Screw with long service life

Abstract

The utility model discloses a screw with long service life, which comprises a screw rod, the top of the screw rod is fixedly provided with a screw cap, the screw cap is internally provided with a mounting groove, the middle part of the upper surface of the screw cap is provided with a through hole, the through hole is communicated with the mounting groove, telescopic rods are symmetrically and horizontally fixed on the two side wall surfaces of the mounting groove, and the telescopic ends of the telescopic rods are vertically and fixedly provided with connecting plates; a first covering plate and a second covering plate are installed on the opposite faces of the two connecting plates correspondingly, and inserting blocks are symmetrically arranged at the two ends of the outer surface of one side of the first covering plate and inserted into the second covering plate. When the device is used, the telescopic rods and the springs enable the two covering plates to move back and forth and to be attached together, the two covering plates can be connected together through the inserting blocks, the clamping blocks can reinforce connection between the two covering plates, the two covering plates can play a role in covering the hexagonal hole, the hexagonal hole is isolated from the external environment, and the device is convenient to use. And the condition of corrosion by the external environment is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to screw technical field especially a kind of screw with long service life. BACKGROUND

[0002] Screw is widely used in various fields as a fastening connector. Screw includes nut and screw rod, and the nut is always exposed to the environment, which is easy to be corroded.

[0003] According to the content recorded in the patent document with the public number CN218624983U, a slot and a limiting groove are formed on the surface of the screw cap. When the screw is installed, the insertion ring and the limiting block are aligned with the slot and the limiting groove respectively and then inserted. The insertion ring is placed in the slot. When used in a highly corrosive environment, the insertion ring can be removed after the screw is tightened to prevent corrosion. When necessary, the insertion ring can be reinserted. For some screws that need to be frequently tightened, the detachable and replaceable tightening component can prevent the screw from being tightened due to wear and tear, thereby improving the service life of the screw. An annular groove is formed on the surface of the screw cap at the outer periphery of the slot. The annular rubber pad on the surface of the gasket corresponds to the position of the annular groove. When necessary, the annular rubber pad can be aligned with the annular groove and inserted. The gasket is then attached to the tightening position on the surface of the screw cap, which shields the tightening position and isolates the external environment.

[0004] In this patent, the tightening position can be avoided from being corroded by making it detachable. However, the tightening position cannot be stored in place after it is detached. Alternatively, instead of detaching the tightening position, an annular rubber pad is added to shield the tightening position with the gasket. However, the annular rubber pad is a separate part and is easily lost during installation. Both methods in this patent have drawbacks. UTILITY MODEL CONTENT

[0005] To overcome the shortcomings of the prior art, the utility model provides a screw with long service life. Two cover plates can move back and forth and attach together, which can shield the hexagonal hole, isolate the external environment, reduce corrosion by the external environment, and prolong the service life of the screw. The nut does not need to be detached, and the cover plate is directly installed on the nut, which is very convenient to use.

[0006] To solve the above technical problems, the utility model provides technical schemes as follows: A screw with long service life, including screw rod, the top of screw rod is equipped with screw cap, the inside of screw cap is equipped with installation slot, the upper surface middle part is equipped with through -hole, the through -hole is through with installation slot, the both sides wall surface of installation slot is fixed with telescopic link piece symmetry, the telescopic link piece telescopic end is fixed with connecting plate perpendicularly, the opposite side of two connecting plates is equipped with first cover plate, second cover plate respectively, the both ends of first cover plate one side outer surface is equipped with insertion piece symmetry, the insertion piece is inserted in second cover plate, when the first cover plate, second cover plate are pulled to the middle, the insertion piece gradually inserts in second cover plate, the first cover plate, second cover plate close,

[0007] Further, the telescopic link piece is externally sleeved with a spring, and the spring is fixedly connected between the wall surface of the installation slot and the connecting plate.

[0008] Still further, the top end of the connecting plate is embedded with a ball, the ball is in rolling contact with the wall surface of the installation slot, the bottom end of the connecting plate is fixedly provided with a sliding block, and the bottom end wall surface of the installation slot is provided with a sliding groove, and the sliding block is slidingly arranged in the sliding groove.

[0009] Still further, the opposite end top wall edge of the first cover plate and the second cover plate is fixedly provided with a fixed plate perpendicularly, the second cover plate is provided with an insertion slot corresponding to the insertion piece, and the insertion piece is inserted into the insertion slot.

