Anti-vibration connecting structure of ignition coil

Abstract

The utility model relates to an ignition coil structure. An anti-vibration connecting structure of an ignition coil comprises a high-voltage connecting rod of the ignition coil, the high-voltage connecting rod is located in a mounting hole of an engine body, one end of the high-voltage connecting rod is connected with an ignition coil body, the other end of the high-voltage connecting rod is connected with a spark plug, and an elastic anti-vibration protruding block is arranged on the outer circumferential surface of the high-voltage connecting rod. And the outer circumferential surface formed by the anti-vibration bumps is in interference fit with the mounting hole. The anti-vibration connecting structure of the ignition coil is good in anti-vibration effect, stable in structure and long in service life, and the spark plug and the high-voltage connecting rod cannot be abraded. The technical problems that in the prior art, a high-voltage connecting rod vibrates in a mounting hole of an engine body, the contact face of a compression spring and a spark plug is prone to abrasion, and the stability and the service life of an ignition coil structure are affected are solved.

Description

Technical Field

[0001] The utility model relates to an ignition coil structure, in particular to an anti-vibration connection structure when the ignition coil is assembled with an engine. Background Art

[0002] The advantages of automobile turbocharged engines are as follows: 1. Improve fuel economy and reduce exhaust emissions; 2. Small displacement and high power, able to provide continuous power; 3. Power output response lags, and smoothness needs to be improved. Turbocharged engines have been more widely used in recent years. Turbocharged engines have higher requirements for the vibration of ignition coils. The ignition coils currently used in the market are mostly improved by increasing the wall thickness of the high-voltage connecting rod assembled on the ignition coil body and adding multiple long reinforcing ribs to improve the anti-vibration ability. The assembly space requirements of the ignition coil are larger and the cost will be higher, and the anti-vibration is still unreliable. Because the high-voltage connecting rod and the outer circle of the spark plug are radially interfered with to achieve high-voltage protection, in order to ensure that the high-voltage connecting rod and the spark plug are assembled in place without too much assembly force, there is a large gap between the high-voltage connecting rod and the engine cylinder block, and the high-voltage connecting rod material is relatively soft rubber. During the operation of the engine, due to excessive vibration of the high-voltage connecting rod, the compression spring and the spark plug installed on the high-voltage connecting rod move relative to each other, and the contact surface is worn. Summary of the invention

[0003] The utility model provides an anti-vibration connection structure of an ignition coil with good anti-vibration effect, no wear of the spark plug and the compression spring, stable structure and long service life; it solves the technical problems existing in the prior art that the high-voltage connecting rod vibrates in the mounting hole of the engine body, the contact surface of the compression spring and the spark plug is easily worn, and the stability and service life of the ignition coil structure are affected.

[0004] The above technical problems of the utility model are solved by the following technical solutions: an anti-vibration connection structure of an ignition coil, including a high-voltage connecting rod of the ignition coil, the high-voltage connecting rod is located in the mounting hole of the engine body, one end of the high-voltage connecting rod is connected to the ignition coil body, the other end of the high-voltage connecting rod is connected to the spark plug, and elastic anti-vibration protrusions are arranged on the outer circumferential surface of the high-voltage connecting rod, and the outer circumferential surface formed by the anti-vibration protrusions is interference fit with the mounting hole. The high-voltage connecting rod is added with an anti-vibration protrusion design for interference assembly, and is assembled with the ignition coil body after the compression spring is installed. The ignition coil is installed on the engine, and finally locked and pressed together with the engine cylinder body with bolts. The anti-vibration protrusion on the high-voltage connecting rod is interference fit with the circular side surface of the engine cylinder body, so as to meet the overall anti-vibration requirements of the engine. The problem of wear of the spark plug and the compression spring is reduced, thereby improving the stability and service life of the structure. The anti-vibration bumps are made of soft rubber, which can simplify the assembly process when assembled with the mounting holes. At the same time, because they are arranged one by one, they are point-matched with the mounting holes of the engine body, which reduces the assembly resistance but ensures the anti-vibration effect.

[0005] Preferably, the anti-vibration bumps are evenly distributed on the outer circumferential surface of the high-voltage connecting rod. The evenly distributed anti-vibration bumps are easy to shape and reduce costs.

[0006] Preferably, the anti-vibration protrusion includes a guide surface, the guide surface is located at the lower side of the anti-vibration protrusion, and the upper edge of the mounting hole of the engine body is provided with an inclined surface that matches the guide surface. The guide surface and the inclined surface are designed to better align the position during assembly, so that the high-voltage connecting rod can be inserted into the hole of the engine body more conveniently, thereby improving assembly efficiency, reducing assembly difficulty, and meeting assembly force requirements.

[0007] Preferably, the anti-vibration bump includes a bump body, and the bump body is connected to the outer surface of the high-voltage connecting rod through an arc surface transition. The arc surface connection improves the vibration capacity and increases the connection strength.

[0008] Preferably, the anti-vibration bump includes a bump body, and a groove is formed on the upper surface of the bump body. The upper surface of the bump body is further divided into two contact surfaces, and the two contact surfaces can be squeezed and deformed by the groove during assembly, which is convenient for assembly. At the same time, the contact surface between the anti-vibration bump and the inner wall of the mounting hole is smaller, which is easier to assemble.

[0009] Preferably, a compression spring is provided at one end of the high-voltage connecting rod that is connected to the spark plug, and the high-voltage connecting rod and the spark plug are interference fit.

[0010] Preferably, the high-voltage connecting rod and the anti-vibration protrusion are integrally formed, and the high-voltage connecting rod and the anti-vibration protrusion are made of rubber material.

