A tool for removing the lower spark plug sheath

Abstract

This utility model discloses a tool for removing spark plug lower sleeves, relating to the field of automotive repair tool technology. It includes a main rod, a fixed head welded to the left side of the main rod, and a tail sleeve welded to the right side of the main rod. An externally threaded core rod is inserted into the right side of the tail sleeve. A pre-grooved slot is formed on the left side of the top of the externally threaded core rod. A replaceable disassembly assembly with a snap-fit ​​is provided on the left side of the fixed head. This spark plug lower sleeve removal tool comprises a main rod, a fixed head, a spline groove, a magnetic rod, an externally protruding snap block, a steel outer positioning ring, a steel inner positioning ring, and a spline ridge. In use, the externally protruding snap block, the steel outer positioning ring, the steel inner positioning ring, and the spline ridge constitute the main body of the snap-fit ​​head. The steel outer positioning ring is inserted along the magnetic rod, and the steel inner positioning ring and the spline ridge are fully pushed into the spline groove, achieving the function of easily replacing the snap-fit ​​head and solving the problem of devices lacking this function.

Description

Technical Field

[0001] This utility model relates to the field of automotive repair tool technology, specifically a tool for removing the lower cover of a spark plug. Background Technology

[0002] Spark plugs are crucial components of a gasoline engine's ignition system. They introduce high-voltage electricity into the combustion chamber, causing it to jump across the electrode gap and generate a spark, thus igniting the combustible mixture in the cylinder. The spark plug's mounting location has a lower protective sleeve, usually made of metal, which protects the bottom of the spark plug and serves as both a mounting base and an airtight seal.

[0003] Removing the lower spark plug sleeve requires a special removal wrench, usually a T-shaped wrench. The wrench has four protrusions at the tip that align with the four slots on the top of the lower spark plug sleeve, allowing it to be removed by rotation. However, this method has some functional limitations and room for improvement. For example, the slot specifications for the lower spark plug sleeves of engines from three manufacturers—Shangchai, Yuchai, and Weichai—are different, requiring three different sets of wrenches to cover various application scenarios, which increases costs. Furthermore, it lacks a convenient function for replacing the locking clip.

[0004] Now, a novel tool for removing the lower spark plug sheath is proposed to solve the above problems. Utility Model Content

[0005] The purpose of this utility model is to provide a tool for removing the lower sleeve of a spark plug, so as to solve the problem mentioned in the background art that it does not have the function of conveniently replacing the clip.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a tool for disassembling spark plug lower sheaths, comprising a main rod, a fixing head welded to the left side of the main rod, a tail sleeve welded to the right side of the main rod, an externally threaded core rod inserted into the right side of the tail sleeve, a pre-grooved slot on the left side of the top of the externally threaded core rod, a foam liner glued inside the pre-grooved slot, two sets of spare clips horizontally placed inside the foam liner, a first through hole on the right side of the top of the externally threaded core rod, a ring magnet fixedly connected inside the first through hole, second through holes at the upper and lower ends of the tail sleeve, a rod storage groove inside the main rod, a gripping rod inserted into the second through hole, a magnet block fixedly connected to the left side of the externally threaded core rod, and a replaceable disassembly component with a clip on the left side of the fixing head.

[0007] The disassembly assembly includes a spline groove, which is located on the left side of the fixing head. A magnetic suction rod is fixedly connected to the right side inside the spline groove. A steel outer positioning ring is sleeved on the outside of the magnetic suction rod. Four sets of protruding locking blocks are welded to the left side of the steel outer positioning ring. A steel inner positioning ring is welded to the right side of the steel outer positioning ring. Multiple sets of spline ridges are provided on the outside of the steel inner positioning ring.

[0008] As a further technical solution of this utility model, the horizontal center lines of the main rod, the fixing head, and the magnetic rod coincide, and the shape and size inside the spline groove are adapted to the shape and size outside the spline edge.

[0009] As a further technical solution of this utility model, the inner diameters of the outer steel positioning ring and the inner steel positioning ring are the same, and the inner diameters of the outer steel positioning ring and the inner steel positioning ring are consistent with the outer diameter of the magnetic rod.

