Binding machine

Abstract

A binding machine comprises a base and a machine frame, the machine frame is provided with a pressing rivet assembly, a punching assembly and a pipe cutting assembly, the pressing rivet assembly and the punching assembly are arranged on one side of the machine frame side by side in a sliding fit mode, and the pipe cutting assembly is arranged on the other side of the machine frame in a sliding fit mode. The rivet pressing assembly comprises a first handle and a first moving block. The punching assembly comprises a second handle and a second moving block; the pipe cutting assembly comprises a sliding block vertically matched in the rack in a sliding mode and a cutter piece matched with the sliding block in an inclined sliding mode, and the second moving block can abut against the sliding block in the up-down sliding process so as to drive the sliding block to slide up and down along with the second moving block. When the sliding block slides downwards, the cutter piece is driven to move in the horizontal direction to cut the riveting pipe, and when the sliding block slides upwards, the cutter piece is driven to move reversely in the horizontal direction to reset. The punching device has the advantages that the punching assembly and the pipe cutting assembly can be linked with each other, so that the working efficiency of the whole machine is improved, the pipe cutting assembly is simple in structure and stable in operation process, and it is guaranteed that the pipe cutting process and the resetting process can be accurately operated.

Description

Technical Field

[0001] This application relates to the technical field of binding machines, and more specifically, to a binding machine that achieves binding by pressing a handle. Background Technology

[0002] A manual binding machine is a device that organizes and binds scattered and disorganized documents. It is generally used for binding financial receipts and archival documents.

[0003] The existing manual binding machine mainly includes a base, a frame mounted on the base, a tube cutting assembly (for cutting rivet tubes), a riveting assembly, and a punching assembly. To improve efficiency, existing technologies link the punching and tube cutting actions, thereby cutting the rivet tube during the punching process. For example, patent document CN202420271951.1 discloses a structure that links punching and tube cutting, specifically by setting a protruding linkage block on the side wall of the punching assembly. The up-and-down movement of this linkage block is coordinated with the movable blade in the cutting structure. The linkage roller in the base rolls and pushes against the cutter to move and cut the pipe. After the two disengage, the cutter is reset by the reset force of the return spring. Although it achieves linkage between drilling and pipe cutting, the cutter structure includes multiple components such as the cutter base, movable cutter holder, linkage roller, return spring, and blade unit, resulting in a complex structure. Moreover, the reset process relies on the restoring force of the return spring to reset the cutter. The return spring may cause inaccurate reset during repeated stretching and deformation.

[0004] In addition, the riveting assembly includes a rivet positioning pin, also known as a guide pin. Existing technology uses an elastic plate to elastically clamp the positioning pin to prevent it from accidentally falling off. However, the elastic plate needs to be installed separately on the sliding plate, which increases the assembly steps and complexity of the binding machine. Summary of the Invention

[0005] In view of the above-mentioned shortcomings of the prior art, this application provides a binding machine in which the punching component and the tube cutting component can be linked together to improve the overall working efficiency of the machine. Furthermore, the tube cutting component has a simple structure, runs smoothly, and ensures that the tube cutting and resetting processes are accurate.

[0006] To solve the above-mentioned technical problems, the technical solution adopted in this application is as follows: a binding machine, the binding machine structure including a base, an integrated frame disposed on the base, a riveting assembly, a punching assembly, and a tube cutting assembly disposed on the frame, wherein the riveting assembly and the punching assembly are slidably coupled side by side on one side of the frame, and each can slide up and down relative to the frame, and the tube cutting assembly is slidably coupled on the other side of the frame; the riveting assembly includes a first handle and a first moving block, the first handle being used to drive the first moving block to slide up and down along the frame for riveting and resetting; the punching assembly... The assembly includes a second handle and a second movable block. The second handle drives the second movable block to slide up and down within the frame for drilling and resetting. The pipe cutting assembly includes a slider that slides vertically within the frame and a cutting blade that slides obliquely with the slider. When the second movable block slides up and down, it abuts against the slider to drive the slider to slide up and down. When the slider slides down, the cutting blade is driven by the slider to move horizontally to cut the rivet. When the slider slides up, the cutting blade is driven by the slider to move horizontally in the opposite direction to reset.

[0007] With the above structure, the drilling component and the riveting component of this application are slidably fitted on an integrated frame, eliminating the need for two separate component structures and effectively saving space. Furthermore, both the riveting and drilling components are driven by a handle to move their moving blocks up and down, making operation convenient and allowing for independent operation without interference. Additionally, a pipe-cutting component is also integrated into the frame, connected to it without requiring a separate pipe-cutting structure, resulting in greater stability during pipe cutting. Moreover, the drilling and pipe-cutting components can be connected via a second moving block and a slider, enabling simultaneous pipe cutting during drilling and significantly improving overall machine efficiency. Furthermore, the pipe-cutting component maintains horizontal movement during pipe cutting, ensuring a smooth cutting surface for subsequent riveting.

[0008] Furthermore, the frame is provided with a vertically extending groove, and the slider is slidably engaged within the groove. An inclined top block is provided on the slider. The cutter is provided with an inclined through hole, and the inclined top block is slidably fitted within the inclined through hole. The slider is used to slide up and down along the groove so that the inclined top block drives the cutter to move horizontally to cut the rivet or move away from it. Using the above structure, this application abandons the traditional complex drive mechanism for cutting rivets. Instead, by setting a simple slider structure, the trajectory of the slider sliding up and down along the groove can be transformed into the trajectory of the cutter sliding horizontally left and right. This sliding engagement of the inclined top block and the inclined through hole is simple in structure, occupies little space, and is more stable during operation. Therefore, it can achieve precise cutting of the rivet with a smooth cut surface.

[0009] Furthermore, one end of the cutter is a driving end, and the other end is a cutting end, with the oblique through hole located at the driving end; the inclined push block slopes from top to bottom from the cutting end toward the driving end, with the side of the inclined push block facing the cutting end being the first inclined surface and the side facing the driving end being the second inclined surface; with the above structure, when the slider slides downward along the groove under the drive of an external force, the first inclined surface pushes the cutting end of the cutter toward the location of the rivet, thereby cutting the rivet through the horizontal movement of the cutter; when the slider slides upward along the groove under the drive of an external force, the second inclined surface pushes the cutter toward the direction of the driving end, thereby moving the cutter away from the rivet and resetting it; this structure does not require a complex cutter driving device, but only uses the up and down sliding of the slider to drive the horizontal movement of the cutter to achieve cutting and moving away from the rivet, saving space and making the overall device more compact.

