Axial motor rotor

Abstract

An axial motor rotor includes a rotor bracket, a magnetic back iron, and several magnets mounted on the rotor bracket. The magnetic back iron is fixedly mounted within the rotor bracket, and the magnets are mounted above the magnetic back iron. A carbon fiber magnet anti-slip plate is also fixed above the magnets. The edge of the carbon fiber magnet anti-slip plate is fixed to the rotor bracket, and the magnets are positioned between the carbon fiber magnet anti-slip plate and the magnetic back iron. The carbon fiber magnet anti-slip plate effectively solves the problem of magnet detachment in motors, preventing potential motor quality issues.

Description

Technical Field

[0001] The invention relates to an axial motor rotor. Background Art

[0002] Existing axial motor rotors use surface-mounted motor magnets, which are glued together to ensure overall structural stability. However, in practice, relying solely on the adhesive strength of glue often results in the magnets falling off, posing a potential safety hazard. Summary of the Invention

[0003] In view of the above situation, in order to solve the problems existing in the above technology, the present invention proposes an axial motor rotor, which effectively solves the problem of motor magnet falling off through a carbon fiber magnet anti-decompression plate structure. Since the electrical conductivity of carbon fiber is very low, it will not generate eddy currents under the magnetic field, and it has high strength, which can effectively prevent the magnet from falling off and avoid the occurrence of quality risks during the operation of the motor.

[0004] An axial motor rotor includes a rotor support and a magnetic back iron and a plurality of magnets arranged on the rotor support. The magnetic back iron is fixedly arranged inside the rotor support, the magnet is arranged above the magnetic back iron, and a carbon fiber magnet anti-decompression plate is also fixedly arranged above the magnet. The edge of the carbon fiber magnet anti-decompression plate is fixed to the rotor support, and the magnet is located between the carbon fiber magnet anti-decompression plate and the magnetic back iron.

[0005] According to an axial motor rotor of the present application, the rotor bracket is a circular structure, an annular slot is provided on the rotor bracket, and the plurality of magnets are arranged in the annular slot.

[0006] According to an axial motor rotor of the present application, a bracket outer wall is provided on the outer side of the circular groove on the rotor bracket, and a bracket inner wall is provided on the inner side of the circular groove. The upper surface of the magnet is lower than the top surface of the bracket outer wall and the bracket inner wall, or the upper surface of the magnet is at the same height as the top surface of the bracket outer wall and the bracket inner wall.

[0007] According to an axial motor rotor of the present application, the edges of the carbon fiber magnet anti-stripping plate are fixedly connected to the tops of the outer wall of the bracket and the inner wall of the bracket respectively.

[0008] According to an axial motor rotor of the present application, screw holes are respectively provided on the top of the outer wall of the bracket and the inner wall of the bracket, the carbon fiber magnet anti-slip plate is a circular ring structure, and screw holes are respectively provided on the inner and outer sides of the carbon fiber magnet anti-slip plate, screws are respectively provided in the screw holes, and the carbon fiber magnet anti-slip plate and the top of the outer wall of the bracket and the inner wall of the bracket are fixedly connected by screws.

[0009] According to an axial motor rotor of the present application, the carbon fiber magnet anti-slipping plate is arranged above the circular groove opened on the rotor bracket, and the inner and outer sides of the carbon fiber magnet anti-slipping plate are respectively provided with pressure plate fixing parts protruding to the inner wall of the bracket or the top of the outer wall of the bracket, and screw holes are respectively provided on the pressure plate fixing parts.

[0010] According to an axial motor rotor of the present application, the outer wall of the bracket includes an outer wall inner ring and an outer wall outer ring, the bottoms of the outer wall inner ring and the outer wall outer ring are respectively connected to the bottom plate of the rotor bracket, and a plurality of outer wall connecting parts are provided between the tops of the outer wall inner ring and the outer wall outer ring, and screw holes for connecting to the carbon fiber magnet anti-decompression plate are respectively provided on the outer wall connecting parts.

[0011] According to an axial motor rotor of the present application, a plurality of outer wall slot-shaped air passage holes are further provided on the outer wall of the outer ring of the outer wall.

[0012] According to an axial motor rotor of the present application, adhesive layers are respectively provided between the plurality of magnets and / or at the contact points between the ends of the magnets and the inner cavity wall of the rotor support.

[0013] According to an axial motor rotor of the present application, the assembly method is to first install the magnets into the rotor bracket, and then inject glue into the gaps between the magnets and / or the contact points between the end edges of the magnets and the inner wall of the rotor bracket, with the glue being 0.1 mm higher than the magnets; then press the carbon fiber magnet anti-slip plate onto the top of the magnets, install the screws, and flatten it until the glue solidifies.

