A slot cover dismounting tool

Abstract

The utility model provides a kind of slot cover dismounting tool, belong to plugging piece dismounting tool technical field.Slot cover dismounting tool includes by inside outward sequential sleeve setting: drilling center shaft, with sequentially arranged drill bit, first guide section, second guide section and power input end, first guide section and second guide section are respectively provided with outer thread;Movable sleeve, its inner wall is provided with inner thread, and the inner thread is matched with the outer thread of second guide section;Support sleeve, with movable sleeve sliding fit, first limiting structure that limit movable sleeve circumferential direction rotation is arranged between support sleeve and movable sleeve.Slot cover dismounting tool drives drilling center shaft by power unit, in combination with the thread transmission and structural design of movable sleeve and support sleeve, realize the quick drilling of slot cover and push out, significantly improve the dismounting efficiency of fastener head slot cover.

Description

Technical Field

[0001] This utility model relates to the technical field of sealing component disassembly tools, and in particular to a groove cover disassembly tool. Background Technology

[0002] Currently, many products, especially aircraft fasteners, often require slot covers to seal the grooves or mounting holes in the fastener heads, in order to meet product performance and appearance requirements.

[0003] The slot cover is typically installed on the head of the fastener using an interference fit to ensure a secure fit and adaptability to various special working conditions. When the fastener needs to be repaired, inspected, or replaced, the slot cover needs to be removed from the head of the fastener; however, the interference fit between the slot cover and the head of the fastener means that a large amount of force is required for disassembly.

[0004] For slot covers mounted on the heads of fasteners, the common method of disassembly is to use a conventional hook prying method. However, since slot covers are generally injection molded parts, their material is relatively hard. The hook tip needs to penetrate the top surface of the slot cover and go in a sufficient length to apply enough force to pry it off. In practice, both the insertion force and the prying force of the hook are relatively large, making the operator extremely uncomfortable and prone to fatigue. In addition, due to the large force and small cross-sectional area, the hook tip is very prone to fatigue breakage, resulting in a very short lifespan. From an economic perspective, this leads to high costs and negatively impacts the widespread adoption of slot cover products.

[0005] In view of this, based on years of experience in production and design in this and related fields, the inventor has designed a slot cover disassembly tool through repeated experiments in order to solve the problems existing in the prior art. Utility Model Content

[0006] The purpose of this utility model is to provide a groove cover removal tool that can effectively improve the removal efficiency of the groove cover on the head of the fastener.

[0007] To achieve the above objectives, this utility model proposes a slot cover disassembly tool, wherein the slot cover disassembly device comprises, sequentially arranged from the inside out:

[0008] The drilling center shaft has a drill bit, a first guide section, a second guide section and a power input end arranged in sequence, and the first guide section and the second guide section are respectively provided with external threads;

[0009] The movable sleeve has an internal thread on its inner wall, and the internal thread is aligned with the external thread of the second guide section.

[0010] A support sleeve is slidably fitted with the movable sleeve, and a first limiting structure is provided between the support sleeve and the movable sleeve to restrict the movable sleeve from rotating in the circumferential direction.

[0011] As described above, the slot cover disassembly tool includes a movable sleeve comprising a pressing end, a connecting section, and a limiting end arranged sequentially. The pressing end is aligned with the drill bit, the connecting section is aligned with the second guide section, the internal thread is formed on the inner wall of the connecting section, the outer diameter of the limiting end is larger than the outer diameter of the connecting section, and the inner wall of the support sleeve is provided with a limiting step that aligns with the limiting end.

[0012] As described above, in the slot cover disassembly tool, the first limiting structure includes a guide groove and a guide rail that are aligned and fitted together. Both the guide groove and the guide rail are opened along the length direction of the movable sleeve. The guide groove is opened on the inner wall of the support sleeve, and the guide rail is arranged on the outer wall of the movable sleeve.

[0013] As described above, in the slot cover disassembly tool, the first limiting mechanism includes a guide groove and a guide rail that are aligned and fitted together. Both the guide groove and the guide rail are opened along the length direction of the movable sleeve. The guide groove is opened on the outer wall of the movable sleeve, and the guide rail is arranged on the inner wall of the support sleeve.