[0010] Furthermore, the oblique through hole has a notch on one side along the width direction of the cutter, and the oblique top block slides into the oblique through hole from the notch. With this structure, when assembling the slider and the cutter, it is only necessary to align the notch of the oblique through hole of the cutter with the oblique top block from the notch position on the side wall and push it in. There is no need for up and down insertion and fitting, making the assembly more convenient and less restricted by the space occupied by the slide groove.

[0011] Furthermore, when the second moving block disengages from the slider, the slider remains stationary relative to the cutter through the contact action between the inclined top block and the inclined through hole. Using this structure, the cooperation of the inclined through hole and the inclined top block transforms the up-and-down sliding of the slider into the left-and-right sliding of the cutter, thus achieving the cutting action on the rivet. Due to this inclined cooperation, when the second moving block is not in contact with the slider, the slider will not slide up-and-down relative to the cutter under the resistance generated by the inclined cooperation. This prevents the slider from sliding down due to its own weight without the support of the second moving block. If the slider slides down under its own weight, the cutting force generated by its own weight is small, making it difficult to cut the rivet. It also results in an excessive distance between the slider and the second moving block, preventing the second moving block from pushing the slider downwards within its effective stroke to effectively cut the rivet.

[0012] Furthermore, the frame is also equipped with a paper-pressing plate linkage piece that is linked to the punching assembly. The middle position of the paper-pressing plate linkage piece is rotatably connected to the frame. One end of the paper-pressing plate linkage piece is rotatably engaged with the paper-pressing plate of the punching assembly, and the other end can abut against the rivet tube. With this structure, when the handle of the binding machine moves the punching assembly up and down, it can drive the paper-pressing plate linkage piece to rotate relative to the frame. During the rotation, if the end connected to the paper-pressing plate moves downward, the other end moves upward, and at this time it can abut against the rivet tube. At this time, the cutter is exactly in the position to cut the rivet tube. With the support of the rivet tube channel and the paper-pressing plate linkage piece, the rivet tube is more stable, so the cutting is more accurate.

[0013] Furthermore, the paper pressing table linkage plate has an abutment plate at one end for abutting the rivet tube, and the frame is provided with an arc-shaped track. The inner side wall of the abutment plate is used for sliding engagement with the arc-shaped track. With this structure, when the paper pressing table linkage plate rotates relative to the frame, the end that is engaged with the paper pressing table descends, while the other end for abutting the rivet tube rises. The rising process achieves stable rotation and guidance through the sliding engagement between the abutment plate and the arc-shaped track, thereby allowing the rivet tube to be smoothly abutted in the appropriate position for easy and stable cutting.

[0014] Furthermore, the upper and lower ends of the slider are respectively provided with a first abutting block and a second abutting block extending towards the second moving block; the first abutting block and the second abutting block can abut against the second moving block; when the first abutting block abuts against the second moving block, the second moving block drives the slider upward to drive the cutting end of the cutter to move horizontally away from the rivet tube; when the second abutting block abuts against the second moving block, the second moving block drives the slider downward to drive the cutter to move horizontally to cut the rivet tube; with the above structure, the slider of this application achieves a state of abutting against the upper and lower ends of the second moving block respectively through the setting of the upper and lower abutting blocks, thereby realizing the process of the second moving block being driven by the handle to move up and down, which can generate linkage with the slider. During the drilling process, the slider follows downward to make the cutting end of the cutter cut the rivet tube, and during the non-drilling and reset process, the slider can be driven upward to make the cutting end of the cutter disengage from the rivet tube.

[0015] Furthermore, the positions where the second moving block abuts against the first and second abutting blocks are respectively the first abutting position and the second abutting position. The first abutting position is platform-shaped, and the second abutting position is a stepped groove recessed towards the upper end of the moving block. By adopting this structure, setting the first abutting position at the upper end of the moving block as a platform and the second abutting position as a stepped groove, the stroke of the moving block to precisely drive the slider to cut the rivet tube can be effectively controlled, avoiding the situation where the rivet tube is not completely cut due to insufficient stroke.

[0016] Furthermore, the distance between the first abutment position and the second abutment position in the upper and lower directions is less than the distance between the first abutment block and the second abutment block in the upper and lower directions. With this structure, during the descent of the moving block, there is a portion of its travel that will not contact the slider. After descending to the appropriate drilling position, the second abutment block, which then abuts the slider, drives the cutting end of the cutter to cut the rivet tube, thus completing the cutting of the rivet tube while drilling. Moreover, this setting can effectively control the stroke of the drilling component, enabling the drilling component to perform effective drilling.

[0017] Furthermore, both the first and second handles are equipped with drive gears, and the corresponding first and second moving blocks are each equipped with a first rack that meshes with the drive gears. The frame is equipped with a second rack. The first and second racks are arranged parallel to each other and both mesh with the drive gears. With this structure, when the handle is pressed down, the handle drives the drive gear to rotate, which, through meshing with the rack, is converted into a downward linear motion of the moving block, thereby realizing the drilling action. When the handle is rotated in the opposite direction to reset, it is converted into an upward linear motion of the moving block through meshing with the rack, thereby realizing the reset of the drilling component. In addition, the meshing method of the double racks makes it easier to press down the handle, and the drilling pressure is also sufficient.

[0018] Furthermore, a cover is also fitted onto the frame, which encloses the first and second moving blocks. A first reset elastic element connects the cover and the first moving block, allowing the first moving block to slide upwards and reset. A second reset elastic element connects the cover and the second moving block, allowing the second moving block to slide upwards and reset. This structure encloses the moving blocks between the cover and the frame, preventing external interference during operation. Additionally, the first and second reset elastic elements allow the riveting and drilling components to automatically reset upon completion of the riveting and drilling actions, eliminating the need for manual reset. This improves operational convenience and efficiency, and the springs have a relatively long service life, ensuring the stability and reliability of the reset function under normal operating conditions.

