Weatherproof sealed high-stability all-terrain ignition coil

Abstract

The utility model belongs to the technical field of ignition coil, and relates to a weather-proof sealed high-stability all-terrain ignition coil. The iron core assembly is sleeved with a secondary framework and wound with a secondary coil, and the secondary coil is connected with a low-voltage terminal and a high-voltage terminal. The secondary framework is sleeved with a primary framework and wound with a primary coil, the primary coil is connected with two socket terminal pieces on both sides of the socket, and the middle socket terminal piece is connected with a secondary terminal piece and a diode. The primary framework is sleeved with a magnetic conducting cylinder and an outer shell. The upper end of the outer shell is filled with an epoxy resin, the outer shell is sleeved with a sealing rubber sleeve, a conductive spring is installed at the lower end of the outer shell, and the conductive spring is inserted into the connecting rubber sleeve in an interference fit. The upper end of the conductive spring is connected with the high-voltage terminal, and the lower end of the conductive spring abuts against the inner wall of the connecting rubber sleeve. The utility model ensures stable insulation performance of the winding, reduces ignition failure, avoids damage to the circuit insulation and reduction of heat dissipation efficiency, prolongs service life, and improves weather-proof sealing performance and operation stability of the ignition coil in all-terrain driving.

Description

Technical Field

[0001] This utility model relates to a weather-resistant, sealed, high-stability, all-ground ignition coil, belonging to the field of ignition coil technology. Background Technology

[0002] In automotive ignition systems, the ignition coil is a core component, and its performance directly determines the engine's ignition efficiency and operational stability. Especially in all-terrain driving scenarios (such as off-road, mountain, high-altitude and high-temperature environments), the requirements for its environmental adaptability, structural sealing, and resistance to road condition interference are extremely high.

[0003] In terms of material weather resistance, the primary and secondary frames of traditional ignition coils are mostly made of PBT (polybutylene terephthalate). This material has limited cold and high temperature resistance. It is prone to brittle cracking in low temperature environments below -30℃ and deformation in high temperature environments above 120℃, which will lead to a decrease in the insulation performance of the coil winding and thus cause ignition failure. In terms of sealing structure design, the sealing sleeves of existing products often expose the vent holes directly on the surface without any hidden protection. Under complex road conditions such as mud, water crossing, rain and snow, water and mud can easily seep into the coil through the vent holes, damaging the circuit insulation. External dust can also accumulate through the vent holes, affecting the coil's heat dissipation efficiency and shortening its service life. In terms of stability under complex road conditions, traditional ignition coils are not equipped with a dedicated mounting and fixing structure. They rely solely on simple assembly and positioning between the outer shell and the engine compartment. When the vehicle faces severe bumps and vibrations during all-terrain driving, the ignition coil is prone to displacement and loosening, which leads to a decrease in the stability of the connection with the spark plug, and may even cause ignition interruption, affecting the normal operation of the engine. Utility Model Content

[0004] To address the problems existing in the background technology, this utility model provides a weather-resistant, sealed, high-stability all-ground ignition coil.

[0005] To achieve the above objectives, this utility model adopts the following technical solution: a weather-resistant, sealed, high-stability all-ground ignition coil, comprising a connecting sleeve, a conductive spring, a magnetic cylinder, a primary frame, a secondary frame, a housing, a socket, a diode, a low-voltage connector, epoxy resin, a sealing sleeve, a primary coil, a secondary coil, a high-voltage connector, and an iron core assembly; the iron core assembly includes an iron core, a permanent magnet, and an insulating pad; a permanent magnet is mounted on the upper end face of the iron core, and insulating pads are mounted on the upper end face of the permanent magnet and the lower end face of the iron core; a secondary frame is fitted around the outside of the iron core assembly, and a secondary coil is wound around the outer surface of the secondary frame; the first end of the secondary coil is connected to one end of the low-voltage connector, and the last end of the secondary coil is connected to one end of the high-voltage connector; a primary frame is fitted around the outside of the secondary frame, and the primary frame... A primary coil is wound around the outer surface of the frame. The first end of the primary coil is connected to one of the three socket terminals on the socket, and the last end of the primary coil is connected to the other of the three socket terminals. One end of the middle socket terminal is connected to the other end of the low-voltage terminal, and the other end of the middle socket terminal is connected to one end of the diode. A magnetic cylinder is fitted around the outside of the primary frame, and an outer shell is fitted around the outside of the magnetic cylinder. Epoxy resin is filled into the upper gap of the outer shell, and a sealing sleeve is fitted around the outer wall of the outer shell. A conductive spring is installed at the lower end inside the outer shell, and the lower end of the outer shell is press-fitted into the connecting sleeve. The upper end of the conductive spring is connected to the other end of the high-voltage terminal, and the lower end of the conductive spring abuts against the inner wall of the connecting sleeve.

[0006] Furthermore, both the primary and secondary skeletons are made of PPS.

