A gasoline engine compression type fuel injector dismounting tool

Abstract

This utility model discloses a disassembly fixture for a gasoline engine press-fit injector, relating to the field of injectors. The disassembly fixture includes a pull-out unit, a front-end locking unit, and an injector body. When inserting or removing the injector body, the pull-out unit is connected to the front-end locking unit. The pull-out unit, in conjunction with the front-end locking unit, connects to the injector body. Pulling the pull-out unit moves the front-end locking unit, causing it to pull the injector body towards the fixture's axis. This forces the injector body along the axis, disassembling the injector connector within the injector body. This ensures the force on the injector connector is directed along the axis, eliminating the risk of damage to the injector body and achieving effective disassembly.

Description

Technical Field

[0001] This utility model relates to the field of fuel injector technology, specifically a disassembly tool for a gasoline engine pressure-type fuel injector. Background Technology

[0002] The fuel injector is the core component of the fuel injection system, and its function, structure, and working principle are crucial to engine performance.

[0003] After prolonged use, fuel injectors may experience problems such as nozzle blockage, needle valve sticking, leakage, and solenoid valve malfunction. When fuel injectors need to be repaired or replaced, they must be disassembled and their internal parts inspected.

[0004] Currently, the traditional disassembly process uses pliers or screwdrivers to pull out the injector connector. However, when using pliers or screwdrivers, it is impossible to ensure that the force direction is the same as that of the injector connector, which will lead to uneven force during the pull-out process, resulting in force in other directions and easily causing damage to the injector connector and injector body. In order to solve the above problems, this application proposes a gasoline engine pressure-type injector disassembly fixture. During the injector disassembly process, by using this fixture, the injector is subjected to force along the axial direction, eliminating the risk of injector damage and thus achieving effective disassembly of the injector. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a gasoline engine pressure-type fuel injector disassembly fixture. This solves the problem that when disassembling the fuel injector, pulling it out with pliers or screwdrivers cannot guarantee that the direction of force is the same as that of the fuel injector connector. This can lead to uneven force during removal, resulting in force in other directions and potentially damaging the fuel injector connector and the fuel injector body.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a disassembly fixture for a gasoline engine pressure-type fuel injector, comprising:

[0007] The drawing unit is used to ensure outward drawing in the direction of the tooling axis;

[0008] A front locking unit is connected to a pulling unit, the pulling unit being used to pull the front locking unit to move;

[0009] The injector body is snapped into a front locking unit, which is used to lock the injector body and facilitate the plugging and unplugging of the injector connector in the injector body.

[0010] When the injector body is inserted or removed, the pulling unit, together with the front locking unit, is connected to the injector body. The pulling unit, together with the front locking unit, pulls the injector body towards the tooling axis, so that the injector body is subjected to force along the axis.

[0011] Preferably, the pulling unit includes a pull plate rod, and the outer peripheral wall of the pull plate rod is provided with a tail-end pulling hammer. The tail-end pulling hammer is easy to hold. A sliding groove is provided on the outer peripheral wall of the pull plate rod, and the tail-end pulling hammer is slidably connected to the inner wall of the sliding groove. The sliding groove is used to limit the sliding stability of the tail-end pulling hammer.

[0012] Preferably, the end of the pull plate rod is provided with a pull plate seat, which facilitates the movement of the pull plate rod by pulling it.

[0013] Preferably, the end of the pull plate rod away from the pull plate seat has a threaded groove, which is used for the installation of the pulling unit and the front locking unit.

[0014] Preferably, the front locking unit includes a mounting base, one end of which is provided with a connecting threaded rod, which is threadedly connected to the inner wall of the threaded groove, and the other end of the mounting base is fixedly connected to a connecting base, and the mounting base is provided with a locking component through the connecting base.

[0015] Preferably, the locking assembly includes:

[0016] The first fixed seat has one end fixedly connected to the connecting seat;

[0017] The snap-fit ​​tab is located in the first fixing seat;

[0018] A connecting block, which is fixedly connected to one end of a snap-fit ​​piece, is slidably connected in a first fixed seat;

[0019] A locking block, which is fixedly connected to the other end of a locking piece, is used to lock the injector body.

