A high energy ignition coil

Abstract

The utility model belongs to the technical field of ignition coil, especially is concerned to high energy ignition coil. The ignition coil clever structure, energy value is high, contact is stable, and work performance is good. The iron core of this ignition coil is inserted in the hollow cavity in the center of primary assembly, the secondary assembly is set in the outside of primary assembly, the iron core, primary assembly and secondary assembly are inserted in the shell, the installation gap in the shell is filled with epoxy resin package, the socket assembly is clamped on the side wall of the shell, the primary assembly and secondary assembly are connected with the socket assembly, the high pressure spring is fixed on the secondary assembly, the high pressure rod is fixedly connected in the lower end of the shell, the conductive spring is inserted in the high pressure rod, and the conductive spring and high pressure spring indirectly set up the noise reduction resistance. The ignition coil designs closed magnetic circuit, and the magnetic resistance is low, and the energy loss is low, and the conversion rate is high, and the cross section area coil turns of the iron core and the magnetic conductor are changed in cooperation, realize high energy ignition, change the shell structure, and reduce the assembly difficulty.

Description

Technical Field

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

[0002] Traditional ignition coils are low-energy ignition coils. By changing the number of turns of the primary and secondary enameled wires, ignition coils with different energies can be obtained. As the number of turns of the coil changes, the overall size of the ignition coil will change, affecting the spatial layout of the application environment. At the same time, if you want to achieve a high-energy ignition coil, this method alone cannot fully achieve it and the stability is weak. Summary of the Invention

[0003] To address the problems existing in the background technology, this utility model provides a high-energy ignition coil with ingenious structure, high energy value, stable contact, and good working performance.

[0004] The technical solution adopted by this utility model to solve its technical problem is as follows: a high-energy ignition coil, including a high-voltage rod, a conductive spring, a noise-reducing resistor, a shell, an iron core, a high-voltage spring, a socket assembly, a primary assembly, and a secondary assembly. The iron core is inserted into the hollow cavity in the center of the primary assembly, and the secondary assembly is sleeved on the outside of the primary assembly. The iron core, the primary assembly, and the secondary assembly are all inserted into the shell. The installation gap in the shell is filled with epoxy resin for encapsulation. The socket assembly is snapped onto the side wall of the shell. The primary assembly and the secondary assembly are both wired and connected to the socket assembly. A high-voltage spring is fixedly installed on the secondary assembly. The high-voltage rod is fixedly connected to the lower end of the shell. The conductive spring is inserted into the high-voltage rod. A noise-reducing resistor is connected in communication between the conductive spring and the high-voltage spring.

[0005] The socket assembly includes a plug shell, socket terminals, an ignition control module, a first terminal, and a diode. A slot is formed on the side wall of the shell, and the plug shell is fixedly installed in the slot. Multiple socket terminals are arranged in the plug shell. The ignition control module is arranged in the shell and connected to the multiple socket terminals. The first terminal is connected to the ignition control module and connected to the primary component. The diode is connected to the ignition control module and connected to the secondary component.

[0006] The primary component includes a primary frame, a primary enameled wire, and two primary connecting pieces. The primary frame has an axially arranged through slot, and the iron core is inserted into the through slot. The two primary connecting pieces are fixedly arranged at the end of the primary frame facing the socket assembly. The primary enameled wire is tightly wound on the primary frame, and both ends of the primary enameled wire are fixedly connected to the two primary connecting pieces respectively. A wire laying groove is provided on the primary frame, and one end of the primary enameled wire is smoothly laid in the wire laying groove.

[0007] The secondary assembly comprises a secondary framework, a secondary low-voltage connecting lug, a secondary enameled wire, a secondary connecting lug and a secondary high-voltage connecting lug. A hollow channel is axially arranged on the secondary framework, the primary assembly is inserted through the hollow channel, the secondary enameled wire is wound on the outer wall of the secondary framework, the secondary low-voltage connecting lug is fixedly arranged at an end of the secondary framework facing the socket assembly, the secondary low-voltage connecting lug is communicated with the secondary enameled wire, the secondary connecting lug is fixedly arranged at an end of the secondary framework away from the socket assembly, the secondary connecting lug is communicated with the secondary enameled wire, the secondary high-voltage connecting lug is fixedly arranged on the secondary framework and faces a high-voltage rod, one end of the secondary high-voltage connecting lug is communicated with the secondary connecting lug, the other end of the secondary high-voltage connecting lug is fixedly connected with a high-voltage spring, and the high-voltage spring is coaxially arranged with the high-voltage rod.

