Stator structural member of stable permanent magnet motor

Abstract

The utility model discloses a stable permanent magnet motor stator structural member which comprises a plurality of stator laminations which are stacked together, the inner wall of each stator lamination is provided with a plurality of integrated tooth portions, and the surfaces of the two sides of each tooth portion are provided with limiting grooves. Two side gaps are symmetrically formed in the outer wall of each stator lamination; the motor further comprises a clamping structure arranged at the side notch, the clamping structure comprises a side base strip embedded into the inner side of the side notch, the upper end and the lower end of the side base strip are each rotationally provided with a clamping strip, and the two clamping strips are pressed on the surfaces of the uppermost stator lamination and the lowermost stator lamination respectively; according to the utility model, the clamping structure is ingeniously designed on the conventional permanent magnet motor stator structural member, and a stable locking and clamping effect can be formed after a plurality of stator laminations are laminated, so that the connection strength between the laminations is enhanced, and the separation phenomenon caused by factors such as adhesive aging and temperature change in the later period is effectively prevented.

Description

A stable permanent magnet motor stator structure component Technical Field

[0001] This utility model belongs to the field of motor stator technology, specifically relating to a stable permanent magnet motor stator structure. Background Technology

[0002] As an important component of modern electric drive systems, permanent magnet motors are widely used in electric vehicles, wind power generation, industrial automation, and other fields due to their high efficiency, high power density, and good speed regulation performance. For example, the existing patent with publication number CN209150813U discloses "a permanent magnet motor stator structure, including a stator core and a mounting bracket, with a mounting hole in the middle of the stator core, the mounting hole being a circular through hole, and the mounting bracket being set in the mounting hole of the stator core, the mounting hole and the mounting bracket being interference fit". It can be seen that the stator structure described in this application is a common permanent magnet motor stator structure. As one of the core components of a permanent magnet motor, the stator's structural design directly affects the motor's performance and service life. Traditional permanent magnet motor stators are usually composed of multiple stator laminations stacked together, which are fixed by adhesives or riveting to form a complete stator core.

[0003] However, in practical applications, the traditional permanent magnet motor stator structure has some problems, especially during long-term operation or under heavy mechanical loads. The stator laminations are prone to delamination or separation, which not only reduces the electromagnetic performance of the motor, but also the teeth of the permanent magnet motor stator laminations are the key parts for the installation of copper wire windings. The copper wire is wound on the teeth through a specific winding process to form the electromagnetic circuit of the motor. Traditional winding methods often rely on simple mechanical clamping or adhesive fixing. This fixing method is easily affected by external factors during motor operation, causing the copper wire windings to slip, affecting the tight fit between the windings and the stator teeth, and thus reducing the efficiency and reliability of the motor. Therefore, this utility model proposes a stable permanent magnet motor stator structure. Summary of the Invention

[0004] The purpose of this invention is to provide a stable permanent magnet motor stator structure to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a stable permanent magnet motor stator structure, comprising...

[0006] Multiple stator laminations are stacked together, and each stator lamination has multiple integrated teeth on its inner wall, with limit grooves on both sides of the teeth.

[0007] Each stator lamination has two symmetrical side notches on its outer wall;

[0008] It also includes a locking structure set at the side notch, the locking structure including a side base strip embedded in the inside of the side notch, the upper and lower ends of the side base strip are rotatably mounted with locking strips, and the two locking strips press against the uppermost and lowermost stator lamination surfaces respectively.

[0009] Preferably, the positioning structure further includes a positioning rod, and each of the stator laminations has a through hole on one side of its surface opposite to the side notch for the positioning rod to pass through, and the positioning rod is inserted into the through hole.

[0010] Preferably, the locking structure further includes a locking connection structure disposed between the positioning rod and the locking strip.

[0011] Preferably, the engaging connection structure includes an inner groove inside the positioning rod, a spring and a telescopic locking bead installed in the inner groove, and a circular locking groove on the inner surface of the locking strip corresponding to the telescopic locking bead. The telescopic locking bead is movably installed in the inner groove by the spring, and the end of the telescopic locking bead pops out into the circular locking groove.

[0012] Preferably, one end of the spring is fixed to the inner wall of the inner groove, and the other end of the spring is fixedly connected to the telescopic ball.

[0013] Preferably, both ends of the positioning rod are provided with pop-out holes for the telescopic locking bead to pop out, and the pop-out holes communicate with the inner groove.

[0014] Preferably, both ends of the side base strip are fixed with shafts, and the locking strip is rotatably sleeved on the surface of the shafts.

[0015] Preferably, the end of the shaft extends through to the outer surface of the locking strip and is fixed with a circular seat.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows: This utility model ingeniously designs a locking structure on the existing permanent magnet motor stator structure, which can form a stable locking effect after multiple stator laminations are stacked. This not only enhances the connection strength between the laminations and effectively prevents separation caused by factors such as adhesive aging and temperature changes in the later stage, but also simplifies the stator assembly process. At the same time, this utility model opens a limiting groove on the teeth of the stator laminations. During the winding process, the copper wire is guided into the limiting groove, which can effectively prevent the winding from slipping in subsequent use and further improve stability. Attached Figure Description

[0017] Figure 1 is a schematic diagram of the structure of this utility model;

[0018] Figure 2 is a partial enlarged view of region A in Figure 1 of this utility model;

[0019] Figure 3 is a cross-sectional view of the card slot structure of this utility model;

[0020] In the diagram: 1. Stator laminations; 11. Perforation; 2. Tooth; 21. Limiting groove; 3. Side notch; 5. Locking structure; 51. Side base strip; 52. Circular seat; 53. Locking strip; 54. Shaft; 55. Inner groove; 56. Spring; 57. Positioning rod; 58. Telescopic locking ball; 59. Circular slot. Detailed Implementation

[0021] 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.

