Coreless amorphous material permanent magnet motor

Abstract

The utility model relates to a coreless amorphous material permanent magnet motor, comprising a housing and a rotating shaft in shaft connection with the center of the housing, the rotating shaft is fixedly connected with two rotor discs, the housing is fixedly connected with a stator located between the two rotor discs, one side of the rotor discs close to the stator is provided with a rotor ring, and the rotor disc is fixedly connected with the stator. A plurality of magnets which are distributed in the circumferential direction are installed on the inner ring of the rotor ring, the stator is a coreless coil winding and comprises a disc body made of an amorphous material, a plurality of coils which are tightly wound and a winding lead, the magnetic permeability of the amorphous material is far larger than that of a silicon steel sheet, and the electric conductivity is low. Therefore, under the same power, the size of the motor provided by the utility model is smaller than that of a motor manufactured by a conventional method, the thickness and the diameter of the motor are reduced through structural optimization, and the motor is simple in structure and convenient to process.

Description

Technical Field

[0001] The utility model relates to the technical field of motors, in particular to an iron-coreless amorphous material permanent magnet motor. Background Art

[0002] At present, disc-type permanent magnet motors with an axial magnetic circuit having an outer rotor structure with two permanent magnet rotors and a stator are more common. This type of motor has two permanent magnet rotors, one on each side of the stator disc, with coils mounted on the stator disc and magnets mounted on the permanent magnet rotor. For example, the utility model with announcement number CN102655361A discloses a disc-type parallel-moving permanent magnet generator. However, in similar structures, the fixation of the stator disc, the fixation of the rotor to the rotating shaft, and the fixation of the magnets all lead to an increase in the thickness of the motor, making it impossible to achieve a very thin motor structure. Utility Model Content

[0003] The utility model aims to solve the deficiencies of the prior art and provides an iron-coreless amorphous material permanent magnet motor.

[0004] The utility model is realized by the following technical solution, which provides an ironless amorphous material permanent magnet motor, including a housing and a rotating shaft connected to the center of the housing, two rotor disks fixedly connected to the rotating shaft, a stator located between the two rotor disks fixedly connected to the housing, a rotor ring is installed on the side of the rotor disk close to the stator, and the inner ring of the rotor ring is equipped with multiple magnets arranged circumferentially.

[0005] In this solution, the stator is fixed to the housing for stability, while the two rotor disks are fixed to the shaft for rotation. The stator coils interact with the magnets on the rotor disks to achieve rotation. A rotor ring secures the multiple magnets within the inner ring, preventing them from moving outward due to centrifugal force during high-speed rotation. This rotor ring secures the magnets while reducing the motor's thickness and improving installation convenience.

[0006] As an optimization, a connecting ring is fixed to the outer ring of the rotating shaft. An inner raised ring is fixed to the side of each rotor disc that is closest to each other. The two inner raised rings fit together, and the two rotor discs are bolted to the side of the connecting ring. In this solution, the two inner raised rings fit together, thus achieving a tight fit between the two rotor discs. The two rotor rings form an annular space on the outer rings of the inner raised rings, and the stator is located in this annular space. The rotor discs are bolted to the side of the connecting rings, thus achieving a fixed connection between the rotor discs and the rotating shaft.

[0007] As an optimization, the rotating shaft is a hollow shaft and a keyway is provided in the inner hole, so that the motor is a hollow shaft motor.

[0008] As an optimization, the housing includes a coaxially arranged upper cover and lower cover, which are fixedly connected by bolts, and the ends of the rotating shaft are connected to the upper cover and lower cover respectively by bearings. The upper cover and lower cover in this solution are detachable, thereby realizing the disassembly and assembly of the internal components of the housing.

[0009] As an optimization, the outer ring of the stator is clamped between the upper cover and the lower cover. The stator is clamped by the upper cover and the lower cover to prevent it from moving.

[0010] As an optimization, the outer ring of the stator is provided with a protrusion, and the housing is provided with a notch adapted to the protrusion. The protrusion in this solution is inserted into the notch, thereby preventing the stator from rotating.

