High-voltage extension rod and ignition coil

Abstract

The utility model provides a high-voltage connecting rod and ignition coil, high-voltage connecting rod includes rod body and install the waterproof ventilation piece on the rod body, the rod body is provided with first channel and second channel, the one end of first channel is used for being communicated with spark plug installation well, waterproof ventilation piece is located between second channel and first channel. The end, communicated with the first channel, of the second channel is a first end, the end, communicated with the outside of the ignition coil, of the second channel is a second end, and the second end is not higher than the first end in the axial direction of the high-voltage connecting rod. The first channel and the second channel are arranged in the high-pressure connecting rod, and the waterproof breathable piece is arranged between the first channel and the second channel, so that the high-pressure connecting rod not only has a splash-proof function, but also can quickly discharge accumulated water on the waterproof breathable film through the second channel under the extreme working conditions that a vehicle wades in water and an engine is submerged by water, and the service life of the high-pressure connecting rod is prolonged. Water is prevented from accumulating on the waterproof breathable film, so that the durability of the waterproof breathable film is not influenced.

Description

Technical Field

[0001] This utility model belongs to the field of ignition coil technology, and in particular relates to a high-voltage connector and an ignition coil. Background Technology

[0002] During engine operation, high temperatures are generated, leading to increased air pressure within the spark plug well. Excessive pressure can affect the seal between the high-pressure connector and the spark plug, thus requiring an exhaust channel to prevent excessive pressure within the spark plug well. Existing high-pressure connectors are equipped with a sealing lip, on which a labyrinthine exhaust groove is incorporated. An exhaust groove is also present on the dust cover at the top of the high-pressure connector, thereby venting gases from the spark plug well.

[0003] While this structure provides dust protection and venting, it has poor waterproofing, especially in extreme situations such as when a vehicle is submerged in water or the engine is flooded. If the water level is higher than the dust cover of the high-voltage connector, water will enter the spark plug mounting well through the venting groove on the dust cover and sealing lip, thus affecting the sealing and insulation performance of the high-voltage connector and spark plug, and may even lead to high-voltage leakage. Utility Model Content

[0004] In view of the shortcomings of the prior art described above, the purpose of this utility model is to provide a high-voltage connector and ignition coil to solve the problem of poor waterproof performance of the high-voltage connector in the prior art.

[0005] To achieve the above and other related objectives, this utility model provides a high-voltage connecting rod, comprising:

[0006] The rod body has a first channel and a second channel that are interconnected. One end of the first channel is used to communicate with the spark plug mounting well, and the other end of the first channel is connected to the outside of the ignition coil through the second channel.

[0007] A waterproof and breathable component is disposed between the second channel and the first channel, thereby isolating the second channel from the first channel;

[0008] Wherein, the end of the second channel that is connected to the first channel is the first end, the end of the second channel that is connected to the outside of the ignition coil is the second end, and the second end is not higher than the first end in the axial direction of the high-voltage connector.

[0009] Furthermore, the rod body is provided with an installation groove, the installation groove having an opening for the waterproof and breathable component to be installed through, the first channel and the second channel are respectively connected to the installation groove, and the waterproof and breathable component is installed in the installation groove;

[0010] The waterproof and breathable component includes an installation component and a waterproof and breathable membrane disposed on the installation component. The installation component has a through hole that communicates with the first channel and the second channel. The waterproof and breathable membrane is installed on the end of the installation component away from the first channel and blocks the through hole.

[0011] Furthermore, the mounting groove is a stepped groove, and the waterproof and breathable component is disposed in the stepped groove. The inner diameter of the stepped groove at the end away from the first channel is larger than the inner diameter of the stepped groove at the end near the first channel. The mounting component includes a connecting part, one end of which extends radially to form a boss. The boss abuts against the stepped surface of the stepped groove, and the waterproof and breathable membrane is disposed on the boss.

[0012] Furthermore, the end face of the boss portion away from the first channel is lower than the waterproof and breathable membrane in the axial direction of the high-pressure connecting rod.

[0013] Furthermore, the mounting component is provided with at least one protective protrusion, which protrudes along the axial direction of the high-pressure connecting rod and is higher than the waterproof and breathable membrane.

