A rotor disk, a rotor assembly and an axial magnetic field motor

Abstract

The present invention discloses a rotor disk, a rotor assembly and an axial magnetic field motor, wherein the rotor disk comprises: a back iron; and a plurality of barrier steps arranged on the back iron, wherein a bonding surface for bonding magnetic steel is formed between adjacent barrier steps. In the rotor disk of the present invention, a plurality of barrier steps are arranged on the back iron, and the magnetic steel is bonded to the bonding surface; the magnetic steel can be circumferentially positioned by arranging the barrier steps. Compared with the prior art, the circumferential positioning of the magnetic steel is increased, thereby improving the bonding force of the magnetic steel, thereby extending the service life.

Description

Technical Field

[0001] The present invention relates to the technical field of motors, and more particularly to a rotor disk, a rotor assembly and an axial magnetic field motor. Background Art

[0002] The rotor disc structure is mostly a magnet directly bonded to the rotor disc, fixed by the magnetic attraction and the bonding force between the bottom surface of the magnet and the contact surface of the back iron. When the motor is running at high speed, the motor will vibrate due to the surrounding environment and its own processing errors. Therefore, long-term operation of the motor will cause the magnet to fall off, which directly affects the service life of the motor. In addition, in addition to the bottom surface of the magnet being bonded to the back iron, the proximal and distal surfaces along the radial direction are also bonded to the back iron. This method increases the difficulty of assembling the magnet and is not easy to disassemble. Summary of the invention

[0003] In view of this, the technical problem to be solved by the present invention is how to prolong the service life. To this end, the present invention provides a rotor disk, a rotor assembly and an axial magnetic field motor.

[0004] To achieve the above object, the present invention provides the following technical solutions:

[0005] A rotor disk, comprising:

[0006] Back iron; and

[0007] A plurality of barrier steps are arranged on the back iron, and bonding surfaces for bonding the magnetic steel are formed between adjacent barrier steps.

[0008] In one embodiment of the present invention, the edge of the back iron is provided with a side wall extending in a direction perpendicular to the end surface of the back iron, and the side wall can abut against the magnetic steel.

[0009] In another embodiment of the present invention, a loading and unloading groove is provided at a portion of the side wall corresponding to the bonding surface.

[0010] In yet another embodiment of the present invention, a groove gap is further provided between the side wall and the blocking step.

[0011] In yet another embodiment of the present invention, a counterweight groove is further provided in the middle of the back iron.

[0012] In yet another embodiment of the present invention, a weight-reducing hole is provided at the bottom of the counterweight groove.

[0013] In yet another embodiment of the present invention, the cross-sectional area of ​​the blocking step gradually increases from the middle of the back iron to the edge of the iron.

[0014] In yet another embodiment of the present invention, a plurality of the barrier steps are arranged obliquely on the back iron.

[0015] The present invention also discloses a rotor assembly, comprising a rotor disk as described in any one of the above items, and a magnetic steel arranged on the bonding surface.

[0016] The present invention also discloses an axial magnetic field motor, comprising the rotor assembly as described above.

[0017] From the above technical solution, it can be seen that in the rotor disk of the present invention, a plurality of barrier steps are arranged on the back iron, and the magnetic steel is bonded to the bonding surface; the magnetic steel can be circumferentially positioned by arranging the barrier steps. Compared with the prior art, the circumferential positioning of the magnetic steel is increased, thereby improving the bonding force of the magnetic steel and prolonging the service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 A schematic diagram of the three-dimensional structure of a rotor disk provided in an embodiment of the present invention;

[0020] Figure 2 A schematic cross-sectional structure diagram of a rotor disk provided in an embodiment of the present invention;

[0021] Figure 3 A schematic diagram of a three-dimensional structure of a rotor assembly provided by an embodiment of the present invention;

[0022] In the figure, 100 is the back iron, 200 is the blocking step, 300 is the bonding surface, 400 is the side wall, 500 is the loading and unloading groove, 600 is the groove gap, 700 is the counterweight groove, 701 is the weight reduction hole, and 800 is the magnetic steel. DETAILED DESCRIPTION

[0023] The core of the present invention is to provide a rotor disk, a rotor assembly and an axial magnetic field motor to extend the service life.

