Metal expansion anchor with anti-slip structure

Abstract

The utility model relates to metal expansion nail technical field especially, more particularly to a metal expansion nail containing antiskid structure. The metal expansion nail containing antiskid structure includes the threaded cylinder, the bottom fixed embedding of threaded cylinder has the nail body, and the threaded connection screw rod is inserted in threaded cylinder, the periphery of threaded cylinder is provided with the adjustable arc plate of many pieces, and the outer plate surface of arc plate all fixed embedding has the sawtooth part. The metal expansion nail containing antiskid structure provided by the utility model rotates through screwdriver drive rod cap, and thus screw rod travels along threaded cylinder, therefore, the drive rotation board cooperation middle link board expands the arc plate outward, so that the arc plate can further abut with the borehole inner wall, and simultaneously drive the sawtooth part to be inserted into the borehole inner wall, and the sawtooth part can be effectively embedded in the borehole inner wall in the expansion process, provides very high mechanical bite and friction resistance, significantly resists the sliding and rotation caused by vibration and lateral force, improves the anchoring reliability, and is especially suitable for smooth base material.

Description

Technical Field

[0001] This utility model relates to the field of metal expansion nail technology, and in particular to a metal expansion nail with an anti-slip structure. Background Technology

[0002] Metal expansion bolts, as a commonly used fastening connector, are widely used in construction, interior decoration, equipment installation, and other fields. They are fixed to objects by inserting the component into a pre-drilled hole and utilizing the friction generated between the expansion structure and the inner wall of the hole. Existing metal expansion bolts typically consist of a bolt body, a sleeve, and a screw, relying on the sleeve expanding under pressure to fit against the inner wall of the hole to achieve fixation.

[0003] However, existing expansion nails have obvious technical defects: First, the sleeve surface is mostly smooth or has only simple embossed texture, which has limited anti-slip performance. When subjected to vibration, external impact, or when the drilled hole size is slightly larger than the expansion nail specification, it is easy to loosen or slip, resulting in a decrease in fixing reliability. Second, in softer walls (such as gypsum board and aerated concrete), traditional expansion nails have insufficient friction and cannot withstand large loads, making them prone to falling off.

[0004] Therefore, it is necessary to provide a new type of metal expansion nail with an anti-slip structure to solve the above-mentioned technical problems. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides a metal expansion nail with an anti-slip structure.

[0006] The metal expansion nail with anti-slip structure provided by this utility model includes a threaded cylinder, the bottom of which is fixedly fitted with a nail body, and a threaded screw is inserted inside the threaded cylinder.

[0007] The outer periphery of the threaded cylinder is provided with multiple adjustable arc-shaped plates, and the outer surface of each arc-shaped plate is fixedly fitted with multiple evenly distributed serrated parts.

[0008] Preferably, multiple annularly distributed and rotatably connected connecting plates are installed on the cylinder wall near the nail body of the threaded cylinder, and the other end of the connecting plate is rotatably connected to the inner wall of the arc-shaped plate.

[0009] Preferably, a rotating ring is fitted onto the screw and is rotatably connected, and multiple annularly distributed and rotatably connected drive plates are installed on the rotating ring, with the other end of the drive plate rotatably connected to the inner wall of the arc-shaped plate.

[0010] Preferably, a rod cap is fixedly fitted to the top of the screw, and a cross groove is formed on the rod cap.

[0011] Preferably, a rubber ring is fixedly fitted at the opening of the threaded cylinder.

[0012] Preferably, the bottom of the nail body is provided with a pointed blade.

[0013] Compared with related technologies, the metal expansion nail with anti-slip structure provided by this utility model has the following advantages:

[0014] Beneficial effects:

[0015] 1. This utility model uses a screwdriver to drive the rod cap to rotate, so that the screw travels along the threaded cylinder. Therefore, the drive plate, together with the connecting plate, expands the arc plate outward, allowing the arc plate to further abut against the inner wall of the drill hole. At the same time, it drives the serrated part to insert into the inner wall of the drill hole. During the expansion process, the serrated part can effectively embed into the inner wall of the drill hole, providing extremely high mechanical biting force and frictional resistance, significantly resisting the sliding and rotation caused by vibration and lateral force, improving the anchoring reliability, and is especially suitable for smooth substrates.

[0016] 2. This utility model uses the rotation of a screw to drive the rotating ring to move, so that the drive plate, together with the connecting plate, drives the arc plate to expand outward. The expansion range of the arc plate can be flexibly adjusted according to the drilling size and the hardness of the wall, ensuring a tight fit with the inner wall of the drilling hole. This solves the problems of non-adjustable fixing strength and poor adaptability in the prior art. Attached Figure Description

[0017] Figure 1 One of the structural schematic diagrams of a preferred embodiment of the metal expansion nail with anti-slip structure provided by this utility model;

[0018] Figure 2 A second structural schematic diagram of a preferred embodiment of the metal expansion nail with anti-slip structure provided by this utility model;

[0019] Figure 3 for Figure 1 The diagram shows a cross-sectional view of the structure.

[0020] The following are the labels in the diagram: 1. Threaded cylinder; 11. Nail body; 2. Screw; 21. Rotating ring; 3. Arc plate; 31. Serrated part; 4. Connecting plate; 5. Driving plate; 6. Rod cap. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0022] The specific implementation of this utility model will be described in detail below with reference to specific embodiments.

[0023] Please see Figures 1 to 3This utility model provides a metal expansion nail with an anti-slip structure, which includes a threaded cylinder 1, a screw 2, and an arc-shaped plate 3.