[0010] Still further, the opposite side outer surfaces of the insertion piece are fixedly provided with clamping blocks symmetrically, the clamping blocks are made of rubber, the second cover plate is provided with a clamping slot corresponding to the clamping blocks, the clamping slot is through with the insertion slot, and the clamping blocks are clamped in the clamping slot.

[0011] As a preferred technical scheme of the utility model, the inside of the screw cap is provided with a hexagonal hole, the hexagonal hole is through with the installation slot, and the diameter of the through hole is greater than the diameter of the circumscribed circle of the hexagonal hole.

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

[0013] When the device is used, the telescopic link piece, the spring, the first cover plate and the second cover plate are arranged, the telescopic link piece and the spring enable the two cover plates to move back and forth and be attached together, the insertion piece enables the two cover plates to be connected together, the clamping blocks enable the connection between the two cover plates to be reinforced, the two cover plates can shield the hexagonal hole, the two cover plates can isolate the external environment, the corrosion of the external environment is reduced, the service life of the screw is prolonged, the screw cap does not need to be disassembled, the cover plates are directly mounted on the screw cap, and the device is very convenient to use. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is the structure schematic view of the utility model;

[0015] Figure 2 It is the screw cap structure schematic view of the utility model;

[0016] Figure 3 It is the utility model Figure 2 The enlarged view of A in the middle;

[0017] Figure 4 It is the utility model Figure 2 The enlarged view of B in the middle;

[0018] Figure 5 It is the plan view of the utility model;

[0019] 1, screw rod; 2, screw cap; 3, through hole; 4, hexagonal hole; 5, installation groove; 6, telescopic rod; 7, spring; 8, connecting plate; 9, first cover plate; 901, second cover plate; 902, fixed plate; 10, sliding block; 1001, sliding groove; 11, ball; 12, plug block; 1201, insertion slot; 13, clamping block; 1301, clamping groove. DETAILED DESCRIPTION

[0020] In order to make the technical means, creative features, purposes and effects of the utility model easy to understand, the utility model is further described below in combination with specific embodiments, but the following embodiments are only preferred embodiments of the utility model, not all. Based on the embodiments in the embodiments, other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model. The experimental methods in the following embodiments are conventional methods, and the materials and reagents used in the following embodiments are commercially available unless otherwise specified.

[0021] EMBODIMENT

[0022] As Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5As shown, the utility model provides a long service life screw, including screw rod 1, the top of screw rod 1 is fixed with screw cap 2, the inside of screw cap 2 is equipped with installation groove 5, and the upper surface middle part is equipped with through -hole 3, through -hole 3 is communicated with installation groove 5, the both sides wall surface of installation groove 5 is fixed with telescopic link 6 symmetrically, the telescopic end of telescopic link 6 is vertically fixed with connecting plate 8, the top end of connecting plate 8 is embedded with ball 11, ball 11 and the wall surface of installation groove 5 are rolling contact, the bottom of connecting plate 8 is fixed with sliding block 10, the bottom end wall surface of installation groove 5 is equipped with sliding slot 1001, sliding block 10 is slidably arranged in sliding slot 1001, the outside of telescopic link 6 is equipped with spring 7, spring 7 is fixedly connected between the wall surface of installation groove 5 and connecting plate 8, the opposite side of two connecting plate 8 is respectively equipped with first cover plate 9, second cover plate 901, the opposite end top end outer wall edge of first cover plate 9, second cover plate 901 is vertically fixed with fixed plate 902, the corresponding place of second cover plate 901 with plug 12 is equipped with insertion slot 1201, plug 12 is inserted into insertion slot 1201, the both ends of first cover plate 9 one side outer surface are provided with plug 12 symmetrically, plug 12 is inserted into second cover plate 901, the both sides outer surface of plug 12 is fixedly installed with clamping block 13 symmetrically, clamping block 13 is rubber material, the corresponding place of second cover plate 901 with clamping block 13 is equipped with clamping groove 1301, clamping groove 1301 is communicated with insertion slot 1201, clamping block 13 is clamped in clamping groove 1301;

[0023] As Figure 1 The inside of screw cap 2 is equipped with hexagon hole 4, the hexagon hole 4 is communicated with installation groove 5, and the diameter of through -hole 3 is greater than the diameter of the circumscribed circle of hexagon hole 4.