[0020] Preferably, a guide groove is provided on the inner wall of the first fixing seat, and the connecting block is slidably connected to the inner wall of the guide groove. The guide groove is used to define the sliding path of the connecting block, the snap-fit ​​piece, and the snap-fit ​​block.

[0021] Preferably, a second fixed seat is fixedly connected to the side of the first fixed seat away from the connecting seat, and an adjusting block is fixedly connected to the end of the second fixed seat.

[0022] Preferably, a nut seat is threaded onto the inner wall of the adjusting block, and the nut seat is rotatably connected to the inner wall of the connecting block.

[0023] Preferably, the injector body has a groove, and the inner wall of the groove fits against the locking block.

[0024] This utility model discloses a disassembly fixture for a gasoline engine pressure-type fuel injector, which has the following beneficial effects:

[0025] This gasoline engine press-type fuel injector disassembly fixture, when removing and inserting the fuel injector body, first installs the front locking unit on the outside of the fuel injector body. Then, connects the pull unit to the front locking unit. The pull unit, in conjunction with the front locking unit, connects to the fuel injector body. Pulling the pull unit moves the front locking unit, and with the help of the pull unit, the front locking unit pulls the fuel injector body towards the fixture's axis. This causes the fuel injector body to be subjected to force along the axis, disassembling the fuel injector connector in the fuel injector body. This ensures that the force on the fuel injector connector is in the axial direction, eliminating the risk of damage to the fuel injector body, thus achieving effective disassembly of the fuel injector body. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of the overall structure of this embodiment;

[0028] Figure 2 This is a schematic diagram of the drawing unit structure in this embodiment;

[0029] Figure 3 This is a schematic diagram of the front locking unit structure in this embodiment;

[0030] Figure 4 This is a schematic diagram of the locking assembly structure in this embodiment;

[0031] Figure 5 This is a schematic diagram of the main structure of the injector in this embodiment.

[0032] In the diagram: 1. Pulling unit; 11. Pulling rod; 12. Pulling plate seat; 13. Tail-end pulling hammer; 14. Sliding groove; 15. Threaded groove; 2. Front locking unit; 21. Mounting seat; 22. Connecting threaded rod; 23. Connecting seat; 24. Locking assembly; 241. First fixed seat; 242. Snap-fit ​​piece; 243. Connecting block; 244. Snap-fit ​​block; 245. Guide groove; 246. Second fixed seat; 247. Adjusting block; 248. Nut seat; 3. Injector body; 31. Groove. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments of this utility model are described clearly and completely. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0034] This application provides a disassembly fixture for a gasoline engine pressure-type fuel injector. It solves the problem that when disassembling the fuel injector using pliers or screwdrivers, the force direction cannot be guaranteed to be the same as the injector connector, leading to uneven force distribution and potential damage to the injector connector and body. The new fixture addresses this issue by first installing the front locking unit 2 on the outside of the injector body 3 before pulling the pull unit 1 to the front locking unit 3. When the tightening unit 2 is connected, the pulling unit 1, in conjunction with the front locking unit 2, is connected to the injector body 3. Then, by pulling the pulling unit 1, the front locking unit 2 is moved. With the cooperation of the pulling unit 1, the front locking unit 2 pulls the injector body 3 towards the tooling axis, so that the injector body 3 is subjected to force along the axis, thus disassembling the injector connector in the injector body 3. This ensures that the force on the injector connector is in the axis direction, eliminating the risk of damage to the injector body 3, thereby achieving effective disassembly of the injector body 3.

[0035] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0036] This utility model discloses a disassembly tool for a gasoline engine pressure injector.

[0037] Example 1:

[0038] According to the appendix Figure 1-5 As shown, it includes:

[0039] Pulling unit 1, which is used to ensure outward pulling in the direction of the tooling axis;

[0040] The front locking unit 2 is connected to the pulling unit 1, and the pulling unit 1 is used to pull the front locking unit 2 to move.