[0011] As an optimization, the magnets are fan-shaped, and magnet separators are fixedly attached to the rotor disk and located between adjacent magnets. The magnet separators in this solution separate and fix adjacent magnets to prevent them from moving.

[0012] The beneficial effects of the present invention are as follows: the present invention is an iron-coreless amorphous material permanent magnet motor, which uses a stator with an iron-core coil winding. The stator includes a disk made of amorphous material, a plurality of tightly wound coils and winding leads. Since the magnetic permeability of amorphous material is much greater than that of silicon steel sheet and the electrical conductivity is low, the motor of the present invention is smaller in size than a motor made by conventional methods under the same power, and through structural optimization, the thickness and diameter of the motor are reduced, and the structure is simple and the processing is convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is an explosion diagram of the utility model;

[0014] Figure 2 This is a cross-sectional view of the utility model;

[0015] Figure 3 This is a cross-sectional view of the central axis of the utility model;

[0016] Figure 4 This is a schematic diagram of the rotor disk structure of the utility model;

[0017] Figure 5 This is a schematic structural diagram of the magnet and rotor ring of the utility model;

[0018] As shown in the figure:

[0019] 1. Rotor disk, 2. Magnet, 3. Rotor ring, 4. Stator, 5. Upper cover, 6. Lower cover, 7. Rotating shaft, 8. Bearing, 9. Protrusion, 10. Connecting ring, 11. Magnet separator, 12. Magnet inner ring, 13. Inner protrusion ring. DETAILED DESCRIPTION

[0020] In order to clearly illustrate the technical features of this solution, this solution is described below through specific implementation methods.

[0021] like Figures 1 to 5 As shown, the utility model is an ironless amorphous material permanent magnet motor, including a housing and a rotating shaft 7 axially connected to the center of the housing. The housing includes a coaxially arranged upper cover 5 and a lower cover 6. The upper cover 5 and the lower cover 6 are both annular parts. The upper cover 5 and the lower cover 6 are fixed by bolts, so that the upper cover 5 and the lower cover 6 are fixed by a circle of bolts. A circular cavity is formed between the upper cover 5 and the lower cover 6, and the rotor disk 1 and the stator 4 are installed in the cavity.

[0022] Both ends of the rotating shaft 7 pass through the center holes of the upper cover 5 and the lower cover 6 to output power outward. The center holes of the upper cover 5 and the lower cover 6 are both installed with bearings 8, and the two ends of the rotating shaft 7 are respectively connected to the upper cover 5 and the lower cover 6 through the bearings 8.

[0023] The rotating shaft 7 is a hollow shaft and a keyway is provided in the inner hole.

[0024] Two rotor disks 1 are fixed to the rotating shaft 7, and a stator 4 located between the two rotor disks 1 is fixed to the housing. The stator 4 is an iron-coreless coil winding, which includes a disk body made of amorphous material, multiple tightly wound coils and winding leads. The magnetic permeability of amorphous material is much greater than that of silicon steel sheet, and the electrical conductivity is low. Therefore, under the same power, the volume of the motor is smaller than that made by conventional methods.

[0025] The stator 4 is an annular member, and the outer ring of the stator 4 is clamped between the upper cover 5 and the lower cover 6 to prevent axial movement. The outer ring of the stator 4 is provided with a protrusion 9, and a notch adapted to the protrusion is opened on the shell to prevent the stator 4 from rotating. The notch in this embodiment is provided on the outer ring of the upper cover 5 and is a rectangular notch.

[0026] A connecting ring 10 is fixed to the outer ring of the rotating shaft 7. This connecting ring 10 and the rotating shaft 7 are integrally machined, and is provided with multiple threaded holes arranged circumferentially. An inner raised ring 13 is fixed to the adjacent sides of the two rotor discs 1. This inner raised ring 13 and the rotor discs 1 are integrally formed, fitting snugly together, and the two rotor discs 1 are bolted to the sides of the connecting ring 10. The two rotor rings form an annular space on the outer rings of the inner raised rings, within which the stator is located. Bolts secure the rotor discs to the threaded holes on the sides of the connecting rings, thus achieving a fixed connection between the rotor discs and the rotating shaft.

