Screw clamping device and screw disassembling and assembling tool
By designing the main body, clamping mechanism, and guide structure of the screw clamping device, the operational hazards and positioning accuracy problems in the traditional screw holding method were solved, achieving stable screw clamping and positioning accuracy, and improving construction quality and structural strength.
Patent Information
- Application Number
- CN202512056397.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-31
- Publication Date
- 2026-02-24
AI Technical Summary
Traditional screw-holding methods suffer from high operational risks and difficulty in ensuring positioning accuracy. Existing auxiliary tools lack sufficient clamping stability, making it difficult to guarantee screw positioning accuracy and perpendicularity.
A screw clamping device is designed, including a main body, a clamping mechanism and a guide structure. When the clamping mechanism moves between the clamping position and the release position, the guide structure forces the first clamping arm and the second clamping arm to open, ensuring stable clamping and positioning accuracy of the screw.
This achieves stable clamping and positioning accuracy of screws, reduces operational risks, and improves construction quality and structural strength.
Smart Images
Figure CN121552291A_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of screw removal and assembly tools, and in particular to a screw clamping device and a screw removal and assembly tool. Background Technology
[0002] In construction, home decoration, and woodworking, nailing screws is a basic and frequent operation. Traditional nailing mainly relies on the operator holding the nail with their bare hand and using a hammer to strike it with the other hand. This traditional nail-holding method has the following significant technical defects and safety hazards: (1) High operational risk: When the operator holds the nail with their bare hand, it is easy to cause finger injuries, contusions, or even serious work-related accidents; (2) Difficulty in ensuring positioning accuracy and verticality: Especially in the initial hammering stage, it is difficult to ensure that the nail is strictly perpendicular to the working surface by hand. Slight tilting may cause the nail to bend, deviate from the preset position, or cause the wood and other substrates to crack, affecting the construction quality and structural strength.
[0003] To address the aforementioned issues, some simple auxiliary tools have emerged on the market. While these tools can replace manual screw holding to some extent, they still have the following shortcomings: (1) insufficient stability in screw clamping; (2) difficulty in ensuring the positioning accuracy and perpendicularity of the screw during its entry into the workpiece.
[0004] To address the aforementioned technical problems, this application proposes a screw clamping device and a screw removal and installation tool. Summary of the Invention
[0005] This application provides a screw clamping device and a screw removal and installation tool to solve the technical problems of operational hazards and difficulty in ensuring positioning accuracy in traditional screw holding methods.
[0006] The embodiments of this application provide the following technical solutions to solve the above-mentioned technical problems: A screw clamping device includes: a main body having a mounting cavity and an opening communicating with the mounting cavity; a clamping mechanism including a first clamping arm and a second clamping arm hinged to each other within the main body, the clamping mechanism having a clamping position for clamping a screw and a releasing position for releasing a screw, the clamping mechanism being configured to move between the clamping position and the releasing position; and a guide structure disposed within the main body, the guide structure being configured to guide the first clamping arm and the second clamping arm, the guide structure forcing the first clamping arm and the second clamping arm to open when the clamping mechanism moves from the clamping position to the releasing position.
[0007] The beneficial effects of the embodiments of this application are as follows: The screw clamping device and screw disassembly and assembly tool provided in the embodiments of this application replace the traditional auxiliary tools. By setting the main body, clamping mechanism and guide structure, when the clamping mechanism moves from the clamping position to the release position, the guide structure forces the first clamping arm and the second clamping arm to open stably, thereby clamping the screw stably. The opening and clamping stability is good. At the same time, during the process of the screw being drilled into the workpiece, the positioning accuracy and perpendicularity of the screw can be guaranteed.
[0008] In one possible implementation, the screw clamping device further includes a clamping reset mechanism disposed within the main body, the clamping reset mechanism causing the clamping mechanism to reset from the release position to the clamping position.
[0009] In one possible implementation, the main body is provided with an oblong hole, the long axis of which is in the same direction as the movement direction of the clamping mechanism; the first clamping arm and the second clamping arm are hinged by a hinge shaft, which is movably installed in the oblong hole.