[0008] A plurality of cooling fins are arranged on the outer wall of the secondary framework, the secondary enameled wire is wound in grooves between the plurality of cooling fins, a wire passing groove is formed on each cooling fin, the secondary enameled wire transitions from one groove to an adjacent adjacent groove through the wire passing groove, and the wire passing grooves on adjacent cooling fins are arranged in a staggered manner.

[0009] The high-energy ignition coil further comprises a permanent magnet and two magnetic conductors, both of the two magnetic conductors are C-shaped, the two magnetic conductors are inserted into a gap between the secondary assembly and a housing, open ends of the two magnetic conductors face each other and are buckled against each other, the two magnetic conductors and an iron core jointly form a Japanese-shaped closed magnetic circuit, and the permanent magnet is padded at an end face of one end of the iron core abutting against the magnetic conductors.

[0010] A plurality of spacers are arranged in the housing, the plurality of spacers are arranged around an outer contour of the secondary assembly, the two magnetic conductors are inserted between the spacers and a side wall of the housing, a buckle is protrudingly arranged on a vertical surface of the spacer facing the side wall of the housing, a spacing between the buckle and an inner bottom of the housing is equal to a thickness of the magnetic conductor, and a plurality of limiting reinforcing ribs are protrudingly arranged on an inner side wall of the housing.

[0011] A mounting seat is arranged on an outer side of the housing, a through mounting hole is formed on the mounting seat, and a mounting sleeve is inserted into the mounting hole.

[0012] Protruding sections are arranged at axial edges of two ends of the primary framework, the protruding sections are erected on the magnetic conductors, and a support block for supporting the secondary framework is protrudingly arranged on an outer wall of the primary framework.

[0013] Beneficial effects of the present utility model: the ignition coil adopts the silicon steel material with lower iron loss and better magnetic performance for the iron core and the magnetic conductors, increases the cross-sectional area of the iron core and the magnetic conductors at the same time, designs the magnetic circuit formed by the iron core, the magnetic conductors and the permanent magnet into a Japanese-shaped closed magnetic circuit, which reduces magnetic resistance and energy loss, and improves conversion efficiency. Finally, by adjusting the number of turns of the primary enameled wire and the secondary enameled wire, a high-energy ignition coil is realized.

[0014] This ignition coil incorporates a high-voltage spring, which serves as a transition connection between the secondary high-voltage terminals and the noise-reducing resistor. This improves upon the previous issue of poor contact between the secondary components of the ignition coil and the noise-reducing resistor, thus stabilizing the coil's performance. Simultaneously, the high-voltage spring facilitates the assembly and connection between the noise-reducing resistor and the secondary components, reducing assembly difficulty and improving efficiency. A weight-reducing notch on the high-voltage rod facilitates product identification while also reducing the overall weight. Attached Figure Description

[0015] In the attached diagram: Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a cross-sectional view of the structure of this utility model; Figure 3 This is a schematic diagram of the secondary skeleton structure of this utility model; Figure 4 This is a schematic diagram of the internal structure of the outer shell of this utility model; Figure 5 This is a schematic diagram of the primary skeleton structure of this utility model; Figure 6 This is a schematic diagram showing the relationship between the iron core, the magnetic conductor, and the permanent magnet of this utility model; Figure 7 This is a schematic diagram of the high-pressure rod structure of this utility model; In the diagram: 1. High-voltage rod; 2. Conductive spring; 3. Noise reduction resistor; 4. Housing; 5. Iron core; 6. Secondary frame; 7. Primary frame; 8. Magnetic conductor; 9. Permanent magnet; 10. Plug-in shell; 11. Socket connector; 12. Ignition control module; 13. First connector; 14. Diode; 15. Primary connector; 16. Secondary low-voltage connector; 17. Mounting sleeve; 18. Epoxy resin; 19. Secondary enameled wire; 20. Primary enameled wire; 21. Secondary connector; 22. Secondary high-voltage connector; 23. High-voltage spring; 24. Clip; 25. Spacer; 26. Limiting reinforcing rib; 27. Cable tray; 28. Fin; 29. ​​Cable guide. Detailed Implementation

[0016] The present invention will now be described in further detail with reference to the accompanying drawings. The drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention, and therefore only show the components relevant to the present invention.

