CN220821284U - Dustproof and waterproof structure of ignition coil - Google Patents
Dustproof and waterproof structure of ignition coil Download PDFInfo
- Publication number
- CN220821284U CN220821284U CN202322492334.2U CN202322492334U CN220821284U CN 220821284 U CN220821284 U CN 220821284U CN 202322492334 U CN202322492334 U CN 202322492334U CN 220821284 U CN220821284 U CN 220821284U
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- connecting rod
- ignition coil
- waterproof
- pressure
- pressure connecting
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- 238000007789 sealing Methods 0.000 claims description 19
- 230000006835 compression Effects 0.000 claims description 10
- 238000007906 compression Methods 0.000 claims description 10
- 230000002265 prevention Effects 0.000 abstract description 8
- 239000000428 dust Substances 0.000 abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 4
- 230000000694 effects Effects 0.000 description 2
- 238000007792 addition Methods 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- Ignition Installations For Internal Combustion Engines (AREA)
Abstract
The utility model relates to a dustproof and waterproof structure of an ignition coil, which comprises a waterproof piece positioned between an ignition coil body and a high-pressure connecting rod, wherein the waterproof piece comprises an inner contact surface and an annular surface, the inner contact surface is connected with the end surface of the high-pressure connecting rod, the annular surface is in interference fit with the outer circumferential surface of the high-pressure connecting rod, the ignition coil body is positioned above the plane of the waterproof piece, and the waterproof piece is pressed on the high-pressure connecting rod by the ignition coil body. The utility model provides a dustproof and waterproof structure of an ignition coil, which has a simple structure and can simultaneously realize the requirements of dust prevention and water prevention in a high-pressure space area of the ignition coil; the technical problems that in the prior art, a high-pressure connecting rod and an engine cylinder cover can only be dustproof and waterproof, and an ignition coil high-pressure conduction area can only be dustproof and waterproof are solved.
Description
Technical Field
The utility model relates to a dustproof and waterproof structure, in particular to a dustproof and waterproof connecting structure of an ignition coil body, a high-pressure connecting rod and an engine cylinder cover.
Background
Usually, the ignition coil of the automobile has only dustproof requirements, along with the continuous enrichment of automobile functions and better driving experience, new waterproof requirements are also added to the ignition coil, and the ignition coil used in the current market is mainly connected with an engine cylinder cover in an assembling way through the high-voltage extension rod extending out of the ignition coil body to realize the dustproof function. The compression spring inside the high-pressure connecting rod is electrically connected with the spark plug, the inner circle of the head of the high-pressure connecting rod is in radial interference fit with the outer circle of the spark plug to realize high-pressure protection, the sealing lip on the high-pressure connecting rod is generally provided with an air permeable groove which is in radial interference fit with the engine cylinder cover, and the high-pressure connecting rod in the scheme is axially provided with the air permeable groove which is in axial interference fit with the engine cylinder cover and is provided with the air permeable groove to realize the dustproof exhaust requirement. The sealing lip on the high-pressure connecting rod of another structure is provided with an air vent and radial interference fit of the engine cylinder cover, the high-pressure connecting rod of the scheme is also provided with an air vent groove and an ignition coil body which are axially matched, the high-pressure connecting rod is in interference fit with the engine cylinder cover and is provided with the air vent groove to realize dustproof exhaust requirements, but waterproof requirements cannot be realized, and therefore the requirements of dust prevention and waterproof cannot be simultaneously met.
Disclosure of Invention
The utility model provides a dustproof and waterproof structure of an ignition coil, which has a simple structure and can simultaneously realize the requirements of dust prevention and water prevention in a high-pressure space area of the ignition coil; the technical problems that in the prior art, a high-pressure connecting rod and an engine cylinder cover can only be dustproof and waterproof, and an ignition coil high-pressure conduction area can only be dustproof and waterproof are solved.
The technical problems of the utility model are solved by the following technical scheme: the utility model provides an ignition coil's dustproof and waterproof structure, is including being located the waterproof piece between ignition coil body and the high-pressure connecting rod, waterproof piece include interior contact surface and annular face, interior contact surface meets with the terminal surface of high-pressure connecting rod, annular face and the outer circumferential surface interference fit of high-pressure connecting rod, ignition coil body is located the plane top of waterproof piece, ignition coil body presses waterproof piece to fit on the high-pressure connecting rod. The waterproof piece is in interference fit with the high-pressure connecting rod, the waterproof piece is in compression contact with the end face of the high-pressure connecting rod, the waterproof and dustproof functions of the outside of the ignition coil are achieved, the high-pressure connecting rod is assembled with the ignition coil body after being filled into the compression spring, the high-pressure connecting rod is assembled with a high-pressure tower on the ignition coil body in an interference mode, the relative position and the interference magnitude of the waterproof piece and the high-pressure connecting rod are further guaranteed, finally the waterproof piece is locked with the engine cylinder cover through bolts, and the integral dustproof and waterproof requirements are achieved through interference of the high-pressure connecting rod and the engine cylinder cover in the height direction and interference of a sealing lip on the round side.
