Ignition coil

Abstract

The ignition coil comprises a screw rod, an ignition rod is fixedly connected to the lower portion of the screw rod, a plurality of groove positions are formed in the side wall of the whole body of the ignition rod 2, the groove positions are evenly distributed in an array mode, a shell is arranged above the screw rod, a copper core is installed at the lower end of the shell, the copper core is fixedly connected with the screw rod, and the screw rod is fixedly connected with the shell. A dustproof cover is arranged between the copper core and the screw rod, and the dustproof cover is arranged outside the screw rod in a threaded and sleeving manner; a capacitor and a circuit board are installed in the shell, the capacitor is electrically connected with the copper core, the circuit board is electrically connected with the capacitor, a connector is installed outside the shell, three binding posts are fixedly installed in the connector, one end of each binding post penetrates through the shell and is electrically connected with the circuit board, and the other end of each binding post penetrates through the shell and is electrically connected with the circuit board. And a soft connecting plate is mounted on the joint. The utility model is suitable for the requirements of more vehicle types on the fixed position of the ignition coil, lossless butt joint, dust prevention and the length of the ignition rod.

Description

Technical Field

[0001] This utility model relates to the field of ignition coil technology, and in particular to an ignition coil. Background Technology

[0002] As automotive gasoline engines evolve towards higher speeds, higher compression ratios, higher power, lower fuel consumption, and lower emissions, traditional ignition systems are no longer adequate. The core components of an ignition system are the ignition coil and the switching device. Increasing the energy of the ignition coil allows the spark plug to generate a sufficiently powerful spark, a fundamental requirement for ignition systems to operate in modern engines. A typical ignition coil contains two coils: a primary coil and a secondary coil. The primary coil uses thicker enameled wire, typically 0.5-1 mm thick, wound with approximately 200-500 turns; the secondary coil uses thinner enameled wire, typically 0.1 mm thick, wound with approximately 15,000-25,000 turns. One end of the primary coil is connected to the vehicle's low-voltage power supply (+), and the other end is connected to the switching device (disconnector). One end of the secondary coil is connected to the primary coil, and the other end is connected to the high-voltage output terminal to output high-voltage electricity.

[0003] Traditional ignition coils have circular mounting holes, which limits their compatibility with a limited number of car models. Furthermore, the direct connection between the ignition coil and the car's plug makes the connector susceptible to damage from vibration, resulting in a poor connection. The dust cover for the ignition coil is in a fixed position, and different car models have varying dust protection requirements. Additionally, the fixed length of the ignition rod on traditional ignition coils further restricts their applicability. Moreover, after prolonged use, the spring tension in existing ignition coils weakens, reducing their shock absorption and cushioning effect.

[0004] Therefore, we propose an ignition coil to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to solve the problem of erosion and wear that traditional ignition coils in the prior art are prone to, and to propose an ignition coil.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] An ignition coil, characterized in that it comprises:

[0008] A screw, with an ignition rod fixedly connected to its lower part. The ignition rod has multiple slots on its sidewalls, which are evenly distributed in an array. A housing is provided on the upper part of the screw, and a copper core is installed at the lower end of the housing. The copper core is fixedly connected to the screw, and a dust cover is provided between the copper core and the screw. The dust cover is threaded onto the outside of the screw.

[0009] A capacitor and a circuit board are installed inside the housing. The capacitor is electrically connected to the copper core, and the circuit board is electrically connected to the capacitor. A connector is installed outside the housing. Three terminals are fixedly installed inside the connector. One end of each of the three terminals passes through the housing and is electrically connected to the circuit board. A flexible connector is installed on the connector. A mounting plate is fixedly connected outside the housing. The mounting plate has fixing holes.

[0010] The screw, ignition rod, and copper core are integrally formed. The screw, ignition rod, and copper core have cavities inside. A spring is installed inside the cavity. The spring is electrically connected to the copper core and the capacitor. The spring is made by gold plating. One end of the spring is pointed and the other end is flared.

[0011] Preferably, the helix angle of the screw is smaller than the equivalent friction angle of the screw pair.

[0012] Preferably, the terminal is made of copper and has insulating rubber around it.

[0013] Preferably, the spring is internally rotatably connected to a lead screw, the upper and lower threads of the lead screw have opposite helical directions, and two extrusion plates are threadedly connected to both the upper and lower threads of the lead screw.

[0014] Preferably, the two extrusion plates are inserted above and below the spring, respectively.

