Anti-rust device for bolt

Abstract

The utility model discloses a bolt rust preventer, and relates to the technical field of rust preventers. The anti-rust device comprises an anti-rust sleeve and an anti-rust cover, the anti-rust sleeve comprises a first protection part and a second protection part, one end of the second protection part is fixedly connected with the first protection part, and a sealing gasket is arranged on the end face of the other end of the second protection part. The first protection part and the second protection part are respectively provided with a through hole, and the inner diameter of the first protection part is smaller than that of the second protection part. The inner side edge of the end face of the first protection part extends upwards to form a first extending part, threads are arranged on the inner side wall and the outer side wall of the first extending part, and the first extending part is in threaded connection with the matched anti-rust cover. The containing cavity formed by the anti-rust sleeve and the anti-rust cover can isolate the stud and the nut from the external environment and is matched with the anti-rust liquid and the sealing gasket, it is guaranteed that the stud and the nut can maintain the good working state, corrosion is avoided, and the service life is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of rust preventers, in particular to a bolt rust preventer. Background Art

[0002] In outdoor environments, bolts are often used to connect different components. However, due to frequent exposure to harsh conditions such as moisture, salt spray, and rain, they are very prone to rust and the strength of the bolts decreases, making it difficult to smoothly remove the nuts from the studs. Moreover, if the torque is too high during the removal process, the studs may easily break, affecting the stability and safety of the connection. Utility Model Content

[0003] In view of the problem that bolts are prone to rust in outdoor environments, which makes it impossible to remove nuts normally, resulting in reduced bolt strength and even breakage, the utility model provides a bolt rust preventer.

[0004] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0005] A bolt rust preventer includes a rust preventer sleeve and a rust preventer cover, the rust preventer sleeve includes a first protecting part and a second protecting part, one end of the second protecting part is fixedly connected to the first protecting part, and a sealing gasket is provided on the end surface of the other end; the first protecting part and the second protecting part both have a through hole, the inner diameter of the first protecting part is smaller than the inner diameter of the second protecting part, and a thread is provided on the inner side wall of the first protecting part; the inner edge of the end surface of the first protecting part extends upward to form a first extension part, the inner side wall and the outer side wall of the first extension part are both provided with threads, the first extension part is threadedly connected to the corresponding rust preventer cover, and the outer side wall of the first protecting part is polygonal.

[0006] Furthermore, the cross-section of the rust-proof cover is concave-shaped, a thread matching the first extension portion is provided on the inner side wall, and the outer side wall is polygonal.

[0007] Furthermore, the second protecting portion is cylindrical, the first protecting portion is fixed to the top of the second protecting portion, and the through hole of the first protecting portion is coaxial with the through hole of the second protecting portion.

[0008] Furthermore, the second protective portion includes a first connecting segment, a third connecting segment and several second connecting segments in an annular shape, the first connecting segment is located above the third connecting segment, and each second connecting segment is located between the first connecting segment and the third connecting segment, and the outer walls of the first connecting segment, the third connecting segment and several second connecting segments are polygonal.

[0009] Furthermore, a first connecting portion protrudes downward from the outer edge of the lower end face of the first connecting section, and the inner side wall of the first connecting portion has a thread; a second connecting portion protrudes upward from the inner edge of the upper end face of the second connecting section, and the outer side wall of the second connecting portion has a thread, and a sealing gasket is provided on the end face of the upper end of the second connecting section; a third connecting portion protrudes downward from the outer edge of the lower end face of the second connecting section, and the inner side wall of the third connecting portion has a thread; a fourth connecting portion protrudes upward from the inner edge of the upper end face of the third connecting section, and the outer side wall of the fourth connecting portion has a thread, and sealing gaskets are provided on the end faces of the upper and lower ends of the third connecting section.

[0010] Furthermore, the first connection portion is threadedly connected to the corresponding second connection portion or the fourth connection portion.

