A magnet fixing structure in the rotor disk of an axial flux motor

Abstract

This utility model relates to the field of motor rotor disk technology, and in particular to a fixing structure for magnets in an axial flux motor rotor disk. This utility model involves inserting the socket end of a stainless steel pressure plate into the socket and the constraint end into the notch, allowing the stainless steel pressure plate to be placed sequentially between adjacent magnets. The bottom ends of the stainless steel pressure plate can press against the protrusions on both sides of the magnet. Then, by sequentially tightening screws into the through hole and threaded hole, the stainless steel pressure plate is locked in place. After being locked in place, the stainless steel pressure plate generates downward pressure on the protrusions on both sides of the magnet, thus pressing and fixing the magnet and preventing it from moving. Furthermore, the screws locking the stainless steel pressure plate improves the assembly efficiency of the magnets. This solves the problems of unstable installation and low assembly efficiency in existing magnet installation methods.

Description

Technical Field

[0001] This utility model relates to the field of motor rotor disk technology, and in particular to a magnet fixing structure in an axial flux motor rotor disk. Background Technology

[0002] The rotor disk of the axial flux motor adopts a disk-shaped structure with an air gap perpendicular to the shaft. The magnetic lines of force are parallel to the shaft, forming axial air gap flux. This structure effectively balances axial forces, improves torque density, and optimizes heat dissipation. The rotor disk is usually located between or outside the stator disks. When using an intermediate rotor structure (SRS configuration), the rotor disk is encased by the stator core, and magnets are embedded in the rotor disk to generate a magnetic field. This design solves the problem of force imbalance in traditional single-disc structures by using the magnetic pull generated by the dual stator windings to cancel out the axial forces.

[0003] The existing method for installing and fixing magnets in rotor disks involves placing pressure plates between adjacent magnets, with both ends of the pressure plates positioned inside corresponding notches on the rotor disk. The notches are then tapped to cause them to collapse and contact the pressure plates, thus constraining their position. However, this method fails to provide downward pressure on the magnets, leading to unstable installation. Furthermore, the tapping method is inefficient. Therefore, we propose a magnet fixing structure for axial flux motor rotor disks to address these issues. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of the prior art by proposing a magnet fixing structure for the rotor disk of an axial flux motor.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a fixing structure for magnets in an axial flux motor rotor disk, comprising a rotor disk, an annular cavity, a socket, a notch, a threaded hole, a groove, a magnet disk, magnets, a convex strip, a stainless steel pressure plate, a socket end, a constraint end, a through hole, and screws. An annular cavity is fixedly installed inside the rotor disk. Multiple sockets are fixedly installed on the inner wall surface of the annular cavity. Multiple notches are fixedly installed on the outer edge of the annular cavity. Threaded holes are fixedly installed inside each notch. A groove is fixedly installed at the bottom inside the annular cavity. A magnet disk is movably installed inside the annular cavity. Multiple magnets are movably installed on the upper surface of the magnet disk. A convex strip is fixedly installed on both sides of each magnet. Stainless steel pressure plates are movably installed between each pair of magnets. A socket end is provided at one end of the stainless steel pressure plate and is movably installed inside the socket. A constraint end is provided at the other end of the stainless steel pressure plate and is movably installed inside the notch. A through hole is fixedly installed on the surface of the constraint end. Screws are threadedly connected to both the threaded hole and the through hole.

[0006] Preferably, the magnet disk is adapted to the interior of the annular cavity, and the grooves are arranged in a circular structure.

[0007] Preferably, the magnets are arranged in a circular array on the surface of the magnet disk, and the magnets are adapted to the interior of the annular cavity.

[0008] Preferably, the socket and the notch are one-to-one correspondences, and the socket end of the stainless steel pressure plate corresponds to the inside of the socket, and the constraint end of the stainless steel pressure plate corresponds to the inside of the notch.

[0009] Preferably, the stainless steel pressure plate has an arc-shaped cross-section.

