Engine spark plug with good sealing performance

Abstract

The utility model discloses an engine spark plug with good sealing performance, which comprises an insulator, the bottom end of the insulator is fixedly connected with a metal tube, the outer surface of the metal tube is fixedly connected with a hexagonal block, the outer surface of the metal tube is provided with threads, the bottom end of the metal tube is fixedly connected with an outer electrode, and the outer electrode is fixedly connected with an inner electrode. The outer surface of the thread is fixedly connected with sealing rings arranged at equal intervals, and the upper surface of each sealing ring is fixedly connected with a sealing ring. According to the device, through the arrangement of the threads, the sealing ring, the sealing ring and the sealing sleeve, the metal pipe rotates in the mounting hole of the engine through the threads, the sealing ring and the sealing ring can be extruded to deform, meanwhile, air between the threads and the engine can be exhausted, and the sealing sleeve rotates along with the rotation of the metal pipe; when the spark plug is installed, the bottom face of the sealing sleeve can be attached to the upper surface of the engine installation hole, the spark plug has the advantage of being more compact in sealing performance after installation, and therefore the effect of avoiding leakage caused by gaps between threads when the spark plug is installed is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of spark plugs, in particular to an engine spark plug with good sealing performance. Background Art

[0002] Spark plugs, commonly known as spark nozzles, discharge the pulsed high voltage electricity sent by high-voltage wires, break through the air between the two electrodes of the spark plug, generate electric sparks to ignite the mixed gas in the cylinder. The main types are: quasi-type spark plugs, protruding insulator spark plugs, electrode spark plugs, seat spark plugs, pole spark plugs, surface sparking spark plugs, etc. The function of the spark plug is to introduce tens of thousands of volts of high voltage electricity into the combustion chamber, and generate electric sparks to ignite the mixed gas, and cooperate with the ignition system and fuel supply system to make the engine work, which largely determines the performance of the engine. The spark plugs currently used are simply sealed by threaded rotation after installation. If there is a gap between the spark plug thread and the engine mounting hole, it will cause engine failure, thereby causing huge losses to the car.

[0003] For this reason, we propose an engine spark plug with good sealing performance to solve the above problems. Utility Model Content

[0004] The utility model aims to provide an engine spark plug with good sealing performance to solve the problems raised in the above-mentioned background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] An engine spark plug with good sealing performance comprises an insulator, the bottom end of the insulator is fixedly connected to a metal tube, the outer surface of the metal tube is fixedly connected to a hexagonal block, the outer surface of the metal tube is provided with a thread, the bottom end of the metal tube is fixedly connected to an outer electrode, the outer surface of the thread is fixedly connected to sealing rings arranged at equal distances, the upper surface of each sealing ring is fixedly connected to a sealing ring, the outer surface of the insulator is provided with grooves arranged at equal distances, the inside of the metal tube is fixedly connected to an inner electrode, the inside of the metal tube is fixedly connected to a resistor, the inside of the insulator and the inside of the metal tube are fixedly connected to a metal core, and the outer surface of the metal tube is fixedly connected to a sealing sleeve.

[0007] In a further embodiment, an indicator plate is fixedly connected to the outer surface of the insulator, and the indicator plate is made of stainless steel.

[0008] In a further embodiment, a warning sign is fixedly connected to the outer surface of the hexagonal block, and a warning slogan is painted on the outer surface of the warning sign.

[0009] In a further embodiment, the insulator is made of ceramic material.

[0010] In a further embodiment, the outer surface of the metal pipe is coated with an anti-corrosion layer.

[0011] In a further embodiment, the number of the grooves is five, and the sealing sleeve is made of silicone.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] The device uses the threads, sealing rings, sealing rings and sealing sleeves to rotate the metal tube in the mounting hole of the engine through the threads. The sealing rings and sealing rings will be squeezed and deformed, and the air between the threads and the engine will be discharged. As the metal tube rotates, the bottom surface of the sealing sleeve will fit with the upper surface of the engine mounting hole, which has the advantage of tighter sealing after installation, thereby achieving the effect of avoiding leakage of the spark plug due to the gap between the threads during installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the front view structure of an engine spark plug with good sealing performance.

[0015] Figure 2 This is a schematic diagram of the rear view structure of an engine spark plug with good sealing performance.

[0016] Figure 3 This is a schematic diagram of the rear cross-sectional structure of an engine spark plug with good sealing performance.

