A magnet motor stator structure convenient to process

Abstract

The utility model discloses a kind of magnetoelectric machine stator structures facilitating processing, relate to magnetoelectric machine stator technical field, including first stator framework, second stator framework and third stator framework, the first stator framework, second stator framework and third stator framework are all provided with clamping block and dovetail groove, and the inside of first stator framework, second stator framework and third stator framework are all installed with winding group, the winding group is all installed with coil;The first stator framework, second stator framework and third stator framework are all set with heat dissipation hole, and first fin is installed on heat dissipation hole, second fin is sleeved on the first fin.The magnetoelectric machine stator structure facilitating processing, heat dissipation hole cooperation first fin and second fin, form multilayer heat dissipation structure, expand heat dissipation area, effectively reduce stator operating temperature, delay winding insulation aging, improve magnetoelectric machine service life.

Description

Technical Field

[0001] This utility model relates to the field of magneto stator technology, specifically to a magneto stator structure that is easy to manufacture. Background Technology

[0002] Magneto motors, as important devices for converting mechanical energy into electrical energy, are widely used in motorcycles, small engines, power tools, and other fields, and the magneto stator is an indispensable core component. The magneto stator mainly plays the key role of inducing electromotive force and generating electrical energy. When the rotor of the magneto rotates around the stator, the magnetic field generated by the permanent magnets on the rotor changes periodically. Under the influence of this changing magnetic field, the iron core and winding coils in the stator generate an induced electromotive force according to the principle of electromagnetic induction, and thus output electrical energy.

[0003] For example, Chinese utility model patent application number 201920312248.X discloses a stator lamination for easy heat dissipation. After the stator laminations are stacked into a stator core, the stator core is connected to the motor housing through a mounting slot. The stator core contacts the motor housing through protrusions, and the stator core and motor housing still have the function of heat transfer. Furthermore, there is a gap between the outer wall of the stator core and the motor housing, which facilitates air circulation and carries away some of the heat generated by the stator core, thus accelerating the heat dissipation speed. However, this device still has certain shortcomings.

[0004] Simply using heat dissipation holes to cool the stator assembly is insufficient to meet the heat dissipation requirements of the magneto under high-load operating conditions. This will cause the internal temperature of the stator to rise continuously. Excessive temperature will accelerate the aging of the winding insulation material, reduce insulation performance, increase the risk of short circuits, and seriously affect the service life and operational reliability of the magneto.

[0005] Therefore, we propose a magneto stator structure that is easy to manufacture in order to solve the problems mentioned above. Utility Model Content

[0006] The purpose of this invention is to provide a magneto stator structure that is easy to manufacture, in order to solve the problem mentioned in the background art that the current market only uses heat dissipation holes to dissipate heat from the stator assembly, which is difficult to meet the heat dissipation requirements of the magneto under high load operation conditions. This causes the internal temperature of the stator to rise continuously, and the excessively high temperature will accelerate the aging of the winding insulation material, reduce the insulation performance, increase the risk of short circuit, and seriously affect the service life and operational reliability of the magneto.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a magneto stator structure that is easy to process, comprising a first stator frame, a second stator frame, and a third stator frame, wherein the first stator frame, the second stator frame, and the third stator frame are each provided with snap-fit ​​blocks and dovetail grooves, and winding assemblies are installed inside the first stator frame, the second stator frame, and the third stator frame, wherein coils are installed on the winding assemblies;

[0008] The first stator frame, the second stator frame, and the third stator frame are all provided with heat dissipation holes, and a first heat sink is installed on the heat dissipation hole, and a second heat sink is sleeved on the first heat sink.

[0009] Preferably, the snap-fit ​​block is fixedly connected to the first stator frame, the second stator frame, and the third stator frame, and the snap-fit ​​block is snapped into the dovetail grooves on the first stator frame, the second stator frame, and the third stator frame.

[0010] With the above structural design, the snap-fit ​​block is fixedly snapped into the dovetail groove, making the structure of the first stator frame, the second stator frame, and the third stator frame firmly assembled, preventing loosening during operation and ensuring the overall stability of the stator.