[0007] Furthermore, the surface of the sealing sleeve is provided with a groove, and the vent hole of the sealing sleeve is located in the groove.

[0008] Furthermore, a mounting sleeve is fixedly installed on the outer side of the outer shell.

[0009] Furthermore, a noise reduction resistor and a copper sleeve are installed at the lower end of the secondary frame. One end of the noise reduction resistor is connected to the high-voltage terminal block, and the other end of the noise reduction resistor is connected to the upper end of the conductive spring. The copper sleeve is fitted on the outside of the noise reduction resistor and is interference-fitted with the secondary frame.

[0010] Furthermore, the diode is a unidirectional diode.

[0011] Compared with the prior art, the beneficial effects of this utility model are: This invention uses PPS material to replace traditional PBT in the primary and secondary skeletons, significantly improving the resistance to brittle cracking at temperatures below -30℃ and the resistance to deformation at temperatures above 120℃. This ensures stable winding insulation performance and reduces ignition failures. The vent hole of the sealing sleeve is hidden in the surface groove, effectively preventing mud, water, rain, snow, and dust from entering through the vent hole, avoiding damage to circuit insulation and reduced heat dissipation efficiency, and extending service life. The outer side of the housing is fixed with an installation sleeve to strengthen the assembly and positioning with the engine compartment. This prevents the ignition coil from shifting or loosening under severe bumps, vibrations, and other complex road conditions, ensuring stable connection with the spark plug, preventing ignition interruption, ensuring normal engine operation, and overall improving the weather resistance, sealing, and operational stability of the ignition coil in all-terrain driving. Attached Figure Description

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

[0013] The technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of the utility model, not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the protection scope of this utility model.

[0014] A weather-resistant, sealed, high-stability all-ground ignition coil includes a connecting sleeve 1, a conductive spring 2, a magnetic cylinder 5, a primary frame 6, a secondary frame 7, a housing 9, a socket 10, a diode 12, a low-voltage connector 13, epoxy resin 14, a sealing sleeve 16, a primary coil 18, a secondary coil 19, a high-voltage connector 20, and an iron core assembly. The iron core assembly includes an iron core 4, a permanent magnet 8, and an insulating pad 15. The permanent magnet 8 is mounted on the upper end face of the iron core 4, and insulating pads 15 are mounted on both the upper end face of the permanent magnet 8 and the lower end face of the iron core 4. The secondary frame 7 is fitted around the outside of the iron core assembly, and the secondary coil 19 is wound around the outer surface of the secondary frame 7 in a specific manner. The first end of the secondary coil 19 is connected to one end of the low-voltage connector 13, and the last end of the secondary coil 19 is connected to one end of the high-voltage connector 20. The primary frame 6 is fitted around the outside of the secondary frame 7, and the outer surface of the primary frame 6 is wound around the primary frame 6 in a specific manner. A primary coil 18 is wound around a primary coil 18. The first end of the primary coil 18 is connected to one of the three socket terminals 11 on the socket 10, and the last end of the primary coil 18 is connected to the other of the three socket terminals 11. One end of the middle socket terminal 11 is connected to the other end of the low-voltage terminal 13, and the other end of the middle socket terminal 11 is connected to one end of the diode 12. A magnetic cylinder 5 is fitted on the outside of the primary frame 6, and a housing 9 is fitted on the outside of the magnetic cylinder 5. Epoxy resin 14 is filled into the upper gap of the housing 9, and a sealing sleeve 16 is fitted on the outer wall of the housing 9. A conductive spring 2 is installed at the lower end inside the housing 9, and the lower end of the outer side of the housing 9 is interference-fitted with a connecting sleeve 1. The upper end of the conductive spring 2 is connected to the other end of the high-voltage terminal 20, and the lower end of the conductive spring 2 abuts against the inner wall of the connecting sleeve 1.

[0015] Furthermore, both the primary skeleton 6 and the secondary skeleton 7 are made of PPS.

[0016] Furthermore, the surface of the sealing sleeve 16 is provided with a groove, and the vent hole of the sealing sleeve 16 is located in the groove.

[0017] Furthermore, the outer side of the outer shell 9 is fixedly fitted with a mounting sleeve 17.

[0018] Furthermore, a noise reduction resistor 3 and a copper sleeve 21 are installed at the lower end of the secondary frame 7. One end of the noise reduction resistor 3 is connected to the high-voltage terminal block 20, and the other end of the noise reduction resistor 3 is connected to the upper end of the conductive spring 2. The copper sleeve 21 is fitted on the outside of the noise reduction resistor 3 and is interference-fitted with the secondary frame 7.

[0019] Furthermore, the diode 12 is a unidirectional diode, which only allows the positive high voltage current induced by the secondary coil 19 when the primary coil 18 is de-energized to pass through.

