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CN-224218262-U - Linear motor

CN224218262UCN 224218262 UCN224218262 UCN 224218262UCN-224218262-U

Abstract

The utility model discloses a linear motor, which relates to the technical field of motor manufacturing, wherein the linear motor comprises a shell, a stator and a rotor, the stator comprises a winding, the winding comprises a plurality of coils which are sequentially stacked and nested, the outer peripheral wall of the coil positioned at the outermost layer in each coil is abutted against the inner peripheral wall of the shell, the coil positioned at the innermost layer in each coil and the shell are enclosed to form a movement cavity, and the rotor is positioned in the movement cavity and is in sliding connection with the inner peripheral wall of the coil positioned at the innermost layer in each coil. In the technical scheme of the utility model, a plurality of coils which are stacked and nested form a winding, and magnetic fields generated by the coils jointly act on the mover after the power is applied, so that the mover can be subjected to the superposition of push-pull forces generated by the coils at the same time, and the push force output by the linear motor is increased.

Inventors

  • WANG JINHUA
  • Liao Xiangbo

Assignees

  • 东莞市景鸿科技有限公司

Dates

Publication Date
20260508
Application Date
20250416

Claims (10)

  1. 1. A linear motor (1000), characterized by comprising: a housing (1); A stator (2), wherein the stator (2) comprises a winding (21), the winding (21) comprises a plurality of coils which are sequentially stacked and nested, the outer peripheral wall of the coil positioned at the outermost layer of the coils is abutted against the inner peripheral wall of the shell (1), the coil positioned at the innermost layer of the coils and the shell (1) are enclosed to form a movement cavity (2 a), and The mover (3) is positioned in the motion cavity (2 a) and is in sliding connection with the inner peripheral wall of the coil positioned at the innermost layer in each coil.
  2. 2. The linear motor (1000) according to claim 1, wherein the winding (21) includes a first coil (211) and a second coil (212), an outer circumferential wall of the first coil (211) abuts against an inner circumferential wall of the housing (1), and the first coil (211) is sleeved on an outer circumferential wall of the second coil (212); Defining the wire diameter length of the first coil (211) as L 1 , the wire diameter length of the second coil (212) as L 2 , the section radius of the first coil (211) as R 1 and the section radius of the second coil (212) as R 2 , wherein L 1 :L 2 ＝R 1 2 :R 2 2 .
  3. 3. The linear motor (1000) according to claim 2, wherein the mover (3) comprises a magnetic ring (31) and a mover rod (32), the magnetic ring (31) is sleeved on the mover rod (32), and the outer peripheral wall of the magnetic ring (31) is slidably connected with the inner peripheral wall of the second coil (212).
  4. 4. A linear motor (1000) according to claim 3, wherein the mover rod (32) comprises a front rod (321) and a rear rod (322), the front rod (321) is inserted into the magnetic ring (31), and the rear rod (322) is inserted into one end of the magnetic ring (31) away from the front rod (321); Zhou Bitu of the front rod (321) is provided with a front-section ring (3211), zhou Bitu of the rear rod (322) is provided with a rear-section ring (3221), the front-section ring (3211) is abutted to the side wall of the magnetic ring (31) which is located at the front in the pushing-out direction of the rotor (3), and the rear-section ring (3221) is abutted to the side wall of the magnetic ring (31) which is located at the rear in the pushing-out direction of the rotor (3).
  5. 5. The linear motor (1000) of claim 4, wherein the linear motor (1000) further comprises two elastic members (4), wherein two ends of one elastic member (4) are respectively connected to the front rod (321) and the housing (1), and two ends of the other elastic member (4) are respectively connected to the rear rod (322) and the housing (1).
  6. 6. The linear motor (1000) according to claim 5, wherein a front ring groove (321 a) is formed on a peripheral wall of the front rod (321), a rear ring groove (322 a) is formed on a peripheral wall of the rear rod (322), one end of the elastic member (4) is connected to a side wall of the casing (1) which is forward in the pushing-out direction of the mover (3), the other end is sleeved in the front ring groove (321 a), one end of the other elastic member (4) is connected to a side wall of the casing (1) which is rearward in the pushing-out direction of the mover (3), and the other end is sleeved in the rear ring groove (322 a).
  7. 7. The linear motor (1000) according to any one of claims 1 to 6, wherein the stator (2) comprises two windings (21), the stator (2) further comprises a positioning ring (22), the positioning ring (22) is abutted against the inner wall of the housing (1), the two windings (21) are respectively connected to the front and rear ends of the positioning ring (22) along the pushing-out direction of the mover (3), and the mover (3) is slidably connected with the inner peripheral wall of the positioning ring (22).
  8. 8. The linear motor (1000) according to claim 7, wherein the positioning ring (22) and the housing (1) are surrounded to form two mounting grooves (1 a) distributed back and forth along the pushing-out direction of the mover (3), and the two windings (21) are respectively arranged in the two mounting grooves (1 a).
  9. 9. The linear motor (1000) according to claim 8, wherein one end of the positioning ring (22) away from the housing (1) extends along front and rear ends of the pushing direction of the mover (3) to form two stop portions (221), and each stop portion (221) abuts against one winding (21) to limit the winding (21) in the corresponding mounting groove (1 a).
  10. 10. The linear motor (1000) according to any one of claims 2 to 6, wherein the housing (1) comprises a barrel (11) and a gland (12), the gland (12) is detachably connected to the barrel (11), an outer peripheral wall of the first coil (211) abuts against an inner peripheral wall of the barrel (11), and the second coil (212) and the gland (12) enclose the movement cavity (2 a).