[0027] The connecting ring 10 is located between the rotor disk 1 and the upper cover 5 . The upper cover 5 is provided with a countersunk hole for accommodating the connecting ring 10 , thereby reducing the thickness of the entire motor.

[0028] A rotor ring 3 is installed on the side of the rotor disk 1 close to the stator. The rotor ring 3 is annular and coaxial with the rotor disk 1. The outer ring diameter of the rotor ring 3 is equal to or close to the diameter of the rotor disk 1. The inner ring of the rotor ring 3 is equipped with multiple magnets 2 arranged circumferentially.

[0029] like Figure 4 、 5 As shown, the magnets 2 are fan-shaped, and the rotor disk is fixed with magnet separators 11 located between adjacent magnets 2. The magnet separators 11 and the rotor disk 1 are integrally formed.

[0030] Specifically, the magnet 2 is fan-shaped, with its inner curved surface affixed to the outer ring of the inner raised ring 13, its outer curved surface affixed to the inner ring of the rotor ring 3, and its two sides affixed to the magnet separators 11. The magnet and rotor disk 1 can also be fixed by gluing to prevent them from falling out.

[0031] Of course, the above description is not limited to the above examples. The technical features not described in the present invention can be achieved through or by adopting existing technologies, and will not be repeated here. The above embodiments and drawings are only used to illustrate the technical solution of the present invention and are not limitations of the present invention. The present invention is described in detail with reference to the preferred implementation methods. Ordinary technicians in this field should understand that the changes, modifications, additions or substitutions made by ordinary technicians in this technical field within the essential scope of the present invention do not depart from the purpose of the present invention and should also fall within the scope of protection of the claims of the present invention.

Claims

1. An ironless amorphous material permanent magnet motor, characterized by: The invention comprises a housing and a rotating shaft (7) connected to the center of the housing, two rotor disks (1) are fixedly connected to the rotating shaft (7), a stator (4) located between the two rotor disks (1) is fixedly connected to the housing, a rotor ring (3) is installed on the side of the rotor disk (1) close to the stator, and a plurality of magnets (2) arranged circumferentially are installed on the inner ring of the rotor ring (3); The outer ring of the rotating shaft (7) is fixedly connected to a connecting ring (10), and the sides of the two rotor discs (1) close to each other are fixedly connected to inner protruding rings (13), the two inner protruding rings (13) are fitted together, and the two rotor discs (1) are fixed to the side of the connecting ring (10) by bolts; The stator (4) is a coreless coil winding, and the stator (4) includes a disk made of an amorphous material, a plurality of tightly wound coils and winding leads; Two rotor discs form an annular space on the outer ring of the inner raised ring. The stator is located in the annular space. The rotor discs are fixed to the threaded holes on the side of the connecting ring by bolts.

2. The ironless amorphous material permanent magnet motor according to claim 1, characterized in that: The rotating shaft (7) is a hollow shaft and a keyway is provided in the inner hole.

3. The ironless amorphous material permanent magnet motor according to claim 1, characterized in that: The housing comprises an upper cover (5) and a lower cover (6) which are coaxially arranged. The upper cover (5) and the lower cover (6) are fixedly connected by bolts. The two ends of the rotating shaft (7) are respectively connected to the upper cover (5) and the lower cover (6) via bearings (8).

4. The ironless amorphous material permanent magnet motor according to claim 3, characterized in that: The outer ring of the stator (4) is clamped between the upper cover (5) and the lower cover (6).

5. The ironless amorphous material permanent magnet motor according to claim 1, characterized in that: The outer ring of the stator (4) is provided with a protrusion (9), and the housing is provided with a notch adapted to the protrusion.

6. The ironless amorphous material permanent magnet motor according to claim 1, characterized in that: The magnets (2) are fan-shaped, and magnet separators (11) located between adjacent magnets (2) are fixedly connected to the rotor disk.

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