TWI891557B - Sleeve-type fuel injector removal tool - Google Patents

Abstract

A sleeve-type fuel injector removal tool is designed to clamp and remove fuel injectors. The tool includes a coupling member, a collar, and a sleeve. The coupling member attaches to one end of the fuel injector, while the collar is fixed around the exterior of the fuel injector and features a first positioning structure. The sleeve is positioned over both the coupling member and the collar, with its inner wall equipped with a second positioning structure and a stop edge. The second positioning structure interlocks with the first positioning structure, and the stop edge abuts against a support edge. With this configuration, the disclosed sleeve-type fuel injector removal tool is suitable for cases where conventional tools cannot remove the fuel injector. It provides stable coverage and accommodates greater removal force, ensuring the fuel injector can be removed from the engine effectively and efficiently.

Description

Sleeve-type grease nozzle removal tool

A disassembly tool, especially a sleeve-type oil nozzle disassembly tool.

Traditionally, fuel injector removal relies on a hammer operation, using a specialized extractor to gradually pull the injector out. However, because fuel injectors typically extend approximately 20 centimeters deep into the engine, over time, carbon deposits, adhesive adsorption, and moisture corrosion can cause them to become tightly bonded to the engine, making them difficult to remove.

Existing methods are time-consuming, often requiring hours or more of hammering to loosen the nozzle and disconnect it from the engine, thus delaying the repair process.

The main purpose of this disclosure is to solve the problem of low efficiency of existing nozzle extraction methods.

To achieve the above-mentioned purpose, an embodiment of the present disclosure provides a sleeve-type oil nozzle disassembly tool for clamping a oil nozzle for disassembly. The sleeve-type oil nozzle disassembly tool includes a connecting piece, a sleeve ring and a sleeve. The connecting piece has a connecting portion, a pulling portion and a supporting edge. The two ends of the connecting portion are respectively combined with the pulling portion and the oil nozzle. The supporting edge is arranged on the outer surface of the connecting portion and protrudes relatively from the surface of the connecting piece; the sleeve ring is fixedly sleeved on the outer surface between the two ends of the oil nozzle, and the sleeve ring has a first positioning structure; the sleeve is sleeved on the outside of the connecting piece and the sleeve ring, and the two ends of the inner wall of the sleeve are respectively provided with a second positioning structure and a stop edge. The second positioning structure is combined with the first positioning structure, and the stop edge abuts against the support edge.

As described above, the primary purpose of the sleeve-type fuel injector removal tool disclosed herein is to ensure that the fuel injector can be smoothly removed from the engine. Once the collar is tightly engaged with the exterior of the fuel injector, the sleeve can be installed thereon, ensuring that the removal tool is effectively secured to the fuel injector through multiple points of contact. This allows the overall structure of the fuel injector to withstand greater removal force. This tool is suitable for use in situations where conventional tools are unable to successfully remove the fuel injector, ultimately ensuring that the fuel injector can be successfully and quickly removed from the engine.

To more clearly illustrate the core concepts discussed above, specific embodiments are provided below. Please note that the proportions of objects in these embodiments are for illustration and clarification purposes only and are not drawn to scale. Furthermore, to improve readability, some components are omitted or depicted using phantom lines.

Referring to Figures 1 to 5 , this disclosure discloses a telescopic fuel nozzle removal tool, which is primarily used to clamp and remove a fuel nozzle 1. The telescopic fuel nozzle removal tool includes a connector 10, a collar 20, and a sleeve 30, ensuring smooth removal of the fuel nozzle 1 from the engine. This tool is particularly useful when conventional tools are ineffective in removing the fuel nozzle 1.

Connector 10 is coupled to one end of the nozzle 1. Connector 10 comprises a connecting portion 11, a removal portion 13, and a supporting edge 14. The ends of connecting portion 11 engage with the removal portion 13 and the nozzle 1, respectively. Supporting edge 14 is provided on the outer surface of connecting portion 11 and projects relatively beyond the surface of connecting portion 10. The outer surface of removal portion 13 is threaded, designed to engage with an extraction tool (not shown), allowing the extraction tool to apply a greater removal force. The inner wall of connecting portion 11 has an internal thread 12, which engages with one end of the nozzle 1, ensuring that connector 10 is securely fixed to the nozzle 1 and ensuring a more uniform and stable force during nozzle removal.

The collar 20 fits snugly around the outer surface of the grease nozzle 1 between its two ends. The collar 20 has a first retaining structure 21 on its surface. In some embodiments, the first retaining structure 21 is threaded, allowing it to engage with the sleeve 30 that will be installed later. However, this is not necessarily a threaded structure; for example, a snap-fit or latching structure may be used. To facilitate installation of the collar 20, in some embodiments, an opening 22 is provided on the side of the collar 20, forming a U-shaped structure. This opening 22 allows the collar 20 to be flexibly assembled to the outer surface of the grease nozzle 1.