[0017] A high-energy ignition coil includes a high-voltage rod 1, a conductive spring 2, a noise-reducing resistor 3, a housing 4, an iron core 5, a high-voltage spring 23, a socket assembly, a primary assembly, and a secondary assembly. The iron core 5 is inserted into the hollow cavity in the center of the primary assembly, and the secondary assembly is sleeved on the outside of the primary assembly. The iron core 5, the primary assembly, and the secondary assembly are all inserted into the housing 4. The installation gap in the housing 4 is filled with epoxy resin 18 for encapsulation. The socket assembly is snapped onto the side wall of the housing 4. The primary assembly and the secondary assembly are both wired and connected to the socket assembly. The high-voltage spring 23 is fixedly installed on the secondary assembly. The high-voltage rod 1 is fixedly connected to the lower end of the housing 4. The conductive spring 2 is inserted into the high-voltage rod 1. The noise-reducing resistor 3 is connected in communication between the conductive spring 2 and the high-voltage spring 23.

[0018] The socket assembly includes a plug housing 10, socket connectors 11, an ignition control module 12, a first connector 13, and a diode 14. A slot is provided on the side wall of the housing 4, and the plug housing 10 is fixedly installed in the slot. Multiple socket connectors 11 are provided in the plug housing 10. The ignition control module 12 is located in the housing 4 and is connected to the multiple socket connectors 11. The first connector 13 is connected to the ignition control module 12 and is connected to the primary component. The diode 14 is connected to the ignition control module 12 and is connected to the secondary component.

[0019] The socket connector 11, the first connector 13, and the diode 14 are all fixedly connected to the ignition control module 12 by soldering.

[0020] The primary assembly includes a primary frame 7, a primary enameled wire 20, and two primary connecting pieces 15. The primary frame 7 has an axially arranged through groove, and the iron core 5 is inserted into the through groove. The two primary connecting pieces 15 are fixedly arranged at the end of the primary frame 7 facing the socket assembly. The primary enameled wire 20 is tightly wound on the primary frame 7, and both ends of the primary enameled wire 20 are fixedly connected to the two primary connecting pieces 15 respectively. The primary frame 7 is provided with a wire laying groove 27, and one end of the primary enameled wire 20 is smoothly laid in the wire laying groove 17. The setting of the wire laying groove 27 ensures that one end of the primary enameled wire 20 is embedded in the wire laying groove 27 when winding, so that the remaining primary enameled wire 20 can form a smooth outer surface when winding.

[0021] The secondary assembly comprises a secondary bobbin 6, a secondary low-voltage terminal 16, a secondary enameled wire 19, a secondary terminal 21 and a secondary high-voltage terminal 22. The secondary bobbin 6 is axially provided with a hollow channel, through which the primary assembly is inserted. The secondary enameled wire 19 is wound on the outer wall of the secondary bobbin 6. Said secondary low-voltage terminal 16 is fixedly arranged at one end of the secondary bobbin 6 facing the socket assembly, and is connected to the secondary enameled wire 19. The secondary terminal 21 is fixedly arranged at one end of the secondary bobbin 6 away from the socket assembly, and is connected to the secondary enameled wire 19. The secondary high-voltage terminal 22 is fixedly arranged on the secondary bobbin 6 and faces the high-voltage rod 1. One end of the secondary high-voltage terminal 22 is connected to the secondary terminal 21, and the other end is fixedly connected with a high-voltage spring 23. The high-voltage spring 23 is arranged coaxially with the high-voltage rod 1. A clamping claw is arranged on the secondary high-voltage terminal 22, and the high-voltage spring 23 is clamped on the clamping claw. When the noise reduction resistor 3 is inserted into the housing 4, the end of the noise reduction resistor 3 pushes against the high-voltage spring 23, and an interference fit is formed between the noise reduction resistor 3 and the housing 4.

