A sliding self-locking fastener installation tool and installation method

Abstract

The application relates to the technical field of mounting tools, and particularly discloses a sliding self-locking fastener mounting tool and a mounting method; the tool comprises a mounting sleeve and an operating handle arranged in the mounting sleeve and capable of sliding displacement based on the mounting sleeve; the mounting sleeve comprises a sliding pipe and a first chuck arranged at one end of the sliding pipe; the sliding pipe is provided with a sliding channel arranged in a penetrating mode and used for sliding displacement of the operating handle; the operating handle comprises a sliding handle and a second chuck arranged at one end of the sliding handle; the second chuck is provided with a first placing groove used for placing a fastener, and the first placing groove is provided with a avoiding hole; the first chuck and the second chuck are close to each other to form a second placing groove used for placing the fastener. In the application, the stable clamping effect after the chuck is closed enables the nut to smoothly complete preliminary engagement with the screw after being moved into the product, and the problems of difficult alignment under blind mounting conditions, difficult operation during mounting and fastener falling are solved.

Description

Technical Field

[0001] This invention relates to the field of installation tool technology, and in particular to a sliding self-locking fastener installation tool and installation method. Background Technology

[0002] As electronic devices, aerospace equipment, and high-density miniature connectors become increasingly miniaturized and precise, their internal installation space is being compressed to its limits. Fastener installation operations often need to be completed in narrow, inaccessible, or even inaccessible spaces where conventional tools cannot be used. Taking micro-rectangular connectors as an example, their installation typically requires installing small fastener components such as nuts, flat washers, and spring washers at the rear end of the connector flange. However, due to the large number, small size, and dispersed structure of the fasteners, existing tools are clearly insufficient for sequentially clamping and installing these fastening components in confined spaces.

[0003] Please see Figure 14 In traditional methods, nuts, flat washers, and spring washers must be held and placed one by one using tweezers. However, due to the extremely small size of the fasteners and the unstable grip, even slight shaking can cause them to slip out of the tweezers and fall into the product. Foreign object debris (FOD) is not only difficult to remove, but in severe cases, disassembly of the equipment is required to eliminate the hazard, significantly reducing assembly efficiency and reliability. Furthermore, tweezers can easily interfere with the connector housing during operation, causing the fasteners to misalign and making it difficult for the screw to enter the nut end face, thus hindering the initial engagement process. Maintaining axial concentricity between the nut and screw is particularly challenging under blind assembly conditions.

[0004] Please see Figure 12 and Figure 13 To adapt to complex installation environments, some solutions use small wrenches or thin-walled sockets for clamping and tightening. However, these tools still require a large operating space, and their outer dimensions are often larger than the internal clearance of the product, preventing the tool from reaching the installation position. Furthermore, thin-walled sockets lack strength, are prone to deformation, have a short lifespan, and typically cannot reliably limit and clamp fasteners, making them susceptible to misalignment or detachment during installation. More critically, existing tools cannot actively open to release the nut after the fastener is tightened; they often become stuck after the nut is fully tightened, requiring the screw to be loosened in the opposite direction to remove the tool, resulting in rework and instability risks.

[0005] In summary, existing technologies generally suffer from the following problems: traditional tools are prone to structural interference in confined spaces, making it impossible to install fasteners; small fasteners such as nuts, flat washers, and spring washers are difficult to hold stably and are prone to falling off and forming excess material; fasteners are difficult to keep axially aligned with screws, making initial engagement difficult; multiple tools need to be changed during installation, making the operation cumbersome and inefficient; and tools are difficult to disengage after fasteners are locked, posing a risk of jamming and affecting reliability.

[0006] Therefore, there is an urgent need for an installation tool that can achieve integrated clamping, alignment, initial engagement, final locking, and active disengagement of fasteners in the confined space inside a product, in order to solve the above-mentioned technical difficulties and improve the efficiency, stability, and reliability of fastener installation. Summary of the Invention

[0007] In view of this, embodiments of the present invention provide a sliding self-locking fastener installation tool and installation method to solve the technical problems of being unable to stably clamp, reliably align and effectively lock small fasteners in confined spaces, and the fasteners being prone to falling off during installation, the tool being difficult to penetrate the installation area and difficult to detach smoothly after the nut is locked.

[0008] In a first aspect, embodiments of the present invention provide a sliding self-locking fastener installation tool, comprising:

[0009] A mounting sleeve, and an operating handle disposed within the mounting sleeve and capable of sliding displacement based on the mounting sleeve;

[0010] The mounting sleeve includes a sliding tube and a first clamp disposed at one end of the sliding tube; the sliding tube is provided with a sliding channel that is through and used for the sliding displacement of the operating handle.

[0011] The operating handle includes a sliding handle and a second clamp disposed at one end of the sliding handle; the second clamp is provided with a first placement groove for placing the fastener, and the first placement groove is provided with a clearance hole.

[0012] When the first chuck and the second chuck are brought close together, they form a second placement groove for placing the fastener.

[0013] Preferably, one end of the sliding handle is further provided with a handle, and the handle is provided with threads.

[0014] Preferably, a washer and a return spring are fitted onto the handle, with one end of the return spring abutting against the washer;

[0015] The sliding tube is provided with a limiting step, and the limiting step restricts the extreme movement position of the gasket.

[0016] A pressure head button is also connected to the handle via the thread; the other end of the return spring abuts against the bottom of the pressure head button, and is compressed or released by the movement of the pressure head button to push the operating handle to slide inside the sliding tube;

[0017] The pressure head button includes a pressing block and a connecting cylinder integrally formed with the pressing block. The connecting cylinder has an internal thread that matches the thread to connect with the handle. The top of the pressing block has a slot.

[0018] Preferably, the first chuck includes a main body and a clamping part disposed on one side of the top of the main body, and the top of the main body is provided with a handle groove;

[0019] The second clamp includes a first limiting block and a second limiting block, and the first placement groove is formed between the first limiting block and the second limiting block;

[0020] The height of the first limiting block is higher than that of the second limiting block, and is adapted to the height of the clamping part.

[0021] Preferably, the inner surfaces of the first limiting block and the second limiting block are respectively provided with a first set of limiting surfaces and a second set of limiting surfaces;

[0022] The portion of the first limiting block that is higher than the second limiting block is provided with a third set of limiting surfaces, and the clamping part is provided with a fourth set of limiting surfaces at the position corresponding to the third set of limiting surfaces. The second placement groove is disposed between the third set of limiting surfaces and the fourth set of limiting surfaces.

[0023] The clamping part is provided with a first set of wedge surfaces and a second set of wedge surfaces on the two sides adjacent to the fourth set of limiting surfaces, and the part of the first limiting block that is higher than the second limiting block is provided with a third set of wedge surfaces corresponding to the second set of wedge surfaces.