[0010] In one possible implementation, both the first clamping arm and the second clamping arm include a first inclined portion, the two first inclined portions are connected by a hinge shaft, and a first clamping portion with a clamping screw is provided at one end of a portion of the first inclined portion that extends out of the mounting cavity.
[0011] In one possible implementation, the first inclined portion is further provided with a first abutting portion at the end away from the first clamping portion.
[0012] In one possible implementation, the guide structure includes a first guide surface and a second guide surface, the first guide surface and the second guide surface being opposite to each other; a first clamping arm and a second clamping arm are disposed between the first guide surface and the second guide surface, the first clamping arm moves along the first guide surface, the second clamping arm moves along the second guide surface, and the first guide surface and the second guide surface cooperate to force the first clamping arm and the second clamping arm to open.
[0013] In one possible implementation, the first guide surface is the first inner wall of the mounting cavity, and / or the second guide surface is the second inner wall of the mounting cavity, with the first and second inner walls being opposite sides.
[0014] In one possible implementation, the first guide surface includes a second section surface, and the second guide surface includes a fourth section surface; when the first clamping arm and the second clamping arm move from the clamping position to the release position, the two first abutting parts slide along the second section surface and the fourth section surface respectively, and the second section surface and the fourth section surface force the first clamping arm and the second clamping arm to open.
[0015] In one possible implementation, the first guide surface further includes a first segment surface, wherein the first segment surface and the second segment surface are arranged adjacent to each other along a boundary line L, and at at least one point on the boundary line L, the included angle between the tangent plane of the first segment surface and the tangent plane of the second segment surface is an obtuse angle α; the second guide surface further includes a third segment surface, wherein the third segment surface and the fourth segment surface are arranged adjacent to each other along a boundary line L, and at at least one point on the boundary line L, the included angle between the tangent plane of the third segment surface and the tangent plane of the fourth segment surface is an obtuse angle α.
[0016] In one possible implementation, the first and second segments are both planes, and the dihedral angle between them is an obtuse angle α; the third and fourth segments are both planes, and the dihedral angle between them is an obtuse angle α.
[0017] In one possible implementation, an arc-shaped transition surface is provided between the first and second segments, as well as between the third and fourth segments.
[0018] In one possible implementation, a connecting surface is further provided between the first guide surface and the second guide surface.
[0019] In one possible implementation, the connecting surface is the seventh inner wall of the mounting cavity, which is opposite to the opening of the main body.
[0020] In one possible implementation, the clamping reset mechanism includes a torsion spring, the spring coil of which is sleeved on the hinge shaft, and the two torsion arms of the torsion spring respectively abut against the first clamping arm and the second clamping arm.
[0021] In one possible implementation, the clamping reset mechanism further includes a second elastic element disposed between the hinge shaft and the seventh inner wall.
[0022] In one possible implementation, both the first clamping arm and the second clamping arm include a middle portion. The middle portion has a third inclined portion at one end facing the main body opening and a fourth inclined portion at the end away from the third inclined portion. A portion of the third inclined portion has a second clamping portion at one end extending out of the mounting cavity. The two fourth inclined portions are connected by a hinge shaft. The hinge shaft is located inside the waist-shaped hole and can reciprocate along the long axis of the waist-shaped hole.
[0023] In one possible implementation, the guide structure includes a first guide post and a second guide post, which are respectively connected to the third sidewall of the mounting cavity. The first guide post and the second guide post are located between the first clamping arm and the second clamping arm. When the clamping mechanism moves from the clamping position to the release position, the first clamping arm and the second clamping arm move along the sidewalls of the first guide post and the second guide post, respectively, forcing the first clamping arm and the second clamping arm to open.
[0024] In one possible implementation, the first guide post and the second guide post are also connected to the fourth sidewall of the mounting cavity, with the fourth sidewall and the third sidewall being opposite sides.
[0025] In one possible implementation, the clamping and resetting mechanism includes a third elastic element disposed between the seventh inner wall and the hinge shaft.
