A buckle disassembly tool

Abstract

This application relates to a clip removal tool, belonging to the technical field of automotive auxiliary tools. This clip removal tool is used to remove female clips. It includes a removal head, comprising: a rod for inserting into the female clip; a locking block disposed on the rod and used to embed into the groove of the female clip's locking foot, squeezing the foot to retract it inwards; and a locking platform disposed at one end of the rod, used to engage with the annular claw of the female clip. This application allows the clip removal tool to be directly inserted into the female clip without contacting the vehicle body surface. During removal, the locking block embeds into the groove of the locking foot and forces it to retract, while the locking platform engages with the annular claw, achieving smooth removal of the female clip. This design effectively solves the problems of difficulty in removing female clips, easy damage to the clip, scratches on the vehicle body, and wear on the vehicle body mounting holes that exist with traditional tools, significantly improving removal efficiency and operational safety.

Description

Technical Field

[0001] This application relates to the field of automotive auxiliary tools technology, and more particularly to a clip removal tool. Background Technology

[0002] In modern automotive manufacturing, clips, as convenient and efficient connecting components, play a vital role in vehicle assembly. For automotive interior and exterior panels, trim pieces, and functional components, the application of clips avoids the increased weight, higher costs, and additional damage to the vehicle body structure caused by welding and bolting. They also facilitate subsequent maintenance and replacement of parts, making them a key element in achieving lightweighting and streamlined assembly in automobiles. Among the many types of clips, the female-female plastic clip is widely used due to its excellent connection performance. This type of clip consists of two parts: a female clip and a male clip. The two parts interlock via ring-shaped claws, forming a stable connection structure. Specifically, the female clip uses its own claws to form a tight connection with pre-drilled holes in the vehicle body, thus fixing it to the vehicle body; the female clip connects to the trim piece via its clip head. When the female clip and male clip are engaged, the trim piece is securely fixed to the vehicle body. When disassembling trim pieces, the female and male clips must be separated first before the female clip can be disassembled. However, traditional clip removal tools, such as V-shaped pry bars, have several significant drawbacks. Traditional tools struggle to apply precise and effective disassembly force to the female clip, making disassembly difficult. More importantly, traditional tools rely on leverage to pry up the female clip, forcing its locking tabs to contract under pressure from the mounting holes in the vehicle body, thus removing it. During this process, the female clip is highly susceptible to deformation or even damage due to uneven force, and the mounting holes wear down due to continuous friction, negatively impacting the installation accuracy and reliability of subsequent components. Furthermore, when traditional tools are inserted under the female clip along the vehicle body mounting surface, friction between the tool and the surface can easily scratch the vehicle's exterior, affecting its appearance. Utility Model Content

[0003] This application provides a clip removal tool, the purpose of which is to easily remove the female clip by embedding the clip into the groove of the female clip foot during the removal process, thereby forcing the female clip foot to retract, solving problems such as difficulty in removing the female clip, damage, and scratches on the vehicle body, and improving the removal efficiency.

[0004] To achieve the above objectives, this application adopts the following technical solution: This application provides a buckle removal tool for removing a female buckle. The female buckle includes a male buckle mounting hole, a locking foot, and an annular locking claw. The male buckle mounting hole extends through the female buckle along its axis. The annular locking claw is located on one side of the female buckle. The locking foot is located on the outer side wall of the female buckle and has a groove. The buckle removal tool includes a removal head, which includes: A plug rod, the plug rod being inserted into the sub-buckle mounting hole; A locking block is disposed on the insert rod and is used to be embedded in the groove of the locking foot; When the insert rod is inserted into the mounting hole of the female buckle from the side away from the annular claw, the locking block squeezes the locking foot to cause the locking foot to retract into the female buckle.

[0005] In the above embodiments, this application designs a disassembly head including a insertion rod and a locking block, enabling the clip disassembly tool to be directly inserted into the female clip without contacting the vehicle body surface throughout the process. During disassembly, the locking block embeds into the locking foot groove and forces the locking foot to retract, achieving smooth disassembly of the female clip. This design effectively solves the problems of disassembly difficulties, easy damage to the clip, scratches on the vehicle body, and wear on the vehicle body mounting holes that exist with traditional tools when disassembling female clips, significantly improving disassembly efficiency and operational safety. In some embodiments, the disassembly head further includes a locking platform disposed at one end of the insert rod for insertion into the sub-buckle mounting hole; the locking platform is used to engage with the annular claw.

[0006] In the above embodiments, when the locking block forces the locking foot to retract and disengage the female buckle from the pre-drilled hole in the vehicle body, the locking platform can provide stable support for the female buckle through its engagement with the annular locking claw. This ensures that the female buckle can be simultaneously pulled out of the vehicle body when the disassembly tool is pulled out, preventing the female buckle from getting stuck or falling off, and ensuring the continuity and reliability of the disassembly process. At the same time, the cooperation between the locking platform and the annular locking claw provides a clear force fulcrum for the female buckle, allowing the disassembly force to be applied to the female buckle more precisely, further improving disassembly efficiency and operational stability. In some embodiments, the number of the locking blocks is equal to and corresponds one-to-one with the number of locking feet of the female buckle.