[0011] Furthermore, between each adjacent second connecting section, the second connecting portion is threadedly connected to the corresponding third connecting portion.

[0012] Furthermore, a plurality of rust-proof liquid tanks are formed on the inner wall of the first protection portion along the up-down direction.

[0013] Furthermore, a plurality of extension sleeves are provided, each having a through hole therethrough, an inner edge of the upper end face of the extension sleeve extending upward to form a second extension portion, an outer side wall of the second extension portion having a thread, an outer edge of the lower end face of the extension sleeve protruding downward to form a fifth connection portion, an inner side wall of the fifth connection portion having a thread; between each adjacent extension sleeve, the fifth connection portion is threadedly connected to the corresponding second extension portion.

[0014] Furthermore, the outer wall of the extension sleeve is polygonal, and the inner wall is provided with a plurality of anti-rust liquid grooves along the up and down directions. The extension sleeve is threadedly connected to the corresponding anti-rust cover through the second extension part, and the extension sleeve is threadedly connected to the corresponding first extension part through the fifth connection part.

[0015] The beneficial effects of the present invention are as follows: the accommodating cavity formed by the rust-proof sleeve and the rust-proof cover can isolate the stud and nut from the external environment, and in combination with the rust-proof liquid and the sealing gasket, the stud and nut can be kept in good working condition, avoiding rust and extending their service life. The components of the present invention all adopt a hexagonal outer wall, which is convenient for users to install by rotating with tools, and is convenient for assembly and disassembly and easy to maintain. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 Shown is a schematic diagram of the cross-sectional structure principle of the first embodiment of the present utility model.

[0017] Figure 2for Figure 1 The partial structural diagram in FIG shows the cross-sectional structure of the anti-rust sleeve.

[0018] Figure 3 Shown Figure 2 Top view of the overall structure of the middle anti-rust sleeve.

[0019] Figure 4 Shown Figure 2 Bottom view of the overall structure of the middle anti-rust sleeve.

[0020] Figure 5 for Figure 1 The partial structural diagram in FIG shows the cross-sectional structure of the rust-proof cover.

[0021] Figure 6 Shown Figure 5 Top view of the overall structure of the middle rust-proof cover.

[0022] Figure 7 Shown Figure 5 Bottom view of the overall structure of the middle rust-proof cover.

[0023] Figure 8 Shown is a schematic diagram of the cross-sectional structure principle of the second embodiment of the present utility model.

[0024] Figure 9 for Figure 8 The partial structural diagram in FIG shows the cross-sectional structure of the anti-rust sleeve.

[0025] Figure 10 Shown Figure 9 Top view of the overall structure of the middle anti-rust sleeve.

[0026] Figure 11 Shown Figure 9 Bottom view of the overall structure of the middle anti-rust sleeve.

[0027] Figure 12 Shown Figure 9 A top view of the overall structure of the second connecting section.

[0028] Figure 13 Shown is a schematic diagram of the cross-sectional structure principle of the third embodiment of the present utility model.

[0029] Figure 14 for Figure 13 The partial structural diagram in FIG shows the cross-sectional structure of the extension sleeve.

[0030] Figure 15 Shown Figure 14 A top view of the overall structure of the middle extension sleeve.

[0031] Figure 16 Shown Figure 14 Bottom view of the overall structure of the middle extension sleeve. DETAILED DESCRIPTION

[0032] The utility model discloses a bolt rust preventer. The first embodiment of the utility model is described in detail below with reference to the accompanying drawings.