[0010] As a further technical solution of this utility model, the left side of the steel outer positioning ring and the right side of the fixing head are tightly fitted together, and the right side of the steel inner positioning ring, the spline edge, and the inside right side of the spline groove are tightly fitted together.

[0011] As a further technical solution of this utility model, the external thread of the external threaded core rod matches the internal thread of the tail sleeve, and the shape and size of the foam liner inside matches the shape and size of the spare clip outside.

[0012] As a further technical solution of this utility model, the positions and dimensions of the annular magnet and the second through hole correspond one-to-one, and the inner diameter of the annular magnet, the second through hole, and the rod storage groove are the same as the outer diameter of the gripping rod.

[0013] Compared with the prior art, the beneficial effects of this utility model are: the tool for removing the lower spark plug cover not only facilitates the replacement of the clip, but also facilitates the storage of the clip and the rod.

[0014] (1) The device is equipped with a main rod, a fixed head, a spline groove, a magnetic rod, an externally protruding clip, a steel external positioning ring, a steel internal positioning ring, and a spline ridge. When using it, select the corresponding specification clip according to the engine model. The externally protruding clip, the steel external positioning ring, the steel internal positioning ring, and the spline ridge constitute the main body of the clip. Slide the steel external positioning ring along the magnetic rod. After the steel internal positioning ring and the spline ridge are fully pushed into the spline groove, the fixed head can be inserted into the installation hole of the spark plug. The four sets of externally protruding clips are inserted into the four slots at the top of the spark plug lower sleeve. Grasp the gripping rod and rotate it to loosen and unscrew it. The magnetic rod can prevent the clip from slipping out and at the same time attract the lower sleeve so that it can be taken out after disassembly, thus realizing the function of easy clip replacement.

[0015] (2) By setting a tail sleeve, external threaded core rod, pre-grooving, foam liner and spare clips, when in use, there are a total of three sets of clips, including the front clips and spare clips. The three sets are of different models. One set is in use and the two sets of spare clips are inserted into the foam liner in the pre-grooving. The external threaded core rod is screwed in along the inside of the tail sleeve to complete the storage, thus realizing the function of easy storage of clips.

[0016] (3) By setting a first through hole, an annular magnet, a second through hole, a rod storage groove, a gripping rod and a magnet block, when in use, the gripping rod is used as a force-generating component and is directly inserted into the second through hole. The gripping rod passes through the first through hole and the second through hole. The annular magnet inside the first through hole attracts the gripping rod, making it less likely to slide. When the gripping rod is not in use, it is directly inserted into the rod storage groove. The magnet block at the end of the external threaded core rod can attract and pull the gripping rod out of the rod storage groove, thus realizing the function of conveniently storing rod parts. Attached Figure Description

[0017] Figure 1 This is a front view structural diagram of the present utility model;

[0018] Figure 2 This is a top view cross-sectional structural diagram of the main rod of this utility model;

[0019] Figure 3 This is a side view enlarged structural diagram of the fixed head of this utility model;

[0020] Figure 4 This is a side view enlarged structural schematic diagram of the steel outer positioning ring of this utility model;

[0021] Figure 5 This is a top-view enlarged structural diagram of the external threaded core rod of this utility model.

[0022] In the diagram: 1. Main rod; 2. Fixing head; 3. Spline groove; 4. Magnetic rod; 5. Outer protruding locking block; 6. Steel outer positioning ring; 7. Steel inner positioning ring; 8. Spline ridge; 9. Tail sleeve; 10. Externally threaded core rod; 11. Pre-grooved; 12. Foam liner; 13. Spare locking head; 14. First through hole; 15. Ring magnet; 16. Second through hole; 17. Rod storage slot; 18. Grip rod; 19. Magnetic block. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Example: Please refer to Figure 1-5 A tool for removing the lower sleeve of a spark plug includes a main rod 1, a fixing head 2 welded to the left side of the main rod 1, a tail sleeve 9 welded to the right side of the main rod 1, an externally threaded core rod 10 inserted into the right side of the tail sleeve 9, and a replaceable disassembly component with a bayonet on the left side of the fixing head 2.

