An ignition coil

Abstract

The utility model discloses an ignition coil, including casing and inside coil subassembly, and coil subassembly contains core, primary coil support, secondary coil support and "C" type silicon steel sheet. The extension section of core one end is arranged outside the primary coil support, and the positioning plate of primary coil support upper and lower side both ends is provided with convex step, and the convex step of positioning plate one end of extension section is in abutment with the upper and lower end surface of extension section and "C" type silicon steel sheet, and the convex step of positioning plate other end is in abutment with the upper and lower end surface of "C" type silicon steel sheet. The structure is limited through convex step, realizes the accurate positioning of each component, avoids assembly deviation, ensures that ignition coil electromagnetic performance is stable, promotes engine combustion efficiency, reduces oil consumption and pollutant emission, enhances the firmness of overall structure, reduces the risk of component loosening, prolongs the service life, reduces vehicle maintenance cost, improves operation safety and reliability.

Description

Technical Field

[0001] This utility model relates to the field of ignition coil technology, specifically to an ignition coil. Background Technology

[0002] In automotive ignition systems, the ignition coil is a crucial component, its performance directly impacting engine ignition efficiency and vehicle stability. Traditional ignition coils typically consist of a housing and an internal coil assembly, primarily composed of an iron core, a primary coil support, a secondary coil support, and a C-shaped silicon steel sheet. However, existing ignition coils have structural design flaws. The positioning of the iron core, primary coil support, secondary coil support, and C-shaped silicon steel sheet is not precise enough, leading to potential misalignment during assembly. This not only affects the electromagnetic performance of the ignition coil, causing unstable ignition energy and timing deviations, thus reducing engine combustion efficiency, increasing fuel consumption and emissions, but also weakens the connections between components. Vibrations during vehicle operation can cause components to loosen, shortening the ignition coil's lifespan, increasing vehicle maintenance costs, and creating safety hazards. Therefore, improvements to the ignition coil's structure are urgently needed to enhance its performance and reliability. Utility Model Content

[0003] To address the shortcomings of the prior art, this utility model provides an ignition coil.

[0004] The technical solution adopted by this utility model is as follows: an ignition coil, including a housing, wherein a cavity for installing a coil assembly is provided inside the housing, the coil assembly including an iron core, a primary coil support fitted outside the iron core, a secondary coil support fitted outside the primary coil support, and "C"-shaped silicon steel sheets arranged on both sides of the secondary coil support. One end of the iron core has an extension section extending out of the primary coil support. Positioning plates are provided on the upper and lower sides of both ends of the primary coil support. The positioning plates are provided with raised steps. The raised step on the positioning plate at one end of the extension section abuts against the upper and lower end faces of the extension section and the "C"-shaped silicon steel sheet, and the raised step on the positioning plate at the other end abuts against the upper and lower end faces of the "C"-shaped silicon steel sheet.

[0005] Furthermore, the two ends of the “C”-shaped silicon steel sheet are a long leg section and a short leg section. After the two “C”-shaped silicon steel sheets are joined together, a groove is formed between the short leg sections for the extension section to extend into.

[0006] Furthermore, a socket is provided at one end of the primary coil support, and a connection terminal is plugged into the socket.

[0007] Furthermore, the upper and lower sides of the cavity are integrally formed with positioning plates. Gap-increasing protrusions are provided at intervals on the outer surface of the positioning plates and the inner wall of the cavity. Several shim strips are provided at intervals on the inner surface of the positioning plates. The top of the shim strips is provided with a "V" shaped groove so that the top of the shim strips forms a contact line that abuts against the outer wall of the coil assembly. A ventilation gap is formed between the shim strips and the gap-increasing protrusions and the coil assembly.

[0008] The beneficial effects of this utility model are: 1. An extension section is provided at one end of the iron core, extending out of the primary coil support and cooperating with the positioning plates with raised steps on the upper and lower sides of both ends of the primary coil support. The raised step on the positioning plate at one end of the extension section abuts against the upper and lower end faces of the "C"-shaped silicon steel sheet of the extension section, and the raised step on the positioning plate at the other end abuts against the upper and lower end faces of the "C"-shaped silicon steel sheet. This structure can achieve precise positioning between the iron core, the primary coil support, the secondary coil support, and the "C"-shaped silicon steel sheet, effectively avoiding positional displacement of each component during assembly.

