Self-tapping screw with high connection stability
By setting the first and second teeth at equal intervals on the self-tapping screw, and opening a groove on the first tooth, the problem of the self-tapping screw being easily pulled out is solved, and a more stable connection effect is achieved.
Patent Information
- Application Number
- CN202520624980.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-03
- Publication Date
- 2026-01-02
- Estimated Expiration
- 2035-04-03
AI Technical Summary
Most existing self-tapping screws have a single-tooth structure, which leads to unstable connections and makes them easy to pull out.
The device uses a first tooth and a second tooth that are set at equal intervals, and a groove is opened on the first tooth. The groove shape is V-shaped, U-shaped or arc-shaped, and the edge of the groove is rounded. The nail body is made of high-strength alloy steel.
It enhances the mechanical engagement between the self-tapping screw and the concrete wall, improves the anchoring force and pull-out force, reduces the driving resistance, enhances the connection stability and tensile strength, avoids the accumulation of impurities, and improves the service life.
Smart Images
Figure CN223754423U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to installation plug -in technical field, concretely relates to a self -tapping screw that connection stability is strong. BACKGROUND
[0002] Modern self-tapping screw is widely used in building, car light weight and electronic miniaturization field, will focus on heterogeneous material connection, intelligent sensing coating and adaptive 3D printing material optimization design in the future, continuously evolve to efficient, intelligent and environmental protection direction. But the self-tapping screw in prior art is mostly single tooth structure, leading to the self-tapping screw being easily pulled out.
[0003] Therefore, the utility model aims at providing a self-tapping screw that connection stability is strong to solve the above problems. INVENTION CONTENTS
[0004] In view of the above problems, a self-tapping screw that connection stability is strong is provided, by setting the first tooth and the second tooth at equal intervals on the shank of the self-tapping screw, the problem that the self-tapping screw is easily pulled out due to the single tooth structure of the self-tapping screw is solved.
[0005] To solve the problems of prior art, the utility model provides a self-tapping screw that connection stability is strong, comprising a first tooth and a second tooth, the first tooth and the second tooth are arranged at equal intervals on the shank of the self-tapping screw.
[0006] Preferably, a notch is formed on the first tooth.
[0007] Preferably, there is at least one pair of notches on each circle of first teeth.
[0008] Preferably, the lowest point of the notch is higher than the highest point of the second tooth.
[0009] Preferably, the first tooth and the second tooth are arranged in a staggered manner in the radial direction.
[0010] Preferably, the shape of the notch is V-shaped, U-shaped or arc-shaped, and the edges of the notch are smoothly treated.
[0011] Preferably, the head of the shank is provided with a hexagonal flange, and the radial outer edge of the hexagonal flange is chamfered to facilitate the rotation and tightening operation of the self-tapping screw by the tool during installation.
[0012] Preferably, the self-tapping screw is made of high-strength alloy steel.
[0013] The utility model has the beneficial effects compared with the prior art:
[0014] 1. The utility model discloses a first tooth and second tooth of equal interval setting, ensure that the self -tapping screw can be evenly distributed in the concrete, provide the consistent pulling force, and form the mechanical occlusion with the concrete wall surface, greatly increase the anchoring force of self -tapping screw in the wall surface, effectively resist the external force pulling, not easy to fall off, improve the connection stability significantly.
[0015] 2. The utility model discloses the notched opening of first tooth, these notched openings not only reduce the resistance in the process of beating into, still provide the discharge passage for air and dust, avoid the impurity accumulation, be favorable to the close combination of self -tapping screw and wall surface. Meanwhile, the design of notched opening enhances the pulling force after self -tapping screw beats into, makes it more difficult to be pulled out by external force, further improves the connection stability.
[0016] 3. The utility model discloses the high -strength alloy steel material of adoption, make self -tapping screw have high tensile strength and hardness, can bear greater pressure and friction, not easy to deform or break. Meanwhile, alloy steel also has good toughness, can keep stable connection performance when being impacted or vibrated, not easy to slacken or fall off, provide more reliable, more durable connection effect. BRIEF DESCRIPTION OF DRAWINGS
[0017] Figure 1 It is a three-dimensional schematic view of the utility model discloses a self -tapping screw of strong connection stability.
[0018] Figure 2 It is the front view of the utility model discloses a self -tapping screw of strong connection stability.
[0019] The figure mark is: 1, first tooth, 2, second tooth, 3, nail body, 4, notched opening, 5, hex flange. DETAILED DESCRIPTION
[0020] In order to further understand the characteristics, technical means and specific purposes, functions reached by the utility model, the utility model is described in further detail below in combination with the drawings and specific embodiments.
