A rust-proof bolt with self-locking capability

Abstract

A self-locking rust-proof bolt includes a nut, an insert section, and a sealing gasket. The sealing gasket is movably connected to the lower end of the nut. The lower end of the nut has a double-threaded self-locking structure, and the upper part of the nut has a water-proof and rust-proof structure. This self-locking rust-proof bolt is installed by screwing the lower half of the bolt into the mounting component using a wrench to rotate the nut. Then, the first nut is first rotated forward through the lower thread rod and then rotated backward through the upper thread rod, leaving the first nut outside the upper thread rod. Similarly, the second nut is installed in the same way, but this time it is left outside the lower thread rod. The first nut is restricted by the thread direction of the upper thread rod, and the second nut is restricted by the thread direction of the lower thread rod. After the rust-proof bolt is installed, the two oppositely threaded rods will lock together using the outer nuts, making it difficult to loosen due to unidirectional rotation, thus achieving the self-locking function of the rust-proof bolt.

Description

Technical Field

[0001] This utility model relates to the field of bolt technology, and in particular to a rust-proof bolt with self-locking capability. Background Technology

[0002] Bolts have many names, and people may use different terms. Some call them screws, some call them bolt nails, and some call them fasteners. Although there are many names, they all mean the same thing: a bolt. Bolt is the general term for fastener. A bolt is a tool that uses the physical and mathematical principles of inclined planes, circular rotation, and friction to gradually tighten objects and machine parts.

[0003] For example, a rust-proof bolt with self-locking capability, authorized by announcement number CN213419624U, uses a control mechanism to pull out a short rod through a slot, and the nut is rotated by a curved plate, which increases the hand position and makes it easier to tighten the bolt, reducing the difficulty of use, and can cope with special situations, making it easy to promote.

[0004] However, the aforementioned self-locking rust-proof bolts still have other problems in use. For example, the self-locking rust-proof bolts use interlocking blocks to clamp and restrict the bolt's reverse rotation, but the overall interlocking and clamping structure is still connected to the bolt itself. That is to say, when the bolt is screwed into the part that needs to be fixed, when it is screwed in the reverse direction, the bolt will drive the interlocking blocks to be rotated upwards and removed at the same time, making it difficult to achieve a true self-locking effect. Therefore, the self-locking ability of existing self-locking rust-proof bolts is limited.

[0005] Furthermore, existing self-locking rust-proof bolts rely on a protective layer to adhere tightly to the connection between the threaded rod and the threaded opening during rust prevention. However, the sealing range is always limited. The bolt has a polygonal nut on top that is easy to tighten, and the nut is exposed and lacks a protective structure. Therefore, the most vulnerable spot for a bolt to rust is the exposed, unprotected pitted corner of the nut. As a result, the rust prevention effect of self-locking rust-proof bolts is not comprehensive enough. Summary of the Invention

[0006] This invention aims to solve the problems existing in the prior art by providing a rust-proof bolt with self-locking capability that can achieve efficient self-locking and comprehensive rust prevention.

[0007] The technical solution adopted by this utility model to solve its technical problem is as follows:

[0008] Design a rust-proof bolt with self-locking capability, including a nut, an insert section and a sealing gasket, wherein the sealing gasket is movably connected to the lower end of the nut, the lower end of the nut is provided with a bolt double-thread self-locking structure, and the upper part of the nut is provided with a bolt water-proof and rust-proof structure.

[0009] Further improvements include an upper screw and a lower screw in the bolt double-threaded self-locking structure. The upper screw is fixedly connected to the lower end of the nut, and a connecting pipe is fixedly connected to the lower end of the upper screw. The lower screw is fixedly connected to the lower end of the connecting pipe. A first nut is threadedly connected to the outer wall of the upper screw, and a second nut is threadedly connected to the outer wall of the lower screw.

[0010] To further improve the design, the lower surface of the first nut is positioned opposite the top surface of the second nut.