[0033] like Figure 1 As shown, the screw rust preventer includes an anti-rust sleeve and an anti-rust cover 3. The anti-rust sleeve includes a first protection part 1 and a second protection part 2. The second protection part 2 is cylindrical. The first protection part 1 is fixed at the center of the top of the second protection part 2. A sealing gasket 4 is provided on the bottom end surface of the second protection part 2. In this embodiment, the sealing gasket 4 is made of rubber material. Figure 2 、 Figure 3 as well as Figure 4 As shown, the first protection part 1 and the second protection part 2 have a through hole that runs through the coaxial direction in the up-down direction. The inner diameter of the first protection part 1 is smaller than the inner diameter of the second protection part 2. The inner wall of the first protection part 1 is provided with a thread. The inner edge of the top end face of the first protection part 1 extends upward to form a first extension part 5. The inner and outer walls of the first extension part 5 are both provided with threads. The outer wall of the first protection part 1 is hexagonal, which is convenient for tool clamping and rotation. The inner wall of the first protection part 1 is provided with a plurality of anti-rust liquid tanks 6 in the up-down direction. Combined Figure 5 、 Figure 6 as well as Figure 7 As shown, the cross section of the rust-proof cover 3 is concave-shaped, the inner side wall is provided with a thread adapted to the first extension portion 5 , the outer side wall is hexagonal, and the rust-proof cover 3 is threadedly connected to the first extension portion 5 .

[0034] After the bolt is connected to the component, the nut and stud are exposed to the outside world, and the bottom surface of the nut contacts the component. When installing the bolt rust preventer, first, the first protective part 1 and the second protective part 2 are placed on the stud, and the inner wall of the first protective part 1 and the inner wall of the first extension part 5 are threadedly connected to the corresponding stud. The inner diameter of the through hole of the second protective part 2 is not less than the diameter of the nut, and the height of the through hole of the second protective part 2 is higher than the height of the nut. The staff can use a tool to connect with the hexagonal outer wall of the first protective part 1, rotate the first protective part 1 downward along the thread of the stud until the second protective part 2 completely covers the nut, and the sealing gasket 4 located on the bottom end face of the second protective part 2 is in close contact with the component surface. The staff injects rust preventive liquid from the first protective part 1. The rust preventive liquid enters the second protective part 2 through the rust preventive liquid tank 6 of the first protective part 1. The rust preventive liquid tank 6 facilitates the flow of the rust preventive liquid. The sealing gasket 4 is used to seal and prevent the rust preventive liquid from flowing out of the second protective part 2. The rust-proof liquid forms a protective film on the surface of the stud and nut, blocking moisture and other corrosive substances and preventing the stud and nut from rusting. The rust-proof cover 3 is threadedly connected to the first protective portion 1, so that a cavity that can fully accommodate the nut and stud is formed between the rust-proof cover 3, the first protective portion 1, the second protective portion 2, and the component, preventing the nut and stud from contacting the outside world.

[0035] The second embodiment of the present invention will be described in detail below with reference to the accompanying drawings. In this embodiment, except for the second protection portion 2 , the rest of the structure is the same as that of the first embodiment.

[0036] Combine Figure 8 and Figure 9 As shown, the lower part of the second protection portion 2 is composed of a first connecting segment 7, a third connecting segment 9 and a plurality of second connecting segments 8. The first connecting segment 7 is located above the third connecting segment 9, and each second connecting segment 8 is located between the first connecting segment 7 and the third connecting segment 9. Figure 10 and Figure 11 As shown, the cross-sections of the first connecting segment 7, the third connecting segment 9, and the plurality of second connecting segments 8 are approximately annular, and the outer walls of the first connecting segment 7, the third connecting segment 9, and the plurality of second connecting segments 8 are all hexagonal, which facilitates tool clamping and rotation. A first connecting portion 701 protrudes downward from the outer edge of the lower end face of the first connecting segment 7, and the inner side wall of the first connecting portion 701 has threads. Figure 12As shown, a second connecting portion 801 protrudes upward from the inner edge of the upper end surface of the second connecting segment 8. The outer wall of the second connecting portion 801 is threaded, and a sealing gasket 4 is provided on the upper end surface of the second connecting segment 8. A third connecting portion 802 protrudes downward from the outer edge of the lower end surface of the second connecting segment 8. The inner wall of the third connecting portion 802 is threaded. A fourth connecting portion 901 protrudes upward from the inner edge of the upper end surface of the third connecting segment 9. The outer wall of the fourth connecting portion 901 is threaded, and a sealing gasket 4 is provided on both the upper and lower end surfaces of the third connecting segment 9. In this embodiment, the sealing gasket 4 is made of rubber material. The first connecting portion 701 is threadedly connected to the corresponding second connecting portion 801 or fourth connecting portion 901. The second connecting portion 801 between adjacent second connecting segments 8 is threadedly connected to the corresponding third connecting portion 802, and the third connecting portion 802 is threadedly connected to the corresponding fourth connecting portion 901.