[0011] Therefore, the anti-vibration connection structure of an ignition coil of the utility model has the following advantages: by forming an anti-vibration convex block on the outer circumferential surface of the high-voltage connecting rod, the anti-vibration ability is improved, the anti-vibration ability is strong, and the use performance and life of the product are improved. It is difficult to meet the design requirements before optimization, and the experiment reaches more than twice the design requirements after optimization. The original structure of increasing the wall thickness of the high-voltage connecting rod is cancelled, making the product lighter, lower in cost, and achieving higher anti-vibration ability. The upper surface of the anti-vibration convex block is further reduced in contact area through the design of the groove, which is convenient for assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 The invention discloses an exploded perspective view of an anti-vibration connection structure of an ignition coil.

[0013] Figure 2 yes Figure 1 sectional view of .

[0014] Figure 3 yes Figure 1 Enlarged view of point A.

[0015] Figure 4 This is an enlarged view of point A in Example 2. DETAILED DESCRIPTION

[0016] The technical solution of the utility model is further specifically described below through embodiments and in conjunction with the accompanying drawings.

[0017] Embodiment 1:

[0018] like Figure 1 and 2 As shown in FIG. 3 , an anti-vibration connection structure of an ignition coil includes an ignition coil, which is assembled in an engine. The engine includes an engine body 6 and an engine cover 5. The ignition coil includes a high-voltage connecting rod 2, an ignition coil body 1 and a spark plug 4 connected to each other. A mounting hole 7 is provided on the engine body 6, and the high-voltage connecting rod 2 of the ignition coil is assembled in the mounting hole 7.

[0019] Multiple rows of anti-vibration bumps 3 are evenly distributed on the outer circumferential surface of the high-voltage connecting rod 2. The outer circle formed by the anti-vibration bumps 3 is interference-fitted with the inner circle of the mounting hole 7, thereby ensuring the anti-vibration effect of the high-voltage connecting rod. The anti-vibration bumps include a bump body 9, and the bump body 9 is transitionally connected to the outer surface of the high-voltage connecting rod through an arc surface 8. The bump body 9 is trapezoidal, and the plane on the lower side of the bump body is an inclined guide surface 10. The upper end of the mounting hole is provided with an inclined surface that matches the guide surface, so that the high-voltage connecting rod 2 can be easily assembled.

[0020] When in use, a compression spring is installed in the high-voltage connecting rod 2 with an anti-vibration bump, and then it is interference-fitted with the ignition coil body 1. One end of the compression spring in the high-voltage connecting rod 2 contacts the resistor cap of the fixed resistor in the ignition coil body 1, and the other end of the compression spring contacts the spark plug 4. High-voltage protection is achieved by interference fitting the inner circle of the head of the high-voltage connecting rod 2 with the outer circle of the spark plug 4, and the circuit conduction from the ignition coil body 1 to the spark plug high voltage electricity is achieved. The spark plug 4 is installed on the engine body. When the primary current in the ignition coil body is turned off, the secondary inductor outputs high voltage electricity and breaks down and discharges at a high voltage on the spark plug discharge electrode inside the engine, realizing the conversion of electrical energy and thermal energy, and realizing the ignition of the engine.

[0021] Embodiment 2:

[0022] like Figure 4 As shown, different from Example 1, the anti-vibration protrusion on the high-voltage connecting rod 2 includes a protrusion body 9, and the protrusion body 9 and the outer surface of the high-voltage connecting rod 2 are transitionally connected by an arc surface 8. A groove 11 is provided on the surface of the protrusion body, and the groove 11 divides the protrusion body 9 into two parts. The design of the groove further reduces the contact surface between the anti-vibration protrusion and the inner wall of the mounting hole, thereby improving the convenience of assembly, while also ensuring the anti-vibration effect of the interference fit.

[0023] The specific embodiments described herein are merely examples of the concept of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. An anti-vibration connection structure of an ignition coil, characterized in that: The invention comprises a high-voltage connecting rod of an ignition coil, wherein the high-voltage connecting rod is located in a mounting hole of an engine body, one end of the high-voltage connecting rod is connected to the ignition coil body, and the other end of the high-voltage connecting rod is connected to a spark plug, and an elastic anti-vibration protrusion is arranged on the outer circumferential surface of the high-voltage connecting rod, and the outer circumferential surface formed by the anti-vibration protrusion is interference-fitted with the mounting hole of the engine body.

2. The anti-vibration connection structure of an ignition coil according to claim 1, characterized in that: The anti-vibration bumps are evenly distributed on the outer circumferential surface of the high-voltage connecting rod.

3. The anti-vibration connection structure of an ignition coil according to claim 1, characterized in that: The anti-vibration convex block comprises a guide surface, the guide surface is located at the lower side of the anti-vibration convex block, and the upper edge of the mounting hole of the engine body is provided with an inclined surface matching the guide surface.

4. The anti-vibration connection structure of an ignition coil according to any one of claims 1 to 3, characterized in that: The anti-vibration bump comprises a bump body, and the bump body is connected to the outer surface of the high-voltage connecting rod through an arc-shaped surface transition.

5. The anti-vibration connection structure of an ignition coil according to any one of claims 1 to 3, characterized in that: The anti-vibration bump comprises a bump body, and a groove is formed on the upper surface of the bump body.

6. The anti-vibration connection structure of an ignition coil according to any one of claims 1 to 3, characterized in that: A compression spring is arranged at one end of the high-voltage connecting rod connected to the spark plug, and the high-voltage connecting rod and the spark plug are interference-fitted.

7. The anti-vibration connection structure of an ignition coil according to any one of claims 1 to 3, characterized in that: The high-voltage connecting rod and the anti-vibration convex block are integrally formed, and the high-voltage connecting rod and the anti-vibration convex block are made of rubber material.

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