A fastening mechanism for metal fasteners

Abstract

This utility model relates to the field of metal fasteners and discloses a fastening mechanism for metal fasteners, including two clamping arc plates disposed between two fixed outer frames. Each of the two fixed outer frames has a first threaded hole on its two mutually distant sides. A lifting screw is threaded into the internal of each first threaded hole. A fixing ring is fixed to the top surface of each clamping arc plate, and a bearing is disposed inside the fixing ring. One end of the lifting screw passes through the first threaded hole and is fixedly sleeved with the inner ring of the bearing inside the fixing ring. A turntable is fixed to the other end of the lifting screw, and several anti-slip hemispheres are fixed to the surface of the turntable. In this utility model, the clamping arc plates and the lifting screw are connected by a fixing ring and a bearing, ensuring that the clamping arc plates move vertically when adjusting the distance between the two clamping arc plates, thus avoiding interference with the clamping of the metal rod by the clamping arc plates.

Description

Technical Field

[0001] This utility model relates to the technical field of metal fasteners, specifically to a fastening mechanism for metal fasteners. Background Technology

[0002] Metal fasteners are a type of mechanical part used to connect, fix, or fasten various materials and components, and are usually made of metal. They come in various shapes and sizes, including bolts, nuts, screws, washers, and pins, and are widely used in construction, manufacturing, automotive, aerospace, and other fields. The main function of metal fasteners is to ensure the stability and safety of structures, while also facilitating disassembly and maintenance.

[0003] According to Chinese Patent No. CN221973990U, an adjustable-width metal fastener includes an arc-shaped fastener, a sliding plate, a limiting rod, a second threaded rod, and a split arc-shaped fastener. The outer ends of the symmetrical limiting rods are fixedly connected to the inner walls of the left and right sides of the semi-frame. The sliding plate is a plate with a sliding groove on its surface. The sliding plate is slidably connected to the inner end of the limiting rod. The arc-shaped fastener is fixedly connected between the symmetrical sliding plates. The front and rear sides of the arc-shaped fastener are respectively provided with left and right symmetrical threaded grooves. The second threaded rod is threadedly connected to the threaded groove on the surface of the arc-shaped fastener. The split arc-shaped fasteners are fixedly connected to the outer ends of the second threaded rods on the front and rear sides of the arc-shaped fastener.

[0004] The above solution still has the following drawbacks: the first threaded rod, the force equalizing plate, and the arc-shaped fastener are fixed together on the same axis. When the first threaded rod rotates, it will drive the arc-shaped fastener to rotate synchronously. The rotating arc-shaped fastener will interfere with the clamping and fixing of the metal rod, increasing the difficulty of installation. Utility Model Content

[0005] The purpose of this invention is to provide a fastening mechanism for metal fasteners, in order to solve the problem that when the first threaded rod rotates, it will cause the arc-shaped fastener to rotate synchronously, and the rotating arc-shaped fastener will interfere with the clamping and fixing of the metal rod, increasing the difficulty of installation.

[0006] To achieve the above-mentioned utility model objectives, the present utility model adopts the following technical solution: a fastening mechanism for metal fasteners, comprising two clamping arc plates, the two clamping arc plates being disposed between two fixed outer frames, each of the two fixed outer frames having a first threaded hole on its two mutually distant sides, a lifting screw being threadedly connected to the inside of the first threaded hole, a fixing ring being fixed to the top surface of the clamping arc plate, a bearing being disposed inside the fixing ring, one end of the lifting screw passing through the first threaded hole and being fixedly sleeved with the inner ring of the bearing inside the fixing ring, and a turntable being fixed to the other end of the lifting screw, the surface of the turntable being fixed with a plurality of anti-slip hemispheres.

[0007] Preferably, a lifting plate is fixed to the surface of the clamping arc plate, and sliding openings are provided on both sides of the fixed outer frame, with the lifting plate slidingly engaging with the sliding openings.

[0008] Preferably, both sides of the two clamping arc plates are provided with an extension arc plate, and both sides of the clamping arc plate are provided with a rotating groove. An extension screw is rotatably arranged inside the rotating groove, and a bearing is arranged inside the rotating groove. One end of the extension screw extends into the interior of the rotating groove and is fixedly sleeved with the inner ring of the bearing. A second threaded hole is provided on one side of the extension arc plate, and the extension screw is threadedly connected to the second threaded hole.

[0009] Preferably, positioning rods are fixed on both sides of the two clamping arc plates, and two positioning holes are opened on one side of the extended arc plate, with the positioning rods slidably inserted into the positioning holes.

[0010] Preferably, two fixing holes are provided on each of the two fixed outer frames that are close to each other. An installation bolt is inserted into the fixing hole, and the bottom end of the installation bolt passes through the fixing hole and is threaded with a nut.

