阅读说明：本技术 一种带防水胶套密封结构的燃气用直插式点火系统 (Direct insertion type ignition system with waterproof rubber sleeve sealing structure for gas ) 是由 段振涛 韦攀 盛利 覃星念 叶双超 刘志治 于 2019-09-18 设计创作，主要内容包括：本发明公开了一种带防水胶套密封结构的燃气用直插式点火系统,点火系统包括套管和点火线圈,还包括胶套,胶套包括倒立的碗状结构和沿碗状结构内底面向下延伸的柱套,柱套设有内腔,内腔贯通碗状结构的底面,碗状结构的内壁设有凸筋,柱套插设于套管的末端,并使凸筋与套管过盈配合连接；套管内设有插接部,点火线圈穿过内腔,并插设于插接部。本发明解决了由于整车在上路前或其他原因进行整车清洗而导致的点火系统胶套进水的难题。(The invention discloses a direct insertion type ignition system for gas with a waterproof rubber sleeve sealing structure, which comprises a sleeve, an ignition coil and a rubber sleeve, wherein the rubber sleeve comprises an inverted bowl-shaped structure and a column sleeve extending downwards along the inner bottom surface of the bowl-shaped structure; the sleeve pipe is internally provided with a plug-in part, and the ignition coil passes through the inner cavity and is plugged in the plug-in part. The invention solves the problem of water inlet of the rubber sleeve of the ignition system caused by cleaning the whole vehicle before the whole vehicle is on the road or for other reasons.)

1. The direct insertion type ignition system with the waterproof rubber sleeve sealing structure for the gas comprises a sleeve and an ignition coil, and is characterized by further comprising a rubber sleeve, wherein the rubber sleeve comprises an inverted bowl-shaped structure and a column sleeve extending downwards along the inner bottom surface of the bowl-shaped structure, the column sleeve is provided with an inner cavity, the inner cavity penetrates through the bottom surface of the bowl-shaped structure, a convex rib is arranged on the inner wall of the bowl-shaped structure, and the column sleeve is inserted at the tail end of the sleeve and is connected with the sleeve in an interference fit manner; the sleeve pipe is internally provided with a plug-in part, and the ignition coil penetrates through the inner cavity and is inserted in the plug-in part.

2. The gas in-line ignition system with a waterproof rubber sleeve sealing structure according to claim 1, wherein the number of the ribs is at least one.

3. The gas direct-insertion type ignition system with the waterproof rubber sleeve sealing structure according to claim 1, wherein the outer wall of the column sleeve is provided with at least three sealing rings.

4. The gas direct-insertion type ignition system with the waterproof rubber sleeve sealing structure according to claim 1, characterized in that an exhaust groove is formed in the bottom surface of the bowl-shaped structure, and one end of the exhaust groove extends to the convex rib.

5. The gas direct-insertion type ignition system with the waterproof rubber sleeve sealing structure according to claim 4, wherein the width of the exhaust groove is 0.5-1.5 mm, and the depth of the exhaust groove is 0.5-1.5 mm.

Technical Field

The invention relates to the technical field of engines, in particular to a direct insertion type ignition system for gas, which is provided with a waterproof rubber sleeve sealing structure.

Background

In order to meet the increasingly stringent emission legislation requirements and environmental protection requirements, it is necessary to clean the vehicle before it is on the road, especially before the muck vehicle comes out of the work site, which leads to engine failure due to the cleaning. The ignition system of the gas engine is arranged at the periphery of the engine, so that the ignition system is firstly a victim when a vehicle is washed, and the water inlet failure of the ignition system caused by washing is rare.

The ignition system of the gas engine needs to regularly check and replace the spark plug, and the existing ignition rubber sleeve design can only prevent partial dust and slight water splashing. The protection requirement that water is directly sprayed to the position cannot be met. As shown in fig. 3, when the water pressure is high, water flows into the ignition system from the gap between the sleeve 1 and the conventional rubber sleeve 11, as shown by the arrow in fig. 3.

Disclosure of Invention

Aiming at the problems, the invention provides a direct insertion type ignition system with a waterproof rubber sleeve sealing structure for gas, which solves the problem that the rubber sleeve of the ignition system is filled with water because the whole vehicle is cleaned before the whole vehicle is on the road or for other reasons.

The invention adopts the following technical scheme to realize the purpose:

The direct insertion type ignition system comprises a sleeve, an ignition coil and a rubber sleeve, wherein the rubber sleeve comprises an inverted bowl-shaped structure and a column sleeve extending downwards along the inner bottom surface of the bowl-shaped structure, the column sleeve is provided with an inner cavity, the inner cavity penetrates through the bottom surface of the bowl-shaped structure, a convex rib is arranged on the inner wall of the bowl-shaped structure, and the column sleeve is inserted at the tail end of the sleeve and is connected with the sleeve in an interference fit manner; the sleeve pipe is internally provided with a plug-in part, and the ignition coil penetrates through the inner cavity and is inserted in the plug-in part.

