Waterproof dustproof ignition coil

By designing a protective cover and sealing cover structure on the ignition coil, the problem of easy damage to the seals is solved, achieving effective waterproof and dustproof protection, improving the life and stability of the ignition coil, and facilitating observation and operation.

CN224318243UActive Publication Date: 2026-06-02WENZHOU MINJO AUTO PARTS CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
WENZHOU MINJO AUTO PARTS CO LTD
Filing Date
2025-06-12
Publication Date
2026-06-02

AI Technical Summary

Technical Problem

The seals of existing motorcycle ignition coils are easily corroded by dust and sand, leading to component damage and inconvenience in disassembly, and lacking effective waterproof and dustproof protection.

Method used

A waterproof and dustproof protective ignition coil was designed, which adopts a protective cover and a sealing cover structure. The lower end of the protective cover is attached to the housing, and the upper end of the sealing cover is connected to the protective cover through a fastening component to form a sealed space. The cover is transparent for easy observation and operation.

Benefits of technology

It effectively prevents water and dust from damaging the seals of the ignition coil, improves the lifespan and stability of the ignition coil in harsh environments, facilitates observation and operation, reduces the risk of bolt corrosion, and makes disassembly and replacement easier.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to the technical field of motor vehicle accessories, and specifically discloses a waterproof and dustproof protection type ignition coil, which comprises an ignition coil body, a protective cover is installed on the outer ring surface of the ignition coil body, a lower end of the protective cover is provided with a matching cover, and a sealing cover is hingedly connected to the upper end of the protective cover. In the utility model, the casing, the matching cover and the protective cover form a relatively sealed space, and the ignition coil body is located in the space, which effectively plays a waterproof and dustproof effect on the sealing element of the ignition coil body, thereby avoiding damage to the sealing element of the ignition coil body caused by external water and dust. In addition, the upper side of the protective cover is provided with a sealing cover, so that the upper end of the ignition coil body can be sealed and protected by the sealing cover, thereby avoiding damage to the upper end device and bolts of the ignition coil body caused by external dust and water, and further improving the service life and stability of the ignition coil when used in harsh environments.
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Description

Technical Field

[0001] This utility model relates to the field of motor vehicle parts technology, and in particular to a waterproof and dustproof protective ignition coil. Background Technology

[0002] Chinese patent application number 202322499398.5 discloses a high-safety motorcycle ignition coil, including an ignition controller. Two mating seats are centrally symmetrically fixed to the outer walls of the two ends of the ignition controller. The mating seats are welded to the ignition controller, and through holes are formed between the upper and lower side walls of the mating seats. A mating sealing ring is fixedly fitted onto the lower outer wall of the ignition controller, and a rubber sealing gasket is fixedly connected to the outer bottom of the mating sealing ring. The bottom of the rubber sealing gasket has multiple equidistant annular toothed grooves. The entire structure features a mating sealing installation structure. Specifically, the ignition controller body has two centrally symmetrical mating seats at both ends, with mating sealing rings fixedly fitted onto their lower outer sides. A rubber sealing gasket is fixedly connected to the outer bottom of the mating sealing ring. After installation on the corresponding position of the engine via mounting bolts through the holes on the two mating seats, a reliable seal can be achieved at the opening at the upper end of the valve cover, ensuring good safety.

[0003] While the above-mentioned technology achieves a certain degree of waterproof and dustproof effect for the ignition coil through the setting of two seals and mating seats, in actual use, the lack of protective measures for the seals makes the seals and mating seats susceptible to dust and sand corrosion, resulting in easy damage to these components and inconvenience for subsequent disassembly. Therefore, in order to solve the above-mentioned technical defects, we propose a waterproof and dustproof protective ignition coil. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a waterproof and dustproof protective ignition coil.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A waterproof and dustproof protective ignition coil includes an ignition coil body. A protective cover is installed on the outer ring surface of the ignition coil body. A fitting cover is provided at the lower end of the protective cover. A sealing cover is hinged to the upper end of the protective cover. The side of the sealing cover away from the hinge is connected to the protective cover through a fastening assembly. The protective cover and the sealing cover are provided with a through groove on the side near the fastening assembly.