[0024] Preferably, the displacement distance between the pressure head button and the sliding tube is less than the maximum relative sliding distance between the top surface of the second limiting block and the first clamp.

[0025] Preferably, the bottom of the clamping part is provided with a first sliding surface, and the top of the second limiting block is provided with a second sliding surface. The first sliding surface and the second sliding surface are in contact and can slide relative to each other.

[0026] Preferably, the sliding tube includes an integrally formed first diameter tube section and a second diameter tube section, wherein the diameter of the first diameter tube section is larger than the diameter of the second diameter tube section;

[0027] A transition slope is provided at the connection between the first diameter tube section and the second diameter tube section.

[0028] The first diameter tube section and the second diameter tube section are provided with sliding channels of the same diameter that are connected to each other.

[0029] Secondly, a method for installing a sliding self-locking fastener installation tool is provided, including:

[0030] The sliding handle is inserted through one end of the second diameter tube of the sliding tube, so that the first sliding surface of the first chuck and the second sliding surface of the second chuck are engaged, thereby allowing the sliding handle to slide along the axial direction of the sliding tube and restricting its rotation.

[0031] Install a washer and a return spring in sequence at the limiting step of the sliding tube, and screw the pressure head button onto the thread on the handle to put the compression spring in a pre-compressed state so that the end face of the pressure head button and the end face of the sliding tube form the maximum gap and put the first chuck and the second chuck in a closed state.

[0032] Press the pressure head button to drive the sliding handle to move along the axial direction of the sliding tube, thereby increasing the distance between the second chuck and the first chuck, and thus putting the first chuck and the second chuck in the open state.

[0033] With the first and second chucks open, insert the fastener into the second chuck in sequence, then release the pressure head button to reset the return spring and drive the first and second chucks to close, so that the fastener is clamped and held in the preset position.

[0034] Preferred options also include:

[0035] Move the installation tool holding the fastener to the target installation position, insert the screw into the fastener, and initially tighten the screw to make the screw and fastener initially engage;

[0036] After the screw and fastener are initially engaged, continue to tighten the screw so that the fastener contacts the second set of wedge surfaces in the first collet in sequence under the axial pushing force of the screw, and under the guiding action of the second set of wedge surfaces, the distance between the first collet and the second collet begins to increase.

[0037] As the screw is tightened further, the fastener continues to move along the screw's axial direction and abuts against the fourth set of limiting surfaces provided inside the second collet, thereby further increasing the distance between the first collet and the second collet.

[0038] When the screw enters the final tightening stage, the outer periphery of the fastener abuts against the first set of wedge surfaces provided inside the second chuck, and the expansion and guiding effect of the first set of wedge surfaces causes the first chuck and the second chuck to enter a fully open state.

[0039] The screw is finally tightened with the first and second chucks fully open, and the installation tool is removed from the installation position after the fastener is completely disengaged from the limiting area of ​​the first chuck, thus completing the installation of the fastener.

[0040] The sliding self-locking fastener installation tool and installation method provided by this invention have the following beneficial effects:

[0041] In this invention, the stable clamping action after the chuck closes allows the nut to smoothly engage with the screw after moving into the product, significantly reducing the risk of alignment difficulties under blind assembly conditions. Furthermore, after the screw is initially tightened, the contact between the fastener and the wedge-shaped and limiting surfaces allows the fastener to gradually open the chuck during tightening, providing space for further screw tightening and enabling the fastener to achieve final locking without interfering with the chuck. After the fastener is locked, the chuck remains in a stretched state under the tightening force of the fastener, allowing the fastener to automatically and smoothly detach from the installation device, avoiding the jamming or inability to retract of traditional tools after tightening. Therefore, this invention achieves integrated clamping, precise alignment, segmented tightening, and active disengagement of fasteners, significantly improving assembly efficiency, stability, and reliability in confined spaces, while reducing operational difficulty and rework risks. Attached Figure Description

[0042] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the embodiments of the present invention will be briefly introduced below. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort, and these are all within the protection scope of the present invention.

[0043] Figure 1 This is a structural diagram of a sliding self-locking fastener installation tool;

[0044] Figure 2 yes Figure 1 Schematic diagram of the cross-sectional structure at point AA;

[0045] Figure 3 This is an exploded structural diagram of a sliding self-locking fastener installation tool;

[0046] Figure 4 An exploded view of a sliding self-locking fastener installation tool and the fastener.

[0047] Figure 5 This is an exploded view of a sliding self-locking fastener installation tool from another angle;

[0048] Figure 6 yes Figure 5 A partial structural diagram of section B in the middle;

[0049] Figure 7 This is a component composition diagram of a micro rectangular connector.

[0050] Figure 8 This is a cross-sectional view of a sliding self-locking fastener installation tool;

[0051] Figure 9 This is a diagram showing the limiting position of the installation tool on the fastener;

[0052] Figure 10 This is a diagram comparing the sizes of the chucks;

[0053] Figure 11 This is a diagram illustrating the application of the installation tool;

[0054] Figure 12 This is a schematic diagram of a connector being installed using a special sleeve;

[0055] Figure 13 This is a diagram illustrating the installation of a connector using an adjustable wrench;

[0056] Figure 14 This is a schematic diagram of the installation of the micro rectangular connector nut;

[0057] Figure 15 This is a schematic diagram showing the relative changes in the size of the chuck opening;

[0058] Parts and component numbers in the diagram:

[0059] 100-Installation sleeve, 110-Sliding tube, 111-Sliding channel, 112-Limiting step, 113-First diameter tube section, 114-Second diameter tube section, 115-Transition slope, 120-First clamp, 121-Main body section, 122-Hand groove, 123-Clamping part, 124-First sliding surface;

[0060] 200-Operating handle, 210-Sliding handle, 211-Handle, 212-Thread, 220-Second chuck, 221-First placement groove, 222-Allowing hole, 223-Second placement groove, 224-First limiting block, 225-Second limiting block, 226-Second sliding surface, 231-First group of limiting surfaces, 232-Second group of limiting surfaces, 233-Third group of limiting surfaces, 234-Fourth group of limiting surfaces, 235-First group of wedge-shaped surfaces, 236-Second group of wedge-shaped surfaces, 237-Third group of wedge-shaped surfaces;

[0061] 310-shield, 320-reset spring, 330-press head button, 331-pressing block, 332-connecting cylinder, 333-slotted groove;

[0062] 410 - Nut, 420 - Flat washer, 430 - Spring washer. Detailed Implementation

[0063] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. In the description of the present invention, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements, but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Unless otherwise specified, the element defined by the phrase "comprising..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element. Where there is no conflict, embodiments of the present invention and the various features thereof can be combined with each other, all of which are within the scope of protection of the present invention.

