Resistance-discharging glow plug

Abstract

The utility model provides a resistance-discharging glow plug, which relates to the technical field of glow plugs and comprises a connecting sleeve, and a glow plug main body is embedded on the surface of the inner wall of the connecting sleeve. When the preheating plug is used, the adjusting ring is pulled down, the adjusting ring extrudes the spring, then one end of the preheating plug body is inserted into the surface of the inner wall of the connecting sleeve, the preheating plug body extrudes the clamping bead, one end of the clamping bead is embedded into the adjusting groove, the adjusting ring is released, the adjusting ring is pushed by the spring to reset, and the clamping bead is extruded until the clamping bead is embedded into the limiting groove. The clamping ball is matched with the mounting hole and the adjusting ring, the glow plug body and the connecting sleeve are fixed, the sealing ring is matched with the supporting ring, the gap between the connecting sleeve and the glow plug body is filled, the sealing effect is guaranteed, when the glow plug body needs to be cleaned and maintained, the glow plug body can be taken out by conducting the operation in the reverse direction, operation is easy, and the work efficiency is improved. And a tool does not need to be used for rotating and dismounting circle by circle, so that the overhauling efficiency is effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of glow plugs, in particular to a glow plug with resistance release. Background Art

[0002] A "glow plug with resistance release" is a common component in diesel engines, usually referred to as a "glow plug" or "glow plug". It plays a heating role when starting a diesel engine, making it easier for the air-fuel mixture to ignite, thus helping the engine to start smoothly under cold conditions. The glow plug heats the air in the combustion chamber to a high enough temperature so that diesel can auto-ignite, which is particularly important in cold weather because low temperatures make it difficult for diesel to ignite. The glow plug consists of an electrothermal element that quickly heats up when an electric current passes through it. This heat is transferred to the air in the combustion chamber, raising its temperature and thus improving the starting performance. There are various types of glow plugs, including ceramic glow plugs and metal glow plugs. Different types of glow plugs vary in durability, heating speed, and efficiency. Glow plugs need to be inspected and maintained regularly. If a glow plug is damaged or malfunctioning, it can cause the engine to start difficultly or fail to start. Therefore, regular inspection and replacement when necessary are very important. When installing a glow plug, care needs to be taken to ensure its correct connection and secure installation. Incorrect installation may result in poor contact or damage to the glow plug.

[0003] However, in the prior art, the glow plug is generally fixed to the engine through the threads provided on its outer surface. When the glow plug needs to be repaired or replaced, professional tools such as wrenches are required to unscrew the glow plug one turn at a time, which requires a lot of manpower and time, seriously affecting the efficiency of repairing and replacing the glow plug, and there are limitations. Summary of the Utility Model

[0004] The purpose of the utility model is to solve the technical problem that in the prior art, the glow plug is generally fixed to the engine through the threads provided on its outer surface. When the glow plug needs to be repaired or replaced, professional tools such as wrenches are required to unscrew the glow plug one turn at a time, which requires a lot of manpower and time, seriously affecting the efficiency of repairing and replacing the glow plug, and there are limitations, and to propose a glow plug with resistance release.

[0005] To achieve the above object, the present utility model adopts the following technical solution: A resistance preheating plug, comprising a connecting sleeve, wherein a preheating plug body is embedded on the inner wall surface of the connecting sleeve, a nut is fixedly connected to the outer surface of the connecting sleeve, a limiting groove is opened on the outer surface of the preheating plug body, a clamping bead is embedded on the inner wall surface of the limiting groove, a limiting ring is fixedly connected to the outer surface of the connecting sleeve near one end, an adjusting ring is sleeved on the outer surface of the connecting sleeve, an adjusting groove is opened on the inner wall surface of the adjusting ring near one end, an installation hole is opened on the outer surface of the connecting sleeve, the outer surface of the clamping bead is embedded inside the installation hole, a spring is fixedly connected to one side surface of the adjusting ring, and one end of the spring is fixedly connected to the outer surface of the nut. A sealing ring is sleeved on the outer surface of the preheating plug body.

[0006] Further, a support ring is fixedly connected to the inner wall surface of the connecting sleeve near the other end, and one side surface of the sealing ring is attached to one side surface of the support ring.

[0007] Further, a plurality of grooves are opened on the outer surface of the adjusting ring, and the plurality of grooves are equally spaced.

[0008] Further, the inner wall surface of the spring is sleeved on the outer surface of the connecting sleeve.

[0009] Further, the connecting sleeve, the nut and the limiting ring are integrally formed.

[0010] Further, the installation hole is a stepped hole.