[0019] Furthermore, the second movable block is further connected to a paper pressing platform and a guide shaft that can slide up and down relative to the second movable block. The paper pressing platform is installed at the bottom of the guide shaft and is movably connected to the second movable block through the guide shaft. A third reset elastic element is fitted on the guide shaft, with one end of the third reset elastic element abutting against the paper pressing platform and the other end abutting against the second movable block. With this structure, the third reset elastic element provides a stable elastic buffer between the paper pressing platform and the second movable block. During the contact and separation process between the paper pressing platform and the paper, the elastic deformation of the third reset elastic element can absorb and release energy, thereby reducing the impact force. After the punching operation is completed, the second reset elastic element releases its elastic potential energy, pushing the second movable block to reset. At the same time, the third reset elastic element also releases its elastic potential energy, pushing the paper pressing platform to smoothly return to its initial position, avoiding paper damage caused by hard contact.

[0020] Furthermore, the riveting assembly includes a guide pin, and the cover is provided with a first through hole for the guide pin to slide through. The cover is also provided with an elastic positioning structure adapted to the guide pin. The guide pin passes through the first through hole into the riveting assembly, and the elastic positioning structure is used to elastically clamp the guide pin. With this structure, when the guide pin is in a stationary state and placed in the through hole, the elastic positioning structure has a certain pressing effect on the guide pin, so that the guide pin has a certain damping feel and will not fall off at will.

[0021] Furthermore, the elastic positioning structure and the cover are integrally molded. This structure eliminates the need for additional installation steps, reducing assembly complexity and production costs. It also reduces the risk of malfunctions caused by loose or detached parts. Since the elastic positioning structure is directly integrated into the cover, it does not add any additional installation requirements, maintaining the compact design of the binding machine. Attached Figure Description

[0022] Figure 1 This application presents a structural schematic diagram of the binding machine in its first view.

[0023] Figure 2 This application presents a structural schematic diagram of the binding machine in its second view.

[0024] Figure 3 This application presents a structural schematic diagram of the binding machine in its third view.

[0025] Figure 4 This application presents a structural schematic diagram of the binding machine's side view (in the punched state).

[0026] Figure 5 This application presents a structural diagram of the binding machine after removing the slider and cutter components.

[0027] Figure 6 This application presents a structural diagram of the slider and cutter assembly.

[0028] Figure 7 This application presents a schematic diagram of the cutting component.

[0029] Figure 8 This application presents a schematic diagram of the slider's structure.

[0030] Figure 9 This application presents a structural schematic diagram of the combination of the punching assembly and the pipe cutting assembly in a first view.

[0031] Figure 10 This application presents a structural schematic diagram of the combination of the punching assembly and the pipe cutting assembly in a second view.

[0032] Figure 11 This application presents a structural schematic diagram of the drilling assembly and the tube cutting assembly assembly.

[0033] Figure 12 This application presents a schematic diagram of the combined structure of the frame and the slider.

[0034] Figure 13 This application presents a structural schematic diagram of the cross-sectional view of the binding machine.

[0035] Figure 14 This application presents a structural schematic diagram of a binding machine visible from the cover.

[0036] Figure 15 This application presents a structural schematic diagram of the first exploded view of the binding machine.

[0037] Figure 16 This application presents a structural schematic diagram of the binding machine in the exploded view, second view.

[0038] Figure 17 The first view of the enlarged view of the flexible positioning structure in this application is a structural schematic diagram.

[0039] Figure 18 This application presents a structural schematic diagram of the flexible positioning structure, as shown in the enlarged second view.

[0040] As shown in the attached diagram: 1. Base, 2. Frame, 21. Slide groove, 211. Limiting step surface, 22. Rivet tube channel, 23. Arc-shaped track, 24. Cutting knife channel, 25. Second rack, 3. Riveting assembly, 31. First handle, 32. First moving block, 4. Drilling assembly, 41. Second handle, 42. Second moving block, 421. First abutment position, 422. Second abutment position, 341. First rack, 43. Guide shaft, 5. Cutting assembly, 51. Slider, 511. First abutment block, 512. Second abutment block, 52. Cutting knife, 521. Angled through hole, 522. Cutting knife holder, 523. Notch, 53. Angled top block. 531. First inclined surface, 532. Second inclined surface, 54. Limiting block, 6. Cutter, 7. Paper pressing table linkage piece, 71. Abutment plate, 72. Opening groove, 8. Paper pressing table, 81. Matching rod, 9. Drive gear, 10. Cover, 101. First through hole, 102. Second through hole, 11. First reset elastic element, 12. Second reset elastic element, 13. Third reset elastic element, 14. Fixing rod, 15. Guide pin, 16. Elastic positioning structure, 161. Base, 162. Elastic hook, 1621. First part, 1622. Second part, 1623. Third part, 1624. Arc-shaped surface, 1625. Recess. Detailed Implementation

[0041] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the embodiments and accompanying drawings. Obviously, the described embodiments are merely preferred embodiments, and not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this invention.

[0042] Furthermore, it should be noted that when a component is referred to as being "fixed to" another component, it can be directly on the other component or it may be fixed via another intermediate component. When a component is considered to be "connected to" another component, it can be directly connected to the other component or it may be fixed via another intermediate component. When a component is considered to be "set on" another component, it can be set directly on the other component or it may be fixed via another intermediate component. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only; unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the specification of this invention is for the purpose of describing particular embodiments only and is not intended to limit the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0043] As attached Figure 1-16The image shows a binding machine according to this application. The binding machine includes a base 1 and an integrated frame 2 mounted on the base 1. The frame 2 is equipped with a riveting assembly 3, a punching assembly 4, and a tube cutting assembly 5. The riveting assembly 3 and the punching assembly 4 are slidably fitted side-by-side on one side of the frame 2 and can slide up and down relative to the frame 2. The tube cutting assembly 5 is slidably fitted on the other side of the frame 2. The riveting assembly 3 includes a first handle 31 and a first and second moving blocks 422. The first handle 31 drives the first and second moving blocks 422 to slide up and down along the frame 2 for riveting and resetting. The punching assembly 4 includes a second handle 41 and a second moving block 42. The second handle 41 drives the second moving block 42 to slide up and down within the frame 2 for punching and resetting. The tube cutting assembly 5 includes a slider 51 slidably fitted vertically within the frame and a tube cutting assembly that slides obliquely to the slider 51. The cutting component 52, when the second moving block 42 slides up and down, can abut against the slider 51 to drive the slider 51 to slide up and down accordingly; when the slider 51 slides down, the cutting component 52 is driven by the slider 51 to move horizontally to cut the rivet tube; when the slider 51 slides up, the cutting component 52 is driven by the slider 51 to move horizontally in the opposite direction to reset; specifically, the frame 2 of the binding machine of this application is an integrated frame, so the riveting component 3, the punching component 4 and the tube cutting component 5 can all be integrated on the integrated frame, and the riveting component 3 and the punching component 4 are set on one side wall of the frame, while the tube cutting component 5 can be set on the other side wall perpendicular to the side wall. This layout can improve the degree of integration, occupy less space, and make full use of the three-dimensional space of the integrated frame 2, so that the three important components can be centrally set on the frame to realize their respective functions.