[0010] Compared with the prior art, this utility model has the following advantages:

[0011] By inserting the socket end of the stainless steel pressure plate into the socket and the constraint end into the notch, the stainless steel pressure plate can be placed between adjacent magnets. The bottom ends of the pressure plate press against the protrusions on both sides of the magnet. Then, by tightening the screws into the through holes and threaded holes, the stainless steel pressure plate is locked in place. This locking creates downward pressure on the protrusions on both sides of the magnet, thus pressing and securing the magnet and preventing movement. Furthermore, the screw-locked stainless steel pressure plate improves magnet assembly efficiency. This solves the problems of unstable installation and low assembly efficiency in existing magnet installation methods. Attached Figure Description

[0012] Figure 1 This is a front view of the entire utility model;

[0013] Figure 2 This is a schematic diagram of the overall disassembled structure of this utility model;

[0014] Figure 3 This is a schematic diagram of the overall magnet structure of this utility model;

[0015] Figure 4 This is a schematic diagram of the overall stainless steel pressure plate structure of this utility model;

[0016] Figure 5 It is the whole of this utility model Figure 1 Enlarged structural diagram at point A in the middle;

[0017] Figure 6 It is the whole of this utility model Figure 2 Enlarged structural diagram at point B;

[0018] Figure 7 It is the whole of this utility model Figure 2 Enlarged structural diagram at point C.

[0019] In the diagram: 1. Rotor disc; 2. Annular cavity; 3. Socket; 4. Notch; 5. Threaded hole; 6. Slot; 7. Magnet disc; 8. Magnet; 9. Raised bar; 10. Stainless steel pressure plate; 11. Socket end; 12. Constraint end; 13. Through hole; 14. Screw. Detailed Implementation

[0020] The following description is intended to disclose the present invention so that those skilled in the art can implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art.

[0021] like Figure 1-7 The diagram illustrates a magnet fixing structure in an axial flux motor rotor disk, comprising a rotor disk 1, an annular cavity 2, sockets 3, notches 4, threaded holes 5, a groove 6, a magnet disk 7, a magnet 8, a protrusion 9, a stainless steel pressure plate 10, a socket end 11, a constraint end 12, a through hole 13, and screws 14. The annular cavity 2 is fixedly installed inside the rotor disk 1. Multiple sockets 3 are fixedly installed on the inner annular wall surface of the annular cavity 2. Multiple notches 4 are fixedly installed on the outer annular wall edge of the annular cavity 2, and threaded holes 5 are fixedly installed inside each notch 4. A groove is fixedly installed at the bottom inside the annular cavity 2. 6. A magnetic disk 7 is movably installed inside the annular cavity 2. Multiple magnets 8 are movably installed on the upper surface of the magnetic disk 7. Raised strips 9 are fixedly installed on both sides of the magnets 8. Stainless steel pressure plates 10 are movably installed between each pair of magnets 8. One end of the stainless steel pressure plate 10 is provided with a socket end 11, which is movably installed into the socket 3. The other end of the stainless steel pressure plate 10 is provided with a constraint end 12, which is movably installed into the notch 4. A through hole 13 is fixedly installed on the surface of the constraint end 12. Screws 14 are threadedly connected to both the threaded hole 5 and the through hole 13.

[0022] In this embodiment, the magnet disk 7 is adapted to the interior of the annular cavity 2, and the groove 6 is arranged in a circular structure.

[0023] In practical use, when glue is applied to the bottom of the annular cavity 2, the glue can flow into the groove 6 at the bottom of the annular cavity 2, thereby increasing the adhesive surface of the glue. After the magnet disk 7 is fitted into the annular cavity 2, the magnet disk 7 can be stably installed into the annular cavity 2 due to the adhesiveness of the glue.

[0024] In this embodiment, the magnets 8 are all arranged in a circular array on the surface of the magnet disk 7, and the magnets 8 are all adapted to the inside of the annular cavity 2.

[0025] In practical use, magnets 8 are arranged sequentially on the surface of magnet disk 7, and the inner ring wall and outer ring arm on the annular cavity 2 can constrain the magnets 8 front and back.

[0026] In this embodiment, the socket 3 and the notch 4 are one-to-one correspondences, and the socket end 11 of the stainless steel pressure plate 10 corresponds to the inside of the socket 3, and the constraint end 12 of the stainless steel pressure plate 10 corresponds to the inside of the notch 4.

[0027] In practical use, by inserting the socket end 11 of the stainless steel pressure plate 10 into the socket 3 and the constraint end 12 into the notch 4, the stainless steel pressure plate 10 can be placed between adjacent magnets 8 in sequence. The bottom ends of the stainless steel pressure plate 10 can contact and press the protrusions 9 on both sides of the magnet 8. Then, by tightening the screws 14 into the through hole 13 and the threaded hole 5 in sequence, the stainless steel pressure plate 10 can be locked and fixed. After the stainless steel pressure plate 10 is locked and fixed, it can generate downward pressure on the protrusions 9 on both sides of the magnet 8, thereby pressing and fixing the magnet 8 and preventing the magnet 8 from moving. The screws 14 lock and fix the stainless steel pressure plate 10, thereby improving the assembly efficiency of the magnet 8. This solves the problems of unstable installation and low assembly efficiency in existing magnet installation methods.

