Spark plug with central electrode

Abstract

The utility model relates to the technical field of spark plugs, in particular to a spark plug with a central electrode, which comprises a wiring nut and a shell, the shell is arranged on one side of the wiring nut, a first insulator is arranged on one side of the wiring nut, a fixed shaft is arranged in the first insulator, a second insulator is arranged on one side of the fixed shaft, and the central electrode is arranged in the second insulator. A wiring screw is arranged in the shell, a side electrode is fixedly installed at the lower end of the shell, a fixing mechanism is arranged in the shell, a first clamping block is arranged in the fixing mechanism, a first spring is arranged on one side of the first clamping block, a first abutting block is arranged at one end of the first spring, and a second clamping block is arranged on the other side of the first clamping block. A second spring is arranged on one side of the second clamping block, a second abutting block is arranged at one end of the second spring, an adjusting mechanism is arranged at the lower end of the shell, an internal thread is arranged in the adjusting mechanism, an internal screw rod is arranged in the internal thread, and therefore the use stability of the device is improved.

Description

Technical Field

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

[0002] Spark plugs are important components of gasoline engine ignition systems. They can introduce high voltage electricity into the combustion chamber and make it jump over the electrode gap to generate sparks, thereby igniting the combustible mixture in the cylinder. They are mainly composed of wire nuts, insulators, wire screws, center electrodes, side electrodes and shells. The side electrodes are welded to the shells.

[0003] In this regard, China's patent application number: CN209434599U discloses a spark plug, including: a ceramic insulator, a metal shell, a gasket and a side electrode arranged outside the ceramic insulator, and a center electrode, a resistor, a terminal screw and a terminal arranged inside the ceramic insulator, and also includes a negative ion releaser, which is arranged on any one of the metal shell, the gasket or the side electrode or any combination thereof. A spark plug according to the utility model can increase the utilization rate of ignition energy to a certain extent, speed up the discharge speed of the spark plug, help reduce combustion cycle changes, improve engine torque and performance, ensure ignition success rate, and also improve fuel economy.

[0004] However, in the existing spark plug with a center electrode, since the wiring screw in the spark plug is installed in the housing, the existing device is not provided with a fixing mechanism, which may cause the wiring screw to shake in the housing and cause damage to the spark plug.

[0005] Therefore, in order to solve the above-mentioned problems, a spark plug having a center electrode is proposed. Utility Model Content

[0006] The purpose of the utility model is to provide a spark plug with a center electrode to solve the problem of the spark plug with a center electrode in the prior art mentioned in the above background technology. Since the wiring screw in the spark plug is installed in the shell, the existing device is not provided with a fixing mechanism, which may cause the wiring screw to shake in the shell and cause damage to the spark plug.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: A spark plug with a center electrode, comprising: a wiring nut and a shell, a shell is provided on one side of the wiring nut, a first insulator is provided on one side of the wiring nut, a fixed shaft is provided in the first insulator, a second insulator is provided on one side of the fixed shaft, a wiring screw is provided in the shell, and a side electrode is fixedly installed at the lower end of the shell, a fixing mechanism is provided in the shell, a first clamping block is provided in the fixing mechanism, a first spring is provided on one side of the first clamping block, a first stop block is provided at one end of the first spring, and a second clamping block is provided on the other side of the first clamping block, a second spring is provided on one side of the second clamping block, a second stop block is provided at one end of the second spring, and an adjustment mechanism is provided at the lower end of the shell, an internal thread is provided in the adjustment mechanism, and an internal screw is provided in the internal thread.

[0008] Preferably, a transmission rod is fixedly mounted on one end of the inner screw, a rotating shaft is movably mounted on one end of the transmission rod, and a retaining spring is fixedly mounted on one end of the rotating shaft.

[0009] Preferably, a central electrode is fixedly mounted on one end of the retaining spring, and the transmission rod and the rotating shaft are slidably mounted in the wiring screw, and the retaining spring and the central electrode are slidably mounted in the wiring screw.

[0010] Preferably, the first stop block is fixedly mounted on the inner wall of the shell, one end of the first spring is fixedly mounted on the first stop block, and the first clamping block is fixedly mounted on the first spring.

[0011] Preferably, the second stop block is fixedly mounted on the inner wall of the shell, one end of the second spring is fixedly mounted on the second stop block, the second clamping block is fixedly mounted on the second spring, and the wiring screw passes through the first clamping block and the second clamping block.

[0012] Preferably, the internal thread is provided in the wiring screw, one end of the wiring nut is movably connected to the internal screw via a fixed shaft, and the internal screw is movably installed in the internal thread.