[0044] With the above structure, both the drilling component 4 and the riveting component 3 of this application are slidably fitted onto the integrated frame 2, eliminating the need for two separate component structures and effectively saving space. Furthermore, both the riveting component 3 and the drilling component 4 are driven by a handle to move their moving blocks up and down, making operation convenient. They can also operate independently without interfering with each other. Additionally, this application also includes a pipe cutting component 5 on the integrated frame 2, which is connected to the frame 2, eliminating the need for a separate pipe cutting structure. This allows for efficient cutting of riveted pipes. The process is more stable; moreover, this application connects the drilling component 4 and the pipe cutting component 5 through the abutting linkage between the second moving block 42 and the slider 51, which can realize the pipe cutting operation at the same time as drilling, effectively improving the efficiency of the whole machine; moreover, the pipe cutting component 5 can always move horizontally during the cutting of the riveting pipe, so that the cutting surface of the riveting pipe is flat, which provides a guarantee for subsequent riveting; in addition, the drilling component and the pipe cutting component of this application are always linked by the upper and lower abutting method. This method has a stable contact, smooth operation, and accurate reset, thereby effectively ensuring the stability of pipe cutting.

[0045] As attached Figure 3-8 As shown, the frame 2 of this application is provided with a vertically extending slide groove 21, the slider 51 is slidably engaged in the slide groove 21, and the slider 51 is provided with an inclined top block 53; the cutter 52 is provided with an inclined through hole 521, and the inclined top block 53 is slidably fitted in the inclined through hole 521; the slider 51 is used to slide up and down along the slide groove 21 so that the inclined top block 53 drives the cutter 52 to move in the horizontal direction to cut the rivet tube or move away from the rivet tube; specifically, the cutter 52 includes a cutter holder 522 and a cutter 6, the cutter 6 is fixedly connected to the cutter holder 522 by rivets or bolts, and the cutter 52... One end of the cutter 6 can be called the cutting end, and the other end is the driving end, while the oblique through hole 521 is set on the driving end. With the above structure, this application abandons the traditional complex drive mechanism for cutting tubes. Instead, by setting a simple slider 51 structure, the trajectory of the slider 51 sliding up and down along the slide groove 21 can be transformed into the trajectory of the cutter 52 sliding horizontally left and right. This sliding cooperation between the oblique top block 53 and the oblique through hole 521 is simple in structure, occupies little space, and is more stable in operation. Therefore, it can achieve precise cutting of the rivet tube and the cutting surface is flat. Moreover, the two are firmly engaged and not easy to slip or loosen, and the cutter 6 always moves horizontally.

[0046] As attached Figure 3-8As shown, one end of the cutter 52 described in this application is a driving end, and the other end is a cutting end. The oblique through hole 521 is provided at the driving end. The oblique top block 53 is inclined from top to bottom from the cutting end toward the driving end. The side of the oblique top block 53 facing the cutting end is the first oblique surface 531, and the side facing the driving end is the second oblique surface 532. Specifically, as shown in the attached... Figure 7 As shown, the oblique through hole 521 of this application is provided on the cutter holder 522, and the oblique through hole 521 is also an obliquely extending hole. Its oblique direction is adapted to the two oblique surfaces mentioned above. The first oblique surface 531 and the second oblique surface 532 are respectively located near the end of the cutter 6 (cutting end) and away from the end of the cutter 6 (driving end). When the slider 51 slides down along the slide groove 21 under the drive of external force, the first oblique surface 531 will push the cutter 52 towards the end of the cutter 6 (cutting end), thereby... The cutting of the rivet tube is achieved by the horizontal movement of the cutter 6; while when the slider 51 slides upward along the slide groove 21 under the drive of external force, the second inclined surface 532 pushes the cutter 52 to slide in the direction of the drive end, thereby causing the cutter 6 to move away from the rivet tube and reset. This structure does not require a complex cutter drive device. The rivet tube can be cut and moved away by simply driving the cutter 52 to move horizontally by sliding the slider 51 up and down, saving the space occupied by the device and making the overall device more compact.

[0047] As attached Figure 6 and Figure 8 As shown, the inclined top block 53 described in this application is provided with limit blocks 54 at both its upper and lower ends. The limit blocks 54 can abut against the upper and lower surfaces of the cutter 52 in the thickness direction. Specifically, the limit blocks 54 are arranged at the upper and lower ends and are connected to the inclined top block 53 to form a Z-shaped structure. During the sliding process of the inclined top block 53, due to the limiting effect of the limit blocks 54, when cutting the rivet, the upper limit block 54 can abut against the upper surface of the cutter 52 to control the position of the cutter 6 when the slider 51 moves downward. When the rivet does not need to be cut, the slider 51 moves upward and the lower limit block 54 can abut against the lower surface of the cutter 52 to make the cutter 6 avoid the position of the rivet. The setting of the limit blocks 54 can also prevent the inclined top block 53 from disengaging from the inclined through hole 521, thereby improving the stability of driving the cutter 6 to cut the rivet and the stability of resetting.

[0048] As attached Figure 6-8As shown, the oblique through hole 521 described in this application has a notch 523 on one side along the width direction of the cutter 52. The oblique top block 53 slides into the oblique through hole 521 from the notch 523. Specifically, a notch 523 is provided on the outer side of the oblique through hole 521, so that it is not a closed-loop through hole structure. In this way, when assembling the slider 3 and the cutter 4, it is only necessary to push the notch 523 into place by aligning it with the oblique top block 53 from the notch 523 position on the side wall. The two do not need to be inserted and fitted in the up and down direction, making the combination more convenient and less restricted by the space occupied by the slide groove 21. Moreover, the two are also easier to disassemble. The extension depth of the oblique through hole 521 along the width direction of the cutter 4 is adapted to the thickness of the oblique top block 53. After the two are engaged, the side wall where the notch 523 is located can abut against the side wall of the slider 51. See details. Figure 6 The state diagram is shown below.