[0024] In the embodiments of this utility model, please refer to Figures 1 to 3 The bottom of the threaded cylinder 1 is fixedly fitted with a nail body 11, and the bottom of the nail body 11 is provided with a sharp edge. A threaded screw 2 is inserted into the threaded cylinder 1. Multiple adjustable arc-shaped plates 3 are provided around the threaded cylinder 1. Multiple evenly distributed serrated parts 31 are fixedly fitted on the outer surface of each arc-shaped plate 3. Multiple annularly distributed and rotatably connected connecting plates 4 are installed on the cylinder wall of the threaded cylinder 1 near the nail body 11. The other end of the connecting plate 4 is rotatably connected to the inner wall of the arc-shaped plate 3. A rotatably connected rotating ring 21 is fitted on the screw 2. Multiple annularly distributed and rotatably connected driving plates 5 are installed on the rotating ring 21. The other end of the driving plate 5 is rotatably connected to the inner wall of the arc-shaped plate 3. A rod cap 6 is fixedly fitted on the top of the screw 2. A cross groove is opened on the rod cap 6.

[0025] It should be noted that: the threaded cylinder 1 and the arc-shaped plate 3 are inserted into the drilled hole through the nail body 11 at the bottom. Since the arc-shaped plate 3 has a serrated part 31 on the outside, the friction between the metal expansion nail and the drill hole is increased, and the sliding range of the metal expansion nail is reduced. Then, the screwdriver drives the rod cap 6 to rotate, so that the screw 2 moves along the threaded cylinder 1. Therefore, the drive plate 5, together with the connecting plate 4, expands the arc-shaped plate 3 outward, so that the arc-shaped plate 3 can further abut against the inner wall of the drill hole. At the same time, the serrated part 31 is driven to be inserted into the inner wall of the drill hole. During the expansion process, the serrated part 31 can effectively embed into the inner wall of the drill hole, providing extremely high mechanical biting force and frictional resistance, significantly resisting the sliding and rotation caused by vibration and lateral force, improving the anchoring reliability, and is especially suitable for smooth substrates.

[0026] Furthermore, by rotating the screw 2, the rotating ring 21 moves, causing the drive plate 5 to cooperate with the connecting plate 4 to drive the arc plate 3 to expand outward. The expansion range of the arc plate 3 can be flexibly adjusted according to the drilling size and the wall hardness, ensuring a tight fit with the inner wall of the drilling hole. This solves the problems of non-adjustable fixing strength and poor adaptability in the existing technology.

[0027] Furthermore, a rubber ring is fixedly fitted at the opening of the threaded cylinder 1. The rubber ring can prevent the rod cap 6 from excessively rotating downwards and causing a hard impact on the opening of the threaded cylinder 1.

[0028] The working principle of the metal expansion nail with anti-slip structure provided by this utility model is as follows:

[0029] The threaded cylinder 1 and the arc-shaped plate 3 are inserted into the drilled hole through the nail body 11 at the bottom. Because the arc-shaped plate 3 has serrated edges 31 on its exterior, the friction between the metal expansion nail and the drill hole is increased, reducing the sliding range of the metal expansion nail. Then, the screwdriver drives the rod cap 6 to rotate, causing the screw 2 to move along the threaded cylinder 1. Therefore, the drive plate 5, in conjunction with the connecting plate 4, expands the arc-shaped plate 3 outwards, allowing the arc-shaped plate 3 to further abut against the inner wall of the drill hole. Simultaneously, the serrated edges 31 are driven to insert into the inner wall of the drill hole. During the expansion process, 31 can effectively embed into the inner wall of the borehole, providing extremely high mechanical interlocking force and frictional resistance, significantly resisting sliding and rotation caused by vibration and lateral force, improving anchoring reliability, and is especially suitable for smooth substrates. The rotation of screw 2 drives the rotating ring 21 to move, so that the drive plate 5 cooperates with the connecting plate 4 to drive the arc plate 3 to expand outward. The expansion range of the arc plate 3 can be flexibly adjusted according to the borehole size and wall hardness to ensure tight fit with the inner wall of the borehole, solving the problems of non-adjustable fixing strength and poor adaptability in the prior art.

[0030] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A metal expansion nail with an anti-slip structure, characterized in that, Includes a threaded cylinder (1), the bottom of which is fixedly fitted with a nail body (11), and a threaded screw (2) is inserted inside the threaded cylinder (1); The outer periphery of the threaded cylinder (1) is provided with multiple adjustable arc-shaped plates (3), and the outer surface of each arc-shaped plate (3) is fixedly fitted with multiple evenly distributed serrated parts (31).

2. The metal expansion nail with anti-slip structure according to claim 1, characterized in that, The threaded cylinder (1) has multiple annularly distributed and rotatably connected connecting plates (4) installed on the cylinder wall near the nail body (11), and the other end of the connecting plate (4) is rotatably connected to the inner wall of the arc plate (3).

3. The metal expansion nail with anti-slip structure according to claim 2, characterized in that, The screw (2) is fitted with a rotating ring (21) that is rotatably connected, and multiple annularly distributed and rotatably connected drive plates (5) are installed on the rotating ring (21). The other end of the drive plate (5) is rotatably connected to the inner wall of the arc plate (3).

4. The metal expansion nail with anti-slip structure according to claim 3, characterized in that, The top of the screw (2) is fixedly fitted with a rod cap (6), and the rod cap (6) has a cross groove.

5. The metal expansion nail with anti-slip structure according to claim 1, characterized in that, A rubber ring is fixedly fitted at the opening of the threaded cylinder (1).

6. The metal expansion nail with anti-slip structure according to claim 1, characterized in that, The bottom of the nail body (11) is provided with a sharp blade.

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