[0014] Furthermore, at least a portion of the second channel from the first end is an inclined section, and the height of the inclined section in the axial direction of the high-voltage connector decreases continuously from the first end to the second end.

[0015] On the other hand, this utility model provides an ignition coil, including the high-voltage connector and the coil body described above. The high-voltage connector is inserted into the spark plug mounting well, and one end of the high-voltage connector is connected to the coil body.

[0016] Furthermore, a sealing lip is provided on the outside of the high-pressure connector, and the high-pressure connector is interference-fitted with the spark plug mounting well through the sealing lip.

[0017] On the other hand, this utility model provides an ignition coil with an exhaust channel. The spark plug mounting well is connected to the outside of the ignition coil through the exhaust channel. A waterproof and breathable component is provided inside the exhaust channel, which isolates the exhaust channel. The outlet of the exhaust channel is not higher than the waterproof and breathable component in the axial direction of the ignition coil.

[0018] Furthermore, at least a portion of the exhaust channel from the waterproof ventilator to the section connecting to the outside of the ignition coil is an inclined section, and the height of the inclined section in the axial direction of the ignition coil continuously decreases from the waterproof ventilator towards the end connecting to the outside of the ignition coil.

[0019] Furthermore, the waterproof and breathable component includes an installation component and a waterproof and breathable membrane disposed on the installation component. At least one protective protrusion is provided on the end face of the installation component on which the waterproof and breathable membrane is disposed. The protective protrusion protrudes along the axial direction of the ignition coil and is higher than the waterproof and breathable membrane.

[0020] As described above, this utility model has the following beneficial effects: By setting a first channel and a second channel inside the high-voltage connector, and setting a waterproof and breathable component between the first and second channels, the high-voltage connector has both dustproof and waterproof functions. When the water level is higher than the dust cover of the high-voltage connector, the waterproof and breathable component can prevent water from entering the spark plug mounting well. The second end is not higher than the first end, which, in addition to achieving the venting function, can also timely drain the water accumulated on the surface of the waterproof and breathable membrane, preventing water from accumulating on the waterproof and breathable membrane and thus affecting its durability. Attached Figure Description

[0021] Figure 1 A schematic diagram of the structure of the ignition coil provided by this utility model;

[0022] Figure 2 for Figure 1 Enlarged view of A in the middle;

[0023] Figure 3 Schematic diagram of the high-voltage connecting rod Figure 1 ;

[0024] Figure 4 Schematic diagram of the high-voltage connecting rod Figure 2 ;

[0025] Figure 5 This is a structural diagram of the mounting component.

[0026] Label Explanation

[0027] 1-Coil body, 2-High voltage connector, 3-Spark plug mounting well, 4-Dust cover, 5-Sealing lip, 6-Rod body, 7-Through hole, 8-Waterproof and breathable component, 10-First channel, 11-Second channel, 12-Waterproof and breathable membrane, 13-Mounting component, 14-Inclined surface, 15-Boss, 16-Protective protrusion, 17-Connecting part, 18-Mounting groove, 19-Protruding rib. Detailed Implementation

[0028] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification.

[0029] It should be understood that the structures, proportions, sizes, etc., illustrated in the accompanying drawings of this specification are only for illustrative purposes to aid those skilled in the art and are not intended to limit the implementation of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effects and objectives of this utility model, should still fall within the scope of the technical content disclosed in this utility model. Furthermore, the terms such as "upper," "lower," "left," "right," "middle," and "one" used in this specification are merely for clarity of description and are not intended to limit the scope of implementation of this utility model. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of implementation of this utility model.

[0030] To provide a detailed description of this utility model, the high-voltage connector and ignition coil provided by this utility model will be specifically explained below. In this utility model, "high" and "low" refer to the sides closer to the ignition coil body along the axial direction of the high-voltage connector, which are considered "high," and the sides closer to the lower spark plug mounting well, which are considered "low."

[0031] like Figures 1 to 5 As shown, this utility model provides a high-voltage connector 2, including a body 6 and a waterproof and breathable component 8. The body 6 has a first channel 10 and a second channel 11. One end of the first channel 10 communicates with a spark plug mounting well 3, and the other end of the first channel 10 communicates with the second channel 11. The second channel 11 communicates with the outside of the ignition coil. A dust cover 4 is provided on the top of the high-voltage connector 2, and the outer diameter of the dust cover 4 is larger than the outer diameter of the piston mounting well.