[0014] After adopting the technology proposed in the present invention, the axial motor rotor according to the embodiment of the present invention has the following beneficial effects.

[0015] 1) The carbon fiber magnet anti-de-stress plate structure effectively solves the problem of motor magnet falling off and avoids the occurrence of motor quality hazards.

[0016] 2) After applying glue on the magnet, the carbon fiber magnet anti-slip plate is installed and flattened. On the one hand, a two-layer protection scheme for the anti-slip structure is provided to better prevent the magnet from falling off and avoid safety accidents; more importantly, on the other hand, the stability of the magnet fixed between the rotor bracket and the carbon fiber magnet anti-slip plate can be enhanced. By filling the gap with glue, the magnet between the rotor bracket and the carbon fiber magnet anti-slip plate is prevented from loosening or shaking.

[0017] 3) Due to the matching structure of the carbon fiber magnet anti-de-stress plate and the rotor bracket, the conductivity of the carbon fiber plate is very low, which will not affect the magnetic field in the magnet air gap, thus ensuring the quality of the motor; at the same time, the high strength and high temperature resistance of carbon fiber can effectively prevent the magnet from falling off due to high temperature affecting the performance of the glue of the surface-mounted magnet.

[0018] 4) The carbon fiber magnet anti-slip plate and the rotor bracket matching structure at its installation location can not only effectively prevent the magnet from falling off, but also facilitate assembly. The main part of the carbon fiber magnet anti-slip plate is only located above the magnet, which is convenient for effective flattening, improving the stability of the magnet to avoid shaking, and preventing the magnet from falling off due to high temperature.

[0019] 5) The outer wall structure of the rotor bracket can not only cooperate with the carbon fiber magnet anti-decompression plate structure to achieve its function, but also achieve beneficial effects such as weight reduction, ventilation and heat dissipation, thus achieving multiple goals at one stroke. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a structural diagram of a carbon fiber magnet anti-decompression plate according to the present application;

[0021] Figure 2 This is a structural diagram of an axial motor rotor before assembling a carbon fiber magnet anti-decompression plate according to the present application;

[0022] Figure 3 This is a structural diagram of an axial motor rotor after assembly according to the present application;

[0023] Figure 4 This is an exploded view of the axial motor rotor structure according to the present application.

[0024] In the figure,

[0025] Rotor bracket 1

[0026] Screw hole 10

[0027] Bracket outer wall 11

[0028] Outer wall connection portion 110

[0029] Outer wall inner circle 111

[0030] Outer wall outer ring 112

[0031] Outer wall grooved airway hole 113

[0032] Bracket inner wall 12

[0033] Magnet 2

[0034] Carbon fiber magnet anti-decompression plate 3

[0035] Pressing plate fixing portion 30

[0036] Screw 4

[0037] Magnetic back iron 5 DETAILED DESCRIPTION

[0038] Various preferred embodiments of the present invention will be described below with reference to the accompanying drawings. The following description with reference to the accompanying drawings is provided to facilitate understanding of the exemplary embodiments of the present invention as defined by the claims and their equivalents. It includes various specific details to assist understanding, but they are to be considered as illustrative only. Therefore, those skilled in the art will recognize that various changes and modifications may be made to the embodiments described herein without departing from the scope and spirit of the present invention. Furthermore, for clarity and brevity, detailed descriptions of functions and structures well known in the art will be omitted.

[0039] like Figure 1-3 As shown, an axial motor rotor includes a rotor bracket 1 and a magnetic back iron 5 and a plurality of magnets 2 arranged on the rotor bracket 1. The magnetic back iron 5 is fixedly arranged inside the rotor bracket 1, and the magnets 2 are arranged above the magnetic back iron 5. A carbon fiber magnet anti-decompression plate 3 is also fixed above the magnets 2. The edge of the carbon fiber magnet anti-decompression plate 3 is fixed on the rotor bracket 1, and the magnets 2 are located between the carbon fiber magnet anti-decompression plate 3 and the magnetic back iron 5 on the rotor bracket 1.

[0040] The specific setting method is as follows: a magnetic back iron 5 is fixedly arranged at one end inside the rotor bracket 1, and the magnetic back iron 5 is fixed to the rotor bracket 1 by screws; special glue is applied on the magnetic back iron 5 and the magnet 2 is placed therein, and a carbon fiber magnet anti-decompression plate 3 is also fixed above the magnet 2, and the carbon fiber magnet anti-decompression plate 3 is fixed to the magnet 2 by special glue; the edge of the carbon fiber magnet anti-decompression plate 3 is fixed to the rotor bracket 1, and the magnet 2 is located between the carbon fiber magnet anti-decompression plate 3 and the magnetic back iron 5 on the rotor bracket 1.

