Anti-static pen type ignition coil

Abstract

The utility model discloses an anti-static pen type ignition coil which comprises an ignition coil shell, an annular conductive electrode, an elastic connecting piece, an arc-shaped conductive strip and a protruding contact, the annular conductive electrode is arranged in the ignition coil shell, and the annular conductive electrode is connected with the inner wall of the ignition coil shell through the elastic connecting piece; an arc-shaped conductive strip is arranged on the inner wall of the ignition coil shell, and a protruding contact in selective contact with the arc-shaped conductive strip is arranged on the outer surface of the annular conductive electrode. When the ignition coil shell is subjected to centrifugal force, the annular conductive electrode expands in the radial direction so that the protruding contact can make contact with the arc-shaped conductive strip to be conducted, the annular conductive electrode is installed in an annular cavity between the inner wall of the ignition coil shell and the inner coil, and the inner diameter of the annular conductive electrode is slightly larger than the outer diameter of the coil support. The anti-static fabric can play an anti-static role, and further avoids the situation of danger to a human body.

Description

Technical Field

[0001] This utility model relates to the technical field of ignition coils, and in particular to the technical field of anti-static pen-type ignition coils. Background Technology

[0002] Pencil ignition coils combine the high-voltage ignition wire and the ignition coil into one, reducing energy loss, improving combustion, and increasing fuel efficiency. Each cylinder is assigned its own ignition coil, which is directly mounted on top of the spark plug. This reduces electromagnetic radiation and improves the operational stability of onboard electronic devices. This ignition method achieves precise ignition through camshaft sensors and cylinder knock sensors. It is suitable for engines with any number of cylinders, and is particularly suitable for engines with four valves per cylinder.

[0003] For example, application number CN201620861468.4 discloses an ignition coil, including an inner core, a primary coil, a secondary coil, an outer core, and a housing. The housing is a sleeve structure with a hollow interlayer. The housing includes an inner wall, an outer wall, and a hollow interlayer formed between the inner wall and the outer wall. The bottom of the hollow interlayer is closed, and the top has an opening. The inner core is cylindrical. The primary coil and the secondary coil are wound around the outer periphery of the inner core and then installed in the inner wall of the housing. The outer core is a thin sleeve shape and is inserted between the hollow interlayers. A sealing ring is provided at the opening of the hollow interlayer to close the hollow interlayer. Epoxy resin is filled above the sealing ring. Due to the adoption of the above technical solutions, the ignition coil of this utility model can make the temperature and withstand voltage proportional, and eliminate the noise generated during operation.

[0004] For example, application number CN201620093134.7 discloses an ignition coil, including a housing, a plug, and a high-voltage terminal. The high-voltage terminal is connected to one side of the housing, and the plug is connected to the other side. The housing surface has a cable tray and includes several through holes for fixing the housing. These through holes are recessed into the housing surface. One through hole is located on the high-voltage terminal side and within the cable tray. The direction of this through hole is the same as the cable tray, cleverly integrating the space required for fixing into the housing. Furthermore, the cable tray provides a grip for the user. Given the complex wiring and varied environment inside vehicles, the cable tray makes it easy to place the ignition coil in the required position during installation. The indicator markings on the high-voltage terminal further optimize the installation process of this ignition coil, reminding the user of the cylinder number corresponding to the high-voltage terminal.

[0005] However, all of the above structures have the following drawbacks:

[0006] Because vibrations during vehicle operation or shaking can cause poor contact, high voltage can be generated at the moment of ignition. This high voltage can also generate static electricity, which can be dangerous to the human body. Therefore, the above-mentioned structure lacks anti-static components, which can easily lead to dangerous situations. Summary of the Invention

[0007] The purpose of this invention is to solve the problems in the existing technology by proposing an anti-static pen-type ignition coil, which can achieve the effect of preventing static electricity and thus avoid danger to the human body.

[0008] To achieve the above objectives, this utility model proposes an anti-static pen-type ignition coil, comprising an ignition coil housing, an annular conductive electrode, an elastic connector, an arc-shaped conductive strip, and raised contacts. The annular conductive electrode is provided inside the ignition coil housing and is connected to the inner wall of the ignition coil housing via the elastic connector. The arc-shaped conductive strip is provided on the inner wall of the ignition coil housing, and the outer surface of the annular conductive electrode is provided with raised contacts that selectively contact the arc-shaped conductive strip. When the ignition coil housing is subjected to centrifugal force, the annular conductive electrode expands radially, causing the raised contacts to contact and conduct electricity with the arc-shaped conductive strip.

[0009] Preferably, the annular conductive electrode is installed in the annular cavity between the inner wall of the ignition coil housing and the inner coil, and the inner diameter of the annular conductive electrode is slightly larger than the outer diameter of the coil support.

[0010] Preferably, the elastic connector is a spring sheet and there are several of them. The inner wall of the ignition coil housing has several slots corresponding to the elastic connector. One end of the elastic connector is fixed in the slot of the inner wall of the ignition coil housing, and the other end of the elastic connector is hinged to the outer edge of the annular conductive electrode.