[0064] Example 1

[0065] Please see Figure 1 This invention provides a sliding self-locking fastener installation tool. With the continuous improvement of technology in the fields of electronics, machinery, automobiles, aerospace, aviation, and medical, system equipment is gradually developing towards miniaturization and high integration. Therefore, the space available for fastener tools to operate on components fixed by screws, flat washers 420, spring washers 430, and nuts 410 inside the product is getting smaller and smaller during installation.

[0066] Please see Figure 7 To save space, taking micro-rectangular connectors in electronic products as an example (and the following text will use micro-rectangular connectors as an example for further explanation), the gap between the connector body and the fastener is designed to be smaller and smaller. Traditional fastener tools will interfere with the connector insulator during installation, making installation impossible. In addition, in scenarios where connectors are internally mounted, since the installation and removal of connectors occupy a portion of the product's internal space, the operating space for fastener tools is often compressed to the extreme to make room for other functional spaces within the product.

[0067] Please see Figure 1 , Figure 2 and Figure 3 This embodiment provides a sliding self-locking fastener installation tool for installing fasteners in narrow space holes.

[0068] The installation tool includes an installation sleeve 100 and an operating handle 200 disposed within the installation sleeve 100 and capable of sliding displacement based on the installation sleeve 100; the installation sleeve 100 includes a sliding tube 110 and a first clamp 120 disposed at one end of the sliding tube 110; the sliding tube 110 is provided with a sliding channel 111 that is through and used for sliding displacement of the operating handle 200; the operating handle 200 includes a sliding handle 210 and a second clamp 220 disposed at one end of the sliding handle 210; the second clamp 220 is provided with a first placement groove 221 for placing the fastener, and the first placement groove 221 is provided with a clearance hole 222; when the first clamp 120 and the second clamp 220 are close together, a second placement groove 223 for placing the fastener is formed.

[0069] In use, the operator holds the installation sleeve 100 and slides the operating handle 200 axially within the sliding channel 111 by pressing or pulling it, thereby controlling the positional relationship between the first chuck 120 and the second chuck 220, and opening and closing the chuck openings. When the operating handle 200 is driven away from the first chuck 120, the gap between the first chuck 120 and the second chuck 220 increases, and the two placement slots are open. At this time, fasteners such as nuts 410, flat washers 420, and spring washers 430 can be sequentially placed into the first placement slot 221 on the second chuck 220 and the second placement slot 223 formed between the two chucks. Then, the operating handle 200 is released, causing it to move back towards the first chuck 120 under the action of the reset elastic element, thereby closing the two chucks and firmly securing the fasteners in the combination structure of the first placement slot 221 and the second placement slot 223, preventing the fasteners from falling off during movement or handling.

[0070] Please see Figure 4After the fastener is reliably clamped by the tool, the operator moves the entire installation tool to the expected installation position, aligning the fastener with the screw to be installed. With the chuck closed, the operator tightens the screw, allowing it to pass through the clearance hole 222 and then sequentially through the flat washer 420 and the spring washer 430 before screwing it into the nut 410, thus achieving initial installation and pre-locking of the fastener. Once the fastener reaches the initial engagement state, the operator drives the operating handle 200 again, increasing the distance between the first chuck 120 and the second chuck 220, fully opening the chuck. At this point, the fastener is locked by the screw and no longer needs to be held in place by the chuck, allowing it to be released from the chuck's envelope. The operator can then remove the installation tool from the fastener, completing the entire fastener installation operation. With this configuration, the installation tool can perform integrated clamping, handling, alignment, screw insertion, and locking of the nut 410, flat washer 420, and spring washer 430 within a confined internal space, significantly improving installation efficiency.

[0071] Specifically, please see Figure 3 and Figure 4 The mounting sleeve 100 serves as the main housing of the entire installation tool. Its front end is equipped with a first chuck 120, and an internal sliding channel 111 is formed to accommodate and guide the operating handle 200 to slide linearly along the axial direction. The sliding tube 110 not only restricts the movement direction of the operating handle 200, preventing rotational deviation, but also provides hand support, ensuring stable maneuverability of the entire tool in confined spaces. By providing the sliding channel 111, the mounting sleeve 100 ensures that the opening and closing actions remain linear and controllable, thereby improving the accuracy of the chuck's opening and closing and ensuring that the fastener remains in the expected position during loading and installation. This structure effectively improves the stability and operational reliability of the installation tool.

[0072] Specifically, the operating handle 200 consists of a sliding handle 210 and a second clamp 220 located at its front end. By cooperating with the sliding channel 111 inside the mounting sleeve 100, it can slide back and forth in the axial direction. When the sliding handle 210 is driven forward or backward, the second clamp 220 will form an open or closed state with the first clamp 120, thereby realizing the loading, limiting, and releasing of the fastener. The operating handle 200 has a simple structure, can be directly pressed with a finger, and has good human-machine operation; moreover, its axial sliding method avoids the complexity of the rotating mechanism, allowing the device to maintain excellent operational flexibility even in space-constrained environments. Through the sliding control of the operating handle 200, the entire process of "clamping-transferring-releasing" of the fastener can be realized.

[0073] Specifically, the first chuck 120 is disposed at the front end of the mounting sleeve 100 and serves as part of the clamping structure, forming a limiting structure that envelops the fastener together with the second chuck 220. Its internal contour is adapted to the shapes of the nut 410, flat washer 420, and spring washer 430, ensuring reliable limitation of radial and vertical wobble of the fastener in the closed state, preventing eccentricity or tilting during handling and alignment. The first chuck 120 provides robust geometric constraints, ensuring the fastener always faces the screw in the correct orientation, facilitating high-precision alignment and smooth screw insertion. Through its fixed design, the first chuck 120 provides a stable structural reference, improving the controllability of the installation process.

[0074] Specifically, please see Figure 2 and Figure 3 The second chuck 220 is located at the front end of the operating handle 200, and has a first placement groove 221 for supporting fasteners, with a clearance hole 222 at the bottom of the groove for screw insertion. When both chucks are open, the first placement groove 221 initially accommodates the fastener; when the chucks are closed, the first placement groove 221 and the first chuck 120 together form a second placement groove 223, achieving multi-envelope and limiting of the fastener. The clearance hole 222 allows the screw to pass through the fastener and be tightened while the chuck is still closed, thus avoiding frequent opening and closing of the chucks or adjustment of position in a confined space; it also accommodates screws of different lengths. As a sliding component, the second chuck 220 significantly improves the stability of the fastener during loading and installation.

[0075] Specifically, the first placement slot 221 is disposed on the second clamp 220 for initial bearing and positioning of the fastener. Its slot wall shape is designed according to the geometry of the fastener to prevent it from tilting due to gravity or changes in posture, thereby improving the fastener's posture stability before and during installation. By pre-placing the fastener in the placement slot, the operator can quickly load the fastener outside the product, improving assembly efficiency and reducing the risk of it falling. The first placement slot 221 acts as a fastener tray, laying the alignment foundation for the subsequent locking process.

