Self-tapping screw with protection function

Abstract

The self-tapping screw with the protection function comprises a self-tapping screw body and a protection mechanism, the self-tapping screw body comprises a screw rod and a nut which are matched with each other, the protection mechanism comprises a protection top cover and a protection sleeve, a thread groove is formed in the inner wall of the bottom end of the protection top cover, and the protection sleeve is arranged in the thread groove. The top end of the protective sleeve is connected with a threaded pipe in matched threaded connection with the threaded groove, the self-tapping screw body penetrates through the protective top cover from top to bottom and extends into the protective sleeve, the nut is tightly attached to the inner wall of the bottom end of the protective top cover, and a sealing cover is hinged to the top face of the protective top cover in a matched mode. And a rubber protection pad is fixedly arranged on the outer wall of the periphery of the protection top cover. Compared with the prior art, the self-tapping screw has the advantages that the nut is protected by the protective top cover, the screw rod is protected by the protective sleeve, and the risk of abrasion of the self-tapping screw body is effectively reduced; the rubber protection pad can improve the protection performance of the self-tapping screw body, and the hands of an operator are prevented from being scratched and abraded.

Description

Technical Field

[0001] The utility model relates to the technical field of self-tapping screws, in particular to a self-tapping screw with a protective function. Background Art

[0002] Self-tapping screws, or quick-thread screws, are steel fasteners that are passivated with zinc plating on the surface. Self-tapping screws are mostly used to connect 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.

[0003] However, the existing self-tapping screws are prone to bumping during transportation, resulting in wear, affecting the use effect and even scratching the operator's hands. Therefore, a self-tapping screw with a protective function is needed to solve these problems. Utility Model Content

[0004] The technical problem to be solved by the utility model is that bumps are easy to occur during transportation, resulting in wear and affecting use, and a self-tapping screw with a protective function is provided.

[0005] In order to solve the above technical problems, the technical solution provided by the utility model is: a self-tapping screw with a protective function, comprising a self-tapping screw body and a protective mechanism, the self-tapping screw body comprising a screw and a nut matching each other, the top surface of the nut being provided with a cross groove, the protective mechanism comprising a protective top cover and a protective sleeve, the inner wall of the bottom end of the protective top cover being provided with a threaded groove, the top end of the protective sleeve being connected with a threaded tube matching the threaded groove, the self-tapping screw body extending from top to bottom through the protective top cover into the protective sleeve, the nut being arranged close to the inner wall of the bottom end of the protective top cover, the bottom surface of the nut being provided with an annular groove, the protective top cover being provided with an annular clamping ring inserted into the annular groove, the top surface of the protective top cover being hingedly provided with a sealing cover, and the outer walls around the protective top cover being fixed with rubber protective pads.

[0006] As an improvement, a sealing ring is provided on the bottom surface of the sealing cover, which is close to the inner wall of the protective top cover; a first connecting plate is fixedly provided on the outer wall of one side of the sealing cover; a second connecting plate is provided on the outer wall of one side of the protective top cover, which is located directly below the first connecting plate; a connecting rod is penetrated through the first connecting plate and extends to the bottom end of the second connecting plate; a threaded structure is provided at the bottom end of the connecting rod; a connecting cap is provided on the threaded structure, which is threadedly connected to the bottom surface of the second connecting plate; a torsion spring is provided between the sealing cover and the protective top cover to cooperate with the reset of the sealing cover; the sealing cover can be limited and fixed by the connecting rod, thereby improving the sealing effect of the protective top cover and preventing moisture from entering when the self-tapping screw body is working, thereby reducing the risk of damage.

[0007] As an improvement, the inner walls around the protective top cover are evenly provided with anti-slip strips that are close to the side walls of the nut. The anti-slip strips are made of rubber. When installing the protective mechanism, the anti-slip strips are close to the outer wall of the nut to limit and stabilize the position of the protective mechanism and reduce the risk of damage to the nut.