[0011] Compared with the prior art, the advantages and positive effects of the present utility model are as follows:

[0012] 1. In the present utility model, during use, pull down the adjusting ring, the adjusting ring squeezes the spring, and the compression stroke of the spring absorbs kinetic energy, so that the adjusting groove is aligned with the installation hole. Then insert one end of the preheating plug body into the inner wall surface of the connecting sleeve. The preheating plug body squeezes the clamping bead, so that one end of the clamping bead is embedded inside the adjusting groove until the sealing ring is attached to one side surface of the support ring. Release the adjusting ring, and the adjusting ring resets under the push of the spring, squeezing the clamping bead, so that the clamping bead moves inside the installation hole until it is embedded inside the limiting groove. The clamping bead cooperates with the installation hole and the adjusting ring to fix the preheating plug body and the connecting sleeve. The sealing ring cooperates with the support ring to fill the gap between the connecting sleeve and the preheating plug body to ensure the sealing effect. When it is necessary to clean and repair the preheating plug body, perform the reverse operation above, and the preheating plug body can be taken out. The operation is simple, and there is no need to use tools to rotate and disassemble one by one, effectively improving the efficiency during maintenance.

[0013] 2. In the present utility model, multiple grooves increase the friction between the fingers and the adjusting ring, preventing hand slippage when operating the movement of the adjusting ring, improving the user experience. The spring is sleeved on the outer surface of the connecting sleeve, and the connecting sleeve restricts the stroke of the spring, preventing the spring from bending and deforming, ensuring the normal operation of the components. The diameter of the end of the mounting hole far from the adjusting ring is smaller than the diameter of the detent ball, preventing the detent ball from falling off and improving the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 FIG. is a three-dimensional structural schematic diagram of a resistance preheating plug provided by the present utility model;

[0015] Figure 2 FIG. is a sectional three-dimensional structural schematic diagram of a resistance preheating plug provided by the present utility model;

[0016] Figure 3 FIG. is a three-dimensional structural schematic diagram of a sealing ring of a resistance preheating plug provided by the present utility model;

[0017] Figure 4 FIG. is a bottom three-dimensional structural schematic diagram of a resistance preheating plug provided by the present utility model.

[0018] Legend: 1. Connecting sleeve; 2. Preheating plug body; 3. Limiting ring; 4. Adjusting ring; 5. Groove; 6. Spring; 7. Nut; 8. Support ring; 9. Sealing ring; 10. Adjusting groove; 11. Mounting hole; 12. Detent ball; 13. Limiting groove. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts shall fall within the protection scope of the present utility model.

[0020] Embodiment 1

[0021] As Figures 1-4As shown in the figure, the present utility model provides a technical solution: a resistance release preheating plug, which includes a connecting sleeve 1. The inner wall surface of the connecting sleeve 1 is embedded with a preheating plug body 2. The outer surface of the connecting sleeve 1 is fixedly connected with a nut 7. A limiting groove 13 is opened on the outer surface of the preheating plug body 2. A clamping bead 12 is embedded on the inner wall surface of the limiting groove 13. A limiting ring 3 is fixedly connected to the outer surface of the connecting sleeve 1 near one end. An adjusting ring 4 is sleeved on the outer surface of the connecting sleeve 1. An adjusting groove 10 is opened on the inner wall surface of the adjusting ring 4 near one end. An installation hole 11 is opened on the outer surface of the connecting sleeve 1. The outer surface of the clamping bead 12 is embedded inside the installation hole 11. A spring 6 is fixedly connected to one side surface of the adjusting ring 4. One end of the spring 6 is fixedly connected to the outer surface of the nut 7. A sealing ring 9 is sleeved on the outer surface of the preheating plug body 2. A support ring 8 is fixedly connected to the inner wall surface of the connecting sleeve 1 near the other end. One side surface of the sealing ring 9 is attached to one side surface of the support ring 8.

[0022] In this embodiment, during use, the nut 7 is rotated by a wrench to fixedly install the connecting sleeve 1 on the device through threads. Then, the adjusting ring 4 is pulled downwards. The adjusting ring 4 compresses the spring 6, and the compression stroke of the spring 6 absorbs kinetic energy, aligning the adjusting groove 10 with the installation hole 11. Then, one end of the preheating plug body 2 is inserted into the inner wall surface of the connecting sleeve 1. The preheating plug body 2 presses the clamping bead 12, causing one end of the clamping bead 12 to be embedded inside the adjusting groove 10 until the sealing ring 9 is attached to one side surface of the support ring 8. The adjusting ring 4 is released, and the adjusting ring 4 resets under the push of the spring 6, pressing the clamping bead 12, causing the clamping bead 12 to move inside the installation hole 11 until it is embedded inside the limiting groove 13. The clamping bead 12 cooperates with the installation hole 11 and the adjusting ring 4 to fix the preheating plug body 2 and the connecting sleeve 1. The sealing ring 9 cooperates with the support ring 8 to fill the gap between the connecting sleeve 1 and the preheating plug body 2, ensuring the sealing effect. When the preheating plug body 2 needs to be cleaned and repaired, reverse the above operations to remove the preheating plug body 2. The operation is simple and does not require using tools to rotate and disassemble one by one, effectively improving the efficiency during maintenance.

