Spark plug with small center electrode

Abstract

The utility model discloses a spark plug with a central small electrode, which comprises a central electrode, an insulating cylinder is sleeved in the middle of the central electrode, a sleeve is sleeved in the middle of the insulating cylinder, a gasket is arranged at the bottom of the sleeve, a connecting cylinder is fixedly connected to the top end of the gasket, and the connecting cylinder is sleeved on the outer wall of the sleeve. Clamping grooves are symmetrically formed in the two sides of the connecting cylinder, and clamping blocks are clamped into the clamping grooves. Through the design of the connecting cylinder, the clamping groove, the clamping block, the containing groove and the pushing piece, when the gasket needs to be installed at the bottom of the sleeve, the gasket is moved to the bottom of the sleeve firstly, then the connecting cylinder at the top of the gasket is arranged on the outer wall of the sleeve in a sleeving mode, and finally the clamping block is driven by the pushing piece to move into the clamping groove; and therefore, the position of the connecting cylinder is fixed through the clamping block, the position of the gasket is fixed through the connecting cylinder at the fixed position, and the situation that the gasket falls off is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of spark plugs, in particular to a spark plug with a small central electrode. Background Art

[0002] A spark plug with a small center electrode is a spark plug commonly used in automobile ignition systems. It is characterized by a smaller center electrode inside the spark plug.

[0003] When installing the spark plug, a sealing ring is placed at the contact point between the spark plug and the object to seal the connection between the spark plug and the object. However, the traditional spark plug sealing ring is directly mounted on the spark plug. When the spark plug is placed vertically, the sealing ring may fall off, making it impossible to seal between the spark plug and the object, thus affecting its use. Utility Model Content

[0004] The purpose of the utility model is to provide a spark plug with a small central electrode to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a spark plug with a small center electrode, comprising a center electrode, an insulating tube is sleeved in the middle of the center electrode, a sleeve is sleeved in the middle of the insulating tube, a gasket is provided at the bottom of the sleeve, a connecting tube is fixedly connected to the top of the gasket, the connecting tube is sleeved on the outer wall of the sleeve, card grooves are symmetrically provided on both sides of the connecting tube, a card block is clamped inside the card groove, receiving grooves for receiving the card block are symmetrically provided on both sides of the sleeve, and a pushing member for pushing the card block is provided inside the receiving groove.

[0006] Preferably, the pushing member includes an elastic block fixedly connected to an inner wall of one side of the receiving groove, the clamping block is fixedly connected to one side of the elastic block, and one end of the clamping block is inserted and connected to the interior of the receiving groove.

[0007] Preferably, a rotating part for rotating the sleeve is provided at the top of the sleeve, and a fixing piece for fixing the position of the sleeve is provided at the bottom of the sleeve.

[0008] Preferably, the fixing member comprises a threaded barrel fixedly connected to the bottom end of the sleeve, the threaded barrel is inserted and connected to the middle of the gasket, and the insulating barrel is inserted and connected to the bottom of the threaded barrel.

[0009] Preferably, the gasket is arranged in a ring shape, and the threaded tube is inserted and connected in the middle of the gasket.

[0010] Preferably, a grounding electrode for generating sparks with the center electrode is provided at the bottom of the threaded barrel, and the grounding electrode is arranged in an L shape.

[0011] Preferably, the rotating member comprises a hexagonal twisting block fixedly connected to the top end of the sleeve, and the hexagonal twisting block is sleeved in the middle part of the insulating cylinder.

[0012] Technical effects and advantages of the utility model:

[0013] The utility model adopts the design of the connecting tube, the slot, the block, the storage slot and the pushing member. When the gasket needs to be installed on the bottom of the sleeve, the gasket is first moved to the bottom of the sleeve, and then the connecting tube on the top of the gasket is sleeved on the outer wall of the sleeve. Finally, the pushing member drives the block to move into the slot, so that the position of the connecting tube is fixed by the block, and the position of the gasket is fixed by the connecting tube in the fixed position, so as to avoid the gasket from falling off. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a side structural schematic diagram of the utility model.