[0007] Preferably, the lower side of the protective cover is provided with a slot, the inner side of the slot is provided with a groove, the upper side of the outer ring surface of the cover is inserted into the slot, and the upper side of the outer ring surface of the cover is provided with a corresponding snap-fit ​​protrusion corresponding to the groove.

[0008] Preferably, the fastening assembly includes a mounting block, an L-shaped, elastic main fastener, and a retainer. The retainer is mounted on the side of the protective cover away from the hinge, the mounting block is mounted on the side of the sealing cover away from the hinge and corresponds to the retainer, the upper end of the main fastener is mounted on the lower surface of the mounting block, and the lower end of the main fastener abuts against one end of the lower surface of the retainer.

[0009] Preferably, a matching secondary buckle is installed on the lower surface of the mounting block at the end away from the main buckle, and the lower end of the secondary buckle abuts against the lower surface of the card seat at the end away from the main buckle.

[0010] Preferably, the lower surface of the card holder is provided with an upwardly protruding limiting groove for contacting the main buckle and the auxiliary buckle, and the upper surface of the card holder is an inclined downward arc with the side closer to the protective cover being the higher part.

[0011] Preferably, the inner side of the sealing cover is provided with a moisture-absorbing bag, and the sealing cover body is a transparent cover body.

[0012] Preferably, the upper surface of the protective cover is provided with a mounting groove and a sealing ring is provided through the mounting groove, and the lower surface of the sealing cover is provided with a mating groove corresponding to the sealing ring.

[0013] The waterproof and dustproof protective ignition coil proposed in this utility model has the following advantages:

[0014] 1. In this utility model, the housing, the bonding cover, and the protective cover form a relatively sealed space, and the ignition coil body is located in this space. This effectively provides waterproof and dustproof protection for the sealing components of the ignition coil body, thereby preventing damage to the sealing components of the ignition coil body caused by external water and dust. At the same time, since a sealing cover is provided on the upper side of the protective cover, the upper end of the ignition coil body can be sealed and protected by the sealing cover, thereby preventing damage to the upper components and bolts of the ignition coil body caused by external dust and water. This helps to prevent the bolts from rusting and the water from entering the upper components of the ignition coil body, thus further providing waterproof and dustproof protection for the ignition coil body, thereby improving the lifespan and stability of the ignition coil when used in harsh environments.

[0015] 2. In this utility model, because the sealing cover is transparent, personnel can easily and intuitively observe whether there is rust on the ignition coil body and bolts during use, and thus promptly address any issues. This ensures the normal operation of the ignition coil body and bolts, facilitating subsequent bolt disassembly and replacement of the ignition coil body. The elastic main and auxiliary latches allow personnel to apply force to engage or disengage them from the mounting bracket, thereby sealing or opening the upper part of the protective cover. This facilitates operation of the ignition coil body. The limiting groove further limits the latches, preventing the sealing cover from opening without voluntary force. The arc-shaped upper surface of the mounting bracket also facilitates the engagement of the latches with the limiting groove. Attached Figure Description

[0016] Figure 1 This is a schematic diagram showing the fastening of the sealing cover and protective cover of the waterproof and dustproof protective ignition coil proposed in this utility model.

[0017] Figure 2 A schematic diagram showing the opening of the sealing cover of the waterproof and dustproof protective ignition coil proposed in this utility model;

[0018] Figure 3 This is a schematic diagram showing the separation of the sealing cover and the protective cover of the waterproof and dustproof protective ignition coil proposed in this utility model;

[0019] Figure 4 This is a schematic diagram showing the disassembled protective cover and bonding cover of the waterproof and dustproof protective ignition coil proposed in this utility model.

[0020] In the diagram: 1. Ignition coil body; 2. Protective cover; 3. Sealing cover; 4. Slot; 5. Fitting cover; 6. Snap-fit ​​protrusion; 7. Mounting block; 8. Main latching rod; 9. Clip seat; 10. Secondary latching rod; 11. Moisture-absorbing bag; 12. Sealing ring. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Example

