Multi-layer self-positioning high-stability self-tapping screw

Abstract

The utility model discloses a multi-layer self-positioning high-stability self-tapping screw which comprises a screw body, a positioning assembly, an auxiliary assembly, a non-equidistant screw pitch structure, a conical guide part, a buffer gasket and a double-layer anti-skid pad. A conical guide part is arranged at the front end of the screw body and can be automatically guided in during mounting; the middle section and the tail end are provided with non-equidistant pitch structures, so that the anti-loosening effect is enhanced; the positioning assembly is composed of multiple layers of locking structures, and multi-layer positioning is achieved. The auxiliary assembly comprises an elastic clamping device and a double-layer non-slip mat, and the stability is further improved. The screw structure provided by the utility model has high stability and an anti-loosening effect, and is suitable for high-strength connection in a complex environment.

Description

Technical Field

[0001] The utility model relates to the technical field of screws, and particularly relates to a self-tapping screw structure with multi-layer self-positioning and high stability characteristics, which is applicable to high-strength connection application scenarios of materials such as metals and woods. Background Art

[0002] At present, the common self-tapping screws on the market are mostly used for general connection structures, but it is difficult to ensure their fastening effects in complex environments. Especially in high-strength connections, the loosening or screwing out of screws will affect the connection stability and even pose potential safety hazards. Therefore, how to enhance the anti-loosening and positioning effects of screws through structural optimization has become one of the key problems in screw design. Summary of the Utility Model

[0003] The purpose of the utility model is to provide a multi-layer self-positioning high-stability self-tapping screw to solve the problems mentioned in the above background art.

[0004] To achieve the above purpose, the utility model provides the following technical solutions:

[0005] A multi-layer self-positioning high-stability self-tapping screw includes a screw body, a positioning component, an auxiliary component, a non-equidistant pitch structure, a conical guiding part, a buffer gasket, and a double-layer anti-slip pad; the screw body is provided with a non-equidistant pitch structure, and the pitch gradually decreases in the middle section and the end; a conical guiding part is provided at the front end of the screw body, the positioning component is arranged at the end of the screw body, and a locking structure composed of multi-layer wear-resistant alloys is adopted to gradually increase the locking effect; the auxiliary component includes an elastic clamping device located at the end of the screw body; the buffer gasket is arranged between the screw body and the contact surface of the target material; the double-layer anti-slip pad is located between the auxiliary component and the buffer gasket to increase the overall fixing stability.

[0006] Preferably, the change ratio of the non-equidistant pitch structure in the middle section and the end of the screw body is 2:1 to enhance the locking effect of the screw after embedding.

[0007] Preferably, the positioning component is provided with a three-layer locking structure, and each layer of the locking structure is composed of wear-resistant alloys with different thicknesses to improve the anti-vibration performance.

[0008] Preferably, the elastic clamping device is made of stainless steel, the surface is provided with anti-slip textures, and an inner groove is provided at the clamping position to be in close contact with the edge of the target material.

[0009] Preferably, the buffer gasket is made of silica gel and has a thickness of 0.5 mm, which is used to absorb the impact force when the screw is screwed in.

[0010] Preferably, the tip angle of the conical guiding part is 30 degrees to ensure that the screw is gradually embedded in the target material and realizes smooth guiding.

[0011] Preferably, the diameter of the screw body ranges from 3 to 5 millimeters and the length is 20 to 50 millimeters, which is suitable for high-strength connections of metals and woods.

[0012] Preferably, the positioning component and the auxiliary component are fixed on the screw body by welding.

[0013] Preferably, the double-layer anti-slip pad is made of a composite material of rubber and polyurethane, with different hardness layers, enhancing the overall anti-slip effect and increasing friction.

[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0015] 1. For this multi-layer self-positioning high-stability self-tapping screw, through the structural design of the multi-layer positioning component and the double-layer anti-slip pad, the fastening property of the screw under high-vibration conditions is significantly enhanced, effectively suppressing the risk of screw loosening, and it is particularly suitable for anti-vibration applications of industrial equipment and mechanical structures.

[0016] 2. For this multi-layer self-positioning high-stability self-tapping screw, a buffer gasket and a non-uniform pitch structure are added. The buffer gasket absorbs the stress during the screwing process, avoiding direct damage to the material, and the non-uniform pitch design improves the fitting degree of the screw, thereby significantly extending the service life of the connector and improving the connection stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 : Schematic diagram of the overall structure of a multi-layer self-positioning high-stability self-tapping screw of the present utility model;

[0018] Figure 2 : Schematic diagram of the non-uniform pitch structure of the self-tapping screw body of the present utility model;

[0019] Figure 3 : Schematic diagram of the multi-layer locking structure of the positioning component of the present utility model;

[0020] Figure 4 : Schematic diagram of the installation of the elastic clamping device and the double-layer anti-slip pad of the present utility model;

[0021] Figure 5 : Schematic diagram of the contact of the buffer gasket between the screw body and the target material of the present utility model.