[0011] Further improvements include a pre-drilled hole and a fitting protrusion in the bolt waterproof and rust-proof structure. The pre-drilled hole is fixedly opened at the top of the nut, and a threaded head is threaded to the inner side of the pre-drilled hole. An arc-shaped plug is fixedly connected to the top of the threaded head. The fitting protrusion is fixedly connected to the lower end of the nut, and a mating layer is fixedly connected to the top of the inner wall of the sealing gasket.

[0012] Further improvements include that the upper surface of the mating layer abuts against the lower end of the mating protrusion, and the lower end of the arc-shaped plug is movably connected to the upper surface of the nut.

[0013] Further improvements include a fixed connection between the insertion section and the bottom end of the lower screw, a friction layer fixedly connected to the outer wall of the insertion section, and a self-tapping end fixedly connected to the bottom end of the insertion section.

[0014] The beneficial effects of this utility model are as follows: In this utility model, the lower half of the bolt is screwed into the installation component by rotating the nut with a wrench. Then, the first nut is first rotated forward through the lower screw and then rotated in the opposite direction through the upper screw, leaving the first nut on the outside of the upper screw. Similarly, the second nut is installed in the same way, but the second nut is left on the outside of the lower screw. The first nut is restricted by the thread direction of the upper screw, and the second nut is restricted by the thread direction of the lower screw. After the rust-proof bolt is installed, the two oppositely threaded rods will lock each other with the outer nut, making it difficult to loosen due to rotation in one direction. This achieves the self-locking function of the rust-proof bolt, and the self-locking effect is achieved by restricting the rotation of the nut through the opposite threads.

[0015] The reserved hole is a threaded groove carved downwards from the top of the nut. The inner thread of the reserved hole is connected to a threaded head, which can be rotated and screwed into the reserved hole along with the arc-shaped plug above it. The arc-shaped plug is a rubber ball structure with a semi-circular top. This semi-circular rubber arc-shaped plug at the top of the nut guides rainwater to slide off the outer slope. The mating layer is made of rubber material with the curvature facing inwards. Therefore, the mating layer and the mating protrusion at the bottom of the nut can fit tightly together, reducing the intrusion of rainwater into the bolt and improving the waterproof effect. This, in turn, improves the rust prevention ability of the self-locking rust-proof bolt. Attached Figure Description

[0016] Figure 1This is a three-dimensional structural diagram of the present invention;

[0017] Figure 2 for Figure 1 A frontal sectional view;

[0018] Figure 3 for Figure 2 A schematic diagram of the top sectional view;

[0019] Figure 4 for Figure 2 Enlarged sectional view of section A in the middle;

[0020] Figure 5 for Figure 2 Enlarged sectional view of section B;

[0021] Figure 6 for Figure 2 Enlarged cross-sectional view of section C.

[0022] Explanation of reference numerals in the attached figures: 1. Nut, 2. Insertion section, 3. Sealing gasket, 4. Bolt double-threaded self-locking structure, 41. Upper screw, 42. Connecting tube, 43. Lower screw, 44. First nut, 45. Second nut, 51. Self-tapping end, 52. Friction layer, 6. Bolt water-proof and rust-proof structure, 61. Arc-shaped plug, 62. Threaded head, 63. Reserved hole, 64. Fitting protrusion, 65. Fitting layer. Detailed Implementation

[0023] The present invention will be further described below with reference to the accompanying drawings:

[0024] See attached document Figure 1-6 In this embodiment, a rust-proof bolt with self-locking capability includes a nut 1, an insertion section 2, and a sealing gasket 3. The sealing gasket 3 is movably connected to the lower end of the nut 1. The sealing gasket 3 is a round rubber gasket with a hollowed-out center. The sealing gasket 3 can be fitted between the lower end of the nut 1 and the part to be bolted. The sealing gasket 3 improves the fit and sealing capability. The lower end of the nut 1 is provided with a bolt double-thread self-locking structure 4, and the upper part of the nut 1 is provided with a bolt water-proof and rust-proof structure 6.

