Dry type ignition coil iron core structure
By designing grooves and guide structures in the iron core structure of the dry ignition coil, the problems of insufficient thickness of the insulating material of the coil assembly and the difficulty of potting are solved, and the effect of improving insulation performance and reducing defective yield is achieved.
Patent Information
- Application Number
- CN202421882434.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-06
- Publication Date
- 2025-06-06
- Estimated Expiration
- 2034-08-06
AI Technical Summary
After the dry ignition coil is potted with the insulating material epoxy, the thickness of the insulation material covered on the upper surface of the wire pack assembly is insufficient, resulting in leakage breakdown. The potting is difficult, which can easily lead to the increase in defective products and waste loss.
A dry ignition coil iron core structure is designed. By designing grooves at both ends of the iron core body, the distance between the wire bag assembly and the edge of the housing mouth is increased, and the combination of guide grooves, guide blocks, cavity, tension springs, limit rods and limit grooves is ensured that the wire bag assembly maintains the correct direction and position during assembly, forming a self-locking structure.
It improves the insulation performance of wire pack components, reduces the difficulty of the potting process, reduces the defective yield and waste loss, and improves the assembly accuracy and reliability of the product.
Smart Images
Figure CN222952921U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of iron cores, in particular to an iron core structure of a dry ignition coil. Background Art
[0002] The dry ignition coil is an engine component that generates pulsed high voltage electricity. It requires the insulation distance and material thickness to be compatible with its voltage level. The iron core, as a component of the dry ignition coil, uses the iron core to form a closed magnetic circuit of the ignition coil, so that the ignition coil generates an induced pulse high voltage in the secondary component through mutual inductance, which is provided to the car spark plug through the loop to ignite the oil-gas mixture in the cylinder of the car engine.
[0003] When the dry ignition coil is working, the primary and secondary windings in the ignition coil will produce a very high instantaneous voltage. If the thickness of the insulating material covering the upper surface of the wire package component after the coil component product is potted with the insulating material epoxy material is insufficient, it will cause leakage breakdown between the upper surface of the wire package component and the external metal product, and the product performance is difficult to guarantee; at the same time, due to the small distance between the upper surface of the blade of the secondary skeleton component of the wire package component and the edge of the shell component mouth, it is difficult to pot the coil component product during the key process potting. The amount of potting material for each product is small and requires special accuracy. If there is a deviation, it is easy to cause insufficient amount of potting epoxy material or excessive overflow of potting epoxy material, resulting in poor product appearance, an increase in defective products, and unnecessary waste and loss. Therefore, the structure of the iron core, wire package component, shell component, and the design of the assembly gap are particularly important.
[0004] Therefore, we propose a dry ignition coil core structure to solve the above problems. Utility Model Content
[0005] The purpose of the utility model is to provide a dry ignition coil core structure to solve the problem proposed in the above background technology that the thickness of the insulating material covering the upper surface of the wire package assembly of the existing coil assembly products after the insulating material epoxy material is encapsulated is insufficient, which will cause leakage breakdown between the upper surface of the wire package assembly and the external metal products, and the product performance is difficult to guarantee. At the same time, due to the small distance between the wire package assembly and the edge of the shell assembly mouth, it is difficult to encapsulate the coil assembly product during the key process encapsulation. Deviations can easily lead to insufficient encapsulation epoxy material or excessive overflow of the encapsulation epoxy material, resulting in poor product appearance, an increase in defective products, and unnecessary waste and loss.
[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a dry ignition coil core structure, including a shell body, a placement groove is opened inside the shell body, and the inside of the placement groove is slidably connected with an iron core body, an insertion groove is opened inside the iron core body, and grooves are opened at both ends of the iron core body, a wire wrap assembly is slidably connected inside the insertion groove, and the bottom of the two ends of the wire wrap assembly is fitted and connected with the upper surface of the groove.
[0007] Grooves are designed at both ends of the core body. This increases the distance between the upper surface of the wire package assembly and the edge of the shell mouth after assembly, increases the thickness of the insulating material covering the surface of the wire package assembly after the wire package assembly is potted with epoxy material of the insulating material, and improves the insulation performance; at the same time, it reduces the difficulty of the potting process, reduces the defective rate of the product process, reduces waste and loss, and saves costs.