[0026] In one possible implementation, a guide member is further provided between the third elastic member and the clamping mechanism. The guide member includes a first guide portion and a second guide portion, and a connecting portion is provided between the first guide portion and the second guide portion. A guide groove is provided inside the main body. The guide groove includes a fifth inner wall and a sixth inner wall. When the first clamping arm and the second clamping arm move from the clamping position to the release position, the first guide portion and the second guide portion move along the fifth inner wall and the sixth inner wall respectively and compress the third elastic member to deform. The third elastic member is located in the guide groove. One end of the third elastic member abuts against the seventh inner wall of the main body, and the other end abuts against the connecting portion. The seventh inner wall is opposite to the opening of the main body.
[0027] This application also provides a screw removal and installation tool, including a screw removal and installation tool body and a screw clamping device.
[0028] This application embodiment also provides a screw removal and installation tool, including a screw removal and installation tool body and the aforementioned screw clamping device; the screw clamping device is detachably connected to the screw removal and installation tool body, and the screw removal and installation tool body includes a storage compartment for storing the removed screw clamping device.
[0029] In one possible implementation, the storage compartment is located in the handle of the screw removal tool body.
[0030] The beneficial effects of the screw removal and installation tool provided in this application embodiment are the same as those of the screw clamping device described above, and will not be repeated here.
[0031] In addition to the technical problems solved by this application, the technical features constituting the technical solutions, and the beneficial effects brought about by the technical features of these technical solutions as described above, other technical problems that can be solved by the screw clamping device and fastening tool provided by this application, other technical features contained in the technical solutions, and the beneficial effects brought about by these technical features will be further explained in detail in the specific embodiments. Attached Figure Description
[0032] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.
[0033] Figure 1 This is a schematic diagram of the screw clamping device in the open state according to the first embodiment of this application; Figure 2 for Figure 1 Rear view; Figure 3 for Figure 2 Sectional view of AA; Figure 4 This is a schematic diagram of the clamping mechanism of the screw clamping device in the clamping state according to the first embodiment of this application; Figure 5 for Figure 4 Rear view; Figure 6 for Figure 5 BB section view; Figure 7 This is a schematic diagram of the internal structure of the screw clamping device in the open state according to the second embodiment of this application.
[0034] Figure 8 This is a schematic diagram of the internal structure of the screw clamping device in the clamping state according to the second embodiment of this application.
[0035] Figure 9 This is a schematic diagram of the external structure of the screw clamping device according to the second embodiment of this application.
[0036] Figure 10 This is a schematic diagram of the screw removal and assembly tool of this application. Figure 1 ; Figure 11 This is a schematic diagram of the screw removal and assembly tool of this application. Figure 2 ; Explanation of reference numerals in the attached figures: 1. Main body; 2. Clamping mechanism; 3. First clamping arm; 4. Second clamping arm; 5. Guide structure; 51. First guide surface; 511. First section surface; 512. Second section surface; 52. Second guide surface; 521. Third section surface; 522. Fourth section surface; 53. Connecting surface; 56. First guide post; 57. Second guide post; 58. Third side wall; 59. Fourth side wall; 6. Clamping and resetting mechanism; 61. Torsion spring; 62. Second elastic element; 63. Fixed post; 64. Third elastic element; 65. Connecting post; 7. First inclined part; 8. First clamping part; 9. First abutting part; 10. Hinge shaft; 11. Middle part; 12. Third inclined part; 13. Fourth inclined part; 14. Second clamping part; 15. Guide member; 151. First guide part; 152. Second guide part; 153. Connecting part; 16. Guide groove; 17. Waist-shaped hole; 18. Fifth inner wall; 19. Sixth inner wall; 20. Seventh inner wall; 21. Screw removal and installation tool body; 22. Storage compartment; 23. Handle.
[0037] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation
[0038] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of 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 application.
[0039] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in this application are only used to explain the relative positional relationship and movement of the components in a specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.
[0040] Furthermore, it should be noted that the use of terms such as "first" and "second" in this application is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly and specifically defined.
[0041] In this application, unless otherwise expressly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.
[0042] like Figure 1-11 As shown, this embodiment provides a screw clamping device, which includes: a main body 1 having a mounting cavity and an opening communicating with the mounting cavity; a clamping mechanism 2 including a first clamping arm 3 and a second clamping arm 4, the first clamping arm 3 and the second clamping arm 4 being hinged to each other and mounted in the main body 1, the clamping mechanism 2 having a clamping position for clamping screws and a releasing position for releasing screws, the clamping mechanism 2 being configured to move between the clamping position and the releasing position; and a guide structure 5 disposed in the main body 1, the guide structure 5 being configured to guide the first clamping arm 3 and the second clamping arm 4, the guide structure 5 forcing the first clamping arm 3 and the second clamping arm 4 to open when the clamping mechanism 2 moves from the clamping position to the releasing position.