[0025] The bolt double-threaded self-locking structure 4 includes an upper screw 41 and a lower screw 43. The upper screw 41 is fixedly connected to the lower end of the nut 1 and is directly welded to the lower end of the nut 1. Then, the lower screw 43 is welded to the lower end of the upper screw 41 using a smooth round connecting pipe 42. The lower end of the upper screw 41 is fixedly connected to the connecting pipe 42, and the lower screw 43 is fixedly connected to the lower end of the connecting pipe 42. The upper screw 41 and the lower screw 43 are made of stainless steel of the same specification, but the thread direction of the lower screw 43 is opposite to that of the upper screw 41. When the anti-rust bolt is installed, the lower half of the bolt is first screwed into the installation part by turning the nut 1 with a wrench. Then, the first nut 44 is first turned forward through the lower screw 43. The upper screw 42 is rotated in the opposite direction and screwed in, leaving the first nut 44 outside the upper screw 41. Similarly, the second nut 45 is installed in the same way, but it is left outside the lower screw 43. The first nut 44 is restricted by the thread direction of the upper screw 41, and the second nut 45 is restricted by the thread direction of the lower screw 43. After the anti-rust bolt is installed, the two opposite threaded rods will lock each other with the outer nuts, making it difficult to loosen due to rotation in one direction, thus achieving the self-locking function of the anti-rust bolt. The outer wall of the upper screw 41 is threaded with the first nut 44, and the outer wall of the lower screw 43 is threaded with the second nut 45. The lower surface of the first nut 44 and the top of the second nut 45 are set opposite to each other.

[0026] The bolt waterproof and rust-proof structure 6 includes a pre-drilled hole 63 and a fitting protrusion 64. The pre-drilled hole 63 is fixedly opened at the top of the nut 1. The pre-drilled hole 61 is a threaded groove carved downward from the top of the nut 1. A threaded head 62 is threadedly connected to the inner side of the pre-drilled hole 61. The threaded head 62 can rotate and screw the arc-shaped plug 61 above it into the pre-drilled hole 61. The arc-shaped plug 61 adopts a rubber ball structure with a semi-circular top. In this way, the rubber semi-circular arc-shaped plug 61 placed at the top of the nut 1 can guide rainwater to slide down the outer slope. An arc-shaped plug 61 is fixedly connected to the top of the threaded head 62, and a fitting protrusion 64 is fixedly connected to the lower end of the nut 1. A mating layer 65 is fixedly connected to the top of the inner wall of the sealing gasket 3. The mating layer 65 is made of rubber material with an inward curvature. Therefore, the mating layer 65 and the fitting protrusion 64 at the lower end of the nut 1 can be tightly attached together, reducing the intrusion of rainwater into the bolt and improving the waterproof effect. The upper surface of the mating layer 65 abuts against the lower end of the fitting protrusion 64, and the lower end of the arc-shaped plug 61 is movably connected to the upper surface of the nut 1.

[0027] The insertion section 2 is fixedly connected to the bottom end of the lower screw 43. The outer wall of the insertion section 2 is fixedly connected to a friction layer 52. The friction layer 52 is made of steel with a rough surface treatment. The insertion section 2 can use the sharp self-tapping end 51 at the bottom end to create a self-tapping hole for some wooden materials that lack threaded holes, which facilitates the installation of anti-rust bolts. The outer wall of the friction layer 52 can be tightly attached to the inner wall of the component where the anti-rust bolt is installed, and the frictional clamping force is used to reduce the loosening of the bolt. The bottom end of the insertion section 2 is fixedly connected to a self-tapping end 51.

[0028] Working principle:

[0029] Self-locking rust-proof bolts are used inside some mechanical parts that need to be connected and installed, serving as bolt connections and fixation.

[0030] The sealing gasket 3 is a round rubber gasket with a hollow center. The sealing gasket 3 can be fitted between the lower end of the nut 1 and the part that needs to be bolted together, thereby improving the sealing ability.

