Magnet attachment jig for Axial Flux Permanent Magnet Motor

Abstract

The present invention relates to a magnet attachment jig for an axial flux motor rotor, comprising a body (21) formed in a cylindrical shape and coupled to the upper part of a rotor plate (12), a plurality of wings (22) fitted along the edge of the body (21) so as to be detachably attached, and an assembly space (23) formed between the wings (22) fitted to the body (21) such that the wings (22) act as partitions to allow the magnet (11) to be assembled. Since the wings (22) installed in the body (21) to install a plurality of magnets (11) divided on the rotor plate (12) are detachably attached to the body (21), the jig (20) can be reused by replacing only the broken wing (22) in the event that a wing (22) breaks. Additionally, the number of wings (22) fitted to the body (21) can be adjusted to match the number of magnets (11) to be attached, thereby allowing for various specifications. It has the effect of being able to manufacture a rotor (10).

Description

Technology Field

[0001] The present invention relates to a magnet attachment jig for an axial flux motor rotor. Background Technology

[0002] Driven by the trend toward electrification, including electric vehicles, there is increasing demand in the electric motor market for maximizing specific power output, miniaturization and weight reduction, and high efficiency. In particular, there is a need for the development of next-generation axial motors (Axial Flux Permanent Magnet Motors, AFPM) to replace radial flux permanent magnet motors (RFPM), as well as the development of related magnetic material technologies.

[0003] In the electric vehicle business sector, there is a demand for the development of next-generation axial motors equipped with Halbach technology, which can improve existing battery life and enhance motor weight and torque density.

[0004] Halbach technology was developed by James M. Winey in Magnepan in 1970, but it has not been easily applied to drive motors because the arrangement and manufacturing of magnets are difficult and high-precision machining technology is required.

[0005] While the alternating array of conventional motors cannot utilize 100% of the magnetic force of permanent magnets, applying Halbach technology can generate a high magnetic flux density in the air gap, thereby improving the motor's torque and output along with increasing specific power, and the amount of permanent magnets used can also be reduced through Halbach array technology.

[0006] While research and development to improve currently commercialized radial electric vehicle motors is underway, there is a need to develop axial flux motors as next-generation motors that can further significantly improve performance and cost. Prior art literature

[0007] Korean Patent Publication No. 10-2023-0144369, 'Field-wound rotor using a Halbach permanent magnet array and hybrid motor including the same' The problem to be solved

[0008] The objective of the present invention is to provide a magnet attachment jig for manufacturing an axial flux motor applied to a motor of an electric vehicle. means of solving the problem

[0009] The magnet attachment jig of the axial flux motor rotor of the present invention is characterized by being composed of a body (21) formed in a cylindrical shape and coupled to the upper part of a rotor plate (12), a plurality of wings (22) that are detachably fitted along the edge of the body (21), and an assembly space (23) formed between the wings (22) fitted to the body (21), wherein the wings (22) act as partitions to allow the magnet (11) to be assembled.

[0010] Additionally, the bottom surface of the body (21) is characterized by having a connecting part (26) formed thereon to be fitted and connected to the protrusion (13) of the rotor plate (12).

[0011] Additionally, the body (21) is characterized by having a plurality of fitting grooves (24) formed radially for attaching a wing (22) so as to be detachably fitted, and a fitting part (25) formed at the end of the wing (22) to be fitted into the fitting grooves (24) so ​​as not to detach the wing from the body (21). Effects of the invention

[0012] The present invention has the effect of allowing the jig to be reused by replacing only the broken blade when a blade breaks, as a plurality of blades installed on the body of the jig to install a plurality of divided magnets on the rotor plate are installed so as to be detachably attached to the body, and the number of blades fitted onto the body can be adjusted to match the number of attached magnets, thereby enabling the manufacture of rotors of various specifications. Brief explanation of the drawing

[0013] FIGS. 1 and 2 are drawings illustrating the configuration of an axial magnetic motor rotor according to an embodiment of the present invention. FIGS. 3 and 4 are drawings illustrating the configuration of a magnet attachment jig for an axial flux motor rotor according to an embodiment of the present invention. FIGS. 5 and 6 are drawings illustrating a configuration for attaching a magnet using a jig according to an embodiment of the present invention. Specific details for implementing the invention

[0014] Preferred embodiments of the present invention will be described in detail below with reference to the attached drawings.

[0015] FIGS. 1 and 2 are drawings illustrating the configuration of an axial flux motor rotor according to an embodiment of the present invention, and FIGS. 3 and 4 are drawings illustrating the configuration of an attachment jig for manufacturing an axial flux motor rotor.

[0016] The magnet attachment jig (20) of the axial flux motor rotor of the present invention is formed in a cylindrical shape and comprises a body (21) that is coupled to the upper part of a rotor plate (12), a plurality of wings (22) that are detachably fitted along the edge of the body (21), and an assembly space (23) formed between the wings (22) fitted to the body (21), wherein the wings (22) act as partitions to allow the magnet (11) to be assembled.

