Drywall nail having an expanded structure

Abstract

The utility model relates to dry wall nail technical field especially relates to a dry wall nail with expansion structure. The dry wall nail with expansion structure includes threaded nail body, the top of threaded nail body is provided with the light pole section of hollow structure, and the light pole section is fixedly embedded with the nail cap, the light pole section is equipped with side cavity, and the light pole section is installed with expansion component and screw rod. The dry wall nail with expansion structure provided by the utility model is driven to rotate by the through cavity of the nail cap through the flat screwdriver, and the screw rod is rotated, and the expansion component is driven to realize active expansion through the screw rod, and the convex curved plate is stretched out from the side cavity of the light pole section, and forms mechanical clamping with the base material, compared with the traditional fixing mode only relying on friction, the connection strength of the dry wall nail and the base material is greatly improved, the loosening problem caused by vibration, base material aging etc. is effectively avoided, and the long-term stability of the mounting structure is ensured.

Description

Technical Field

[0001] This utility model relates to the field of drywall screw technology, and in particular to a drywall screw with an expansion structure. Background Technology

[0002] Drywall screws are commonly used fasteners in building decoration and furniture installation, primarily for fixing boards, decorative parts, and other components to substrates such as gypsum board and lightweight partitions. Current drywall screw technology typically relies solely on the friction between the threaded screw body and the substrate for fixation. However, substrates such as gypsum board and lightweight partitions are inherently porous and have low density, resulting in limited engagement force between the threads and the substrate. Over long-term use, factors such as vibration, temperature changes, and substrate aging can cause drywall screws to loosen and shift, potentially leading to the detachment of the fixed boards and compromising the stability and safety of the installation structure.

[0003] Therefore, it is necessary to provide a new drywall screw with an expansion structure to solve the above-mentioned technical problems. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides a drywall nail with an expansion structure.

[0005] The drywall nail with an expansion structure provided by this utility model includes a threaded nail body, the top of which is provided with a hollow smooth rod section, and a nail head is fixedly fitted on the smooth rod section;

[0006] The optical rod section has multiple annularly distributed and axially arranged side cavities, and an expansion component and a lead screw for driving the expansion component to expand are installed inside the optical rod section.

[0007] The lead screw is rotatably installed in the inner cavity of the smooth rod section, and a rotating column is fixedly fitted at the top of the lead screw. The rotating column extends into the mounting cavity opened in the nail head and is rotatably connected to the mounting cavity.

[0008] The expansion component includes a threaded sleeve and a retaining ring. The threaded sleeve is fitted onto the lead screw and threadedly connected to the lead screw. The retaining ring is installed in an annular groove on the lead screw and rotatably connected to the annular groove. Multiple annularly distributed convex curved plates are fixedly mounted between the threaded sleeve and the retaining ring. The convex curved plates correspond to the side cavities.

[0009] Preferably, the outer ring wall of the threaded sleeve is fixedly fitted with a plurality of annularly distributed limiting protrusions, and the inner cavity wall of the smooth rod section is provided with a plurality of annularly distributed and axially arranged limiting grooves. The limiting protrusions on the threaded sleeve are respectively inserted into the limiting grooves and slidably connected to the limiting grooves.

[0010] Preferably, the lead screw and the rotating column are fixedly connected by a connecting rod, the rotating column is sleeved on the connecting rod and rotatably connected to the connecting rod, and the rotating column is provided with a flat groove.

[0011] Preferably, a rotating head is fixedly installed at the bottom of the lead screw, and the rotating head is inserted into the rotating cavity opened in the smooth rod section and rotatably connected to the rotating cavity.

[0012] Preferably, the nail head above the mounting cavity has a through cavity coaxially arranged with the mounting cavity, and the diameter of the through cavity is smaller than the diameter of the mounting cavity.

[0013] Preferably, the nail head has a cross groove, and the through cavity extends through the top of the nail head.

[0014] Compared with related technologies, the drywall nail with an expansion structure provided by this utility model has the following beneficial effects:

[0015] This invention uses a Phillips screwdriver to screw the threaded nail body into the substrate, and then uses a flathead screwdriver to drive the rotating column through the through cavity of the nail head, which in turn drives the lead screw to rotate. The lead screw drives the expansion component to achieve active expansion. After the convex curved plate extends from the side cavity of the smooth rod section, it forms a mechanical engagement with the substrate. Compared with the traditional fixing method that relies solely on friction, this significantly improves the connection strength between the drywall nail and the substrate, effectively avoiding loosening problems caused by vibration and substrate aging, ensuring the long-term stability of the installation structure. Moreover, fixing and expansion to prevent loosening can be completed in just two steps, simplifying the installation process and improving construction efficiency. Attached Figure Description

[0016] Figure 1 A schematic diagram of a preferred embodiment of the drywall nail with an expansion structure provided by this utility model;

[0017] Figure 2 for Figure 1 The diagram shows the exploded structure.

