Title:
MOTOR, BLOWER, AND AIR CONDITIONER
Document Type and Number:
WIPO Patent Application WO/2022/065306
Kind Code:
A1
Abstract:
Provided is a motor which can inhibit a swelling part caused by residual gas from being formed on the inner peripheral surface of a rotor molded by resin casting. This motor (10) comprises a rotor (20) molded by resin casting, and a stator (30) disposed on the inner side of the rotor (20). The rotor (20) has a cylindrical part (21) on which a plurality of magnets (22) are arranged side by side in the circumferential direction. The magnets (22) are exposed at an open end (21a) side, which is one end of the cylindrical part (21) in the axial direction. The cylindrical part (21) has an inner resin (23), which is a resin positioned on the inner sides of the magnets (22) in the radial direction of the cylindrical part (21). The inner resin (23) has a first resin portion (23a) and a second resin portion (23b) closer to the open end (21a) than the first resin portion (23a) in the axial direction. The cross-sectional area of the second resin portion (23b) perpendicular to the axial direction is smaller than the cross-sectional area of the first resin portion (23a) perpendicular to the axial direction.
Inventors:
TAKAYAMA YOSHINORI
MATSUSHITA NORIMASA
MATSUSHITA NORIMASA
Application Number:
PCT/JP2021/034584
Publication Date:
March 31, 2022
Filing Date:
September 21, 2021
Export Citation:
Assignee:
DAIKIN IND LTD (JP)
International Classes:
H02K1/27; F04D29/00; F24F1/0029; H02K7/14; H02K15/02; H02K15/03; H02K15/12
Domestic Patent References:
| WO2017183378A1 | 2017-10-26 |
Foreign References:
| JP2008099520A | 2008-04-24 | |||
| JP2008199697A | 2008-08-28 | |||
| JP2008259359A | 2008-10-23 |
Other References:
See also references of EP 4220898A4
Attorney, Agent or Firm:
SHINJYU GLOBAL IP (JP)
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