[0014] In the groove cover disassembly tool described above, the outer diameter of the first guide section is smaller than the inner diameter of the movable sleeve, and an annular gap is formed between the outer wall of the first guide section and the inner wall of the movable sleeve.

[0015] In the groove cover removal tool described above, the external thread of the first guide section is an ST thread, and the external thread of the second guide section is a Tr thread.

[0016] In the slot cover removal tool described above, the power input end extends from the movable sleeve and the support sleeve, and the power input end is connected to a handle.

[0017] In the slot cover removal tool described above, the power input end extends from the movable sleeve and the support sleeve, and the power input end is connected to an electric drive unit.

[0018] In the slot cover removal tool described above, one end of the support sleeve is fixedly connected to the housing of the electric drive unit.

[0019] As described above, in the slot cover removal tool, the other end of the support sleeve has an observation notch.

[0020] Compared with the prior art, the present invention has the following features and advantages:

[0021] This utility model proposes a slot cover disassembly tool. Through the cooperation of a support sleeve, a movable sleeve, and a drilling center shaft, the drill bit of the drilling center shaft can quickly drill into the slot cover, and then the drill bit and the movable sleeve are used to pull out the slot cover. This achieves rapid drilling and ejection of the slot cover, significantly improving the disassembly efficiency of the slot cover at the head of the fastener. It eliminates the need for manual application of large insertion and prying forces, reduces operator fatigue, avoids the problem of easy fatigue and breakage of the hook, extends the tool's service life, and reduces the cost of use. Attached Figure Description

[0022] The accompanying drawings described herein are for illustrative purposes only and are not intended to limit the scope of this invention in any way. Furthermore, the shapes and proportions of the components in the drawings are merely illustrative to aid in understanding the invention and do not specifically limit the shapes and proportions of the components. Those skilled in the art, under the guidance of this invention, can select various possible shapes and proportions to implement this invention according to specific circumstances.

[0023] Figure 1 This is a schematic diagram of the drilling center shaft structure of this utility model;

[0024] Figure 2 This is a schematic diagram of the movable sleeve structure of this utility model;

[0025] Figure 3 This is a schematic diagram of the cross-section of the movable sleeve of this utility model;

[0026] Figure 4 This is a schematic diagram of the support sleeve structure of this utility model;

[0027] Figure 5 This is a schematic diagram of the cross-section of the support sleeve of this utility model;

[0028] Figure 6 This is a schematic diagram of the overall structure of the disassembly tool of this utility model.

[0029] Explanation of the attached figure numbers:

[0030] 10. ST thread; 20. Tr thread;

[0031] 30. Slot cover; 31. Limiting end;

[0032] 32. Observe the notch; 40. Guide rail;

[0033] 41. Guide channel; 50. Electric drive unit;

[0034] 51. Reversing switch; 52. Start switch;

[0035] 60. Support sleeve; 601. Observe the notch;

[0036] 61. Movable sleeve; 611. Push end;

[0037] 612. Connecting section; 613. Limiting end;

[0038] 62. Drilling center shaft; 621. Drill bit;

[0039] 622. First guide section; 623. Second guide section;

[0040] 624. Power input end. Detailed Implementation

[0041] The details of this utility model can be more clearly understood by referring to the accompanying drawings and the description of specific embodiments. However, the specific embodiments of this utility model described herein are for illustrative purposes only and should not be construed as limiting the utility model in any way. Under the teachings of this utility model, those skilled in the art can conceive of any possible modifications based on this utility model, and these should all be considered to fall within the scope of this utility model.

[0042] Unless otherwise defined, the directions such as up, down, left, and right mentioned in this document refer to those shown in this utility model. Figure 1 The directions of up, down, left, and right are used as a reference, and will be explained here.

[0043] like Figures 1 to 5 As shown, this utility model proposes a tool for disassembling a slot cover, wherein the slot cover disassembly device includes components sequentially arranged from the inside out:

[0044] The drilling center shaft 62 has a drill bit 621, a first guide section 622, a second guide section 623 and a power input end 624 arranged in sequence. The first guide section 622 and the second guide section 623 are respectively provided with external threads.