[0043] In this embodiment, the screw clamping device further includes a clamping reset mechanism 6, which is disposed within the main body 1. The clamping reset mechanism 6 causes the clamping mechanism 2 to reset from the release position to the clamping position.
[0044] In this embodiment, the main body 1 is provided with a waist-shaped hole 17, the long axis of the waist-shaped hole 17 is in the same direction as the moving direction of the clamping mechanism 2; the first clamping arm 3 and the second clamping arm 4 are hinged by a hinge shaft 10, the hinge shaft 10 being movably installed in the waist-shaped hole 17.
[0045] In one possible embodiment, the first clamping arm 3 and the second clamping arm 4 both include a first inclined portion 7, the two first inclined portions 7 are connected by a hinge shaft 10, and a first clamping portion 8 with a clamping screw is provided at one end of the first inclined portion 7 that extends out of the mounting cavity.
[0046] It should be noted that any structure capable of clamping screws falls within the protection scope of this embodiment.
[0047] In one possible embodiment, the first inclined portion 7 is further provided with a first abutting portion 9 at the end away from the first clamping portion 8. The purpose of providing the first abutting portion 9 is to make the first clamping arm 3 and the second clamping arm 4 open more smoothly.
[0048] For example, the guide structure 5 includes a first guide surface 51 and a second guide surface 52, which are opposite to each other; the first clamping arm 3 and the second clamping arm 4 are disposed between the first guide surface 51 and the second guide surface 52, the first clamping arm 3 moves along the first guide surface 51, and the second clamping arm 4 moves along the second guide surface 52, and the first guide surface 51 and the second guide surface 52 cooperate to force the first clamping arm 3 and the second clamping arm 4 to open.
[0049] For example, the first guide surface 51 is the first inner wall of the mounting cavity, and / or the second guide surface 52 is the second inner wall of the mounting cavity, with the first inner wall and the second inner wall being opposite sides.
[0050] It should be noted that, in addition to being the inner wall of the mounting cavity itself, the first guide surface 51 and the second guide surface 52 can also be other guide surfaces that are detachably connected to the inner wall of the mounting cavity. As long as the structure can achieve the same function as the first guide surface 51 and the second guide surface 52, it falls within the protection scope of this embodiment.
[0051] Furthermore, the first guide surface 51 includes a second section surface 512, and the second guide surface 52 includes a fourth section surface 522; when the first clamping arm 3 and the second clamping arm 4 move from the clamping position to the release position, the two first abutting parts 9 slide along the second section surface 512 and the fourth section surface 522 respectively, and the second section surface 512 and the fourth section surface 522 force the first clamping arm 3 and the second clamping arm 4 to open.
[0052] Furthermore, the first guide surface 51 further includes a first segment surface 511, which is adjacent to the second segment surface 512 along a boundary line L. At at least one point on the boundary line L, the angle between the tangent plane of the first segment surface 511 and the tangent plane of the second segment surface 512 is an obtuse angle α. The second guide surface 52 further includes a third segment surface 521, which is adjacent to the fourth segment surface 522 along a boundary line L. At at least one point on the boundary line L, the angle between the tangent plane of the third segment surface 521 and the tangent plane of the fourth segment surface 522 is an obtuse angle α.
[0053] It should be noted here that the boundary line L is the intersection line of the first segment 511 and the second segment 512, as well as the intersection line of the third segment 521 and the fourth segment 522.
[0054] Furthermore, the first segment 511 and the second segment 512 are both planes, and the dihedral angle between them is an obtuse angle α; the third segment 521 and the fourth segment 522 are both planes, and the dihedral angle between them is an obtuse angle α.
[0055] In one possible embodiment, arc-shaped transition surfaces (not shown in the diagram) are provided between the first segment 511 and the second segment 512, and between the third segment 521 and the fourth segment 522. This not only ensures smooth guidance but also eliminates any possible stress concentration points.