[0049] As attached Figure 3-5 As shown, the frame 2 described in this application is also provided with a vertically extending rivet tube channel 22, which is used to accommodate the rivet tube. The rivet tube channel 22 is located on the moving stroke of the cutter for cutting. Specifically, a vertically extending channel is provided on the frame 2, from which the rivet tube extends downward and can correspond to the end where the cutter 6 is located. When the cutter 6 approaches the rivet tube under the drive of the slider 51, it can cut the rivet tube laterally or radially. With this structure, the rivet tube channel 22 is also set on the frame 2, eliminating the need for a separate rivet tube support. Thus, the rivet tube and the cutting device of this application can be located on an integrated frame 2. During the cutting process of the cutter 6, the rivet tube is less likely to deviate, and the cutting is more precise.

[0050] As attached Figure 1-5 , Figure 15As shown, the frame 2 is also equipped with a paper-pressing table linkage piece 7 that is linked with the punching assembly. The paper-pressing table linkage piece 7 is rotatably connected to the frame near its center. One end of the paper-pressing table linkage piece 7 is rotatably engaged with the paper-pressing table 8, and the other end can abut against the rivet tube. Specifically, a rotating shaft can be provided on the frame 2, and a shaft hole is provided near the center of the paper-pressing table linkage piece 7 to rotate and engage with the rotating shaft. The point where the two engage and rotate serves as a fulcrum. A mating rod 81 extending toward the paper-pressing table linkage piece 7 is provided on the side wall of the paper-pressing table 8, corresponding to the paper-pressing... One end of the linkage plate 7, the end furthest from the abutment plate 71, is provided with an opening groove 72. This opening groove 72 and the mating rod 81 are rotatably engaged. When the punching assembly 4 is driven downward by external force, the paper pressing table 8 will also move downward. Under the combined force of the opening groove 72 and the mating rod 81, as well as the rotational action near the central fulcrum, the end of the paper pressing table linkage plate 7 that is engaged with the mating rod 81 also moves downward, causing the other end to move upward. This upward end can abut against the lower end of the rivet tube, fixing the rivet tube at a suitable height. At this time, the cutter 6 is exactly in the position to cut the rivet tube. See details below. Figure 4 As shown, the rivet tube is more stable in position with the support of the rivet tube channel 22 and the paper pressing table linkage plate 7 at one end, so the cutting is more precise.

[0051] As attached Figure 3 As shown, the paper pressing table linkage piece 7 described in this application has an abutment plate 71 at one end for abutting the rivet tube, and an arc-shaped track 23 is provided on the frame 2. The inner sidewall of the abutment plate 71 is used for sliding cooperation with the arc-shaped track 23. Specifically, an arc-shaped protrusion is provided on the frame 2, and the arc-shaped extension trajectory of the arc protrusion is the rotation trajectory of the paper pressing table linkage piece 7 near the end of the structure. With the above structure, when the paper pressing table linkage piece 7 rotates along the rotation axis between itself and the frame 2 under the action of driving force, its inner sidewall also slides back and forth along the contour of the arc-shaped track 23 under the support of the arc-shaped track 23. This structure makes the rotation of the paper pressing table linkage piece 7 more stable, playing a supporting and guiding role, thereby making the supporting role of the abutment plate 71 on the rivet tube more stable and precise, and preventing it from shifting position.

[0052] As attached Figure 2-5As shown, the frame 2 described in this application is further provided with a laterally extending cutting channel 24. The cutting blade 52 is used to slide within the cutting channel 24. The rivet tube channel 22 is provided with an outlet corresponding to the cutting end of the cutting blade 52. The outlet is connected to the cutting channel and extends radially along the rivet tube channel to the side away from the cutting end. Specifically, a clearance is provided on the rivet tube channel 22 and connected to the cutting channel 24, so that after the cutting blade 6 cuts the rivet tube, the cutting blade 6 can laterally cut the rivet tube along the outlet, giving the cutting blade 6 sufficient space to cut the rivet tube.

[0053] As attached Figure 9-11 As shown, the upper and lower ends of the slider 51 described in this application are respectively provided with a first abutting block 511 and a second abutting block 512 extending toward the second moving block 42; the first abutting block 511 and the second abutting block 512 can abut against the second moving block 42; when the first abutting block 511 abuts against the second moving block 42, the second moving block 42 drives the slider 51 upward to drive the cutting end of the cutter 522 to move horizontally away from the rivet tube; when the second abutting block 512 abuts against the second moving block 42, the second moving block 42 drives the slider 51 downward to drive the cutter 522 to move horizontally to cut the rivet tube; specifically, the aforementioned first abutting block 511 The second abutment block 512 is located at the lower end of the slider 51 and extends toward the side where the second moving block 42 is located. The second moving block 42 extends into the gap between the first abutment block 511 and the second abutment block 512. So, when the second moving block 42 is driven by the second handle 41 to slide up and down, it can abut against the first abutment block 511 and the second abutment block 512 respectively, so as to drive the slider 51 to slide up and down and generate linkage. During the drilling process, the slider 51 follows downward so that the cutting end of the cutter 522 cuts the rivet tube. During the non-drilling reset process, the slider 51 can be driven upward so that the cutting end of the cutter 52 disengages from the rivet tube.

[0054] As attached Figure 9-11As shown, the second moving block 42 described in this application is used to abut against the first abutting block 511 and the second abutting block 512 at the first abutting position 421 and the second abutting position 422, respectively. The first abutting position 421 is platform-shaped, and the second abutting position 422 is a stepped groove recessed towards the upper end of the second moving block 42. Specifically, the first abutting position 421 at the upper end of the second moving block 42 is set as a platform shape, while the second abutting position 422 is set as a stepped groove. When the lower end face of the first abutting block 511 abuts against the first abutting position 421, both are flat surfaces in contact without any drop. However, when the second abutting position 422 and the second abutting block 512 come into contact, due to the setting of the stepped groove, the lower end of the second moving block 42 must descend a certain distance before it can abut against the stepped groove and drive the slider 51 to descend. This can effectively control the second moving block 42 to accurately drive the slider 51 to cut the rivet tube, avoiding the situation where the rivet tube is not cut completely due to insufficient stroke.