[0018] Figure 3 for Figure 1 The diagram shows the installation structure of the lead screw and expansion components when viewed in section of the threaded nail body.

[0019] Figure 4 for Figure 3 A cross-sectional view of the threaded nail body shown.

[0020] Figure 5 for Figure 3 The diagram shows the connection structure between the lead screw and the expansion component.

[0021] The following are the labels in the diagram: 1. Threaded nail body; 11. Smooth rod section; 11a. Side cavity; 11b. Annular groove; 11c. Rotating cavity; 11d. Limiting slide groove; 12. Nail head; 12a. Cross groove; 12b. Through cavity; 12c. Mounting cavity; 2. Lead screw; 21. Rotating head; 22. Rotating column; 22a. Flat groove; 3. Expansion component; 31. Threaded sleeve; 311. Limiting protrusion; 32. Abutment ring; 33. Outwardly convex curved plate. Detailed Implementation

[0022] 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.

[0023] The specific implementation of this utility model will be described in detail below with reference to specific embodiments.

[0024] Please see Figures 1 to 5 The present invention provides a drywall nail with an expansion structure, wherein the drywall nail with an expansion structure includes a threaded nail body 1, a lead screw 2, and an expansion component 3.

[0025] In the embodiments of this utility model, please refer to Figure 1 and Figure 2 The top of the threaded nail body 1 is provided with a hollow smooth rod section 11, and a nail head 12 is fixedly fitted on the smooth rod section 11. A cross groove 12a is provided on the nail head 12, and multiple annularly distributed and axially arranged side cavities 11a are provided on the smooth rod section 11. An expansion component 3 and a lead screw 2 for driving the expansion component 3 to expand are installed inside the smooth rod section 11.

[0026] It should be noted that when a Phillips screwdriver is inserted into the Phillips groove 12a on the nail head 12, the threaded nail body 1 and the smooth rod section 11 can be screwed into the installation area. Then, by rotating the screw rod 2, the expansion component 3 is expanded, thereby achieving the anti-loosening effect of the drywall screw.

[0027] In the embodiments of this utility model, please refer to Figure 2 , Figure 3 and Figure 4The lead screw 2 is rotatably installed in the inner cavity of the smooth rod section 11, and a rotating column 22 is fixedly fitted at the top of the lead screw 2. The rotating column 22 extends into the mounting cavity 12c opened in the nail head 12 and is rotatably connected to the mounting cavity 12c. The lead screw 2 and the rotating column 22 are fixedly connected by a connecting rod. The rotating column 22 is sleeved on the connecting rod and is rotatably connected to the connecting rod. A flat groove 22a is opened on the rotating column 22. A rotating head 21 is fixedly installed at the bottom of the lead screw 2. The rotating head 21 is inserted into the rotating cavity 11c opened in the smooth rod section 11 and is rotatably connected to the rotating cavity 11c. The nail head 12 above the mounting cavity 12c has a through cavity 12b that is coaxially arranged with the mounting cavity 12c. The through cavity 12b penetrates the top of the nail head 12, and the diameter of the through cavity 12b is smaller than the diameter of the mounting cavity 12c.

[0028] It should be noted that the lead screw 2 is rotatably installed in the smooth rod section 11 via the rotating head 21 and the rotating column 22. Since the diameter of the through cavity 12b is smaller than the diameter of the mounting cavity 12c, the lead screw 2 can only rotate in the smooth rod section 11 and will not slip out of the smooth rod section 11. The lead screw 2 can be driven to rotate by inserting a flathead screwdriver through the through cavity 12b of the screw head 12 into the flat slot 22a of the rotating column 22.

[0029] In the embodiments of this utility model, please refer to Figure 2 , Figure 4 and Figure 5 The expansion component 3 includes a threaded sleeve 31 and an abutment ring 32. The threaded sleeve 31 is sleeved on the lead screw 2 and threadedly connected to the lead screw 2. The abutment ring 32 is installed in the annular groove 11b opened in the lead screw 2 and rotatably connected to the annular groove 11b. Multiple annularly distributed convex curved plates 33 are fixedly mounted between the threaded sleeve 31 and the abutment ring 32. The convex curved plates 33 correspond to the side cavity 11a.

[0030] The outer ring wall of the threaded sleeve 31 is fixedly fitted with multiple annularly distributed limiting protrusions 311, and the inner wall of the smooth rod section 11 is provided with multiple annularly distributed and axially arranged limiting grooves 11d. The limiting protrusions 311 on the threaded sleeve 31 are respectively inserted into the limiting grooves 11d and slidably connected to the limiting grooves 11d.