[0011] Preferably, the arc-shaped conductive strip is located in the region corresponding to the rotation path of the annular conductive electrode on the inner wall of the ignition coil housing, and the arc-shaped conductive strip is connected to the grounding terminal of the ignition coil housing through metal rivets.

[0012] Preferably, the ignition coil housing has a wiring interface on its upper part, and the wiring interface has an annular conductive protrusion embedded in it.

[0013] Preferably, the surface of the ignition coil housing is provided with a spiral groove, and the inner wall of the spiral groove is provided with a conductor extending in the spiral direction, one end of which extends to the grounding terminal of the ignition coil housing.

[0014] The beneficial effects of this utility model are:

[0015] 1. This utility model achieves an anti-static effect through the combined action of an annular conductive electrode, an elastic connector, an arc-shaped conductive strip, and raised contacts. When the ignition coil runs with the engine, the ignition coil housing generates centrifugal force due to vibration. Under the action of centrifugal force, the annular conductive electrode overcomes the elastic force of the elastic connector and extends towards the inner wall of the ignition coil housing. The raised contacts of the annular conductive electrode contact the arc-shaped conductive strip on the inner wall of the ignition coil housing, forming a grounding path. Static charge is discharged along this path. When the ignition coil stops working, the centrifugal force disappears, and the elastic restoring force of the elastic connector pulls the annular conductive electrode back to its original position. The raised contacts separate from the arc-shaped conductive strip, avoiding the risk of short circuit due to accidental contact in non-working states. This achieves an anti-static effect, reduces the danger to the human body, and solves the problem that static electricity can be dangerous to the human body. Therefore, the above structure lacks anti-static components, which can easily lead to danger.

[0016] 2. By setting a spiral groove, this utility model can accelerate heat dissipation by utilizing airflow, while guiding static electricity out along the spiral direction through the curvature of the groove surface. By setting an annular conductive protrusion, it can form multi-point contact with the plug-in component, guiding the static electricity introduced from the outside to the ground of the ignition coil shell, and preventing backflow into the internal circuit. Attached Figure Description

[0017] Figure 1 This is the front view of the anti-static pen-type ignition coil of this utility model;

[0018] Figure 2 This is a cross-sectional view of the outer shell of the anti-static pen-type ignition coil of this utility model;

[0019] Figure 3 This is an enlarged schematic diagram of point A of the anti-static pen-type ignition coil of this utility model;

[0020] Figure 4 This is an enlarged schematic diagram of point B of the anti-static pen-type ignition coil of this utility model;

[0021] Figure 5 This is a schematic diagram of the internal circuit interface of the anti-static pen-type ignition coil of this utility model;

[0022] In the diagram: 1-Ignition coil housing, 101-Slot, 2-Annular conductive electrode, 21-Raised contact, 3-Elastic connector, 4-Arc-shaped conductive strip, 5-Line interface, 51-Annular conductive protrusion, 6-Spiral groove, 61-Conductor. Detailed Implementation

[0023] See Figures 1 to 5This utility model discloses an anti-static pen-type ignition coil, comprising an ignition coil housing 1, an annular conductive electrode 2, an elastic connector 3, an arc-shaped conductive strip 4, and raised contacts 21. The annular conductive electrode 2 is disposed inside the ignition coil housing 1 and is connected to the inner wall of the ignition coil housing 1 via the elastic connector 3. The arc-shaped conductive strip 4 is disposed on the inner wall of the ignition coil housing 1, and raised contacts 21 selectively contact the arc-shaped conductive strip 4 on the outer surface of the annular conductive electrode 2. When the ignition coil housing 1 is subjected to centrifugal force, the annular conductive electrode 2 expands radially, causing the raised contacts 21 to contact and conduct electricity with the arc-shaped conductive strip 4. When the ignition coil is running with the engine, the ignition coil housing 1 generates centrifugal force due to vibration. Under the action of centrifugal force, the annular conductive electrode 2 overcomes the elastic force of the elastic connector 3 and expands towards the inner wall of the ignition coil housing 1. The raised contacts 21 of the annular conductive electrode 2 contact the arc-shaped conductive strip 4 on the inner wall of the ignition coil housing 1, forming a grounding path, and static charge is discharged along this path.

[0024] See Figure 2 The annular conductive electrode 2 is installed in the annular cavity between the inner wall of the ignition coil housing 1 and the inner coil, and the inner diameter of the annular conductive electrode 2 is slightly larger than the outer diameter of the coil support, thereby ensuring that it can rotate freely without interfering with the operation of the coil.

[0025] See Figure 3 The elastic connector 3 is a spring sheet and there are several of them. The inner wall of the ignition coil housing 1 has several slots 101 corresponding to the elastic connector 3. One end of the elastic connector 3 is fixed in the slot 101 of the inner wall of the ignition coil housing 1, and the other end of the elastic connector 3 is hinged to the outer edge of the annular conductive electrode 2, thereby forming a radial elastic support, allowing the annular conductive electrode 2 to expand outward under the action of centrifugal force.