[0055] As attached Figure 9-11 As shown, the distance between the first abutment position 421 and the second abutment position 422 in the upper and lower directions is smaller than the distance between the first abutment block 511 and the second abutment block 512 in the upper and lower directions. Specifically, due to the limitation of the distance mentioned above, when the second moving block 42 descends, there is a part of its stroke that will not contact the slider 51. After descending to the appropriate drilling position, the second abutment block 402 that abuts the slider 51 drives the cutting end of the cutter 522 to cut the rivet tube, thus completing the cutting of the rivet tube while drilling. Moreover, this setting can also effectively control the stroke of the drilling component, so that the drilling component can perform effective drilling.

[0056] As an example, when the second moving block 42 disengages from the slider 51, the slider 51 remains stationary relative to the cutter 52 due to the contact between the inclined top block 53 and the inclined through hole 521. Because of this inclined engagement, when the second moving block 42 is not in contact with the slider 51, the slider 51 will not slide up or down relative to the cutter 52 under the resistance generated by the inclined engagement. This prevents the slider 51 from sliding down due to its own weight without the support of the second moving block 42. If the slider 51 slides down under its own weight, the cutting force generated by its own weight on the cutter 52 will be small, making it difficult to cut the rivet. It will also cause the distance between the slider 51 and the second moving block 42 to be too large, thus preventing the second moving block 42 from pushing the slider 51 downwards within its effective stroke to effectively cut the rivet.

[0057] As attached Figure 12As shown, a limiting step surface 211 is provided near the upper end of the slide groove 21 described in this application. The limiting step surface 211 is used for the first abutting block 511 to abut against it. Specifically, a through hole is provided near the upper end of the slide groove 21, extending along the wall thickness direction of the frame 2. This through hole allows the first abutting block 511 of the slider 51 to pass through so as to abut against the second moving block 42. One side wall of the through hole forms the limiting step surface 211. The extension length of the through hole in the vertical direction is greater than the thickness of the first abutting block 511, so as to ensure that the slider 51 abuts against the second moving block 42. The slider 51 moves up and down within the through hole; the second abutting block 512 extends directly from the lower end of the slide groove 21 in the thickness direction to the side of the second moving block 42 to abut against it; the slider 51 can slide precisely up and down within the slide groove 21 under the drive of the second moving block 42 to achieve cutting and moving away from the rivet tube, with accurate reset and less prone to deviation; when the first abutting block 511 of the slider 51 abuts against the limiting step surface 211, the slider 51 will no longer slide down and can achieve complete cutting of the rivet tube by the cutting tool 52 at this time, thereby avoiding jamming or inaccurate reset that may be caused by excessive sliding down of the slider 51.

[0058] As attached Figure 1 , Figure 12-13 , Figure 15-16As shown, both the first handle 31 and the second handle 41 described in this application are provided with drive gears 9, and the corresponding first moving block 32 and the second moving block 42 are provided with first racks 341 that mesh with the drive gears 9. The frame 2 is provided with a second rack 25. The first rack 341 and the second rack 25 are arranged parallel to each other and both mesh with the drive gears 9. Two gears are provided in axial contact, and the two gears and the gears and the handle can also be connected by a square shaft. In the above manner, the drive gears 9 also rotate during the rotation of the handle. With this structure, when the handle is pressed down, the handle moves... The rotating drive gear 9, through meshing with the rack, converts into a downward linear motion of the moving block, thus achieving drilling and riveting actions. During the reverse rotation of the handle for reset, it meshes with the rack again, converting into an upward linear motion of the moving block, thus resetting the drilling and riveting components. Furthermore, the double rack meshing method makes pressing down the handle less strenuous, while still providing sufficient drilling and pressing force. This is because the meshing and driving method of the two racks and drive gear 9 results in the moving block's downward movement during handle rotation consisting of two parts: the first part is the handle driving the drive gear... As the drive gear 7 rotates, it engages with the moving block. The rotation of the drive gear 7 causes the moving block to move downwards, which is the first part of the stroke, representing the actual downward movement of the moving block. Simultaneously, as the drive gear 9 engages with the second rack 25, the drive gear 7 moves downwards along the second rack 25. The actual movement of the drive gear 9 also causes the moving block to move downwards. Therefore, the actual movement of the drive gear 9 is the second part of the stroke. For the first part of the stroke, assuming the drive gear 9 rotates by the same angle, the diameter of the drive gear determines the size of the first stroke. This allows the drive gear of this mating structure to... The diameter of the wheel is set smaller than that of the drive gear in the prior art of single rack. The smaller gear diameter is compensated by the second stroke. Therefore, even if the gear diameter is smaller, the downward stroke of the moving block and the corresponding riveting assembly 3 and drilling assembly 4 can still be the same as that of the prior art, provided that the handle is rotated by the same angle. Moreover, since the diameter of the gear is smaller than that of the prior art, the lever arm of the riveting assembly 3 and the drilling assembly 4 is smaller than that of the prior art with the shaft as the fulcrum. According to the principle of torque balance, with the same binding material as the drilling object, the present application only needs to apply less force to the handle to complete the drilling and riveting action, making the operation more labor-saving.

[0059] As attached Figure 9 and Figure 16As shown, at least two drive gears 9 are provided on both the first handle 31 and the second handle 41, and the two drive gears 9 are symmetrically arranged on both sides along the thickness direction of the handle. The corresponding first moving block 32 and the second moving block 42 are each provided with two first racks 341 that mesh with the two drive gears 9 respectively. That is, each handle is provided with at least one set of gears symmetrically arranged on the left and right sides along its thickness direction, and the corresponding moving block is also provided with a first rack 314 that meshes with it. With this structure, during the rotation of the handle, the drive gears 9 on both sides can be driven to push the moving block to move up and down more evenly and smoothly, so as to realize the stable implementation of drilling and driving riveting cutting.