[0007] In the above embodiments, the number of card blocks and card feet in this application are equal and correspond one-to-one, which can ensure that each card foot can be accurately acted upon by the corresponding card block, avoiding the situation where some card feet cannot be contracted due to insufficient number of card blocks, or the situation where excessive number of card blocks causes structural redundancy and interference.

[0008] In some embodiments, the side of the card block facing the card table is a pressing surface, which extends obliquely from its connection with the insertion rod towards the side closer to the card table.

[0009] In the above embodiments, this application clearly defines the side of the card block facing the card table as an inclined extrusion surface. This structural design allows the extrusion surface to precisely match the bottom surface of the card foot groove during the insertion of the card block into the groove. The component force generated by the inclination angle applies an inward extrusion force to the card foot, ensuring reliable retraction of the card foot. In some embodiments, the angle formed by the extrusion surface and the axis of the insertion rod is 10° to 20° larger than the angle formed by the bottom surface of the groove and the axis of the sub-fastener mounting hole.

[0010] In the above embodiments, this application limits the angle between the extrusion surface and the axis of the disassembly head to be 10°~20° larger than the angle between the bottom surface of the groove and the axis of the female buckle. This angle difference enables the extrusion surface and the bottom surface of the groove to form a wedge fit, gradually increasing the radial extrusion force on the clamping foot during the insertion process. This ensures that the clamping foot fully retracts to disengage from the mounting hole, while avoiding stress concentration at the root of the clamping foot due to excessive angle, thus improving the protection effect on the female buckle clamping foot. In some embodiments, the card holder includes a locking portion and a frustum portion; the locking portion is connected to the insertion rod via an inclined surface.

[0011] In the above embodiments, this application sets the card platform as a snap-fit ​​part and a frustum part, and the snap-fit ​​part is connected to the insertion rod by an inclined surface. On the one hand, the card platform structure is refined, and on the other hand, a reasonable structural basis is provided for the snap-fit ​​between the card platform and the annular claw, making the snap-fit ​​more stable. In some embodiments, the inclined surface extends obliquely from its connection with the plug towards the side closer to the frustum portion; The angle between the inclined plane and the axis of the disassembly head is 45°~65°.

[0012] In the above embodiments, this application clearly specifies that the inclined surface extends obliquely to the side near the truncated cone and the angle between it and the axis of the disassembly head is 45°~65°. The inclined surface design within this angle range can ensure that the locking part and the annular claw form an effective locking, ensuring that the female buckle can be reliably driven out during disassembly, and can also make the female buckle easy to detach from the tool after disassembly, thus balancing the locking firmness and the disassembly convenience. In some embodiments, the diameter of the locking portion is 0.4 mm to 1.6 mm larger than the inner diameter of the annular claw on the side away from the locking foot.

[0013] In the above embodiments, the diameter of the snap-fit ​​part is limited to be 0.4 mm to 1.6 mm larger than the inner diameter of the annular claw on the side away from the snap foot. This size difference range can achieve a proper fit between the snap-fit ​​part and the annular claw, which not only ensures the stability of the snap-fit ​​between the two and prevents the female buckle from falling off during disassembly, but also makes it easy to remove the female buckle from the tool after disassembly. In some embodiments, the buckle removal tool includes a handle, one end of which is connected to the removal head via a connecting portion.

[0014] In the above embodiments, this application adds a handle to facilitate the operator's grip on the tool, improve the convenience and stability of operation, reduce operational errors caused by unstable grip, and further improve disassembly efficiency. In some embodiments, a pressing portion is provided at the end of the handle away from the disassembly head.

[0015] In the above embodiments, this application provides a pressing part at the end of the handle away from the disassembly head, which increases the contact area between the hand and the handle, effectively dispersing the pressure during operation and relieving hand fatigue; at the same time, it increases the resistance when removing the tool, preventing it from slipping out of the hand and improving the safety of operation. It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of a sub-button in existing technology; Figure 2 This is a schematic diagram of the structure of a female buckle in the prior art; Figure 3 This is a top view of the existing female buckle structure; Figure 4 yes Figure 3 Schematic diagram of AA section in the middle; Figure 5 This is a schematic diagram illustrating the usage status of the female and female fasteners in existing technology; Figure 6 yes Figure 5 Schematic diagram of the BB cross section; Figure 7 This is a schematic diagram of the engagement state of the female and male buckles in existing technology; Figure 8 This is a schematic diagram of the structure used in the prior art to disassemble the female fastener using a V-notch pry bar; Figure 9 This is a schematic diagram of the structure of the buckle disassembly tool provided in the embodiments of this application; Figure 10 This is a schematic diagram of the structure of the disassembly head provided in an embodiment of this application; Figure 11 This is a schematic diagram illustrating the usage state of the buckle disassembly tool provided in the embodiments of this application; Figure 12 This is a side view of the buckle disassembly tool provided in the embodiments of this application in its usage state; Figure 13 yes Figure 12 Schematic diagram of the CC section; Figure 14 This is a schematic diagram of the structure of the disassembly head when it is about to be inserted into the female buckle, as provided in the embodiment of this application; Figure 15 This is a schematic diagram of the structure when the disassembly head is partially inserted into the female buckle according to an embodiment of this application; Figure 16 This is a schematic diagram of the structure when the disassembly head is fully inserted into the female buckle according to the embodiment of this application; wherein, the dashed line represents the structural position when the female buckle's locking foot is not retracted; Figure 17 This is a schematic diagram of the structure of the disassembly head for removing the female buckle according to an embodiment of this application.

