AC stator core structure for motorcycle engine

Abstract

The utility model relates to the technical field of alternating current stator iron cores, and discloses an alternating current stator iron core structure for a motorcycle engine, which comprises an iron core assembly and an insulation assembly, the iron core assembly comprises an iron core combination formed by stacking a plurality of same iron core sheets, each iron core sheet is provided with an ignition tooth part and a plurality of illumination tooth parts, and the insulation assembly is provided with a plurality of lighting tooth parts. Pole arcs are arranged on the outer sides of the ignition tooth part and the illumination tooth part, and the ignition structure is characterized in that the width of the illumination tooth part is larger than that of the ignition tooth part, and the height of the ignition tooth part is larger than that of the illumination tooth part. The number of electric equipment of the whole motorcycle engine can be increased, and the problem that the heating temperature of a magneto coil is high is solved.

Description

Technical Field

[0001] This utility model relates to the field of AC stator core technology, specifically to an AC stator core structure for a motorcycle engine. Background Technology

[0002] The stator core is a crucial component of the stator and a major part of the motor's magnetic circuit. It consists of parts such as sector-shaped plates, ventilation slots, positioning ribs, upper and lower toothed pressure plates, tension bolts, and support plates. Stator cores are further divided into DC cores and AC cores. DC cores are characterized by a solid structure made from a single piece of steel, with tall, slender coils where heat is concentrated and primarily dissipated through coil cooling (e.g., by potting thermally conductive adhesive). AC cores, on the other hand, are constructed from laminated silicon steel sheets, resulting in short, wide coils. Both the core and coils generate heat, leading to thermal coupling, which is addressed primarily through core slot design and forced cooling.

[0003] Chinese patent document CN119315727A discloses a stator assembly for a motorcycle AC motor, including a stator body. The outer wall of the stator body is provided with multiple winding teeth, and a winding groove is provided between two adjacent winding teeth. The winding teeth include a charging ignition coil winding tooth and multiple charging lighting coil winding teeth. Each winding tooth is provided with an arc-shaped pole shoe at its top, and arc-shaped baffles are provided on both sides of the pole shoe. The outer wall of the stator body, the outer wall of the winding teeth, the inner wall of the pole shoe, and the inner wall of the baffles are all covered with an insulating layer. A charging ignition coil lead and a charging lighting coil snap-fit ​​slot are fixedly provided on the insulating layer.

[0004] With the increasing number of electrical devices on motorcycles, such as air conditioners and heaters on tricycles and high-power audio systems on two-wheeled vehicles, the engine load is increased due to the increased load on these devices. This leads to higher temperatures in the AC magneto coils of existing motorcycle engines, affecting product reliability. Utility Model Content

[0005] This utility model provides an AC stator core structure for a motorcycle engine with good heat dissipation and high reliability, including a core assembly and an insulation assembly. The core assembly includes a core combination formed by stacking multiple identical iron chips. Each iron chip is provided with an ignition tooth and multiple illumination teeth. The outer sides of the ignition teeth and illumination teeth are provided with polar arcs. The characteristic feature is that the width of the illumination teeth is wider than the width of the ignition teeth, and the height of the ignition teeth is higher than the height of the illumination teeth.

[0006] Preferably, the width of the lighting teeth is 7.5-8 for the lighting teeth and 6.5-7 for the ignition teeth.

[0007] Preferably, the height of the lighting teeth is 14-15 or 17-18 for the ignition teeth.

[0008] To improve heat dissipation and facilitate the disassembly and replacement of insulation components, the iron core assembly also includes iron chip baffles, which are located on both sides of the iron core assembly, and the insulation components are fitted onto the iron chip baffles.

[0009] Preferably, the structure of the iron chip baffle is consistent with that of the iron chip and a flange is added to the polar arc. The insulating component is embedded in the flange. The iron chip baffle can prevent the copper wire wound on the teeth from falling off the teeth and can also increase the conduction of magnetic flux.

[0010] Preferably, the insulating component includes a front side and a back side of the insert. The front side and the back side of the insert are provided with a second flange along the axial direction of the iron core. The second flange is fitted into the first flange. The combination of the two flanges can protect the copper wire wound on the teeth, effectively preventing the copper wire from being crushed, thereby improving the quality and power generation efficiency of the magneto.