[0045] The movable sleeve 61 has an internal thread on its inner wall, which is aligned with the external thread of the second guide section 623.

[0046] The support sleeve 60 is slidably fitted with the movable sleeve 61, and a first limiting structure is provided between the support sleeve 60 and the movable sleeve 61 to restrict the circumferential rotation of the movable sleeve 61.

[0047] This utility model proposes a tool for disassembling a slot cover, such as... Figure 6As shown, through the segmented external thread design of the drilling center shaft 62, the first guide section 622 realizes the screw-in positioning of the drill bit 621, and the second guide section 623 cooperates with the internal thread of the movable sleeve 61 to form a helical drive. Under the constraint of the limiting structure of the support sleeve 60, the rotational motion is converted into axial linear pushing, replacing the hook prying method and reducing the operation intensity. The helical drive disperses local stress to avoid tool breakage, and the axial motion design ensures the stability of the ejection force direction. Combined with the mechanical and automated switching of screwing in and pushing, the disassembly efficiency and operation safety are improved, meeting the needs of efficient disassembly of fasteners with large interference fits.

[0048] In an optional embodiment of this utility model, the movable sleeve 61 includes a pressing end 611, a connecting section 612, and a limiting end 613 arranged in sequence. The pressing end 611 is aligned with the drill bit 621, the connecting section 612 is aligned with the second guide section 623, the internal thread is formed on the inner wall of the connecting section 612, the outer diameter of the limiting end 613 is larger than the outer diameter of the connecting section 612, and the inner wall of the support sleeve 60 is provided with a limiting step that aligns with the limiting end 61.

[0049] Specifically, such as Figure 2 As shown, the movable sleeve 61 is composed of a pressing end 611, a connecting section 612, and a limiting end 613 connected in sequence. The pressing end 611 is aligned and engaged with the drill bit 621 of the drilling center shaft 62. The inner wall of the connecting section 612 is provided with a Tr thread 20 that matches the external thread of the second guide section 623 of the drilling center shaft 62, forming a helical transmission pair. The outer diameter of the limiting end 613 is larger than the outer diameter of the main body of the movable sleeve 61, and together with the annular limiting step on the inner wall of the supporting sleeve 60, it forms a mechanical limiting mechanism.

[0050] Furthermore, the pushing end 611, the connecting section 612, and the limiting end 613 are coaxially arranged. The end face of the pushing end 611 is axially aligned with the drill bit 621. The threaded section of the connecting section 612 covers the effective stroke of the second guide section 623. The limiting step and the contact surface of the limiting end 613 form a right-angle stepped fit.

[0051] With the above structure, the precise alignment of the pushing end 611 and the drill bit 621 ensures that the direction of the ejection force is perpendicular to the end face of the slot cover 30. The threaded pair of the connecting section 612 converts the rotational motion into a precise linear ejection action. The limiting end 613 and the step of the support sleeve 60 form a double mechanical limit, which not only prevents the movable sleeve 61 from falling off due to overtravel but also ensures that the pushing stroke is controllable.

[0052] In one optional embodiment of this utility model, such as Figures 3 to 6 As shown, the first limiting structure includes a guide groove 41 and a guide rail 40 that are aligned and fitted together. Both the guide groove 41 and the guide rail 40 are opened along the length direction of the movable sleeve 61. The guide groove 41 is opened on the inner wall of the support sleeve 60, and the guide rail 40 is set on the outer wall of the movable sleeve 61.

[0053] Specifically, the first limiting structure includes a guide groove 41 on the inner wall of the supporting sleeve 60 and a guide rail 40 on the outer wall of the movable sleeve 61. The guide groove 41 is an axially extending straight groove, and the guide rail 40 is a protruding structure that matches the cross-section of the guide groove 41. The two fit together to form a sliding pair. The depth of the guide groove 41 is adapted to the height of the guide rail 40, and the two side walls of the guide groove 41 are in contact with the sides of the guide rail 40. The guide rail 40 is continuously set along the entire length of the outer wall of the movable sleeve 61. The guide groove 41 covers the area corresponding to the movement stroke of the inner wall of the supporting sleeve 60 and the movable sleeve 61, forming an uninterrupted axial guiding constraint. The first limiting structure can precisely limit the movement trajectory of the movable sleeve 61, so that it can only move in a straight line along the axial direction of the supporting sleeve 60, effectively preventing the movable sleeve 61 from rotating or shifting laterally during transmission.