[0056] Furthermore, a connecting surface 53 is provided between the first guide surface 51 and the second guide surface 52.
[0057] Furthermore, the connecting surface 53 is the seventh inner wall of the mounting cavity, and the seventh inner wall is opposite to the opening of the main body 1.
[0058] In one possible embodiment, the clamping and resetting mechanism 6 includes a torsion spring 61, the spring coil of the torsion spring 61 being sleeved on the hinge shaft 10, and the two torsion arms of the torsion spring 61 abutting against the first clamping arm 3 and the second clamping arm 4 respectively.
[0059] Furthermore, the clamping and resetting mechanism 6 also includes a second elastic element 62, which is disposed between the hinge shaft 10 and the seventh inner wall 20.
[0060] Furthermore, in order to prevent the second elastic member 62 from bending when compressed, a fixing post 63 is installed on the seventh inner wall 20 in this embodiment. The second elastic member 62 is sleeved on the fixing post 63, with one end of the second elastic member 62 abutting against the seventh inner wall 20 and the other end abutting against the hinge shaft 10.
[0061] In one possible embodiment, both the first clamping arm 3 and the second clamping arm 4 include a middle portion 11. The middle portion 11 has a third inclined portion 12 at one end facing the opening of the main body 1 and a fourth inclined portion 13 at the end away from the third inclined portion 12. A portion of the third inclined portion 12 has a second clamping portion 14 at the end extending out of the mounting cavity. The two fourth inclined portions 13 are connected by a hinge shaft 10. The hinge shaft 10 is located inside the waist-shaped hole 17 and can reciprocate along the long axis of the waist-shaped hole 17.
[0062] For example, the guide structure 5 includes a first guide post 56 and a second guide post 57, which are respectively connected to the third side wall 58 of the mounting cavity. The first guide post 56 and the second guide post 57 are located between the first clamping arm 3 and the second clamping arm 4. When the clamping mechanism 2 moves from the clamping position to the release position, the first clamping arm 3 and the second clamping arm 4 move along the side walls of the first guide post 56 and the second guide post 57, respectively, forcing the first clamping arm 3 and the second clamping arm 4 to open.
[0063] Furthermore, the first guide post 56 and the second guide post 57 are also connected to the fourth side wall 59 of the mounting cavity, and the fourth side wall 59 and the third side wall 58 are opposite sides.
[0064] In one possible embodiment, the clamping and resetting mechanism 6 includes a third elastic element 64 disposed between the seventh inner wall 20 and the hinge shaft 10.
[0065] Furthermore, a guide member 15 is provided between the third elastic member 64 and the clamping mechanism 2. The guide member 15 includes a first guide portion 151 and a second guide portion 152, and a connecting portion 153 is provided between the first guide portion 151 and the second guide portion 152. A guide groove 16 is provided inside the main body 1. The guide groove 16 includes a fifth inner wall 18 and a sixth inner wall 19. When the first clamping arm 3 and the second clamping arm 4 move from the clamping position to the release position, the first guide portion 151 and the second guide portion 152 move along the fifth inner wall 18 and the sixth inner wall 19 respectively and compress the third elastic member 64 to deform. The third elastic member 64 is located in the guide groove 16. One end of the third elastic member 64 abuts against the seventh inner wall 20 of the main body 1, and the other end abuts against the connecting portion 153. The seventh inner wall 20 is opposite to the opening of the main body 1.
[0066] Furthermore, the seventh inner wall 20 is provided with a connecting post 65, and the third elastic member 64 is sleeved on the connecting post 65 to prevent the third elastic member 64 from losing contact with the seventh inner wall 20.
[0067] This application also provides a screw removal and installation tool, including a screw removal and installation tool body and a screw clamping device.
[0068] This application embodiment also provides a screw removal and installation tool, including a screw removal and installation tool body and the screw clamping device; the screw clamping device is detachably connected to the screw removal and installation tool body 21, and the screw removal and installation tool body 21 includes a storage compartment 22, which stores the removed screw clamping device.
[0069] In one possible implementation, the storage compartment 22 is located on the handle 23 of the screw removal tool body 21.