[0037] In actual applications, there are many situations, such as different nut models, spacers between the nut and the component, or multiple nuts connected to the stud, which may make the nut height uncertain. In this embodiment, the number of second connecting segments 8 can be flexibly set according to the height of the nut. Multiple second connecting segments 8 can be connected in sequence between the first connecting segment 7 and the third connecting segment 9 to extend the height of the second protective portion 2, so that the second protective portion 2 can completely cover the nut.

[0038] The third embodiment of the present invention is described in detail below with reference to the accompanying drawings. In this embodiment, the structure of each component is the same as that of the first and second embodiments described above.

[0039] like Figure 13 As shown, a plurality of extension sleeves 10 are provided, and the extension sleeves 10 have through holes extending in the vertical direction. Figure 14 、 Figure 15 as well as Figure 16 As shown, the extension sleeve 10 has a hexagonal outer wall and several anti-rust liquid grooves 6 defined along its inner wall in the vertical direction. The inner edge of the upper end surface of the extension sleeve 10 extends upward to form a second extension portion 11. The outer wall of the second extension portion 11 is threaded, and the extension sleeve 10 is threadedly connected to the corresponding anti-rust cover 3 via the second extension portion 11. A fifth connecting portion 1001 protrudes downward from the outer edge of the lower end surface of the extension sleeve 10. The inner wall of the fifth connecting portion 1001 is threaded, and the extension sleeve 10 is threadedly connected to the corresponding first extension portion 5 via the fifth connecting portion 1001. The inner diameter of the extension sleeve 10 is larger than the diameter of the stud, and the inner wall of the extension sleeve 10 is unthreaded.

[0040] In actual use, the height of the stud relative to the exposed portion of the nut is inconsistent. In this embodiment, after the first and second protective portions 1 and 2 are installed on the stud, the extension sleeve 10 is placed over the stud. Because the inner wall of the extension sleeve 10 is unthreaded and its inner diameter is larger than the diameter of the stud, the extension sleeve 10 falls under gravity and contacts the first extension portion 5 of the first protective portion 1. A worker uses a tool to grip and rotate the hexagonal outer wall of the extension sleeve 10, threading the extension sleeve 10 to the first extension portion 5 via the fifth connecting portion 1001. The number of extension sleeves 10 can be flexibly adjusted based on the height of the stud. Adjacent extension sleeves 10 are threadedly connected to the corresponding second extension portion 11 via the fifth connecting portion 1001. The top extension sleeve 10 is connected to the anti-rust cover 3 via the second extension portion 11. Workers can inject anti-rust liquid into the extension sleeve 10, and the anti-rust liquid tank 6 in the extension sleeve 10 facilitates the flow of the anti-rust liquid.

[0041] Of course, the above description is not a limitation of the present invention, and the present invention is not limited to the above examples. Changes, modifications, additions or substitutions made by technicians in this technical field within the essential scope of the present invention should also fall within the scope of protection of the present invention.

