Title:
MOTOR
Document Type and Number:
Japanese Patent JP2019161758
Kind Code:
A
Abstract:
To provide a motor in which a magnet unit can be favorably rotated while the magnet unit to which a centrifugal force is being applied is appropriately held.SOLUTION: The motor includes a rotary shaft 10, a magnet unit 12 that is fixed to the rotary shaft and that is rotated together with the rotary shaft, and a coil unit 13 that faces the magnet unit in the axial direction of the rotary shaft. The magnet unit has a magnet ring 31 including a plurality of magnets arranged side by side in the circumferential direction of the rotary shaft, and a hold ring 32 provided on the outer circumferential side of the magnet ring so as to hold the magnet ring. The hold ring is formed by containing a composite material obtained by immersing resin in carbon fibers including a pitch-based carbon fiber and a PAN-based carbon fiber. The ratio of the pitch-based carbon fiber is larger than that of the PAN-based carbon fiber on an outer circumference-side portion, while the ratio of the PAN-based carbon fiber is larger than that of the pitch-based carbon fiber on an inner circumference-side portion.SELECTED DRAWING: Figure 2
Inventors:
INOMOTO MAKOTO
SHIMONO KODAI
OKABE RYOJI
SHIMONO KODAI
OKABE RYOJI
Application Number:
JP2018042414A
Publication Date:
September 19, 2019
Filing Date:
March 08, 2018
Export Citation:
Assignee:
MITSUBISHI HEAVY IND LTD
International Classes:
H02K1/28; H02K1/22; H02K1/27; H02K16/00; H02K21/24
Domestic Patent References:
| JPH0274142A | 1990-03-14 | |||
| JP2017163752A | 2017-09-14 | |||
| JP2015091202A | 2015-05-11 | |||
| JP2006087216A | 2006-03-30 | |||
| JPH0919093A | 1997-01-17 |
Foreign References:
| US5021698A | 1991-06-04 |
Attorney, Agent or Firm:
Sakai International Patent Office