[0070] It should be noted that screw removal and installation tools can be manual tools or power tools.
[0071] Other embodiments of this application will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of this application that follow the general principles of this application and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this application are indicated by the following claims.
[0072] It should be understood that this application is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this application is limited only by the appended claims.
Claims
1. A screw clamping device, characterized in that, The screw clamping device includes: The main body (1) has a mounting cavity and an opening communicating with the mounting cavity; The clamping mechanism (2) includes a first clamping arm (3) and a second clamping arm (4), which are hinged to each other and installed in the main body (1). The clamping mechanism (2) has a clamping position for clamping screws and a releasing position for releasing screws. The clamping mechanism (2) is configured to move between the clamping position and the releasing position. A guide structure (5) is disposed within the main body (1). The guide structure (5) is configured to guide the first clamping arm (3) and the second clamping arm (4). When the clamping mechanism (2) moves from the clamping position to the release position, the guide structure (5) forces the first clamping arm (3) and the second clamping arm (4) to open.
2. The screw clamping device according to claim 1, characterized in that, The screw clamping device further includes a clamping reset mechanism (6), which is disposed within the main body (1). The clamping reset mechanism (6) causes the clamping mechanism (2) to reset from the release position to the clamping position.
3. The screw clamping device according to claim 2, characterized in that, The main body (1) is provided with a waist-shaped hole (17), and the long axis of the waist-shaped hole (17) is in the same direction as the movement direction of the clamping mechanism (2); The first clamping arm (3) and the second clamping arm (4) are hinged by a hinge shaft (10), which is movably installed in the waist-shaped hole (17).
4. The screw clamping device according to any one of claims 1-3, characterized in that, The first clamping arm (3) and the second clamping arm (4) both include a first inclined portion (7), and the two first inclined portions (7) are connected by a hinge shaft (10). One end of a portion of the first inclined portion (7) extending out of the mounting cavity is provided with a first clamping portion (8) with a clamping screw.
5. The screw clamping device according to claim 4, characterized in that, The first inclined part (7) is also provided with a first contact part (9) at the end away from the first clamping part (8).
6. The screw clamping device according to claim 5, characterized in that, The guide structure (5) includes a first guide surface (51) and a second guide surface (52), the first guide surface (51) and the second guide surface (52) being opposite to each other; The first clamping arm (3) and the second clamping arm (4) are disposed between the first guide surface (51) and the second guide surface (52). The first clamping arm (3) moves along the first guide surface (51), and the second clamping arm (4) moves along the second guide surface (52). The first guide surface (51) and the second guide surface (52) cooperate to force the first clamping arm (3) and the second clamping arm (4) to open.
7. The screw clamping device according to claim 6, characterized in that, The first guide surface (51) is the first inner wall of the mounting cavity, and / or the second guide surface (52) is the second inner wall of the mounting cavity, with the first inner wall and the second inner wall being opposite sides.
8. The screw clamping device according to claim 7, characterized in that, The first guide surface (51) includes a second section surface (512), and the second guide surface (52) includes a fourth section surface (522); When the first clamping arm (3) and the second clamping arm (4) move from the clamping position to the release position, the two first abutting parts (9) slide along the second section surface (512) and the fourth section surface (522) respectively, and the second section surface (512) and the fourth section surface (522) force the first clamping arm (3) and the second clamping arm (4) to open.
9. The screw clamping device according to claim 8, characterized in that, The first guide surface (51) further includes a first segment surface (511), the first segment surface (511) and the second segment surface (512) are arranged adjacent to each other along a boundary line L, and at at least one point on the boundary line L, the included angle between the tangent plane of the first segment surface (511) and the tangent plane of the second segment surface (512) is an obtuse angle α. The second guide surface (52) further includes a third section surface (521), the third section surface (521) and the fourth section surface (522) are arranged adjacent to each other along a boundary line L, and at at least one point on the boundary line L, the included angle between the tangent plane of the third section surface (521) and the tangent plane of the fourth section surface (522) is an obtuse angle α.
10. The screw clamping device according to claim 9, characterized in that, The first segment (511) and the second segment (512) are both planes, and the dihedral angle between them is an obtuse angle α; The third segment (521) and the fourth segment (522) are both planes, and the dihedral angle between them is an obtuse angle α.
