A washer combination screw

Abstract

The utility model relates to a gasket combined screw belongs to combined screw technical field, including screw body, the gasket mechanism of movable establishment in the outside of screw body, be equipped with the cross groove for screwdriver insertion in the screw body, the wear -resisting cover is fixedly established to the cross groove lateral wall of screw body, the reset spring is fixedly established to the inside of cross groove of screw body, reset spring one end is fixedly established to be used for the plugging block that carries out the plugging of the opening between cross groove and wear -resisting cover, the utility model discloses through the elastic force of reset spring, can push the plugging block to the opening between cross groove and wear -resisting cover to carry out the plugging of opening, make the liquid of outside not easy to enter and corrode cross groove, and when screwdriver inserts cross groove will push the plugging block into the inside of cross groove, the plugging block will be back to the original position under the elastic force after screwdriver pulls off cross groove, thereby will not hinder the disassembly of screw, and the operation is more convenient.

Description

Technical Field

[0001] This utility model belongs to the field of combination screw technology, specifically relating to a washer combination screw. Background Technology

[0002] A washer-and-screw combination is a fastener that combines a screw and a washer. This combination typically includes a screw, a spring washer, and a flat washer, though different combinations may be used depending on specific requirements. Common combinations include three-way and two-way screws. A three-way screw consists of a screw, a spring washer, and a flat washer, while a two-way screw may contain only a screw and either a spring washer or a flat washer.

[0003] Patent CN217539262U discloses "a washer-screw combination, comprising a threaded rod, a screw head at the top of the threaded rod, an anti-corrosion mechanism threaded onto the outer surface of the screw head, a ring welded to the bottom of the screw head, a spring washer and an anti-loosening washer movably fitted onto the top surface of the threaded rod, a nut threaded onto the outer surface of the threaded rod, a retainer welded to the bottom of the nut, a connector welded to the bottom of the threaded rod, and an iron strip welded to the bottom of the connector. The anti-corrosion mechanism includes a protective cap." This invention has the advantage of anti-loosening, solving the problems of washer-screw combination screws being difficult to prevent from loosening due to external influences during use, easily causing the screw to detach from the nut, reducing the screw's tightening effect, and being difficult to protect the cross-shaped groove at the top of the screw, easily causing the cross-shaped groove to rust, and affecting the quick disassembly of the screw.

[0004] Although the protective cap described in the above document can cover the cross-shaped groove to prevent it from being corroded by external liquids, the protective cap needs to be screwed onto the outside of the nut after the screw is installed, and the protective cap also needs to be unscrewed from the nut before the screw is removed. This makes it inconvenient to operate, as the protective cap needs to be rotated back and forth when installing or removing the screw. Therefore, it needs to be improved. Utility Model Content

[0005] The purpose of this invention is to provide a washer-screw combination to solve the above-mentioned problems.

[0006] This utility model achieves the above objectives through the following technical solutions: A washer-screw assembly includes a screw body and a washer mechanism movably disposed on the outside of the screw body. The screw body has a cross groove for inserting a screwdriver. A wear-resistant sleeve is fixedly provided on the side wall of the cross groove of the screw body. A return spring is fixedly provided on the inner side of the cross groove of the screw body. A sealing block for sealing the opening between the cross groove and the wear-resistant sleeve is fixedly provided on one end of the return spring.

[0007] By adopting the above technical solution, the sealing block can be pushed between the opening of the cross groove and the wear-resistant sleeve by the elastic force of the return spring to seal the opening, making it difficult for external liquid to enter and corrode the cross groove. When the screwdriver is inserted into the cross groove, it will push the sealing block into the inside of the cross groove. After the screwdriver is pulled out of the cross groove, the sealing block will return to its original position under the elastic force, so as not to hinder the installation and removal of screws.

[0008] As a further optimization of this utility model, the screw body includes a nut end, a screw end, and a transition end fixed between the nut end and the screw end.

[0009] By adopting the above technical solution, the transition end can connect the nut end and the screw end. By rotating the nut end, the screw body can be rotated as a whole, thereby screwing the screw end into the item to be installed and fastened.

[0010] As a further optimization of this utility model, the end of the screw that is away from the nut end is provided with a pointed tip.

