Title:
MOTOR, ELECTRIC TOOL MOTOR, AND ELECTRIC TOOL
Document Type and Number:
WIPO Patent Application WO/2021/006079
Kind Code:
A1
Abstract:
The objective of the present invention is to provide a motor with which it is easy to manage a gap between a stator and a bearing holding portion. A motor 1 is provided with a stator 3, a rotor 2, and a bearing holding portion 52. The rotor 2 is disposed inward of the stator 3. Further, the rotor 2 rotates relative to the stator 3. The bearing holding portion 52 holds a bearing 7 of the rotor 2. The stator 3 is provided with a plurality of coils 31, a plurality of teeth 32, and a linking portion 33. With regard to the plurality of teeth 32, the plurality of coils 31 are disposed with insulators 5 interposed therebetween. The linking portion 33 is positioned on the rotor 2 side of the coils 31. Further, the linking portion 33 links at least some mutually adjacent teeth 32. The bearing holding portion 52 is positioned touching either the linking portion 33 or inner peripheral tip ends of the teeth 32, in a plane orthogonal to the direction X of the axis of rotation of the rotor 2.
Inventors:
NAKAMURA AKITO
Application Number:
PCT/JP2020/025387
Publication Date:
January 14, 2021
Filing Date:
June 26, 2020
Export Citation:
Assignee:
PANASONIC IP MAN CO LTD (JP)
International Classes:
H02K5/10; B25F5/00; H02K1/14; H02K1/18; H02K5/173
Foreign References:
| JPH02129149U | 1990-10-24 | |||
| JPH06205557A | 1994-07-22 | |||
| JP2019510456A | 2019-04-11 | |||
| JPH05137286A | 1993-06-01 | |||
| JP2018068069A | 2018-04-26 | |||
| JP2019037026A | 2019-03-07 |
Other References:
See also references of EP 3996254A4
Attorney, Agent or Firm:
HOKUTO PATENT ATTORNEYS OFFICE (JP)
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