[0015] Preferably, the spring is further fixedly connected to two fixing rods, both of which pass through the two compression plates.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0017] 1. By setting the circular fixing hole to an elliptical shape, it is convenient to fix the ignition coil in more vehicle models. Moreover, by using a connecting wire, the plug and slot of the connecting wire can be connected to the ignition coil and the car plug respectively. When the vehicle is running, the vibration is buffered and discharged by the connecting wire, and no damage will occur. Thus, it is suitable for non-destructive docking of ignition coils in more vehicle models.

[0018] 2. By setting a dust cover, the dust cover can be stopped at any position on the screw through the thread, thus adapting to the dust protection needs of different vehicle models. By setting multiple slots on the ignition rod, the length of the ignition rod can be changed by cutting the slots, thus adapting to the length requirements of different vehicle models.

[0019] 3. By plating the spring with gold, the spring has better electrical conductivity. The spring with one pointed end and one flared end has better adaptability to spark plugs of different car models. At the same time, the two extrusion plates can be controlled to move closer to each other by the lead screw, so that after long-term use (the elastic coefficient k decreases) the length of the spring decreases (the elastic deformation x increases), thereby ensuring the elasticity of the spring and thus ensuring the shock absorption and buffering effect of the spring on the coil.

[0020] This invention is applicable to a wider range of vehicle models with requirements for fixing the ignition coil position, non-destructive connection, dust prevention, and ignition rod length. Attached Figure Description

[0021] Figure 1 This is a three-dimensional view of the structure of an ignition coil proposed in this utility model;

[0022] Figure 2 This is a bottom view of the structure of an ignition coil proposed in this utility model;

[0023] Figure 3 This is a bottom perspective view of the structure of an ignition coil proposed in this utility model;

[0024] Figure 4 This is a perspective view of the structure of a capacitor in an ignition coil according to the present invention.

[0025] Figure 5 This is a perspective view of the structure of a connector in an ignition coil according to the present invention;

[0026] Figure 6 This is a schematic diagram of the circuit board structure in an ignition coil according to the present invention;

[0027] Figure 7 This is a schematic diagram of the structure of a spring in an ignition coil according to the present invention;

[0028] Figure 8 This is a schematic diagram of the structure of a connecting line proposed in this utility model.

[0029] In the diagram: 1. Screw, 2. Ignition rod, 3. Copper core, 4. Housing, 41. Capacitor, 42. Circuit board, 43. Connector, 44. Terminal block, 45. Flexible connector, 46. Mounting plate, 47. Fixing hole, 5. Dust cover, 6. Spring, 61. Lead screw, 62. Extrusion plate, 63. Fixing rod, 7. Plug, 8. Connecting wire, 9. Slot. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0031] Reference Figure 1-7 An ignition coil, comprising:

[0032] The screw 1 has an ignition rod 2 fixedly connected to its lower part. Specifically, the ignition rod 2 has multiple slots on its side wall, which are evenly distributed in an array. The screw 1 has a housing 4 on its upper part, and a copper core 3 is installed at the lower end of the housing 4. The screw 1 and the ignition rod 2 are fixedly connected through the copper core 3. The copper core 3 is fixedly connected to the screw 1, and a dust cover 5 is provided between the copper core 3 and the screw 1. The dust cover 5 is threaded onto the outside of the screw 1.

[0033] The thread helix angle of the screw 1 is smaller than the equivalent friction angle of the screw pair, which enables the screw 1 to automatically lock after rotation.

[0034] In this invention, a capacitor 41 and a circuit board 42 are installed inside the outer casing 4. The capacitor 41 is electrically connected to the copper core 3, and the circuit board 42 is electrically connected to the capacitor 41. A connector 43 is installed outside the outer casing 4. Three terminals 44 are fixedly installed inside the connector 43. One end of each of the three terminals 44 passes through the outer casing 4 and is electrically connected to the circuit board 42. A flexible connector 45 is installed on the connector 43. A hanging plate 46 is fixedly connected to the outer casing 4. The hanging plate 46 is provided with a fixing hole 47.

[0035] The connector 43 is soldered onto the circuit board 42, and the three connectors 43 are respectively matched with two terminals 44.

[0036] The terminal 44 is made of copper and has insulating rubber around it, which saves costs while ensuring insulation.

[0037] It should be noted that the mounting hole 47 is elliptical. By making the mounting hole 47 elliptical, it is easier to fix the ignition coil in more vehicle models.

[0038] In addition, the screw 1, ignition rod 2 and copper core 3 are integrally formed. The screw 1, ignition rod 2 and copper core 3 are provided with cavities. Spring 6 is installed in the cavity. Spring 6 is electrically connected to copper core 3 and capacitor 41.