Claims

1. A bolt rust preventer, characterized in that: The invention comprises an anti-rust sleeve and an anti-rust cover (3), wherein the anti-rust sleeve comprises a first protection part (1) and a second protection part (2), one end of the second protection part (2) is fixedly connected to the first protection part (1), and a sealing gasket (4) is provided on the end surface of the other end; the first protection part (1) and the second protection part (2) both have a through hole, the inner diameter of the first protection part (1) is smaller than the inner diameter of the second protection part (2), and the inner side wall of the first protection part (1) is provided with a thread; the inner side edge of the end surface of the first protection part (1) extends upward to form a first extension part (5), the inner side wall and the outer side wall of the first extension part (5) are both provided with threads, the first extension part (5) is threadedly connected to the corresponding anti-rust cover (3), and the outer side wall of the first protection part (1) is polygonal.

2. The bolt rust preventer according to claim 1, characterized in that: The cross section of the rust-proof cover (3) is in a concave shape, a thread matching the first extension portion (5) is provided on the inner side wall, and the outer side wall is in a polygonal shape.

3. The bolt rust preventer according to claim 1, characterized in that: The second protection part (2) is cylindrical, the first protection part (1) is fixed to the top of the second protection part (2), and the through hole of the first protection part (1) is coaxial with the through hole of the second protection part (2).

4. The bolt rust preventer according to claim 3, characterized in that: The second protection portion (2) comprises a first connecting segment (7), a third connecting segment (9) and a plurality of second connecting segments (8) in an annular shape, wherein the first connecting segment (7) is located above the third connecting segment (9), and each of the second connecting segments (8) is located between the first connecting segment (7) and the third connecting segment (9), and the outer walls of the first connecting segment (7), the third connecting segment (9) and the plurality of second connecting segments (8) are polygonal.

5. The bolt rust preventer according to claim 4, characterized in that: A first connecting portion (701) protrudes downward from the outer edge of the lower end surface of the first connecting section (7), and the inner side wall of the first connecting portion (701) has a thread; A second connecting portion (801) protrudes upward from the inner edge of the upper end surface of the second connecting section (8), the outer side wall of the second connecting portion (801) has a thread, and a sealing gasket (4) is provided on the upper end surface of the second connecting section (8); A third connecting portion (802) protrudes downward from the outer edge of the lower end surface of the second connecting section (8), and the inner side wall of the third connecting portion (802) has a thread; A fourth connecting portion (901) protrudes upward from the inner edge of the upper end surface of the third connecting section (9), and the outer wall of the fourth connecting portion (901) has a thread. Sealing gaskets (4) are provided on the end surfaces of the upper and lower ends of the third connecting section (9).

6. The bolt rust preventer according to claim 5, characterized in that: The first connection portion (701) is threadedly connected to the corresponding second connection portion (801) or the fourth connection portion (901).

7. The bolt rust preventer according to claim 5, characterized in that: Between each adjacent second connecting section (8), the second connecting portion (801) is threadedly connected to the corresponding third connecting portion (802).

8. The bolt rust preventer according to claim 1, characterized in that: The inner wall of the first protection portion (1) is provided with a plurality of rust-proof liquid grooves (6) in the up-down direction.

9. The bolt rust preventer according to claim 1, characterized in that: A plurality of extension sleeves (10) are provided, wherein the extension sleeves (10) have a through hole extending therethrough, the inner edge of the upper end surface of the extension sleeve (10) extends upward to form a second extension portion (11), the outer side wall of the second extension portion (11) has a thread, and the outer side edge of the lower end surface of the extension sleeve (10) protrudes downward to form a fifth connection portion (1001), the inner side wall of the fifth connection portion (1001) has a thread; between each adjacent extension sleeve (10), the fifth connection portion (1001) is connected to the threaded connection of the corresponding second extension portion (11).

10. The bolt rust preventer according to claim 9, characterized in that: The outer wall of the extension sleeve (10) is polygonal, and a plurality of anti-rust liquid grooves (6) are provided on the inner wall along the up-down direction. The extension sleeve (10) is threadedly connected to the corresponding anti-rust cover (3) through the second extension portion (11), and the extension sleeve (10) is threadedly connected to the corresponding first extension portion (5) through the fifth connection portion (1001).

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