11. The screw clamping device according to claim 9, characterized in that, An arc-shaped transition surface is provided between the first segment (511) and the second segment (512), as well as between the third segment (521) and the fourth segment (522).
12. The screw clamping device according to claim 8, characterized in that, A connecting surface (53) is also provided between the first guide surface (51) and the second guide surface (52).
13. The screw clamping device according to claim 12, characterized in that, The connecting surface (53) is the seventh inner wall of the mounting cavity, and the seventh inner wall is opposite to the opening of the main body (1).
14. The screw clamping device according to claim 3, characterized in that, The clamping and resetting mechanism (6) includes a torsion spring (61), the spring coil of the torsion spring (61) is sleeved on the hinge shaft (10), and the two torsion arms of the torsion spring (61) abut against the first clamping arm (3) and the second clamping arm (4) respectively.
15. The screw clamping device according to claim 14, characterized in that, The clamping and resetting mechanism (6) further includes a second elastic element (62), which is disposed between the hinge shaft (10) and the seventh inner wall (20).
16. The screw clamping device according to claim 3, characterized in that, The first clamping arm (3) and the second clamping arm (4) each include a middle part (11). The middle part (11) has a third inclined part (12) at one end facing the opening direction of the main body (1) and a fourth inclined part (13) at one end away from the third inclined part (12). A second clamping part (14) is provided at one end of the third inclined part (12) that extends out of the mounting cavity. The two fourth inclined parts (13) are connected by a hinge shaft (10). The hinge shaft (10) is located inside the waist-shaped hole (17) and can reciprocate along the long axis of the waist-shaped hole (17).
17. The screw clamping device according to claim 1, characterized in that, The guide structure (5) includes a first guide post (56) and a second guide post (57). The first guide post (56) and the second guide post (57) are respectively connected to the third side wall (58) of the mounting cavity. The first guide post (56) and the second guide post (57) are located between the first clamping arm (3) and the second clamping arm (4). When the clamping mechanism (2) moves from the clamping position to the release position, the first clamping arm (3) and the second clamping arm (4) move along the side walls of the first guide post (56) and the second guide post (57) respectively, forcing the first clamping arm (3) and the second clamping arm (4) to open.
18. The screw clamping device according to claim 17, characterized in that, The first guide post (56) and the second guide post (57) are also connected to the fourth side wall (59) of the mounting cavity, respectively. The fourth side wall (59) and the third side wall (58) are opposite sides.
19. The screw clamping device according to claim 2, characterized in that, The clamping and resetting mechanism (6) includes a third elastic element (64), which is located between the seventh inner wall (20) and the hinge shaft (10).
20. The screw clamping device according to claim 19, characterized in that, A guide (15) is also provided between the third elastic member (64) and the clamping mechanism (2). The guide (15) includes a first guide portion (151) and a second guide portion (152). A connecting portion (153) is provided between the first guide portion (151) and the second guide portion (152). The main body (1) is provided with a guide groove (16), which includes a fifth inner wall (18) and a sixth inner wall (19). When the first clamping arm (3) and the second clamping arm (4) move from the clamping position to the release position, the first guide part (151) and the second guide part (152) move along the fifth inner wall (18) and the sixth inner wall (19) respectively and compress the third elastic element (64) to deform. The third elastic element (64) is located in the guide groove (16). One end of the third elastic element (64) abuts against the seventh inner wall (20) of the main body (1), and the other end abuts against the connecting part (153). The seventh inner wall (20) is opposite to the opening of the main body (1).
21. A screw removal and installation tool, characterized in that, It includes a screw removal and installation tool body and a screw clamping device as described in any one of claims 1-20.
22. A screw removal and installation tool, characterized in that, Includes a screw removal and installation tool body and a screw clamping device as described in any one of claims 1-20; The screw clamping device is detachably connected to the screw removal and assembly tool body (21). The screw removal and assembly tool body (21) includes a storage compartment (22) for storing the removed screw clamping device.
23. The screw removal and assembly tool according to claim 22, characterized in that, The storage compartment (22) is located on the handle (23) of the screw removal tool body (21).