[0013] Preferably, the wiring screw is movably mounted in the housing, and one end of the wiring nut is movably mounted on the wiring screw.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] 1. A fixing mechanism is provided, through which the wiring screw can be fixed, the first clamping block in the mechanism cooperates with the first spring to limit the wiring screw, and the second clamping block cooperates with the second spring to limit the other side of the wiring screw. Therefore, the first clamping block and the second clamping block cooperate with each other to fix the wiring screw, thereby improving the installation stability.

[0016] 2. An adjustment mechanism is provided, through which the center electrode can be adjusted. The inner screw is driven to rotate by the wiring nut in the mechanism, and then the transmission rod is rotated. The transmission rod drives the retaining spring through the rotating shaft, so that the retaining spring and the center electrode slide in the wiring screw, and then the center electrode can be slid and adjusted on the wiring screw, thereby improving the practicality of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the contents of the embodiments of the present invention and these drawings without paying any creative work.

[0018] Figure 1 It is a schematic diagram of the structure of the utility model;

[0019] Figure 2 It is a schematic front view of the structure of the main body of the utility model;

[0020] Figure 3 It is a schematic front cross-sectional view of the structure of the fixing mechanism of the utility model;

[0021] Figure 4 It is a schematic cross-sectional view of the structure of the regulating mechanism of the utility model.

[0022] In the figure: 1. wire nut; 2. shell; 3. first insulator; 4. fixed shaft; 5. second insulator; 6. wire screw; 7. fixing mechanism; 71. first clamping block; 72. first spring; 73. first stop block; 74. second clamping block; 75. second spring; 76. second stop block; 8. adjusting mechanism; 81. internal thread; 82. internal screw; 83. transmission rod; 84. rotating shaft; 85. retaining spring; 86. center electrode; 9. side electrode. DETAILED DESCRIPTION

[0023] 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.

[0024] See also Figure 1-4 , an embodiment provided by the utility model:

[0025] A spark plug with a center electrode comprises: a wire nut 1 and a shell 2, wherein the shell 2 is provided on one side of the wire nut 1, a first insulator 3 is provided on one side of the wire nut 1, a fixed shaft 4 is provided in the first insulator 3, a second insulator 5 is provided on one side of the fixed shaft 4, a wire screw 6 is provided in the shell 2, and a side electrode 9 is fixedly installed at the lower end of the shell 2, a fixing mechanism 7 is provided in the shell 2, a first clamping block 71 is provided in the fixing mechanism 7, a first spring 72 is provided on one side of the first clamping block 71, a first stopper 73 is provided at one end of the first spring 72, and a second clamping block 74 is provided on the other side of the first clamping block 71, a second spring 75 is provided on one side of the second clamping block 74, a second stopper 76 is provided at one end of the second spring 75, and an adjustment mechanism 8 is provided at the lower end of the shell 2, an internal thread 81 is provided in the adjustment mechanism 8, and an internal screw 82 is provided in the internal thread 81. By providing this component, the wire screw 6 can be limited and fixed by the fixing mechanism 7, and the center electrode 86 can be adjusted by the adjustment mechanism 8.

[0026] As a further feature of the present invention, a transmission rod 83 is fixedly mounted on one end of the inner screw 82, a rotating shaft 84 is movably mounted on one end of the transmission rod 83, and a retaining spring 85 is fixedly mounted on one end of the rotating shaft 84. By providing this component, the transmission rod 83 can be driven to rotate by the inner screw 82.

[0027] As a further feature of the present invention, a center electrode 86 is fixedly mounted on one end of the retaining spring 85, and the transmission rod 83 and the rotating shaft 84 are slidably mounted in the wiring screw 6. The retaining spring 85 and the center electrode 86 are slidably mounted in the wiring screw 6. By setting up this component, the center electrode 86 can be driven to slide by the retaining spring 85.

[0028] As a further feature of the present invention, the first stop block 73 is fixedly mounted on the inner wall of the shell 2, one end of the first spring 72 is fixedly mounted on the first stop block 73, and the first clamping block 71 is fixedly mounted on the first spring 72. By setting this component, the first spring 72 can be limited and fixed by the first stop block.

[0029] As a further feature of the present invention, the second stop block 76 is fixedly mounted on the inner wall of the shell 2, one end of the second spring 75 is fixedly mounted on the second stop block 76, the second clamping block 74 is fixedly mounted on the second spring 75, and the wiring screw 6 passes through the first clamping block 71 and the second clamping block 74. By setting this component, the second spring 75 can be limited and fixed by the second stop block 76.

[0030] As a further feature of the present invention, an internal thread 81 is provided in the wiring screw 6, one end of the wiring nut 1 is movably connected to the internal screw 82 via a fixed shaft 4, and the internal screw 82 is movably installed in the internal thread 81. By setting this component, the internal screw 62 can be limited by the internal thread 61.