[0054] In another optional embodiment of the present invention, the first limiting mechanism includes a guide groove 41 and a guide rail 40 that are aligned and fitted together. Both the guide groove 41 and the guide rail 40 are opened along the length direction of the movable sleeve 61. The guide groove 41 is opened on the outer wall of the movable sleeve 61, and the guide rail 40 is arranged on the inner wall of the supporting sleeve 60.

[0055] By aligning the guide groove 41 with the guide rail 40, the movement stability of the groove cover removal tool is improved, and the direction of the force exerted by the movable sleeve 61 when pushing the groove cover 30 is consistent with the direction of groove cover 30 removal, thus avoiding damage to the groove cover 30 or incomplete removal due to force deviation.

[0056] In one alternative embodiment of this implementation, the outer diameter of the first guide section 622 is smaller than the inner diameter of the push end 611, and an annular gap is formed between the outer wall of the first guide section 622 and the inner wall of the push end 611. The axial extension range of the annular gap covers the mating area of ​​the first guide section 622 and the push end 611. The annular gap can provide interference-free displacement space for the movement of the movable sleeve 61, thereby avoiding radial collision between the push end 611 and the first guide section 622 when the drilling center shaft 62 is screwed in, which would affect the drilling movement of the drilling center shaft 62.

[0057] In an optional embodiment of this utility model, the external thread of the first guide section 622 is an ST thread 10, and the external thread of the second guide section 623 is a Tr thread 20. The ST thread 10 is used to screw into the groove cover 30 to form a threaded connection; the Tr thread 20 mates with the internal thread of the movable sleeve 61 to form a helical transmission pair. The length of the ST thread 10 is adapted to the thread depth of the groove cover 30, and the length of the Tr thread 20 covers the stroke range of the movable sleeve 61. The first guide section 622 forms a sealed connection with the corresponding internal thread through the ST thread 10, and the second guide section 623 achieves efficient power transmission with the transmission component through the Tr thread 20. The two are arranged sequentially along the axial direction of the movable sleeve 61, respectively undertaking the functions of positioning and sealing and torque transmission.

[0058] In an optional embodiment of this invention, the power input end 624 extends beyond the movable sleeve 61 and the support sleeve 60, and a handle is connected to the power input end 624. The axial extension length of the power input end exceeds the ends of the movable sleeve 61 and the support sleeve 60, forming an exposed operating part. This operating part is rigidly connected to the handle by welding or keying, ensuring that both rotate synchronously during torque transmission. The connection design between the exposed power input end and the handle provides the user with a direct point of force application, facilitating precise control of the magnitude and direction of torque during manual operation.

[0059] In another optional embodiment of this utility model, the power input end extends from the movable sleeve 61 and the support sleeve 60. The power input end 624 is connected to a power unit 50, which contains an electric drive mechanism. The electric drive mechanism is connected to the power input end 624 via a detachable connection structure, such as a keyed connection or a threaded connection, to ensure the stability of power transmission. The electric drive mechanism has a steering switching function, and the forward and reverse rotation of the power input end can be controlled by a reversing switch 51. Its output speed and torque parameters are adapted to the load requirements of disassembling the slot cover 30. A commercially available customized power tool drive module can be selected for the specific model.

[0060] In one alternative embodiment of this implementation, one end of the support sleeve 60 is fixedly connected to the housing of the power unit 50. The end of the support sleeve 60 with an internal thread is aligned with the external thread on the housing of the power unit 50, and a fixed connection is achieved through threaded connection, ensuring a rigid connection between the power unit and the support sleeve 60.

[0061] In one optional embodiment of this implementation, an observation notch 601 is provided at the other end of the support sleeve 60. Preferably, the two observation notches 601 are symmetrical from left to right. The observation notch 601 penetrates the wall thickness of the support sleeve 60 to form a transparent window. The long side of the observation notch 601 extends along the axial direction of the support sleeve 60. The width of the observation notch 601 is adapted to the operator's field of vision. The symmetrical distribution allows both left and right hands to observe the alignment status of the drill bit 621 and the center hole of the slot cover 30 through the observation notch 601.

