Overhead ignition coil

Abstract

The utility model relates to the field of ignition coils, and discloses an overhead ignition coil which comprises an ignition coil body, a low-voltage plug is arranged at the top of the ignition coil body, a through groove communicated with the interior of the ignition coil body is formed in the middle of the low-voltage plug, and a low-voltage insertion piece is arranged in the low-voltage plug. A sealing part for sealing the through groove of the low-voltage plug is arranged at the end, away from the ignition coil body, of the through groove and comprises a sealing plug, and one end of the sealing plug can be partially inserted into the end, away from the ignition coil body, of the through groove. And a guide part for guiding when the sealing plug is inserted into the through groove is also arranged between the sealing plug and the low-voltage plug, so that the sealing plug can be inserted into the through groove of the low-voltage plug to seal the low-voltage plug. And dust and the like which enter the ignition coil from a through groove in the low-voltage plug and are attached to elements in the ignition coil when the ignition coil is stored after production is completed are reduced, so that the service life of the ignition coil is prolonged.

Description

Technical Field

[0001] The utility model relates to the field of ignition coils, in particular to a top-mounted ignition coil. Background Art

[0002] In the automobile engine ignition system, the ignition coil is an actuator that provides ignition energy for igniting the air and fuel mixture in the engine cylinder.

[0003] A Chinese patent with announcement number CN206116189U discloses a top-mounted ignition coil, including a socket, a low-voltage plug-in sheet is arranged inside the socket, one end of the socket is connected to an outer shell, an iron core is arranged inside the top of the outer shell, one end of the iron core is connected to a permanent magnet, and the end of the permanent magnet away from the iron core is connected to a magnetic conductive component, a primary skeleton is arranged on the outer surface of the iron core, a diode is arranged on the primary skeleton, a secondary skeleton is arranged on the outer surface of the primary skeleton, and the secondary skeleton is connected to a high-voltage conductive column through a wiring sheet.

[0004] One end of the socket in the above structure is open, and a low-voltage plug is arranged inside. When the above-mentioned ignition coil is produced and installed and stored in one place, dust and the like will fall into the interior of the ignition coil from the opening of the socket. The dust falling into the interior of the ignition coil may adhere to the low-voltage plug or other components, thereby affecting the service life of the ignition coil. Utility Model Content

[0005] The utility model aims at the disadvantage of the prior art that when the ignition coil is stored after production, dust and the like will fall into the interior of the ignition coil from the opening of the socket, and the dust falling into the interior of the ignition coil may adhere to the low-voltage plug or other components, thereby affecting the service life of the ignition coil. The utility model provides a top-mounted ignition coil with a sealing structure.

[0006] In order to solve the above technical problems, the utility model is solved by the following technical solutions:

[0007] A top-mounted ignition coil comprises an ignition coil body, a low-voltage plug is arranged on the top of the ignition coil body, a through groove which is mutually connected with the inside of the ignition coil body is arranged in the middle of the low-voltage plug, a low-voltage plug is arranged in the low-voltage plug, and a sealing component for sealing the through groove of the low-voltage plug is arranged at the end of the through groove away from the ignition coil body, the sealing component comprises a sealing plug whose one end can be partially inserted into the end of the through groove away from the ignition coil body, and a guide component is also arranged between the sealing plug and the low-voltage plug for guiding the sealing plug when it is inserted into the through groove.

[0008] By adopting the above scheme, the sealing plug can be inserted into the through groove on the low-voltage plug after the ignition coil is produced and installed, thereby sealing the through groove of the low-voltage plug, reducing the risk of dust and the like entering the interior of the ignition coil through the through groove on the low-voltage plug when the ignition coil is produced and stored, and adhering to the low-voltage plug inside the low-voltage plug or other parts of the ignition coil, thereby improving the service life of the ignition coil, and the guide component can guide the process of inserting the sealing plug into the through groove, thereby facilitating the insertion of the sealing plug into the through groove.

[0009] Preferably, the guide component includes a guide plate symmetrically arranged on the outer wall of the low-voltage plug in the same direction as the sealing plug insertion direction, guide blocks are respectively arranged on both sides of the sealing plug insertion end, and guide grooves are respectively arranged on the adjacent sides of the two guide blocks for guiding the guide plate to insert when the sealing plug is inserted into the through groove.

[0010] By adopting the above scheme, the guide plate can be gradually inserted into the guide groove on the guide block on the sealing plug when the sealing plug is inserted into the through groove of the low-pressure plug. At this time, the guide plate will guide the movement of the sealing plug, thereby facilitating the insertion of the sealing plug into the through groove of the low-pressure plug.

[0011] Preferably, the length of the guide block is greater than the length of the sealing plug.