[0022] Example

[0023] Please refer to Figures 1 to 3, which illustrate an embodiment of this utility model. This embodiment provides a technical solution: a stable permanent magnet motor stator structure, comprising...

[0024] Multiple stator laminations 1 are stacked together, and each stator lamination 1 has multiple integrated teeth 2 on its inner wall. Limiting grooves 21 are opened on both sides of the teeth 2, so that the copper wire can be guided into the limiting grooves 21 during the subsequent winding process, thereby preventing the copper wire winding from slipping in subsequent use and further improving stability.

[0025] Each stator lamination 1 has two symmetrical side notches 3 on its outer wall;

[0026] It also includes a locking structure 5 set at the side notch 3. The locking structure 5 includes a side base strip 51 embedded in the side notch 3. The upper and lower ends of the side base strip 51 are rotatably mounted with locking strips 53. The two locking strips 53 press on the surfaces of the uppermost and lowermost stator laminations 1 respectively. This can block and lock multiple stator laminations 1 stacked together, enhance the connection strength between the laminations, and effectively prevent separation caused by factors such as adhesive aging and temperature changes in the later stage.

[0027] In this embodiment, preferably, the locking structure 5 further includes a positioning rod 57. Each stator lamination 1 has a through hole 11 on one side of its surface opposite to the side notch 3 for the positioning rod 57 to pass through. The positioning rod 57 is inserted into the through hole 11, which can lock each stator lamination 1 in the horizontal direction and prevent the stator lamination 1 from sliding horizontally. Thus, multiple stator laminations 1 are strung together by two positioning rods 57.

[0028] In this embodiment, preferably, the locking structure 5 further includes a locking connection structure disposed between the positioning rod 57 and the locking strip 53. The locking connection structure includes an inner groove 55 opened inside the positioning rod 57, a spring 56 and a telescopic locking ball 58 installed in the inner groove 55, and a circular locking groove 59 opened on the inner surface of the locking strip 53 and corresponding to the telescopic locking ball 58. The telescopic locking ball 58 is movably installed in the inner groove 55 by the spring 56, and the end of the telescopic locking ball 58 pops out into the circular locking groove 59, which can lock and limit the locking strip 53, so that the locking strip 53 will not rotate and move away on its own, thus ensuring the limiting stability of the stator lamination 1.

[0029] In this embodiment, preferably, one end of the spring 56 is fixed to the inner wall of the inner groove 55, and the other end of the spring 56 is fixedly connected to the telescopic locking bead 58.

[0030] In this embodiment, preferably, both ends of the positioning rod 57 are provided with pop-out holes for the ends of the telescopic locking beads 58 to pop out, and the pop-out holes communicate with the inner groove 55, so that the ends of the telescopic locking beads 58 can be smoothly popped out from the surface of the positioning rod 57.

[0031] In this embodiment, preferably, both ends of the side base strip 51 are fixed with shafts 54, and the locking strip 53 is rotatably sleeved on the surface of the shafts 54. The end of the shaft 54 ​​extends through to the outer surface of the locking strip 53 and is fixed with a circular seat 52, so that the locking strip 53 can rotate smoothly around the shafts 54.

[0032] Although embodiments of the present invention have been shown and described (see the detailed description above), it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A stable permanent magnet motor stator structural component, characterized in that: It includes multiple stator laminations (1) stacked together, and each stator lamination (1) has multiple integral teeth (2) on its inner wall. The teeth (2) have limit grooves (21) on both sides. Each stator lamination (1) has two symmetrical side notches (3) on its outer wall. It also includes a locking structure (5) set at the side notches (3). The locking structure (5) includes a side base strip (51) embedded in the side notch (3). The upper and lower ends of the side base strip (51) are rotatably mounted with locking strips (53), and the two locking strips (53) press against the surfaces of the uppermost and lowermost stator laminations (1) respectively.

2. The stable permanent magnet motor stator structure according to claim 1, characterized in that: The positioning structure (5) also includes a positioning rod (57). Each stator lamination (1) has a through hole (11) on one side of its surface relative to the side notch (3) for the positioning rod (57) to pass through. The positioning rod (57) is inserted into the through hole (11).

3. A stable permanent magnet motor stator structure according to claim 2, characterized in that: The locking structure (5) also includes a locking connection structure disposed between the positioning rod (57) and the locking strip (53).

4. A stable permanent magnet motor stator structure according to claim 3, characterized in that: The engaging connection structure includes an inner groove (55) inside the positioning rod (57), a spring (56) and a telescopic locking bead (58) installed in the inner groove (55), and a circular locking groove (59) on the inner surface of the locking strip (53) corresponding to the telescopic locking bead (58). The telescopic locking bead (58) is movably installed in the inner groove (55) by the spring (56), and the end of the telescopic locking bead (58) pops out into the circular locking groove (59).

5. A stable permanent magnet motor stator structure according to claim 4, characterized in that: One end of the spring (56) is fixed to the inner wall of the inner groove (55), and the other end of the spring (56) is fixedly connected to the telescopic bead (58).

6. A stable permanent magnet motor stator structure according to claim 4, characterized in that: Both ends of the positioning rod (57) are provided with pop-out holes for the ends of the telescopic ball (58) to pop out, and the pop-out holes are connected to the inner groove (55).

7. A stable permanent magnet motor stator structure according to claim 1, characterized in that: Both ends of the side base strip (51) are fixed with shafts (54), and the locking strip (53) is rotatably sleeved on the surface of the shaft (54).

8. A stable permanent magnet motor stator structure according to claim 7, characterized in that: The end of the shaft (54) extends through to the outer surface of the locking strip (53) and is fixed with a circular seat (52).

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