Self-locking spliced motor stator

Abstract

The present application relates to a kind of self-locking spliced motor stator, belong to motor stator technical field, comprising: multiple sub-block stator, multiple sub-block stator are arc structure, the first end of multiple sub-block stator arc direction is all fixed with self-locking piece and its arc direction second end is all equipped with self-locking slot, multiple sub-block stator is adjacent along annular direction Arrangement and multiple self-locking pieces are locked in adjacent self-locking slot respectively.The present application is by being respectively arranged self-locking piece and self-locking slot in the arc shape both ends of each sub-block stator, so that multiple sub-block stator can be by the engagement of self-locking piece and adjacent self-locking slot when being spliced in turn along annular direction, realize quick assembly and mechanical interlock, not only need additional fastener, significantly improve installation efficiency, also can eliminate splicing gap by close cooperation, ensure magnetic circuit continuity and structural integrity stability, effectively inhibit vibration and electromagnetic noise, comprehensively improve the electromagnetic performance of motor, running stability and product reliability.

Description

Technical Field

[0001] This invention relates to the field of motor stator technology, and in particular to a self-locking splicing motor stator. Background Technology

[0002] The modular design of motor stators is an important means to improve the manufacturability of motors and reduce production difficulty. By dividing the integral stator into multiple independent modules, not only can stamping dies be simplified and the utilization rate of silicon steel sheets be improved, but automated winding can also be achieved, significantly increasing production efficiency. However, how to reliably connect the modular stators has always been a bottleneck restricting the widespread application of this technology.

[0003] Regarding the connection structure, the existing splicing methods have obvious defects: ① Although bolted connections are relatively reliable, additional fasteners are required, which not only increases costs and assembly complexity, but also occupies limited internal space of the stator; ② Although snap-fit ​​connections are simple in structure, they are prone to fatigue loosening under the influence of alternating electromagnetic fields and thermal stress during long-term operation, affecting the reliability of the motor; ③ Although welded connections can provide high connection strength, the weld position is often difficult to avoid high magnetic density areas—taking the traditional dovetail stator segmentation as an example, the welding point is located in the area with the densest magnetic field density, resulting in a significant increase in iron loss and an increased risk of magnetic leakage, making it difficult to meet the high efficiency requirements of permanent magnet synchronous motors.

[0004] Therefore, how to design a self-locking splicing motor stator that is accurate in positioning, high in splicing precision, has good vibration resistance, is firmly connected, is not easy to loosen, and significantly improves electromagnetic efficiency is a problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0005] This invention provides a self-locking splicing motor stator, which solves the technical problems of existing segmented stator splicing structures occupying limited space, having weak splicing, and being difficult to avoid the densest magnetic field.

[0006] The technical solution of the present invention to solve the above-mentioned technical problems is as follows: a self-locking splicing motor stator, comprising: multiple segmented stators, each of the multiple segmented stators having an arc-shaped structure, each of the multiple segmented stators having a self-locking component fixed at its first end in the arc direction and a self-locking groove provided at its second end in the arc direction, the multiple segmented stators being arranged adjacently along the annular direction and the multiple self-locking components being locked in the adjacent self-locking grooves respectively, so that the multiple segmented stators are firmly spliced ​​into a motor stator.

[0007] The beneficial effects of this invention are as follows: by setting self-locking components and self-locking grooves at the arc-shaped ends of each segmented stator, multiple segmented stators can be quickly assembled and mechanically interlocked by engaging the self-locking components with adjacent self-locking grooves when they are sequentially spliced ​​along the annular direction. This not only eliminates the need for additional fasteners and significantly improves installation efficiency, but also eliminates splicing gaps through close cooperation, ensuring the continuity of the magnetic circuit and the overall stability of the structure, effectively suppressing vibration and electromagnetic noise, and comprehensively improving the electromagnetic performance, running stability and product reliability of the motor.

[0008] Based on the above technical solution, the present invention can be further improved as follows.

[0009] Furthermore, the longitudinal sections of the plurality of self-locking components and the plurality of self-locking grooves are all spherical structures.

[0010] The further beneficial effects of adopting the above-mentioned design are as follows: designing multiple self-locking components and multiple self-locking grooves as spherical structures not only provides good self-guiding properties during the splicing process and can automatically correct assembly deviations, making installation smoother and more efficient; at the same time, the spherical contact can evenly distribute the locking force, avoiding local stress concentration, thereby enhancing the impact resistance and structural strength of the connection; in addition, the spherical fit also gives the connection a certain degree of multi-directional adaptive adjustment capability, which can effectively compensate for small displacements caused by thermal expansion and contraction or electromagnetic forces, avoid rigid damage, and reduce wear during assembly and operation, thereby significantly extending the service life of the stator.

[0011] Furthermore, each of the multiple segmented stators has a slot on its concave arc surface near its first end and a block is fixed at its second end. The multiple blocks are arranged along the arc direction of the corresponding segmented stator and are inserted into the adjacent slots to improve the tightness of the splicing of the multiple segmented stators.

[0012] The further beneficial effects of adopting the above are: by inserting multiple plug-in blocks into adjacent plug-in slots, not only are the adjacent stator blocks limited, but the gaps at the joints are also eliminated. Double fixation is achieved on the basis of self-locking connection, which significantly improves the tightness and overall rigidity of splicing, effectively reduces the uneven magnetic resistance and electromagnetic noise caused by splicing seams, and optimizes the electromagnetic performance and running stability of the motor.

