Anti-deformation wear-resistant screw

Abstract

The anti-deformation wear-resistant screw comprises a screw rod, a screw cap is fixed to the top of the screw rod, a conical head is arranged at the bottom of the screw rod, and a cross groove is formed in the top of the screw cap; reinforcing ribs are connected to the connecting position of the screw cap and the screw rod in an equal-angle mode, containing grooves are formed in the screw cap in an equal-angle mode, and limiting blocks are connected to the inner walls of the containing grooves in a sliding mode. According to the anti-deformation wear-resistant screw, the limiting block and the reset spring are arranged, in the screwing or loosening process of the screw, a screwdriver head can be effectively prevented from accidentally sliding out of the cross-shaped groove, the risk of loosening of the screw is reduced, the connection stability is improved, stress can be dispersed through the multiple reinforcing ribs, and the anti-deformation wear-resistant screw is more durable. The risk of cracks or fractures of the connecting part is reduced, the overall stretching resistance, shearing resistance and bending resistance of the screw are improved, and the screw can bear larger external force without deformation or damage.

Description

Technical Field

[0001] This utility model relates to the field of screw technology, specifically to a deformation-resistant and wear-resistant screw. Background Technology

[0002] Screws are common fasteners, usually made of metal or other materials, used to connect two or more objects together. A drawback is that existing screws are prone to loosening during installation, affecting the connection between objects and resulting in poor performance. To address this, existing technology (Chinese patent application number: 202221314537.1, authorized announcement date: 2022-09-13) discloses a self-tapping and self-drilling screw with good anti-loosening effect. This is achieved by incorporating a drill bit, rubber ring, top cap, and baffle plate to prevent loosening of the screw. During installation, first position the drill bit at the bottom of the screw in the installation position. Then, use a tool inserted into the top cover to turn the screw. The drill bit, with its pyramidal structure, penetrates the object, ensuring high penetration and stability during installation. During installation, a baffle at one end of the threaded section cleans burrs from the inner wall of the drill hole, facilitating the insertion of a rubber ring at one end. This rubber ring increases the stability of the screw installation. In the event of vibration, the rubber ring provides cushioning, preventing the screw from loosening and enhancing its performance.

[0003] Existing technology involves drilling through objects using a pyramidal drill bit, which has high penetration and ensures stability during installation. However, when users tighten screws, the screwdriver head may not be accurately positioned in the center of the cross-shaped groove, leading to slippage and reduced tightening efficiency. Furthermore, when screws are subjected to significant tensile, compressive, or shear forces, stress concentration can easily occur at the connection between the screw head and the screw shaft. Without reinforcing ribs to distribute the stress, this area may crack or even break. Therefore, we propose a deformation-resistant and wear-resistant screw that can effectively solve these problems. Utility Model Content

[0004] The purpose of this invention is to provide a deformation-resistant and wear-resistant screw to solve the problems mentioned in the background art, such as the screwdriver tip not being able to accurately position itself in the center of the cross groove when the user is tightening the screw, which easily leads to slippage and reduced screw tightening efficiency. Furthermore, when the screw is subjected to large tensile, compressive, or shear forces, stress concentration is likely to occur at the connection between the screw head and the screw rod. Since there is no reinforcing rib to disperse the stress, cracks or even breakage may occur at this part.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a deformation-resistant and wear-resistant screw, comprising a screw rod, a screw head fixed to the top of the screw rod, and a tapered head at the bottom of the screw rod, the top of the screw head having a cross groove; further comprising: reinforcing ribs connected at equal angles at the connection position between the screw head and the screw rod, receiving grooves formed at equal angles inside the screw head, and limiting blocks slidably connected to the inner wall of the receiving groove, the opposite ends of the four limiting blocks extending into the interior of the cross groove, and return springs installed at the opposite ends of the four limiting blocks and inside the receiving groove.

[0006] Preferably, the screw, the tapered head, and the nail head are made of nickel-chromium alloy steel, the tapered head is welded to the top of the screw, and the taper of the tapered head is between 5° and 15°.

[0007] Preferably, the reinforcing ribs are arranged in a triangular shape and are distributed at the connection position between the nail head and the screw.

[0008] Preferably, the four limiting blocks are inclined at one end of the cross groove, and the limiting blocks form an elastic telescopic structure with the receiving groove through the reset spring.

[0009] Preferably, a rubber washer and a positioning ring are respectively fitted and fixed on the outer side of the upper end of the screw, and the diameter of the rubber washer and the positioning ring is larger than the diameter of the conical head.