[0062] The specific working process of this utility model will now be described in detail with reference to an embodiment, such as... Figure 6 As shown, the slot cover disassembly tool of this utility model consists of a power unit 50, a drilling center shaft 62, a movable sleeve 61, and a support sleeve 60. The power unit 50 is a custom-made product and has a steering switching function.

[0063] The specific operating steps are as follows:

[0064] 1. Align the tip of the drill bit 621 of the drilling center shaft 62 with the center hole of the slot cover 30;

[0065] 2. Press the start switch 52, and after the drilling center shaft 62 is screwed into the groove cover 30 a certain distance, the support sleeve 60 presses against the mounting base (e.g., fastener) of the groove cover 30.

[0066] 3. The groove cover 30 detaches from the mounting base;

[0067] 4. Press the reversing switch 51 to reverse the power unit 50, and the movable sleeve 61 extends out of the push-slot cover 30 until it falls off.

[0068] The detailed explanations of the above embodiments are intended only to explain the present invention so as to facilitate a better understanding of the present invention. However, these descriptions should not be construed as limiting the present invention for any reason. In particular, the various features described in different embodiments can be arbitrarily combined with each other to form other embodiments. Unless there is an explicit description to the contrary, these features should be understood to be applicable to any embodiment, and not limited to the described embodiments.

Claims

1. A tool for disassembling a slot cover, characterized in that, The tool for removing the slot cover includes items that are sequentially fitted from the inside out: The drilling center shaft has a drill bit, a first guide section, a second guide section and a power input end arranged in sequence, and the first guide section and the second guide section are respectively provided with external threads; The movable sleeve has an internal thread on its inner wall, and the internal thread is aligned with the external thread of the second guide section. A support sleeve is slidably fitted with the movable sleeve, and a first limiting structure is provided between the support sleeve and the movable sleeve to restrict the movable sleeve from rotating in the circumferential direction.

2. The groove cover disassembly tool as described in claim 1, characterized in that, The movable sleeve includes a pressing end, a connecting section, and a limiting end arranged in sequence. The pressing end is aligned with the drill bit, the connecting section is aligned with the second guide section, the internal thread is formed on the inner wall of the connecting section, the outer diameter of the limiting end is larger than the outer diameter of the connecting section, and the inner wall of the support sleeve is provided with a limiting step that aligns with the limiting end.

3. The groove cover disassembly tool as described in claim 1, characterized in that, The first limiting structure includes a guide groove and a guide rail that are aligned and fitted together. Both the guide groove and the guide rail are opened along the length direction of the movable sleeve. The guide groove is opened on the inner wall of the support sleeve, and the guide rail is arranged on the outer wall of the movable sleeve.

4. The groove cover disassembly tool as described in claim 1, characterized in that, The first limiting structure includes a guide groove and a guide rail that are aligned and fitted together. Both the guide groove and the guide rail are opened along the length direction of the movable sleeve. The guide groove is opened on the outer wall of the movable sleeve, and the guide rail is arranged on the inner wall of the supporting sleeve.

5. The groove cover disassembly tool as described in claim 4, characterized in that, The outer diameter of the first guide section is smaller than the inner diameter of the movable sleeve, and an annular gap is formed between the outer wall of the first guide section and the inner wall of the movable sleeve.

6. The groove cover disassembly tool as described in claim 1, characterized in that, The external thread of the first guide section is an ST thread, and the external thread of the second guide section is a Tr thread.

7. The groove cover disassembly tool as described in claim 1, characterized in that, The power input end extends from the movable sleeve and the support sleeve, and the power input end is connected to a handle.

8. The groove cover disassembly tool as described in claim 1, characterized in that, The power input end extends from the movable sleeve and the supporting sleeve, and the power input end is connected to an electric drive unit.

9. The groove cover disassembly tool as described in claim 8, characterized in that, One end of the support sleeve is fixedly connected to the housing of the electric drive unit.

10. The slot cover disassembly tool as described in claim 8, characterized in that, An observation notch is provided at the other end of the support sleeve.

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