Title:
LINEAR ELECTRIC MOTOR
Document Type and Number:
WIPO Patent Application WO/2022/047893
Kind Code:
A1
Abstract:
A linear electric motor, comprising a housing (1), a primary (3), and a secondary (7), which is spaced apart from the primary (3) to form an air gap (5), wherein the primary (3) comprises an iron core (31) and a winding (33); the iron core (31) comprises a yoke portion (311) and a plurality of tooth portions (313); the tooth portions (313) are provided with permanent magnets (35) in an embedded manner, and the magnetic poles of every two adjacent permanent magnets (35) are opposite; each permanent magnet (35) comprises a first permanent magnet (351), a second permanent magnet (353), a third permanent magnet (355) and a fourth permanent magnet (357), which are arranged in a W-shaped structure; the first permanent magnet (351) and the second permanent magnet (353) are arranged at a first included angle and are symmetrical with respect to a first angular bisector (a) of the first included angle, and the first angular bisector (a) extends from the vertex (o) of the first included angle to the secondary (7) and is perpendicular to a plane where the secondary (7) is located; and the magnetic poles of the sides of the first permanent magnet (351), the second permanent magnet (353), the third permanent magnet (355) and the fourth permanent magnet (357) that are close to the secondary (7) are the same. According to the linear electric motor, the volumes of the embedded permanent magnets (35) can be effectively increased, such that a magnetic field on the side of the air gap (5) is significantly increased, thereby increasing the thrust density of the linear electric motor.
Inventors:
SHI WEILING (CN)
GUO SHUN (CN)
WANG HONGXING (CN)
GUO SHUN (CN)
WANG HONGXING (CN)
Application Number:
PCT/CN2020/120695
Publication Date:
March 10, 2022
Filing Date:
October 13, 2020
Export Citation:
Assignee:
AAC ACOUSTIC TECH SHENZHEN CO LTD (CN)
AAC TECH NANJING CO LTD (CN)
AAC TECH NANJING CO LTD (CN)
International Classes:
H02K1/06; H02K41/02; H02K3/28
Foreign References:
| CN208508761U | 2019-02-15 | |||
| CN101783573A | 2010-07-21 | |||
| CN101752922A | 2010-06-23 | |||
| CN101789675A | 2010-07-28 | |||
| CN104319976A | 2015-01-28 | |||
| CN201122886Y | 2008-09-24 | |||
| US20190036437A1 | 2019-01-31 |
Attorney, Agent or Firm:
SHENZHEN ZICHEN INTELLECTUAL PROPERTY AGENCY LIMITED (CN)
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