Built-in ignition structure of engine

Abstract

The utility model belongs to the technical field of sparking plugs of snowfield motorcycles, and provides a built-in ignition structure of an engine, which comprises an ignition coil component mounted on a cylinder head cover, and is characterized in that a mounting hole is formed in the cylinder head cover, and a limiting part is arranged on the upper side of the cylinder head cover; the lower portion of the ignition coil penetrates through the mounting hole and extends into the cylinder head cover, a fixing portion matched with the limiting portion is arranged on one side of the upper portion of the ignition coil assembly, the limiting portion is detachably connected with the fixing portion, and a sealing assembly is arranged between the ignition coil assembly and the top of the cylinder head cover. The installation hole can limit the ignition coil assembly, the fixing part is matched with the limiting part, the ignition coil assembly can be limited, it can be guaranteed that the ignition coil assembly is fixed reliably, and the problem that the ignition coil assembly is loosened due to bumping is solved; and meanwhile, the sealing assembly can seal the ignition coil assembly and the cylinder head cover, and water is prevented from entering the space between the ignition coil assembly and the cylinder head cover.

Description

TECHNICAL FIELD

[0001] The engine built-in ignition structure belongs to the technical field of engine accessories. BACKGROUND

[0002] The working principle of the engine ignition system is to ignite the mixture by generating an electric spark, thereby starting the engine. The performance of the ignition system has a significant impact on the power, fuel consumption and exhaust pollution of the engine. A good ignition system can ensure the efficient operation of the engine, reduce energy waste and environmental pollution. Maintenance and maintenance of the ignition system are crucial to maintaining the optimal performance of the engine.

[0003] The utility model discloses a ignition coil, including the shell, the coil assembly and the ignition module of setting in the shell, the lower end of coil assembly is connected with high pressure head assembly, and the upper end of ignition module is connected to low pressure head, the primary connecting sheet is established on the coil assembly, and the primary wire head is inserted into the primary connecting sheet on the coil assembly and is welded and fixed with the primary connecting sheet. The utility model has the advantages that compared with the prior art, the primary connecting sheet of new structure is adopted, the primary wire head is inserted into the angle of V-shaped welding end and is limited, and the primary wire head is welded with the bending wall on both sides of the angle, the primary wire head is exempted from the paint removal step, the welding point is stable and firm, and is not easy to loosen, and the position of ignition module and coil assembly is limited through the positioning connection of positioning column and perforation, so that the connection is more stable. When used on a snowmobile, the driving environment of the snowmobile is relatively poor, which leads to easy loosening of the ignition coil. In addition, when the snowmobile is driving, the engine temperature is high, and the water produced after the snow melts is easy to enter the engine through the edge of the ignition coil, affecting the work of the engine. CONTENT

[0004] The technical problem to be solved by the utility model is to overcome the shortcomings of the prior art, provide an engine built-in ignition structure that can ensure reliable installation of the ignition coil assembly and avoid water leakage between the ignition coil assembly and the cylinder head cover.

[0005] The technical scheme adopted by the utility model to solve its technical problem is: an engine built-in ignition structure, including an ignition coil assembly installed on a cylinder head cover, an installation hole is arranged on the cylinder head cover, a limiting portion is arranged on the upper side of the cylinder head cover, the lower part of the ignition coil assembly passes through the installation hole and extends into the cylinder head cover, a fixing portion is arranged on one side of the upper part of the ignition coil assembly and cooperates with the limiting portion, the limiting portion and the fixing portion are detachably connected, and a sealing assembly is arranged between the ignition coil assembly and the top of the cylinder head cover.

[0006] Further, the sealing assembly comprises a sealing ring and an annular table, the annular table is integrally arranged on the upper side of the cylinder head cover, and the annular table is coaxially arranged with the mounting hole; the sealing ring is sleeved on the outer side of the upper portion of the ignition coil assembly; and the annular table extends into the sealing ring.

[0007] Further, a sealing groove is arranged around the bottom of the sealing ring, the annular table extends into the sealing groove, and the annular table is in interference fit with the sealing groove.

[0008] Further, the ignition coil assembly comprises an ignition coil body, a protective cover, a rubber sleeve and a plug connector, the protective cover covers the top of the ignition coil body, the plug connector is arranged on one side of the protective cover, the plug piece in the plug connector is in conduction with the ignition coil body, a fixing portion is arranged on one side of the protective cover, the rubber sleeve is sleeved on the outer side of the ignition coil body, and the rubber sleeve is located on the lower side of the protective cover.

[0009] Further, the middle and lower portions of the rubber sleeve are in inverted circular table shape.

[0010] Further, the lower side of the rubber sleeve is provided with a plurality of fixing columns, and the fixing columns are arranged at intervals around the rubber sleeve.

[0011] Further, the top and bottom of the plug connector are provided with guide plates, and the guide plates are arranged in parallel.