[0011] By adopting the above technical solution, the screw body can be screwed into objects such as wood using its pointed tip. As a further optimization of this utility model, a square rod is fixedly provided at the center of one side of the tip, and the square rod is inserted into a square hole opened at one end of the screw.

[0012] By adopting the above technical solution, after the square rod is inserted into the square hole at the end of the nut, the end of the nut and the tip can be connected. When the tip of the screw is damaged, it can be removed from the end of the screw rod for replacement. By replacing parts locally, the overall service life of the combination screw can be extended. As a further optimization of this utility model, the washer mechanism includes a spring washer and a washer movably disposed on the outside of the transition end of the screw body, and the spring washer abuts against the washer and the nut end of the screw body.

[0013] By adopting the above technical solution, and through the combined use of components such as spring washers and gaskets, the washer-screw combination is less prone to loosening after installation, thus improving the screw's tightening effect. As a further optimization of this utility model, the cross groove is formed at the center of the side of the nut end away from the screw end, and the sealing block is slidably disposed in the matching wear-resistant sleeve.

[0014] By adopting the above technical solution, the wear-resistant sleeve can be used as a wear part, which can reduce the wear of the screwdriver on the inner wall of the cross-shaped groove.

[0015] The beneficial effects of this utility model are as follows: 1. The sealing block can be pushed between the opening of the cross groove and the wear-resistant sleeve by the elastic force of the return spring to seal the opening, making it difficult for external liquids to enter and corrode the cross groove. When the screwdriver is inserted into the cross groove, it will push the sealing block into the inside of the cross groove. After the screwdriver is pulled out of the cross groove, the sealing block will return to its original position under the elastic force, so as not to hinder the installation and removal of screws, making the operation more convenient.

[0016] 2. By using spring washers and washers in combination, the washer combination screw is less likely to loosen after installation, improving the screw's tightening effect. The wear-resistant sleeve can also be used as a wear part, reducing the wear of the screwdriver on the inner wall of the cross-shaped groove. When the screw tip is damaged, it can be removed from the screw end for replacement. By replacing some parts, the overall service life of the combination screw can be extended. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a partial exploded view of the structure of this utility model; Figure 3 This is a front view of the overall structure of this utility model.

[0018] In the diagram: 1. Screw body; 11. Nut end; 12. Screw end; 13. Transition end; 14. Tip; 15. Square rod; 2. Spring washer; 21. Washer; 3. Cross groove; 31. Wear-resistant sleeve; 32. Return spring; 33. Sealing block. Detailed Implementation

[0019] The present application will now be described in further detail with reference to the accompanying drawings. It should be noted that the following specific embodiments are only used to further illustrate the present application and should not be construed as limiting the scope of protection of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application based on the above application content.

[0020] Example: Figure 1-3 As shown, a washer-screw combination includes a screw body 1, a washer mechanism, and a cross groove 3. The screw body 1 includes a nut end 11, a screw end 12, and a transition end 13 fixed between the nut end 11 and the screw end 12. The transition end 13 can connect the nut end 11 and the screw end 12. By rotating the nut end 11, the screw body 1 can be rotated as a whole, thereby screwing the screw end 12 into the item to be installed and fastened.

[0021] like Figure 1-3As shown, the end of the screw end 12 away from the nut end 11 is provided with a tip 14, and a square rod 15 is fixedly provided at the center of one side of the tip 14. The square rod 15 is inserted into the square hole opened at one end of the screw end 12. The screw body 1 can be screwed into wood or other materials using the tip 14. After the square rod 15 is inserted into the square hole of the screw end 12, it can connect the screw end 12 and the tip 14. When the tip 14 of the combination screw is damaged, it can be removed from the screw end 12 for replacement. By replacing the part, the overall service life of the combination screw can be extended. Adhesive can be applied to the connection between the square rod 15 and the square hole of the screw end 12 to improve the connection strength between the screw end 12 and the tip 14.

[0022] like Figure 1-3 As shown, the washer mechanism is movably located on the outside of the screw body 1. The washer mechanism includes a spring washer 2 and a washer 21 movably located on the outside of the transition end 13 of the screw body 1. The spring washer 2 abuts against the washer 21 and the nut end 11 of the screw body 1. Under the elastic force of the spring washer 2, the washer 21 can be pressed against the item to be fixed, thereby tightening the screw. After the spring washer 2 and the washer 21 are combined, they can generate continuous axial pressure on the screw by their own elasticity after the screw is tightened. This pressure can counteract the tendency of the screw to loosen due to dynamic loads such as vibration and impact during equipment operation, thereby effectively preventing the connection from loosening and ensuring the reliability of the connection.