[0060] As attached Figure 14-16 As shown, the frame 2 described in this application is further covered with a cover 10, which encloses the first moving block 32 and the second moving block 42. A first reset elastic member 11 is connected between the cover 10 and the first moving block 32, and the first reset elastic member 11 is used to slide the first moving block 32 upward to reset. A second reset elastic member 12 is connected between the cover 10 and the second moving block 42, and the second reset elastic member 12 is used to slide the second moving block 42 upward to reset. Specifically, a groove is provided on the top surface of the cover 10, and a fixing rod 14, such as a bolt structure, is engaged in the groove. One end of the reset elastic member is sleeved on the fixing rod 14, and the other end is sleeved on the sleeve extending from the side wall of the moving block. On the column, when the handle is pressed down, the moving block moves downward and the elastic element is stretched. When the force on the handle is removed, the moving block can be automatically reset and moved upward due to the reset action of the reset elastic element. With this structure, the moving block can be encapsulated between the cover 10 and the frame 2, avoiding external interference during its operation. In addition, the setting of the first reset elastic element 11 and the second reset elastic element 12 can also automatically reset the riveting and drilling components upward with the corresponding reset elastic elements after the riveting and drilling actions are completed, without the need to manually reset the riveting and drilling components. Therefore, the convenience and efficiency of operation are improved. The reset element can be a straight spring, which has a relatively long service life and can ensure the stability and reliability of the reset function under normal use conditions.

[0061] As attached Figure 15As shown, the second movable block 42 described in this application is further connected below the paper pressing table 8 and a guide shaft 43 that can slide up and down relative to the second movable block 42. The paper pressing table 8 is installed at the bottom of the guide shaft 43, and the paper pressing table 8 is movably connected to the second movable block 42 through the guide shaft 43. A third reset elastic member 13 is fitted on the guide shaft 43. One end of the third reset elastic member 13 abuts against the paper pressing table 8, and the other end abuts against the second movable block 42. Specifically, the guide shaft 43 extends vertically, with its upper end slidingly engaging with the guide sleeve provided on the movable block, and its lower end connected to the paper pressing table. During the pressing process, the block also moves downwards and slides within the guide sleeve. With this structure, the third reset elastic element 13 can provide a stable elastic buffer between the paper pressing table 8 and the second moving block 42. During the contact and separation process between the paper pressing table 8 and the paper, the elastic deformation of the third reset elastic element 13 can absorb and release energy, thereby reducing the impact force. When the punching operation is completed, the second reset elastic element 12 releases elastic potential energy, pushing the second moving block 42 to reset. At the same time, the third reset elastic element 13 also releases elastic potential energy, pushing the paper pressing table 8 to return smoothly to the initial position, avoiding paper damage caused by hard contact.

[0062] As attached Figure 14-16 As shown, the riveting assembly 3 of this application includes a guide pin 15. The faceplate 10 is provided with a through hole 101 for the guide pin 15 to slide through. The faceplate 10 is also provided with an elastic positioning structure 16 adapted to the guide pin 15. The guide pin 15 passes through the through hole 101 into the riveting assembly 3. The elastic positioning structure 16 is used to elastically clamp the guide pin 15. With this structure, when the guide pin is in a stationary state and placed in the through hole 101, the elastic positioning structure 16 has a certain pressing effect on the guide pin 15, so that the guide pin 15 has a certain damping feeling and will not fall off at will.

[0063] As attached Figure 17-18 As shown, the elastic positioning structure 16 described in this application includes a base 161 and an elastic hook 162. The base 161 and the elastic hook 162 cooperate to elastically clamp the guide pin 15. The base 161 serves as the basic part of the elastic positioning structure 16 and is fixed on the cover 10, providing support and connection functions. The elastic hook 162 has a certain elastic deformation capability and can provide appropriate clamping force during the sliding of the guide pin 15. The base 161 and the elastic hook 162 cooperate to ensure that the guide pin 15 will not automatically fall off during the sliding process.

[0064] As attached Figure 17-18As shown, a second through hole 102 is provided between the base 161 and the elastic hook 162 described in this application. The second through hole 102 is disposed opposite to the first through hole 101. The guide pin 15 passes through the second through hole 102 and then connects to the first through hole 101. The second through hole 102 between the base 161 and the elastic hook 162 provides an additional sliding path for the guide pin 15, ensuring that the guide pin 15 can smoothly enter the first through hole 101 after passing through the second through hole 102, providing double protection for the guide pin 15 and further improving the stability and reliability of the guide pin 15.

[0065] As attached Figure 17-18 As shown, the elastic hook 162 described in this application includes a first part 1621, a second part 1622, and a third part 1623 connected in sequence. The first part 1621 is connected to the base 51, and the third part 1623 is used to press against the guide pin 15. The first part 1621 and the third part 1623 are connected through the second part 1622. The first part 1621 is connected to the base 51 to provide stable support and connection. The second part 1622 connects the first part 1621 and the third part 1623, which serves as a transition and elastic deformation function. The third part 1623 is used to press against the guide pin 15 to provide clamping force and ensure that the guide pin 15 will not fall off during sliding.

[0066] As attached Figure 17 As shown, the third part 1623 described in this application is located between the first part 1621 and the cover 10, ensuring the overall structural stability of the elastic hook 162, while providing sufficient space to achieve elastic deformation. The end of the third part 1623 facing the first through hole 101 is located on the stroke of the guide pin 15 passing through the second through hole 102 and the first through hole 101, and the end of the third part 1623 is located on the sliding stroke of the guide pin 15, ensuring that the guide pin 15 can fully contact the third part 1623 during the sliding process, providing a stable clamping force.

[0067] As attached Figure 18 As shown, the third part 1623 of this application is provided with an arc-shaped surface 1624. The arc-shaped surface 1624 is used to abut against the guide pin 15, providing a stable clamping force and a soft contact point, reducing friction and wear of the guide pin 15 during the sliding process, and extending the service life of the guide pin 15.

[0068] As attached Figure 18As shown, the third part 1623 of this application is provided with a recess 1625 adapted to the guide pin 15. The third part 1623 fits into the guide pin 15 through the recess 1624. The shape and size of the recess 1624 match the outer surface of the guide pin 15, ensuring that it fits tightly during the sliding process of the guide pin 15, so that the guide pin 15 will not deviate or shake during the sliding process, and also reducing the wear of the elastic hook 162 itself, thus improving the durability of the entire elastic positioning structure 5.

[0069] As attached Figure 14-16 As shown, the elastic positioning structure 16 and the cover 10 are integrally molded. The elastic positioning structure 16 and the cover 10 adopt an integral molding design, which eliminates the need for additional installation steps, reduces assembly complexity and production costs, and also reduces the risk of failure caused by loose or detached parts. Since the elastic positioning structure 16 is directly integrated on the cover 10, it does not add additional installation requirements and maintains the compact design of the binding machine.