[0028] In this embodiment, the stainless steel pressure plate 10 has an arc-shaped cross-section.

[0029] In practical use, the arc-shaped stainless steel pressure plate 10 can better press and fix the protrusions 9 on both sides of the magnet 8.

[0030] The working principle of the magnet fixing structure in the rotor disk of the axial flux motor mentioned in this utility model is as follows:

[0031] In use, when glue is applied to the bottom of the annular cavity 2, the glue can flow into the groove 6 at the bottom of the annular cavity 2, thereby increasing the adhesive surface of the glue. After the magnet disk 7 is fitted into the annular cavity 2, the magnet disk 7 can be stably installed into the annular cavity 2 due to the adhesiveness of the glue.

[0032] Then, by arranging the magnets 8 sequentially on the surface of the magnet disk 7, and by using the inner ring wall and outer ring arm on the annular cavity 2, the magnets 8 can be constrained front and back.

[0033] Then, by inserting the socket end 11 of the stainless steel pressure plate 10 into the socket 3 and the constraint end 12 into the notch 4, the stainless steel pressure plate 10 can be placed between adjacent magnets 8 in sequence, so that the bottom ends of the stainless steel pressure plate 10 can contact and press the protrusions 9 on both sides of the magnet 8. Then, by tightening the screws 14 into the through hole 13 and the threaded hole 5 in sequence, the stainless steel pressure plate 10 can be locked and fixed. After the stainless steel pressure plate 10 is locked and fixed, it can generate downward pressure on the protrusions 9 on both sides of the magnet 8, thereby pressing and fixing the magnet 8 and preventing the magnet 8 from moving. The assembly efficiency of the magnet 8 can be improved by locking and fixing the stainless steel pressure plate 10 with screws 14. This solves the problems of unstable installation and low assembly efficiency of the existing magnet installation method.

[0034] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A fixing structure for a magnet in a rotor disk of an axial flux motor, comprising a rotor disk (1), an annular cavity (2), a socket (3), a notch (4), a threaded hole (5), a groove (6), a magnet disk (7), a magnet (8), a protrusion (9), a stainless steel pressure plate (10), a socket end (11), a constraint end (12), a through hole (13), and a screw (14), characterized in that: An annular cavity (2) is fixedly installed inside the rotor disk (1). Multiple insertion ports (3) are fixedly installed on the inner annular wall surface of the annular cavity (2). Multiple notches (4) are fixedly installed on the outer annular wall edge of the annular cavity (2). Threaded holes (5) are fixedly installed inside each notch (4). A groove (6) is fixedly installed at the bottom inside the annular cavity (2). A magnet disk (7) is movably installed inside the annular cavity (2). Multiple magnets (8) are movably installed on the upper surface of the magnet disk (7). Both sides of the magnets (8) have... A protruding strip (9) is fixedly installed. Stainless steel pressure plates (10) are movably installed between each pair of magnets (8). One end of the stainless steel pressure plate (10) is provided with a socket end (11), and the socket end (11) is movably installed into the socket (3). The other end of the stainless steel pressure plate (10) is provided with a constraint end (12), and the constraint end (12) is movably installed into the notch (4). A through hole (13) is fixedly installed on the surface of the constraint end (12). Screws (14) are threadedly connected to the threaded hole (5) and the through hole (13).

2. The fixing structure of the magnet in the rotor disc of an axial flux motor according to claim 1, characterized in that: The magnet disk (7) is adapted to the interior of the annular cavity (2), and the groove (6) is arranged in a circular structure.

3. The fixing structure of the magnet in the rotor disc of an axial flux motor according to claim 1, characterized in that: The magnets (8) are arranged in a circular array on the surface of the magnet disk (7), and the magnets (8) are all adapted to the inside of the annular cavity (2).

4. The fixing structure of the magnet in the rotor disc of an axial flux motor according to claim 1, characterized in that: The socket (3) and notch (4) are one-to-one correspondences, and the socket end (11) of the stainless steel pressure plate (10) corresponds to the inside of the socket (3), and the constraint end (12) of the stainless steel pressure plate (10) corresponds to the inside of the notch (4).

5. The structure for fixing the magnets in the rotor disc of an axial flux motor according to claim 1, characterized in that: The stainless steel pressure plate (10) has an arc-shaped cross-section.

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