[0076] Specifically, please see Figure 5The clearance hole 222 is located at the bottom of the first placement groove 221. Its size and position allow the excess portion of the screw after passing through the flat washer 420, the spring washer 430, and the nut 410 to extend into the clearance hole 222, thus avoiding the longer screw. The presence of the clearance hole 222 allows the installation tool to work close to the fastener, eliminating the need for additional operating distance in confined spaces and effectively improving the alignment accuracy between the fastener and the screw. Through the clearance hole 222, the installation tool can lock while maintaining a stable clamping grip with the chuck closed, preventing loosening and detachment, and improving the success rate in blind installation scenarios.

[0077] Specifically, the second placement slot 223 is formed by the first clamp 120 and the second clamp 220 in a closed state, which limits and constrains the fastener in both the radial and vertical directions. This slot structure provides multiple envelopes for the fastener, allowing it to maintain the correct posture during handling, alignment, and screwing, avoiding problems such as eccentricity, tilting, and runout. Through the second placement slot 223, the operator can complete a stable docking operation in a confined space, significantly improving the success rate of initial engagement and overall installation stability.

[0078] Further, please see Figure 2 In this embodiment, considering that both the operating handle 200 and the mounting sleeve 100 need to be directly held and pushed / pulled by the operator during use to adjust the opening and closing state between the first clamp 120 and the second clamp 220, and that the sliding handle 210 itself is small in size and has a relatively smooth outer surface, frequent pressing or pulling can easily cause finger slippage or unstable grip, thus affecting the loading or installation stability of the fastener. Therefore, this embodiment provides a handle 211 at the tail end of the sliding handle 210. The size and shape of the handle 211 facilitate stable gripping by the operator's fingers or palm, significantly improving the reliability of hand force application. In addition, the outer circumferential surface of the handle 211 is provided with a threaded structure 212. The threaded structure 212 serves as an anti-slip texture to enhance friction, allowing the operator to obtain higher contact friction when pressing, pulling, or holding the sliding handle 210, thus reducing the risk of slipping out of the hand. On the other hand, the threaded structure 212 also enables detachable connection with other functional components in Embodiment 2, so as to expand or modify the device according to different assembly scenarios or operational needs.

[0079] Example 2

[0080] Please see Figure 3 , Figure 4 and Figure 5 This invention provides a sliding self-locking fastener installation tool. In embodiment 1, the sliding function of the installation tool mentioned in the invention relies on manual operation of the handle 200 during use.

[0081] The sliding function of the installation tool relies entirely on manual operation by holding the operating handle 200 and pushing and pulling it based on the sliding tube 110 to control the opening and closing between the first chuck 120 and the second chuck 220. However, since the fingers directly grip the sliding handle 210 for operation, the direction of force, strength, and stability all depend on the operator's hand control ability, which can easily lead to problems such as uneven sliding, inaccurate chuck opening and closing, and high operator fatigue, thereby affecting the loading efficiency and installation quality of the fasteners.

[0082] To overcome the above shortcomings, this embodiment provides a more convenient, efficient and stable sliding mechanism to improve the accuracy of the installation process and the overall operating experience.

[0083] Please see Figure 2 and Figure 3 The handle 211 is fitted with a washer 310 and a return spring 320, one end of the return spring 320 abutting against the washer 310;

[0084] The sliding tube 110 is provided with a limiting step 112, and the limiting step 112 restricts the extreme movement position of the gasket 310.

[0085] A pressure head button 330 is also connected to the handle 211 via the thread 212; the other end of the return spring 320 abuts against the bottom of the pressure head button 330, and is compressed or released by the movement of the pressure head button 330 to push the operating handle 200 to slide in the sliding tube 110;

[0086] Please see Figure 3 The pressure head button 330 includes a pressing block 331 and a connecting cylinder 332 integrally formed with the pressing block 331. The connecting cylinder 332 is provided with an internal thread that is adapted to the thread 212 to connect with the handle 211. The top of the pressing block 331 is provided with a slot 333 to facilitate assembly and disassembly with tools.

[0087] Please see Figure 2 and Figure 4 During the assembly process, the operator first puts the gasket 310 and the return spring 320 onto the threaded end of the handle 211 in sequence, and then screws the connecting sleeve 332 of the pressure head button 330 onto the external thread 212 of the handle 211. This causes the connecting sleeve 332 to pre-compress the return spring 320 while it is connected to the handle 211, so that the return spring 320 always maintains the state of providing return force.

[0088] Specifically, please see Figure 3By rotating the pressing block 331 itself or the slot 333 on the top of the pressing block 331, the pressing head button 330 can be more firmly and reliably fixed to the handle 211, thus completing the installation of the sliding control mechanism.

[0089] When in use, the operator no longer needs to hold the sliding handle 210 directly, but can control the operating handle 200 by pressing the pressure head button 330.

[0090] Please see Figure 15 When the pressing block 331 is pressed, the connecting cylinder 332 moves forward, thereby compressing the reset spring 320 again. At the same time, it pushes the operating handle 200 to slide away from the mounting sleeve 100 in the sliding tube 110, increasing the distance between the first chuck 120 and the second chuck 220 and putting them in an open state so that fasteners such as nuts 410, flat washers 420 and spring washers 430 can be placed into the corresponding placement slots.

[0091] When the pressure head button 330 is released, the return spring 320 immediately resets in the pre-compressed state, pushing the pressure head button 330 outward. At the same time, it drives the operating handle 200 to slide in the sliding tube 110 towards the end closer to the mounting sleeve 100, so that the distance between the first chuck 120 and the second chuck 220 is reduced again and closed, thereby reliably limiting the fastener in the chuck structure, completing the clamping and positioning of the fastener and subsequent installation operations.

[0092] In this embodiment, through structural improvements, the position control between the first chuck 120 and the second chuck 220 is achieved entirely through pressing and releasing the pressure head button 330. The operator no longer needs to directly pinch the sliding handle 210 to perform push and pull operations, nor does the operator need to continuously maintain a holding grip on the relative position of the operating handle 200 and the mounting sleeve 100 while moving. This not only significantly reduces the operating load but also significantly improves the opening and closing stability and repeatability of the chucks, reducing human error.

[0093] Furthermore, thanks to the automatic reset design of the 320 return spring, the entire operation process is smoother, and the rhythm of the chuck opening and closing is easier to control, making the fastener loading and installation process in confined spaces more convenient, safe, and efficient.