[0070] The binding machine described in this application has a compact structure, occupies little space, and is easier to operate. Moreover, the punching component and the tube cutting component can work together to improve the overall efficiency of the machine. In addition, the tube cutting component, through the oblique sliding cooperation between the vertically sliding slider and the horizontally sliding cutter, can drive the cutting end of the cutter to move horizontally during the vertical sliding of the slider, so as to cut the rivet tube or reset and move away from the rivet tube. The resulting cut surface is flat, the cutter is not easy to jam during the horizontal movement, the two components work closely and firmly, and the operation is stable.

Claims

1. A binding machine, the binding machine comprising a base (1), characterized in that: A frame (2) is mounted on a base (1). The frame (2) is equipped with a riveting assembly (3), a drilling assembly (4), and a pipe cutting assembly (5). The riveting assembly (3) and the drilling assembly (4) are slidably fitted side-by-side on one side of the frame (2) and can slide up and down relative to the frame (2). The pipe cutting assembly (5) is slidably fitted on the other side of the frame (2). The riveting assembly (3) includes a first handle (31) and a first moving block (32). The first handle (31) is used to drive the first moving block (32) to slide up and down along the frame (2) for riveting and resetting. The drilling assembly (4) includes a second handle (41) and a second moving block (42). The handle (42) is used to drive the second moving block (42) to slide up and down in the frame (2) to drill holes and reset; the pipe cutting assembly (5) includes a slider (51) that slides vertically in the frame (2) and a cutting blade (52) that slides obliquely in the slider (51). When the second moving block (42) slides up and down, it can abut against the slider (51) to drive the slider (51) to slide up and down. When the slider (51) slides down, the cutting blade (52) is driven by the slider (51) to move horizontally to cut the rivet. When the slider (51) slides up, the cutting blade (52) is driven by the slider (51) to move horizontally in the opposite direction to reset.

2. The binding machine according to claim 1, characterized in that: The frame (2) is provided with a vertically extending slide groove (21), the slider (51) is slidably engaged in the slide groove (21), and the slider (51) is provided with an inclined top block (53); the cutter (52) is provided with an inclined through hole (521), and the inclined top block (53) is slidably fitted in the inclined through hole (521); the slider (51) is used to slide up and down along the slide groove (21) so that the inclined top block (53) drives the cutter (52) to move in the horizontal direction to cut the rivet tube or move away from the rivet tube.

3. The binding machine according to claim 2, characterized in that: One end of the cutter (52) is the driving end, and the other end is the cutting end. The oblique through hole (521) is provided on the driving end. The oblique top block (53) is inclined from the cutting end toward the driving end from top to bottom. The side of the oblique top block (53) facing the cutting end is the first oblique surface (531), and the side facing the driving end is the second oblique surface (532). The oblique through hole (521) is provided with a notch (523) on one side along the width direction of the cutter (52), and the oblique top block (53) slides in cooperation with the oblique through hole (521) from the notch (523).

4. The binding machine according to claim 4, characterized in that: When the second moving block (42) disengages from the slider (51), the slider (51) remains stationary relative to the cutter (52) through the contact action between the inclined top block (53) and the inclined through hole (521).

5. The binding machine according to claim 1, characterized in that: The frame (2) is also provided with a paper pressing table linkage piece (7) that is linked with the punching assembly (4). The middle position of the paper pressing table linkage piece (7) is rotatably connected to the frame (2). One end of the paper pressing table linkage piece (7) is rotatably engaged with the paper pressing table (8) of the punching assembly (4), and the other end can abut against the rivet tube. The paper pressing table linkage plate (7) is provided with an abutment plate (71) at one end for abutting the rivet tube. The frame (2) is provided with an arc-shaped track (23). The inner side wall of the abutment plate (71) is used for sliding cooperation with the arc-shaped track (23).

6. The binding machine according to claim 1, characterized in that: The upper and lower ends of the slider (51) are respectively provided with a first abutting block (511) and a second abutting block (512) extending toward the second moving block (42); the first abutting block (511) and the second abutting block (512) can abut against the second moving block (42); when the first abutting block (511) abuts against the second moving block (42), the second moving block (42) drives the slider (51) to move upward to drive the cutting end of the cutter (52) to move horizontally away from the rivet tube; when the second abutting block (512) abuts against the second moving block (42), the second moving block (42) drives the slider (51) to move downward to drive the cutter (52) to move horizontally to cut the rivet tube.

7. The binding machine according to claim 6, characterized in that: The second moving block (42) is positioned at the first abutting position (421) and the second abutting position (422) of the first abutting block (511) and the second abutting block (512), respectively. The first abutting position (421) is platform-shaped, and the second abutting position (422) is a stepped groove recessed towards the upper end of the moving block. The distance between the first abutment position (421) and the second abutment position (422) in the upper and lower directions is less than the distance between the first abutment block (511) and the second abutment block (512) in the upper and lower directions.

8. The binding machine according to claim 1, characterized in that: The frame (2) is also covered with a cover (10), which is used to enclose the first moving block (32) and the second moving block (42). A first reset elastic member (11) is connected between the cover (10) and the first moving block (32), which is used to make the first moving block (32) slide upward and reset. A second reset elastic member (12) is connected between the cover (10) and the second moving block (42), which is used to make the second moving block (42) slide upward and reset.

9. The binding machine according to claim 8, characterized in that: Below the second movable block (42) is a paper pressing table (8) and a guide shaft (43) that can slide up and down relative to the second movable block (42). The paper pressing table (8) is installed at the bottom of the guide shaft (43) and is movably connected to the second movable block (42) through the guide shaft (43). A third reset elastic member (13) is fitted on the guide shaft (43). One end of the third reset elastic member (13) abuts against the paper pressing table (8) and the other end abuts against the second movable block (42).

10. The binding machine according to claim 9, characterized in that: The riveting assembly (3) includes a guide pin (15). The cover (10) is provided with a first through hole (101) through which the guide pin (15) slides. The cover (10) is also provided with an elastic positioning structure (16) adapted to the guide pin (15). The guide pin (15) passes through the first through hole (101) into the riveting assembly (5). The elastic positioning structure (16) is used to elastically clamp the guide pin (15). The elastic positioning structure (16) and the cover (10) are integrally formed.

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