[0017] In the above figures: θ1 represents the angle between the bottom surface of the groove on the female buckle foot and the axis of the female buckle; θ2 represents the angle between the pressing surface of the disassembly head block and the axis of the disassembly head; θ3 represents the angle between the inclined surface of the clamping platform and the axis of the disassembly head; a represents the inner diameter of the annular claw of the female buckle away from the top cap (i.e., the inner diameter of the bottommost part of the female buckle); b represents the diameter of the clamping part of the clamping platform (i.e., the maximum diameter of the clamping platform).

[0018] In the above figures: 100, female buckle; 110, clip head; 120, clip expansion part; 121, annular clip groove; 200, female buckle; 210, top cap; 220, clip foot; 221, groove; 222, bottom surface; 230, annular clip claw; 240, female buckle mounting hole; 250, side wall opening; 300, body; 400, decorative part; 500, V-shaped notch pry bar; 600, buckle removal tool; 610, pressing part; 620, handle; 630, connecting part; 640, removal head; 641, insertion rod; 642, clip block; 642a, pressing surface; 643, clip platform; 643a, inclined surface; 643b, clip connection part; 643c, frustum. Detailed Implementation

[0019] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between components; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0020] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0021] In this application, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0022] Additionally, if the meaning of "and / or" in the text is that it includes three parallel options, taking "A and / or B" as an example, it includes option A, option B, or an option that satisfies both A and B.

[0023] The present application will now be described in detail through exemplary embodiments. However, it should be understood that, without further description, elements, structures, and features in one embodiment may be advantageously incorporated into other embodiments.

[0024] In modern automotive manufacturing, clips, as convenient and efficient connecting components, play a vital role in vehicle assembly. For automotive interior and exterior panels, trim parts, and functional components, the application of clips avoids the increased weight, higher costs, and additional damage to the vehicle body structure caused by welding and bolting. They also facilitate subsequent maintenance and parts replacement, making them a key element in achieving lightweighting and streamlined assembly in automobiles.

[0025] Among various types of snap fasteners, the female-female plastic snap fastener is widely used due to its excellent connection performance. One known type of female-female plastic snap fastener comprises two parts: a female snap 100 and a female snap 200. For example... Figure 1 As shown, one end of the buckle 100 is provided with a locking head 110, and the other end is provided with a locking expansion part 120, and the locking expansion part 120 is provided with an annular locking groove 121. Figures 2-4 As shown, a female buckle mounting hole 240 is provided through the axis of the female buckle 200. One end of the female buckle 200 is provided with a top cap 210, and the other end is provided with an annular claw 230. A side wall opening 250 is provided on the side wall of the female buckle 200, and a locking foot 220 is provided in the opening. The locking foot 220 is normally inclined upward. The side of the locking foot 220 facing the annular claw 230 is connected to the side wall of the female buckle 200. This structure allows the locking foot 220 to retract inward. Specifically, the female buckle 200 is tightly engaged with the pre-drilled hole of the body 300 through the cooperation of the top cap 210 and the locking foot 220, thereby fixing it to the body 300. The annular claw 230 is used to engage with the annular groove 121 on the expansion part 120 of the female buckle 100 to form a stable connection. Figures 5-7 As shown, the sub-buckle 100 is connected to the decorative part 400 through the clip head 110. When the sub-buckle 100 is inserted into the sub-buckle mounting hole 240 and engaged with the annular claw 230 of the female buckle 200, the decorative part 400 can be firmly fixed to the body 300.

[0026] In addition, this article defines the direction as follows: the end of the female buckle 200 with the top cap 210 is "up", and the end with the ring claw 230 is "down". This definition is consistent throughout the article and will not be repeated hereafter.

[0027] The latch 220 has a groove 221 on the side facing the top cap 210. The bottom surface 222 of the groove 221 is inclined downwards, meaning that the angle θ1 between the bottom surface 222 of the groove 221 on the latch 220 of the female buckle 200 and the axis of the female buckle 200 is an acute angle. Specifically, the angle θ1 refers to the angle formed between the plane containing the bottom surface 222 of the groove 221 and the axis of the female buckle 200 from the latch 220 to the annular claw 230. In addition, the inner diameter of the end of the annular claw 230 of the female buckle 200 away from the latch 220 (i.e., the inner diameter of the bottommost part of the female buckle 200) is 'a'.

