A novel axial magnetic field motor rotor magnetic steel structure

Abstract

The utility model provides a novel axial magnetic field motor rotor magnetic steel structure, including rotor disc, the outside wall of rotor disc is equipped with the mounting groove, the inside of mounting groove is provided with magnetic steel subassembly, the magnetic steel subassembly includes first magnetic steel, first reinforcing rib, two limit blocks, two bosses, second magnetic steel, second reinforcing rib, screw hole, limit slot and flow guide inclined plane, first reinforcing rib fixed connection is in the front surface of first magnetic steel. The utility model can form an air flow channel between first magnetic steel and second magnetic steel under the cooperation of first reinforcing rib and second reinforcing rib, when rotor structure high -speed rotates, air flows from the air flow channel, can export the heat in the magnetic steel structure, avoids the demagnetization situation of magnetic steel structure in high temperature environment, and then guarantees the performance of motor.

Description

Technical Field

[0001] This utility model relates to a magnet structure, specifically a novel rotor magnet structure for an axial magnetic field motor, belonging to the technical field of axial magnetic field motors. Background Technology

[0002] The rotor structure of an axial field motor mainly consists of a rotor core, magnets (permanent magnets), and a rotor support. Its function is to generate a constant magnetic field through the magnets, which interacts with the rotating magnetic field generated by the stator windings to drive the rotor to rotate and thus output mechanical torque. In an axial field motor, the magnets are the core functional components. After being magnetized, the magnets generate a constant magnetic field, which interacts with the alternating magnetic field formed by the energized stator windings to drive the rotor to rotate and realize the electromechanical energy conversion.

[0003] In existing technologies, magnets generally adopt an integrated structure. Since integrated magnets lack effective heat dissipation channels, heat accumulates inside the magnets during motor operation and is difficult to release. Under high temperature conditions, the magnets are prone to irreversible demagnetization, which in turn affects the motor performance. Therefore, a novel axial magnetic field motor rotor magnet structure is proposed. Utility Model Content

[0004] In view of this, the present invention provides a novel rotor magnet structure for an axial magnetic field motor to solve or alleviate the technical problems existing in the prior art, and at least provides a beneficial alternative.

[0005] The technical solution of this utility model embodiment is implemented as follows: a novel axial magnetic field motor rotor magnet structure includes a rotor disk, an installation groove is provided on the outer side wall of the rotor disk, and a magnet assembly is provided inside the installation groove. The magnet assembly includes a first magnet, a first reinforcing rib, two limiting blocks, two bosses, a second magnet, a second reinforcing rib, a threaded hole, a limiting groove, and a flow guiding slope.

[0006] The first reinforcing rib is fixedly connected to the front surface of the first magnet. The two bosses are symmetrically fixedly connected to the top and bottom of the first magnet. The two limiting blocks are symmetrically fixedly connected to the lower surface of the bosses. The bosses have mounting holes inside, and bolts are installed inside the mounting holes. The second reinforcing rib is fixedly connected to the rear surface of the second magnet. The threaded holes are opened on the upper and lower surfaces of the second magnet. The limiting grooves are symmetrically opened on the upper surface of the second magnet. The guide slopes are symmetrically opened on both sides of the second magnet.

[0007] More preferably, the threaded hole communicates with the mounting hole, and the bolt is threaded to the inner wall of the threaded hole.

[0008] More preferably, the outer wall of the second magnet is attached to the opposite surfaces of the two protrusions, and the limiting block is slidably connected to the inner wall of the limiting groove.

[0009] More preferably, the first reinforcing rib is attached to the rear surface of the second magnet, and the second reinforcing rib is attached to the front surface of the first magnet.

[0010] More preferably, the first reinforcing rib and the second reinforcing rib are arranged alternately.

[0011] More preferably, the first magnet is fixedly connected to the inner sidewall of the mounting groove.

[0012] More preferably, the rear surface of the second magnet is in the same plane as the rotor disk.

[0013] More preferably, a rotor shaft is fixedly connected inside the rotor disk.

[0014] The present invention has the following advantages due to the adoption of the above technical solution:

[0015] This invention employs a split magnet structure. The first reinforcing rib and boss enhance the rigidity of the first magnet, while the second reinforcing rib enhances the rigidity of the second magnet. This prevents localized stress concentration in the magnets during motor operation, which could lead to internal cracking. Furthermore, the cooperation of the first and second reinforcing ribs creates an airflow channel between the first and second magnets. When the rotor rotates at high speed, air flows through this channel, dissipating heat from the magnet structure and preventing demagnetization in high-temperature environments, thus ensuring motor performance.

