Long-life sunk screw

Abstract

The utility model discloses a long-service-life sunk screw, and relates to the technical field of fasteners. Comprising a screw cap, a screw rod body and a bayonet assembly, a clamping groove is formed in the top end of the screw cap, the bayonet assembly comprises a mounting ring, a protruding block and a second bayonet, a storage groove is formed in the top end of the screw cap, and an arc-shaped rod is rotationally arranged in the storage groove. According to the screw, the bayonet assembly, the arc-shaped rod and other components are arranged, so that when the screw is used, if a second bayonet is seriously abraded and deformed, the bayonet assembly in the clamping groove is disassembled and replaced, and the screw can be normally rotated to be disassembled and assembled; after the two sets of arc-shaped rods stored in the two sets of storage grooves rotate and are erected, under the condition that no special tool exists, the screw can be rotationally disassembled after the rod bodies penetrate through the interiors of the two sets of arc-shaped rods, the disassembling difficulty of the screw is effectively simplified, the maintenance cost is reduced, and the practicability of the screw is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of fasteners, and particularly relates to a long-life countersunk head screw. Background Art

[0002] Long-life countersunk head screws generally refer to those screws designed for long-term use and capable of maintaining performance under various environmental conditions. The design of such screws takes into account corrosion resistance, high strength, high temperature resistance, and good oxidation resistance to adapt to harsh working environments and extend service life. The design of the countersunk head screw allows the screw head to be buried inside the material, which can not only keep the surface of the workpiece beautiful but also provide better structural integrity. Long-life countersunk head screws are widely used in mechanical equipment, automobile manufacturing, aerospace and other fields, and are particularly excellent in applications where it is necessary to hide fasteners or where space is limited. For example, they can be used in occasions with high requirements for surface smoothness such as airplanes, automobile interiors, and furniture.

[0003] At present, during the use of existing long-life countersunk head screws, once the countersunk head screw is fully installed, especially without special tools, disassembly may become difficult, which may lead to an increase in maintenance costs because special tools or extra effort may be required to remove the screw. Moreover, after long-term use of the bayonet inside the screw cap, the bayonet opened inside the screw cap is prone to wear and deformation, which in turn easily affects the normal screwing of the screw. To solve this technical problem, the utility model proposes a long-life countersunk head screw. Summary of the Utility Model

[0004] The main purpose of the utility model is to provide a long-life countersunk head screw, which can effectively solve the problems mentioned in the background art.

[0005] To achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0006] A long-life countersunk head screw, comprising a screw cap, a screw rod body, and a bayonet assembly. A positioning groove is opened at the top end of the screw cap, and the bayonet assembly is detachably arranged in the positioning groove. The bayonet assembly includes: a mounting ring, a convex block, and a second bayonet. A storage groove is opened at the top end of the screw cap, and an arc-shaped rod is rotatably arranged inside the storage groove, and the arc-shaped rod is in an arc shape.

[0007] Preferably, the screw rod body is arranged at the bottom end of the screw cap, and a first bayonet is opened inside the screw cap, and the first bayonet is located below the positioning groove.

[0008] Preferably, multiple groups of convex blocks are arranged on the outer side of the mounting ring, and the mounting ring and the convex blocks are arranged inside the positioning groove.

[0009] Preferably, the second bayonet is penetrated and opened inside the mounting ring, and the second bayonet is located above the first bayonet, and the internal dimensions of the first bayonet and the second bayonet are the same.

[0010] Preferably, a clamping ring is arranged at the top end of the screw cap, and a rubber ring is arranged on the outer side of the clamping ring. A combined cap is movably arranged at the top end of the screw cap, and the combined cap is clamped and connected with the clamping ring.

[0011] Preferably, the storage grooves are located on both sides of the clamping groove, and the storage grooves are arc-shaped grooves.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] In the utility model, by arranging components such as a bayonet assembly and an arc-shaped rod, during the use of the screw, if the second bayonet is severely worn and deformed, by disassembling and replacing the bayonet assembly inside the clamping groove, the screw can rotate and be disassembled and assembled normally. After the two arc-shaped rods stored in the two storage grooves are rotated and erected, without special tools, by passing a rod through the inside of the two arc-shaped rods, the screw can be rotated and disassembled, effectively simplifying the disassembly difficulty of the screw, reducing the maintenance cost, and increasing the practicability of the screw.

[0014] In the utility model, by arranging components such as a first bayonet and a combined cap, after disassembling the bayonet assembly inside the clamping groove, by inserting an external tool into the inside of the first bayonet, the screw can be rotated and disassembled and assembled. During the process of inserting the combined cap outside the clamping ring, the rubber ring outside the clamping ring will be extruded and deformed. Then, as the combined cap continues to be pressed down, the combined cap can be sleeved outside the clamping ring, and the combined cap can be used to cover and protect the top end of the screw cap, effectively delaying the occurrence of situations such as the screw being corroded by the external environment, and improving the service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic diagram of the overall structure of a long-life countersunk screw of the utility model;

[0016] Figure 2 is a schematic cross-sectional structure diagram of the screw cap of a long-life countersunk screw of the utility model;

[0017] Figure 3 is an exploded structure diagram of the bayonet assembly and the screw cap of a long-life countersunk screw of the utility model;

[0018] Figure 4 is a schematic structure diagram of the screw cap of a long-life countersunk screw of the utility model;

[0019] Figure 5 is a schematic structure diagram of the bayonet assembly of a long-life countersunk screw of the utility model.