Preferably, the high-voltage connecting rod comprises a disc-shaped connecting end and a cylindrical main body, the waterproof piece is cylindrical, one end of the waterproof piece is provided with an opening, the waterproof piece is covered on the disc-shaped connecting end, a through hole which is coaxial with the central through hole of the high-voltage connecting rod in the equal size is formed in the center of the waterproof piece, and the through hole is used for installing the ignition coil body. The waterproof piece is similar to a cover body and covers the disc-shaped end part of the high-pressure connecting rod. Thereby realizing dust prevention and water prevention.
Preferably, the outer circumferential surface of the main body of the high-pressure connecting rod is provided with a sealing lip, and the sealing lip is in interference fit with the inner circular matching surface of the engine cylinder cover. The radial interference increases a waterproof effect.
Preferably, a sealing structure is arranged between the waterproof piece and the high-pressure connecting rod, and the sealing structure is a sealing rib which is arranged on the end face of the high-pressure connecting rod and is close to the central through hole. After the high-pressure connecting rod is in interference fit with the waterproof piece, the waterproof between the high-pressure connecting rod and the inner side of the waterproof piece is realized through the sealing rib.
Preferably, a depressurization structure is arranged between the waterproof piece and the high-pressure connecting rod, and the depressurization structure comprises a depressurization groove formed in the end face of the high-pressure connecting rod. The design of the depressurization groove reduces the pressure difference influence of the air in the sealed space around the spark plug due to temperature variation.
Preferably, the pressure reducing structure further comprises a pressure reducing lip formed on the annular surface of the high-pressure connecting rod.
Preferably, the center of the high-pressure connecting rod is provided with a through hole, the connecting section of the ignition coil body and the high-pressure connecting rod is a cylindrical high-pressure column, and the high-pressure column is in interference fit with the through hole in the center of the high-pressure connecting rod.
Preferably, a compression spring is arranged in the through hole in the center of the high-voltage connecting rod, and one end of the compression spring is connected with the resistor cap in the ignition coil body.
Therefore, the dustproof and waterproof structure of the ignition coil has the following advantages: through the design of the waterproof piece, the product can be waterproof while being dustproof; meanwhile, through the design of the depressurization groove, the pressure difference of the air in the sealing space around the spark plug due to temperature variation is reduced; the overall structure realizes the dustproof and waterproof effect through the axial and radial interference fit and the design of the waterproof piece.
Drawings
Fig. 1 is a perspective view of a dust-proof and water-proof structure of an ignition coil.
Fig. 2 is a cross-sectional view of the engine head of fig. 1 mounted thereto.
Fig. 3 is an exploded view of the high pressure extension rod and waterproof member of fig. 1.
Detailed Description
The technical scheme of the utility model is further specifically described below through examples and with reference to the accompanying drawings.
Example 1:
As shown in fig. 1, 2 and 3, a dustproof and waterproof structure of an ignition coil includes a high-voltage connection rod 2, an ignition coil body 1 and an engine cover 9, which are connected to each other.
The high-pressure crimp shaft 2 includes a disc-shaped connecting end 11 and a cylindrical body 12. The diameter of the connecting end 11 is larger than that of the main body 12, a through hole is formed in the center of the high-pressure connecting rod 2, and a high-pressure column body 13 in the center of the ignition coil body is in interference fit in the through hole. A cylindrical waterproof piece 4 with one end open is sleeved outside the connecting end 11. The waterproof member 4 is interference-fitted with the outer circumferential surface of the connection end 11. A through hole 14 corresponding to the through hole in the center of the high-voltage connecting rod is arranged in the center of the waterproof piece 4 and is used for installing a high-voltage column body 13 in the center of the ignition coil body. The plane of the waterproof piece contacted with the end face of the high-voltage connecting rod is a smooth surface.
The end face of the connecting end 11 of the high-pressure connecting rod is a plane, an annular sealing rib 8 is formed on the end face of the high-pressure connecting rod, and the sealing rib 8 is arranged at a position close to the central through hole. Meanwhile, a pressure reducing groove 7 is formed on the end face, and a pressure reducing lip 6 is formed on the outer circumferential surface of the connecting end.
The shaft shoulder surface of ignition coil body 1 presses in waterproof piece 4 top, waterproof piece 4 and the tip interference fit of high-pressure connecting rod 2, guarantee the waterproof at inboard position through sealing rib 8 and waterproof piece interference fit, the outside is put through with waterproof piece 4 interference fit and outside through depressurization groove 7 and depressurization lip 6, thereby reach the depressurization waterproof, outside and waterproof district still have high-pressure connecting rod exhaust hole intercommunication through depressurization lip 6 and depressurization groove 7, establish the interference waterproof between high-pressure connecting rod 2 and the waterproof piece 4 assembly semi-manufactured goods, the depressurization groove of seting up reaches the guard area and outside atmospheric pressure is close the same.