[0021] Refer to Figure 1 And Figure 2 As shown in the figure: a self -tapping screw of strong connection stability, including first tooth 1 and second tooth 2, first tooth 1 and second tooth 2 equal interval setting are arranged on the nail body 3 of self -tapping screw.
[0022] The connection stability of the self-tapping nail in the prior art is poor, in order to solve the above problems, the utility model provides a self-tapping nail with double-tooth structure, which is characterized by comprising specially designed first teeth 1 and second teeth 2, the first teeth 1 and the second teeth 2 are arranged at equal intervals on the nail body 3 of the self-tapping nail. When the self-tapping nail is driven into the concrete wall surface, the equal-interval tooth arrangement can ensure that the self-tapping nail is uniformly distributed in the concrete, thereby providing uniform pulling force. The first teeth 1 and the second teeth 2 form mechanical engagement with the concrete wall surface, increasing the anchoring force of the self-tapping nail in the wall surface. This design enables the self-tapping nail to resist pulling more effectively when subjected to external force, and is not easy to fall off from the wall surface, thereby enhancing the connection stability of the self-tapping nail and the concrete wall surface.
[0023] Referring to Figure 1 and Figure 2 , the notch 4 is provided on the first tooth 1.
[0024] The notch 4 can reduce the resistance received by the self-tapping nail, because during the driving process, the concrete wall body rotates passively and is easy to generate frictional resistance to the self-tapping nail, and the design of the notch 4 helps to alleviate this resistance. Secondly, the notch 4 can also make the air and dust generated during the driving process have a channel to be taken out, thereby avoiding the accumulation of air and dust between the self-tapping nail and the concrete wall surface, which is conducive to the better combination of the self-tapping nail with the wall surface. Finally, these notches 4 can also enhance the pulling force after the self-tapping nail is driven in, making it more difficult for the self-tapping nail to be pulled out directly from the wall surface by external force, further improving the connection stability of the self-tapping nail and the concrete wall surface.
[0025] Referring to Figure 1 and Figure 2 , there is at least one pair of notches 4 on each circle of first teeth 1.
[0026] During the process of driving the self-tapping nail into the concrete wall surface, the multiple notches 4 can more effectively reduce the resistance encountered, so that the self-tapping nail can more smoothly penetrate the wall surface material. At the same time, the multiple notches 4 also provide more channels, so that the air and dust generated during the driving process can be more fully taken out, avoiding the interference of these impurities on the combination of the self-tapping nail with the wall surface. In addition, the multiple notches 4 can also enhance the mechanical engagement effect of the self-tapping nail and the concrete wall surface to a greater extent, thereby improving the pulling force of the self-tapping nail and ensuring the firmness of the self-tapping nail in the wall surface.
[0027] The lowest point of the notch 4 is higher than the highest point of the second tooth 2.
[0028] Since the lowest point of the notch 4 is higher than the highest point of the second tooth 2, the second tooth 2 can more fully contact and form mechanical engagement with the concrete wall surface, further enhancing the anchoring effect of the self-tapping nail in the wall surface.
[0029] Referring toFigure 1 and Figure 2 As shown in
[0030] When the self-tapping screw is driven into the concrete wall, the first tooth 1 and the second tooth 2 can form mechanical engagement with the concrete at different positions in the radial direction, respectively. Since the first tooth 1 and the second tooth 2 are staggered with each other, more intensive and uniform engagement points are formed in the circumferential direction of the self-tapping screw. Such intensive distribution of engagement points not only increases the contact area between the self-tapping screw and the concrete wall, but also enhances the resistance of the self-tapping screw when subjected to external forces.
[0031] Referring to Figure 1 and Figure 2 As shown in
[0032] Firstly, the V-shaped, U-shaped or arc-shaped notch 4 shape can effectively reduce the contact area with the concrete during the process of driving the self-tapping screw into the concrete wall, thereby reducing the resistance during driving and enabling the self-tapping screw to penetrate the wall more smoothly. Secondly, the smooth edge of the notch 4 can reduce the damage to the concrete wall during the driving process, making the wall surface more smooth, and also can reduce the stress concentration phenomenon caused by the sharp edge of the self-tapping screw, improve its service life and connection stability.
[0033] Referring to Figure 1 and Figure 2 As shown in
[0034] The hexagonal flange 5 provides a convenient force surface for the user, so that during installation, the user can firmly hold the hexagonal flange 5 with a tool such as a wrench, thereby easily rotating and tightening the self-tapping screw.
[0035] The self-tapping screw is made of high-strength alloy steel.