[0011] Preferably, the first stator frame, the second stator frame, and the third stator frame are each provided with an arc-shaped groove and an arc-shaped protrusion. The arc-shaped protrusion is fixedly connected to the first stator frame, the second stator frame, and the third stator frame, and the arc-shaped protrusion is engaged with the arc-shaped groove.

[0012] The above structural design, with the arc-shaped protrusions and arc-shaped grooves engaging, reduces stress concentration between the frames during splicing, improves the overall stiffness of the stator, enhances vibration resistance, and extends service life.

[0013] Preferably, the heat dissipation hole has a snap-fit ​​groove on both the left and right sides, the second heat dissipation plate snaps into the snap-fit ​​groove, and the second heat dissipation plate abuts tightly against the inner wall of the snap-fit ​​groove.

[0014] With the above structural design, the snap-fit ​​slots on both sides of the heat dissipation hole snap into the second heat sink, forming a multi-layer heat dissipation structure with the first heat sink, thereby increasing the heat dissipation area and accelerating heat dissipation.

[0015] Preferably, the lower surface of the second heat sink is provided with a U-shaped groove, and the width of the U-shaped groove is greater than the thickness of the first heat sink.

[0016] With the above structural design, the U-shaped groove on the lower surface of the second heat sink fits onto the first heat sink and abuts against the snap-fit ​​groove. During installation, it can be accurately positioned without tools, improving the convenience of installing the second heat sink.

[0017] Preferably, threaded grooves are provided on both the left and right sides of the lower surface of the second heat sink, and a limiting plate is provided on the lower surface of the second heat sink.

[0018] With the above structural design, the threaded groove on the lower surface of the second heat sink cooperates with the limiting plate to limit the second heat sink after installation and prevent the second heat sink from shifting.

[0019] Preferably, the limiting plate has a through hole, the center line of the through hole coincides with the center line of the threaded groove, and a limiting bolt passes through the through hole on the limiting plate, the limiting bolt being connected to the threaded groove.

[0020] With the above structural design, the limiting bolt passes through the through hole of the limiting plate and connects with the threaded groove, which not only fixes the second heat sink, but also facilitates disassembly and maintenance, thus achieving a lightweight stator design.

[0021] Compared with the prior art, the beneficial effects of this utility model are: the easy-to-manufacture magneto stator structure:

[0022] 1. High-efficiency heat dissipation system: The heat dissipation holes, together with the first and second heat dissipation fins, form a multi-layer heat dissipation structure, which expands the heat dissipation area, effectively reduces the stator operating temperature, delays the aging of the winding insulation, and improves the service life of the magneto.

[0023] 2. Splicing Design: The first stator frame, the second stator frame, and the third stator frame are snapped together with dovetail grooves via snap-fit ​​blocks. Then, multiple first stator frames, second stator frames, and third stator frames are stacked and press-fitted to form a complete stator structure. No welding is required, which facilitates processing. Attached Figure Description

[0024] Figure 1 This is a top view of the structure of this utility model;

[0025] Figure 2 This is a schematic diagram of the overall structure of the second heat sink of this utility model after disassembly;

[0026] Figure 3 This utility model Figure 2 Enlarged structural diagram at point A in the middle;

[0027] Figure 4 This is a schematic diagram of the structure of the first and second heat sinks of this utility model during installation;

[0028] Figure 5 This is a schematic diagram of the structure of the first and second heat sinks after disassembly.

[0029] Figure 6 This is a schematic diagram of the structure of Embodiment 2 of this utility model.