[0008] As an improvement, the bottom surface of the protective top cover is provided with a fastening groove located around the thread groove, and the fastening groove is an annular structure. The top surface of the protective sleeve is provided with a fastening block extending into the fastening groove, and the outer wall of the protective top cover is provided with a fastening bolt extending into the fastening groove and threadedly connected to the fastening block, so as to stabilize the connection structure between the protective top cover and the protective sleeve and facilitate rapid installation and disassembly operations of the two.

[0009] As an improvement, the rubber protective pad is evenly provided with buffering protrusions, which are made of rubber material and provide buffering when bumps occur, thereby reducing the risk of damage due to bumps.

[0010] Compared with the prior art, the advantages of the utility model are: the protective mechanism includes a protective top cover and a protective sleeve, the protective top cover protects the position of the nut, and the protective sleeve protects the position of the screw, effectively reducing the risk of wear of the self-tapping screw body, and the detachable structure between the two facilitates the use of the self-tapping screw body; the rubber protective pad of the protective mechanism can increase the protective performance of the self-tapping screw body to prevent scratches and wear on the operator's hands. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a stereoscopic diagram of a self-tapping screw with a protective function of the utility model.

[0012] Figure 2 It is a sectional stereoscopic diagram of a self-tapping screw with a protective function of the utility model.

[0013] Figure 3 It is a first stereoscopic view of a self-tapping screw body of a self-tapping screw with a protective function according to the utility model.

[0014] Figure 4 It is a second stereoscopic view of the self-tapping screw body of the self-tapping screw with a protective function of the utility model.

[0015] Figure 5 It is the first stereoscopic view of the protective top cover of the self-tapping screw with a protective function of the utility model.

[0016] Figure 6 It is the second stereoscopic view of the protective top cover of the self-tapping screw with a protective function of the utility model.

[0017] Figure 7 The utility model is a cross-sectional stereoscopic diagram of a protection mechanism of a self-tapping screw with a protection function.

[0018] Figure 8 yes Figure 2 Schematic diagram of the structure of part A.

[0019] Fig. 9 yes Figure 6 Schematic diagram of the structure of part B.

[0020] As shown in the figure: 1. Self-tapping screw body; 2. Protection mechanism; 3. Screw; 4. Nut; 5. Cross groove; 6. Protective top cover; 7. Protective sleeve; 8. Threaded groove; 9. Threaded tube; 10. Annular groove; 11. Annular retaining ring; 12. Sealing cover; 13. Rubber protective pad; 14. Sealing ring; 15. First connecting plate; 16. Second connecting plate; 17. Connecting rod; 18. Threaded structure; 19. Connecting cap; 20. Anti-slip strip; 21. Fastening groove; 22. Fastening block; 23. Fastening bolt; 24. Buffer protrusion. DETAILED DESCRIPTION

[0021] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0022] Embodiment 1

[0023] Combined with Figure 1-3 As shown in Figures 5-8, a self-tapping screw with a protective function comprises a self-tapping screw body 1 and a protective mechanism 2, wherein the self-tapping screw body 1 comprises a screw rod 3 and a nut 4 which match each other, and the top surface of the nut 4 is provided with a cross groove 5, and the protective mechanism 2 comprises a protective top cover 6 and a protective sleeve 7, the inner wall of the bottom end of the protective top cover 6 is provided with a threaded groove 8, and the top end of the protective sleeve 7 is connected with a threaded tube 9 which is threadedly connected to the threaded groove 8, and the bottom surface of the protective top cover 6 is provided with a fastening groove 21 located around the threaded groove 8, and the fastening groove 21 is an annular structure, and the top surface of the protective sleeve 7 is provided with a fastening block 22 extending into the fastening groove 21, and the outer wall of the protective top cover 6 is provided with a fastening bolt 23 which extends into the fastening groove 21 and is threadedly connected to the fastening block 22;

[0024] Through the above structure, the protective structure is first assembled, and the threaded tube 9 at the top of the protective sleeve 7 is threadedly connected with the threaded groove 8 on the inner wall of the protective top cover 6. As the protective sleeve 7 continues to approach the protective top cover 6, the fastening block 22 enters the fastening groove 21, and finally the fastening bolt 23 is used to penetrate the protective top cover 6 and threadedly connect it with the fastening block 22. Since the threaded groove 8 and the threaded tube 9 are matched with each other, the connection position of the fastening bolt 23 and the fastening block 22 is fixed.

