Assignee:
KABUSHIKI KAISHA KOBE SEIKO SHO
International Classes:
H02K1/14; H02K41/03
Domestic Patent References:
| JP2006158176A | ||||
| JP2014504129A | ||||
| JP2007074847A |
Attorney, Agent or Firm:
Etsushi Kotani
Masataka Otani
Haruhiro Hirata
Masataka Otani
Haruhiro Hirata