[0041] The injector body 3 is snapped into the front locking unit 2. The front locking unit 2 is used to lock the injector body 3, which facilitates the plugging and unplugging of the injector connector in the injector body 3.

[0042] When inserting or removing the injector body 3, first install the front locking unit 2 on the outside of the injector body 3. Then, connect the pulling unit 1 to the front locking unit 2. At this time, the pulling unit 1 cooperates with the front locking unit 2 to connect with the injector body 3. Then, by pulling the pulling unit 1, the front locking unit 2 is moved. With the cooperation of the pulling unit 1, the front locking unit 2 pulls the injector body 3 towards the tooling axis, so that the injector body 3 is subjected to force along the axis, and the injector connector in the injector body 3 is disassembled. This ensures that the direction of force on the injector connector is in the axis direction, eliminating the risk of damage to the injector body 3, thereby achieving effective disassembly of the injector body 3.

[0043] The pulling unit 1 includes a pull plate rod 11. The outer peripheral wall of the pull plate rod 11 is provided with a tail-end pulling hammer 13. The tail-end pulling hammer 13 is easy to hold. A sliding groove 14 is provided on the outer peripheral wall of the pull plate rod 11. The tail-end pulling hammer 13 is slidably connected to the inner wall of the sliding groove 14. The sliding groove 14 is used to limit the sliding stability of the tail-end pulling hammer 13.

[0044] The end of the pull plate rod 11 is provided with a pull plate seat 12, which facilitates the movement of the pull plate rod 11 by pulling it.

[0045] When disassembling the injector body 3, hold the tail end pull hammer 13 with one hand and the pull plate seat 12 with the other hand. At this time, the pull plate seat 12 can be used to pull the pull plate rod 11 to move. As the pull plate rod 11 moves, it slides along the tail end pull hammer 13, so that the force direction is the axial direction.

[0046] This causes the injector body 3 to be subjected to force along the axial direction, thereby disassembling the injector connector in the injector body 3. This ensures that the direction of force on the injector connector is along the axial direction, eliminating the risk of damage to the injector body 3, and thus achieving effective disassembly of the injector body 3. After disassembly is completed.

[0047] The end of the pull rod 11 away from the pull plate seat 12 is provided with a threaded groove 15, which is used for the installation of the pull unit 1 and the front locking unit 2.

[0048] When it is necessary to install the pull plate rod 11, the threaded groove 15 at the end of the pull plate rod 11 is connected to the threaded rod 22. By rotating the pull plate rod 11, the threaded groove 15 rotates along the connecting threaded rod 22, and the pull plate rod 11 is fixed to the mounting base 21. The pulling unit 1 is then connected to the front locking unit 2.

[0049] The front locking unit 2 includes a mounting base 21. One end of the mounting base 21 is provided with a connecting threaded rod 22, which is threadedly connected to the inner wall of the threaded groove 15. The other end of the mounting base 21 is fixedly connected with a connecting seat 23, and the mounting base 21 is provided with a locking component 24 through the connecting seat 23.

[0050] The locking assembly 24 is connected to the injector body 3, thereby connecting the pulling unit 1 to the front locking unit 2. This allows the pulling unit 1 to be connected to the injector body 3 via the front locking unit 2, facilitating the disassembly of the injector body 3.

[0051] Example 2:

[0052] According to the appendix Figure 1-5 As shown, it includes:

[0053] Pulling unit 1, which is used to ensure outward pulling in the direction of the tooling axis;

[0054] The front locking unit 2 is connected to the pulling unit 1, and the pulling unit 1 is used to pull the front locking unit 2 to move.

[0055] The injector body 3 is snapped into the front locking unit 2. The front locking unit 2 is used to lock the injector body 3, which facilitates the plugging and unplugging of the injector connector in the injector body 3.

[0056] When the injector body 3 is inserted or removed, the pulling unit 1, together with the front locking unit 2, is connected to the injector body 3. The pulling unit 1, together with the front locking unit 2, pulls the injector body 3 toward the tooling axis, so that the injector body 3 is subjected to force along the axis.