After the waterproof and breathable assembly is arranged on the high-pressure connecting rod 2, a compression spring 3 is arranged in the high-pressure connecting rod 2, and then the ignition coil body 1 is arranged. One end of a compression spring 3 in the high-voltage connecting rod 2 is contacted with a resistor cap of a fixed value resistor in the ignition coil body 1, the other end of the compression spring 3 is contacted with a spark plug, interference fit is carried out between the inner circle of the head of the high-voltage connecting rod and the outer circle of the spark plug to realize high-voltage protection, the circuit from the ignition coil body to the high-voltage electrode of the spark plug is conducted, the spark plug is arranged on the engine body, after primary current in the ignition coil body is turned off, a secondary inductor discharges high-voltage electricity, high-voltage breakdown discharge is carried out on a spark plug discharge electrode in the engine, electric energy and heat energy conversion is realized, and ignition of the engine is realized.
The outer circumferential surface of the high-pressure connecting rod is provided with a sealing lip 5, the sealing lip 5 is in interference fit with the inner circular matching surface of the engine cylinder cover 9, and a waterproof layer is added in the radial direction.
The high-pressure connecting rod is arranged in the height direction of the ignition coil, the matching surface between the high-pressure connecting rod and the engine cylinder cover is provided with interference, and the axial interference realizes water prevention.
The specific embodiments described herein are merely illustrative of the principles of the present invention. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions thereof without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.
Claims (8)
1. An ignition coil's dustproof and waterproof structure, its characterized in that: the waterproof piece comprises an inner contact surface and an annular surface, wherein the inner contact surface is connected with the end surface of the high-pressure connecting rod, the annular surface is in interference fit with the outer circumferential surface of the high-pressure connecting rod, the ignition coil body is located above the plane of the waterproof piece, and the ignition coil body presses the waterproof piece on the high-pressure connecting rod.
2. The dustproof and waterproof structure of an ignition coil according to claim 1, characterized in that: the high-voltage connecting rod comprises a disc-shaped connecting end and a cylindrical main body, the waterproof piece is cylindrical, one end of the waterproof piece is provided with an opening, the waterproof piece is covered on the disc-shaped connecting end, a through hole which is coaxial with the central through hole of the high-voltage connecting rod is formed in the center of the waterproof piece, and the through hole is used for installing the ignition coil body.
3. The dustproof and waterproof structure of an ignition coil according to claim 2, characterized in that: the outer circumferential surface of the main body of the high-pressure connecting rod is provided with a sealing lip which is in interference fit with the inner circular matching surface of the engine cylinder cover.
4. A dust-proof and water-proof structure of an ignition coil according to claim 1, 2 or 3, characterized in that: a sealing structure is arranged between the waterproof piece and the high-pressure connecting rod, and the sealing structure is a sealing rib which is arranged on the end face of the high-pressure connecting rod and is close to the central through hole.
5. A dust-proof and water-proof structure of an ignition coil according to claim 1, 2 or 3, characterized in that: a pressure reducing structure is arranged between the waterproof piece and the high-pressure connecting rod and comprises a pressure reducing groove arranged on the end face of the high-pressure connecting rod.
6. The dustproof and waterproof structure of an ignition coil according to claim 5, characterized in that: the pressure reducing structure also comprises a pressure reducing lip formed on the annular surface of the high-pressure connecting rod.
7. A dust-proof and water-proof structure of an ignition coil according to claim 1, 2 or 3, characterized in that: the center of the high-pressure connecting rod is provided with a through hole, the connecting section of the ignition coil body and the high-pressure connecting rod is a cylindrical high-pressure column, and the high-pressure column is in interference fit with the through hole in the center of the high-pressure connecting rod.
8. A dust-proof and water-proof structure of an ignition coil according to claim 1, 2 or 3, characterized in that: a compression spring is arranged in the through hole in the center of the high-voltage connecting rod, and one end of the compression spring is connected with a resistor cap in the ignition coil body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322492334.2U CN220821284U (en) | 2023-09-14 | 2023-09-14 | Dustproof and waterproof structure of ignition coil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322492334.2U CN220821284U (en) | 2023-09-14 | 2023-09-14 | Dustproof and waterproof structure of ignition coil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220821284U true CN220821284U (en) | 2024-04-19 |
Family
ID=90711662
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322492334.2U Active CN220821284U (en) | 2023-09-14 | 2023-09-14 | Dustproof and waterproof structure of ignition coil |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220821284U (en) |
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2023
- 2023-09-14 CN CN202322492334.2U patent/CN220821284U/en active Active
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