[0013] Furthermore, it also includes multiple yokes, which are integrally formed on the concave arc-shaped sides of the multiple segmented stators; the multiple self-locking grooves are respectively arranged opposite to the multiple yokes to reduce interference with the magnetic flux path and reduce magnetic resistance and energy loss.

[0014] The further beneficial effects of adopting the above are: by arranging multiple self-locking slots opposite to multiple yokes, the self-locking slots, as connecting structures, avoid the main magnetic flux path, minimizing the interference of the splicing structure on the magnetic circuit, thereby effectively reducing energy loss and improving motor efficiency and electromagnetic stability.

[0015] Furthermore, the centerlines of the multiple self-locking slots are arranged at an angle α with the direction of the corresponding segmented stator arc.

[0016] The further beneficial effects of adopting the above-mentioned method are as follows: The inclined arrangement of the self-locking slot opening allows the self-locking component to generate an oblique clamping force during locking, providing locking along the arc direction and generating a preload component in the radial direction. This enhances the bonding force between adjacent stator segments and effectively prevents axial movement and radial loosening. Simultaneously, the inclined slot structure can adapt to the multi-directional electromagnetic forces and thermal stresses generated during motor operation, improving the fatigue resistance and stability of the connection, and helping to disperse local stress in the locking area, thus enhancing the reliability of the spliced ​​structure.

[0017] Furthermore, the included angle α is 40–60°. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of a self-locking splicing motor stator according to the present invention;

[0019] Figure 2 This invention relates to a self-locking splicing motor stator. The attached diagram lists the components represented by each number as follows: 1. Segmented stator; 11. Self-locking component; 12. Self-locking groove; 13. Insertion groove; 14. Insertion block; 2. Yoke. Detailed Implementation

[0020] The principles and features of the present invention are described below with reference to the accompanying drawings. The examples given are only for explaining the present invention and are not intended to limit the scope of the present invention.

[0021] like Figure 1 and Figure 2 As shown, a self-locking splicing motor stator includes: multiple segmented stators 1, each segmented stator 1 having an arc-shaped structure. Each segmented stator 1 has a self-locking component 11 fixed at its first end in the arc direction and a self-locking groove 12 provided at its second end in the arc direction. The multiple segmented stators 1 are arranged adjacent to each other in the annular direction, and the multiple self-locking components 11 are respectively locked in the adjacent self-locking grooves 12, so that the multiple segmented stators 1 are firmly spliced ​​into a motor stator.

[0022] like Figure 2 As shown, in some specific embodiments, the longitudinal sections of the multiple self-locking elements 11 and the multiple self-locking grooves 12 can all be spherical structures.

[0023] like Figure 2 As shown, in some specific embodiments, each of the multiple segmented stators 1 has a groove 13 on the concave arc surface near its first end and a plug block 14 is fixed at its second end. The multiple plug blocks 14 are arranged along the arc direction of the corresponding segmented stator 1 and are respectively plugged into the adjacent groove 13 to improve the tightness of the splicing of the multiple segmented stators 1.

[0024] like Figure 2 As shown, in some specific embodiments, it may also include multiple yokes 2, which are integrally formed on the concave arc-shaped sides of multiple segmented stators 1; multiple self-locking grooves 12 are respectively arranged opposite to the multiple yokes 2 to reduce interference with the magnetic flux path and reduce magnetic resistance and energy loss.

[0025] like Figure 2 As shown, in some specific embodiments, the center lines of the multiple self-locking slots 12 are arranged at an angle α with the arc direction of the corresponding segmented stator 1.

[0026] Specifically, the included angle α can be 40° to 60°. The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A self-locking, modular motor stator, characterized in that, include: Multiple segmented stators (1) are provided, each segmented stator (1) having an arc-shaped structure. Each segmented stator (1) has a self-locking component (11) fixed at its first end in the arc direction and a self-locking groove (12) provided at its second end in the arc direction. The multiple segmented stators (1) are arranged adjacent to each other in the annular direction and the multiple self-locking components (11) are locked in the adjacent self-locking grooves (12) respectively, so that the multiple segmented stators (1) are firmly spliced ​​together to form a motor stator.

2. The self-locking splicing motor stator according to claim 1, characterized in that, The longitudinal sections of the plurality of self-locking elements (11) and the plurality of self-locking grooves (12) are all spherical structures.

3. A self-locking splicing motor stator according to claim 1, characterized in that, Each of the multiple segmented stators (1) has a groove (13) on its concave arc surface near its first end and a plug (14) is fixed at its second end. The multiple plugs (14) are arranged along the arc direction of the corresponding segmented stator (1) and are respectively plugged into the adjacent groove (13) to improve the tightness of the splicing of the multiple segmented stators (1).

4. A self-locking splicing motor stator according to claim 1, characterized in that, It also includes multiple yokes (2), which are integrally formed on the concave arc side of the multiple segmented stators (1); multiple self-locking grooves (12) are arranged opposite to the multiple yokes (2) to reduce interference with the magnetic flux path and reduce magnetic resistance and energy loss.

5. A self-locking splicing motor stator according to claim 1, characterized in that, The centerlines of the slots of the multiple self-locking slots (12) are arranged at an angle α with the arc direction of the corresponding segmented stator (1).

6. A self-locking splicing motor stator according to claim 5, characterized in that, The included angle α is 40° to 60°.

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