An ignition coil mounting structure

Abstract

This utility model provides an ignition coil mounting structure for mounting an ignition coil housing, comprising: a fixing tube mounted on the ignition coil housing; a mounting tube mounted on the engine compartment, the mounting tube having a limiting groove along its axial direction; two movable blocks, the fixing tube having a mounting rod inside, both movable blocks being slidably mounted on the mounting rod, each movable block having a limiting block at its end, and an elastic element between the two movable blocks. The ignition coil housing with the fixing tube mounted is fastened to a designated position on the engine, causing the movable blocks inside the fixing tube to extend into the mounting tube, thus compressing the elastic element. When the limiting blocks align with the limiting grooves, the limiting blocks can be engaged into the limiting grooves under the action of the elastic element, completing the locking. During disassembly, simply overcome the elastic force of the elastic element and squeeze the two movable blocks towards the center, causing the limiting blocks to retract radially inward from the limiting grooves, easily removing the entire ignition coil housing.

Description

Technical Field

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

[0002] With the rapid development of drone technology, gasoline-powered drones have been widely used in many fields such as agricultural plant protection, logistics and transportation, geographic surveying and mapping, power line inspection and emergency rescue due to their advantages such as long endurance, strong load capacity and convenient refueling. The core power of gasoline-powered drones comes from their small gasoline or heavy oil engines.

[0003] As the core component of the ignition system of a gasoline engine, the ignition coil is responsible for converting the low voltage of the battery into a high-voltage pulse sufficient to break down the spark plug gap and ignite the air-fuel mixture. Currently, the installation method of ignition coils on gasoline-powered drones mostly draws on the experience of traditional motorcycles, small general-purpose engines, or lawnmowers, directly fixing them with screws. However, this method is prone to loosening or even falling off during long-term use, and disassembly requires tools such as wrenches, making maintenance inconvenient. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides an ignition coil mounting structure that solves the problem of inconvenient disassembly and maintenance of ignition coils after they are fixed with screws in the prior art.

[0005] According to the embodiments of this utility model, the following technical solution is adopted:

[0006] An ignition coil mounting structure for mounting an ignition coil housing, comprising:

[0007] The mounting tube is installed on the ignition coil housing;

[0008] The mounting tube installed in the engine housing has a limit groove along its axial direction.

[0009] Two movable blocks are provided. A mounting rod is provided inside the fixed tube. Both movable blocks are slidably mounted on the mounting rod. A limit block is provided at the end of each movable block. An elastic element is also provided between the two movable blocks to engage the limit block with the limit groove.

[0010] Preferably, the elastic element is a spring, which is sleeved on the mounting rod, and the two ends of the spring abut against the two movable blocks respectively.

[0011] Preferably, the movable block is also fixedly provided with a connecting block, the connecting block has an inclined guide groove, the fixed tube is provided with an adjusting rod, the end of the adjusting rod is provided with an adjusting block, the adjusting block is provided with a driving rod, and the driving rod is slidably provided in the guide groove.

[0012] Preferably, the end of the adjusting rod away from the adjusting block extends out of the top of the fixing tube.

[0013] Preferably, the limiting block is wedge-shaped, and the large end of the wedge abuts against the limiting groove.

[0014] Preferably, the mounting pipe has threads.

[0015] Preferably, the end of the mounting tube away from the thread has two symmetrical grooves.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] In this solution, the mounting tube is installed at a designated position on the engine, replacing the original threaded hole. Combined with a movable block, a limiting block, and an elastic element, the ignition coil housing is installed by directly fastening the housing with the mounting tube to the designated position on the engine. This allows the movable block inside the mounting tube to extend into the mounting tube, compressing the elastic element. When the limiting block aligns with the limiting groove, the elastic element engages the limiting block in the groove, achieving axial limiting and locking. During disassembly, simply overcome the elastic force of the elastic element and press the two movable blocks towards the center, causing the limiting block to retract radially inward from the limiting groove, easily removing the entire ignition coil housing. This eliminates the need for traditional threaded connections, facilitating both installation and disassembly, and preventing stripping of the threads. Attached Figure Description

[0018] Figure 1 This is an exploded structural diagram of the ignition coil housing and mounting tube in an embodiment of this utility model.

