Axial flux motor rotor and disc type motor

Abstract

The axial magnetic flux motor rotor comprises a rotor end cover, a rotor iron core and a plurality of magnetic shoes, the rotor iron core comprises a plurality of iron core blocks, and the inner side and the outer side of each iron core block are respectively provided with a first storage cavity between an inner annular protrusion and an outer annular protrusion. Second storage cavities are formed in the positions, between the inner annular protrusions and the outer annular protrusions, of the inner sides and the outer sides of the magnetic shoes, the second storage cavities are communicated with the first storage cavities, after adhesives are injected into the first storage cavities and the second storage cavities to be solidified, the magnetic shoes and the iron core blocks are fixed to the rotor end cover, and through cooperation of the inner annular protrusions, the outer annular protrusions and the adhesives, the magnetic shoes and the iron core blocks are fixed to the rotor end cover. Due to the fact that the inner annular protrusions and the outer annular protrusions are arranged, the iron core blocks and the magnetic shoes are provided with rigid limiting structures in all directions, the structural strength is multiplied, after the rotor is subjected to overload impact force through radial limiting formed between the inner annular protrusions and the outer annular protrusions, the magnetic shoes and the iron core blocks fall off and cannot fly out, and the rotor is reasonable in structural arrangement, safe and reliable.

Description

Technical Field

[0001] The utility model relates to an axial flux motor rotor and a disc motor. Background Art

[0002] Other axial flux motor rotors on the market are all adhesive surface-mounted magnetic tile structures. The biggest disadvantage of conventional surface-mounted rotor magnetic tiles and iron core structures is that the adhesive fails and is easy to fall off after the impact force exceeds the bonding force, and the magnetic tiles and iron core are thrown out. The thrown-out parts can easily cause harm and damage to operators or objects around the rotating parts. Summary of the invention

[0003] The utility model aims to provide an axial flux motor rotor and a motor using the same, so as to solve the technical problems in the prior art that the adhesive fails and is easy to fall off after being subjected to impact force exceeding the bonding force, and the magnetic tiles and iron core are thrown out, and the thrown-out parts are very likely to cause harm and damage to operators or objects around the rotating parts.

[0004] The technical solution of the utility model is achieved in this way:

[0005] The utility model provides an axial flux motor rotor, characterized in that it comprises a rotor end cover, a rotor core and a plurality of magnetic tiles, the rotor core comprises a plurality of core blocks, an inner annular protrusion and an outer annular protrusion are respectively protruded at the inner and outer edges of the bottom of the rotor end cover, a receiving groove is formed between the inner annular protrusion and the outer annular protrusion, a plurality of spaced magnetic tile positioning grooves and mounting bosses are respectively arranged in the receiving groove, the magnetic tiles are installed in the magnetic tile positioning grooves, the core blocks are installed on the end faces of the mounting bosses, a first storage cavity is respectively arranged between the inner annular protrusion and the outer annular protrusion on the inner and outer sides of the core blocks, a second storage cavity is respectively arranged between the inner annular protrusion and the outer annular protrusion on the inner and outer sides of the magnetic tiles, the second storage cavity is communicated with the first storage cavity, and after the adhesive is injected into the first storage cavity and the second storage cavity and solidified, the magnetic tiles and the core blocks are fixed on the rotor end cover.

[0006] The bottom surface of the core block described above is provided with a plurality of adhesive storage grooves, the bottom surface of the core block abuts against the end surface of the mounting boss, the first storage cavity is connected with the adhesive storage groove, when the adhesive is injected into the first storage cavity, the adhesive penetrates into the adhesive storage groove and solidifies.

[0007] The top of each core block mentioned above is chamfered at the corner position close to the magnetic tile, or the top surface of each core block is an arc surface.

[0008] The chamfer mentioned above is an oblique angle or an arc angle.

[0009] The iron core block described above is made of silicon steel sheet or composite material or SMC material.

[0010] The magnetic tiles mentioned above are made of neodymium iron boron or ferrite materials.