Description

Linear motor Technical Field The utility model relates to the technical field of motor manufacturing, in particular to a linear motor. Background The linear motor is a device for directly converting electric energy into linear motion mechanical energy, is used as a motor type of direct drive, and is widely applied to precision positioning, high-speed motion and automation equipment. The working principle is that electric energy is directly converted into linear motion through electromagnetic interaction between a rotor structure and a stator. The push-pull force of the conventional linear motor is weak, so that the linear motor cannot meet the requirements of high-load application scenes. Disclosure of utility model The utility model mainly aims to provide a linear motor, which aims to increase the thrust output by the linear motor. In order to achieve the above object, the present utility model provides a linear motor, comprising: A housing; A stator including a plurality of coils stacked and nested in sequence, wherein the outer peripheral wall of the coil positioned at the outermost layer in each coil is abutted against the inner peripheral wall of the shell, the coil positioned at the innermost layer in each coil and the shell enclose to form a movement cavity, and The mover is positioned in the motion cavity and is in sliding connection with the inner peripheral wall of the coil positioned at the innermost layer in each coil. In one embodiment, the winding comprises a first coil and a second coil, wherein the outer peripheral wall of the first coil is abutted against the inner peripheral wall of the shell, and the first coil is sleeved on the outer peripheral wall of the second coil; Defining the wire diameter length of the first coil as L 1, the wire diameter length of the second coil as L 2, the section radius of the first coil as R 1 and the section radius of the second coil as R 2, wherein L 1:L2＝R12:R22. In one embodiment, the rotor comprises a magnetic ring and a rotor rod, the magnetic ring is sleeved on the rotor rod, and the outer peripheral wall of the magnetic ring is in sliding connection with the inner peripheral wall of the second coil. In one embodiment, the mover rod comprises a front rod and a rear rod, the front rod is inserted into the magnetic ring, and the rear rod is inserted into one end of the magnetic ring far away from the front rod; The front rod Zhou Bitu is provided with a front section ring, the rear rod Zhou Bitu is provided with a rear section ring, the front section ring is abutted to the side wall of the magnetic ring, which is located in front of the pushing direction of the rotor, and the rear section ring is abutted to the side wall of the magnetic ring, which is located in rear of the pushing direction of the rotor. In an embodiment, the linear motor further includes two elastic members, wherein two ends of one elastic member are respectively connected to the front rod and the housing, and two ends of the other elastic member are respectively connected to the rear rod and the housing. In one embodiment, the peripheral wall of the front rod forms a front ring groove, the peripheral wall of the rear rod forms a rear ring groove, one end of the elastic piece is connected to the side wall of the shell, which is located in front of the pushing-out direction of the mover, the other end of the elastic piece is sleeved in the front ring groove, one end of the elastic piece is connected to the side wall of the shell, which is located in rear of the pushing-out direction of the mover, and the other end of the elastic piece is sleeved in the rear ring groove. In one embodiment, the stator comprises two windings, the stator further comprises a positioning ring, the positioning ring is abutted against the inner wall of the shell, the two windings are respectively connected to the front end and the rear end of the positioning ring along the pushing-out direction of the rotor, and the rotor is in sliding connection with the inner peripheral wall of the positioning ring. In an embodiment, the positioning ring and the housing enclose two mounting grooves distributed along the pushing-out direction of the mover, and the two windings are respectively arranged in the two mounting grooves. In an embodiment, one end of the positioning ring away from the housing extends along the front end and the rear end of the pushing direction of the mover to form two stop portions, and each stop portion is respectively abutted to one winding to limit the winding in the corresponding mounting groove. In one embodiment, the shell comprises a cylinder body and a gland, the gland is detachably connected to the cylinder body, the outer circumferential wall of the first coil is abutted against the inner circumferential wall of the cylinder body, and the second coil and the gland are enclosed to form the movement cavity. In the technical scheme, the linear motor comprises a shell, a stator and a rotor, whe