[0094] In this embodiment, the washer 310 is sleeved on the outside of the handle 211 and located at one end of the return spring 320. Its main function is to serve as the force-bearing contact surface of the return spring 320, ensuring that the return spring 320 maintains a stable axial force state during operation. The washer 310, with its large contact area, evenly transmits the force applied to the handle 211 by the return spring 320 to the limiting step 112 inside the sliding tube 110, preventing the return spring 320 from directly contacting the metal step and causing scratches, wear, or localized plastic deformation, thereby improving the service life and elastic stability of the return spring 320. Furthermore, the washer 310 provides guidance and limiting for the return spring 320, ensuring that the return spring 320 maintains good axial alignment during compression and release, preventing instability such as spring skewing, bending, or jumping, and ensuring smooth and reliable sliding of the operating handle 200 when the button is pressed. By setting the shim 310, the operational stability and durability of the entire pressing and resetting mechanism can be significantly improved, ensuring that the opening and closing action of the chuck remains accurate and controllable. Furthermore, the first chuck 120 includes a main body 121 and a clamping part 123 disposed on one side of the top of the main body 121, and the top of the main body 121 is provided with a handle groove 122.

[0095] Please see Figure 4 , Figure 5 and Figure 6 When in use, the operator inserts his or her fingers or tools into the hand slot 122 and applies a certain external force to move the second chuck 220 in a preset direction, thereby opening the gap between the first chuck 120 and the second chuck 220. At this time, the fastener can be smoothly placed into the second chuck 220.

[0096] After the fastener is placed, the external force applied to the handle groove 122 is removed. The second clamp 220 automatically closes with the elastic restoring force of its own return spring 320, and re-clamps the fastener stably, ensuring that the fastener will not loosen or fall off during subsequent installation operations.

[0097] Please see Figure 2 and Figure 3 The second clamp 220 includes a first limiting block 224 and a second limiting block 225, and the first placement groove 221 is formed between the first limiting block 224 and the second limiting block 225; the height of the first limiting block 224 is higher than that of the second limiting block 225 and is adapted to the height of the clamping part 123 so as to facilitate the setting of the second placement groove 223.

[0098] When placing the fastener, the nut 410 is placed in the first placement groove 221, the flat washer 420 is placed in the second placement groove 223, and the spring washer 430 is placed between the first placement groove 221 and the second placement groove 223.

[0099] Further, please see Figure 4 and Figure 5 The inner surfaces of the first limiting block 224 and the second limiting block 225 are respectively provided with a first set of limiting surfaces 231 and a second set of limiting surfaces 232, which are used to fix the nut 410 to prevent it from rotating during the tightening process of the nut 410 and the screw, so that the nut 410 can remain relatively stationary and ensure that the screw only moves axially when it is rotated and tightened without causing the nut 410 to rotate synchronously. The distance between the first set of limiting surfaces 231 and the second set of limiting surfaces 232 is adapted to the outer contour size of the nut 410, and the surface of the limiting surfaces is treated with anti-slip treatment. By increasing the friction between the limiting surfaces and the nut 410, the fixing effect is further improved, effectively avoiding problems such as reduced installation efficiency or loose threaded connection caused by the rotation of the nut 410, and ensuring the installation quality and stability of the fastener.

[0100] Please see Figure 3 and Figure 6 The portion of the first limiting block 224 that is higher than the second limiting block 225 is provided with a third set of limiting surfaces 233. The clamping part 123 is provided with a fourth set of limiting surfaces 234 at the position corresponding to the third set of limiting surfaces 233. The second placement groove 223 is disposed between the third set of limiting surfaces 233 and the fourth set of limiting surfaces 234 to prevent the flat washer 420 from shaking and causing eccentricity that affects screw insertion during fastener installation, and to form stable lateral support from both sides of the flat washer 420. At the same time, the edges of the limiting surfaces are rounded to avoid jamming during the placement of the flat washer 420, ensuring that the flat washer 420 can be smoothly placed and accurately positioned; the fourth set of limiting surfaces 234 is the flat washer limiting surface.

[0101] Please see Figure 6 The clamping part 123 is provided with a first set of wedge-shaped surfaces 235 and a second set of wedge-shaped surfaces 236 on the two sides adjacent to the fourth set of limiting surfaces 234, respectively;

[0102] The first set of wedge surfaces 235 is used to restrict the flat pad 420 from falling off along the axial direction of the clearance hole 222 and to prevent it from sliding along the inclined surface during movement to open the chuck.

[0103] The second set of wedge surfaces 236 is used for axial positioning of the nut 410 and for opening and closing of the two clamps by means of inclined sliding fit during the movement of the nut 410;

[0104] The portion of the first limiting block 224 that is higher than the second limiting block 225 is provided with a third set of wedge surfaces 237 corresponding to the second set of wedge surfaces 236, which is used to limit the flat pad 420 from falling off along the axial direction of the clearance hole 222 and from sliding along the oblique line during the movement.

[0105] Further, please see Figure 2 and Figure 8 The displacement distance between the pressure head button 330 and the sliding tube 110 is less than the maximum relative sliding distance between the top surface of the second limiting block 225 and the first clamp 120.

[0106] Specifically, please see Figure 8 The displacement distance between the pressure head button 330 and the sliding tube 110 is set as the stroke. The maximum relative sliding distance between the top surface of the second limiting block 225 and the first chuck 120 is set as the stroke. The itinerary The setting should be smaller than The maximum value is set in this way to prevent the second chuck 220 from disengaging from the sliding engagement with the first chuck 120 during axial movement, thereby avoiding the second chuck 220 from rotating along the axis of the sliding tube 110.

[0107] Further, please see Figure 4 , Figure 5 and Figure 6 The bottom of the clamping part 123 is provided with a first sliding surface 124, and the top of the second limiting block 225 is provided with a second sliding surface 226. The first sliding surface 124 and the second sliding surface 226 are in contact and can slide relative to each other.

[0108] The first sliding surface 124 and the second sliding surface 226 are used to ensure that the clamping part 123 slides stably on the second limiting block 225, avoiding the impact of rotation or offset during the sliding process on the clamping accuracy of the chuck on the workpiece. Furthermore, the close contact and relative sliding cooperation between the first sliding surface 124 and the second sliding surface 226 enable smoother movement of the clamping part 123, while effectively constraining the rotational freedom of the second chuck 220. This ensures the structural stability and operational reliability of the entire clamping mechanism during operation, allowing the chuck to accurately complete the clamping action on the workpiece according to the preset trajectory.

[0109] Further, please see Figure 2The sliding tube 110 includes an integrally formed first diameter tube portion 113 and second diameter tube portion 114, the diameter of the first diameter tube portion 113 being larger than the diameter of the second diameter tube portion 114; a transition slope 115 is provided at the connection between the first diameter tube portion 113 and the second diameter tube portion 114; the transition slope 115 and the thickening of the first diameter tube portion 113 facilitate gripping and prevent slippage during operation.