[0012] By adopting the above scheme, the length of the guide block is set to be greater than the length of the sealing plug, so that when the sealing plug is inserted into the through groove of the low-pressure plug, the guide block will first abut against the guide plate on the outer wall of the low-pressure plug. At this time, the guide plate can be gradually inserted into the guide groove on the guide block, thereby guiding the installation of the sealing plug.

[0013] Preferably, a limiting component is provided between the guide plate and the guide block for limiting the position of the sealing plug when the insertion end of the sealing plug is fully inserted into the end of the through slot away from the ignition coil body.

[0014] Preferably, the guide block is formed of elastically deformable rubber or plastic material, and the limiting component comprises a limiting block arranged on the guide plate and a clamping groove arranged on the guide block for inserting the limiting block.

[0015] By adopting the above scheme, the guide block is made of elastically deformable rubber or plastic material, so that when the guide block abuts against the limit block, the guide block can be squeezed by the limit block and deformed, so that the limit block is inserted into the clamping groove on the guide block to limit the sealing plug.

[0016] Preferably, the shape of the limit block is a rectangle with rounded corners, or an isosceles trapezoid, an isosceles triangle, or an arch bridge in which the end close to the low-voltage plug is larger than the end away from the low-voltage plug.

[0017] By adopting the above scheme, the shape of the limit block is set to a rectangle with all four corners rounded, or an isosceles trapezoid, an isosceles triangle, or an arch bridge shape in which the end close to the low-pressure plug is larger than the end away from the low-pressure plug. This can facilitate the sealing plug to be inserted into the through groove on the low-pressure plug, so that the guide block made of elastically deformable materials such as rubber or plastic is squeezed by the limit block and deformed, so that the limit block can be gradually inserted into the clamping groove on the guide block to limit the sealing plug.

[0018] Preferably, the limit blocks are symmetrically arranged at the upper and lower ends of the guide plate, and the clamping grooves are symmetrically arranged on the side walls of the guide groove.

[0019] By adopting the above scheme, the limit blocks are symmetrically arranged at the upper and lower ends of the guide plate and the clamping grooves are symmetrically arranged on the side walls of the guide groove, so that the limiting effect of the limit component on the sealing plug is enhanced, and the probability of the sealing plug escaping from the through groove is further reduced.

[0020] The utility model adopts the above technical scheme, which has significant technical effects: the sealing plug can be inserted into the through groove on the low-voltage plug after the ignition coil is produced and installed, so as to seal the through groove of the low-voltage plug, thereby reducing the risk of dust and the like entering the interior of the ignition coil from the through groove of the low-voltage plug when the ignition coil is produced and stored and adhering to the low-voltage plug inside the low-voltage plug or other parts of the ignition coil, thereby improving the service life of the ignition coil, and the guide component can guide the process of inserting the sealing plug into the through groove, thereby facilitating the insertion of the sealing plug into the through groove. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is an axonometric view of an overhead ignition coil in this embodiment when a sealing plug is not installed;

[0022] Figure 2 is an axonometric view of the embodiment in which a sealing plug is installed on the low-voltage plug;

[0023] Figure 3 is a disassembled diagram of the low-voltage plug and the sealing plug in this embodiment;

[0024] Figure 4 It is an axonometric view of the sealing plug in this embodiment.

[0025] The names of the parts indicated by the numerical labels in the above drawings are as follows: 1. ignition coil body; 2. low-voltage plug; 3. low-voltage plug; 4. through groove; 5. sealing plug; 6. guide plate; 7. guide block; 8. guide groove; 9. limit block; 10. clamping groove. DETAILED DESCRIPTION

[0026] The utility model is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0027] Example

[0028] A top-mounted ignition coil, reference Figure 1-Figure 2 , including an ignition coil body 1, a low-voltage plug 2 is arranged on the top of the ignition coil body 1, a through groove 4 which is mutually connected with the inside of the ignition coil body 1 is arranged in the middle of the low-voltage plug 2, a low-voltage plug 3 is arranged in the low-voltage plug 2, and a sealing component for sealing the through groove 4 of the low-voltage plug 2 is arranged at the end of the through groove 4 away from the ignition coil body 1, the sealing component includes a sealing plug 5 whose one end can be partially inserted into the end of the through groove 4 away from the ignition coil body 1, and a guide component is also arranged between the sealing plug 5 and the low-voltage plug 2 for guiding when the sealing plug 5 is inserted into the through groove 4.

[0029] refer to Figure 2-Figure 4 The guide component includes a guide plate 6 symmetrically arranged on the outer wall of the low-voltage plug 2 in the same insertion direction as the sealing plug 5, and guide blocks 7 with a length greater than the length of the sealing plug 5 are respectively arranged on both sides of the insertion end of the sealing plug 5, and guide grooves 8 for guiding the guide plate 6 to be inserted when the sealing plug 5 is inserted into the through groove 4 are respectively arranged on the adjacent sides of the two guide blocks 7.