[0041] The rotor support 1 is a circular structure. A circular groove is provided on the rotor support 1. The magnets 2 are arranged in the circular groove.

[0042] The rotor bracket 1 is provided with a bracket outer wall 11 on the outside of the circular groove, and a bracket inner wall 12 on the inside of the circular groove. The upper surface of the magnet 2 is lower than the top surfaces of the bracket outer wall 11 and the bracket inner wall 12, or the upper surface of the magnet 2 is at the same height as the top surfaces of the bracket outer wall 11 and the bracket inner wall 12.

[0043] The edges of the carbon fiber magnet anti-slip plate 3 are fixedly connected to the top of the bracket outer wall 11 and the bracket inner wall 12 respectively.

[0044] The tops of the outer wall 11 and the inner wall 12 of the bracket are respectively provided with screw holes 10. The carbon fiber magnet anti-slipping plate 3 is a circular ring structure. The inner and outer sides of the carbon fiber magnet anti-slipping plate 3 are respectively provided with screw holes. Screws 4 are provided in the screw holes. The carbon fiber magnet anti-slipping plate 3 and the tops of the outer wall 11 and the inner wall 12 of the bracket are respectively fixedly connected by screws 4.

[0045] The carbon fiber magnet anti-slipping plate 3 is arranged above the circular groove opened on the rotor bracket 1, and the inner and outer sides of the carbon fiber magnet anti-slipping plate 3 are respectively provided with a pressure plate fixing part 30 protruding to the top of the bracket inner wall 12 or the bracket outer wall 11, and the pressure plate fixing part 30 is respectively provided with screw holes.

[0046] The outer wall 11 of the bracket includes an outer wall inner ring 111 and an outer wall outer ring 112. The bottoms of the outer wall inner ring 111 and the outer wall outer ring 112 are respectively connected to the bottom plate of the rotor bracket 1. A plurality of outer wall connecting parts 110 are provided between the tops of the outer wall inner ring 111 and the outer wall outer ring 112. Screw holes 10 for connecting to the carbon fiber magnet anti-decompression plate 3 are respectively provided on the outer wall connecting parts 110.

[0047] The outer wall of the outer ring 112 is further provided with a plurality of outer wall groove-shaped airway holes 113 .

[0048] Adhesive layers are provided between the magnets 2 and / or at the places where the ends of the magnets 2 contact the inner wall of the rotor support 1 .

[0049] The assembly method is to first install the magnets 2 into the rotor bracket 1, and then inject glue into the gaps between the magnets 2 and / or the contact points between the end edges of the magnets 2 and the inner wall of the rotor bracket 1, with the glue being 0.1 mm higher than the magnets 2; then press the carbon fiber magnet anti-slip plate 3 onto the top of the magnets 2, install the screws 4, and flatten it until the glue solidifies.

[0050] According to an axial motor rotor of the present application, the gaps and edges of the magnets are preferably coated with 420 glue, and the carbon fiber magnet anti-stripping plate 3 is pressed onto the top of the magnet 2. It is preferably installed with 24 M2X3 flat head screws and then flattened to wait for the glue to solidify.

[0051] According to an axial motor rotor of the present application, the problem of motor magnets falling off is effectively solved by the carbon fiber magnet anti-de-pressing plate structure, thereby avoiding the occurrence of hidden dangers in motor quality. By applying glue on the magnet and then installing the carbon fiber magnet anti-de-pressing plate and flattening it, on the one hand, a two-layer protection scheme for the anti-de-pressing structure is provided to better prevent the magnets from falling off and avoid safety accidents; more importantly, on the other hand, the stability of the magnets fixed between the rotor bracket and the carbon fiber magnet anti-de-pressing plate can be enhanced, and by filling the gap with glue, the loosening or shaking of the magnets between the rotor bracket and the carbon fiber magnet anti-de-pressing plate can be avoided. In addition, due to the matching structure of the carbon fiber magnet anti-de-pressing plate and the rotor bracket, the conductivity of the carbon fiber plate is very low, and it will not affect the magnetic field in the magnet air gap, thereby ensuring the quality of the motor; at the same time, the high strength and high temperature resistance of carbon fiber can effectively avoid the phenomenon of magnet falling off caused by the high temperature affecting the performance of the glue of the surface-mounted magnet. The carbon fiber magnet anti-slip plate and its mounting structure in conjunction with the rotor bracket effectively prevent it from falling out while facilitating assembly. The main body of the carbon fiber magnet anti-slip plate sits just above the magnets, effectively flattening them and improving their stability to prevent them from shaking and falling out due to high temperatures. The rotor bracket's outer wall structure not only complements the carbon fiber magnet anti-slip plate structure, but also offers advantages like weight reduction, ventilation, and heat dissipation, achieving multiple goals at once.

