Magnet fixing structure and permanent magnet motor

Abstract

The utility model discloses a magnet fixed structure and permanent magnet motor, this magnet fixed structure includes: first protruding, first protruding has a plurality, second protruding, second protruding has a plurality, limit angle subassembly, the both ends of magnet steel groove of rotor core along length direction all are provided with two limit angle subassembly, wherein, first protruding and second protruding are arranged on the opposite two sides inner wall of magnet steel groove of rotor core respectively, and first protruding, second protruding and limit angle subassembly all are used for contacting magnet outer wall, limit angle subassembly includes: first limit angle, first limit angle is used for contacting magnet outer wall, second limit angle, second limit angle is used for contacting magnet outer wall, the utility model discloses simple structure, and the accurate location of magnet is carried out, guarantees that magnet installation angle will not shift.

Description

Technical Field

[0001] This utility model relates to the field of motor technology, specifically to a magnet fixing structure and a permanent magnet motor. Background Technology

[0002] As the core component of a permanent magnet motor, the reliability of its fixation directly affects the motor's performance and lifespan. Current methods for fixing magnets typically employ a simple magnetic slot (cavity) to hold them, with a clearance fit between the magnet and the rotor's slot, filled with adhesive. However, due to the lack of precise positioning of the magnet, its installation angle is prone to deviation, which can affect the motor's electromagnetic performance and operational stability. Utility Model Content

[0003] The purpose of this invention is to provide a magnet fixing structure and a permanent magnet motor to precisely limit the position of the magnet and ensure that the installation angle of the magnet does not deviate.

[0004] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a magnet fixing structure, comprising: a first protrusion, having multiple first protrusions; a second protrusion, having multiple second protrusions; and a limiting angle assembly, wherein two limiting angle assemblies are provided at both ends of the magnetic steel groove of the rotor core along the length direction; wherein the first protrusion and the second protrusion are respectively provided on the inner walls of opposite sides of the magnetic steel groove of the rotor core, and the first protrusion, the second protrusion, and the limiting angle assembly are all used to contact the outer wall of the magnet.

[0005] Furthermore, the limiting angle assembly includes: a first limiting angle for contacting the outer wall of the magnet; and a second limiting angle for contacting the outer wall of the magnet.

[0006] Furthermore, two limiting angle assemblies are symmetrically arranged at each end of the magnet slot of the rotor core along the length direction.

[0007] Furthermore, a receiving groove is formed between the first limiting angle, the second limiting angle and the magnetic steel slot of the rotor core, and the receiving groove is used to accommodate the corner of the magnet.

[0008] Furthermore, it also includes arc-shaped protrusions. Arc-shaped protrusions are provided at both ends of the magnetic steel slots of the rotor core along the length direction. The arc-shaped protrusions are used to contact the outer wall of the magnet.

[0009] Furthermore, multiple first protrusions are arranged at intervals along a straight line.

[0010] Furthermore, the number of the first protrusions is even.

[0011] Furthermore, multiple second protrusions are arranged at intervals along a straight line.

[0012] Furthermore, the first protrusion and the second protrusion are staggered.

[0013] A permanent magnet motor includes the aforementioned magnet fixing structure.

[0014] Compared with the prior art, the beneficial effects achieved by this utility model are as follows: This utility model contacts the opposite outer walls of the magnet through the first protrusion and the second protrusion; it also limits the magnet through the first limiting angle, the second limiting angle and the arc-shaped protrusion, so as to accurately limit the magnet and ensure that the installation angle of the magnet will not deviate. Attached Figure Description

[0015] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof.

[0016] Figure 1 This is a schematic diagram of the magnet fixing structure provided by this utility model.

[0017] Figure 2 This is a schematic diagram of the magnet fixing structure and the magnet in conjunction provided by this utility model.

[0018] Figure 3 This is a top view of the magnet fixing structure provided by this utility model.

[0019] Figure 4 yes Figure 3 A magnified structural diagram of region A in the middle.

[0020] Figure 5 yes Figure 3 A magnified structural diagram of region B in the middle.

[0021] Figure 6 yes Figure 3 A magnified structural diagram of region C in the middle.

[0022] In the figure: 1. First protrusion; 2. Second protrusion; 3. Limiting angle assembly; 31. First limiting angle; 32. Second limiting angle; 4. Receiving groove; 5. Arc-shaped protrusion; 6. Magnet groove. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Example 1 Please see Figures 1-6 The present invention provides a technical solution: a magnet fixing structure, including a first protrusion 1 and a second protrusion 2. The first protrusion 1 and the second protrusion 2 are respectively disposed on the inner walls of opposite sides of the magnetic steel groove 6 of the rotor core (the magnetic steel groove 6 is used to install magnets). Specifically, a plurality of first protrusions 1 are disposed on one side of the inner wall of the magnetic steel groove 6 of the rotor core (hereinafter referred to as the magnetic steel groove 6), and a plurality of second protrusions 2 are disposed on the other side of the inner wall of the magnetic steel groove 6. The plurality of first protrusions 1 and the plurality of second protrusions 2 are all used to contact the outer wall of the magnet.