[0030] In the diagram: 1. First stator frame; 2. Second stator frame; 3. Third stator frame; 4. Snap-fit ​​block; 5. Dovetail groove; 6. Arc groove; 7. Arc protrusion; 8. Winding assembly; 9. Coil; 10. Heat dissipation hole; 11. First heat sink; 12. Snap-fit ​​groove; 13. Second heat sink; 14. U-shaped groove; 15. Threaded groove; 16. Limiting plate; 17. Through hole; 18. Limiting bolt. Detailed Implementation

[0031] 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. Example

[0032] Please see Figures 1-5 This utility model provides a technical solution: a magneto stator structure that is easy to process, including a first stator frame 1, a second stator frame 2, a third stator frame 3, a snap-fit ​​block 4, a dovetail groove 5, a winding assembly 8, a coil 9, a heat dissipation hole 10, a first heat sink 11, a snap-fit ​​groove 12, a second heat sink 13, a U-shaped groove 14, a threaded groove 15, a limiting plate 16, a through hole 17, and a limiting bolt 18. The first stator frame 1, the second stator frame 2, and the third stator frame 3 are all provided with snap-fit ​​blocks 4 and dovetail grooves 5. The snap-fit ​​blocks 4 are fixedly connected to the first stator frame 1, the second stator frame 2, and the third stator frame 3, forming a snap-fit ​​connection. Block 4 engages with the dovetail grooves 5 on the first stator frame 1, the second stator frame 2, and the third stator frame 3. The first stator frame 1, the second stator frame 2, and the third stator frame 3 are engaged with the dovetail grooves 5 via the engaging block 4. Then, multiple first stator frames 1, second stator frames 2, and third stator frames 3 are stacked and press-fitted to form a complete stator structure. No welding is required, which facilitates processing. When the coil 9 on the winding group 8 is energized, electromagnetic induction is generated. The winding group 8 is installed inside the first stator frame 1, the second stator frame 2, and the third stator frame 3, and the coil 9 is installed on the winding group 8.

[0033] The first stator frame 1, the second stator frame 2, and the third stator frame 3 are all provided with heat dissipation holes 10, and a first heat sink 11 is installed on the heat dissipation hole 10. A second heat sink 13 is fitted onto the first heat sink 11. A snap-fit ​​groove 12 is provided on both the left and right sides of the heat dissipation hole 10. The second heat sink 13 snaps into the snap-fit ​​groove 12, and the second heat sink 13 abuts tightly against the inner wall of the snap-fit ​​groove 12. The heat dissipation hole 10, in conjunction with the first heat sink 11, achieves heat dissipation for the stator. Adding the second heat sink 13 increases the heat dissipation area and accelerates heat dissipation. A U-shaped groove 14 is provided on the lower surface of the second heat sink 13, and the width of the U-shaped groove 14 is greater than the thickness of the first heat sink 11. When installing the second heat sink 13, the U-shaped groove 14 on the second heat sink 13 is aligned with the first heat sink 11, and the second heat sink 13 is fitted onto the first heat sink 11 through the U-shaped groove 14. The lower surface of the heat sink 13 has threaded grooves 15 on both the left and right sides, and a limiting plate 16 is provided on the lower surface of the second heat sink 13. The limiting plate 16 limits the second heat sink 13 after installation. The limiting plate 16 has a through hole 17, the center line of which coincides with the center line of the threaded groove 15. A limiting bolt 18 passes through the through hole 17 and is connected to the threaded groove 15. After the second heat sink 13 is fitted onto the first heat sink 11, the limiting plate 16 is pressed against the lower surface of the second heat sink 13, so that the threaded groove 15 on the second heat sink 13 is aligned with the through hole 17 on the limiting plate 16. Then, the limiting plate 16 is fixed by the connection between the limiting bolt 18 and the threaded groove 15, thus limiting the second heat sink 13 and facilitating the disassembly of the second heat sink 13, achieving the weight reduction of the stator. Example

[0034] Please see Figure 6 This utility model provides a technical solution: a magneto stator structure that is easy to process, including an arc-shaped groove 6 and an arc-shaped protrusion 7. The difference between this embodiment and Embodiment 1 is that:

[0035] The first stator frame 1, the second stator frame 2, and the third stator frame 3 are all provided with arc-shaped grooves 6 and arc-shaped protrusions 7. The arc-shaped protrusions 7 are fixedly connected to the first stator frame 1, the second stator frame 2, and the third stator frame 3. The arc-shaped protrusions 7 are engaged with the arc-shaped grooves 6. When splicing the first stator frame 1, the second stator frame 2, and the third stator frame 3, the arc-shaped protrusions 7 are embedded in the arc-shaped grooves 6, making the splicing of the first stator frame 1, the second stator frame 2, and the third stator frame 3 more convenient, reducing stress concentration, and improving the overall rigidity of the stator.