[0023] like Figure 1-2 As shown, the screw body 1 has a cross groove 3 for inserting a screwdriver. A wear-resistant sleeve 31 is fixedly provided on the side wall of the cross groove 3 of the screw body 1. A return spring 32 is fixedly provided on the inner side of the cross groove 3 of the screw body 1. A sealing block 33 is fixedly provided at one end of the return spring 32 for sealing the opening between the cross groove 3 and the wear-resistant sleeve 31. The wear-resistant sleeve 31 can be made of wear-resistant and high-strength materials such as high manganese steel. The wear-resistant sleeve 31 can be used as a wear part to delay the wear of the screwdriver on the inner wall of the cross groove 3. When the wear-resistant sleeve 31 is completely worn away, the screw can still be rotated by inserting a screwdriver into the cross groove 3.

[0024] like Figure 1-2 As shown, the cross groove 3 is formed at the center of the side of the nut end 11 away from the screw end 12. The sealing block 33 is slidably disposed in the matching wear-resistant sleeve 31. The wear-resistant sleeve 31 can limit the matching sealing block 33. The cross groove 3 can be inserted into a conventional Phillips screwdriver or a special-shaped Phillips screwdriver to drive the screw to rotate. The return spring 32 can connect the nut end 11 and the sealing block 33.

[0025] It should be noted that, in use, this type of washer combination screw, due to the elasticity of the return spring 32, can push the sealing block 33 between the opening of the cross groove 3 and the wear-resistant sleeve 31 to seal the opening, making it difficult for external liquids to enter and corrode the cross groove 3. Then, insert the screwdriver into the wear-resistant sleeve 31 in the cross groove 3 to rotate the screw, thereby rotating the screw into the item to be installed. Under the elastic force of the spring washer 2, the washer 21 can be pressed against the item to be fixed, thereby tightening the screw and making it less likely to loosen after the washer and screw combination is installed. Furthermore, when the screwdriver is inserted into the cross groove 3, it will push the sealing block 33 into the inside of the cross groove 3. After the screwdriver is pulled out of the cross groove 3, the sealing block 33 will return to its original position under the elastic force, so as not to hinder the installation and removal of the screw, making the operation more convenient. The wear-resistant sleeve 31 can be used as a wear part, which can reduce the wear of the screwdriver on the inner wall of the cross groove 3 and extend the service life of the combination screw.

[0026] The embodiments described above are merely examples of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model.

Claims

1. A washer-screw assembly, comprising a screw body (1) and a washer mechanism movably disposed outside the screw body (1), wherein the screw body (1) has a cross groove (3) for inserting a screwdriver, characterized in that: A wear-resistant sleeve (31) is fixedly provided on the side wall of the cross groove (3) of the screw body (1), and a return spring (32) is fixedly provided on the inner side of the cross groove (3) of the screw body (1). A sealing block (33) is fixedly provided at one end of the return spring (32) for sealing the opening between the cross groove (3) and the wear-resistant sleeve (31).

2. The washer-screw combination according to claim 1, characterized in that: The screw body (1) includes a nut end (11), a screw end (12), and a transition end (13) fixed between the nut end (11) and the screw end (12).

3. The washer-screw combination according to claim 2, characterized in that: The screw end (12) is provided with a pointed tip (14) at the end opposite to the nut end (11).

4. A washer-screw combination according to claim 3, characterized in that: A square rod (15) is fixedly provided at the center of one side of the tip (14), and the square rod (15) is inserted into the square hole opened at one end of the screw end (12).

5. A washer-screw assembly according to claim 2, characterized in that: The washer mechanism includes a spring washer (2) and a washer (21) that are movably disposed outside the transition end (13) of the screw body (1). The spring washer (2) is engaged between the washer (21) and the nut end (11) of the screw body (1).

6. A washer-and-screw combination according to claim 2, characterized in that: The cross groove (3) is opened at the center of the side of the nut end (11) away from the screw end (12), and the sealing block (33) is slidably disposed in the matching wear-resistant sleeve (31).

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