[0008] Preferably, the wire package assembly includes a primary coil, a secondary coil, an insulating material, an insulating frame and connecting terminals.
[0009] Preferably, guide grooves are provided inside the grooves at both ends, and guide blocks are welded at both ends of the wire package assembly, and the guide blocks are slidably connected to the guide grooves.
[0010] By adopting the above technical solution, when the bottom of the wire wrap assembly is fitted and connected with the upper surface of the groove, the guide block at the bottom of the wire wrap assembly is slidably connected with the guide groove at the top of the groove, ensuring that the wire wrap assembly will not be offset when assembled with the iron core body.
[0011] Preferably, a cavity is provided inside the right end of the iron core body, and a limit rod is slidably connected inside the cavity.
[0012] Preferably, a tension spring is connected between the limiting rod and the cavity.
[0013] Preferably, a guide block connected to the right end of the wire package assembly is provided with a limiting groove.
[0014] By adopting the above technical solution, by pulling the limit rod, when the wire package assembly and the iron core body are assembled, the tension spring drives the limit rod and the limit groove to be positioned and connected, forming a self-locking structure.
[0015] Compared with the prior art, the utility model has the following beneficial effects: the dry ignition coil core structure;
[0016] 1. By setting the shell body, placement groove, mouth iron core body, insertion groove, groove and wire package assembly, when the mouth iron core body slides into the placement groove opened in the shell body, the wire package assembly is assembled with the mouth iron core body, and grooves are designed at both ends of the mouth iron core body. After the wire package assembly and the mouth iron core body are assembled, the wire package assembly sinks as a whole, thereby increasing the distance between the upper surface of the wire package assembly and the edge of the shell body mouth after assembly, increasing the thickness of the insulating material covering the surface of the wire package assembly after the wire package assembly is potted with the insulating material epoxy material, improving the insulation performance, and reducing the difficulty of implementing the potting process, reducing the product process defect rate, reducing waste and loss, and saving costs;
[0017] 2. Through the set guide groove, guide block, cavity, tension spring, limit rod and limit groove, during the assembly process, first pull the limit rod to compress the tension spring, and the guide block at the bottom end of the wire wrap assembly is slidably connected with the guide groove at the top of the groove, so that the bottom of the wire wrap assembly is fitted with the upper surface of the groove, ensuring that the wire wrap assembly can maintain the correct direction and position when inserted into the insertion slot to avoid displacement. Then loosen the limit rod, and the elastic force of the tension spring pushes the limit rod into the limit groove to achieve self-locking fixation of the wire wrap assembly and the iron core body. Its guide structure and self-locking structure not only improve the assembly accuracy, performance stability and structural strength of the ignition coil, but also enhance its reliability and reduce maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 It is a three-dimensional structural schematic diagram of the shell body and the iron core body of the utility model;
[0019] Figure 2 It is a three-dimensional structural schematic diagram of the iron core body of the utility model;
[0020] Figure 3 This is a schematic diagram of the top view structure of the utility model;
[0021] Figure 4 This is a schematic diagram of the front view cutaway structure of the utility model;
[0022] Figure 5 For this utility model Figure 4 Enlarged structural diagram at A in the middle.
[0023] In the figure: 1. Shell body; 2. Placement slot; 3. Iron core body; 4. Insertion slot; 5. Groove; 6. Wire package assembly; 7. Guide slot; 8. Guide block; 9. Cavity; 10. Limit rod; 11. Tension spring; 12. Limit slot. DETAILED DESCRIPTION
[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0025] See also Figure 1-5 The utility model provides a technical solution: a dry ignition coil core structure, including a shell body 1, a placement groove 2 is provided inside the shell body 1, and a core body 3 is slidably connected inside the placement groove 2, an insertion groove 4 is provided inside the core body 3, and grooves 5 are provided at both ends of the core body 3, a wire package component 6 is slidably connected inside the insertion groove 4, and the bottoms of both ends of the wire package component 6 are fitted and connected with the upper surface of the groove 5, the wire package component 6 includes a primary coil, a secondary coil, an insulating material, an insulating skeleton and a connecting terminal, and grooves 5 are designed at both ends of the core body 3. Thereby increasing the distance between the upper surface of the wire package component 6 and the edge of the shell mouth after assembly, increasing the thickness of the insulating material covering the surface of the wire package component 6 after the wire package component 6 is encapsulated with the epoxy material of the insulating material, and improving the insulation performance; at the same time, reducing the difficulty of implementing the encapsulation process, reducing the defective rate of the product process, reducing waste and loss, and saving costs.