[0030] A limiting component is also provided between the guide plate 6 and the guide block 7 for limiting the position of the sealing plug 5 when the insertion end of the sealing plug 5 is fully inserted into the end of the through groove 4 away from the ignition coil body 1. The guide block 7 is formed of a rubber or plastic material that can undergo elastic deformation. The limiting component includes a limiting block 9 provided on the guide plate 6 and a clamping groove 10 provided on the guide block 7 for inserting the limiting block 9. The limiting blocks 9 are symmetrically arranged at the upper and lower ends of the guide plate 6, and the clamping groove 10 is symmetrically arranged on the side walls of the guide groove 8 on both sides. The shape of the limiting block 9 is a rectangle with four rounded corners or an isosceles trapezoid or an isosceles triangle or an arch bridge shape whose end close to the low-voltage plug 2 is larger than the end away from the low-voltage insertion. The limiting block 9 in this embodiment is a rectangle with four rounded corners. Compared with other shapes, the rectangle with four rounded corners has a greater damping for engagement or separation between the clamping groove 10 and the limiting block 9, which makes the probability of the sealing plug 5 coming out of the through groove 4 on the low-voltage plug 2 lower.

[0031] Specific installation process: When the ignition coil is produced and needs to be stored, the sealing plug 5 can be inserted into the through groove 4 on the low-voltage plug 2 to seal it. During the insertion of the sealing plug 5, first, align the guide groove 8 on the guide block 7 on the sealing plug 5 with the guide plate 6 on the outer wall of the low-voltage plug 2. Then, when the sealing plug 5 is moved, the guide plate 6 is gradually inserted into the guide groove 8. At this time, the sealing plug 5 will gradually be inserted into the through groove 4. At the same time, the end of the guide block 7 will gradually approach the limit block 9. When the end of the guide block 7 abuts against the limit block 9, the limit block 9 will squeeze the guide block 7, thereby driving the guide block 7 to insert and deform. At this time, the limit block 9 will enter the guide groove 8. When the limit block 9 is directly opposite to the clamping grooves 10 on both sides of the guide groove 8, the limit block 9 will be inserted into the clamping groove 10, and the guide block 7 will also return to its original state. At this time, the limit block 9 will limit the movement of the guide block 7, thereby reducing the probability of the sealing plug 5 coming out of the through groove 4.

[0032] The above is only a preferred embodiment of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A top-mounted ignition coil, comprising an ignition coil body (1), a low-voltage plug (2) being arranged on the top of the ignition coil body (1), a through slot (4) being arranged in the middle of the low-voltage plug (2) and being interpenetrating with the interior of the ignition coil body (1), a low-voltage plug (3) being arranged in the low-voltage plug (2), characterized in that: A sealing component for sealing the through slot (4) of the low-voltage plug (2) is provided at one end of the through slot (4) away from the ignition coil body (1), the sealing component comprising a sealing plug (5) one end of which can be partially inserted into the end of the through slot (4) away from the ignition coil body (1), and a guiding component for guiding the sealing plug (5) when it is inserted into the through slot (4) is also provided between the sealing plug (5) and the low-voltage plug (2).

2. The overhead ignition coil according to claim 1, characterized in that: The guide component comprises a guide plate (6) symmetrically arranged on the outer wall of the low-voltage plug (2) and in the same direction as the sealing plug (5) for insertion, guide blocks (7) are respectively arranged on both sides of the sealing plug (5) insertion end, and guide grooves (8) for guiding the guide plate (6) for insertion when the sealing plug (5) is inserted into the through groove (4) are respectively arranged on the adjacent sides of the two guide blocks (7).

3. The overhead ignition coil according to claim 2, characterized in that: The length of the guide block (7) is greater than the length of the sealing plug (5).

4. The overhead ignition coil according to claim 2, characterized in that: A limiting component is also provided between the guide plate (6) and the guide block (7) for limiting the position of the sealing plug (5) when the insertion end of the sealing plug (5) is fully inserted into the end of the through groove (4) away from the ignition coil body (1).

5. The overhead ignition coil according to claim 4, characterized in that: The guide block (7) is formed of elastically deformable rubber or plastic material, and the limiting component comprises a limiting block (9) arranged on the guide plate (6) and a clamping groove (10) arranged on the guide block (7) for the limiting block (9) to be inserted into.

6. The overhead ignition coil according to claim 5, characterized in that: The shape of the limit block (9) is a rectangle with four rounded corners, or an isosceles trapezoid, an isosceles triangle, or an arch bridge, in which the end close to the low-voltage plug (2) is larger than the end away from the low-voltage plug.

7. The overhead ignition coil according to claim 5, characterized in that: The limit blocks (9) are symmetrically arranged at the upper and lower ends of the guide plate (6), and the clamping grooves (10) are symmetrically arranged on the side walls of both sides of the guide groove (8).

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