[0031] It should be noted that: because the threaded sleeve 31 is restricted by the limiting protrusion 311, when the lead screw 2 rotates, the threaded sleeve 31 can slide up along the lead screw 2. At this time, the outward convex curved plate 33 is squeezed by the threaded sleeve 31, and the outward convex curved plate 33 itself is a curved plate structure that convexes outward. Therefore, the outward convex curved plate 33 can be bent and extend out from the side cavity 11a, thereby avoiding the hidden danger of the drywall screw reversing and loosening.

[0032] Therefore, this application uses a Phillips screwdriver to screw the threaded nail body 1 into the substrate, and then uses a flathead screwdriver to drive the rotating column 22 to rotate through the cavity 12b of the nail head 12, which in turn drives the screw rod 2 to rotate. The screw rod 2 drives the expansion component 3 to achieve active expansion. After the convex curved plate 33 extends from the side cavity 11a of the smooth rod section 11, it forms a mechanical engagement with the substrate. Compared with the traditional fixing method that relies solely on friction, this significantly improves the connection strength between the drywall nail and the substrate, effectively avoids loosening problems caused by vibration and substrate aging, ensures the long-term stability of the installation structure, and only requires two steps to complete the fixing and expansion to prevent loosening, simplifying the installation process and improving construction efficiency.

[0033] In addition, the convex curved plate 33 is made of corrosion-resistant and high-strength materials such as stainless steel and high-strength alloys to improve its rust resistance and structural strength. At the same time, without changing the overall structure of the convex curved plate 33, its surface is treated with anti-corrosion treatments such as galvanizing and chrome plating to further enhance its corrosion resistance. The key stress-bearing parts of the convex curved plate 33 can be reinforced with additional ribs as needed to optimize the stress structure of the convex curved plate 33 and prevent deformation or breakage during high-intensity operations.

[0034] 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 drywall screw with an expansion structure, comprising a threaded screw body (1), wherein a hollow smooth rod section (11) is provided at the top of the threaded screw body (1), and a screw head (12) is fixedly fitted onto the smooth rod section (11), characterized in that: The optical rod section (11) has multiple annularly distributed and axially arranged side cavities (11a), and an expansion component (3) and a lead screw (2) for driving the expansion component (3) to expand are installed inside the optical rod section (11). The lead screw (2) is rotatably installed in the inner cavity of the smooth rod section (11), and a rotating column (22) is fixedly fitted on the top of the lead screw (2). The rotating column (22) extends into the mounting cavity (12c) opened by the nail head (12) and is rotatably connected to the mounting cavity (12c). The expansion component (3) includes a threaded sleeve (31) and an abutment ring (32). The threaded sleeve (31) is sleeved on the lead screw (2) and threadedly connected to the lead screw (2). The abutment ring (32) is installed in the annular groove (11b) opened in the lead screw (2) and rotatably connected to the annular groove (11b). Multiple annularly distributed convex curved plates (33) are fixedly mounted between the threaded sleeve (31) and the abutment ring (32). The convex curved plates (33) correspond to the side cavity (11a).

2. The drywall screw with an expansion structure according to claim 1, characterized in that, The outer ring wall of the threaded sleeve (31) is fixedly fitted with a plurality of annularly distributed limiting protrusions (311), and the inner wall of the smooth rod section (11) is provided with a plurality of annularly distributed and axially arranged limiting grooves (11d). The limiting protrusions (311) on the threaded sleeve (31) are respectively inserted into the limiting grooves (11d) and slidably connected to the limiting grooves (11d).

3. The drywall screw with an expansion structure according to claim 1, characterized in that, The lead screw (2) and the rotating column (22) are fixedly connected by a connecting rod. The rotating column (22) is sleeved on the connecting rod and rotatably connected to the connecting rod. A flat groove (22a) is provided on the rotating column (22).

4. The drywall screw with an expansion structure according to claim 3, characterized in that, A rotating head (21) is fixedly installed at the bottom of the lead screw (2), and the rotating head (21) is inserted into the rotating cavity (11c) opened in the smooth rod section (11) and rotatably connected to the rotating cavity (11c).

5. The drywall screw with an expansion structure according to claim 1, characterized in that, The nail cap (12) above the mounting cavity (12c) has a through cavity (12b) coaxially arranged with the mounting cavity (12c), and the diameter of the through cavity (12b) is smaller than the diameter of the mounting cavity (12c).

6. The drywall screw with an expansion structure according to claim 5, characterized in that, The nail head (12) has a cross groove (12a) and the through cavity (12b) penetrates the top of the nail head (12).

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