[0022] A plurality of fins 28 are arranged on the outer wall of the secondary bobbin 6, and the secondary enameled wire 19 is wound in grooves between the plurality of fins 28. A wire passing groove 29 is formed on each fin 28, and the secondary enameled wire 19 transitions from one groove to an adjacent adjacent groove through the wire passing groove 29. The wire passing grooves 29 on adjacent fins 28 are arranged in a staggered manner, and the staggered arrangement of the wire passing grooves 29 can reduce wrinkles generated when the secondary enameled wire 19 smoothly transitions to the adjacent groove.

[0023] The high-energy ignition coil further comprises a permanent magnet 9 and two magnetically conductive bodies 8. Both of the two magnetically conductive bodies 8 are C-shaped, and the two magnetically conductive bodies 8 are inserted into a gap between the secondary assembly and the housing 4. The open ends of the two magnetically conductive bodies 8 face each other and abut against each other to be buckled, and the two magnetically conductive bodies 8 and an iron core 5 together form a Japanese-shaped closed magnetic circuit. The Japanese-shaped closed magnetic circuit reduces magnetic resistance and energy loss, and improves conversion efficiency. The permanent magnet 9 is padded at the end face of one end of the iron core 5 that abuts against the magnetically conductive body 8.

[0024] A plurality of spacer pieces 25 are arranged in the housing 4, the plurality of spacer pieces 25 are arranged around the outer contour of the secondary assembly, and the two magnetically conductive bodies 8 are inserted between the spacer pieces 25 and the side wall of the housing 4. A buckle 24 is protrudingly arranged on the vertical surface of the spacer piece 25 facing the side wall of the housing 4, and a spacing between the buckle 24 and the inner bottom of the housing 4 is equal to the thickness of the magnetically conductive body 8. When the magnetically conductive body 8 is inserted into the housing 4, the buckle 24 limits the magnetically conductive body 8 in the insertion direction. A plurality of limiting reinforcing ribs 26 are protrudingly arranged on the inner side wall of the housing 4, and the limiting reinforcing ribs 26 abut and limit the magnetically conductive body 8.

[0025] A mounting seat is arranged on the outer side of the housing 4, a through mounting hole is formed on the mounting seat, and a mounting sleeve 17 is inserted into the mounting hole.

[0026] Protruding sections are provided at the upper edges of both ends of the axis of said primary bobbin 7, the protruding sections are erected on the magnetically conductive body 8, the magnetically conductive body 8 supports the primary bobbin 7 and keeps it suspended, a support block for supporting the secondary bobbin 6 is protruding provided on the outer wall of the primary bobbin 7, when the secondary bobbin 6 is sleeved on the primary assembly, the support block abuts against and supports the secondary bobbin 6 to keep its position stable, and keeps the secondary bobbin 6 and the primary bobbin 7 coaxial.

[0027] Silicon steel material is used and the cross-sectional dimensions of the iron core 5 and the magnetically conductive body 8 are increased, the closed magnetic circuit in a shape of Chinese character "日" is relied on, and in addition, the number of turns of the primary enameled wire 20 and the secondary enameled wire 19 is changed, so as to achieve the purpose of increasing the energy value of the ignition coil.

[0028] A plurality of weight-reducing notches are provided on the outer wall of said high-voltage rod 1. To ensure that the existing ignition coil can be replaced universally, the existing ignition coils are basically kept consistent in appearance and size, and the consistent appearance makes it difficult to distinguish and identify ignition coils of various specifications and models. The weight-reducing notches provided on the high-voltage rod 1 of the ignition coil make the ignition coil have intuitive differences in appearance from other models, which is convenient for identification and access. Meanwhile, the arrangement of the weight-reducing notches reduces the structural mass and the overall weight of the ignition coil while meeting the structural strength requirements.