[0036] High-strength alloy steel has high tensile strength and hardness, which can withstand large pressure and friction when the self-tapping screw is driven into the concrete wall, and is not easy to deform or break. At the same time, the alloy steel also has good toughness, which can maintain stable connection performance when subjected to impact or vibration, and is not easy to loosen or fall off. Therefore, the self-tapping screw made of high-strength alloy steel can provide more reliable and durable connection effect, and enhance its stability and safety in various application environments.
[0037] Working principle: The self-tapping screw is provided with first teeth 1 and second teeth 2, which are arranged at equal intervals on the nail body 3, ensuring that when the self-tapping screw is driven into the concrete wall, it can be evenly distributed in the concrete, providing consistent pulling force. The first teeth 1 and the second teeth 2 form a mechanical engagement with the concrete wall, greatly increasing the anchoring force of the self-tapping screw in the wall, enabling it to effectively resist external pulling and not easily fall off.
[0038] Grooves 4 are provided on the first teeth 1, which reduce resistance during driving and alleviate the frictional resistance of the concrete wall to the self-tapping screw. At the same time, the grooves 4 provide a channel for air and dust generated during driving, avoiding the accumulation of these impurities between the self-tapping screw and the concrete wall, which is conducive to the close combination of the self-tapping screw and the wall. In addition, the design of the grooves 4 also enhances the pulling force after the self-tapping screw is driven, making it more difficult to be pulled out by external force.
[0039] There are at least two grooves 4 on each circle of first teeth 1, which makes the self-tapping screw more smooth when driven into the concrete wall, while providing more channels for air and dust to escape, further avoiding the interference of impurities with the combination of the self-tapping screw and the wall. Multiple grooves 4 also enhance the mechanical engagement effect of the self-tapping screw and the concrete wall, improving its pulling force.
[0040] The lowest point of the groove 4 is higher than the highest point of the second tooth 2, which makes the second tooth 2 more fully contact with the concrete wall and form a mechanical engagement, further enhancing the anchoring effect of the self-tapping screw in the wall.
[0041] The first teeth 1 and the second teeth 2 are arranged in a radial direction, which makes the self-tapping screw form a more dense and uniform engagement point in the circumferential direction, increasing the contact area between the self-tapping screw and the concrete wall, and enhancing its resistance when subjected to external force.
[0042] The shape of the groove 4 is one of V-shaped, U-shaped or arc-shaped, and the edge of the groove 4 is smoothly treated. This design reduces the damage to the concrete wall during driving of the self-tapping screw, keeps the wall smooth, and also reduces the stress concentration phenomenon of the self-tapping screw due to sharp edges, improving its service life and connection stability.
[0043] The head of the nail body 3 is provided with a hexagonal flange 5, and the radial outer edge is provided with a chamfer, which facilitates the user to rotate and tighten the self-tapping screw during installation through tools, improving the installation efficiency and accuracy.
[0044] Finally, the self-tapping screw is made of high-strength alloy steel material, which has high tensile strength and hardness, can withstand large pressure and friction, and is not easy to deform or break. At the same time, the alloy steel also has good toughness, can maintain stable connection performance when impacted or vibrated, and is not easy to loosen or fall off. Therefore, this self-tapping screw with strong connection stability can provide more reliable and more durable connection effect, and enhance the stability and safety in various application environments.
[0045] The above embodiments only express one or several embodiments of the present application, and the description is more specific and detailed, but it cannot be understood as a limitation on the scope of the present application. It should be pointed out that for ordinary skilled persons in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which all belong to the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the appended claims.
Claims
1. A self-tapping screw with strong connection stability, characterized in that, The self-tapping screw comprises first teeth (1) and second teeth (2), which are arranged at equal intervals on a shank (3) of the self-tapping screw.
2. The self-tapping screw with high connection stability according to claim 1, characterized in that, A notch (4) is formed on the first teeth (1).
3. The strong connection stability self-tapping screw according to claim 2, wherein There is at least one pair of notches (4) on each circle of the first teeth (1).
4. The strong connection stability self-tapping screw according to claim 2, wherein The lowest point of the notch (4) is higher than the highest point of the second teeth (2).
5. The self-tapping screw with high connection stability according to claim 1, wherein The first teeth (1) and the second teeth (2) are arranged in a radial direction along the shank (3) in a staggered manner.
6. The strong connection stability self-tapping screw according to claim 2, wherein The notch (4) is in a V shape, a U shape or an arc shape, and the edge of the notch (4) is rounded.
7. The strong connection stability self-tapping screw according to claim 1, wherein A hexagonal flange (5) is arranged on the head of the shank (3), and the radial outer edge of the hexagonal flange (5) is chamfered.
8. The strong connection stability self-tapping screw according to claim 1, wherein The self-tapping screw is made of high-strength alloy steel.