[0052] The present invention has been introduced in detail above. Specific examples are used herein to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core ideas. At the same time, for those skilled in the art, according to the ideas of the present invention, there may be changes in the specific implementation methods and application scopes. In summary, the contents of this specification should not be understood as limiting the present invention.

[0053] Through the description of the above embodiments, those skilled in the art can clearly understand that the present invention can be implemented. Of course, the above-listed situations are only examples, and the present invention is not limited thereto. Those skilled in the art should understand that other variations or simplifications of the technical solution of the present invention can be appropriately applied to the present invention and should be included within the scope of the present invention.

Claims

1. An axial motor rotor, characterized in that: The invention comprises a rotor support (1), a magnetic back iron (5) and a plurality of magnets (2) arranged on the rotor support (1), wherein the magnetic back iron (5) is fixedly arranged inside the rotor support (1), the magnet (2) is arranged above the magnetic back iron (5), and a carbon fiber magnet anti-decompression plate (3) is also fixedly arranged above the magnet (2), the edge of the carbon fiber magnet anti-decompression plate (3) is fixed on the rotor support (1), and the magnet (2) is located between the carbon fiber magnet anti-decompression plate (3) and the magnetic back iron (5); the rotor support (1) is a circular structure, the rotor support (1) is provided with a circular groove, and the plurality of magnets (2) are arranged in the circular groove; the rotor support (1) is provided with a support outer wall (11) on the outside of the circular groove, and is provided with a support inner wall (11) on the inside of the circular groove. The inner wall (12) of the bracket, the upper surface of the magnet (2) is lower than the top surface of the outer wall (11) of the bracket and the inner wall (12), or the upper surface of the magnet (2) is at the same height as the top surface of the outer wall (11) of the bracket and the inner wall (12); the outer wall (11) of the bracket comprises an outer wall inner ring (111) and an outer wall outer ring (112), the bottoms of the outer wall inner ring (111) and the outer wall outer ring (112) are respectively connected to the bottom plate of the rotor bracket (1), a plurality of outer wall connecting parts (110) are provided between the tops of the outer wall inner ring (111) and the outer wall outer ring (112), and screw holes (10) for connecting to the carbon fiber magnet anti-decompression plate (3) are respectively provided on the outer wall of the outer wall outer ring (112); a plurality of outer wall groove-shaped airway holes (113) are also provided on the outer wall of the outer wall outer ring (112).

2. The axial motor rotor according to claim 1, characterized in that: The edges of the carbon fiber magnet anti-slip plate (3) are respectively fixedly connected to the top of the bracket outer wall (11) and the bracket inner wall (12).

3. The axial motor rotor according to claim 2, characterized in that: The tops of the outer wall (11) and the inner wall (12) of the bracket are respectively provided with screw holes (10); the carbon fiber magnet anti-slipping plate (3) is a circular ring structure; the inner side and the outer side of the carbon fiber magnet anti-slipping plate (3) are respectively provided with screw holes; screws (4) are provided in the screw holes; the carbon fiber magnet anti-slipping plate (3) and the tops of the outer wall (11) and the inner wall (12) of the bracket are respectively fixedly connected by screws (4).

4. The axial motor rotor according to claim 3, characterized in that: The carbon fiber magnet anti-slipping plate (3) is arranged above the annular slot provided on the rotor bracket (1), and the inner side and the outer side of the carbon fiber magnet anti-slipping plate (3) are respectively provided with a pressure plate fixing portion (30) protruding to the top of the bracket inner wall (12) or the bracket outer wall (11), and the pressure plate fixing portion (30) is respectively provided with a screw hole.

5. The axial motor rotor according to claim 1, characterized in that: Adhesive layers are respectively provided between the plurality of magnets (2) and / or at the locations where the ends of the magnets (2) contact the inner cavity wall of the rotor support (1).

6. The axial motor rotor according to claim 1, characterized in that: The assembly method is to first install the magnets (2) into the rotor bracket (1), and then inject glue into the gaps between the magnets (2) and / or the contact points between the end edges of the magnets (2) and the inner cavity wall of the rotor bracket (1), with the glue being 0.1 mm higher than the magnets (2); then press the carbon fiber magnet anti-slip plate (3) onto the top of the magnets (2), install the screws (4), flatten it and wait for the glue to solidify.

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