[0028] When disassembling decorative component 400, the female clip 100 and the female clip 200 must be separated first, and then the female clip 200 must be removed. In existing technology, traditional tools such as a V-notch pry bar 500 are generally used to remove the female clip 200. Figure 8 As shown; however, the existing technology has obvious defects: First, traditional tools rely on the lever principle to pry up the female buckle 200, which requires the female buckle 200's locking foot 220 to be squeezed and contracted by the mounting hole of the body 300. This process can easily cause the female buckle 200 to deform and be damaged due to uneven force. At the same time, the mounting hole of the body 300 will be worn due to continuous friction, affecting the installation accuracy and reliability of subsequent parts. Second, the tool needs to be inserted into the lower side of the female buckle 200 along the mounting surface of the body 300, which will cause friction with the mounting surface of the body 300 and easily scratch the surface of the body 300, affecting the appearance of the vehicle. Third, the tool is difficult to apply disassembly force accurately, making it difficult to disassemble the female buckle 200, and the process is time-consuming and laborious.

[0029] Based on this, this application proposes a buckle removal tool. By designing a removal head 640 including a rod 641, a locking block 642, and a locking platform 643, the rod 641 can be inserted into the female buckle mounting hole 240 of the female buckle 200. The locking block 642 is embedded in the groove 221 of the locking foot 220, and the locking foot 220 is forced to retract inward by the inclined pressing surface 642a. At the same time, the locking platform 643 engages with the annular locking claw 230 to remove the female buckle 200. The entire process does not contact the surface of the vehicle body 300, achieving efficient and safe removal of the female buckle 200. This solves the problems of difficult removal, easy damage to the buckle, scratching of the vehicle body 300, and wear on the mounting hole of the vehicle body 300 that exist when removing the female buckle 200 with traditional tools.

[0030] In the following, embodiments of this application will be described in detail with reference to the accompanying drawings.

[0031] As attached Figures 9 to 17 As shown in an illustrative embodiment of this application, a buckle removal tool 600 is disclosed. This buckle removal tool 600 is used to remove the female buckle 200 mentioned in the prior art. Specifically, the female buckle 200 includes a male buckle mounting hole 240, a locking foot 220 and an annular locking claw 230, and the locking foot 220 is provided with a groove 221, the bottom surface 222 of the groove 221 is obliquely downward.

[0032] In some embodiments, the snap-locking tool 600 includes a disassembly head 640, which is the core component of the snap-locking tool 600. Its function is to insert into the female snap-lock 200 to separate the female snap-lock 200 from the reserved hole on the vehicle body 300.

[0033] In some embodiments, such as Figure 10 As shown, the disassembly head 640 includes a insertion rod 641 for insertion into the female buckle mounting hole 240 of the female buckle 200, providing a basis for the positioning and operation of the disassembly head 640 within the female buckle 200.

[0034] In some embodiments, the disassembly head 640 includes a locking block 642 fixedly disposed on the outer side wall of the insertion rod 641. The shape of the locking block 642 is adapted to the groove 221 of the locking foot 220, and is used to embed into the groove 221 of the locking foot 220. By engaging with the bottom surface 222 of the groove 221, the locking block 642 applies an inward force to the locking foot 220, thereby squeezing the locking foot 220 and causing it to retract towards the axis of the female buckle 200, so that the female buckle 200 disengages from the pre-drilled hole in the vehicle body 300. Furthermore, the number of locking blocks 642 is the same as the number of locking feet 220 of the female buckle 200, and the locking blocks 642 correspond one-to-one with the grooves 221 on the locking feet 220 of the female buckle 200.

[0035] When the insert rod 641 is inserted into the female buckle mounting hole 240 from the side of the female buckle 200 away from the annular claw 230, the locking block 642 presses the locking foot 220 to cause the locking foot 220 to retract into the female buckle 200.

[0036] In some embodiments, the disassembly head 640 includes a locking platform 643, which is integrally disposed at one end of the insertion rod 641 for insertion into the female buckle mounting hole 240. The shape of the locking platform 643 is adapted to the annular claw 230 of the female buckle 200, and is used to form a stable engagement with the annular claw 230 during disassembly. When the locking foot 220 retracts to disengage the female buckle 200 from the reserved hole in the vehicle body 300, the female buckle 200 can be removed together with the tool by the locking platform 643, ensuring that the female buckle 200 can be disassembled smoothly.

[0037] In some embodiments, the insertion rod 641, the locking block 642, and the locking platform 643 are integrally formed.

[0038] In addition, this article defines direction as follows: if the end of the buckle removal tool 600 with the buckle platform 643 is the "lower" of the buckle removal tool 600, then the end away from the buckle platform 643 is the "upper" of the buckle removal tool 600. This definition is consistent throughout the article and will not be repeated hereafter.

[0039] In the above embodiments, this application designs a disassembly head 640 that includes a plug 641, a locking block 642, and a locking platform 643, so that the buckle disassembly tool 600 can be directly inserted into the female buckle 200 without contacting the surface of the vehicle body 300 throughout the process, thus avoiding scratches on the vehicle body 300 from the source.