[0009] 2. Precise positioning ensures the stability of the ignition coil's electromagnetic performance, resulting in more stable ignition energy and more accurate ignition timing. This, in turn, improves engine combustion efficiency and reduces fuel consumption and pollutant emissions. Simultaneously, the tight and precise connection of all components greatly enhances the overall structural robustness of the ignition coil, effectively resisting external forces such as vibrations during vehicle operation, reducing the risk of component loosening, significantly extending the ignition coil's lifespan, lowering vehicle maintenance costs, and improving vehicle safety and reliability.

[0010] In addition to the objectives, features and advantages described above, this utility model has other objectives, features and advantages.

[0011] The present invention will now be described in further detail with reference to the accompanying drawings. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model.

[0013] Figure 2 This is a schematic diagram of the coil assembly.

[0014] Figure 3 for Figure 2 Enlarged diagram of point A in the middle.

[0015] Figure 4 This is a schematic diagram of the structure after two "C"-shaped silicon steel sheets are joined together.

[0016] Figure 5 This is a schematic diagram of the structure of the iron core and the primary coil support.

[0017] Figure 6 This is a schematic diagram of the shell structure.

[0018] Figure 7 for Figure 6 Enlarged diagram of point B in the middle.

[0019] Figure 1-7 In the middle: 1. Shell; 2. Cavity; 3. Iron core; 4. Primary coil support; 5. Secondary coil support; 6. "C" shaped silicon steel sheet; 7. Extension section; 8. Positioning plate; 9. Raised step; 10. Long leg section; 11. Short leg section; 12. Groove; 13. Socket; 14. Connection end; 15. Positioning plate; 16. Gap-increasing ridge; 17. Raising strip; 18. "V" shaped groove; 19. Contact wire; 20. Ventilation gap. Detailed Implementation

[0020] 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.

[0021] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0022] This invention provides an ignition coil.

[0023] In this embodiment, refer to Figure 1-7 The ignition coil includes a housing 1, within which a cavity 2 for mounting a coil assembly is provided. The coil assembly includes an iron core 3, a primary coil support 4 fitted outside the iron core 3, a secondary coil support 5 fitted outside the primary coil support, and "C"-shaped silicon steel sheets 6 disposed on both sides of the secondary coil support 5. One end of the iron core has an extension 7 extending out of the primary coil support. Positioning plates 8 are provided on the upper and lower sides of both ends of the primary coil support. The positioning plates 8 are provided with raised steps 9. The raised steps 9 on the positioning plate at one end of the extension abut against the upper and lower end faces of the extension and the "C"-shaped silicon steel sheets, and the raised steps on the positioning plate at the other end abut against the upper and lower end faces of the "C"-shaped silicon steel sheets.

[0024] In the above technical solution, an extension section is provided at one end of the iron core, extending beyond the primary coil support. Positioning plates with raised steps are provided on the upper and lower sides of both ends of the primary coil support. During assembly, the raised steps of the positioning plate at one end of the extension section abut against the upper and lower end faces of the extension section and the "C"-shaped silicon steel sheet, while the raised steps of the positioning plate at the other end abut against the upper and lower end faces of the "C"-shaped silicon steel sheet. The limiting effect of the raised steps achieves precise positioning and mutual constraint among the iron core, primary coil support, secondary coil support, and "C"-shaped silicon steel sheet. This effectively prevents the components from shifting during assembly, ensuring the stability of the ignition coil's internal structure. Meanwhile, the "C"-shaped silicon steel sheet and extension section abut against the raised step, and a natural gap is formed between the raised step and the surface of the "C"-shaped silicon steel sheet and extension section, which can improve heat dissipation and ventilation, enhance the overall structural integrity, reduce the risk of component loosening caused by vehicle vibration, and also improve heat dissipation and extend the service life of the ignition coil.