[0057] Locking assembly 24 includes:

[0058] The first fixed seat 241 has one end fixedly connected to the connecting seat 23;

[0059] The snap-fit ​​piece 242 is located in the first fixing seat 241;

[0060] Connecting block 243 is fixedly connected to one end of snap-fit ​​piece 242, and connecting block 243 is slidably connected in first fixed seat 241;

[0061] The locking block 244 is fixedly connected to the other end of the locking piece 242, and the locking block 244 is used to lock the injector body 3.

[0062] When the locking assembly 24 is engaged with the injector body 3, the adjusting locking piece 242 is moved, causing the connecting block 243 and the locking block 244 to move, thereby causing the locking block 244 to engage in the groove 31, thus completing the connection between the injector body 3 and the locking assembly 24.

[0063] A guide groove 245 is provided on the inner wall of the first fixed base 241. The connecting block 243 is slidably connected to the inner wall of the guide groove 245. The guide groove 245 is used to limit the sliding path of the connecting block 243, the snap-fit ​​piece 242 and the snap-fit ​​piece 244.

[0064] A second fixed seat 246 is fixedly connected to the side of the first fixed seat 241 away from the connecting seat 23, and an adjusting block 247 is fixedly connected to the end of the second fixed seat 246.

[0065] A nut seat 248 is threaded onto the inner wall of the adjusting block 247, and the nut seat 248 is rotatably connected to the inner wall of the connecting block 243;

[0066] When the two snap-fit ​​pieces 242 are placed on both sides of the injector body 3, so that the snap-fit ​​block 244 is set in the groove 31, the nut seat 248 is adjusted so that the nut seat 248 rotates along the inner wall of the adjusting block 247.

[0067] The rotation of the nut seat 248 drives the connecting block 243, the snap-fit ​​piece 242 and the snap-fit ​​block 244 to be adjusted. At this time, the connecting block 243 moves along the first fixed seat 241, so that the two snap-fit ​​blocks 244 are snapped into the groove 31, ensuring the stability of the connection between the front locking unit 2 and the injector body 3.

[0068] The end of the nut seat 248 is fixedly connected to a connector. The end of the nut seat 248 can be set as a butterfly head to facilitate the rotation of the nut seat 248 and the movement of the adjusting snap-fit ​​piece 242, so that the snap-fit ​​piece 242 snaps into the injector body 3, which facilitates the pulling unit 1 to pull out the injector body 3.

[0069] The injector body 3 has a groove 31, and the inner wall of the groove 31 fits against the locking block 244.

[0070] Working principle: When disassembling the injector body 3, first place the two snap-fit ​​pieces 242 on both sides of the injector body 3, so that the snap-fit ​​block 244 is set in the groove 31. By adjusting the nut seat 248, the nut seat 248 rotates along the inner wall of the adjusting block 247.

[0071] The rotation of the nut seat 248 drives the connecting block 243, the snap-fit ​​piece 242 and the snap-fit ​​block 244 to be adjusted. At this time, the connecting block 243 moves along the first fixed seat 241, so that the two snap-fit ​​blocks 244 are snapped into the groove 31, ensuring the stability of the connection between the front locking unit 2 and the injector body 3.

[0072] At this time, take out the pulling unit 1, connect the threaded groove 15 at the end of the pull plate rod 11 to the threaded rod 22, rotate the pull plate rod 11 so that the threaded groove 15 rotates along the connecting threaded rod 22, fix the pull plate rod 11 to the mounting base 21, and connect the pulling unit 1 to the front locking unit 2.

[0073] At this time, by holding the tail-end pulling hammer 13 with one hand and the pulling plate seat 12 with the other hand, the pulling plate seat 12 can be used to pull the pulling plate rod 11 to move. As the pulling plate rod 11 moves, it slides along the tail-end pulling hammer 13, so that the force direction is the axial direction.

[0074] As the pull rod 11 moves, it pulls the mounting base 21 to move. At this time, the locking assembly 24 moves, causing the first fixed base 241 to drive the snap-fit ​​piece 242 to move. The snap-fit ​​piece 242 then pulls out the injector connector in the injector body 3.