Preferably, the number of the ribs is at least one.

preferably, the outer wall of the column sleeve is provided with at least three sealing rings.

Preferably, the bottom surface of the bowl-shaped structure is provided with an exhaust groove, and one end of the exhaust groove extends to the convex rib.

preferably, the width of the exhaust groove is 0.5-1.5 mm, and the depth is 0.5-1.5 mm.

The invention has the beneficial effects that:

According to the direct insertion type ignition system for the fuel gas with the waterproof rubber sleeve sealing structure, the convex ribs are in interference fit with the sleeve, so that a first sealing effect is achieved; the rubber sleeve is in interference fit with the tail end of the sleeve, and an exhaust groove is formed in the bottom surface of the bowl-shaped structure of the rubber sleeve and used for keeping the balance of gas in the cavity of the sleeve, so that a second sealing effect is achieved; the outer wall of the column sleeve is provided with a sealing ring, and the sealing ring is positioned between the column sleeve and the inner wall of the sleeve to play a role in third sealing.

Drawings

Fig. 1 is an overall schematic view of a direct-insertion type gas ignition system with a waterproof rubber sleeve sealing structure provided by an embodiment of the invention;

Fig. 2 is a schematic structural diagram of a direct-insertion type gas ignition system with a waterproof rubber sleeve sealing structure according to an embodiment of the invention;

Fig. 3 is a schematic structural diagram of a conventional direct-insertion type gas ignition system with a waterproof rubber sleeve sealing structure described in the background of the invention.

in the figure, 1-sleeve, 2-ignition coil, 3-rubber sleeve, 4-inner cavity, 5-bowl structure, 6-column sleeve, 7-convex rib, 8-sealing ring, 9-exhaust groove, 10-plug part and 11-traditional rubber sleeve.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings 1-2 and the detailed description thereof.

Referring to fig. 1 and fig. 2, an embodiment of the present invention provides a direct-insertion type ignition system for gas with a waterproof rubber sleeve sealing structure, where the ignition system includes a sleeve 1, an ignition coil 2, and a rubber sleeve 3. The gum cover 3 includes an inverted bowl-like structure 5 and a post cover 6 extending downwardly along the bottom surface of the bowl-like structure 5. The column sleeve 6 is provided with an inner cavity 4. The cavity 4 extends through the bottom of the bowl 5. The inner wall of the bowl-shaped structure 5 is provided with a convex rib 7, the column sleeve 6 is inserted at the tail end of the sleeve 1, and the convex rib 7 is connected with the sleeve 1 in an interference fit manner. The sleeve is internally provided with a plug-in part 10, and the ignition coil 2 passes through the inner cavity 4 and is inserted in the plug-in part 10.

When the direct-insertion type ignition system with the waterproof rubber sleeve sealing structure for the fuel gas is used, the convex ribs 7 are in interference fit with the sleeve 1, so that a first sealing effect is achieved, and water is prevented from entering the sleeve 1. Ignition coil 2 then with inner chamber 4 interference fit, prevent that water from entering the sleeve pipe 1 from inner chamber 4.

Further, at least one rib 7 is provided. The outer wall of the column sleeve 6 is provided with a sealing ring 8. The number of the seal rings 8 is at least three. The bottom surface of the bowl-shaped structure 5 is provided with an exhaust groove 9. One end of the air discharge groove 9 extends to the convex rib 7. The width of the exhaust groove 9 is 1mm and the depth thereof is 1 mm.

The rubber sleeve 3 is in interference fit with the tail end of the sleeve 1, and the bottom surface of the bowl-shaped structure 5 of the rubber sleeve 3 is provided with an exhaust groove 9 for keeping the gas balance in the cavity of the sleeve 1, so that the rubber sleeve can prevent water splashing and ventilate, and simultaneously achieves the effect of secondary sealing; the outer wall of column jacket 6 is equipped with sealing ring 8, with sleeve pipe 1's inner wall interference fit, plays the sealed effect of third, carries out all-round protection to ignition system, and three sealed effects make ignition system can both play fine protective effect to various shower waters on the market.

the direct insertion type ignition system for gas with the waterproof rubber sleeve sealing structure has wide applicability, meets the requirements of road transportation vehicles and urban construction on vehicle cleaning, and avoids the faults of engine incapability, engine weakness or engine surge caused by water inflow of the ignition system of the gas engine due to vehicle cleaning. The reliability of the whole machine meets the use requirement of users and makes a contribution to city cleaning.

Although the invention has been described in detail above with reference to specific embodiments, it will be apparent to one skilled in the art that modifications or improvements may be made based on the invention. Accordingly, such modifications and improvements are intended to be within the scope of the invention as claimed.