[0016] The above overview is for illustrative purposes only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments, and features described above, further aspects, embodiments, and features of the present invention will become readily apparent from the accompanying drawings and the following detailed description. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is an overall structural diagram of the present invention;

[0019] Figure 2 This is a structural diagram of the rotor disk of this utility model;

[0020] Figure 3 This is a structural diagram of the magnet assembly of this utility model;

[0021] Figure 4 This is an exploded view of the magnetic steel assembly structure of this utility model;

[0022] Figure 5 This is a schematic diagram of the second magnet structure of this utility model.

[0023] Reference numerals: 101, magnet assembly; 11, first magnet; 12, first reinforcing rib; 13, limiting block; 14, boss; 15, mounting hole; 16, bolt; 17, second magnet; 18, second reinforcing rib; 19, threaded hole; 20, limiting groove; 21, guide slope; 31, rotor disk; 32, rotor shaft; 33, mounting groove. Detailed Implementation

[0024] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of this invention. Therefore, the drawings and description are considered exemplary in nature and not restrictive.

[0025] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0026] like Figures 1-5 As shown, this utility model embodiment provides a novel axial magnetic field motor rotor magnet structure, including a rotor disk 31. The outer side wall of the rotor disk 31 is provided with an installation groove 33. A magnet assembly 101 is provided inside the installation groove 33. The magnet assembly 101 includes a first magnet 11, a first reinforcing rib 12, two limiting blocks 13, two bosses 14, a second magnet 17, a second reinforcing rib 18, a threaded hole 19, a limiting groove 20, and a flow guiding slope 21.

[0027] The first reinforcing rib 12 is fixedly connected to the front surface of the first magnet 11, the two bosses 14 are symmetrically fixedly connected to the top and bottom of the first magnet 11, and the two limiting blocks 13 are symmetrically fixedly connected to the lower surface of the bosses 14. The first reinforcing rib 12, the bosses 14 and the limiting blocks 13 are an integral structure. The rigidity of the first magnet 11 can be enhanced by the first reinforcing rib 12 and the bosses 14 to avoid the situation where the magnet is cracked due to local stress concentration during motor operation.

[0028] The second reinforcing rib 18 is fixedly connected to the rear surface of the second magnet 17. The threaded hole 19 is opened on the upper and lower surfaces of the second magnet 17. The limiting groove 20 is symmetrically opened on the upper surface of the second magnet 17. The guide slope 21 is symmetrically opened on both sides of the second magnet 17. The second magnet 17 and the second reinforcing rib 18 are an integral structure. The rigidity of the second magnet 17 can be enhanced by the second reinforcing rib 18.

[0029] In one embodiment, the boss 14 has a mounting hole 15 inside, and a bolt 16 is provided inside the mounting hole 15. A threaded hole 19 communicates with the mounting hole 15, and the bolt 16 is threaded to the inner sidewall of the threaded hole 19. Thus, the first magnet 11 and the second magnet 17 can be fixedly connected by the bolt 16 to form a complete axial magnetic field motor rotor magnet structure.

[0030] In one embodiment, the outer sidewall of the second magnet 17 is attached to the opposite surfaces of the two bosses 14, and the limiting block 13 is slidably connected to the inner sidewall of the limiting groove 20. Through the cooperation of the limiting block 13 and the limiting groove 20, the second magnet 17 can be easily connected and installed with the first magnet 11. The bosses 14 can limit the position of the second magnet 17.

[0031] In one embodiment, the first reinforcing rib 12 is attached to the rear surface of the second magnet 17, and the second reinforcing rib 18 is attached to the front surface of the first magnet 11. The first reinforcing rib 12 and the second reinforcing rib 18 are arranged alternately, thereby forming an air flow channel between the first magnet 11 and the second magnet 17 through the first reinforcing rib 12 and the second reinforcing rib 18. When the rotor structure rotates at high speed, air flows through the air flow channel, which can dissipate the heat in the magnet structure and prevent the magnet structure from demagnetizing in a high-temperature environment, thereby ensuring the performance of the motor.

[0032] In one embodiment, the first magnet 11 is fixedly connected to the inner wall of the mounting groove 33, thereby connecting the magnet assembly 101 to the rotor structure.