[0023] Embodiment 2

[0024] As Figures 1-4 shown, a plurality of grooves 5 are opened on the outer surface of the adjusting ring 4, and the plurality of grooves 5 are equidistantly distributed. The inner wall surface of the spring 6 is sleeved on the outer surface of the connecting sleeve 1. The connecting sleeve 1, the nut 7 and the limiting ring 3 are integrally formed. The installation hole 11 is a stepped hole.

[0025] In this embodiment, multiple grooves 5 increase the friction between the finger and the adjusting ring 4, preventing hand slippage when operating the adjusting ring 4 to move, and improving the user experience. The spring 6 is sleeved on the outer surface of the connecting sleeve 1. The connecting sleeve 1 limits the stroke of the spring 6, preventing the spring 6 from bending and deforming, and ensuring the normal operation of the components. The diameter of the end of the mounting hole 11 away from the adjusting ring 4 is smaller than the diameter of the ball 12, preventing the ball 12 from falling off and improving the user experience.

[0026] Working principle: As Figures 1-4 shown, when in use, rotate the nut 7 through a wrench to fixedly install the connecting sleeve 1 to the device through threads. Then pull down the adjusting ring 4. The adjusting ring 4 squeezes the spring 6, and the spring 6 compresses its stroke to absorb kinetic energy, aligning the adjusting groove 10 with the mounting hole 11. Then insert one end of the glow plug body 2 into the inner wall surface of the connecting sleeve 1. The glow plug body 2 squeezes the ball 12, causing one end of the ball 12 to embed into the inside of the adjusting groove 10 until the sealing ring 9 fits against one side surface of the support ring 8. Release the adjusting ring 4, and the adjusting ring 4 resets under the push of the spring 6, squeezing the ball 12, causing the ball 12 to move inside the mounting hole 11 until it embeds into the inside of the limiting groove 13. The ball 12 cooperates with the mounting hole 11 and the adjusting ring 4 to fix the glow plug body 2 to the connecting sleeve 1. The sealing ring 9 cooperates with the support ring 8 to fill the gap between the connecting sleeve 1 and the glow plug body 2. Multiple grooves 5 increase the friction between the finger and the adjusting ring 4, preventing hand slippage when operating the adjusting ring 4 to move, and improving the user experience. The spring 6 is sleeved on the outer surface of the connecting sleeve 1. The connecting sleeve 1 limits the stroke of the spring 6, preventing the spring 6 from bending and deforming. The diameter of the end of the mounting hole 11 away from the adjusting ring 4 is smaller than the diameter of the ball 12, preventing the ball 12 from falling off.

[0027] The above is only a preferred embodiment of the present invention, and it is not a limitation of the present invention in other forms. Any person skilled in the art may use the disclosed technical content to make changes or modifications into equivalent embodiments with equivalent changes and apply them to other fields. However, as long as it does not depart from the technical solution content of the present invention, any simple modification, equivalent change, and modification made to the above embodiments based on the technical essence of the present invention still fall within the protection scope of the technical solution of the present invention.

Claims

1. A glow plug with resistance and preheating function, comprising a connecting sleeve (1), characterized in that: The inner wall surface of the connecting sleeve (1) is embedded with a glow plug body (2). The outer surface of the connecting sleeve (1) is fixedly connected with a nut (7). The outer surface of the glow plug body (2) is provided with a limiting groove (13). The inner wall surface of the limiting groove (13) is embedded with a detent ball (12). The outer surface of the connecting sleeve (1) near one end is fixedly connected with a limiting ring (3). The outer surface of the connecting sleeve (1) is sleeved with an adjusting ring (4). The inner wall surface of the adjusting ring (4) near one end is provided with an adjusting groove (10). The outer surface of the connecting sleeve (1) is provided with a mounting hole (11). The outer surface of the detent ball (12) is embedded in the interior of the mounting hole (11). One side surface of the adjusting ring (4) is fixedly connected with a spring (6). One end of the spring (6) is fixedly connected to the outer surface of the nut (7). The outer surface of the glow plug body (2) is sleeved with a sealing ring (9).

2. The anti-blocking preheating plug according to claim 1, characterized in that: The inner wall surface of the connecting sleeve (1) near the other end is fixedly connected with a support ring (8). One side surface of the sealing ring (9) is in contact with one side surface of the support ring (8).

3. The anti-blocking preheating plug according to claim 2, characterized in that: The outer surface of the adjusting ring (4) is provided with a plurality of grooves (5). The plurality of grooves (5) are equidistantly distributed.

4. The anti-blocking preheating plug according to claim 3, characterized in that: The inner wall surface of the spring (6) is sleeved on the outer surface of the connecting sleeve (1).

5. The anti-blocking preheating plug according to claim 4, wherein: The connecting sleeve (1), the nut (7) and the limiting ring (3) are integrally formed.

6. The anti-blocking preheating plug according to claim 1, characterized in that: The mounting hole (11) is a stepped hole.

Images