[0032] The first end of the second channel 11 is connected to the first channel 10, and the second end is connected to the outside of the ignition coil. Along the axial direction of the high-voltage connecting rod 2, the end of the second channel 11 furthest from the first channel 10 is not higher than the end of the second channel 11 closest to the first channel 10; that is, the first end is higher than the second end or the first end is flush with the second end. When the top of the high-voltage connecting rod 2 leaves the water surface, the second channel 11 can drain the water.

[0033] The waterproof and breathable component 8 can be installed at the end of the second channel 11 away from the first channel 10, or it can be located between the second channel 11 and the first channel 10, or at the end of the first channel 10 away from the second channel 11, or both the second channel 11 and the first channel 10 can be equipped with the waterproof and breathable component 8. If the waterproof and breathable component 8 is installed at the end of the second channel 11 away from the first channel 10, the probability of the waterproof and breathable component 8 coming into contact with water is higher than other solutions, and the waterproof and breathable component 8 is also more prone to friction with other external components, leading to damage to the waterproof and breathable component 8. If the waterproof and breathable component 8 is located on the side of the first channel 10 away from the second channel 11, when the water level is higher than the top of the high-pressure connecting rod 2, water will enter the first channel 10. Although the waterproof and breathable component 8 can prevent water from entering the spark plug mounting well 3, the water in the first channel 10 cannot be discharged, affecting the breathability. Therefore, in this embodiment, the waterproof and breathable component 8 is installed between the first channel 10 and the second channel 11, which can prevent the waterproof and breathable component 8 from being damaged by friction and also prevent water from accumulating above the first channel 10, thus preventing gas from being discharged.

[0034] In some embodiments, the number of the first channel 10 and the second channel 11 corresponds one-to-one with the number of waterproof and breathable components 8. For example, one waterproof and breathable component 8 can be installed on the high-pressure connecting rod 2, or two or more can be installed. If two are installed, the two waterproof and breathable components 8 can be symmetrically arranged along the axis of the high-pressure connecting rod 2. If multiple waterproof and breathable components 8 are installed, they can be evenly arranged along the circumference of the high-pressure connecting rod 2.

[0035] The first channel 10 is arranged along the axial direction of the high-pressure connector 2. The axis of the first channel 10 is parallel to the axis of the high-pressure connector 2, which facilitates processing. The first channel 10 is located inside the sealing lip 5 of the high-pressure connector 2 and will not affect the connection between the high-pressure connector 2 and the spark plug mounting well 3.

[0036] The second channel 11 is at least partially inclined from the first end, and the height of the inclined section in the axial direction of the high-voltage connecting rod 2 continuously decreases from the first end to the second end. This allows for smooth drainage after the ignition coil leaves the water surface. In some embodiments, the second channel 11 can be inclined outwards from the waterproof vent 8, meaning the entire second channel 11 is an inclined hole, and its height continuously decreases from the first end to the second end in the axial direction of the high-voltage connecting rod. The second channel 11 can also be an inclined vent groove located on the top surface of the high-voltage connecting rod 2. Along the axial direction of the high-voltage connecting rod 2, the end of the second channel 11 closer to the waterproof vent 8 is higher than the end farther from the waterproof vent 8. The second channel 11 communicates with the outside of the ignition coil, allowing water to drain promptly when the water level of the ignition coil is lower than the dust cover 4 of the high-voltage connecting rod 2, reducing the impact on the waterproof vent 8.