[0011] Preferably, two compression pads are fixed on both sides of the two fixed outer frames that are close to each other, and anti-slip pads are fixed on the inner wall surfaces of the clamping arc plate and the expanding arc plate.

[0012] Compared with the prior art, the fastening mechanism of a metal fastener that adopts the above technical solution has the following advantages:

[0013] 1. By connecting the clamping arc plate and the lifting screw through a fixed ring and bearing, it is possible to ensure that the clamping arc plate moves vertically when adjusting the distance between the two clamping arc plates, thus avoiding interference with the clamping arc plate's grip on the metal rod;

[0014] Second, workers can use a Phillips screwdriver to rotate the expansion screw inside the second threaded hole. When the expansion screw rotates, it will adjust the distance between the clamping arc plate and the expansion arc plate by using the threaded connection of the second threaded hole. When the expansion arc plate slides laterally, the inner wall of the positioning hole will slide on the surface of the positioning rod, which increases the stability of the expansion arc plate when sliding. By increasing the distance between the clamping arc plate and the expansion arc plate, the stress on the metal rod is distributed and stress concentration is avoided.

[0015] 3. When the two fixed outer frames are assembled together, the mounting bolts will pass through the fixing holes where they are assembled and be locked with nuts. At this time, the two compression pads will be pressed together. When the inner wall of the clamping arc plate and the extension arc plate is pressed against the surface of the metal rod, the anti-slip pad will be pressed against the surface of the metal plate to prevent the clamping arc plate from loosening and sliding after clamping the metal rod. Attached Figure Description

[0016] Figure 1 This is a perspective view of an embodiment.

[0017] Figure 2 This is a breakdown diagram of an embodiment.

[0018] Figure 3 This is a schematic diagram of the clamping arc plate in an embodiment.

[0019] Figure 4 This is a schematic diagram of the extended arc plate in an embodiment.

[0020] In the diagram: 1. Fixed outer frame; 2. Clamping arc plate; 3. First threaded hole; 4. Lifting screw; 5. Fixing ring; 6. Turntable; 7. Anti-slip hemisphere; 8. Lifting plate; 9. Sliding port; 10. Extending arc plate; 11. Rotating groove; 12. Extending screw; 13. Second threaded hole; 14. Positioning rod; 15. Positioning hole; 16. Fixing hole; 17. Mounting bolt; 18. Nut; 19. Extrusion pad; 20. Anti-slip pad. Detailed Implementation

[0021] The preferred embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0022] like Figures 1-3 As shown, a fastening mechanism for a metal fastener includes two clamping arc plates 2, which are disposed between two fixed outer frames 1. First threaded holes 3 are provided on both sides of the two fixed outer frames 1 that are far apart from each other. A lifting screw 4 is threaded into the inner part of each first threaded hole 3. A fixing ring 5 is fixed to the top surface of the clamping arc plate 2, and a bearing is installed inside the fixing ring 5. One end of the lifting screw 4 passes through the first threaded hole 3 and is fixedly sleeved with the inner ring of the bearing inside the fixing ring 5. A turntable 6 is fixed to the other end of the lifting screw 4. Several anti-slip hemispheres 7 are fixed to the surface of the turntable 6. A lifting plate 8 is fixed to the surface of the clamping arc plate 2. Sliding openings 9 are provided on both sides of the fixed outer frame 1, and the lifting plate 8 slides with the sliding openings 9.

[0023] In use, after the two fixed outer frames 1 are fastened to the surface of the metal rod, the operator will apply a rotational force to the lifting screw 4 through the turntable 6. The threaded connection between the first threaded hole 3 and the lifting screw 4 will push the two clamping arc plates 2 to move closer or further apart to accommodate metal rods of different diameters. When the lifting screw 4 rotates, since the lifting screw 4 and the clamping arc plates 2 are fixed together by the fixing ring 5 and the bearing, the clamping arc plates 2 can be prevented from rotating synchronously with the lifting screw 4. When the clamping arc plates 2 slide up and down inside the fixed outer frame 1, it will drive the lifting plate 8 to slide up and down inside the sliding port 9, which will increase the stability of the clamping arc plates 2 when sliding up and down.

[0024] By connecting the clamping arc plate 2 and the lifting screw 4 through the fixing ring 5 and bearing, it is possible to ensure that the clamping arc plate 2 moves vertically when adjusting the distance between the two clamping arc plates 2, thus avoiding interference with the clamping arc plate 2's clamping of the metal rod.