[0019] Figure 2 for Figure 1 A cross-sectional structural diagram and a partially enlarged diagram.

[0020] Figure 3 This is a cross-sectional structural diagram of the fixing tube and the mounting tube in an embodiment of this utility model.

[0021] In the above attached figures: 1. Ignition coil housing; 2. Mounting tube; 201. Thread; 202. Groove; 203. Limiting groove; 3. Fixing tube; 4. Movable block; 401. Limiting block; 5. Connecting block; 501. Guide groove; 6. Adjusting block; 601. Drive rod; 7. Adjusting rod; 8. Mounting rod; 9. Spring. Detailed Implementation

[0022] The technical solution of this utility model will be further described below with reference to the accompanying drawings and embodiments.

[0023] This utility model embodiment proposes an ignition coil mounting structure for mounting an ignition coil housing 1, comprising:

[0024] The fixing tube 3 is installed in the ignition coil housing 1;

[0025] The mounting tube 2 is installed in the engine housing, and a limiting groove 203 is provided along its axial direction;

[0026] Two movable blocks 4 are provided. The fixed tube 3 is provided with an installation rod 8. Both movable blocks 4 are slidably mounted on the installation rod 8. Each end of the two movable blocks 4 is provided with a limiting block 401. An elastic element is also provided between the two movable blocks 4 to engage the limiting block 401 with the limiting groove 203.

[0027] In a conventional engine housing, there are mounting holes for installing the ignition coil housing 1. In the embodiments of this utility model, such as... Figure 1 As shown, the mounting tube 2 is installed into the mounting hole on the engine block. The installation method can be welding or bonding. Preferably, for ease of assembly and subsequent disassembly, the mounting tube 2 is threaded 201 without affecting the normal structure of the engine block. By providing a thread 201 with the same pitch as the mounting hole, the mounting tube 2 can be quickly threaded into the mounting hole. Furthermore, the end of the mounting tube 2 away from the thread 201 has two symmetrical grooves 202, facilitating assembly into the mounting hole using tools such as a wrench, eliminating the need for subsequent disassembly. Meanwhile, since the ignition coil housing 1 is mostly a through-hole structure, the fixing tube 3 can be fixed by welding or bonding.

[0028] When installing the ignition coil housing 1, the ignition coil housing 1 with the mounting tube 3 is directly fastened to the designated position on the engine, causing the movable block 4 inside the mounting tube 3 to extend into the mounting tube 2, thus compressing the elastic element. When the limiting block 401 corresponds to the limiting groove 203, the limiting block 401 can be engaged with the limiting groove 203 under the action of the elastic element, achieving axial limiting and locking. Simultaneously, during disassembly, simply overcome the elastic force of the elastic element and press the two movable blocks 4 towards the center, causing the limiting block 401 to retract radially inward from the limiting groove 203, easily disassembling the entire ignition coil housing 1. This eliminates the need for traditional threaded connections, facilitating both initial installation and subsequent disassembly, and preventing stripping of threads. The aforementioned elastic element can be a spring sheet, which is pressed and fixed between the two movable blocks 4.

[0029] Preferred, such as Figure 2As shown, the elastic element is a spring 9, which is sleeved on the mounting rod 8, and its two ends abut against the two movable blocks 4 respectively. The spring 9 can provide a continuous and uniform thrust to the two movable blocks 4, ensuring that the limiting block 401 is firmly engaged in the limiting groove 203. It also has a long service life and good fatigue resistance, and can maintain its elasticity and reliability for a long time. At the same time, under the action of the mounting rod 8, it can provide a stable installation position for the spring 9, preventing the spring 9 from coming off between the two movable blocks 4.