[0110] Please see Figure 2 The first diameter tube section 113 and the second diameter tube section 114 are provided with sliding channels 111 of the same diameter and connected to each other.

[0111] Further, please see Figure 8 and Figure 9 Because the return spring 320 is installed between the pad 310 and the pressure head button 330 and is in a compressed state, under the influence of the reaction force of the return spring 320, the gap between the end face of the pressure head button 330 and the end face of the sliding tube 110 is at its maximum (i.e., the stroke Y is at its maximum), and the position stroke X* between the two clamps is at its minimum (less than the outer diameter of the flat pad 420, i.e., the two clamps are in a closed state).

[0112] When the pressure head button 330 is pressed, and the stroke Y approaches 0, the position stroke X* between the two clamps is at its maximum value (greater than the outer diameter of the flat washer 420, i.e., the two clamps are in the open state). In this state, the nut 410, spring washer 430, and flat washer 420 are placed in respectively, and then the button is released. Under the action of the return spring 320, the two clamps return to the closed state, and the fastener is limited in the two clamps. It is clamped and will not fall off, and can be directly used for product installation.

[0113] Further, please see Figure 11 When using it, place the installation tool at the rear end of the connector flange. When rotating the connector fastener (screw), simply turn the screw from the outside of the connector flange to install the fastener. When removing the fastener, simply rotate it in the opposite direction.

[0114] Specifically, during installation, due to the limiting feature of the first chuck 120, the nut 410 can only move axially along the sliding tube 110 via threaded transmission. When the nut 410 contacts the first wedge surface in axial movement, the first chuck 120 receives the component force of the nut 410 along the self-locking mechanism, and the axial movement of the nut 410 is converted into the radial movement of the sliding tube 110.

[0115] Please see Figure 15 At this point, the two jaws gradually open, and the distance between the first jaw 120 and the second jaw 220 increases. As the lock gradually increases in size, when the continuously tightened nut 410 reaches the locked state, the nut 410 disengages from the limiting surface. At its maximum state; at this time, the diameter of the second placement slot 223 is... With a flat washer diameter of 420, the connector fasteners are in the unlocked state, allowing the installation tool to easily detach from the fasteners and complete the installation; to remove the fasteners, simply reverse the process.

[0116] In this embodiment, the chuck is designed to be very compact, with its width being approximately the same as that of the nut 410. This design makes it highly practical; basically, as long as the nut 410 can be installed, this tool can be used smoothly.

[0117] Specifically, please see Figure 10 Furthermore, in the depth direction, the size of the product in this embodiment is less than one-fifth that of a traditional tool. This feature greatly reduces the space that needs to be reserved inside the product for tool operation, almost to the point that no special operating space needs to be reserved.

[0118] Please see Figure 14 In the traditional product assembly process, fasteners need to be installed step by step using tweezers inside the product. This operation method is not only cumbersome but also inefficient.

[0119] Now, this method has been optimized and integrated into a simple step that can be done manually outside the product. This improvement significantly increases assembly efficiency while effectively preventing the generation of unnecessary materials during the assembly process.

[0120] Specifically, the chuck itself has clamping and limiting functions. After the flat washer 420, spring washer 430, and nut 410 are inserted, the installation operation can be carried out directly without changing tools, thus eliminating the need for alignment. After installation, simply remove the chuck. Furthermore, the chuck's clamping and anti-loosening function plays a crucial role in the installation process, effectively preventing fasteners from falling off due to accidental contact.

[0121] Furthermore, because the second chuck 220 has screw clearance holes 222, it can accommodate screws of any length for installation. This feature broadens the chuck's applicability. Moreover, the chuck allows for "blind installation" inside the product, further improving ease of operation. Disassembling fasteners is as simple as reversing the installation process, resulting in highly efficient disassembly.

[0122] Example 3

[0123] Please see Figures 1-6This invention provides an installation method for a sliding self-locking fastener installation tool, as described in Embodiments 1 and 2, comprising:

[0124] The sliding handle 210 is inserted through one end of the second diameter tube portion 114 of the sliding tube 110, so that the first sliding surface 124 of the first chuck 120 and the second sliding surface 226 of the second chuck 220 are engaged, thereby allowing the sliding handle 210 to slide along the axial direction of the sliding tube 110 and restricting its rotation.

[0125] Install a washer 310 and a return spring 320 in sequence at the limiting step 112 of the sliding tube 110, and screw the pressure head button 330 to the thread 212 on the handle 211 so that the compression spring is in a pre-compressed state, so that the end face of the pressure head button 330 and the end face of the sliding tube 110 form the maximum gap and the first chuck 120 and the second chuck 220 are in a closed state.

[0126] Press the pressure head button 330 to drive the sliding handle 210 to move along the axial direction of the sliding tube 110, thereby increasing the distance between the second chuck 220 and the first chuck 120, so that the first chuck 120 and the second chuck 220 are in the open state.

[0127] With the first chuck 120 and the second chuck 220 open, the fastener is placed into the second chuck 220 in sequence, and then the pressure head button 330 is released, so that the return spring 320 is reset and drives the first chuck 120 and the second chuck 220 to close, so that the fastener is clamped and held in the preset position.

[0128] Specifically, the sliding handle 210 of the operating handle 200 is first inserted into the sliding tube 110 through the second diameter tube portion 114 at the rear end of the sliding tube 110. Then, the second chuck 220 on the outside of the sliding handle 210 gradually enters the front end of the sliding tube 110, and the second sliding surface 226 on the second chuck 220 is brought into contact with the first sliding surface 124 on the first chuck 120. This structural cooperation allows the sliding handle 210 to slide smoothly along the axial direction inside the sliding tube 110. Simultaneously, the meshing action between the sliding surfaces restricts the rotation of the sliding handle 210, thereby ensuring the positional stability and directional consistency of the chuck during the opening and closing process.

[0129] Subsequently, a washer 310 and a return spring 320 are sequentially installed inside the sliding tube 110 near the front end of the limiting step 112, with the washer 310 abutting against the surface of the limiting step 112. After the return spring 320 is installed, the connecting sleeve 332 of the pressure head button 330 is screwed onto the thread 212 on the outside of the handle 211, so that the pressure head button 330 pre-compresses the return spring 320 during the tightening process. Through this pre-compression, the return spring 320 can maintain a continuous and stable return force, so that a preset maximum gap is formed between the end face of the pressure head button 330 and the end face of the sliding tube 110. At this time, the sliding handle 210 is in a position close to the front end of the sliding tube 110 under the action of the spring, keeping the first clamp 120 and the second clamp 220 in a closed state to ensure that the fastener will not fall off accidentally before operation.