[0011] To facilitate coil wiring, the front of the insert is provided with lighting coil terminals and ignition coil terminals, with connecting iron plates, lighting lead grooves and ignition lead grooves provided under the two ignition coil terminals.

[0012] To avoid nozzle interference, grooves are provided on the front and back of the insert. These grooves are distributed in three directions, different from the lighting coil terminals and ignition coil terminals, forming a triangular distribution. This effectively avoids nozzle interference during product installation and improves product manufacturing efficiency.

[0013] To facilitate installation, the iron core assembly is provided with multiple bolt mounting holes, which are distributed at 90 degrees and / or 180 degrees respectively.

[0014] This utility model has the following beneficial effects:

[0015] 1. Traditional AC stator cores heat up to over 200℃ under normal use. This invention, by improving the tooth structure, reduces the temperature of the AC stator core by 20-30℃ without changing the overall size or performance. This not only allows for the addition of electrical equipment to motorcycle engines and solves the problem of high heating temperature of magneto coils, but also improves product reliability. For a given circumference, the smaller the length-to-width difference, the larger the magnetic flux cross-sectional area. It also reduces the weight of copper wire used in the production and winding of enameled round copper wire for magneto, thereby reducing product material costs.

[0016] 2. During use, the stator core assembly is not easily damaged, but the insulation assembly is easily damaged. Therefore, when the stator core needs to be replaced, only the fitted insulation assembly needs to be removed and replaced, and the core assembly does not need to be replaced, reducing the cost of the repair shop. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of an embodiment of the AC stator core structure of this utility model;

[0018] Figure 2 for Figure 1 A schematic diagram of a ferroelectric core assembly;

[0019] Figure 3 for Figure 2 A schematic diagram of the China Railway chip;

[0020] Figure 4 for Figure 2 A schematic diagram of the China Railway chip baffle;

[0021] Figure 5 for Figure 1 A schematic diagram of the front of the insulating component insert.

[0022] Figure 6 for Figure 1 Schematic diagram of the reverse side of the insulating component insert. Detailed Implementation

[0023] The following detailed description illustrates the specific implementation method:

[0024] The reference numerals in the accompanying drawings include: 1. Iron core assembly; 2. Insulation assembly; 3. Iron core assembly; 4. Iron chip; 5. Ignition tooth; 6. Illumination tooth; 7. Polar arc; 8. Iron chip baffle; 9. Flanged edge one; 10. Front side of insert; 11. Back side of insert; 12. Flanged edge two; 13. Illumination coil terminal; 14. Ignition coil terminal; 15. Connecting iron piece; 16. Illumination lead groove; 17. Ignition lead groove; 18. Groove; 19. Bolt mounting hole.

[0025] Example 1

[0026] like Figure 1-6 As shown, an AC stator core structure for a motorcycle engine with good heat dissipation and high reliability includes a core assembly 1 and an insulation assembly 2. The core assembly 1 includes a core combination 3 formed by stacking multiple identical iron chips 4. One ignition tooth 5 and seven illumination teeth 6 are evenly distributed on the iron chip 4. The outer sides of the ignition tooth 5 and the illumination teeth 6 are provided with polar arcs 7. The width of the illumination teeth 6 is wider than the width of the ignition teeth 5, and the height of the ignition teeth 5 is higher than the height of the illumination teeth 6.

[0027] The width d1 of the ignition tooth 5 is 6.5 mm, and the width d2 of the illumination tooth 6 is 7.5 mm.

[0028] The height h1 of the ignition tooth 5 is 17.5 mm, and the height h2 of the illumination tooth 6 is 15 mm.

[0029] The core assembly 1 also includes a core chip baffle 8, which is located on both sides of the core assembly 3. The core assembly 1 is sandwiched between the core chip baffles 8, and the insulating component 2 is fitted onto the outside of the core chip baffles 8.

[0030] The structure of the iron chip baffle 8 is the same as that of the iron chip 4, and a flange 9 is added to the polar arc 7. The insulating component 2 is embedded in the flange 9. The iron chip baffle 8 can prevent the copper wire wound on the teeth from falling off the teeth, and can also increase the conduction of magnetic flux.