[0025] like Figures 2-4 As shown, each of the two clamping arc plates 2 has an extension arc plate 10 on both sides. Each of the two clamping arc plates 2 has a rotating groove 11. An extension screw 12 is rotatably installed inside the rotating groove 11. A bearing is installed inside the rotating groove 11. One end of the extension screw 12 extends into the rotating groove 11 and is fixedly sleeved with the inner ring of the bearing. A second threaded hole 13 is opened on one side of the extension arc plate 10. The extension screw 12 is threadedly connected to the second threaded hole 13. Positioning rods 14 are fixed on both sides of the two clamping arc plates 2 respectively. Two positioning holes 15 are opened on one side of the extension arc plate 10. The positioning rods 14 are slidably inserted into the positioning holes 15.

[0026] During use, the operator can use a Torx screwdriver to rotate the expansion screw 12 inside the second threaded hole 13. When the expansion screw 12 rotates, it will adjust the distance between the clamping arc plate 2 and the expansion arc plate 10 by using the threaded connection of the second threaded hole 13. When the expansion arc plate 10 slides laterally, the inner wall of the positioning hole 15 will slide on the surface of the positioning rod 14, which increases the stability of the expansion arc plate 10 when sliding. By increasing the distance between the clamping arc plate 2 and the expansion arc plate 10, the stress on the metal rod is distributed, and stress concentration is avoided.

[0027] like Figure 2 As shown, two fixing holes 16 are opened on both sides of the two fixed outer frames 1 that are close to each other. The fixing holes 16 are fitted with mounting bolts 17. The bottom end of the mounting bolts 17 passes through the fixing holes 16 and is threaded with nuts 18. Two compression pads 19 are fixed on both sides of the two fixed outer frames 1 that are close to each other. Anti-slip pads 20 are fixed on the inner wall surfaces of the clamping arc plate 2 and the expansion arc plate 10.

[0028] During use, when the two fixed outer frames 1 are assembled together, the mounting bolts 17 will pass through the fixed holes 16 where they are assembled and be locked with nuts 18. At this time, the two compression pads 19 will be pressed together. When the inner walls of the clamping arc plate 2 and the extension arc plate 10 are pressed against the surface of the metal rod, the anti-slip pad 20 will be pressed against the surface of the metal plate to prevent the clamping arc plate 2 from loosening and sliding after clamping the metal rod.

[0029] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A fastening mechanism for a metal fastener, comprising two clamping arc plates (2), the two clamping arc plates (2) being disposed between two fixed outer frames (1), characterized in that, The two fixed outer frames (1) are provided with first threaded holes (3) on their opposite sides. The first threaded holes (3) are connected to lifting screws (4) by internal threads. The top surface of the clamping arc plate (2) is fixed with a fixing ring (5). The fixing ring (5) is provided with a bearing. One end of the lifting screw (4) passes through the first threaded hole (3) and is fixedly sleeved with the inner ring of the bearing inside the fixing ring (5). The other end of the lifting screw (4) is fixed with a turntable (6). The surface of the turntable (6) is fixed with several anti-slip hemispheres (7).

2. The fastening mechanism for a metal fastener according to claim 1, characterized in that: The surface of the clamping arc plate (2) is fixed with a lifting plate (8), and the two sides of the fixed outer frame (1) are provided with sliding openings (9), and the lifting plate (8) and the sliding openings (9) are slidably engaged.

3. The fastening mechanism for a metal fastener according to claim 1, characterized in that: Both sides of the two clamping arc plates (2) are provided with an extension arc plate (10). Both sides of the clamping arc plate (2) are provided with a rotating groove (11). An extension screw (12) is rotatably arranged inside the rotating groove (11). A bearing is provided inside the rotating groove (11). One end of the extension screw (12) extends into the interior of the rotating groove (11) and is fixedly sleeved with the inner ring of the bearing. A second threaded hole (13) is provided on one side of the extension arc plate (10). The extension screw (12) is threadedly connected to the second threaded hole (13).

4. The fastening mechanism for a metal fastener according to claim 3, characterized in that: Positioning rods (14) are fixed on both sides of the two clamping arc plates (2), and two positioning holes (15) are opened on one side of the extended arc plate (10). The positioning rods (14) are slidably inserted into the positioning holes (15).

5. The fastening mechanism for a metal fastener according to claim 1, characterized in that: Two fixing holes (16) are provided on both sides of the two fixed outer frames (1) that are close to each other. An installation bolt (17) is inserted into the fixing hole (16). The bottom end of the installation bolt (17) passes through the fixing hole (16) and is threaded with a nut (18).

6. The fastening mechanism for a metal fastener according to claim 1, characterized in that: Two compression pads (19) are fixed on both sides of the two fixed outer frames (1) that are close to each other, and anti-slip pads (20) are fixed on the inner wall surfaces of the clamping arc plate (2) and the expanding arc plate (10).

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