The sleeve 30 is fitted over both the coupling 10 and the collar 20. A second retaining structure 31 and a stop edge 32 are provided at each end of the inner wall of the sleeve 30. The second retaining structure 31 is threaded. The second retaining structure 31 of the sleeve 30 engages with the first retaining structure 21 of the collar 20, ensuring that the sleeve 30 is securely fixed to the exterior of the grease nozzle 1 and enhancing the overall structural stability. The stop edge 32 abuts the supporting edge 14 of the coupling 10, preventing the sleeve 30 from slipping or shifting during force application, further enhancing the reliability of the removal tool.

In addition, a chamfered head 33 is provided at one end of the sleeve 30. The shape of the chamfered head 33 helps provide a better grip and operating feel when the user applies force to the sleeve 30. The user can more easily apply rotational force to the sleeve 30 to ensure that the sleeve 30 can be securely engaged with the first positioning structure 21 of the ring 20.

Referring to Figures 4 and 5 , in one embodiment, the internal thread 12 of the coupling 10 is first screwed into one end of the grease nozzle 1, securing the coupling 10 to the grease nozzle 1. Next, the collar 20 is installed onto the outer surface of the grease nozzle 1 through the side opening 22. Once the collar 20 and the grease nozzle 1 are tightly coupled, the sleeve 30 is fitted from the outside over the coupling 10 and collar 20, locking the second retaining structure 31 of the sleeve 30 with the first retaining structure 21 of the collar 20. Simultaneously, the stop edge 32 abuts the connecting portion 11 of the coupling 10. At this point, the entire disassembly tool is ready. The extractor tool can be engaged with the extraction portion 13 of the connector 10 and appropriate disassembly force can be applied to remove the fuel injector 1 from the engine.

When a removal force is applied, the structural design of the connector 10, the collar 20, and the sleeve 30 ensures that the force is evenly distributed during the removal process. The enveloping design of the sleeve 30 enables the nozzle 1 to withstand a relatively large removal force, ensuring that the nozzle 1 can be removed quickly and smoothly even under the high-intensity operation of the extraction tool.

Through the above-described structure, the present disclosure ensures that the extraction tool remains securely positioned even when a large force is applied, through the interconnected design of the connector 10, the collar 20, and the sleeve 30, thereby preventing deflection or loosening during the removal process. Furthermore, the overall bearing capacity of the fuel injector 1 is enhanced, thereby increasing the force of the extraction tool during the removal process and speeding up the removal of the fuel injector 1.

Finally, it should be understood that the embodiments described herein are intended merely to illustrate the principles of the disclosed embodiments. Other variations are also possible within the scope of the disclosed embodiments. Therefore, by way of example and not limitation, alternative configurations of the disclosed embodiments may be considered consistent with the teachings of the disclosed embodiments. Accordingly, the disclosed embodiments are not limited to those explicitly described and illustrated herein.

1: Grease nozzle 10: Connector 11: Connecting portion 12: Internal thread 13: Extraction portion 14: Abutment edge 20: Collar 21: First positioning structure 22: Opening 30: Sleeve 31: Second positioning structure 32: Stop edge 33: Chamfered head

[Figure 1] is a schematic perspective view of the disclosed sleeve-type fuel nozzle removal tool. [Figure 2] is a schematic perspective exploded view of the disclosed sleeve-type fuel nozzle removal tool. [Figure 3] is a schematic cross-sectional view taken along line A-A in [Figure 1]. [Figure 4] is a schematic perspective view of the disclosed sleeve-type fuel nozzle removal tool combined with the fuel nozzle. [Figure 5] is a schematic cross-sectional view taken along line B-B in [Figure 4].

10: Connectors

11: Connection

13: Extraction section

14: Support the relationship

20: Ring

21: First positioning structure

22: Opening

30: Sleeve

32: Stop edge

33: Chamfer head

Claims (6)

A sleeve-type grease nozzle removal tool, used to secure a grease nozzle for removal, comprises: A coupling member having a connecting portion, a pull-out portion, and a supporting edge. The connecting portion has two ends that respectively engage the pull-out portion and the grease nozzle. The supporting edge is disposed on the outer surface of the connecting portion and projects relatively from the surface of the coupling member; A collar fixedly mounted on the outer surface of the grease nozzle between its two ends. The collar has a first positioning structure; and A sleeve that sleeves over the exterior of the connecting member and the collar. The sleeve has a second positioning structure and a stop edge disposed on its inner wall at two ends. The second positioning structure engages with the first positioning structure, and the stop edge abuts the support edge. As described in claim 1, the sleeve-type oil nozzle removal tool, wherein the connecting portion is provided with an internal thread, and the internal thread is used to couple with one end of the oil nozzle. As described in claim 1, the outer surface of the extraction portion is threaded, and the thread is used to be coupled with an extraction tool. The sleeve-type oil nozzle removal tool as described in claim 1, wherein the first positioning structure and the second positioning structure are both threads. As described in claim 1, the sleeve-type oil nozzle removal tool has an opening on the side of the sleeve so that the sleeve forms a U-shaped structure. A sleeve-type oil nozzle removal tool as described in claim 1, wherein a chamfered head is formed at one end of the sleeve.