[0022] In the figure: 1 is the screw body; 2 is the positioning component; 301 is the auxiliary component; 4 is the non-uniform pitch structure; 5 is the conical guiding part; 6 is the buffer gasket; 7 is the double-layer anti-slip pad; 301 is the elastic clamping device. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0024] Please refer to Figures 1-5 as shown, a technical solution provided by the present invention:

[0025] A multi-layer self-positioning high-stability self-tapping screw includes a screw body, a positioning component, an auxiliary component, a non-equidistant pitch structure, a conical guiding part, a buffer gasket, and a double-layer anti-slip pad; the screw body is provided with a non-equidistant pitch structure, where the pitch gradually decreases in the middle section and the end; the front end of the screw body is provided with a conical guiding part, and the positioning component is arranged at the end of the screw body, adopting a locking structure composed of multi-layer wear-resistant alloys to gradually increase the locking effect; the auxiliary component includes an elastic clamping device located at the end of the screw body; the buffer gasket is arranged between the screw body and the contact surface of the target material; the double-layer anti-slip pad is located between the auxiliary component and the buffer gasket to increase the overall fixing stability. Embodiment 1: Overall structure design and anti-loosening effect.

[0026] As Figure 1 shown, the self-tapping screw of the present invention includes a screw body (1), a positioning component (2), an auxiliary component (301), a non-equidistant pitch structure (4), a conical guiding part (5), a buffer gasket (6), and a double-layer anti-slip pad (7). The screw body (1) is made of high-strength stainless steel material, and its front end is provided with a conical guiding part (5) with a tip angle of 30 degrees for rapid positioning during installation. The screw body is provided with a non-equidistant pitch structure (4), where the pitch gradually decreases from the middle section to the end (the change ratio is 2:1), which can increase the embedding tightness after the screw is screwed into the target material. This design not only improves the fastening effect of the self-tapping screw but also enhances the anti-loosening performance between the screw and the material, ensuring high connection stability in various complex environments.

[0027] Embodiment 2: Shock resistance and stability of the multi-layer locking positioning component

[0028] As Figure 3As shown, the positioning component (2) is composed of three layers of wear-resistant alloy materials, with the thickness of each layer of alloy material increasing in turn, which is used to provide a layered locking effect. The locking component with a three-layer structure can effectively prevent the screw from loosening under the action of multiple repeated vibrations and loads. The hardness and thickness of each layer of wear-resistant alloy are optimized to ensure shock resistance in different usage environments. For example, the thickness of the first layer is 0.3 mm, which is used to closely fit the thread groove; the thickness of the second layer is 0.5 mm, which is used to further enhance the locking force; the thickness of the third layer is 0.8 mm, which increases the impact resistance of the overall structure. The multi-layer design of the positioning component makes the utility model particularly suitable for long-term vibration environments, such as key connection parts of mechanical equipment.

[0029] Embodiment 3: Anti-slip and fixing effects of the elastic clamping device and the double-layer anti-slip pad

[0030] As Figure 4 shown, the auxiliary component (301) is provided with an elastic clamping device (301) and a double-layer anti-slip pad (7), which are used to improve the anti-slip performance of the screw. The elastic clamping device (301) is made of high-elastic stainless steel. The outer surface of the device is provided with anti-slip textures and inner grooves, which can be in close contact with the edge of the target material. The clamping device applies uniform radial pressure after being screwed in, so that the screw is closely attached to the surrounding material. The double-layer anti-slip pad (7) is composed of two layers with different hardnesses. The thickness of the rubber layer is 0.3 mm, which provides a primary anti-slip effect; the thickness of the polyurethane layer is 0.5 mm, which provides higher hardness and adhesion. The design of this double-layer anti-slip pad is suitable for connections with high friction requirements, especially in high-humidity or high-vibration environments, ensuring that the screw always remains stable and is not easily displaced.

[0031] Embodiment 4: Shock absorption protection of the buffer gasket

[0032] As Figure 5 shown, the buffer gasket (6) is arranged between the screw body (1) and the target material and is made of silica gel material with a thickness of 0.5 mm, which has strong shock absorption ability. During the process of screwing in the screw, the buffer gasket can absorb the excess mechanical impact force, avoiding excessive extrusion or damage to the material structure caused by forced screwing in. For example, when fastening high-hardness materials, the buffer gasket can prevent cracks from occurring at the connection due to stress concentration, improving the service life of the overall structure. In addition, the buffer gasket can also be used in low-temperature or high-temperature environments to avoid material deformation or connection loosening caused by temperature changes.