[0022] Reference Figure 1-4A waterproof and dustproof protective ignition coil includes an ignition coil body 1. A protective cover 2 is installed on the outer ring surface of the ignition coil body 1. A fitting cover 5 is provided at the lower end of the protective cover 2. The fitting cover 5 is made of high-temperature resistant silicone rubber. The lower end of the fitting cover 5, that is, the end away from the protective cover 2, is attached to the surface of the outer casing. Therefore, the shape of the lower end of the fitting cover 5 is selected according to the shape of the surface of the outer casing, so that the fitting cover 5 can be attached to the surface of the outer casing relatively tightly. A sealing cover 3 is hinged to the upper end of the protective cover 2. The side of the sealing cover 3 away from the hinge is connected to the protective cover 2 through a fastening assembly. The protective cover 2 and the sealing cover 3 are provided with a through groove on the side near the fastening assembly. Example

[0023] Reference Figure 1-4 While all other parts are the same as in Example 1, the difference between this example and Example 1 is that:

[0024] The lower side of the protective cover 2 is provided with a slot 4, and the inner side of the slot 4 is provided with a groove. The upper side of the outer ring surface of the fitting cover 5 is inserted into the slot 4. The upper side of the outer ring surface of the fitting cover 5 is provided with a corresponding snap-fit ​​protrusion 6 corresponding to the groove. The slot 4 facilitates the installation and positioning of the fitting cover 5, thereby preventing the fitting cover 5 from moving freely and causing a large gap between it and the protective cover 2. At the same time, the snap-fit ​​protrusion 6 ensures a tight and stable connection between the fitting cover 5 and the protective cover 2. The inner side of the sealing cover 3 is provided with a moisture-absorbing bag 11. The sealing cover 3 is a transparent cover. Because the sealing cover 3 is a transparent cover, this solution allows for easy and stable operation. Personnel can easily and intuitively observe whether there is rust on the ignition coil body 1 and the bolts, and thus take timely measures to deal with it. This ensures the normal operation of the ignition coil body 1 and the bolts, and facilitates the subsequent disassembly of the bolts and replacement of the ignition coil body 1. The upper surface of the protective cover 2 is provided with a mounting groove and a sealing ring 12 is provided through the mounting groove. The lower surface of the sealing cover 3 is provided with a matching abutment groove corresponding to the sealing ring 12. The setting of the sealing ring 12 provides good sealing between the sealing cover 3 and the protective cover 2, so as to reduce the phenomenon that external water, dust and other debris enter the ignition coil body 1 inside the sealing cover 3 and cause adverse effects.

[0025] The fastening assembly includes a mounting block 7, an L-shaped, flexible main fastener 8, and a retainer 9. The retainer 9 is mounted on the side of the protective cover 2 away from the hinge. The mounting block 7 is mounted on the side of the sealing cover 3 away from the hinge and corresponds to the retainer 9. The upper end of the main fastener 8 is mounted on the lower surface of the mounting block 7, and the lower end of the main fastener 8 abuts against one end of the lower surface of the retainer 9. A matching secondary fastener 10 is mounted on the lower surface of the mounting block 7 away from the main fastener 8, and the lower end of the secondary fastener 10 abuts against the lower surface of the retainer 9 away from the main fastener 8. The lower surface of the retainer 9 has an upwardly protruding part for engaging with the main fastener 8 and the secondary fastener 10. The upper surface of the card holder 9 is sloping downwards in an arc shape, with the side closer to the protective cover 2 being higher. The main latch 8 and the auxiliary latch 10 are elastic, allowing personnel to apply force to the two latches to engage or disengage them from the card holder 9. This allows the sealing cover 3 to seal or open the upper end of the protective cover 2, facilitating operation of the ignition coil body 1. At the same time, the limiting groove helps to limit the latches, preventing the sealing cover 3 from opening without active force from the personnel. Furthermore, the arc shape of the upper surface of the card holder 9 facilitates the engagement of the latches with the limiting groove.

[0026] Operating principle and advantages: In use, the protective cover 2 is installed on the outside of the ignition coil body 1, and the fitting cover 5 is located on the lower side of the protective cover 2. Then, the ignition coil body 1 is bolted to the outer casing. During the installation process, the protective cover 2 moves synchronously towards the casing, causing the protective cover 2 to eventually adhere to the fitting cover 5 against the outer casing. This creates a relatively sealed space between the casing, the fitting cover 5, and the protective cover 2. The ignition coil body 1 is located within this space, effectively providing waterproofing and dustproofing for the sealing components of the ignition coil body 1. This design effectively prevents external water and dust from damaging the seals of the ignition coil body 1. Furthermore, the upper side of the protective cover 2 is equipped with a sealing cover 3, which seals and protects the upper part of the ignition coil body 1, preventing external dust and water from damaging the upper components and bolts. This also helps prevent bolt corrosion and water ingress into the upper components of the ignition coil body 1, further protecting the ignition coil body 1 from water and dust, thus improving its lifespan and stability in harsh environments.