[0025] Please see Figure 1-5 A tool for removing the lower cover of a spark plug also includes a disassembly assembly. The disassembly assembly includes a spline groove 3, which is located on the left side of the fixing head 2. A magnetic rod 4 is fixedly connected to the right side inside the spline groove 3. A steel outer positioning ring 6 is sleeved on the outside of the magnetic rod 4. Four sets of protruding locking blocks 5 are welded to the left side of the steel outer positioning ring 6. A steel inner positioning ring 7 is welded to the right side of the steel outer positioning ring 6. Multiple sets of spline ridges 8 are provided on the outside of the steel inner positioning ring 7.

[0026] The horizontal center lines of the main rod 1, the fixing head 2, and the magnetic rod 4 coincide. The shape and size inside the spline groove 3 match the shape and size outside the spline ridge 8. The inner diameters of the steel outer positioning ring 6 and the steel inner positioning ring 7 are the same. The inner diameters of the steel outer positioning ring 6 and the steel inner positioning ring 7 match the outer diameter of the magnetic rod 4. The left side of the steel outer positioning ring 6 and the right side of the fixing head 2 fit tightly together. The right side of the steel inner positioning ring 7 and the spline ridge 8 fits tightly together with the right side inside the spline groove 3, which facilitates the replacement of the clamp.

[0027] Specifically, such as Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the main body of the jack head consists of the outward protruding locking block 5, the steel outer positioning ring 6, the steel inner positioning ring 7, and the spline ridge 8. After the steel outer positioning ring 6 is inserted along the magnetic rod 4, and the steel inner positioning ring 7 and the spline ridge 8 are fully pushed into the spline groove 3, the jack head 2 can be fixed into the installation hole of the spark plug. The four sets of outward protruding locking blocks 5 are inserted into the four slots at the top of the spark plug lower cover. By grasping the gripping rod 18 and rotating it, it can be loosened and unscrewed. The magnetic rod 4 can prevent the jack head from slipping out and at the same time attract the lower cover so that it can be taken out after disassembly.

[0028] A pre-grooved slot 11 is provided on the left side of the top of the external threaded core rod 10. A foam liner 12 is glued inside the pre-grooved slot 11. Two sets of spare clips 13 are horizontally placed inside the foam liner 12. The external threads of the external threaded core rod 10 match the internal threads of the tail sleeve 9. The shape and size of the inside of the foam liner 12 are compatible with the external shape and size of the spare clips 13, which facilitates the storage of the clips.

[0029] Specifically, such as Figure 2 and Figure 5As shown, there are three sets of clips in total, including the front clip and the spare clip 13. The three sets are of different models. One set is in use, and the two sets of spare clips 13 are inserted into the foam liner 12 in the pre-grooved slot 11. The external threaded core rod 10 is screwed in along the inside of the tail sleeve 9 to complete the storage.

[0030] The top right side of the external threaded core rod 10 has a first through hole 14, and a ring magnet 15 is fixedly connected inside the first through hole 14. The upper and lower ends of the tail sleeve 9 have second through holes 16 respectively. The inside of the main rod 1 has a rod storage groove 17. A gripping rod 18 is inserted into the inside of the second through hole 16. A magnet block 19 is fixedly connected to the left side of the external threaded core rod 10. The positions and dimensions of the ring magnet 15 and the second through hole 16 correspond one-to-one. The inner diameter of the ring magnet 15, the second through hole 16, and the rod storage groove 17 is the same as the outer diameter of the gripping rod 18, which facilitates the storage of the rod.

[0031] Specifically, such as Figure 2 and Figure 5 As shown, the gripping rod 18, as a force-generating component, is directly inserted into the second through hole 16. The gripping rod 18 passes through the first through hole 14 and the second through hole 16. The annular magnet 15 inside the first through hole 14 attracts the gripping rod 18, making it less likely to slip. When the gripping rod 18 is not in use, it is directly inserted into the rod storage slot 17. The magnet block 19 at the end of the external threaded core rod 10 can attract and pull the gripping rod 18 out of the rod storage slot 17.