[0010] Preferably, the rubber washer is positioned above the positioning ring, and the diameter of the rubber washer is smaller than the diameter of the positioning ring.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: This anti-deformation and wear-resistant screw, by utilizing four limiting blocks and a return spring, can effectively prevent the screwdriver tip from accidentally slipping out of the cross groove during the tightening or loosening of the screw, reducing the risk of screw loosening and improving the stability of the connection. Furthermore, by utilizing multiple reinforcing ribs, it can disperse stress, reducing the risk of cracks or breakage at the connection point, and improving the overall tensile, shear, and bending resistance of the screw, enabling it to withstand greater external forces without deformation or damage. The specific details are as follows:

[0012] (1) The tapered head is designed to guide the screw when it approaches the mounting hole, automatically aligning it with the mounting hole and reducing alignment time and error. The multiple reinforcing ribs at the connection between the screw head and the screw rod can disperse stress, reduce the risk of cracks or breakage at the connection, and improve the overall tensile, shear and bending resistance of the screw, enabling it to withstand greater external forces without deformation or damage. Furthermore, since the screw rod, tapered head and screw head are made of nickel-chromium alloy steel, they have high strength, hardness and toughness, can withstand greater friction and pressure, and are not easily worn.

[0013] (2) When the screwdriver bit is inserted into the cross groove, it will squeeze the four limit blocks, causing the limit blocks to move in the opposite direction. As the screwdriver bit is inserted, the four limit blocks will reset under the elastic force of the return spring and clamp and fix the screwdriver. Thus, during the tightening or loosening of the screw, it can effectively prevent the screwdriver bit from accidentally slipping out of the cross groove, reduce the risk of screw loosening, and improve the stability of the connection.

[0014] (3) The rubber gasket has good elasticity and flexibility, which can fill the gap between the screw and the connected parts when the screw is tightened, effectively preventing liquid, gas or dust from leaking from the connection and improving the sealing of the connection. At the same time, the rubber gasket has good shock absorption performance, which can absorb the vibration and impact generated during the operation of the equipment, reduce the vibration transmitted to other parts through the screw, thereby protecting the connection and surrounding parts from vibration damage and extending the service life of the equipment.

[0015] (4) The positioning ring can accurately limit the position of the screw during the installation process, ensuring that the screw is accurately aligned with the mounting hole on the connected part, improving the accuracy and consistency of the installation. At the same time, the positioning ring forms a tight fit with the surface of the connected part or the mounting hole, which can effectively limit the rotation of the screw. Even when subjected to external force, the position of the screw can be kept stable, avoiding loosening of the connection or affecting the normal operation of the equipment due to the rotation of the screw. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the main cross-section of the present invention;

[0017] Figure 2 This is a schematic diagram of the main structure of this utility model;

[0018] Figure 3 This is a three-dimensional structural diagram of the screw, conical head, and nail head of this utility model;

[0019] Figure 4 This is a schematic diagram of the connection structure between the reinforcing rib, the screw, and the nail head of this utility model;

[0020] Figure 5 This is a schematic diagram of the connection structure between the limiting block and the reset spring of this utility model;

[0021] Figure 6 This utility model Figure 1 Enlarged structural diagram at point A in the middle.

[0022] In the diagram: 1. Screw; 2. Conical head; 3. Nail head; 4. Reinforcing rib; 5. Cross groove; 6. Rubber washer; 7. Positioning ring; 8. Limiting block; 9. Return spring. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figures 1-6 This utility model provides a technical solution: a deformation-resistant and wear-resistant screw;

[0025] Example 1: To address the issue in the prior art where the screwdriver tip may not be accurately positioned at the center of the cross-shaped groove 5 when the user is tightening the screw, leading to slippage and reduced tightening efficiency, and to the stress concentration at the connection between the screw head 3 and the screw 1 when the screw is subjected to large tensile, compressive, or shear forces, and the lack of reinforcing ribs 4 to distribute the stress, potentially causing cracks or even breakage at this location, the following solution is disclosed. Please refer to the following for details. Figure 1 , Figure 5 and Figure 6 As shown, the device includes a screw 1, a nail head 3 fixed to the top of the screw 1, and a tapered head 2 at the bottom of the screw 1. A cross groove 5 is formed on the top of the nail head 3. The screw 1, tapered head 2, and nail head 3 are made of nickel-chromium alloy steel. The tapered head 2 is welded to the top of the screw 1, and the taper of the tapered head 2 is between 5° and 15°. The device also includes a receiving groove formed at equal angles inside the nail head 3. Limiting blocks 8 are slidably connected to the inner wall of the receiving groove. The opposite ends of the four limiting blocks 8 extend into the interior of the cross groove 5. A return spring 9 is installed between the opposite ends of the four limiting blocks 8 and the interior of the receiving groove. The sides of the four limiting blocks 8 extending into the cross groove 5 are inclined. The limiting blocks 8 form an elastic telescopic structure with the receiving groove through the return spring 9.