[0033] Embodiment 5: Compatibility between screw specifications and application scenarios

[0034] The self - tapping screw of the present utility model is applicable to various materials such as metal and wood, and is especially suitable for scenarios with high - strength connection and high anti - vibration requirements. The diameter of the screw body (1) is 3 to 5 mm, and the length is 20 to 50 mm. By adjusting these parameters, different connection requirements can be met. For example, in a wooden structure, it is recommended to use a screw with a diameter of 3 mm and a length of 30 mm to ensure that it can be embedded deep into the wood without damaging the material; while in a metal structure, it is recommended to choose a screw with a diameter of 5 mm and a length of 50 mm to ensure high - strength connection. In a humid or corrosive environment, a stainless - steel material with stronger corrosion resistance can be selected, and through the anti - slip cushion design, the stability of the screw in a harsh environment can be improved.

[0035] Example 6: Application of the multi - functional self - positioning structure in actual assembly

[0036] In actual assembly, the self - positioning structure of the present utility model can be automatically adapted by detecting the thickness and hardness of the target material. When the screw starts to be screwed into the target material, the conical guiding part (5) will quickly complete the positioning, and the non - equidistant pitch structure (4) gradually increases the screwing - in resistance, enabling the screw body to automatically adjust the embedding depth. The positioning component (2) gradually increases the contact area with the inner wall of the material during the screwing process of the screw, and finally realizes the final fixation through multi - layer locking. After the structure assembly is completed, the double - layer anti - slip pad (7) and the elastic clamping device (301) ensure that the screw does not loosen due to temperature, humidity or long - term use.

[0037] The above shows and describes the basic principles, main features and advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above - mentioned embodiments. The above - mentioned embodiments and the descriptions in the specification are only preferred examples of the present utility model and do not limit the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the present utility model claimed. The scope of protection claimed by the present utility model is defined by the appended claims and their equivalents.

Claims

1. A multi-layer self-positioning high-stability self-tapping screw, comprising a screw body (1), a positioning component (2), an auxiliary component (3), a non-uniform pitch structure (4), a conical guiding portion (5), a buffer gasket (6) and a double-layer anti-slip pad (7); the screw body (1) is provided with a non-uniform pitch structure (4), wherein the pitch gradually decreases in the middle section and the end; the front end of the screw body is provided with a conical guiding portion (5), the positioning component (2) is arranged at the end of the screw body, and is a locking structure composed of multi-layer wear-resistant alloys, increasing the locking effect layer by layer; the auxiliary component (3) includes an elastic clamping device (301), which is located at the end of the screw body; the buffer gasket (6) is arranged between the screw body and the contact surface of the target material; the double-layer anti-slip pad (7) is located between the auxiliary component (3) and the buffer gasket (6) to increase the overall fixing stability.

2. The self-tapping screw according to claim 1, characterized in that: The change ratio of the non-uniform pitch structure (4) with the pitch decreasing in the middle section and the end of the screw body is 2:1, so as to enhance the locking effect of the screw after embedding.

3. The self-tapping screw according to claim 1, wherein: The positioning component (2) is provided with a three-layer locking structure, and each layer of the locking structure is composed of wear-resistant alloys with different thicknesses to improve the anti-vibration performance.

4. The self-tapping screw according to claim 1, wherein: The elastic clamping device (301) is made of stainless steel, with anti-slip textures on the surface, and inner grooves are provided at the clamping position to be in close contact with the edge of the target material.

5. The self-tapping screw according to claim 1, characterized in that: The buffer gasket (6) is made of silica gel, with a thickness of 0.5 mm, and is used to absorb the impact force when the screw is screwed in.

6. The self-tapping screw according to claim 1, wherein: The tip angle of the conical guiding portion (5) is 30 degrees to ensure that the screw is gradually embedded in the target material and achieve smooth guiding.

7. The self-tapping screw according to claim 1, wherein: The diameter range of the screw body (1) is 3 to 5 mm, and the length is 20 to 50 mm, which is suitable for high-strength connection of metals and woods.

8. The self-tapping screw according to claim 1, wherein: The positioning component (2) and the auxiliary component (3) are fixed on the screw body (1) by welding.

9. The self-tapping screw according to claim 1, characterized in that: The double-layer anti-slip pad (7) is made of a composite material of rubber and polyurethane, with different hardness layers, enhancing the overall anti-slip effect and increasing the friction force.

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