[0039] It should be noted that spring 6 is made by gold plating, and one end of spring 6 is pointed and the other end is flared.

[0040] In this invention, a lead screw 61 is rotatably connected inside the spring 6. The lead screw 61 can be driven by a micro motor. The spiral directions of the upper and lower threads of the lead screw 61 are opposite. Two extrusion plates 62 are threadedly connected to the upper and lower threads of the lead screw 61, respectively. The two extrusion plates 62 are inserted into the upper and lower parts of the spring 6. Through the lead screw 61, the two extrusion plates 62 can be driven to move closer to each other, so that the elastic coefficient k of the spring 6 decreases after long-term use, and the spring length decreases while the deformation x increases. Since the formula for calculating the elastic force of the spring 6 is F=-kx, it can be ensured that the elastic force of the spring 6 will not weaken, thus ensuring the shock absorption and buffering effect of the spring 6 on the coil.

[0041] It should be noted that two fixing rods 63 are also fixedly connected inside the spring 6. Both fixing rods 63 pass through the two extrusion plates 62. The fixing rods 63 can limit the two extrusion plates 62, so that they can only move closer or further apart from each other.

[0042] Reference Figure 8 A connecting cable includes a plug 7 that matches a connector 43, a connecting cable 8 connected to the plug 7, and a slot 9 fixedly connected to the end of the connecting cable 8 away from the plug 7. It should be noted that the connecting cable 8 is arranged in a spiral shape.

[0043] In this invention, by using a connecting wire 8, the plug 7 and slot 9 of the connecting wire 8 can be connected to the ignition coil and the car plug respectively. When the vehicle is in motion, its vibration is buffered and dissipated by the connecting wire 8, preventing damage. This makes it suitable for non-destructive docking of ignition coils for more vehicle models. By setting a dust cover 5, the dust cover 5 can be stopped at any position of the screw 1 through threads, thus meeting the dust protection requirements of different vehicle models. By setting multiple slots on the ignition rod 2, the length of the ignition rod 2 can be changed by cutting the slots, thus meeting the length requirements of different vehicle models. By gold-plating the spring 6, the spring 6 has better conductivity. The spring 6 with one pointed end and one flared end has better adaptability to spark plugs of different vehicle models.

[0044] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. An ignition coil, characterized in that, include: A screw (1) is fixedly connected to an ignition rod (2) at its lower part. The ignition rod (2) has multiple slots on its side wall, which are evenly distributed in an array. A shell (4) is provided above the screw (1). A copper core (3) is installed at the lower end of the shell (4). The copper core (3) is fixedly connected to the screw (1). A dust cover (5) is provided between the copper core (3) and the screw (1). The dust cover (5) is threaded onto the outside of the screw (1). A capacitor (41) and a circuit board (42) are installed inside the outer casing (4). The capacitor (41) is electrically connected to the copper core (3). The circuit board (42) is electrically connected to the capacitor (41). A connector (43) is installed outside the outer casing (4). Three terminals (44) are fixedly installed inside the connector (43). One end of each of the three terminals (44) passes through the outer casing (4) and is electrically connected to the circuit board (42). A flexible connector plate (45) is installed on the connector (43). A mounting plate (46) is fixedly connected to the outer casing (4). The mounting plate (46) has a fixing hole (47). The screw (1), ignition rod (2) and copper core (3) are integrally formed. The screw (1), ignition rod (2) and copper core (3) are provided with cavities. A spring (6) is installed in the cavity. The spring (6) is electrically connected to the copper core (3) and the capacitor (41). The spring (6) is made by gold plating. One end of the spring (6) is set in a pointed shape, and the other end is set in a trumpet shape.

2. An ignition coil according to claim 1, characterized in that, The thread helix angle of the screw (1) is less than the equivalent friction angle of the screw pair.

3. An ignition coil according to claim 1, characterized in that, The terminal (44) is made of copper and has insulating rubber on its periphery.

4. An ignition coil according to claim 1, characterized in that, The spring (6) is internally rotatably connected to a lead screw (61). The upper and lower threads of the lead screw (61) have opposite helical directions. Two extrusion plates (62) are threadedly connected to the upper and lower threads of the lead screw (61).

5. An ignition coil according to claim 4, characterized in that, The two extrusion plates (62) are respectively inserted above and below the spring (6).

6. An ignition coil according to claim 4, characterized in that, The spring (6) is also fixedly connected to two fixing rods (63), both of which pass through the two extrusion plates (62).

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