[0020] In the figure: 1, screw cap; 2, screw rod body; 3, clamping groove; 4, first bayonet; 5, bayonet assembly; 501, mounting ring; 502, convex block; 503, second bayonet; 6, storage groove; 7, arc rod; 8, clamping ring; 9, combined cap. Specific embodiments

[0021] In order to make the technical means, creative features, achieved purposes and effects realized by the present utility model easy to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0022] As Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 shown, a long-life countersunk screw;

[0023] It includes a screw cap 1, a screw rod body 2 and a bayonet assembly 5. A clamping groove 3 is opened at the top end of the screw cap 1. The bayonet assembly 5 is detachably arranged in the clamping groove 3. The bayonet assembly 5 includes: a mounting ring 501, a convex block 502 and a second bayonet 503. A storage groove 6 is opened at the top end of the screw cap 1. An arc rod 7 is rotatably arranged inside the storage groove 6, and the arc rod 7 is in an arc shape. Multiple groups of convex blocks 502 are arranged on the outer side of the mounting ring 501. The mounting ring 501 and the convex block 502 are arranged inside the clamping groove 3. The second bayonet 503 is penetrated and opened inside the mounting ring 501, and the second bayonet 503 is located above the first bayonet 4. The internal dimensions of the first bayonet 4 and the second bayonet 503 are the same. The storage groove 6 is located on both sides of the clamping groove 3, and the storage groove 6 is an arc groove.

[0024] The clamping groove 3 is opened at the top end of the screw cap 1. After the convex block 502 arranged on the outer side of the mounting ring 501 is inserted into the inside of the clamping groove 3, the bayonet assembly 5 can be at the same height as the top end of the screw cap 1. The second bayonet 503 opened inside the mounting ring 501 is used to provide an insertion space for external tools. It is convenient to rotate and disassemble the screw by inserting the external tool into the inside of the second bayonet 503. During the use of the screw, if the second bayonet 503 is severely worn and deformed, by disassembling and replacing the bayonet assembly 5 inside the clamping groove 3, the screw can be normally rotated and disassembled. The storage groove 6 is symmetrically and arc-shapedly opened at the top end of the screw cap 1. The storage groove 6 is used to store and receive the arc rod 7. The arc rod 7 uses the external protruding column to insert into the inside of the screw cap 1. After the two arc rods 7 stored in the two storage grooves 6 are rotated 90 degrees and erected, without a special tool, by passing the rod-shaped through the inside of the two arc rods 7, the rotation and disassembly of the screw can be realized, effectively simplifying the disassembly difficulty of the screw and reducing the maintenance cost, and increasing the practicability of the screw.

[0025] AsFigure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown in Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 , a long-life countersunk screw;

[0026] The screw rod body 2 is arranged at the bottom end of the screw cap 1. A first bayonet 4 is opened inside the screw cap 1, and the first bayonet 4 is located below the clamping groove 3. A clamping ring 8 is arranged at the top end of the screw cap 1, and a rubber ring is arranged on the outer side of the clamping ring 8. A combined cap 9 is movably arranged at the top end of the screw cap 1, and the combined cap 9 is clamped and connected with the clamping ring 8.

[0027] The screw cap 1 and the screw rod body 2 are the main combined components of the countersunk screw. The first bayonet 4 is opened inside the screw cap 1, and the internal dimensions of the first bayonet 4 are the same as those of the second bayonet 503. After the bayonet component 5 inside the clamping groove 3 is disassembled, by inserting an external tool into the first bayonet 4, the rotation and disassembly of the screw can be realized. The clamping ring 8 is composed of a support ring and a rubber ring. During the process of inserting the combined cap 9 outside the clamping ring 8, the rubber ring on the outer side of the clamping ring 8 will be squeezed and deformed. Then, as the combined cap 9 continues to be pressed down, the combined cap 9 can be sleeved outside the clamping ring 8. The combined cap 9 can cover and protect the top end of the screw cap 1, effectively delaying the occurrence of situations such as the screw being corroded by the external environment.

[0028] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A long-life countersunk head screw, comprising a screw cap (1), a screw rod body (2) and a bayonet component (5), characterized in that: A clamping groove (3) is formed at the top end of the screw cap (1), and the bayonet assembly (5) is detachably arranged in the clamping groove (3). The bayonet assembly (5) includes: a mounting ring (501), a convex block (502) and a second bayonet (503). A storage groove (6) is formed at the top end of the screw cap (1), and an arc-shaped rod (7) is rotatably arranged inside the storage groove (6), and the arc-shaped rod (7) is in an arc shape.

2. The long-life countersunk head screw according to claim 1, characterized in that: The screw rod body (2) is arranged at the bottom end of the screw cap (1), and a first bayonet (4) is formed inside the screw cap (1), and the first bayonet (4) is located below the clamping groove (3).

3. A long-life countersunk screw according to claim 1, characterized in that: Multiple groups of the convex blocks (502) are arranged on the outer side of the mounting ring (501), and the mounting ring (501) and the convex blocks (502) are arranged inside the clamping groove (3).

4. The long-life countersunk screw according to claim 3, wherein: The second bayonet (503) is formed through the inside of the mounting ring (501), and the second bayonet (503) is located above the first bayonet (4), and the internal dimensions of the first bayonet (4) and the second bayonet (503) are the same.

5. A long-life countersunk screw according to claim 1, characterized in that: A clamping ring (8) is arranged at the top end of the screw cap (1), and a rubber ring is arranged on the outer side of the clamping ring (8). A combined cap (9) is movably arranged at the top end of the screw cap (1), and the combined cap (9) is clamped and connected with the clamping ring (8).

6. A long-life countersunk screw according to claim 1, characterized in that: The storage groove (6) is located on both sides of the clamping groove (3), and the storage groove (6) is an arc-shaped groove.

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