[0012] Further, two guide plates are arranged at intervals on the upper side of the plug connector, a limiting block is arranged on the plug connector between the two guide plates, and the limiting block is in hook shape.

[0013] Compared with the prior art, the utility model has the beneficial effects that:

[0014] The mounting hole can limit the ignition coil assembly, the fixing portion cooperates with the limiting portion, the ignition coil assembly can be limited and fixed reliably, the problem that the ignition coil assembly is loosened due to bumping is avoided, and the sealing assembly can seal between the ignition coil assembly and the cylinder head cover, so that water is prevented from entering between the ignition coil assembly and the cylinder head cover. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 is a structural schematic view of the utility model;

[0016] Figure 2 is a sectional view of the utility model;

[0017] Figure 3 is an enlarged view of a part A;

[0018] Figure 4 is a structural schematic view of the ignition coil assembly.

[0019] In the figure: 1, ignition coil assembly; 11, protective cover; 12, rubber sleeve; 13, fixed column; 2, cylinder head cover; 21, limiting table; 3, fixed plate; 4, spark plug hole; 5, sealing ring; 6, plug; 61, guide plate; 62, limiting block. DETAILED DESCRIPTION

[0020] The utility model will be further explained below in combination with specific embodiments, however, people skilled in the art should understand that the detailed description given in combination with the drawings is for better explanation, and the structure of the utility model must be beyond the limited embodiments, and for some equivalent replacement schemes or common means, the detailed description will not be described in detail, but still belongs to the protection scope of the application.

[0021] Figures 1-4 It is the best embodiment of the utility model, and the following will be combined with the drawings Figure 1 The drawings Figure 4 The utility model will be further explained below in combination with specific embodiments, however, people skilled in the art should understand that the detailed description given in combination with the drawings is for better explanation, and the structure of the utility model must be beyond the limited embodiments, and for some equivalent replacement schemes or common means, the detailed description will not be described in detail, but still belongs to the protection scope of the application.

[0022] Refer to the drawings Figures 1-4 An engine built-in ignition structure, including the ignition coil assembly 1 installed on the cylinder head cover 2, set up in the mounting hole on the cylinder head cover 2, the upper side of the cylinder head cover 2 is provided with the limiting portion, the lower part of the ignition coil assembly 1 passes through the mounting hole and stretches to the inside of the cylinder head cover 2, the upper portion of the ignition coil assembly 1 one side is provided with the fixed part matched with the limiting portion, and the limiting portion and the fixed part are detachably connected, and the sealing assembly is arranged between the ignition coil assembly 1 and the top of the cylinder head cover 2.The mounting hole of the utility model can limit the ignition coil assembly 1, the fixed part is matched with the limiting portion, which can realize the limiting of the ignition coil assembly 1, ensure that the ignition coil assembly 1 is fixed reliably, avoid the problem that the ignition coil assembly 1 is loose due to jolt, and the sealing assembly can seal between the ignition coil assembly 1 and the cylinder head cover 2, to avoid water entering between the ignition coil assembly 1 and the cylinder head cover 2.

[0023] Specifically, the ignition coil assembly 1 is provided with a plurality of ignition coil assemblies 1 arranged side by side and spaced apart, in this embodiment, the ignition coil assembly 1 is provided with three ignition coil assemblies 1 arranged side by side and spaced apart.

[0024] The ignition coil assembly 1 comprises an ignition coil body, a protective cover 11, a rubber sleeve 12 and a plug-in connector 6, the protective cover 11 is arranged on the top of the ignition coil body, the plug-in connector 6 is arranged on one side of the protective cover 11, the plug-in connector 6 is in conduction with the ignition coil body, the fixed part and the plug-in connector 6 are arranged on the opposite sides of the protective cover 11 to avoid the interference to the wiring of the plug-in connector 6. The spark plug is arranged on the bottom of the ignition coil body and is in conduction with the ignition coil body, the lower part of the ignition coil is provided with a spark plug hole 4, the upper part of the spark plug is arranged in the spark plug hole 4. The rubber sleeve 12 is arranged outside the ignition coil body, and specifically, the rubber sleeve 12 is arranged outside the upper part of the spark plug. The middle and lower parts of the rubber sleeve 12 are in the shape of an inverted circular table. The lower side of the rubber sleeve 12 is provided with a plurality of fixed columns 13, the fixed columns 13 are uniformly distributed around the rubber sleeve 12, and the fixed columns 13 are used for clamping and fixing, so that the spark plug is stably arranged in the spark plug hole 4.

[0025] The outer wall of the plug-in connector 6 is provided with a guide plate 61, a plurality of guide plates 61 are arranged at intervals, and each guide plate 61 is arranged in parallel and at intervals, so that the connection is more reliable when the plug-in connector 6 is connected with the snowmobile. In the embodiment, two guide plates 61 are symmetrically arranged on the top of the plug-in connector 6, and one guide plate 61 is arranged on the middle of the lower side of the plug-in connector 6.