[0011] A disc-type motor comprises a stator assembly and a rotor assembly, wherein the rotor assembly adopts the above-mentioned axial flux motor rotor.

[0012] Compared with the prior art, the utility model has the following advantages:

[0013] 1. The utility model comprises a rotor end cover, a rotor core and a plurality of magnetic tiles. The rotor core comprises a plurality of core blocks. An inner annular protrusion and an outer annular protrusion are respectively protruded at the inner and outer edges of the bottom of the rotor end cover. A receiving groove is formed between the inner annular protrusion and the outer annular protrusion. A plurality of magnetic tile positioning grooves and mounting bosses are respectively arranged in the receiving groove. The magnetic tile is installed in the magnetic tile positioning groove. The core block is installed on the end surface of the mounting boss. A first storage cavity is respectively arranged between the inner annular protrusion and the outer annular protrusion on the inner and outer sides of the core block. The inner and outer sides of the magnetic tile are respectively arranged at the inner annular protrusion. A second storage cavity is provided between the protrusion and the outer annular protrusion, and the second storage cavity is connected to the first storage cavity. After the adhesive is injected into the first storage cavity and the second storage cavity and solidified, the magnetic tiles and the core blocks are fixed on the rotor end cover. Through the cooperation of the inner annular protrusion, the outer annular protrusion and the adhesive, the core blocks and the magnetic tiles have a hard limiting structure in all directions, which increases the structural strength exponentially. The radial limit formed between the inner annular protrusion and the outer annular protrusion ensures that after the rotor is subjected to an overload impact force, the magnetic tiles and the core blocks will not fall off and fly out. The structural arrangement is reasonable, safe and reliable.

[0014] 2. Other advantages of the utility model are described in detail in the embodiment section of the specification. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A three-dimensional diagram provided for the utility model;

[0016] Figure 2 Another perspective view provided by the utility model;

[0017] Figure 3 A front view provided for the utility model;

[0018] Figure 4 An exploded view provided for the utility model;

[0019] Figure 5 This is another exploded view from another angle provided by the utility model. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] Embodiment 1:

[0022] like Figures 1 to 5 As shown, the present embodiment provides an axial flux motor rotor, characterized in that it includes a rotor end cover 1, a rotor core 2 and a plurality of magnetic tiles 3, the rotor core 2 includes a plurality of core blocks 21, an inner annular protrusion 11 and an outer annular protrusion 12 are respectively protruded at the inner and outer edges of the bottom of the rotor end cover 1, a receiving groove 13 is formed between the inner annular protrusion 11 and the outer annular protrusion 12, a plurality of spaced magnetic tile positioning grooves 14 and a mounting boss 15 are respectively arranged in the receiving groove 13, the magnetic tile 3 is installed in the magnetic tile positioning groove 14, the core block 21 is installed on the end surface of the mounting boss 15, and a first storage groove 14 is respectively arranged between the inner annular protrusion 11 and the outer annular protrusion 12 on the inner and outer sides of the core block 21 Storage cavity 210, a second storage cavity 30 is provided on the inner and outer sides of the magnetic tile 3 between the inner annular protrusion 11 and the outer annular protrusion 12 respectively, the second storage cavity 30 is connected with the first storage cavity 210, and the adhesive is injected into the first storage cavity 210 and the second storage cavity 30 and solidified, and then the magnetic tile 3 and the core block 21 are fixed on the rotor end cover 1, and the core block and the magnetic tile have a hard limiting structure in all directions through the cooperation of the inner annular protrusion, the outer annular protrusion and the adhesive, which increases the structural strength exponentially, and the radial limit formed between the inner annular protrusion and the outer annular protrusion ensures that after the rotor is subjected to overload impact force, the magnetic tile and the core block will not fall off and fly out, and the structural arrangement is reasonable, safe and reliable.

[0023] A plurality of adhesive storage grooves 211 are provided on the bottom surface of the above-mentioned core block 21. The bottom surface of the core block 21 is against the end surface of the mounting boss 15. The first storage cavity 210 is connected with the adhesive storage groove 211. When the adhesive is injected into the first storage cavity 210, the adhesive penetrates into the adhesive storage groove 211 and solidifies. The design of the adhesive storage groove 211 is equivalent to increasing the bonding contact area, so that the core block is fixed more firmly.