[0029] When assembling the ignition coil, the socket assembly, the primary assembly and the secondary assembly are assembled respectively, then the secondary assembly is sleeved outside the primary assembly, two magnetically conductive bodies 8 are inserted into the housing 4, the permanent magnet 9 is arranged on one end of the iron core 5, the iron core 5 is inserted into the primary assembly, the matched iron core 5, primary assembly and secondary assembly are inserted into the housing 4, then the socket assembly is clamped on the housing 4, so that the first connecting sheet 13 is stably lapped with the primary connecting sheet 15, and the diode 14 is stably lapped with the secondary low-voltage connecting sheet 16, the noise reducing resistor 3 is inserted into the housing 4, so that the noise reducing resistor 3 is stably connected with the high-voltage spring 23, then epoxy resin 18 is filled into the housing 4 to fill gaps, completing sealing and insulating coating. During sealing, it is ensured that the noise reducing resistor 3 keeps its position stable after sealing, and meanwhile, one end of the noise reducing resistor 3 matching with the conductive spring 2 is kept exposed. A tube shell is arranged at the lower part of the housing 4, the noise reducing resistor 3 is inserted into the tube shell through interference fit. When an original ignition coil is assembled, the noise reducing resistor 3 is installed from the chamber of the housing 4, while the noise reducing resistor 3 of the ignition coil is independently inserted from the outside of the housing 4, so that the assembly steps are simplified, the assembly difficulty is reduced, and the assembly efficiency is improved.

[0030] The conductive spring 2 is installed in the high-voltage rod 1, and then the high-voltage rod 1 is fixedly connected to the housing 4, at this time, the high-voltage spring 23 and the conductive spring 2 stably clamp the noise reducing resistor 3. A spark plug is arranged at an end of the high-voltage rod 1 away from the housing 4, When the ignition coil is working, the power supply is supplied to the ignition coil through the socket assembly. At this time, current flows into the primary assembly, and the induced magnetic field in the iron core 5 increases. At this time, a reverse current is induced in the secondary enameled wire 19. After the primary enameled wire 20 is de-energized, the induced magnetic field in the iron core 5 decays rapidly, and a positive high voltage is induced in the secondary enameled wire 19. Due to the unidirectional conduction of the diode, only the induced high voltage generated when the power is off can pass through the secondary high voltage terminal 22, through the noise reduction resistor 3 and the conductive spring 2, and break down the spark plug to achieve ignition.

[0031] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A high-energy ignition coil, characterized in that: The device includes a high-voltage rod (1), a conductive spring (2), a noise-reducing resistor (3), a housing (4), an iron core (5), a high-voltage spring (23), a socket assembly, a primary assembly, and a secondary assembly. The iron core (5) is inserted into the hollow cavity in the center of the primary assembly. The secondary assembly is fitted outside the primary assembly. The iron core (5), the primary assembly, and the secondary assembly are all inserted into the housing (4). The installation gap in the housing (4) is filled with epoxy resin (18) for encapsulation. The socket assembly is snapped onto the side wall of the housing (4). The primary assembly and the secondary assembly are connected to the socket assembly. The high-voltage spring (23) is fixedly installed on the secondary assembly. The high-voltage rod (1) is fixedly connected to the lower end of the housing (4). The conductive spring (2) is inserted into the high-voltage rod (1). The noise-reducing resistor (3) is connected between the conductive spring (2) and the high-voltage spring (23).

2. The high-energy ignition coil according to claim 1, characterized in that: The socket assembly includes a plug shell (10), a socket connector (11), an ignition control module (12), a first connector (13), and a diode (14). A slot is provided on the side wall of the outer shell (4), and the plug shell (10) is fixedly installed in the slot. Multiple socket connectors (11) are provided in the plug shell (10). The ignition control module (12) is located in the outer shell (4) and connected to the multiple socket connectors (11). The first connector (13) is connected to the ignition control module (12) and is connected to the primary component. The diode (14) is connected to the ignition control module (12) and is connected to the secondary component.