[0017] A connecting part (26) is formed on the bottom surface of the above body (21) to be fitted and coupled to the protrusion (13) of the rotor plate (12), and the connecting part (26) is fitted and coupled to the protrusion (13) of the rotor plate (12) so that the jig (20) is installed on the rotor plate (12).

[0018] In the present invention, a plurality of wings (22) are detachably fitted along the edge of a cylindrical body (21), and a magnet (11) is assembled in the assembly space (23) between the installed wings (22) to manufacture a rotor (10).

[0019] By applying adhesive to the upper part of the rotor plate (12) and attaching a magnet (11) to the assembly space (23) formed between the multiple blades (22), the magnet (11) is attached to each of the multiple partitioned assembly spaces (23) and assembled, thereby allowing the magnet (11) divided into a set angle to be assembled.

[0020] To this end, the wing (22) installed on the body (21) is fitted so that an assembly space (23) can be formed according to the number of magnets (11) being assembled, and the wing (22) is installed on the body (21) so that an assembly space (23) can be formed according to the number of divisions of the magnets (11) being assembled.

[0021] This will be explained in detail with reference to Fig. 3.

[0022] A plurality of fitting grooves (24) are formed radially in the body (21) for attaching a wing (22) so as to be detachably fitted, and a fitting part (25) is formed at the end of the wing (22) to be fitted into the fitting grooves (24) so ​​as not to detach the wing from the body (21).

[0023] The above-mentioned fitting groove (24) is formed in a straight line toward the center of the body (21), and at the innermost part, it is formed in a circular shape with a wider spacing than the straight groove. The fitting part (25) formed at the end of the wing (22) is also formed in a cylindrical shape, so that when the fitting part (25) fits into the fitting groove (24), the wing (22) is caught so that it does not detach from the body (21), except in the up-and-down direction.

[0024] In the present invention, the wing (22) installed on the body (21) is fitted so that it can be detachably attached, so that if the wing (22) is damaged, only the wing (22) can be replaced.

[0025] In the rotor (10) of the present invention, the gap between the attached magnets (11) is formed narrowly, so the thickness of the blade (22) is formed thinly. When the body (21) and the blade (22) are molded as a single unit, if the blade (22) breaks during the process of attaching the magnets (11), there is a problem that the entire jig (20) must be replaced.

[0026] In addition, when manufacturing the jig (20), there is a problem in that it is difficult to mold the thin wing (22) integrally with the body (21), and the defect rate may also increase.

[0027] To solve this, the present invention forms a fitting groove (24) in the body (21) and installs the wing (22) by fitting it into the fitting groove (24). In the event that the wing (22) breaks, it can be repaired quickly by replacing only the broken wing (22). Additionally, by manufacturing the body (21) and the wing (22) separately and fitting them together, it becomes easier to manufacture the jig (20).

[0028] FIGS. 5 and 6 are drawings illustrating a configuration in which a rotor plate (12) attaches a magnet (11) using the jig (20) of the present invention.

[0029] As shown in FIG. 5, a jig (20) is installed on the upper part of the rotor plate (12) so that the connecting part (26) formed on the body (21) is fitted into the protrusion (13), and a rotor (10) is manufactured by attaching a magnet (11) to the assembly space (23) formed between the wings (22) installed on the jig (20) as shown in FIG. 6 while adhesive is applied to the upper part of the rotor plate (12).

[0031] Although specific embodiments have been described in the foregoing description of the present invention, various modifications may be made without departing from the scope of the present invention. Accordingly, the scope of the present invention should not be determined by the described embodiments but by the claims and equivalents thereof. Explanation of the symbols

[0032] (10)-- Rotor (11)-- Magnet (12)-- Rotor plate (13)-- Protrusion (20)-- Jig (21)-- Body (22)-- Wing (23)-- Assembly space (24)-- Insertion groove (25)-- Insertion part (26)-- joint

Claims

Claim 1 A magnet attachment jig for an axial magnetic flux motor rotor is characterized by comprising: a body (21) formed in a cylindrical shape and coupled to the upper part of a rotor plate (12); a plurality of wings (22) that are detachably fitted along the edge of the body (21); and an assembly space (23) formed between the wings (22) fitted to the body (21) such that the wings (22) act as partitions to allow the magnet (11) to be assembled; a plurality of fitting grooves (24) are formed radially in the body (21) for detachably fitting the wings (22); and a fitting part (25) is formed at the end of the wings (22) to be fitted into the fitting grooves (24) so ​​that the wings do not detach from the body (21). Claim 2 A magnet attachment jig for an axial magnetic flux motor rotor, characterized in that, in claim 1, a coupling portion (26) is formed on the bottom surface of the body (21) to be fitted and coupled to the protrusion (13) of the rotor plate (12). Claim 3 delete

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