[0037] In some implementations, a mounting groove 18 is provided inside the rod body 6, and the first channel 10 and the second channel 11 are respectively connected to the mounting groove 18. The waterproof and breathable component 8 is installed inside the mounting groove 18. A connecting groove is provided between the mounting groove 18 and the second channel 11, and the bottom of the connecting groove is an inclined surface. Figure 2 and Figure 4 As shown, the height of the inclined surface 14 along the axial direction of the high-pressure connecting rod continuously decreases from the side of the waterproof and breathable component towards the first end of the second channel 11, that is, the inclined surface 14 slopes downward from the side of the first channel 10 towards the side of the second channel 11. When the water level is higher than the top of the high-pressure connecting rod 2, the water will pass through the second channel 11 and the connecting groove in sequence, and finally come into contact with the waterproof and breathable component 8. When the water level is lower than the top of the waterproof and breathable component 8, the water will enter the second channel 11 along the inclined surface 14 of the connecting groove and then be discharged. This design allows water to be discharged in a timely manner, thereby preventing water from accumulating at the waterproof and breathable component 8 and affecting the breathability.

[0038] like Figure 2 As shown, the first channel 10 and the second channel 11 are located on both sides of the spark plug mounting well 3. The first channel 10 is located on the right side of the spark plug mounting well 3, and the second channel 11 is located on the left side of the spark plug mounting well 3.

[0039] In some embodiments, the waterproof and breathable component 8 is a waterproof and breathable membrane, which is directly installed on top of the first channel 10.

[0040] In some embodiments, for ease of installation, the waterproof and breathable component 8 includes a mounting component 13 and a waterproof and breathable membrane 12 mounted on the mounting component 13. The waterproof and breathable membrane 12 is mounted on the mounting component 13. A mounting groove 18 is provided on the high-pressure connecting rod 2, and the mounting component 13 is installed in the mounting groove 18. The first channel 10 and the second channel 11 are respectively connected to the mounting groove 18. A through hole 7 is provided in the mounting component 13. The first channel 10 is connected to the mounting groove 18 through the through hole 7, and then to the second channel 11. Gas in the spark plug mounting well 3 enters the through hole 7 through the first channel 10, then passes through the waterproof and breathable membrane 12, and then exits through the second channel 11. The through hole 7 and the first channel 10 are coaxially arranged, the inner diameter of the first channel 10 is the same as the inner diameter of the through hole 7, and the second channel 11 is parallel to the first channel 10.

[0041] To facilitate installation and prevent the waterproof and breathable membrane 12 from being damaged by abrasion, in some embodiments, the waterproof and breathable membrane 12 is installed at the end of the mounting member 13 away from the first channel 10, and the waterproof and breathable membrane 12 blocks the through hole 7, that is, the waterproof and breathable membrane 12 is installed on the top of the mounting member 13, so that water will not accumulate on the waterproof and breathable membrane 12, and at the same time, the waterproof and breathable membrane 12 will not rub against other places when the mounting member 13 is installed.

[0042] In some embodiments, the mounting groove 18 is a stepped groove, with the inner diameter of the end of the stepped groove away from the first channel 10 being larger than the inner diameter of the end closer to the first channel 10. The outer contour of the corresponding mounting member 13 is also set in a stepped shape. The mounting member 13 includes a connecting portion 17 and a boss portion 15. The boss portion 15 extends radially from one end of the connecting portion 17, and a through hole 7 is provided within the connecting portion 17. The diameter of the boss portion 15 is larger than the diameter of the connecting portion 17. The boss portion 15 is installed at the end away from the first channel 10, so that when the mounting member 13 mates with the mounting groove 18, the bottom end face of the boss portion 15 mates with the stepped surface of the stepped groove, which can limit the waterproof and breathable component.

[0043] To ensure a better fit between the mounting component 13 and the stepped groove, preventing water from entering the first channel 10 from the stepped groove, in some embodiments, the outer wall of the mounting component 13 is interference-fitted with the small-diameter section of the stepped groove. The inner wall of the small-diameter section of the stepped groove is provided with raised ribs 19, the inner diameter of which is smaller than the inner diameter of the stepped groove. These raised ribs 19 enhance the interference fit between the mounting component 13 and the stepped groove.

[0044] There are various ways to install the waterproof and breathable membrane 12 and the mounting component 13, which are not limited in this embodiment. For example, the waterproof and breathable membrane 12 can be fixed to the mounting component 13 by adhesive or welding.