[0075] At this time, the injector body 3 is subjected to force along the axial direction, and the injector connector in the injector body 3 is disassembled to ensure that the direction of force on the injector connector is the axial direction, thereby eliminating the risk of damage to the injector body 3 and realizing the effective disassembly of the injector body 3. After disassembly, the snap-fit ​​piece 242 is disassembled to separate the snap-fit ​​piece 242 from the injector body 3, making it convenient to operate the injector body 3.

[0076] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A disassembly fixture for a gasoline engine pressure-type fuel injector, characterized in that, include: Pulling unit (1), which is used to ensure outward pulling in the direction of the tooling axis; A front locking unit (2) is connected to a pulling unit (1), the pulling unit (1) being used to pull the front locking unit (2) to move; The injector body (3) is engaged with the front locking unit (2), which is used to lock the injector body (3) to facilitate the plugging and unplugging of the injector connector in the injector body (3). When the injector body (3) is inserted or removed, the pulling unit (1) is connected to the injector body (3) in conjunction with the front locking unit (2). The pulling unit (1) and the front locking unit (2) pull the injector body (3) towards the tooling axis, so that the injector body (3) is subjected to force along the axis. The pulling unit (1) includes a pull plate rod (11), and a tail-end pulling hammer (13) is provided on the outer peripheral wall of the pull plate rod (11). The tail-end pulling hammer (13) is easy to hold. A sliding groove (14) is provided on the outer peripheral wall of the pull plate rod (11). The tail-end pulling hammer (13) is slidably connected to the inner wall of the sliding groove (14). The sliding groove (14) is used to limit the sliding stability of the tail-end pulling hammer (13). The end of the pull plate rod (11) is provided with a pull plate seat (12), which facilitates the movement of the pull plate rod (11) by pulling it. The end of the pull rod (11) away from the pull plate seat (12) is provided with a threaded groove (15), which is used for the installation of the pulling unit (1) and the front locking unit (2); The front locking unit (2) includes a mounting base (21), one end of which is provided with a connecting threaded rod (22), which is threadedly connected to the inner wall of the threaded groove (15). The other end of the mounting base (21) is fixedly connected with a connecting seat (23), and the mounting base (21) is provided with a locking component (24) through the connecting seat (23).

2. The disassembly fixture for a gasoline engine pressure-type fuel injector according to claim 1, characterized in that, The locking assembly (24) includes: The first fixed seat (241) is fixedly connected at one end to the connecting seat (23); The snap-fit ​​piece (242) is located in the first fixing seat (241); A connecting block (243) is fixedly connected to one end of a snap-fit ​​piece (242), and the connecting block (243) is slidably connected in a first fixed seat (241); A locking block (244) is fixedly connected to the other end of a locking piece (242), and the locking block (244) is used to lock the injector body (3).

3. The disassembly fixture for a gasoline engine pressure-type fuel injector according to claim 2, characterized in that, The first fixing seat (241) has a guide groove (245) on its inner wall. The connecting block (243) is slidably connected to the inner wall of the guide groove (245). The guide groove (245) is used to limit the sliding path of the connecting block (243), the snap-fit ​​piece (242) and the snap-fit ​​piece (244).

4. The disassembly fixture for a gasoline engine pressure-type fuel injector according to claim 3, characterized in that, The first fixing seat (241) is fixedly connected to the side away from the connecting seat (23) by a second fixing seat (246), and an adjusting block (247) is fixedly connected to the end of the second fixing seat (246).

5. The disassembly fixture for a gasoline engine pressure-type fuel injector according to claim 4, characterized in that, The inner wall of the adjusting block (247) is threaded with a nut seat (248), which is rotatably connected to the inner wall of the connecting block (243).

6. The disassembly fixture for a gasoline engine pressure-type fuel injector according to claim 5, characterized in that, The injector body (3) has a groove (31) and the inner wall of the groove (31) fits against the card block (244).

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