[0025] Specifically, the two ends of the “C”-shaped silicon steel sheet are a long leg section 10 and a short leg section 11. After the two “C”-shaped silicon steel sheets are joined together, a groove 12 is formed between the short leg section 10 and the short leg section 11 for the extension section to extend into.

[0026] In this embodiment, the two ends of the "C"-shaped silicon steel sheet are designed as long legs and short legs. After the two "C"-shaped silicon steel sheets are joined together, a groove is formed between the short legs. The extension of the iron core can be inserted into the groove. The two "C"-shaped silicon steel sheets increase the gap, which can provide space for thermal expansion and contraction.

[0027] Specifically, one end of the primary coil support is provided with a socket 13, and a connection end 14 is plugged into the socket 13.

[0028] In this embodiment, a socket is provided at one end of the primary coil bracket, and a connecting end is plugged into the socket. The connecting end is used to connect to an external circuit, thereby realizing the electrical connection between the ignition coil and the automotive circuit system, enabling the primary coil to obtain the required electrical energy and generate electromagnetic induction, thus providing conditions for the secondary coil to generate high voltage.

[0029] Specifically, the upper and lower sides of the cavity are integrally formed with positioning plates 15. The outer surface of the positioning plates 15 and the inner wall of the cavity are provided with gap-increasing protrusions 16 at intervals. The inner surface of the positioning plates is provided with a number of shims 17 at intervals between the positioning plates. The top of the shims 17 is provided with a "V" shaped groove 18 so that the top of the shims forms a contact line 19 that abuts against the outer wall of the coil assembly. The shims and gap-increasing protrusions form a ventilation gap 20 between the shims and the coil assembly.

[0030] In this embodiment, a positioning thin plate is integrally formed on the upper and lower sides of the cavity. Gap-increasing protrusions are provided on the outer surface of the thin plate and the inner wall of the cavity, and a shim strip is provided on the inner surface. The top of the shim strip forms a contact line with the outer wall of the coil assembly through a "V" shaped groove. A ventilation gap is formed between the gap-increasing protrusions and the shim strip and the coil assembly. When the ignition coil is working, air can flow in the gap, carrying away the heat generated by the coil.

[0031] Please note to all technical personnel: Although this utility model has been described according to the specific embodiments above, the concept of this utility model is not limited to this utility model. Any modification that utilizes the concept of this utility model will be included within the scope of protection of this patent right.

Claims

1. An ignition coil, comprising a housing, wherein a cavity for mounting a coil assembly is provided within the housing, the coil assembly comprising an iron core, a primary coil support fitted outside the iron core, a secondary coil support fitted outside the primary coil support, and "C"-shaped silicon steel sheets disposed on both sides of the secondary coil support, characterized in that: One end of the iron core has an extension section extending out of the primary coil support. Positioning plates are provided on the upper and lower sides of both ends of the primary coil support. The positioning plates are provided with raised steps. The raised steps on the positioning plate at one end of the extension section abut against the upper and lower end faces of the extension section and the "C"-shaped silicon steel sheet. The raised steps on the positioning plate at the other end abut against the upper and lower end faces of the "C"-shaped silicon steel sheet.

2. The ignition coil according to claim 1, characterized in that: The two ends of the "C"-shaped silicon steel sheet are a long leg section and a short leg section. After the two "C"-shaped silicon steel sheets are joined together, a groove is formed between the short leg sections for the extension section to extend into.

3. The ignition coil according to claim 1, characterized in that: One end of the primary coil support is provided with a socket, and a connection terminal is plugged into the socket.

4. The ignition coil according to claim 1, characterized in that: The upper and lower sides of the cavity are integrally formed with positioning plates. Gap-increasing protrusions are provided at intervals on the outer surface of the positioning plates and the inner wall of the cavity. Several shim strips are provided at intervals on the inner surface of the positioning plates. The top of the shim strips is provided with a "V" shaped groove so that the top of the shim strips forms a contact line that abuts against the outer wall of the coil assembly. A ventilation gap is formed between the shim strips and the gap-increasing protrusions and the coil assembly.

Images