[0040] like Figures 14-17As shown, the specific disassembly process is as follows: First, align the locking block 642 with the groove 221 on the female buckle 200 one by one to ensure accurate positioning; then, insert the locking platform 643 of the buckle removal tool 600 into the female buckle 200 from above (i.e., the end with the top cap 210) into the female buckle mounting hole 240. During insertion, the locking block 642 gradually embeds into the groove 221 of the female buckle 200's locking foot 220. As the insertion depth increases, the locking block 642 applies a force to the locking foot 220 in the direction of the female buckle 200's axis, forcing the locking foot 220 to retract inward. When the buckle removal tool 600 is fully inserted into the female buckle 200, the locking foot 220 of the female buckle 200 has retracted inward to a suitable degree. Specifically, at this time, the maximum diameter of the locking foot 220 is less than or equal to the diameter of the reserved hole on the vehicle body 300, thus releasing the locking relationship between the female buckle 200 and the reserved hole on the vehicle body 300.

[0041] At the same time, the locking platform 643 of the clip removal tool 600 and the annular claw 230 of the female clip 200 are precisely engaged, and the locking platform 643 can apply an upward lifting force to the female clip 200. At this time, simply pull the clip removal tool 600 outward to pull the female clip 200 away from the vehicle body 300, thus achieving the smooth removal of the female clip 200.

[0042] This design cleverly utilizes the synergistic effect of each component to effectively solve the problems of disassembly difficulties, easy damage to the clip, scratches on the body 300, and wear on the mounting holes of the body 300 that exist when using traditional tools to disassemble the female clip 200. It significantly improves disassembly efficiency and operational safety, while ensuring the integrity of the female clip 200 and the mounting holes of the body 300, which is conducive to the reinstallation of subsequent parts.

[0043] In some embodiments, a plurality of locking blocks 642 are symmetrically arranged on the outer periphery of the insert rod 641 with the axis of the insert rod 641 as the center, and correspond one-to-one with the locking feet 220 of the female buckle 200.

[0044] In some embodiments, there are two locking blocks 642, which are also symmetrically distributed along the outer periphery of the insertion rod 641 and can precisely engage with the two locking feet 220 correspondingly provided on the female buckle 200.

[0045] In some embodiments, the diameter of the insertion rod 641 is less than or equal to the inner diameter of the annular claw 230 on the side away from the locking foot 220. Specifically, the diameter of the insertion rod 641 is less than or equal to the inner diameter of the bottommost end of the female buckle 200.

[0046] In the above embodiments, this application limits the diameter of the insertion rod 641 to be less than or equal to the inner diameter of the annular claw 230 on the side away from the locking foot 220. This ensures that the insertion rod 641 can be smoothly inserted into the female buckle 200 to the preset position, ensuring that the locking platform 643 and the annular claw 230 can accurately and firmly achieve locking, avoiding the locking effect caused by the insertion rod 641 being too thick and unable to be in place. It also makes it easier to remove the female buckle 200 from the buckle removal tool 600.

[0047] In some embodiments, the side of the card block 642 facing the card table 643 is a pressing surface 642a, which extends obliquely from its connection with the insertion rod 641 toward the side closer to the card table 643.

[0048] In the above embodiments, this application specifies that the side of the card block 642 facing the card platform 643 is an inclined pressing surface 642a. This structural design enables the pressing surface 642a to precisely match the bottom surface 222 of the groove 221 of the card foot 220 during the insertion of the card block 642 into the groove 221. The component force generated by the inclined angle applies an inward pressing force to the card foot 220, ensuring that the card foot 220 reliably retracts.

[0049] In some embodiments, the angle θ2 formed by the pressing surface 642a and the axis of the insert rod 641 is 10° larger than the angle θ1 formed by the bottom surface 222 of the groove 221 and the axis of the sub-buckle mounting hole 240. This angle difference allows the pressing surface 642a to form a gentle wedge fit with the bottom surface 222 of the groove 221. During the insertion of the buckle removal tool 600, the pressing force is applied to the buckle foot 220 gradually, which ensures that the buckle foot 220 retracts sufficiently to disengage from the pre-drilled hole in the vehicle body 300, while minimizing the impact force on the buckle foot 220 and reducing the risk of deformation of the buckle foot 220 due to excessive force. This is suitable for scenarios with high requirements for buckle protection.

[0050] In some embodiments, the angle θ2 formed by the pressing surface 642a and the axis of the insert rod 641 is 20° larger than the angle θ1 formed by the bottom surface 222 of the groove 221 and the axis of the female buckle mounting hole 240. The wedge effect caused by this angle difference is more obvious. This design allows the locking foot 220 to quickly obtain a larger retraction force during the insertion of the buckle removal tool 600, thereby accelerating the retraction speed of the locking foot 220 and improving the disassembly efficiency of the female buckle 200. It is especially suitable for scenarios where the buckle is tightly engaged and a larger force is required to retract the locking foot 220, ensuring both disassembly effectiveness and ease of operation.