[0031] The insulating component 2 includes an insert front side 10 and an insert back side 11. The insert front side 10 and the insert back side 11 are provided with a second flange 12 along the iron core axis. The second flange 12 is fitted into the first flange 9. The iron core component 1 and the iron chip baffle 8 are sandwiched between the insert front side 10 and the insert back side 11. The combination of the two flanges can protect the copper wire wound on the teeth, effectively avoiding the phenomenon of the copper wire being crushed, thereby improving the quality of the magneto and the power generation efficiency.

[0032] The front side 10 of the insert is provided with a lighting coil terminal 13 and an ignition coil terminal 14, wherein a connecting iron plate 15, a lighting lead groove 16 and an ignition lead groove 17 are provided under the two ignition coil terminals 14.

[0033] The insert has grooves 18 on its front side 10 and back side 11. The grooves 18 are arranged in three directions different from the lighting coil terminal 13 and the ignition coil terminal 14, forming a triangular distribution. This can effectively avoid gun head interference during product installation and improve product manufacturing efficiency.

[0034] The iron core assembly 3 is provided with three bolt mounting holes 19, which are located in three different directions from the ignition teeth 5, forming a triangular distribution, and the included angles with the ignition teeth 5 are +90 degrees, -90 degrees and 180 degrees respectively.

[0035] By adopting the AC stator core structure in this embodiment, the installation space of the existing AC magneto in the engine can be kept unchanged. Through the cooperation of the core assembly 1 and the insulation assembly 2, it is possible to increase the number of electrical equipment in the motorcycle engine, solve the problem of high heating temperature of the magneto coil, and reduce the weight of copper wire used in the production and winding of the magneto enameled round copper wire; thereby reducing the product material cost.

[0036] The above descriptions are merely embodiments of this utility model. Commonly known structures and characteristics are not described in detail here. Those skilled in the art are aware of all common technical knowledge in the field prior to the application date or priority date, are knowledgeable of all existing technologies in that field, and possess the ability to apply conventional experimental methods prior to that date. Therefore, those skilled in the art can, based on the guidance provided in this application, improve and implement this solution in conjunction with their own capabilities. Typical known structures or methods should not be obstacles for those skilled in the art to implement this application. It should be noted that those skilled in the art can make several modifications and improvements without departing from the structure of this utility model. These modifications and improvements should also be considered within the scope of protection of this utility model, and will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. An AC stator core structure for a motorcycle engine, comprising a core assembly and an insulation assembly, wherein the core assembly comprises a core combination formed by stacking multiple identical iron laminations, each iron lamination having an ignition tooth portion and multiple illumination teeth portions, and the outer sides of the ignition teeth portions and illumination teeth portions having polar arcs, characterized in that, The width of the lighting teeth is wider than the width of the ignition teeth, and the height of the ignition teeth is greater than the height of the lighting teeth.

2. The AC stator core structure for a motorcycle engine according to claim 1, characterized in that: The width of the lighting teeth is 7.5-8 for the ignition teeth and 6.5-7 for the ignition teeth.

3. The AC stator core structure for a motorcycle engine according to claim 1 or 2, characterized in that: The height of the lighting teeth is 14-15 or 17-18.

4. The AC stator core structure for a motorcycle engine according to claim 3, characterized in that: The core assembly also includes iron chip baffles, which are located on both sides of the core assembly, and the insulating component is fitted onto the iron chip baffles.

5. The AC stator core structure for a motorcycle engine according to claim 4, characterized in that: The structure of the iron chip baffle is the same as that of the iron chip, and a flange is added to the polar arc. The insulating component is embedded in the flange.

6. The AC stator core structure for a motorcycle engine according to claim 5, characterized in that: The insulating component includes a front side and a back side of the insert, and the front side and the back side of the insert are provided with a second flange along the axial direction of the iron core, and the second flange is fitted into the first flange.

7. The AC stator core structure for a motorcycle engine according to claim 6, characterized in that: The insert has a lighting coil terminal and an ignition coil terminal on its front side, and a connecting iron plate, a lighting lead groove and an ignition lead groove are provided under the two ignition coil terminals.

8. The AC stator core structure for a motorcycle engine according to claim 7, characterized in that: The insert has grooves on its front and back surfaces, and these grooves are distributed in three directions that are different from those of the lighting coil terminal and the ignition coil terminal.

9. The AC stator core structure for a motorcycle engine according to claim 8, characterized in that: The core assembly is provided with multiple bolt mounting holes.

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