[0130] When loading fasteners, the operator presses the pressure head button 330, causing it to move towards the sliding tube 110 and further compress the return spring 320. As the pressure head button 330 moves inward, the sliding handle 210 is driven to slide away from the mounting sleeve 100 along the axial direction of the sliding tube 110, thereby gradually increasing the distance between the first chuck 120 and the second chuck 220 until the chuck opening is fully open. At this time, the second chuck 220 can fully expose the placement groove for supporting fasteners, and the operator can then place fasteners such as nuts 410, flat washers 420, and spring washers 430 into the grooves of the second chuck 220 in sequence to complete the pre-installation.

[0131] After the fastener is loaded, the operator releases the pressure head button 330. The return spring 320 quickly resets upon release, pushing the pressure head button 330 back to its original position. Simultaneously, it moves the sliding handle 210 towards the front end of the sliding tube 110, causing the first chuck 120 and the second chuck 220 to close again. During the chuck closure process, the limiting structure formed between the two chucks reliably envelops the fastener, preventing it from shaking, shifting, or falling off, thus firmly holding the fastener in the preset position. This facilitates subsequent movement of the tool to the installation position and the performance of the tightening operation.

[0132] Through the above steps, the installation method provided in this embodiment can achieve fast loading, stable limiting and precise positioning of fasteners. The operation is simple and efficient. Compared with the method of directly pushing and pulling the sliding handle 210 manually, the user experience is better and the stability is higher.

[0133] Furthermore, a method for installing a sliding self-locking fastener installation tool also includes:

[0134] Move the installation tool holding the fastener to the target installation position, insert the screw into the fastener, and initially tighten the screw to make the screw and fastener initially engage;

[0135] After the screw and fastener are in the initial engagement state, continue to tighten the screw so that the fastener contacts the second set of wedge surfaces provided in the first collet 120 in sequence under the axial pushing force of the screw, and under the guiding action of the second set of wedge surfaces, the distance between the first collet 120 and the second collet 220 begins to increase.

[0136] As the screw is tightened further, the fastener continues to move along the screw axis and abuts against the fourth set of limiting surfaces 234 provided in the second chuck 220 in sequence, thereby further increasing the distance between the first chuck 120 and the second chuck 220.

[0137] When the screw enters the final tightening stage, the outer periphery of the fastener abuts against the first set of wedge surfaces 235 provided in the second collet 220, and the expansion guiding effect of the first set of wedge surfaces 235 is used to make the first collet 120 and the second collet 220 enter the fully open state.

[0138] The screw is finally tightened with the first chuck 120 and the second chuck 220 fully open. After the fastener is completely removed from the limiting area of ​​the first chuck 120, the installation tool is removed from the installation position to complete the installation of the fastener.

[0139] Specifically, the operator moves the installation tool holding the fastener to the target installation position, positioning the fastener in the installation standby position. At this point, the threaded end of the screw is aligned with the clearance hole 222 in the fastener and the corresponding hole in each component, allowing the screw to gradually penetrate the fastener held between the first chuck 120 and the second chuck 220. The operator uses a screwdriver or power tool to initially tighten the screw, ensuring a reliable initial engagement between the screw's thread and the fastener's internal thread, thus guaranteeing the fastener can be stably guided into the corresponding installation position.

[0140] After the screw and fastener have initially engaged, the operator continues to tighten the screw, causing the fastener to gradually move in the installation direction under the axial pushing force of the screw. As the screw continues to be screwed in, the outer peripheral surface of the fastener contacts the second set of wedge surfaces 236 inside the first collet 120 in sequence, and under the drive of the screw's axial force, a component force is generated outward along the wedge surfaces, causing the distance between the first collet 120 and the second collet 220 to begin to increase.

[0141] After being pushed open in the first stage, the fastener continues to move forward with the screw, and its outer periphery then contacts and abuts against the fourth set of limiting surfaces 234. The fourth set of limiting surfaces 234 has a larger opening angle than the second set of wedge-shaped surfaces 236. Under the continuous tightening force of the screw, the fastener continues to generate an outward expanding force along this limiting surface, causing further opening between the clamps. Through this structural design, the fastener can gradually break through the envelope constraint of the clamps in this stage without requiring the operator to press the pressure head button.

[0142] As the screw continues to tighten and moves the fastener deeper, the outer periphery of the fastener eventually comes into contact with the first set of wedge surfaces 235. The first set of wedge surfaces 235 has a larger angle, and its function is to provide final forced expansion guidance, so that at the moment the screw is finally tightened, the fastener actively opens the gap between the first collet 120 and the second collet 220 through the axial tightening force of the screw, allowing the collets to enter a fully open state. In this state, the fastener has completely broken away from the limiting area of ​​the first collet 120, and its circumference is no longer restricted by the envelope of the collet structure.

[0143] Because the fastener automatically releases during the final tightening stage thanks to the step-by-step guiding and expanding action of the wedge face assembly, the installation tool can automatically disengage the fastener without manually pressing the pressure head button 330 throughout the entire tightening process. Once it is confirmed that the fastener has completely exited the limiting range of the first chuck 120, the operator only needs to gently move the installation tool along the installation position direction to complete the fastener installation.

[0144] Through the coordinated design of multiple sets of wedge surfaces and limiting surfaces, this embodiment enables the fastener to automatically open and disengage the chuck under the natural drive of the screw tightening force. This not only avoids the tedium of manual operation, but also significantly improves the efficiency and automation of the fastener installation process.

[0145] Specifically, the general process of fastener disengaging from its installation position is as follows: After the fastener is inserted into the chuck and aligned with the object to be fastened, the screw is inserted and initially engaged. As the screw head continues to rotate, the thread on the screw acts as a lead screw drive, causing the nut 410 to move along the screw axis. When the edge of the nut 410 contacts the second set of wedge surfaces 236, the chuck on the clamping part 123 will gradually be pushed open. At this time, the nut 410 is still in a limited state (it cannot rotate and can only move along the screw axis and screw head direction). As it gradually tightens, the nut 410 will press the spring washer 430 and the flat washer 420 and make them move synchronously along the screw axis. When the edge of the flat washer 420 contacts the first set of wedge surfaces 235, the chuck is pushed open by a component force. As it continues to tighten, the flat washer will cooperate with the nut 410 to push the chuck to the maximum opening state to guide the locking, thus automatically separating the tool from the fastener.

[0146] In this state, there is no structural interference between the chuck of the installation tool and the fastener, and the fastener can smoothly disengage from the area defined by the first chuck 120. Once it is confirmed that the fastener has completely exited the chuck's limiting range, the operator removes the installation tool from the installation tool around the screw and fastener, thus completing all steps of the fastener installation task.

[0147] Through the above-described further installation process, this embodiment can quickly and stably complete the continuous operation process from fastener clamping, guided installation, initial engagement to final locking and tool disengagement under specific working conditions, effectively improving installation efficiency and avoiding jamming and damage caused by chuck interference.