[0026] The top of the plug-in connector 6 is further provided with a limiting block 62, the bottom of the limiting block 62 is integrally arranged with the plug-in connector 6, the top of the limiting block 62 is in the shape of an inclined surface gradually downward in the direction close to the protective cover 11, thereby forming an inverted hook shape, so as to ensure reliable connection and avoid loosening.

[0027] A fixed plate 3 is arranged on one side of the protective cover 11, and a fixed part is arranged on one side of the protective cover 11, a through hole is arranged on the fixed plate 3, a limiting table 21 is arranged on the top of the cylinder head cover 2, the limiting table 21 is located on one side of the corresponding mounting hole, a threaded hole is arranged on the limiting table 21, and the bottom of the fixed plate 3 is supported on the top of the limiting table 21, so that the limiting of the ignition coil assembly 1 is realized through the fixed plate 3. The fixed plate 3 and the limiting table 21 are fixedly connected through a bolt, the end of the bolt can be slid through the through hole on the fixed plate 3 and extend into the threaded hole of the limiting table 21, and the bolt is threadedly connected with the threaded hole, so that the limiting of the ignition coil assembly 1 is realized, and the fixing of the ignition coil assembly 1 is also realized.

[0028] The sealing assembly comprises a sealing ring 5 and an annular table, the annular table is arranged on the top of the cylinder head cover 2, the annular table is coaxially arranged with the corresponding mounting hole, the sealing ring 5 is arranged on the lower side of the protective cover 11, a sealing groove is arranged around the bottom of the sealing ring 5, when the lower part of the ignition coil assembly 1 extends into the mounting hole, the annular table extends into the sealing groove, and the annular table and the sealing groove are in interference fit, so as to ensure good sealing effect between the ignition coil assembly 1 and the annular table.

[0029] The above merely describes preferred embodiments of the present application, and is not intended to limit the present application in other forms. Any skilled person in the art can modify or alter the disclosed technology content to equivalent embodiments with equivalent changes. However, any simple modification, equivalent change and alteration of the above embodiments without departing from the technical solution of the present application, according to the technical essence of the present application, still belongs to the protection scope of the present application.

Claims

1. An engine built-in ignition structure comprising an ignition coil assembly (1) mounted on a cylinder head cover (2), characterized in that: The ignition coil assembly (1) is arranged in the mounting hole of the cylinder head cover (2), the upper side of the cylinder head cover (2) is provided with a limiting part, the lower part of the ignition coil assembly (1) passes through the mounting hole and extends into the cylinder head cover (2), the upper part of the ignition coil assembly (1) is provided with a fixed part matched with the limiting part, the limiting part and the fixed part are detachably connected, and a sealing assembly is arranged between the ignition coil assembly (1) and the top of the cylinder head cover (2).

2. An engine built-in ignition structure according to claim 1, characterized by: The sealing assembly comprises a sealing ring (5) and an annular table, the annular table is integrally arranged on the upper side of the cylinder head cover (2), and the annular table is coaxially arranged with the mounting hole; the sealing ring (5) is sleeved on the outer side of the upper part of the ignition coil assembly (1), and the annular table extends into the sealing ring (5).

3. An engine built-in ignition structure according to claim 2, characterized by: A sealing groove is arranged around the bottom of the sealing ring (5), the annular table extends into the sealing groove, and the annular table and the sealing groove are in interference fit.

4. An engine built-in ignition structure according to claim 1, characterized by: The ignition coil assembly (1) comprises an ignition coil body, a protective cover (11), a rubber sleeve (12) and a plug connector (6), the protective cover (11) covers the top of the ignition coil body, the plug connector (6) is arranged on one side of the protective cover (11), the plug in the plug connector (6) is in conduction with the ignition coil body, the fixed part is arranged on one side of the protective cover (11), the rubber sleeve (12) is sleeved on the outer side of the ignition coil body, and the rubber sleeve (12) is located on the lower side of the protective cover (11).

5. An engine built-in ignition structure according to claim 4, characterized by: The middle and lower parts of the rubber sleeve (12) are in inverted circular table shape.

6. An engine built-in ignition structure according to claim 5, characterized by: The lower side of the rubber sleeve (12) is provided with a plurality of fixed columns (13), and the fixed columns (13) are arranged at intervals around the rubber sleeve (12).

7. An engine built-in ignition structure according to claim 4, characterized by: The top and bottom of the plug connector (6) are provided with guide plates (61), and the guide plates (61) are arranged in parallel.

8. An engine built-in ignition structure according to claim 7, characterized by: Two guide plates (61) are arranged at intervals on the upper side of the plug connector (6), a limiting block (62) is arranged on the plug connector (6) between the two guide plates (61), and the limiting block (62) is in the shape of a barb.

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