[0026] Guide grooves 7 are provided inside the grooves 5 at both ends, and guide blocks 8 are welded at both ends of the wire wrap assembly 6, and the guide blocks 8 are slidably connected to the guide grooves 7. A cavity 9 is provided inside the right end of the iron core body 3, and a limit rod 10 is slidably connected inside the cavity 9. A tension spring 11 is connected between the limit rod 10 and the cavity 9. A limit groove 12 is provided on the guide block 8 connected to the right end of the wire wrap assembly 6. When the limit rod 10 is pulled and the bottom of the wire wrap assembly 6 is fitted and connected to the upper surface of the groove 5, the guide block 8 at the bottom of the wire wrap assembly 6 is slidably connected to the guide groove 7 at the top of the groove 5, so that when the wire wrap assembly 6 is assembled with the iron core body 3, the limit rod 10 is loosened, and the tension spring 11 drives the limit rod 10 to be positioned and connected with the limit groove 12 to form a self-locking structure.
[0027] Working principle: When using the dry ignition coil core structure, first pull the limit rod 10 to compress the tension spring 11, and the guide block 8 at the bottom of the wire package assembly 6 is slidably connected with the guide groove 7 at the top of the groove 5. Grooves 5 are designed at both ends of the iron core body 3. After the wire package assembly 6 and the iron core body 3 are assembled, the wire package assembly 6 sinks as a whole, thereby increasing the distance between the upper surface of the wire package assembly 6 and the edge of the mouth of the shell body 1 after assembly, and increasing the thickness of the insulating material covering the surface of the wire package assembly 6 after the wire package assembly 6 is encapsulated with the epoxy material of the insulating material, thereby improving the insulation performance and reducing the difficulty of implementing the encapsulation process, reducing the product process defect rate, reducing waste and loss, and saving costs. Then, loosen the limit rod 10, and the elastic force of the tension spring 11 pushes the limit rod 10 into the limit groove 12, so as to realize the self-locking fixation of the wire package assembly 6 and the iron core body 3. Its guiding structure and self-locking structure not only improve the assembly accuracy, performance stability and structural strength of the ignition coil, but also enhance its reliability and reduce maintenance costs.
[0028] Thereby completing a series of tasks, the contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.
[0029] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.
Claims
1. A dry ignition coil core structure, comprising a housing body (1), characterized in that: The housing body (1) is provided with a placement groove (2), and the inside of the placement groove (2) is slidably connected with an iron core body (3); An insertion groove (4) is provided inside the iron core body (3), and grooves (5) are provided at both ends of the iron core body (3). A wire wrap assembly (6) is slidably connected inside the insertion groove (4), and the bottoms of both ends of the wire wrap assembly (6) are fitted and connected to the upper surfaces of the grooves (5).
2. The dry ignition coil core structure according to claim 1, characterized in that: The wire package assembly (6) comprises a primary coil, a secondary coil, an insulating material, an insulating frame and a connecting terminal.
3. The dry ignition coil core structure according to claim 1, characterized in that: Guide grooves (7) are provided inside the grooves (5) at both ends, and guide blocks (8) are welded at both ends of the wire package assembly (6), and the guide blocks (8) are slidably connected to the guide grooves (7).
4. The dry ignition coil core structure according to claim 1, characterized in that: A cavity (9) is provided inside the right end of the iron core body (3), and a limit rod (10) is slidably connected inside the cavity (9).
5. The dry ignition coil core structure according to claim 4, characterized in that: A tension spring (11) is connected between the limiting rod (10) and the cavity (9).
6. The dry ignition coil core structure according to claim 1, characterized in that: A guide block (8) connected to the right end of the wire package assembly (6) is provided with a limiting groove (12).