3. A high-energy ignition coil according to claim 2, characterized in that: The primary component includes a primary frame (7), a primary enameled wire (20), and two primary connecting pieces (15). The primary frame (7) has an axial through groove, and the iron core (5) is inserted into the through groove. The two primary connecting pieces (15) are fixedly set at one end of the primary frame (7) facing the socket component. The primary enameled wire (20) is tightly wound on the primary frame (7). The two ends of the primary enameled wire (20) are fixedly connected to the two primary connecting pieces (15) respectively. A wire laying groove (27) is set on the primary frame (7), and one end of the primary enameled wire (20) is smoothly laid in the wire laying groove (27).

4. A high-energy ignition coil according to claim 3, characterized in that: The secondary assembly includes a secondary bobbin (6), a secondary low-voltage terminal lug (16), a secondary enameled wire (19), a secondary terminal lug (21) and a secondary high-voltage terminal lug (22). The secondary bobbin (6) is axially provided with a hollow channel, and the primary assembly is inserted through the hollow channel. The secondary enameled wire (19) is wound on the outer wall of the secondary bobbin (6). The secondary low-voltage terminal lug (16) is fixedly arranged at one end of the secondary bobbin (6) facing the socket assembly, and is in electrical communication with the secondary enameled wire (19). The secondary terminal lug (21) is fixedly arranged at one end of the secondary bobbin (6) away from the socket assembly, and is in electrical communication with the secondary enameled wire (19). The secondary high-voltage terminal lug (22) is fixedly arranged on the secondary bobbin (6) and faces the high-voltage rod (1); one end of the secondary high-voltage terminal lug (22) is in electrical communication with the secondary terminal lug (21), and the other end is fixedly connected with a high-voltage spring (23), wherein the high-voltage spring (23) is arranged coaxially with the high-voltage rod (1).

5. A high-energy ignition coil according to claim 4, characterized in that: A plurality of fins (28) are arranged on the outer wall of the secondary bobbin (6), the secondary enameled wire (19) is wound in grooves between the plurality of fins (28), each fin (28) is provided with a wire passing groove (29), the secondary enameled wire (19) transits from one groove to an adjacent adjacent groove through the wire passing groove (29), and the wire passing grooves (29) on adjacent fins (28) are arranged in a staggered manner.

6. A high-energy ignition coil according to claim 5, characterized in that: The high-energy ignition coil further comprises a permanent magnet (9) and two magnetically conductive bodies (8), both of the two magnetically conductive bodies (8) are C-shaped, the two magnetically conductive bodies (8) are inserted into the gap between the secondary assembly and the outer housing (4), the open ends of the two magnetically conductive bodies (8) face each other and abut and are buckled together, the two magnetically conductive bodies (8) and the iron core (5) together form a Japanese-shaped closed magnetic circuit, and the permanent magnet (9) is padded at the end face where one end of the iron core (5) abuts against the magnetically conductive bodies (8).

7. A high-energy ignition coil according to claim 6, characterized in that: A plurality of spacing plates (25) are arranged in the outer housing (4), the plurality of spacing plates (25) are arranged around the outer contour of the secondary assembly, the two magnetically conductive bodies (8) are inserted between the spacing plates (25) and the side wall of the outer housing (4), a buckle (24) is protrudingly arranged on the vertical face of the spacing plate (25) facing the side wall of the outer housing (4), the distance between the buckle (24) and the inner bottom of the outer housing (4) is set equal to the thickness of the magnetically conductive body (8), and a plurality of limiting reinforcing ribs (26) are protrudingly arranged on the inner side wall of the outer housing (4).

8. A high-energy ignition coil according to claim 7, characterized in that: A mounting seat is arranged outside the outer housing (4), a through mounting hole is opened on the mounting seat, and a mounting sleeve (17) is inserted into the mounting hole.

9. A high-energy ignition coil according to claim 8, characterized in that: Protruding sections are arranged at the axial upper edges of both ends of the primary bobbin (7), the protruding sections are erected on the magnetically conductive bodies (8), and a support block for supporting the secondary bobbin (6) is protrudingly arranged on the outer wall of the primary bobbin (7).

10. A high-energy ignition coil according to claim 9, characterized in that: The iron core (5) and the magnetically conductive bodies (8) are made of silicon steel material, and a plurality of weight-reducing notches are arranged on the outer wall of the high-voltage rod (1).

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