[0045] The working principle of the waterproof and breathable membrane 12 is based on the difference in size between gas and liquid molecules. Gas molecules have a larger intermolecular distance and can diffuse through micropores, while liquid molecules have a smaller intermolecular distance and cannot pass through micropores due to surface tension, thus achieving both breathability and waterproofing. This application does not limit the material of the waterproof and breathable membrane 12; it can be made of various existing polymer waterproof materials. The waterproof and breathable membrane 12 can be PP spunbond nonwoven fabric, PE polymer breathable membrane, PTFE breathable membrane, etc.

[0046] The boss 15 can be integrally formed with the connecting part 17 or it can be designed separately and then installed with an interference fit between the boss 15 and the connecting part 17. Providing the boss 15 on the mounting part 13 facilitates installation. When installing the mounting part 13 and the mounting groove 18 using tools, the boss 15 can be rotated using the tools without contacting the connecting part 17. This prevents wear on the waterproof and breathable membrane 12, avoids affecting the precision of the connecting part 17, and does not affect the fit precision between the connecting part 17 and the mounting groove 18.

[0047] After the high-voltage connector 2 is connected to the coil body 1, the top of the high-voltage connector 2 contacts the coil body 1. To prevent the waterproof and breathable membrane 12 from directly contacting the coil body 1 and affecting the breathability, and also to prevent the coil body 1 from wearing through the waterproof and breathable membrane 12 and affecting the waterproof effect, at least one protective protrusion 16 is provided on the boss portion 15. Along the axial direction of the high-voltage connector 2, the protective protrusion 16 is higher than the waterproof and breathable membrane 12. When the coil body 1 is connected to the high-voltage connector 2, the top of the coil body 1 contacts the protective protrusion 16, and there is a certain gap between the waterproof and breathable membrane 12 and the coil body 1. The waterproof and breathable membrane 12 will not contact the coil body 1, and thus will not be worn.

[0048] In some embodiments, the protective protrusion 16 is disposed on the top surface of the boss portion 15 and extends in a direction away from the first channel 10. Of course, it is also feasible to provide the protective protrusion 16 on the side of the boss portion 15, but this would increase the size of the mounting groove 18, thereby increasing the size of the entire ignition coil.

[0049] After the high-voltage connector 2 and the coil body 1 are installed, the protective protrusion 16 contacts the coil body 1. The height of the protective protrusion 16 should be lower than the dust cover 4 so as not to affect the connection between the high-voltage connector 2 and the coil body 1.

[0050] To ensure good ventilation, the protective protrusion 16 is provided with a channel for gas to flow through. For example, if the protective protrusion 16 is provided on the entire circumference of the boss portion 15, at least one notch or hole is provided on the protective protrusion 16 so that the gas in the spark plug mounting well 3 can flow along the notch or hole and then be discharged from the second channel 11.

[0051] In this embodiment, as Figure 5 As shown, three protective protrusions 16 are evenly spaced along the circumference on the boss portion 15, and gas can flow through the gaps between the protective protrusions 16.

[0052] In some embodiments, to prevent water from remaining on the surface of the waterproof and breathable membrane 12, along the axial direction of the high-pressure connecting rod 2, the end face of the protrusion 15 away from the first channel 10 is lower than the waterproof and breathable membrane 12, forming a height difference between the protrusion 15 and the waterproof and breathable membrane 12. When there is water on the surface of the waterproof and breathable membrane 12, the water can flow naturally down the inclined surface formed by the height difference under the action of gravity. The height difference formed between the protrusion 15 and the waterproof and breathable membrane 12 can guide drainage, effectively preventing water from accumulating on the surface of the waterproof and breathable membrane 12 and preventing water accumulation. The inner wall of the protrusion 15 and the connecting portion 17 can be connected, or they can have a certain gap, such as... Figure 5As shown, the waterproof and breathable membrane 12 is easy to install. Even if water enters the area between the inner wall of the boss portion 15 and the connecting portion 17, the water will not enter the first channel 10 or accumulate between the inner wall of the boss portion 15 and the connecting portion 17 because the connecting portion 17 and the mounting groove 18 are interference fit. As long as water does not accumulate on the waterproof and breathable membrane 12, it will not affect the breathability or the durability of the waterproof and breathable membrane.