[0031] As a further feature of the present invention, the wiring screw 6 is movably mounted in the housing 2, and one end of the wiring nut 1 is movably mounted on the wiring screw 6. By providing this component, the wiring screw 6 can be driven to move by the wiring nut 1.

[0032] Working principle: When it is necessary to use the spark plug of the center electrode, it is only necessary to drive the terminal screw 6 through the terminal nut 1 to install the terminal screw 6 in the housing 2, and then limit one side of the terminal screw 6 through the first clamping block 71 in the fixing mechanism 7. In this process, the first clamping block 71 can be limited by the first spring 72, and the other side of the terminal screw 6 can be limited by the second clamping block 74. In this process, the second spring 75 and the second stop block 76 can cooperate with each other to limit the second clamping block 74, so that the terminal screw 6 is fixed by the cooperation between the first clamping block 71 and the second clamping block 74. When it is necessary to adjust the center electrode 86, the terminal nut 1 of the adjusting mechanism 8 can be rotated to drive the inner screw 82 to rotate, so that the transmission rod 83 rotates, and the transmission rod 83 drives the retaining spring 85 to work through the rotating shaft 84, so that the retaining spring 85 drives the center electrode 86 to adjust and limit, and the work can be completed.

[0033] The above description is only a preferred embodiment of the utility model and does not limit the utility model in any form. Any ordinary technician in the industry can smoothly implement the utility model as shown in the drawings of the specification and described above. However, any equivalent changes, modifications and evolutions made by technicians familiar with the profession without departing from the scope of the technical solution of the utility model using the technical content disclosed above are all equivalent embodiments of the utility model. At the same time, any equivalent changes, modifications and evolutions made to the above embodiments based on the essential technology of the utility model are still within the protection scope of the technical solution of the utility model.

Claims

1. A spark plug having a center electrode, comprising: A wire nut (1) and a shell (2), wherein the wire nut (1) is provided with a shell (2) on one side, a first insulator (3) is provided on one side of the wire nut (1), a fixed shaft (4) is provided inside the first insulator (3), a second insulator (5) is provided on one side of the fixed shaft (4), a wire screw (6) is provided inside the shell (2), and a side electrode (9) is fixedly installed at the lower end of the shell (2), characterized in that: a fixing mechanism (7) is provided inside the shell (2), and a first clamping block (7) is provided inside the fixing mechanism (7) 1), a first spring (72) is provided on one side of the first clamping block (71), a first stopper (73) is provided on one end of the first spring (72), a second clamping block (74) is provided on the other side of the first clamping block (71), a second spring (75) is provided on one side of the second clamping block (74), a second stopper (76) is provided on one end of the second spring (75), and an adjustment mechanism (8) is provided at the lower end of the housing (2), an internal thread (81) is provided in the adjustment mechanism (8), and an internal screw (82) is provided in the internal thread (81).

2. A spark plug with a center electrode according to claim 1, characterized in that: A transmission rod (83) is fixedly mounted on one end of the inner screw rod (82), a rotating shaft (84) is movably mounted on one end of the transmission rod (83), and a retaining spring (85) is fixedly mounted on one end of the rotating shaft (84).

3. A spark plug with a center electrode according to claim 2, characterized in that: A central electrode (86) is fixedly mounted on one end of the clamping spring (85), and the transmission rod (83) and the rotating shaft (84) are slidably mounted in the wiring screw (6), and the clamping spring (85) and the central electrode (86) are slidably mounted in the wiring screw (6).

4. A spark plug with a center electrode according to claim 1, characterized in that: The first stop block (73) is fixedly mounted on the inner wall of the housing (2), one end of the first spring (72) is fixedly mounted on the first stop block (73), and the first clamping block (71) is fixedly mounted on the first spring (72).

5. A spark plug with a center electrode according to claim 1, characterized in that: The second stop block (76) is fixedly mounted on the inner wall of the housing (2), one end of the second spring (75) is fixedly mounted on the second stop block (76), the second clamping block (74) is fixedly mounted on the second spring (75), and the wiring screw (6) passes through the first clamping block (71) and the second clamping block (74).

6. A spark plug with a center electrode according to claim 1, characterized in that: The internal thread (81) is formed in the wiring screw (6), one end of the wiring nut (1) is movably connected to the internal thread (82) via a fixed shaft (4), and the internal thread (82) is movably installed in the internal thread (81).

7. A spark plug with a center electrode according to claim 1, characterized in that: The wiring screw (6) is movably mounted in the housing (2), and one end of the wiring nut (1) is movably mounted on the wiring screw (6).

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