[0024] In use of the device, there is a space between the first cover plate 9 and the second cover plate 901, and when it is compressed to the point that it cannot be compressed any more, the space between the first cover plate 9 and the second cover plate 901 is greater than the diameter of the circumscribed circle of the hexagonal hole 4, when installing the screw, using a power wrench, screwdriver and other tools, the first cover plate 9 and the second cover plate 901 are squeezed, the first cover plate 9, the second cover plate 901, the telescopic rod 6 and the spring 7 are squeezed, and the ball 11 is rolled, the sliding block 10 is slid in the sliding groove 1001, the hexagonal hole 4 is rotated to install the screw, after installation, the two fixed plates 902 are pushed, the fixed plates 902 drive the first cover plate 9 and the second cover plate 901 to move, the first cover plate 9 and the second cover plate 901 are close to each other, the ball 11 is rolled, the sliding block 10 is slid in the sliding groove 1001, the plug 12 on the first cover plate 9 is gradually inserted into the insertion groove 1201 on the second cover plate 901, the rubber material clamping block 13 on the plug 12 is deformed and squeezed by the insertion groove 1201, so that the plug 12 can enter the insertion groove 1201, when the first cover plate 9 and the second cover plate 901 are completely attached together, the plug 12 is completely inserted into the insertion groove 1201, the clamping block 13 also contacts the clamping groove 1301, is no longer squeezed by the inner wall of the insertion groove 1201, and rebounds to restore the original state, and is clamped into the clamping groove 1301 to limit and fix the plug 12, at this time, the first cover plate 9 and the second cover plate 901 have been closed, and can shield the hexagonal hole 4, isolate the external environment, reduce the corrosion of the external environment, and detach the screw, the fixed plates 902 are pushed to the two sides, and the first cover plate 9 and the second cover plate 901 are separated, under the action of an external force, the clamping block 13 is deformed and separated from the clamping groove 1301, in use of the device, the telescopic rod 6, the spring 7, the first cover plate 9 and the second cover plate 901 are arranged, the telescopic rod 6 and the spring 7 enable the two cover plates to move back and forth and attach together, the plug 12 is arranged to connect the two cover plates together, and the clamping block 13 is arranged to reinforce the connection between the two cover plates, so that the two cover plates can shield the hexagonal hole 4, isolate the external environment, reduce the corrosion of the external environment, and prolong the service life of the screw.

[0025] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and modifications can be made to these embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A screw with a long service life, comprising a screw shank (1), wherein a screw cap (2) is fixedly provided on the top of the screw shank (1), characterized in that: The screw cap (2) has an internal mounting groove (5) and a through hole (3) in the middle of its upper surface. The mounting groove (5) contains a... Telescopic rods (6) are symmetrically and horizontally fixed to the two side walls of the mounting groove (5); A connecting plate (8) is vertically fixed to the telescopic end of the telescopic rod (6); A first cover plate (9) and a second cover plate (901) are respectively installed on opposite sides of the two connecting plates (8); Inserts (12) are symmetrically arranged at both ends of the outer surface of one side of the first cover plate (9), and the inserts (12) are inserted into the second cover plate (901); When the first cover plate (9) and the second cover plate (901) are pulled toward the center, the insert (12) is gradually inserted into the second cover plate (901), and the first cover plate (9) and the second cover plate (901) are closed.

2. The screw with a long service life according to claim 1, characterized in that: A spring (7) is fitted on the outside of the telescopic rod (6), and the spring (7) is fixedly connected between the wall of the mounting groove (5) and the connecting plate (8).

3. A screw with a long service life according to claim 1, characterized in that: The top of the connecting plate (8) is fitted with a ball bearing (11), the bottom of the connecting plate (8) is fixed with a slider (10), and the bottom wall of the mounting groove (5) is provided with a sliding groove (1001).

4. A screw with a long service life according to claim 1, characterized in that: A fixing plate (902) is vertically fixed at the outer edge of the top of the opposite end of the first cover plate (9) and the second cover plate (901). A slot (1201) is provided on the second cover plate (901) corresponding to the insertion block (12).

5. A screw with a long service life according to claim 4, characterized in that: The upper and lower outer surfaces of the insert (12) are symmetrically fixed with locking blocks (13), and the second cover plate (901) has a locking groove (1301) corresponding to the locking block (13).

6. A screw with a long service life according to claim 1, characterized in that: The screw cap (2) has a hexagonal hole (4) inside, and the diameter of the through hole (3) is larger than the outer circle diameter of the hexagonal hole (4).

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