Self-tapping screw with anti-falling structure

Abstract

The invention discloses a self-tapping screw with an anti-falling structure, and relates to the technical field of self-tapping screws, the self-tapping screw comprises a screw body and a hexagonal frame body, the hexagonal frame body is arranged at the top of the screw body, mounting pipes are fixedly inserted into the two sides of the top end of the screw body, and rectangular grooves are formed in the top of one side and the bottom of the other side of the screw body; the screw has the beneficial effects that after the arranged screw body is rotationally inserted into a mounting surface in a threaded mode, the hexagonal frame body is pulled upwards, the hexagonal frame body pulls the two connecting rods to move upwards through the two connecting rods, and the two connecting rods drive the two stop blocks to move upwards till the two stop blocks are separated from the corresponding anti-falling pins; the two anti-falling pins are extruded by the corresponding springs to transversely move towards the outer side, the outer sides of the two anti-falling pins stretch out of the corresponding rectangular grooves to make contact with the inner wall of the self-tapping screw mounting hole, and therefore a better anti-falling function is provided for the self-tapping screw.

Description

Technical Field

[0001] The invention relates to a self-tapping screw, in particular to a self-tapping screw with an anti-slip structure, and belongs to the technical field of self-tapping screws. Background Art

[0002] Self-tapping screws are a type of threaded fastener that drills out the matching female thread in a pre-drilled hole in a metal or non-metal material. Self-tapping screws have the characteristics of high tensile strength, single piece, and single-sided combination. Self-tapping screws are mostly used for connections between thin metal plates (steel plates, sawn plates, etc.). When connecting, first make a threaded bottom hole for the connected parts, and then screw the self-tapping screw into the threaded bottom hole of the connected parts. Since the thread surface of the self-tapping screw has a high hardness (≥45HRC), it can tap out the internal thread in the threaded bottom hole of the connected parts, thereby forming a connection. Among them, a self-tapping screw with application number "CN201821057089.5" adopts a parallel thread portion with a full-thread triangular thread and carburizing heat treatment, so in the process of installing the self-tapping screw , which not only has chip removal space but also reduces the cutting area and radial force of the self-tapping screw, while increasing the cutting performance and strength of the screw, and is not easy to break when installing thick-walled parts such as radiators made of die-cast aluminum alloy as the fastening material; coupled with the guiding effect of the tapered thread part, the installation of the self-tapping screw is stable and reliable. Further search found that the self-tapping screw with application number "CN201120544161.9" scrapes away the outer layer of material such as the sprayed plastic layer or rust layer outside the electrical equipment by scraping the protrusion, thereby realizing the contact between the self-tapping screw and the electrical equipment, ensuring that the electrical equipment is in reliable and effective contact with the ground, and ensuring the safe operation of the electrical equipment. However, the above two types of self-tapping screws still have certain shortcomings when used, and are not convenient for providing better anti-slip function. Summary of the Invention

[0003] The object of the present invention is to provide a self-tapping screw with an anti-slip structure to solve the problem in the above background technology that it is inconvenient to provide a better anti-slip function.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solution: a self-tapping screw with an anti-slip structure, comprising a screw body and a hexagonal frame, the hexagonal frame being arranged at the top of the screw body, a mounting tube being fixedly inserted into both sides of the top of the screw body, a rectangular groove being opened at the top of one side of the screw body and the bottom of the other side thereof, the inner sides of the inner walls of the two rectangular grooves being fixedly connected with a spring, one end of the two springs being fixedly connected with an anti-slip pin, the two anti-slip pins being slidably arranged inside the corresponding rectangular grooves, the top ends of the two inner walls of the rectangular grooves being respectively connected with the bottom ends of the corresponding mounting tubes, the bottoms of the inner walls of the two mounting tubes being slidingly provided with blocks, the bottoms of the inner sides of the two blocks being respectively in sliding contact with the outer sides of the corresponding anti-slip pins, the top ends of the two blocks being fixedly connected with a connecting rope, the top ends of the two connecting ropes being fixedly connected to a connecting rod, the two sides of the inner wall of the hexagonal frame being fixedly connected to one end of the corresponding connecting rod, and a protective component being provided at the top of the screw body.