[0015] Figure 2 It is a front sectional structural schematic diagram of the utility model.

[0016] Figure 3 For this utility model Figure 2 A schematic diagram of the enlarged structure of part A.

[0017] Figure 4 It is a schematic diagram of a half-part three-dimensional structure of the utility model.

[0018] In the figure: 1. center electrode; 2. insulating tube; 3. gasket; 4. connecting tube; 5. slot; 6. block; 7. storage slot; 8. elastic block; 9. threaded tube; 10. sleeve; 11. hexagonal screw block; 12. grounding electrode. DETAILED DESCRIPTION

[0019] 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.

[0020] The utility model provides Figure 1-4A spark plug with a small central electrode shown in the figure comprises a central electrode 1, an insulating tube 2 is sleeved in the middle of the central electrode 1, a sleeve 10 is sleeved in the middle of the insulating tube 2, a gasket 3 is provided at the bottom of the sleeve 10, a connecting tube 4 is fixedly connected to the top of the gasket 3, the connecting tube 4 is sleeved on the outer wall of the sleeve 10, and card grooves 5 are symmetrically provided on both sides of the connecting tube 4, a card block 6 is clamped inside the card groove 5, and receiving grooves 7 for accommodating the card block 6 are symmetrically provided on both sides of the sleeve 10, and a pushing member for pushing the card block 6 is provided inside the receiving groove 7.

[0021] It should be noted that the center electrode 1 is the part of the spark plug that emits the arc, and is usually made of high melting point metals such as platinum and iridium to ensure its stability and durability under high temperature and high pressure. It is located at the center of the spark plug and is the key part that generates sparks through high voltage current and ignites the fuel mixture. The insulating tube 2 is a component in the spark plug. Its main function is to provide insulation between the center electrode 1 and the outer shell and prevent the arc from crossing from the center electrode 1 to the spark plug shell. The insulating tube 2 is usually made of ceramic material because ceramic has good insulation properties and can withstand high temperature and high pressure environments, and also has good resistance to chemical corrosion; the hole opened in the middle of the connecting tube 4 is adapted to the outer wall of the sleeve 10, and when in use, it is used to sleeve the connecting tube 4 on the outer wall of the sleeve 10 so that its moving direction is consistent with the direction of the sleeve 10. The provided block 6 is used to limit the movement of the connecting tube 4 along the direction of the sleeve 10, thereby fixing the position of the connecting tube 4.

[0022] Furthermore, when the gasket 3 needs to be installed at the bottom of the sleeve 10, the gasket 3 is first moved to the bottom of the sleeve 10, and then the connecting tube 4 on the top of the gasket 3 is sleeved on the outer wall of the sleeve 10, and finally the block 6 is driven by the pusher to move into the slot 5, so that the position of the connecting tube 4 is fixed by the block 6, and the position of the gasket 3 is fixed by the connecting tube 4 in the fixed position, so as to avoid the gasket 3 from falling off.

[0023] Specifically, the pushing member includes an elastic block 8 fixedly connected to the inner wall of one side of the receiving groove 7 , a clamping block 6 fixedly connected to one side of the elastic block 8 , and one end of the clamping block 6 is inserted and connected to the inside of the receiving groove 7 .

[0024] It should be noted that the elastic block 8 is made of rubber and has a deformable property. When the block 6 needs to be moved out of the slot 5, the block 6 is first pressed into the receiving slot 7, so that the elastic block 8 is squeezed and deformed, so that the block 6 is moved out of the slot 5, thereby moving the connecting tube 4 out of the sleeve 10.

[0025] Specifically, a rotating part for rotating the sleeve 10 is disposed at the top of the sleeve 10 , and a fixing piece for fixing the position of the sleeve 10 is disposed at the bottom of the sleeve 10 .