[0051] In some embodiments, the angle θ2 formed by the pressing surface 642a and the axis of the insert rod 641 is 10° to 20° larger than the angle θ1 formed by the bottom surface 222 of the groove 221 and the axis of the sub-buckle mounting hole 240. Here, angle θ2 refers to the angle formed between the plane containing the pressing surface 642a of the latch block 642 and the axis of the latch disassembly tool 600 from the latch block 642 to the latch platform 643.

[0052] Furthermore, the angle θ2 between the pressing surface 642a at the bottom of the card block 642 and the axis of the buckle removal tool 600 is an acute angle.

[0053] In the above embodiments, the angle between the pressing surface 642a and the axis of the insert rod 641 is 10° to 20° larger than the angle between the bottom surface 222 of the groove 221 and the axis of the female buckle mounting hole 240. This angle difference allows the pressing surface 642a and the bottom surface 222 of the groove 221 to form a wedge fit, gradually increasing the radial pressing force on the locking foot 220 during insertion. This ensures that the locking foot 220 fully retracts to disengage from the mounting hole, while avoiding stress concentration at the root of the locking foot 220 due to excessive angle, thus improving the protection effect on the female buckle 200 locking foot 220.

[0054] If the angle difference is less than 10°, the wedge fit effect will be significantly weakened. The contact pressure between the extrusion surface 642a and the bottom surface 222 of the groove 221 increases slowly, resulting in insufficient radial extrusion force on the clamping foot 220. This may cause the clamping foot 220 to not shrink sufficiently and fail to disengage smoothly from the mounting hole, thereby increasing the disassembly resistance. It may even require additional external force to forcibly pull, which may easily cause the clamping foot 220 to deform or break.

[0055] If the angle difference exceeds 20°, the wedge effect will be too strong. The radial force generated when the extrusion surface 642a contacts the bottom surface 222 of the groove 221 will increase sharply, and the force will be concentrated at the root of the clamp 220. Since the clamp 220 is usually an elastic structure, the root is a weak stress area. An excessive angle difference will cause the stress at this point to instantly exceed the material's bearing limit, which can easily cause the root of the clamp 220 to crack or break directly, seriously affecting the reusability of the female buckle 200. At the same time, excessive force may also cause the disassembly tool to slip off from the buckle, increasing the operational risk.

[0056] In some embodiments, the latch 643 includes a latching portion 643b and a frustum portion 643c, wherein the frustum portion 643c is integrally disposed below the latching portion 643b (i.e., on the side away from the insertion rod 641), and the diameter of the frustum portion 643c gradually decreases from the end connected to the latching portion 643b to the other end; the side of the latching portion 643b near the insertion rod 641 is smoothly connected to the end of the insertion rod 641 through a slope 643a. In this structural design, the frustum 643c guides the snap-fit ​​part 643b to smoothly disengage from the annular jaw 230 of the female buckle 200, and allows the snap-fit ​​part 643b to engage with the annular jaw 230. At this time, the inclined surface 643a and the annular jaw 230 are in contact with each other, and the inclined surface 643a can provide an upward force to the female buckle 200. The frustum 643c plays a guiding role when the disassembly tool is inserted, reducing the insertion resistance. At the same time, the snap-fit ​​engagement between the snap-fit ​​part 643b and the annular jaw 230 can ensure stable support for the female buckle 200 during disassembly, thus improving the overall compatibility and smoothness of operation between the tool and the female buckle 200.

[0057] In the above embodiments, the card platform 643 is configured as a card receiving part 643b and a frustum part 643c, and the card receiving part 643b is connected to the insertion rod 641 through the inclined surface 643a. On the one hand, the structure of the card platform 643 is refined, and on the other hand, a reasonable structural basis is provided for the card receiving part 643 and the annular claw 230 to be connected, making the connection more stable.

[0058] In some embodiments, the snap-fit ​​portion 643b has a cylindrical structure.

[0059] In some embodiments, the frustum portion 643c has a frustum-shaped structure.

[0060] In some embodiments, the inclined surface 643a extends obliquely from its connection with the insertion rod 641 toward the side near the frustum portion 643c; specifically, the inclined surface 643a is disposed obliquely downward.

[0061] In some embodiments, the angle θ3 formed by the inclined surface 643a and the axis of the disassembly head 640 is 45°, and the inclination of the inclined surface 643a is relatively steep. With this angle design, the snap-fit ​​part 643b can provide relatively stable support for the female buckle 200, and after disassembly, the female buckle 200 is easier to separate from the tool. This is suitable for scenarios with high requirements for disassembly speed, and can also ensure the snap-fit ​​effect while taking into account the ease of disassembly.

[0062] In some embodiments, the angle θ3 formed by the inclined surface 643a and the axis of the disassembly head 640 is 65°. This angle design makes the contact area between the locking part 643b and the annular claw 230 larger, the locking process is smoother, and a more stable locking relationship can be formed. It can provide greater upward lifting force and make it easier to remove the female buckle 200. It is especially suitable for scenarios with high requirements for locking reliability. At the same time, it can also make the female buckle 200 more easily detach from the tool after disassembly, saving effort in operation.