[0005] Preferably, the protective component includes a supporting reinforcement sleeve and a wear-resistant component, the supporting reinforcement sleeve fixing sleeve is arranged on the top of the screw body, the external fixing sleeve of the supporting reinforcement sleeve is provided with an anti-corrosion protective sleeve, the external fixing sleeve of the anti-corrosion protective sleeve is provided with a heat-insulating and anti-deformation protective sleeve, and the wear-resistant component is arranged on the outside of the heat-insulating and anti-deformation protective sleeve.

[0006] Preferably, the wear-resistant component includes a ceramic wear-resistant layer, the ceramic wear-resistant layer fixing sleeve is arranged on the outside of the heat insulation and anti-deformation protection sleeve, the external fixing sleeve of the ceramic wear-resistant layer is provided with a high manganese steel wear-resistant layer, and the external fixing sleeve of the high manganese steel wear-resistant layer is provided with a rubber wear-resistant layer.

[0007] Preferably, rectangular plates are fixedly provided on both sides of the hexagonal frame, and U-shaped arms are fixedly provided on the outer sides of the two rectangular plates.

[0008] Preferably, a rotating shaft is rotatably inserted through two bearings on the outer sides of the two U-shaped arms, and a support block is fixedly sleeved on the middle parts of the two rotating shafts.

[0009] Preferably, a horizontal plate is fixedly provided at the bottom ends of the two support blocks, and vertical plates are fixedly provided at both sides of the bottom ends of the two horizontal plates.

[0010] Preferably, an auxiliary handle bar is fixedly provided between two of the vertical plates and between the other two vertical plates, and an anti-slip sleeve is fixedly provided on the middle parts of the two auxiliary handle bars.

[0011] Compared with the related art, the self-tapping screw with an anti-slip structure provided by the present invention has the following beneficial effects:

[0012] 1. After rotating the bottom end thread of the screw body and inserting it into the mounting surface of the corresponding working position, pull the set hexagonal frame upward. The hexagonal frame moves upward and pulls the two connecting ropes upward through the two connecting rods. The upward movement of the two connecting ropes drives the two stoppers to slide upward inside the corresponding mounting tubes until the two stoppers are completely slid and separated from the corresponding anti-slip pins. The two anti-slip pins are squeezed by the corresponding springs and move horizontally outward. The two squeezed anti-slip pins slide horizontally inside the corresponding rectangular grooves until the outer sides of the two anti-slip pins extend out of the corresponding rectangular grooves. The outer sides of the two anti-slip pins are in contact with the inner wall of the self-tapping screw mounting hole, so as to provide better anti-slip function for the self-tapping screw. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of the present invention;

[0014] Figure 2 It is a schematic diagram of the cross-sectional structure of the present invention;

[0015] Figure 3 For the present invention Figure 2 A schematic diagram of the enlarged structure at point A;

[0016] Figure 4 For the present invention Figure 2 A schematic diagram of the enlarged structure at point B;

[0017] Figure 5 For the present invention Figure 2 Enlarged structural diagram at C.

[0018] In the figure: 1. Screw body; 2. Hexagonal frame; 3. Protective component; 31. Support reinforcement sleeve; 32. Anti-corrosion protective sleeve; 33. Heat insulation and anti-deformation protective sleeve; 4. Mounting tube; 5. Rectangular groove; 6. Wear-resistant component; 61. Ceramic wear-resistant layer; 62. High manganese steel wear-resistant layer; 63. Rubber wear-resistant layer; 7. Spring; 8. Anti-slip pin; 9. Stop block; 10. Connecting rope; 11. Connecting rod; 12. Rectangular plate; 13. U-shaped arm; 14. Rotating shaft; 15. Support block; 16. Horizontal plate; 17. Vertical plate; 18. Auxiliary handle rod; 19. Anti-slip sleeve. DETAILED DESCRIPTION

[0019] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0020] Example 1:

[0021] See also Figure 1-5 The present invention provides a self-tapping screw with an anti-slip structure, comprising a screw body 1 and a hexagonal frame 2. The hexagonal frame 2 is arranged at the top of the screw body 1, and mounting tubes 4 are fixedly inserted on both sides of the top of the screw body 1. A rectangular groove 5 is opened at the top of one side of the screw body 1 and the bottom of the other side. The inner sides of the inner walls of the two rectangular grooves 5 are fixedly connected with springs 7, and one end of the two springs 7 is fixedly connected with anti-slip pins 8. The two anti-slip pins 8 are slidably arranged in the corresponding rectangular grooves 5. The tops of the inner walls of the two rectangular grooves 5 are respectively connected to the bottom ends of the corresponding mounting tubes 4, and the bottoms of the inner sides of the two mounting tubes 4 are slidably provided with stoppers 9. The bottoms of the inner sides of the two stoppers 9 are respectively in sliding contact with the outer sides of the corresponding anti-slip pins 8. The tops of the two stoppers 9 are fixedly connected with connecting ropes 10, and the tops of the two connecting ropes 10 are fixedly connected with connecting rods 11. The two sides of the inner wall of the hexagonal frame 2 are respectively fixedly connected to one end of the corresponding connecting rod 11, and a protective component 3 is provided on the top of the screw body 1;

[0022] Rectangular plates 12 are fixed on both sides of the hexagonal frame 2, and U-shaped arms 13 are fixed on the outside of the two rectangular plates 12 to facilitate the installation of the rotating shaft 14;

[0023] The outer sides of the two U-shaped arms 13 are rotatably interspersed with a rotating shaft 14 through two bearings, and the middle of the two rotating shafts 14 are fixedly sleeved with a support block 15 to facilitate the installation of the cross plate 16;

[0024] The bottom ends of the two support blocks 15 are fixed with a horizontal plate 16, and both sides of the bottom ends of the two horizontal plates 16 are fixed with vertical plates 17 to facilitate the installation of auxiliary handle bars 18;

[0025] An auxiliary handle bar 18 is fixed between two vertical plates 17 and between the other two vertical plates 17. The middle parts of the two auxiliary handle bars 18 are fixed with anti-slip sleeves 19 to improve the anti-slip performance.

[0026] See also Figure 1-5 A self-tapping screw with an anti-slip structure also includes a protective component 3, which includes a support reinforcement sleeve 31 and a wear-resistant component 6. The support reinforcement sleeve 31 is fixed on the top of the screw body 1, and the outer fixed sleeve of the support reinforcement sleeve 31 is provided with an anti-corrosion protective sleeve 32. The outer fixed sleeve of the anti-corrosion protective sleeve 32 is provided with a heat-insulating and anti-deformation protective sleeve 33. The wear-resistant component 6 is arranged on the outside of the heat-insulating and anti-deformation protective sleeve 33.

[0027] Specifically, such as Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5As shown, first, the support reinforcement sleeve 31 is provided to improve the support strength of the screw body 1, the anti-corrosion protection sleeve 32 is provided to improve the anti-corrosion performance of the screw body 1, and the heat insulation and anti-deformation protection sleeve 33 is provided to improve the heat insulation and anti-deformation performance of the screw body 1.

[0028] Example 2:

[0029] The wear-resistant component 6 includes a ceramic wear-resistant layer 61, which is fixedly sleeved on the outside of the heat-insulating and anti-deformation protective sleeve 33. The outer fixed sleeve of the ceramic wear-resistant layer 61 is provided with a high manganese steel wear-resistant layer 62, and the outer fixed sleeve of the high manganese steel wear-resistant layer 62 is provided with a rubber wear-resistant layer 63.

[0030] Specifically, such as Figure 1 、 Figure 3 As shown, the ceramic wear-resistant layer 61 , the high manganese steel wear-resistant layer 62 and the rubber wear-resistant layer 63 are provided first to provide better wear-resistant protection for the screw body 1 .

[0031] Working principle: When in use, the self-tapping screw with an anti-slip structure of the present invention is first placed in the corresponding working position, and then the various components of the self-tapping screw with the anti-slip structure are checked to see if they are working properly. After the inspection is completed, it can be used. When in use, after the bottom thread of the screw body 1 is rotated and inserted into the mounting surface of the corresponding working position, the four vertical plates 17 are pulled upward through the two auxiliary handle rods 18. The four vertical plates 17 move upward through the two horizontal plates 16, the two support blocks 15, the two rotating shafts 14, the two U-shaped arms 13 and the two rectangular plates 12 to drive the hexagonal frame 2 to move upward, and the hexagonal The frame 2 moves upward by pulling the two connecting ropes 10 upward through the two connecting rods 11. The upward movement of the two connecting ropes 10 drives the two stoppers 9 to slide upward inside the corresponding mounting tubes 4 until the two stoppers 9 are completely slid and separated from the corresponding anti-slip pins 8. The two anti-slip pins 8 are squeezed by the corresponding springs 7 and move laterally outward. The two squeezed anti-slip pins 8 slide laterally inside the corresponding rectangular grooves 5 until the outer sides of the two anti-slip pins 8 extend out of the corresponding rectangular grooves 5. The outer sides of the two anti-slip pins 8 are in contact with the inner wall of the self-tapping screw mounting hole, so as to provide better anti-slip function for the self-tapping screw.