[0025] Multiple first protrusions 1 are arranged at intervals along a straight line, and multiple second protrusions 2 are also arranged at intervals along a straight line; furthermore, the first protrusions 1 and the second protrusions 2 are staggered.

[0026] The magnet fixing structure also includes a limiting angle assembly 3, which is also used to contact the outer wall of the magnet; at both ends of the magnet groove 6 along the length direction (i.e., as shown in the image) Figure 3 As shown, the topmost magnetic steel groove 6 has two limiting angle components 3 on both its left and right ends (which are the two ends of its length direction), and the two limiting angle components 3 at each end of the magnetic steel groove 6 are symmetrically arranged.

[0027] The limiting angle assembly 3 includes a first limiting angle 31 and a second limiting angle 32. The cross-section of the first limiting angle 31 and the second limiting angle 32 is a triangular structure. The first limiting angle 31, the second limiting angle 32 and the inner wall of the magnet groove 6 form a receiving groove 4. The receiving groove 4 can completely accommodate the corner of the magnet. Since four limiting angle assemblies 3 are provided, four receiving grooves 4 are formed. The four corners of the magnet are respectively placed in the four receiving grooves 4. Furthermore, the corners of the magnet do not completely fill the receiving grooves 4.

[0028] The magnet fixing structure also includes an arc-shaped protrusion 5. The magnetic steel groove 6 of the rotor core is provided with arc-shaped protrusions 5 at both ends along the length direction. The arc-shaped protrusions 5 are also used to contact the outer wall of the magnet. Specifically, an arc-shaped protrusion 5 is provided between each set of two symmetrically arranged limiting angle components 3. The arc-shaped protrusion 5 is specifically arranged between the two symmetrically arranged second limiting angles 32.

[0029] In this embodiment, when the magnet is installed inside the magnet slot 6, the first protrusion 1 and the second protrusion 2 contact the opposite outer walls of the magnet. At the same time, the first limiting angle 31, the second limiting angle 32 and the arc-shaped protrusion 5 contact the outer wall of the magnet to achieve good and precise positioning of the magnet and ensure that the installation angle of the magnet will not deviate. Then, by filling the gap between the magnet and the magnet slot 6 with glue, the magnet can be fixed.

[0030] Example 2 See again Figure 2 andFigure 4 Based on Embodiment 1, this embodiment has an even number of first protrusions 1, and four first protrusions 1 and five second protrusions 2 are provided on the inner wall of the magnetic steel groove 6. The first protrusions 1 and the second protrusions 2 can be set as triangular structures and have rounded corners. The rounded corners are used to contact the outside of the magnet, thereby helping to reduce wear on the magnet when installing it.

[0031] Example 3 This embodiment also provides a permanent magnet motor, which includes the magnet fixing structure in Embodiment 2.

[0032] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

Claims

1. A magnet fixing structure, characterized in that, include: The first protrusion (1) has multiple protrusions; The second protrusion (2) has multiple protrusions; Limiting angle assembly (3): Two limiting angle assemblies (3) are provided at both ends of the magnet slot of the rotor core along the length direction. The first protrusion (1) and the second protrusion (2) are respectively set on the inner walls of opposite sides of the magnet slot of the rotor core, and the first protrusion (1), the second protrusion (2) and the limiting angle assembly (3) are all used to contact the outer wall of the magnet.

2. The magnet fixing structure according to claim 1, characterized in that, The limiting angle component (3) includes: The first limiting angle (31) is used to contact the outer wall of the magnet; The second limiting angle (32) is used to contact the outer wall of the magnet.

3. The magnet fixing structure according to claim 2, characterized in that, Two limiting angle components (3) are symmetrically arranged at each end of the magnet slot of the rotor core along the length direction.

4. The magnet fixing structure according to claim 2, characterized in that, The first limiting angle (31) and the second limiting angle (32) form a receiving groove (4) between the magnetic steel slot of the rotor core and the receiving groove (4) to accommodate the corner of the magnet.

5. The magnet fixing structure according to claim 1, characterized in that, It also includes arc-shaped protrusions (5). Arc-shaped protrusions (5) are provided at both ends of the magnetic steel slots of the rotor core along the length direction. The arc-shaped protrusions (5) are used to contact the outer wall of the magnet.

6. The magnet fixing structure according to claim 1, characterized in that, Multiple first protrusions (1) are arranged at intervals along a straight line.

7. A magnet fixing structure according to claim 6, characterized in that, The number of the first protrusion (1) is an even number.

8. A magnet fixing structure according to claim 6, characterized in that, Multiple second protrusions (2) are arranged at intervals along a straight line.

9. A magnet fixing structure according to claim 8, characterized in that, The first protrusion (1) and the second protrusion (2) are staggered.

10. A permanent magnet motor, characterized in that, Includes the magnet fixing structure as described in any one of claims 1-9.

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