[0063] In some embodiments, the angle θ3 formed by the inclined plane 643a and the axis of the disassembly head 640 is 55°, which combines the advantages of gentleness and steepness. This ensures a stable and reliable engagement between the locking part 643b and the annular claw 230, guaranteeing a secure removal of the female buckle 200 during disassembly and preventing it from falling off. Simultaneously, it allows the female buckle 200 to easily separate from the tool under appropriate force after disassembly, without requiring additional effort. This angle design achieves a better balance between engagement strength and ease of disassembly, making it suitable for most common disassembly scenarios, offering greater versatility, and further optimizing the user experience.

[0064] In some embodiments, the angle θ3 formed by the inclined surface 643a and the axis of the disassembly head 640 is 45° to 65°. Here, the angle θ3 refers to the angle formed between the curved surface where the inclined surface 643a is located and the axis of the clip disassembly tool 600 from the bottom end of the insertion rod 641 to the bottom end of the clip table 643.

[0065] In the above embodiments, this application specifies that the inclined surface 643a extends inclinedly towards the side near the frustum portion 643c and forms an angle of 45° to 65° with the axis of the disassembly head 640. The design of the inclined surface 643a within this angle range can ensure that the locking portion 643b and the annular claw 230 form an effective locking, ensuring that the female buckle 200 can be reliably removed during disassembly, and also make it easy for the female buckle 200 to be detached from the tool after disassembly, thus balancing the locking firmness and the disassembly convenience.

[0066] If the angle θ3 formed by the inclined plane 643a and the axis of the disassembly head 640 is less than 45°, the inclination of the inclined plane 643a will be too steep. In this case, the contact area between the inclined plane 643a and the annular claw 230 will be significantly reduced, making it difficult to form a stable support point and providing sufficient upward lifting force for the female buckle 200. This will cause the female buckle 200 to easily detach from the disassembly tool during removal, not only affecting disassembly efficiency but also potentially leading to secondary operations or damage from falling parts due to accidental detachment of the female buckle 200.

[0067] If the included angle θ3 is greater than 65°, the inclination of the inclined plane 643a will be too gentle, resulting in an excessively large contact area and a tight fit between the inclined plane 643a and the annular claw 230. In this case, although the female buckle 200 can be stably lifted to complete the disassembly, after removing the female buckle 200, the excessive clamping force between the two will make it difficult to separate the female buckle 200 from the disassembly tool, increasing the difficulty of subsequent operations and also affecting the overall work efficiency.

[0068] In some embodiments, the diameter b of the locking portion 643b is 0.4 mm larger than the inner diameter a of the annular claw 230 on the side away from the locking foot 220, which is a relatively small dimensional difference design. This arrangement enables a weaker lifting engagement between the locking portion 643b and the annular claw 230, ensuring that the female buckle 200 will not easily fall off during disassembly and that the female buckle 200 can be easily removed from the tool after disassembly. This is especially suitable for scenarios where ease of separation after disassembly is required, while also reducing squeezing damage to the annular claw 230.

[0069] In some embodiments, the diameter b of the locking portion 643b is 1.6 mm larger than the inner diameter a of the annular claw 230 on the side away from the locking foot 220, which is a relatively large dimensional difference design within this range. This arrangement can form a more secure locking fit, providing stronger lifting force for the female buckle 200, and can effectively cope with scenarios where the female buckle 200 is subjected to greater force or accidental pulling during disassembly, ensuring that the female buckle 200 can be stably removed with the tool and avoiding the risk of falling off.

[0070] In some embodiments, the diameter b of the snap-fit ​​portion 643b is 1 mm larger than the inner diameter a of the annular claw 230 on the side away from the locking foot 220, which is in the middle of the dimensional difference range. This design balances snap-fit ​​stability with ease of separation after disassembly. It can reliably fix the female buckle 200 to complete the disassembly operation without making the female buckle 200 difficult to remove due to excessive snap-fit. It is suitable for most common disassembly scenarios and has wide applicability.

[0071] In some embodiments, the diameter b of the snap-fit ​​portion 643b is 0.4 mm to 1.6 mm larger than the inner diameter a of the annular claw 230 on the side away from the snap foot 220 (i.e., the inner diameter of the bottommost end of the female buckle 200).

[0072] In the above embodiments, the diameter b of the snap-fit ​​portion 643b is specified to be 0.4 mm to 1.6 mm larger than the inner diameter a of the annular claw 230 on the side away from the claw foot 220. This size difference range can achieve a proper fit between the snap-fit ​​portion 643b and the annular claw 230, which not only ensures the stability of the snap-fit ​​between the two and prevents the female buckle 200 from falling off during disassembly, but also makes it easy to remove the female buckle 200 from the tool after disassembly.

[0073] If the difference between the diameter b of the snap-fit ​​part 643b and the inner diameter a of the annular claw 230 on the side away from the snap foot 220 is less than 0.4 mm, the fit between the two is too loose and cannot form an effective snap-fit ​​force. During the disassembly process, the female buckle 200 is prone to separate from the tool, which will prevent the female buckle 200 from being removed smoothly, affecting the disassembly efficiency or even causing the parts to fall and be damaged.