[0027] It should be further explained that, since the cover of the sealing cover 3 is transparent, personnel can easily and intuitively observe whether there is rust on the ignition coil body 1 and the bolts during use, and thus promptly address any issues. This ensures the normal operation of the ignition coil body 1 and the bolts, and facilitates subsequent disassembly of the bolts and replacement of the ignition coil body 1. The upper surface of the protective cover 2 has a mounting groove through which a sealing ring 12 is installed. The lower surface of the sealing cover 3 has a corresponding abutment groove for the sealing ring 12. The sealing ring 12 provides good sealing between the sealing cover 3 and the protective cover 2. This design aims to reduce the risk of external water, dust, and other debris entering the ignition coil body 1 inside the sealing cover 3 and causing adverse effects. The elastic main latch 8 and auxiliary latch 10 allow personnel to apply force to the two latches to engage or disengage them from the mounting base 9, thereby sealing or opening the upper end of the protective cover 2 with the sealing cover 3. This facilitates operation of the ignition coil body 1. The limiting groove helps to limit the latches, preventing the sealing cover 3 from opening without active force from personnel. Furthermore, the arc-shaped upper surface of the mounting base 9 facilitates the engagement of the latches with the limiting groove.

[0028] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A waterproof and dustproof protective ignition coil, comprising an ignition coil body (1), characterized in that, The outer ring surface of the ignition coil body (1) is equipped with a protective cover (2). The lower end of the protective cover (2) is provided with a fitting cover (5). The upper end of the protective cover (2) is hinged with a sealing cover (3). The side of the sealing cover (3) away from the hinge is connected to the protective cover (2) through a fastening assembly. The protective cover (2) and the sealing cover (3) are both provided with a through groove on the side of the fastening assembly.

2. The waterproof and dustproof protective ignition coil according to claim 1, characterized in that, The lower side of the protective cover (2) is provided with a slot (4), the inner side of the slot (4) is provided with a slot, the upper side of the outer ring surface of the fitting cover (5) is inserted into the slot (4), and the upper side of the outer ring surface of the fitting cover (5) is provided with a matching snap-fit ​​protrusion (6) corresponding to the slot.

3. The waterproof and dustproof protective ignition coil according to claim 1, characterized in that, The fastening assembly includes a mounting block (7), an L-shaped elastic main fastener (8), and a retainer (9). The retainer (9) is mounted on the side of the protective cover (2) away from the hinge. The mounting block (7) is mounted on the side of the sealing cover (3) away from the hinge and corresponds to the retainer (9). The upper end of the main fastener (8) is mounted on the lower surface of the mounting block (7), and the lower end of the main fastener (8) abuts against one end of the lower surface of the retainer (9).

4. The waterproof and dustproof protective ignition coil according to claim 3, characterized in that, A matching secondary buckle (10) is installed on the lower surface of the mounting block (7) at the end away from the main buckle (8), and the lower end of the secondary buckle (10) abuts against the lower surface of the card seat (9) at the end away from the main buckle (8).

5. The waterproof and dustproof protective ignition coil according to claim 4, characterized in that, The lower surface of the card holder (9) is provided with an upward protruding limiting groove for contacting the main buckle (8) and the auxiliary buckle (10). The upper surface of the card holder (9) is an arc sloping downward and the side closer to the protective cover (2) is higher.

6. The waterproof and dustproof protective ignition coil according to claim 1, characterized in that, The inner side of the sealing cover (3) is provided with a moisture-absorbing bag (11), and the cover body of the sealing cover (3) is a transparent cover body.

7. The waterproof and dustproof protective ignition coil according to claim 1, characterized in that, The upper surface of the protective cover (2) is provided with an installation groove and a sealing ring (12) is provided through the installation groove. The lower surface of the sealing cover (3) is provided with a mating groove corresponding to the sealing ring (12).