[0030] Based on the above solutions, such as Figure 3 As shown, the movable block 4 is also fixedly provided with a connecting block 5. The connecting block 5 has an inclined guide groove 501. The fixed tube 3 is provided with an adjusting rod 7. The end of the adjusting rod 7 is provided with an adjusting block 6. The adjusting block 6 is provided with a driving rod 601. The driving rod 601 is slidably provided in the guide groove 501.

[0031] To facilitate manual adjustment of the two movable blocks 4, in the initial state, both movable blocks 4 are pressed against the inner side of the fixed tube 3 by the pressure of the spring 9, and the drive rod 601 on the adjusting block 6 is located at the top of the guide groove 501. When the two movable blocks 4 are brought closer together, the adjusting rod 7 is pressed, causing the adjusting rod 7 to drive the adjusting block 6 to descend. Since the drive rod 601 is limited, it can only move along the axial direction of the fixed tube 3, and the connecting block 5 is also limited by the mounting rod 8 and can only move radially along the fixed tube 3. Therefore, when the adjusting block 6 descends, the drive rod 601 will squeeze the inclined side of the guide groove 501, causing the connecting block 5 to move radially, thereby compressing the spring 9, realizing the close proximity of the two movable blocks 4, thereby separating the limiting block 401 from the limiting groove 203, and realizing the disassembly of the ignition coil housing 1. Meanwhile, the end of the adjusting rod 7 away from the adjusting block 6 extends out of the top of the fixed tube 3, making it convenient for manual operation. When the end of the adjusting rod 7 is pressed flush with the top surface of the fixed tube 3, the limiting block 401 is just separated from the limiting groove 203. When released, the adjusting rod 7 and the movable block 4 will reset under the action of the spring 9.

[0032] Specifically, the limiting block 401 is wedge-shaped, with the larger end of the wedge abutting against the limiting groove 203. To facilitate the installation of the ignition coil housing 1, the wedge-shaped inclined surface of the limiting block 401 corresponds to the mounting tube 2. During installation, there is no need to manually operate the adjusting rod 7. When the wedge-shaped inclined surface of the limiting block 401 is pressed against the opening of the mounting tube 2, the limiting block 401 will automatically move radially under the action of the wedge-shaped inclined surface until the limiting block 401 is fully inserted into the mounting tube 2. When the limiting block 401 is aligned with the limiting groove 203, it can automatically engage under the action of the spring 9.

[0033] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. An ignition coil mounting structure for mounting an ignition coil case (1), characterized by, include: The fixing tube (3) is installed on the ignition coil housing (1); The mounting tube (2) installed in the engine housing has a limiting groove (203) along its axial direction; Two movable blocks (4), an installation rod (8) is provided inside the fixed tube (3), both movable blocks (4) are slidably disposed on the installation rod (8), each of the ends of the two movable blocks (4) is provided with a limiting block (401), and an elastic element is provided between the two movable blocks (4) for engaging the limiting block (401) with the limiting groove (203).

2. The ignition coil mounting structure according to claim 1, characterized by The elastic element is a spring (9), which is sleeved on the mounting rod (8), and the two ends of the spring (9) abut against the two movable blocks (4) respectively.

3. The ignition coil mounting structure according to claim 1, characterized by The movable block (4) is also fixedly provided with a connecting block (5), the connecting block (5) is provided with an inclined guide groove (501), the fixed tube (3) is provided with an adjusting rod (7), the end of the adjusting rod (7) is provided with an adjusting block (6), the adjusting block (6) is provided with a driving rod (601), and the driving rod (601) is slidably provided in the guide groove (501).

4. The ignition coil mounting structure according to claim 3, characterized by The end of the adjusting rod (7) away from the adjusting block (6) extends out from the top of the fixed tube (3).

5. The ignition coil mounting structure according to claim 1, characterized by The limiting block (401) is wedge-shaped, and the large end of the wedge abuts against the limiting groove (203).

6. The ignition coil mounting structure according to claim 1, characterized by The mounting pipe (2) is threaded (201).

7. The ignition coil mounting structure according to claim 6, characterized by The mounting tube (2) has two symmetrical grooves (202) at the end away from the thread (201).

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