[0024] The top of each of the above-mentioned core blocks 21 and the corner position close to the magnetic tile 3 are provided with a chamfer 212 or the top surface of each core block 21 is an arc surface. When the size of the chamfer is optimized, each air gap magnetic density harmonic may increase or decrease. It is necessary to find the specific source of the air gap magnetic density harmonics in order to optimize the electromagnetic force of the specific order and frequency that causes the risk, optimize the resonance excitation, and ultimately achieve the effect of optimizing NVH.

[0025] The chamfer 212 is an oblique angle or an arc angle.

[0026] The core block 21 is made of silicon steel sheet or composite material or SMC material, which can realize the casting or cutting of the core block 21 as a whole, making the setting of the chamfer 4 or arc surface more flexible.

[0027] The magnetic tile 3 is made of NdFeB or ferrite material.

[0028] Embodiment 2:

[0029] A disc motor comprises a stator assembly and a rotor assembly, wherein the rotor assembly adopts an axial flux motor rotor as described in the first embodiment.

[0030] The above embodiments are preferred implementation modes of the present invention, but the implementation modes of the present invention are not limited thereto. Any other changes, modifications, substitutions, combinations, and simplifications made without departing from the spirit and principle of the present invention are equivalent replacement methods and are included in the protection scope of the present invention.

Claims

1. An axial flux motor rotor, characterized in that: The invention comprises a rotor end cover (1), a rotor core (2) and a plurality of magnetic tiles (3), wherein the rotor core (2) comprises a plurality of core blocks (21), an inner annular protrusion (11) and an outer annular protrusion (12) are respectively protruded at the inner and outer edges of the bottom of the rotor end cover (1), a receiving groove (13) is formed between the inner annular protrusion (11) and the outer annular protrusion (12), a plurality of magnetic tile positioning grooves (14) and mounting bosses (15) are respectively arranged in the receiving groove (13) and are distributed at intervals, the magnetic tiles (3) are mounted in the magnetic tile positioning grooves (14), and the core blocks (21) are mounted on the mounting bosses On the end surface of the platform (15), a first storage cavity (210) is provided between the inner annular protrusion (11) and the outer annular protrusion (12) on the inner and outer sides of the core block (21), and a second storage cavity (30) is provided between the inner annular protrusion (11) and the outer annular protrusion (12) on the inner and outer sides of the magnetic tile (3), and the second storage cavity (30) is communicated with the first storage cavity (210). After the adhesive is injected into the first storage cavity (210) and the second storage cavity (30) and solidified, the magnetic tile (3) and the core block (21) are fixed on the rotor end cover (1).

2. The axial flux motor rotor according to claim 1, characterized in that: A plurality of adhesive storage grooves (211) are provided on the bottom surface of the core block (21), the bottom surface of the core block (21) abuts against the end surface of the mounting boss (15), the first storage cavity (210) is connected to the adhesive storage grooves (211), and when the adhesive is injected into the first storage cavity (210), the adhesive penetrates into the adhesive storage grooves (211) and solidifies.

3. An axial flux motor rotor according to claim 1 or 2, characterized in that: A chamfer (212) is provided at the top of each core block (21) and at an angle close to the magnetic tile (3), or the top surface of each core block (21) is an arc surface.

4. The axial flux motor rotor according to claim 3, characterized in that: The chamfer (212) is an oblique angle or a rounded angle.

5. The axial flux motor rotor according to claim 4, characterized in that: The iron core block (21) is made of silicon steel sheet or composite material or SMC material.

6. The axial flux motor rotor according to claim 5, characterized in that: The magnetic tile (3) is made of neodymium iron boron or ferrite material.

7. A disc motor, comprising a stator assembly and a rotor assembly, characterized in that: The rotor assembly adopts an axial flux motor rotor as claimed in any one of claims 1 to 6.

Images