[0020] The working process of this utility model is as follows: An external power source supplies current to the primary coil 18 through the two side terminals of the three socket terminals 11 on the socket 10. At the instant the current is turned on, an induced electromagnetic field is formed around the primary coil 18. This electromagnetic field passes through the magnetic cylinder 5 and the secondary frame 7 and acts on the secondary coil 19, causing a reverse induced current to be generated in the secondary coil 19. At this time, the current intensity is low and it does not have the ability to ignite.

[0021] When the external power supply to the primary coil 18 is suddenly interrupted, the induced electromagnetic field around the primary coil 18 rapidly decays and disappears. According to the principle of electromagnetic induction, the rapid change in the electromagnetic field will induce a high-intensity positive high-voltage voltage in the secondary coil 19, which can meet the spark plug ignition requirements and complete the energy conversion from low-voltage input to high-voltage output.

[0022] Because the socket terminal 11 in the middle of the socket 10 is connected in series with the low-voltage terminal 13 and the diode 12 to form a circuit, and the diode 12 has a unidirectional conduction characteristic, allowing only forward current to pass through, this structure can block the reverse current generated by the secondary coil 19 during the power-on phase, allowing only the forward high-voltage current generated during the power-off phase to be transmitted smoothly. The forward high-voltage current is first output through the high-voltage terminal 20 connected to the secondary coil 19, and then passes through the noise reduction resistor 3 to suppress electromagnetic noise during the high-voltage transmission process, ensuring current stability, and the conductive spring 2 at the lower end of the casing 9, and finally transmitted to the spark plug that is adapted to the connecting sleeve 1, triggering the spark plug to discharge and ignite, completing the entire ignition drive process.

[0023] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of the equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0024] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A weather-resistant, sealed, high-stability, all-ground ignition coil, characterized in that: The system includes a connecting sleeve (1), a conductive spring (2), a magnetic cylinder (5), a primary frame (6), a secondary frame (7), a housing (9), a socket (10), a diode (12), a low-voltage connector (13), epoxy resin (14), a sealing sleeve (16), a primary coil (18), a secondary coil (19), a high-voltage connector (20), and an iron core assembly; the iron core assembly includes an iron core (4), a permanent magnet (8), and an insulating pad (15); the upper end face of the iron core (4) is equipped with a permanent magnet (8), and the permanent magnet (8) is... Insulating pads (15) are installed on the upper end face of the magnet (8) and the lower end face of the iron core (4); a secondary frame (7) is fitted on the outside of the iron core assembly, and a secondary coil (19) is wound on the outer surface of the secondary frame (7). The first end of the secondary coil (19) is connected to one end of the low-voltage terminal block (13), and the end of the secondary coil (19) is connected to one end of the high-voltage terminal block (20); a primary frame (6) is fitted on the outside of the secondary frame (7), and a primary coil (18) is wound on the outer surface of the primary frame (6). The first end of the primary coil (18) is connected to the socket terminal (11) on one side of the three socket terminals (11) on the socket (10), and the end of the primary coil (18) is connected to the socket terminal (11) on the other side of the three socket terminals (11); one end of the socket terminal (11) in the middle of the three socket terminals (11) is connected to the other end of the low-voltage terminal (13), and the other end of the socket terminal (11) in the middle is connected to one end of the diode (12); the primary frame ( 6) is fitted with a magnetic tube (5) on the outside, and a shell (9) is fitted on the outside of the magnetic tube (5); epoxy resin (14) is filled into the upper gap of the shell (9), a sealing sleeve (16) is fitted on the outer wall of the shell (9), a conductive spring (2) is installed at the lower end inside the shell (9), and the lower end of the outer side of the shell (9) is press-fitted to the connecting sleeve (1); the upper end of the conductive spring (2) is connected to the other end of the high voltage terminal piece (20), and the lower end of the conductive spring (2) abuts against the inner wall of the connecting sleeve (1).

2. The weather-resistant, sealed, high-stability all-ground ignition coil according to claim 1, characterized in that: The primary skeleton (6) and the secondary skeleton (7) are both made of PPS.

3. The weather-resistant, sealed, high-stability all-ground ignition coil according to claim 1, characterized in that: The surface of the sealing sleeve (16) is provided with a groove, and the vent hole of the sealing sleeve (16) is located in the groove.

4. The weather-resistant, sealed, high-stability all-ground ignition coil according to claim 1, characterized in that: The outer casing (9) is fixedly fitted with a mounting sleeve (17).

5. The weather-resistant, sealed, high-stability all-ground ignition coil according to claim 1, characterized in that: The lower end of the secondary frame (7) is equipped with a noise reduction resistor (3) and a copper sleeve (21). One end of the noise reduction resistor (3) is connected to the high voltage terminal block (20), and the other end of the noise reduction resistor (3) is connected to the upper end of the conductive spring (2). The copper sleeve (21) is fitted on the outside of the noise reduction resistor (3) and is interference-fitted to the secondary frame (7).

6. A weather-resistant, sealed, high-stability all-ground ignition coil according to claim 1 or 5, characterized in that: The diode (12) is a unidirectional diode.

Images