[0017] In the figure: 1. insulator; 2. metal tube; 3. hexagonal block; 4. thread; 5. outer electrode; 6. sealing ring; 7. groove pattern; 8. sealing ring; 9. inner electrode; 10. resistor; 11. metal core; 12. indicator board; 13. warning sign; 14. sealing sleeve. DETAILED DESCRIPTION

[0018] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0019] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] See also Figure 1-3In the utility model, an engine spark plug with good sealing performance includes an insulator 1, a metal tube 2 is fixedly connected to the bottom end of the insulator 1, a hexagonal block 3 is fixedly connected to the outer surface of the metal tube 2, a thread 4 is provided on the outer surface of the metal tube 2, an outer electrode 5 is fixedly connected to the bottom end of the metal tube 2, a sealing ring 6 arranged at equal distances is fixedly connected to the outer surface of the thread 4, a sealing ring 8 is fixedly connected to the upper surface of each sealing ring 6, and grooves 7 arranged at equal distances are provided on the outer surface of the insulator 1. An inner electrode 9 is fixedly connected to the inside of the metal tube 2, a resistor 10 is fixedly connected to the inside of the metal tube 2, a metal core 11 is fixedly connected to the inside of the insulator 1 and the inside of the metal tube 2, and a sealing sleeve 14 is fixedly connected to the outer surface of the metal tube 2. Specifically, through the cooperation of the sealing ring 6 and the sealing ring 8, a gap between the thread 4 and the engine mounting hole can be prevented to prevent the internal gas of the engine from leaking.

[0022] An indicator plate 12 is fixedly connected to the outer surface of the insulator 1, and the indicator plate 12 is made of stainless steel. A warning sign 13 is fixedly connected to the outer surface of the hexagonal block 3, and a warning slogan is painted on the outer surface of the warning sign 13. The insulator 1 is made of ceramic material. Specifically, the indicator plate 12 is set so that the staff can install or disassemble the device according to the direction pointed by the indicator plate 12. The warning sign 13 is set to serve as a warning to prevent children from touching the device as a toy. The ceramic material used by the insulator 1 has the advantages of long life and corrosion resistance.

[0023] The outer surface of the metal tube 2 is coated with an anti-corrosion layer, and the number of grooves 7 is five. The sealing sleeve 14 is made of silicone. Specifically, the anti-corrosion layer coated on the metal tube 2 can increase the service life of the metal tube 2 and reduce the contact with the air to a certain extent. The number of grooves 7 is five, which can extend the insulation distance to a certain extent to prevent arcing.

[0024] The working principle of the utility model is:

[0025] First, use a tool to fit the hexagonal block 3, then place the device above the engine, and use the thread 4 to rotate the metal tube 2 at the mounting hole of the engine. As the metal tube 2 extends, the sealing ring 6 and the sealing ring 8 follow the metal tube 2 in. The sealing ring 6 and the sealing ring 8 will be squeezed and deformed by the external force at the same time, and the air between the thread 4 and the engine will be discharged. Finally, as the metal tube 2 rotates, the bottom surface of the sealing sleeve 14 will fit with the upper surface of the engine mounting hole, thereby completing the seal.

[0026] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0027] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. An engine spark plug with good sealing performance, characterized in that: The invention comprises an insulator (1), wherein the bottom end of the insulator (1) is fixedly connected to a metal tube (2), the outer surface of the metal tube (2) is fixedly connected to a hexagonal block (3), the outer surface of the metal tube (2) is provided with a thread (4), the bottom end of the metal tube (2) is fixedly connected to an outer electrode (5), the outer surface of the thread (4) is fixedly connected to sealing rings (6) arranged at equal distances, the upper surface of each sealing ring (6) is fixedly connected to a sealing ring (8), the outer surface of the insulator (1) is provided with grooves (7) arranged at equal distances, the inside of the metal tube (2) is fixedly connected to an inner electrode (9), the inside of the metal tube (2) is fixedly connected to a resistor (10), the inside of the insulator (1) and the inside of the metal tube (2) are fixedly connected to a metal core (11), and the outer surface of the metal tube (2) is fixedly connected to a sealing sleeve (14).

2. An engine spark plug with good sealing performance according to claim 1, characterized in that: An indicator plate (12) is fixedly connected to the outer surface of the insulator (1), and the indicator plate (12) is made of stainless steel.

3. An engine spark plug with good sealing performance according to claim 1, characterized in that: A warning sign (13) is fixedly connected to the outer surface of the hexagonal block (3), and a warning slogan is painted on the outer surface of the warning sign (13).

4. An engine spark plug with good sealing performance according to claim 1, characterized in that: The insulator (1) is made of ceramic material.

5. An engine spark plug with good sealing performance according to claim 1, characterized in that: The outer surface of the metal pipe (2) is coated with an anti-corrosion layer.

6. An engine spark plug with good sealing performance according to claim 1, characterized in that: The number of the groove-shaped patterns (7) is five, and the sealing sleeve (14) is made of silicone material.

Images