[0074] If the difference between the diameter b of the snap-fit ​​part 643b and the inner diameter a of the annular claw 230 on the side away from the clamping foot 220 is greater than 1.6 mm, the snap-fit ​​will be too tight, which will make it difficult to separate the female buckle 200 from the tool after disassembly, increasing the difficulty of subsequent operations and even requiring additional tools, thus reducing work efficiency.

[0075] In some embodiments, the snap-locking tool 600 includes a handle 620, which has a cylindrical structure for easy gripping.

[0076] In the above embodiments, this application adds a handle 620 to facilitate the operator's grip on the tool, improve the convenience and stability of operation, reduce operational errors caused by unstable grip, and further improve disassembly efficiency. In some embodiments, one end of the handle 620 is connected to the disassembly head 640 via a connecting part 630. The connecting part 630, the handle 620, and the disassembly head 640 all have a smooth arc transition. The diameter of the connecting part 630 is smaller than the diameter of the handle 620 and larger than the diameter of the insertion rod 641.

[0077] In the above embodiments, this application achieves the connection between the handle 620 and the insertion rod 641 through the connecting part 630 with a diameter between the handle 620 and the insertion rod 641, which plays a smooth transition role, avoids stress concentration caused by direct connection between the handle 620 and the insertion rod 641, enhances the strength and durability of the overall structure of the tool, and extends the service life of the tool.

[0078] In some embodiments, a pressing part 610 is provided at the end of the handle 620 away from the disassembly head 640; the pressing part 610 is designed not only to relieve pressure by increasing the contact area with the hand when using the tool, but also to increase resistance when removing the tool, effectively preventing it from slipping out of the hand.

[0079] In the above embodiments, a pressing part 610 is provided at the end of the handle 620 away from the disassembly head 640, which increases the contact area between the hand and the handle 620, effectively dispersing the pressure during operation and relieving hand fatigue; at the same time, it increases the resistance when taking out the tool, preventing it from slipping out of the hand and improving the safety of operation.

[0080] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A buckle disassembly tool for disassembling a female buckle (200), the female buckle (200) comprising a male buckle mounting hole (240), a locking foot (220), and an annular locking claw (230), the male buckle mounting hole (240) being disposed through the axis of the female buckle (200), the annular locking claw (230) being disposed on one side of the female buckle (200), the locking foot (220) being disposed on the outer side wall of the female buckle (200), and the locking foot (220) being provided with a groove (221); characterized in that, The buckle removal tool (600) includes a removal head (640), which includes: Insert rod (641), the insert rod (641) being used to insert into the sub-buckle mounting hole (240); A locking block (642) is disposed on the insert rod (641) and is used to be embedded in the groove (221) of the locking foot (220); When the insert rod (641) is inserted into the female buckle mounting hole (240) from the side of the female buckle (200) away from the annular claw (230), the locking block (642) squeezes the locking foot (220) to cause the locking foot (220) to retract into the female buckle (200).

2. The buckle disassembly tool according to claim 1, characterized in that, The disassembly head (640) also includes a locking platform (643), which is disposed at one end of the insert rod (641) for insertion into the sub-buckle mounting hole (240); the locking platform (643) is used to engage with the annular claw (230).

3. The buckle disassembly tool according to claim 1, characterized in that, The number of the locking blocks (642) is equal to the number of the locking feet (220) of the female buckle (200) and they correspond one-to-one.

4. A buckle disassembly tool according to claim 1, characterized in that, The side of the card block (642) facing the card table (643) is a pressing surface (642a), which extends obliquely from its connection with the insertion rod (641) toward the side closer to the card table (643).

5. A buckle disassembly tool according to claim 4, characterized in that, The angle formed by the extrusion surface (642a) and the axis of the insertion rod (641) is 10°~20° larger than the angle formed by the bottom surface (222) of the groove (221) and the axis of the sub-buckle mounting hole (240).

6. A buckle disassembly tool according to claim 1, characterized in that, The locking platform (643) includes a locking part (643b) and a frustum part (643c); the locking part (643b) is connected to the insertion rod (641) via an inclined surface (643a).

7. A buckle disassembly tool according to claim 6, characterized in that, The inclined surface (643a) extends obliquely from its connection with the insert (641) toward the side closer to the frustum (643c); The angle between the inclined plane (643a) and the axis of the disassembly head (640) is 45°~65°.

8. A buckle disassembly tool according to claim 7, characterized in that, The diameter of the latching part (643b) is 0.4 mm to 1.6 mm larger than the inner diameter of the annular claw (230) on the side away from the latch foot (220).

9. A buckle disassembly tool according to any one of claims 1 to 8, characterized in that, The buckle removal tool (600) includes a handle (620), one end of which is connected to the removal head (640) via a connecting part (630).

10. A buckle disassembly tool according to claim 9, characterized in that, A pressing part (610) is provided at the end of the handle (620) away from the disassembly head (640).

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