[0032] Working Principle: In use, firstly, select the appropriate chuck size according to the engine model. The main body of the chuck consists of the outward-protruding chuck block 5, the steel outer positioning ring 6, the steel inner positioning ring 7, and the spline ridge 8. Insert the steel outer positioning ring 6 along the magnetic rod 4. After the steel inner positioning ring 7 and spline ridge 8 are fully pushed into the spline groove 3, the head 2 can be fixed into the spark plug mounting hole. The four sets of outward-protruding chuck blocks 5 are inserted into the four slots at the top of the spark plug lower sleeve. Grasp the gripping rod 18 and rotate it to loosen and unscrew it. The magnetic rod 4 prevents the chuck from slipping out and simultaneously attracts the lower sleeve, allowing it to be removed after disassembly. There are three sets of chucks in total: the front chuck and the spare chuck 13. These three sets are of different models. One set is in use, and the two spare chucks 13 are inserted into the foam liner 12 within the pre-cut groove 11. Screw the externally threaded core rod 10 along the inside of the tail sleeve 9 to complete the storage. The gripping rod 18 serves as a force-generating component and is directly inserted into the second through hole 16. The gripping rod 18 passes through the first through hole 14 and the second through hole 16. The annular magnet 15 inside the first through hole 14 attracts the gripping rod 18, making it less prone to slipping. When the gripping rod 18 is not in use, it is directly inserted into the rod storage slot 17. The magnet block 19 at the end of the external threaded core rod 10 can attract and pull the gripping rod 18 out of the rod storage slot 17.

[0033] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A tool for removing a lower boot of a spark plug, comprising a main rod (1), characterized in that: A fixing head (2) is welded to the left side of the main rod (1), and a tail sleeve (9) is welded to the right side of the main rod (1). An external threaded core rod (10) is inserted into the right side of the tail sleeve (9). A pre-grooved slot (11) is opened on the left side of the top of the external threaded core rod (10). A foam liner (12) is glued inside the pre-grooved slot (11). Two sets of spare clips (13) are horizontally placed inside the foam liner (12). The right side of the top of the external threaded core rod (10) is opened... A first through hole (14) is provided, and a ring magnet (15) is fixedly connected inside the first through hole (14). A second through hole (16) is provided at the upper and lower ends of the tail sleeve (9). A rod storage groove (17) is provided inside the main rod (1). A gripping rod (18) is inserted into the second through hole (16). A magnet block (19) is fixedly connected to the left side of the external threaded core rod (10). A replaceable disassembly component with a bayonet is provided on the left side of the fixing head (2). The disassembly assembly includes a spline groove (3), which is located on the left side of the fixing head (2). A magnetic suction rod (4) is fixedly connected to the right side inside the spline groove (3). A steel outer positioning ring (6) is sleeved on the outside of the magnetic suction rod (4). Four sets of protruding locking blocks (5) are welded to the left side of the steel outer positioning ring (6). A steel inner positioning ring (7) is welded to the right side of the steel outer positioning ring (6). Multiple sets of spline ridges (8) are provided on the outside of the steel inner positioning ring (7).

2. The sheath tool of claim 1, wherein: The horizontal center lines of the main rod (1), the fixing head (2), and the magnetic stick (4) coincide, and the shape and size inside the spline groove (3) are compatible with the shape and size outside the spline edge (8).

3. The sheath tool of claim 1, wherein: The inner diameters of the outer steel positioning ring (6) and the inner steel positioning ring (7) are the same, and the inner diameters of the outer steel positioning ring (6) and the inner steel positioning ring (7) are consistent with the outer diameter of the magnetic rod (4).

4. The sheath tool of claim 1, wherein: The left side of the steel outer positioning ring (6) and the right side of the fixing head (2) are closely fitted together, and the right side of the steel inner positioning ring (7), the spline ridge (8) and the right side of the inside of the spline groove (3) are closely fitted together.

5. The sheath tool of claim 1, wherein: The external thread of the external threaded core rod (10) matches the internal thread of the tail sleeve (9), and the internal shape and size of the foam liner (12) are compatible with the external shape and size of the spare clip (13).

6. The sheath tool of claim 1, wherein: The positions and dimensions of the annular magnet (15) and the second through hole (16) correspond one-to-one. The inner diameter of the annular magnet (15), the second through hole (16), the rod storage groove (17) and the outer diameter of the gripping rod (18) are the same.

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