[0032] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A self-tapping screw with an anti-slip structure, comprising a screw body (1) and a hexagonal frame (2), characterized in that: The hexagonal frame (2) is arranged on the top of the screw body (1), and mounting tubes (4) are fixedly inserted on both sides of the top of the screw body (1). A rectangular groove (5) is opened on the top of one side and the bottom of the other side of the screw body (1). The inner sides of the inner walls of the two rectangular grooves (5) are fixedly connected with springs (7), and one end of the two springs (7) is fixedly connected with anti-drop pins (8). The two anti-drop pins (8) are respectively slidably arranged inside the corresponding rectangular grooves (5), and the tops of the inner walls of the two rectangular grooves (5) are respectively connected to the corresponding The bottom ends of the corresponding mounting tubes (4) are connected, and the bottoms of the inner walls of the two mounting tubes (4) are slidingly provided with stoppers (9), and the bottoms of the inner sides of the two stoppers (9) are respectively in sliding contact with the outer sides of the corresponding anti-dropping pins (8), and the tops of the two stoppers (9) are fixedly connected with connecting ropes (10), and the tops of the two connecting ropes (10) are fixedly connected with connecting rods (11), and the two sides of the inner wall of the hexagonal frame (2) are respectively fixedly connected with one end of the corresponding connecting rod (11), and the top of the screw body (1) is provided with a protective component (3).

2. The self-tapping screw with an anti-slip structure according to claim 1, characterized in that: The protective component (3) comprises a support reinforcement sleeve (31) and a wear-resistant component (6); the support reinforcement sleeve (31) is fixedly mounted on the top of the screw body (1); an external fixed sleeve of the support reinforcement sleeve (31) is provided with an anti-corrosion protective sleeve (32); an external fixed sleeve of the anti-corrosion protective sleeve (32) is provided with a heat-insulating and anti-deformation protective sleeve (33); and the wear-resistant component (6) is arranged outside the heat-insulating and anti-deformation protective sleeve (33).

3. The self-tapping screw with an anti-slip structure according to claim 2, characterized in that: The wear-resistant component (6) includes a ceramic wear-resistant layer (61), the ceramic wear-resistant layer (61) is fixedly sleeved on the outside of the heat-insulating and anti-deformation protective sleeve (33), the outer fixed sleeve of the ceramic wear-resistant layer (61) is provided with a high-manganese steel wear-resistant layer (62), and the outer fixed sleeve of the high-manganese steel wear-resistant layer (62) is provided with a rubber wear-resistant layer (63).

4. The self-tapping screw with an anti-slip structure according to claim 1, characterized in that: Rectangular plates (12) are fixedly provided on both sides of the hexagonal frame (2), and U-shaped arms (13) are fixedly provided on the outer sides of the two rectangular plates (12).

5. The self-tapping screw with an anti-slip structure according to claim 4, characterized in that: The outer sides of the two U-shaped arms (13) are both rotatably interspersed with rotating shafts (14) through two bearings, and the middle parts of the two rotating shafts (14) are both fixedly sleeved with support blocks (15).

6. The self-tapping screw with an anti-slip structure according to claim 5, characterized in that: A horizontal plate (16) is fixedly provided at the bottom ends of the two support blocks (15), and vertical plates (17) are fixedly provided on both sides of the bottom ends of the two horizontal plates (16).

7. The self-tapping screw with an anti-slip structure according to claim 6, characterized in that: An auxiliary handle bar (18) is fixedly provided between two of the vertical plates (17) and between the other two vertical plates (17), and an anti-slip sleeve (19) is fixedly provided on the middle parts of the two auxiliary handle bars (18).

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