[0148] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A sliding self-locking fastener installation tool, characterized in that, include: Mounting sleeve (100), and operating handle (200) disposed within the mounting sleeve (100) and capable of sliding displacement based on the mounting sleeve (100); The mounting sleeve (100) includes a sliding tube (110) and a first clamp (120) disposed at one end of the sliding tube (110); the sliding tube (110) is provided with a sliding channel (111) that is through and used for the sliding displacement of the operating handle (200). The operating handle (200) includes a sliding handle (210) and a second clamp (220) disposed at one end of the sliding handle (210); the second clamp (220) is provided with a first placement groove (221) for placing the fastener, and the first placement groove (221) is provided with a clearance hole (222). When the first clamp (120) and the second clamp (220) come close together, a second placement groove (223) is formed for placing the fastener. The first chuck (120) includes a main body (121) and a clamping part (123) disposed on one side of the top of the main body (121). The second chuck (220) includes a first limiting block (224) and a second limiting block (225), and the first placement groove (221) is formed between the first limiting block (224) and the second limiting block (225); The height of the first limiting block (224) is higher than that of the second limiting block (225), and is adapted to the height of the clamping part (123); The bottom of the clamping part (123) is provided with a first sliding surface (124), and the top of the second limiting block (225) is provided with a second sliding surface (226). The first sliding surface (124) and the second sliding surface (226) are in contact and can slide relative to each other.

2. The sliding self-locking fastener installation tool according to claim 1, characterized in that, One end of the sliding handle (210) is also provided with a handle (211), and the handle (211) is provided with a thread (212).

3. The sliding self-locking fastener installation tool according to claim 2, characterized in that, A washer (310) and a return spring (320) are fitted on the handle (211), and one end of the return spring (320) abuts against the washer (310); The sliding tube (110) is provided with a limiting step (112), and the limiting step (112) restricts the extreme movement position of the gasket (310); A pressure head button (330) is also connected to the handle (211) via the thread (212); the other end of the return spring (320) abuts against the bottom of the pressure head button (330), and is compressed or released by the movement of the pressure head button (330) to push the operating handle (200) to slide in the sliding tube (110); The pressure head button (330) includes a pressing block (331) and a connecting cylinder (332) integrally formed with the pressing block (331). The connecting cylinder (332) has an internal thread that is adapted to the thread (212) for connection with the handle (211). The top of the pressing block (331) has a slot (333).

4. The sliding self-locking fastener installation tool according to claim 1, characterized in that, The top of the main body (121) is provided with a handle groove (122).

5. The sliding self-locking fastener installation tool according to claim 4, characterized in that, The inner sides of the first limiting block (224) and the second limiting block (225) are respectively provided with a first set of limiting surfaces (231) and a second set of limiting surfaces (232); The portion of the first limiting block (224) that is higher than the second limiting block (225) is provided with a third set of limiting surfaces (233), and the clamping part (123) is provided with a fourth set of limiting surfaces (234) at the position corresponding to the third set of limiting surfaces (233). The second placement groove (223) is disposed between the third set of limiting surfaces (233) and the fourth set of limiting surfaces (234). The clamping part (123) is provided with a first set of wedge surfaces (235) and a second set of wedge surfaces (236) on the two sides adjacent to the fourth set of limiting surfaces (234), and the part of the first limiting block (224) that is higher than the second limiting block (225) is provided with a third set of wedge surfaces (237) corresponding to the second set of wedge surfaces (236).

6. The sliding self-locking fastener installation tool according to claim 3, characterized in that, The displacement distance between the pressure head button (330) and the sliding tube (110) is less than the maximum relative sliding distance between the top surface of the second limiting block (225) and the first clamp (120).

7. The sliding self-locking fastener installation tool according to claim 1, characterized in that, The sliding tube (110) includes an integrally formed first diameter tube section (113) and second diameter tube section (114), wherein the diameter of the first diameter tube section (113) is larger than the diameter of the second diameter tube section (114); A transition slope (115) is provided at the connection between the first diameter tube section (113) and the second diameter tube section (114). The first diameter tube section (113) and the second diameter tube section (114) are provided with sliding channels (111) of the same diameter and connected to each other.

8. A method for installing a sliding self-locking fastener installation tool, applied to the sliding self-locking fastener installation tool according to any one of claims 1-7; characterized in that, include: The sliding handle (210) is inserted through one end of the second diameter tube (114) of the sliding tube (110), so that the first sliding surface (124) of the first chuck (120) and the second sliding surface (226) of the second chuck (220) are engaged, thereby allowing the sliding handle (210) to slide along the axial direction of the sliding tube (110) and restricting its rotation. Install a washer (310) and a return spring (320) in sequence at the limiting step (112) of the sliding tube (110), and screw the pressure head button (330) onto the thread (212) on the handle (211) so that the return spring (320) is in a pre-compressed state, so that the end face of the pressure head button (330) and the end face of the sliding tube (110) form the maximum gap and the first chuck (120) and the second chuck (220) are in a closed state; Press the pressure head button (330) to drive the sliding handle (210) to move along the axial direction of the sliding tube (110), thereby increasing the distance between the second chuck (220) and the first chuck (120), and thus putting the first chuck (120) and the second chuck (220) in the open state; With the first chuck (120) and the second chuck (220) open, the fastener is placed into the second chuck (220) in sequence, and then the pressure head button (330) is released, so that the return spring (320) is reset and drives the first chuck (120) and the second chuck (220) to close, so that the fastener is clamped and held in the preset position.

9. The installation method of the sliding self-locking fastener installation tool according to claim 8, characterized in that, Also includes: Move the installation tool holding the fastener to the target installation position, insert the screw into the fastener, and initially tighten the screw to make the screw and fastener initially engage; After the screw and fastener are in the initial engagement state, continue to tighten the screw so that the fastener contacts the second set of wedge surfaces (236) provided in the first collet (120) in sequence under the axial pushing force of the screw, and under the guiding action of the second set of wedge surfaces (236), the distance between the first collet (120) and the second collet (220) begins to increase. As the screw is tightened further, the fastener continues to move along the screw axis and abuts against the fourth set of limiting surfaces (234) provided in the second collet (220) in sequence, thereby further increasing the distance between the first collet (120) and the second collet (220). When the screw enters the final tightening stage, the outer periphery of the fastener abuts against the first set of wedge surfaces (235) provided in the second collet (220), and the expansion guiding effect of the first set of wedge surfaces (235) is used to make the first collet (120) and the second collet (220) enter the fully open state; The screw is finally tightened when the first chuck (120) and the second chuck (220) are fully open, and the installation tool is removed from the installation position after the fastener is completely removed from the limiting area of ​​the first chuck (120) to complete the installation of the fastener.

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