[0053] In some embodiments, the entire top surface of the boss portion 15 gradually slopes from the inner side near the waterproof and breathable membrane 12 to the outer side away from the waterproof and breathable membrane 12, which is more conducive to drainage. The entire top surface of the boss portion 15 can also be partially sloped from the inside to the outside. For example, a height difference can be formed between the boss portion 15 on the side near the second channel 11 and the waterproof and breathable membrane 12, while the boss portion 15 on the side away from the second channel 11 may not have a height difference with the waterproof and breathable membrane 12. In this way, water will flow away from the boss portion 15 on the side of the second channel 11. Alternatively, the boss portion 15 can be designed as a slope, with the left side near the second channel 11 being higher than the right side away from the second channel 11, but the overall size is lower than the waterproof and breathable membrane 12, forming a left-low and right-high shape, which also has a good drainage effect.

[0054] In some embodiments, the end of the connecting portion 17 away from the first channel 10 can also be set in an inclined shape. Along the axial direction of the high-pressure connecting rod 2, the side of the connecting portion 17 near the second channel 11 is lower than the side away from the second channel 11. That is, from the cross-sectional view of the connecting portion 17, the top of the connecting portion 17 is inclined and tilted downward towards the second channel 11. This is equivalent to the entire waterproof and breathable membrane 12 being an inclined surface. The inclined waterproof and breathable membrane 12, the boss portion 15 and the second channel 11 form a height difference in sequence, forming a double protection against water accumulation.

[0055] This utility model also provides an ignition coil, including the aforementioned high-voltage connector 2 and a coil body 1. The coil body 1 is interference-fitted with the high-voltage connector 2. The coil body 1 is disposed on the top of the high-voltage connector 2. A sealing lip 5 is provided on the outer circumferential surface of the high-voltage connector 2. The high-voltage connector 2 is interference-fitted with the spark plug mounting well 3 through the sealing lip 5.

[0056] This utility model also provides an ignition coil, which includes a coil body 1 and a high-voltage connector 2. The high-voltage connector 2 passes through a spark plug mounting well 3, and one end of the high-voltage connector 2 is connected to the coil body 1. An exhaust channel is provided on the ignition coil, and the spark plug mounting well 3 is connected to the outside of the ignition coil through the exhaust channel. A waterproof and breathable component 8 is provided inside the exhaust channel, and the outlet of the exhaust channel is not higher than the waterproof and breathable component 8 in the axial direction of the ignition coil. The exhaust channel can be located on the high-voltage connector 2 or on the ignition coil body 1. Along the axial direction of the ignition coil, as long as the waterproof and breathable component 8 is lower than or flush with the outlet of the exhaust channel, even if water enters the waterproof and breathable component 8 through the exhaust channel, the water can be discharged promptly after the ignition coil leaves the water surface, without affecting the breathability.

[0057] In some embodiments, the outlet of the exhaust channel is from the waterproof and breathable element 8, and the height of the exhaust channel in the ignition coil axial direction is continuously reduced.

[0058] In some embodiments, the high-voltage connector 2 is provided with a mounting groove 18 and a first channel 10 and a second channel 11 respectively communicating with the mounting groove 18. The end of the second channel 11 communicating with the first channel 10 is the first end, and the end of the second channel 11 communicating with the outside of the ignition coil is the second end. One end of the first channel 10 is used to communicate with the spark plug mounting well 3, and the other end of the first channel 10 communicates with the outside of the ignition coil through the second channel 11. A waterproof and breathable component 8 is installed in the mounting groove 18, separating the second channel 11 from the first channel 10. The mounting groove 18 has an opening for the waterproof and breathable component 8 to pass through, with the opening facing the coil body 1. The coil body 1 seals the opening and forms an exhaust channel. A connecting groove is provided between the mounting groove 18 and the second channel 11, with one end communicating with the mounting groove 18 and the other end communicating with the second channel 11. The bottom of the connecting groove is set as an inclined surface to facilitate drainage. In this embodiment, the connecting groove of the first channel 10 and the second channel 11 forms an exhaust channel.

[0059] At least a portion of the exhaust channel from the waterproof venting component 8 to the section connecting to the outside of the ignition coil is an inclined section. This can be understood as the connecting groove being the inclined section. The axial height of the inclined section on the high-voltage connector 2 continuously decreases from the waterproof venting component towards the end connecting to the outside of the ignition coil. The axial height of the inclined section on the high-voltage connector 2 continuously decreases from the first end to the second end, thus allowing for smooth drainage when the ignition coil leaves the water surface.