[0031] The upper screw 41 is directly welded to the lower end of the nut 1, and the lower screw 43 is welded to the lower end of the upper screw 41 using the smooth round connecting pipe 42. The upper screw 41 and the lower screw 43 are made of stainless steel of the same specifications, but the thread direction of the lower screw 43 is opposite to that of the upper screw 41. When the anti-rust bolt is installed, the lower half of the bolt is first screwed into the installation part by turning the nut 1 with a wrench. Then the first nut 44 is first rotated forward through the lower screw 43 and then rotated in the opposite direction through the upper screw 42. The first nut 44 is left outside the upper screw 41. Similarly, the second nut 45 is installed in the same way, but the second nut 45 is left outside the lower screw 43. The first nut 44 is restricted by the thread direction of the upper screw 41, and the second nut 45 is restricted by the thread direction of the lower screw 43. After the anti-rust bolt is installed, the two opposite threaded rods will lock each other with the outer nuts, making it difficult to loosen by rotation in one direction, thus realizing the self-locking function of the anti-rust bolt.

[0032] The reserved hole 61 is a threaded groove carved downward from the top of the nut 1. The inner thread of the reserved hole 61 is connected to the threaded head 62. The threaded head 62 can be rotated and screwed into the reserved hole 61 with the upper arc-shaped plug 61. The arc-shaped plug 61 adopts a rubber ball structure with a semi-circular top. In this way, the rubber semi-circular arc-shaped plug 61 placed at the top of the nut 1 can guide rainwater to slide down the outer slope. The mating layer 65 is made of rubber material with the arc facing inward. Therefore, the mating layer 65 and the mating protrusion 64 at the lower end of the nut 1 can be tightly attached together, reducing the intrusion of rainwater into the bolt and improving the waterproof effect. This, in turn, improves the rust prevention ability of the self-locking rust-proof bolt.

[0033] The friction layer 52 is made of steel with a rough surface treatment. The insertion section 2 can use the sharp self-tapping end 51 at the bottom to create self-tapping holes in some wooden materials that lack threaded holes, which facilitates the installation of anti-rust bolts. The outer wall of the friction layer 52 can be closely attached to the inner wall of the component where the anti-rust bolt is installed, and the frictional clamping force is used to reduce the loosening of the bolt.

[0034] Although the present invention has been illustrated and described with reference to preferred embodiments, those skilled in the art should understand that various changes in form and detail are possible within the scope of the claims.

Claims

1. A rust-resistant bolt with self-locking capability, comprising a nut (1), an insert section (2), and a sealing gasket (3), wherein the sealing gasket (3) is movably connected to the lower end of the nut (1), characterized in that: The lower end of the nut (1) is provided with a bolt double thread self-locking structure (4), and the upper part of the nut (1) is provided with a bolt water-proof and rust-proof structure (6).

2. The rust-proof bolt with self-locking capability according to claim 1, characterized in that: The bolt double-thread self-locking structure (4) includes an upper screw (41) and a lower screw (43). The upper screw (41) is fixedly connected to the lower end of the nut (1). The lower end of the upper screw (41) is fixedly connected to a connecting pipe (42). The lower screw (43) is fixedly connected to the lower end of the connecting pipe (42). The outer wall of the upper screw (41) is threaded with a first nut (44), and the outer wall of the lower screw (43) is threaded with a second nut (45).

3. The rust-proof bolt with self-locking capability according to claim 2, characterized in that: The lower surface of the first nut (44) is positioned opposite the top end of the second nut (45).

4. The rust-proof bolt with self-locking capability according to claim 1, characterized in that: The bolt waterproof and rust-proof structure (6) includes a reserved hole (63) and a fitting protrusion (64). The reserved hole (63) is fixedly opened at the top of the nut (1). The inner side of the reserved hole (63) is threaded with a threaded head (62). The top of the threaded head (62) is fixedly connected with an arc-shaped plug (61). The fitting protrusion (64) is fixedly connected to the lower end of the nut (1). The top of the inner wall of the sealing gasket (3) is fixedly connected with a mating layer (65).

5. The rust-proof bolt with self-locking capability according to claim 4, characterized in that: The upper surface of the mating layer (65) abuts against the lower end of the mating protrusion (64), and the lower end of the arc-shaped plug (61) is movably connected to the upper surface of the nut (1).

6. The rust-proof bolt with self-locking capability according to claim 2, characterized in that: The insertion section (2) is fixedly connected to the bottom end of the lower screw (43), the outer wall of the insertion section (2) is fixedly connected to a friction layer (52), and the bottom end of the insertion section (2) is fixedly connected to a self-tapping end (51).

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