[0033] In one embodiment, the rear surface of the second magnet 17 is on the same plane as the rotor disk 31. When the rotor disk 31 rotates at high speed, air enters between the first magnet 11 and the second magnet 17 under the guiding effect of the guide slope 21.

[0034] In one embodiment, a rotor shaft 32 is fixedly connected inside the rotor disk 31. When the rotor disk 31 rotates, it drives the rotor shaft 32, thereby realizing the transmission of power.

[0035] When this utility model is in operation: the second magnet 17 is connected to the first magnet 11, the limiting block 13 is connected to the limiting groove 20, the first magnet 11 is located in the two bosses 14, the first reinforcing rib 12 is in contact with the second magnet 17, the second reinforcing rib 18 is in contact with the first magnet 11, and then the first magnet 11 and the second magnet 17 are connected by bolts 16, and the first magnet 11 is bonded and fixed inside the mounting groove 33. When the axial magnetic field motor is working, the rotor disk 31 rotates at high speed. At this time, under the guiding effect of the guiding slope 21, air enters between the first magnet 11 and the second magnet 17, thereby realizing heat dissipation of the magnet structure.

[0036] Compared to existing technologies, this invention employs a split magnet structure. The first reinforcing rib 12 and the boss 14 enhance the rigidity of the first magnet 11, while the second reinforcing rib 18 enhances the rigidity of the second magnet 17. This prevents localized stress concentration in the magnets during motor operation, which could lead to internal cracking. Furthermore, the cooperation of the first reinforcing rib 12 and the second reinforcing rib 18 forms an airflow channel between the first magnet 11 and the second magnet 17. When the rotor rotates at high speed, air flows through this channel, dissipating heat from the magnet structure and preventing demagnetization in high-temperature environments, thus ensuring motor performance.

[0037] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any person skilled in the art can easily conceive of various variations or substitutions within the technical scope disclosed in this utility model, and these should all be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A novel rotor magnet structure for an axial magnetic field motor, comprising a rotor disk (31), characterized in that: The outer side wall of the rotor disk (31) is provided with an installation groove (33), and a magnet assembly (101) is provided inside the installation groove (33). The magnet assembly (101) includes a first magnet (11), a first reinforcing rib (12), two limiting blocks (13), two bosses (14), a second magnet (17), a second reinforcing rib (18), a threaded hole (19), a limiting groove (20), and a guide slope (21). The first reinforcing rib (12) is fixedly connected to the front surface of the first magnet (11). The two bosses (14) are symmetrically fixedly connected to the top and bottom of the first magnet (11). The two limiting blocks (13) are symmetrically fixedly connected to the lower surface of the bosses (14). The bosses (14) have mounting holes (15) inside. The mounting holes (15) are provided with bolts (16). The second reinforcing rib (18) is fixedly connected to the rear surface of the second magnet (17). The threaded holes (19) are opened on the upper and lower surfaces of the second magnet (17). The limiting grooves (20) are symmetrically opened on the upper surface of the second magnet (17). The guide slopes (21) are symmetrically opened on both sides of the second magnet (17).

2. The novel axial magnetic field motor rotor magnet structure according to claim 1, characterized in that: The threaded hole (19) is connected to the mounting hole (15), and the bolt (16) is threaded to the inner wall of the threaded hole (19).

3. The novel axial magnetic field motor rotor magnet structure according to claim 2, characterized in that: The outer sidewall of the second magnet (17) is attached to the opposite surfaces of the two protrusions (14), and the limiting block (13) is slidably connected to the inner sidewall of the limiting groove (20).

4. The novel axial magnetic field motor rotor magnet structure according to claim 3, characterized in that: The first reinforcing rib (12) is attached to the rear surface of the second magnet (17), and the second reinforcing rib (18) is attached to the front surface of the first magnet (11).

5. The novel axial magnetic field motor rotor magnet structure according to claim 4, characterized in that: The first reinforcing rib (12) and the second reinforcing rib (18) are arranged alternately.

6. The novel axial magnetic field motor rotor magnet structure according to claim 1, characterized in that: The first magnet (11) is fixedly connected to the inner wall of the mounting groove (33).

7. The novel axial magnetic field motor rotor magnet structure according to claim 6, characterized in that: The rear surface of the second magnet (17) is in the same plane as the rotor disk (31).

8. The novel axial magnetic field motor rotor magnet structure according to claim 7, characterized in that: The rotor shaft (32) is fixedly connected inside the rotor disk (31).

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