[0025] Embodiment 2

[0026] Based on the first embodiment, combined with the attached Figure 4 and 9As shown, the self-tapping screw body 1 passes through the protective top cover 6 from top to bottom and extends into the protective sleeve 7. The inner walls around the protective top cover 6 are evenly provided with anti-slip strips 20 that are close to the side walls of the nut 4. The anti-slip strips 20 are made of rubber. The nut 4 is set close to the inner wall of the bottom end of the protective top cover 6. The bottom surface of the nut 4 is provided with an annular groove 10. The protective top cover 6 is provided with an annular snap ring 11 that is inserted into the annular groove 10. The top surface of the protective top cover 6 is hingedly provided with a sealing cover 12. The bottom surface of the sealing cover 12 is provided with a sealing ring 14 that is close to the inner wall of the protective top cover 6. The outer wall of one side of the sealing cover 12 is fixedly provided with A first connecting plate 15, an outer wall of one side of the protective top cover 6 is provided with a second connecting plate 16 located directly below the first connecting plate 15, a connecting rod 17 extending to the bottom end of the second connecting plate 16 is penetrated through the first connecting plate 15, a threaded structure 18 is provided at the bottom end of the connecting rod 17, a connecting cap 19 close to the bottom surface of the second connecting plate 16 is provided on the threaded structure 18, a torsion spring is provided between the sealing cover 12 and the protective top cover 6 to cooperate with the reset of the sealing cover 12, and a rubber protective pad 13 is fixedly provided on the outer wall around the protective top cover 6, and a buffer protrusion 24 is evenly provided on the rubber protective pad 13;

[0027] Through the above structure, the sealing cover 12 is opened, and the self-tapping screw body 1 is placed in the protective mechanism 2 from top to bottom, so that the screw 3 extends to the protective sleeve 7 and is set, and the nut 4 is close to the inner wall of the top of the protective top cover 6. At this time, the anti-slip strip 20 is close to the outer wall around the nut 4, and the annular retaining ring 11 enters the annular retaining groove 10, and then the sealing cover 12 is released. The sealing cover 12 automatically resets with the cooperation of the torsion spring, and the connecting rod 17 is placed through the first connecting plate 15 and the second connecting plate 16. The connecting cap 19 is connected to the threaded structure 18 until the connecting cap 19 is close to the second connecting plate 16 to complete the sealing of the protective top cover 6; during transportation or use, the sealing cover 12 seals and protects the position of the nut 4, and the anti-slip strip 20 is close to the outer wall of the nut 4 for protection. The rubber protective pad 13 cooperates with the buffer protrusion 24 to buffer when a bump occurs, reducing the risk of damage due to bumps, and the protective sleeve 7 protects the position of the screw 3 to avoid wear.

[0028] When the utility model is implemented, the protective structure is first assembled, the threaded tube 9 at the top of the protective sleeve 7 is threadedly connected with the threaded groove 8 on the inner wall of the protective top cover 6, and the fastening block 22 enters the fastening groove 21 while the protective sleeve 7 is constantly approaching the protective top cover 6, and finally the fastening bolt 23 is used to penetrate the protective top cover 6 and threadedly connect with the fastening block 22, so as to complete the assembly of the protective mechanism 2;

[0029] Open the sealing cover 12, place the self-tapping screw body 1 in the protection mechanism 2 from top to bottom, so that the screw rod 3 extends to the protection sleeve 7, and the nut 4 is close to the inner wall of the top of the protection cover 6. At this time, the anti-slip strip 20 is close to the outer wall around the nut 4, and the annular retaining ring 11 enters the annular retaining groove 10, and then release the sealing cover 12. The sealing cover 12 automatically resets with the cooperation of the torsion spring, and the connecting rod 17 is placed through the first connecting plate 15 and the second connecting plate 16, and the connecting cap 19 is used to connect with the threaded structure 18 until the connecting cap 19 is close to the second connecting plate 16, so as to complete the sealing of the protection cover 6;