[0060] In some embodiments, the waterproof and breathable component 8 includes a mounting component 13 and a waterproof and breathable membrane disposed on the mounting component 13. At least one protective protrusion 16 is provided on one side of the mounting component 13 where the waterproof and breathable membrane 12 is disposed. The protective protrusion 16 protrudes axially along the high-pressure connecting rod 2 and is higher than the waterproof and breathable membrane 12.

[0061] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. A high-voltage joint rod, characterized in that, include: The rod body has a first channel and a second channel that are interconnected. One end of the first channel is connected to the spark plug mounting well, and the other end of the first channel is connected to the outside of the ignition coil through the second channel. A waterproof and breathable component is disposed on one end of the first channel and the second channel, thereby isolating the second channel from the first channel; Wherein, the end of the second channel that is connected to the first channel is the first end, the end of the second channel that is connected to the outside of the ignition coil is the second end, and the second end is not higher than the first end in the axial direction of the high-voltage connector.

2. The high pressure contact rod according to claim 1, characterized in that The rod body is provided with an installation groove, and the first channel and the second channel are respectively connected to the installation groove. The waterproof and breathable component is installed in the installation groove. The waterproof and breathable component includes an installation component and a waterproof and breathable membrane disposed on the installation component. The installation component has a through hole that communicates with the first channel and the second channel. The waterproof and breathable membrane is installed on the end of the installation component away from the first channel and blocks the through hole.

3. The high pressure contact rod of claim 2, wherein, The mounting groove is a stepped groove, and the waterproof and breathable component is disposed in the stepped groove. The inner diameter of the stepped groove at the end away from the first channel is larger than the inner diameter of the stepped groove at the end near the first channel. The mounting component includes a connecting part, one end of which extends radially to form a boss. The boss abuts against the stepped surface of the stepped groove, and the waterproof and breathable membrane is disposed on the boss.

4. The high pressure contact rod of claim 3, wherein, The end face of the protrusion, away from the first channel, is lower than the waterproof and breathable membrane in the axial direction of the high-pressure connector.

5. The high pressure contact rod of claim 3, wherein, At least one protective protrusion is provided on the boss portion, the protective protrusion protrudes along the axial direction of the high-pressure connecting rod and is higher than the waterproof and breathable membrane.

6. The high pressure contact rod according to any one of claims 1 to 5, characterized in that The second channel is at least partially inclined from the first end, and the height of the inclined section in the axial direction of the high-voltage connector decreases continuously from the first end to the second end.

7. An ignition coil characterized by, The device includes the high-voltage connector and coil body as described in any one of claims 1-6, wherein the high-voltage connector is inserted into the spark plug mounting well, and one end of the high-voltage connector is connected to the coil body.

8. The ignition coil of claim 7, wherein A sealing lip is provided on the outer circumferential surface of the high-pressure connector, and the high-pressure connector is interference-fitted with the spark plug mounting well through the sealing lip.

9. An ignition coil characterized by, An exhaust channel is provided on the ignition coil, and the spark plug mounting well is connected to the outside of the ignition coil through the exhaust channel. A waterproof and breathable component is provided inside the exhaust channel, which isolates the exhaust channel. The outlet of the exhaust channel is not higher than the waterproof and breathable component in the axial direction of the ignition coil.

10. The ignition coil of claim 9, wherein At least a portion of the exhaust passage from the waterproof and breathable component to the section connecting to the outside of the ignition coil is an inclined section, and the height of the inclined section in the axial direction of the ignition coil continuously decreases from the waterproof and breathable component toward the end connecting to the outside of the ignition coil.

11. The ignition coil according to claim 9 or 10, characterized in that The waterproof and breathable piece comprises a mounting piece and a waterproof and breathable film arranged on the mounting piece, at least one protective protrusion is arranged on the end surface of the mounting piece on which the waterproof and breathable film is arranged, the protective protrusion protrudes along the axial direction of the ignition coil and is higher than the waterproof and breathable film.

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