[0026] Specifically, the fixing member includes a threaded tube 9 fixedly connected to the bottom end of the sleeve 10 , the threaded tube 9 is inserted and connected to the middle of the gasket 3 , and the insulating tube 2 is inserted and connected to the bottom of the threaded tube 9 .

[0027] It should be noted that the threaded cylinder 9 is a cylinder with threads on the outer wall, and is connected to the desired fixed position through the threads.

[0028] Specifically, the gasket 3 is configured to be ring-shaped, and the threaded tube 9 is inserted and connected in the middle of the gasket 3 .

[0029] Specifically, a grounding electrode 12 is disposed at the bottom of the threaded barrel 9 , and the grounding electrode 12 is configured in an L shape.

[0030] It should be noted that the ground electrode 12 faces the combustion chamber and contacts the fuel mixture. Its function is to provide a larger discharge surface area in the spark plug, promote stronger ignition energy and improve ignition reliability. The ground electrode 12 is a part of the spark plug, which is usually a metal part surrounding the center electrode 1 and directly contacts the fuel mixture in the combustion chamber.

[0031] Specifically, the rotating member includes a hexagonal screwing block 11 fixedly connected to the top of the sleeve 10 , and the hexagonal screwing block 11 is sleeved in the middle of the insulating tube 2 .

[0032] It should be noted that the hexagonal screwing block 11 is set in a hexagonal shape. When in use, the hexagonal screwing block 11 is screwed with a hexagonal wrench, and the hexagonal screwing block 11 drives the sleeve 10 and the threaded tube 9 at the bottom of the sleeve 10 to rotate, so that the threaded tube 9 is screwed into the desired fixed position, and the connection between the bottom of the sleeve 10 and the equipment is sealed by the gasket 3.

[0033] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A spark plug with a central small electrode, comprising a central electrode (1), wherein an insulating tube (2) is sleeved in the middle of the central electrode (1), a sleeve (10) is sleeved in the middle of the insulating tube (2), and a gasket (3) is arranged at the bottom of the sleeve (10), characterized in that: The top end of the gasket (3) is fixedly connected to a connecting tube (4), the connecting tube (4) is sleeved on the outer wall of the sleeve (10), the two sides of the connecting tube (4) are symmetrically provided with card slots (5), the interior of the card slots (5) is carded with a card block (6), the two sides of the sleeve (10) are symmetrically provided with receiving grooves (7) for receiving the card block (6), and the interior of the receiving grooves (7) is provided with a pushing member for pushing the card block (6).

2. A spark plug with a central small electrode according to claim 1, characterized in that: The pushing member comprises an elastic block (8) fixedly connected to the inner wall of one side of the receiving groove (7), the clamping block (6) is fixedly connected to one side of the elastic block (8), and one end of the clamping block (6) is inserted and connected to the inside of the receiving groove (7).

3. A spark plug with a central small electrode according to claim 1, characterized in that: A rotating part for rotating the sleeve (10) is arranged at the top of the sleeve (10), and a fixing piece for fixing the position of the sleeve (10) is arranged at the bottom of the sleeve (10).

4. A spark plug with a central small electrode according to claim 3, characterized in that: The fixing member comprises a threaded tube (9) fixedly connected to the bottom end of the sleeve (10), the threaded tube (9) is inserted and connected to the middle part of the gasket (3), and the insulating tube (2) is inserted and connected to the bottom of the threaded tube (9).

5. A spark plug with a small central electrode according to claim 4, characterized in that: The gasket (3) is arranged in a ring shape, and the threaded cylinder (9) is inserted and connected in the middle of the gasket (3).

6. A spark plug with a small central electrode according to claim 4, characterized in that: A grounding electrode (12) for generating sparks with the center electrode (1) is arranged at the bottom of the threaded barrel (9), and the grounding electrode (12) is arranged in an L shape.

7. A spark plug with a small center electrode according to claim 3, characterized in that: The rotating member comprises a hexagonal screwing block (11) fixedly connected to the top end of the sleeve (10), and the hexagonal screwing block (11) is sleeved in the middle of the insulating cylinder (2).

Images