[0024] In addition, the embodiments shown below do not limit the invention described in the claims in any way. In addition, all the contents of the configurations shown in the embodiments below are not limited to the solutions required as the invention described in the claims.

[0025] See also Figures 1 to 3 The rotor disk in the embodiment of the present invention comprises:

[0026] Back iron 100; and

[0027] A plurality of barrier steps 200 are disposed on the back iron 100 , and a bonding surface 300 for bonding the magnetic steel 800 is formed between adjacent barrier steps 200 .

[0028] In the rotor disk of the present invention, a plurality of blocking steps 200 are arranged on the back iron 100, and the magnetic steel 800 is bonded to the bonding surface 300; the magnetic steel 800 can be circumferentially positioned by providing the blocking steps 200. Compared with the prior art, the circumferential positioning of the magnetic steel 800 is increased, thereby improving the bonding force of the magnetic steel 800 and prolonging the service life.

[0029] In one embodiment of the present invention, the edge of the back iron 100 is provided with a side wall 400 extending in a direction perpendicular to the end face of the back iron 100, and the side wall 400 can abut against the magnetic steel 800. By providing the side wall 400, the magnetic steel 800 can be bonded together through the bonding surface 300, the blocking steps 200 located on both sides of the magnetic steel 800, and the side wall 400, a total of four surfaces, wherein the blocking steps 200 located on both sides of the magnetic steel 800 can be circumferentially positioned, and the side wall 400 can be radially positioned, thereby further improving the bonding force of the magnetic steel 800 and extending the service life.

[0030] In order to facilitate disassembly, a loading and unloading groove 500 is provided at a portion of the side wall 400 corresponding to the bonding surface 300. The loading and unloading groove 500 can provide convenient force support for the magnetic steel 800 during loading and unloading, thereby achieving the purpose of convenient disassembly.

[0031] In another embodiment of the present invention, a groove gap 600 is further provided between the side wall 400 and the blocking step 200. The groove gap 600 can facilitate the processing of the blocking step 200.

[0032] A counterweight groove 700 is also provided in the middle of the back iron 100. When the rotor disc rotates, the imbalance of the rotor disc can be reduced by adding balancing mud into the counterweight groove 700.

[0033] Furthermore, in order to reduce the mass of the rotor disk, a weight reduction hole 701 is provided at the bottom of the counterweight groove 700 .

[0034] The cross-sectional area of ​​the blocking step 200 gradually increases from the middle of the back iron 100 to the edge of the iron; a plurality of blocking steps 200 are arranged obliquely on the back iron 100. By such an arrangement, it can be adapted to the oblique pole magnetic steel 800, and the rotor disk forms an oblique pole rotor disk.

[0035] The present invention also discloses a rotor assembly, including a rotor disk as described above, and a magnetic steel 800 disposed on a bonding surface 300. Since the rotor disk has the above effects, the rotor assembly including the rotor disk has corresponding effects, which will not be described in detail here.

[0036] The present invention also discloses an axial magnetic field motor, comprising the rotor assembly as described above. Since the rotor assembly has the above effects, the axial magnetic field motor comprising the rotor assembly has corresponding effects, which will not be described in detail here.

[0037] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A rotor disk, characterized in that: include: Back iron; as well as A plurality of barrier steps are arranged on the back iron, and a bonding surface for bonding the magnetic steel is formed between adjacent barrier steps; The edge of the back iron is provided with a side wall extending in a vertical direction along the end surface of the back iron, and the side wall can abut against the magnetic steel; the magnetic steel is bonded to the bonding surface, the blocking steps located on both sides of the magnetic steel, and the side wall; The side wall is provided with a loading and unloading groove at a position corresponding to the bonding surface; A counterweight groove is also provided in the middle of the back iron; a weight reduction hole is provided at the bottom of the counterweight groove; The cross-sectional area of ​​the blocking step gradually increases from the middle of the back iron to the edge of the iron, and a plurality of the blocking steps are arranged obliquely on the back iron; the magnetic steel is an oblique pole magnetic steel.

2. The rotor disk according to claim 1, characterized in that A groove gap is also provided between the side wall and the blocking step.

3. A rotor assembly, characterized in that: The invention comprises a rotor disk as claimed in any one of claims 1 to 2, and a magnetic steel arranged on the bonding surface.

4. An axial magnetic field motor, characterized in that: Comprising the rotor assembly as claimed in claim 3.

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