[0026] See Figure 4 The arc-shaped conductive strip 4 is located in the area on the inner wall of the ignition coil housing 1 corresponding to the rotation path of the annular conductive electrode 2. The arc-shaped conductive strip 4 is connected to the grounding end of the ignition coil housing 1 through metal rivets, so that when the protruding contact 21 of the annular conductive electrode 2 contacts the arc-shaped conductive strip 4 on the inner wall of the ignition coil housing 1, a grounding path is formed, and static charge is discharged along this path.

[0027] See Figure 5 The ignition coil housing 1 has a line interface 5 on its upper part. The line interface 5 has an annular conductive protrusion 51 embedded in it, which can form multi-point contact with the connector and guide the static electricity introduced from the outside to the ground of the ignition coil housing 1, so as to prevent backflow into the internal circuit.

[0028] See Figure 1The surface of the ignition coil housing 1 is provided with a spiral groove 6, and the inner wall of the spiral groove 6 is provided with a conductor 61 extending in the spiral direction. One end of the conductor 61 extends to the grounding end of the ignition coil housing 1, which can accelerate heat dissipation by utilizing air flow, while guiding static electricity to be discharged in the spiral direction through the curvature of the groove surface.

[0029] The working process of this utility model:

[0030] During operation, the anti-static pen-type ignition coil of this invention generates centrifugal force due to vibration of the ignition coil housing 1 as the ignition coil runs with the engine. Under the action of centrifugal force, the annular conductive electrode 2 overcomes the elastic force of the elastic connector 3 and extends towards the inner wall of the ignition coil housing 1. The protruding contact 21 of the annular conductive electrode 2 contacts the arc-shaped conductive strip 4 on the inner wall of the ignition coil housing 1, forming a grounding path. Static charge is discharged along this path. When the ignition coil stops working, the centrifugal force disappears, and the elastic restoring force of the elastic connector 3 pulls the annular conductive electrode 2 back to its original position, separating the protruding contact 21 from the arc-shaped conductive strip 4. This avoids the risk of short circuit caused by accidental contact when not in operation, thus achieving the effect of anti-static and reducing the danger to the human body.

[0031] The control method of this utility model is to control the device by manually starting and stopping the switch. The wiring diagram of the power element and the supply of power are common knowledge in the field. Since this utility model is mainly used to protect mechanical devices, the control method and wiring layout will not be explained in detail.

[0032] The above embodiments are illustrative of the present invention and are not intended to limit the present invention. Any simple modifications to the present invention are within the protection scope of the present invention.

Claims

1. An anti-static pencil coil, characterized by: The device includes an ignition coil housing (1), an annular conductive electrode (2), an elastic connector (3), an arc-shaped conductive strip (4), and raised contacts (21). The ignition coil housing (1) is provided with an annular conductive electrode (2), which is connected to the inner wall of the ignition coil housing (1) through the elastic connector (3). The inner wall of the ignition coil housing (1) is provided with an arc-shaped conductive strip (4), and the outer surface of the annular conductive electrode (2) is provided with raised contacts (21) that selectively contact the arc-shaped conductive strip (4). When the ignition coil housing (1) is subjected to centrifugal force, the annular conductive electrode (2) expands radially to make the raised contacts (21) contact and conduct with the arc-shaped conductive strip (4).

2. The anti-static pencil ignition coil of claim 1, wherein: The annular conductive electrode (2) is installed in the annular cavity between the inner wall of the ignition coil housing (1) and the inner coil, and the inner diameter of the annular conductive electrode (2) is slightly larger than the outer diameter of the coil support.

3. The anti-static pencil coil of claim 1, wherein: The elastic connector (3) is a spring sheet and there are several of them. The inner wall of the ignition coil housing (1) is provided with several slots (101) corresponding to the elastic connector (3). One end of the elastic connector (3) is fixed in the slot (101) of the inner wall of the ignition coil housing (1), and the other end of the elastic connector (3) is hinged to the outer edge of the annular conductive electrode (2).

4. The anti-static pencil ignition coil of claim 1, wherein: The arc-shaped conductive strip (4) is located in the area of ​​the inner wall of the ignition coil housing (1) corresponding to the rotation path of the annular conductive electrode (2). The arc-shaped conductive strip (4) is connected to the grounding end of the ignition coil housing (1) through metal rivets.

5. The anti-static pencil ignition coil of claim 1, wherein: The ignition coil housing (1) is provided with a line interface (5) on the top, and an annular conductive protrusion (51) is embedded in the line interface (5).

6. The anti-static pencil ignition coil of claim 1, wherein: The surface of the ignition coil housing (1) is provided with a spiral groove (6), and the inner wall of the spiral groove (6) is provided with a conductor (61) extending in the spiral direction. One end of the conductor (61) extends to the grounding end of the ignition coil housing (1).

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