[0026] The tapered head 2 guides the screw as it approaches the mounting hole, automatically aligning it and reducing alignment time and error. The screw rod 1, tapered head 2, and screw cap 3 are made of nickel-chromium alloy steel, possessing high strength, hardness, and toughness, capable of withstanding significant friction and pressure, and resistant to wear. When the user inserts the screwdriver bit into the cross-shaped groove 5, it compresses the four limiting blocks 8, causing them to move in the opposite direction. As the screwdriver bit is inserted, the four limiting blocks 8 return to their original position under the force of the return spring 9, clamping and fixing the screwdriver. This effectively prevents the screwdriver bit from accidentally slipping out of the cross-shaped groove 5 during screw tightening or loosening, reducing the risk of screw loosening and improving connection stability.

[0027] Example 2: Unlike Example 1, this example utilizes reinforcing rib 4 to enable the screw to withstand greater external force without deformation or damage. See details... Figure 1 , Figure 2 , Figure 4 and Figure 5 As shown, the connection position between the nail head 3 and the screw 1 is connected to a reinforcing rib 4 at an equal angle. The reinforcing rib 4 is triangular in shape and is distributed at the connection position between the conical head 2 and the screw 1.

[0028] The multiple reinforcing ribs 4 set at the connection position between the screw head 3 and the screw rod 1 can disperse stress, reduce the risk of cracks or breakage at the connection point, and improve the overall tensile, shear and bending resistance of the screw, enabling it to withstand greater external forces without deformation or damage.

[0029] Example 3: Unlike Example 2, this example utilizes a rubber gasket 6 to improve the sealing of the connection. See details... Figures 1-3 As shown, a rubber washer 6 and a positioning ring 7 are respectively fitted and fixed on the outer side of the upper end of the screw 1, and the diameter of the rubber washer 6 and the positioning ring 7 is larger than the diameter of the conical head 2. The rubber washer 6 is positioned above the positioning ring 7, and the diameter of the rubber washer 6 is smaller than the diameter of the positioning ring 7.

[0030] The rubber washer 6, with its excellent elasticity and flexibility, fills the gap between the screw and the connected parts when the screw is tightened, effectively preventing leakage of liquids, gases, or dust from the connection and improving the sealing performance. Simultaneously, the rubber washer 6 has good shock absorption properties, absorbing vibrations and impacts generated during equipment operation and reducing the transmission of vibrations to other components through the screw. This protects the connection and surrounding components from vibration damage and extends the service life of the equipment. Furthermore, the positioning ring 7 accurately defines the position of the screw during installation, ensuring precise alignment between the screw and the mounting hole on the connected parts, improving installation accuracy and consistency. The positioning ring 7 also forms a tight fit with the surface of the connected parts or the mounting hole, effectively limiting screw rotation. Even under external force, the screw remains stable, preventing loosening of the connection or disruption of normal equipment operation due to screw rotation.

[0031] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0032] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A deformation-resistant and wear-resistant screw, comprising a screw rod (1), a screw head (3) fixed to the top of the screw rod (1), and a tapered head (2) provided at the bottom of the screw rod (1), wherein a cross groove (5) is provided on the top of the screw head (3); characterized in that, Also includes: The nail head (3) and the screw (1) are connected at equal angles by reinforcing ribs (4). The nail head (3) has a receiving groove at equal angles inside, and the inner wall of the receiving groove is slidably connected to a limiting block (8). The opposite ends of the four limiting blocks (8) extend into the interior of the cross groove (5), and the opposite ends of the four limiting blocks (8) and the interior of the receiving groove are equipped with a return spring (9).

2. The deformation-resistant and wear-resistant screw according to claim 1, characterized in that: The screw (1), the conical head (2) and the nail head (3) are made of nickel-chromium alloy steel. The conical head (2) is welded to the top of the screw (1), and the taper of the conical head (2) is between 5° and 15°.

3. The deformation-resistant and wear-resistant screw according to claim 1, characterized in that: The reinforcing rib (4) is arranged in a triangular shape and is distributed at the connection position between the nail head (3) and the screw (1).

4. The deformation-resistant and wear-resistant screw according to claim 1, characterized in that: The four limiting blocks (8) are inclined at one end of the cross groove (5), and the limiting blocks (8) form an elastic telescopic structure with the receiving groove through the reset spring (9).

5. A deformation-resistant and wear-resistant screw according to claim 1, characterized in that: A rubber washer (6) and a positioning ring (7) are respectively fitted and fixed on the outer side of the upper end of the screw (1), and the diameter of the rubber washer (6) and the positioning ring (7) is larger than the diameter of the conical head (2).

6. A deformation-resistant and wear-resistant screw according to claim 5, characterized in that: The rubber washer (6) is positioned above the positioning ring (7), and the diameter of the rubber washer (6) is smaller than the diameter of the positioning ring (7).

Images