[0036] Working principle: When using this easy-to-process magneto stator structure, firstly, the first stator frame 1, the second stator frame 2, and the third stator frame 3 are snapped into the dovetail groove 5 by the snap-fit ​​block 4. Then, multiple first stator frames 1, second stator frames 2, and third stator frames 3 are stacked and pressed to form a complete stator structure. No welding is required, which facilitates processing. When the coil 9 on the winding group 8 is energized, electromagnetic induction is generated.

[0037] The heat dissipation hole 10, in conjunction with the first heat sink 11, achieves heat dissipation for the stator. Adding the second heat sink 13 increases the heat dissipation area and accelerates heat dissipation. When installing the second heat sink 13, align the U-shaped groove 14 on the second heat sink 13 with the first heat sink 11, and then fit the second heat sink 13 onto the first heat sink 11 through the U-shaped groove 14. Next, a limiting plate 16 is placed against the lower surface of the second heat sink 13, aligning the threaded groove 15 on the second heat sink 13 with the through hole 17 on the limiting plate 16. The limiting plate 16 is then fixed by connecting the limiting bolt 18 to the threaded groove 15, thus limiting the position of the second heat sink 13 and facilitating its disassembly, achieving stator weight reduction, and completing a series of tasks. Content not described in detail in this specification belongs to prior art known to those skilled in the art.

[0038] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. 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 magneto stator structure that is easy to manufacture, comprising a first stator frame (1), a second stator frame (2), and a third stator frame (3), characterized in that: The first stator frame (1), the second stator frame (2) and the third stator frame (3) are all provided with snap-fit ​​blocks (4) and dovetail grooves (5), and the first stator frame (1), the second stator frame (2) and the third stator frame (3) are all equipped with winding groups (8), and the winding groups (8) are all equipped with coils (9). The first stator frame (1), the second stator frame (2) and the third stator frame (3) are all provided with heat dissipation holes (10), and a first heat sink (11) is installed on the heat dissipation hole (10), and a second heat sink (13) is sleeved on the first heat sink (11).

2. The easily manufacturable magneto stator structure according to claim 1, characterized in that: The snap-fit ​​block (4) is fixedly connected to the first stator frame (1), the second stator frame (2), and the third stator frame (3), and the snap-fit ​​block (4) is snapped into the dovetail groove (5) on the first stator frame (1), the second stator frame (2), and the third stator frame (3).

3. The easily manufacturable magneto stator structure according to claim 1, characterized in that: The first stator frame (1), the second stator frame (2) and the third stator frame (3) are all provided with arc grooves (6) and arc protrusions (7). The arc protrusions (7) are fixedly connected to the first stator frame (1), the second stator frame (2) and the third stator frame (3), and the arc protrusions (7) are engaged with the arc grooves (6).

4. The easily manufacturable magneto stator structure according to claim 1, characterized in that: The heat dissipation hole (10) has a snap-fit ​​groove (12) on both the left and right sides. The second heat dissipation plate (13) snaps into the snap-fit ​​groove (12), and the second heat dissipation plate (13) is tightly abutted against the inner wall of the snap-fit ​​groove (12).

5. The easy-to-manufacture magneto stator structure according to claim 4, characterized in that: The lower surface of the second heat sink (13) is provided with a U-shaped groove (14), and the width of the U-shaped groove (14) is greater than the thickness of the first heat sink (11).

6. The easily manufacturable magneto stator structure according to claim 5, characterized in that: The lower surface of the second heat sink (13) is provided with threaded grooves (15) on both the left and right sides, and a limit plate (16) is provided on the lower surface of the second heat sink (13).

7. The easily manufacturable magneto stator structure according to claim 6, characterized in that: The limiting plate (16) has a through hole (17), the center line of the through hole (17) coincides with the center line of the thread groove (15), and a limiting bolt (18) passes through the through hole (17) on the limiting plate (16), and the limiting bolt (18) is connected to the thread groove (15).

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