[0030] During transportation or use, the sealing cover 12 seals and protects the nut 4, while the anti-slip strip 20 is tightly attached to the outer wall of the nut 4 for protection. The rubber protective pad 13 cooperates with the buffering protrusion 24 to buffer when a collision occurs, thereby reducing the risk of damage caused by the collision. The protective sleeve 7 protects the screw 3 to prevent wear.

[0031] When the self-tapping screw body 1 is needed, the fastening bolt 23 is directly removed, and the protective sleeve 7 can be rotated to remove it from the thread groove 8 of the protective top cover 6, and the self-tapping screw body 1 can be used through the cross groove 5.

[0032] The above description of the utility model and its implementation methods is not restrictive. The drawings show only one implementation method of the utility model, and the actual structure is not limited thereto. In short, if ordinary technicians in this field are inspired by it and design structural methods and embodiments similar to the technical solution without creativity without departing from the purpose of the invention of the utility model, they should all fall within the protection scope of the utility model.

Claims

1. A self-tapping screw with a protective function, comprising a self-tapping screw body (1) and a protective mechanism (2), wherein the self-tapping screw body (1) comprises a screw rod (3) and a nut (4) which match each other, and a cross groove (5) is provided on the top surface of the nut (4), characterized in that: The protection mechanism (2) comprises a protection top cover (6) and a protection sleeve (7); a threaded groove (8) is provided on the inner wall of the bottom end of the protection top cover (6); a threaded tube (9) is connected to the top end of the protection sleeve (7) and is threadedly connected to the threaded groove (8); the self-tapping screw body (1) penetrates the protection top cover (6) from top to bottom and extends into the protection sleeve (7); the nut (4) is arranged close to the inner wall of the bottom end of the protection top cover (6); an annular groove (10) is provided on the bottom surface of the nut (4); an annular snap ring (11) is provided on the protection top cover (6) and is inserted into the annular groove (10); a sealing cover (12) is hingedly provided on the top surface of the protection top cover (6); and a rubber protection pad (13) is fixedly provided on the outer wall around the protection top cover (6).

2. The self-tapping screw with protective function according to claim 1, characterized in that: The bottom surface of the sealing cover (12) is provided with a sealing ring (14) which is in close contact with the inner wall of the protective top cover (6); a first connecting plate (15) is fixedly provided on the outer wall of one side of the sealing cover (12); a second connecting plate (16) is provided on the outer wall of one side of the protective top cover (6) and is located directly below the first connecting plate (15); a connecting rod (17) extending to the bottom end of the second connecting plate (16) is passed through the first connecting plate (15); a threaded structure (18) is provided at the bottom end of the connecting rod (17); a connecting cap (19) which is in close contact with the bottom surface of the second connecting plate (16) is provided on the threaded structure (18) in matching thread connection.

3. The self-tapping screw with protective function according to claim 1, characterized in that: The inner walls around the protective top cover (6) are evenly provided with anti-slip strips (20) that are closely attached to the side walls of the nut (4), and the anti-slip strips (20) are made of rubber.

4. The self-tapping screw with protective function according to claim 1, characterized in that: The bottom surface of the protective top cover (6) is provided with a fastening groove (21) located around the thread groove (8), and the fastening groove (21) is an annular structure. The top surface of the protective sleeve (7) is provided with a fastening block (22) extending into the fastening groove (21), and the outer wall of the protective top cover (6) is provided with a fastening bolt (23) extending into the fastening groove (21) and threadedly connected to the fastening block (22).

5. The self-tapping screw with protective function according to claim 1, characterized in that: The rubber protective pad (13) is evenly provided with buffer protrusions (24).

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