Rust-proof nut

Abstract

The utility model discloses a rust-proof nut, which relates to the technical field of fasteners, and adopts the technical scheme that the rust-proof nut comprises a nut body, a threaded hole is formed in the center of the nut body in a penetrating manner, internal threads which are spirally distributed are arranged on the inner wall of the threaded hole, and a foldable sealing ring is arranged on the outer surface of the nut body; according to the sealing nut, the sealing ring is arranged on the nut body, when the nut is installed, the sealing ring is turned upwards, the nut is screwed, the nut abuts against a component, at the moment, the sealing ring is turned downwards, and then the sealing ring can seal a gap between the component and the nut. After the nut and a component are installed, the sealing piece is covered with the threaded hole, then rainwater and the like can be prevented from falling into the threaded hole to cause rusting of the internal thread, and the nut is made of brass, so that the nut is not prone to rusting and has longer service life.

Description

Technical Field

[0001] The utility model relates to the technical field of fasteners, and more specifically, to a rust-proof nut. Background Art

[0002] A nut is a mechanical part that is usually used with a bolt or a screw to fasten the connection. The nut has a hole in the center and threads on the inside of the hole. The threads mesh with the threads of the bolt or screw to fix the two parts. Nuts are usually made of metal, including low-carbon steel, stainless steel, copper, etc. There are also nuts made of non-metallic materials such as nylon, plastic, ceramic, etc. Their shape is mostly hexagonal. Nuts are widely used in mechanical manufacturing, maintenance and many other fields.

[0003] After the nut is assembled, the existing nut cannot solve the waterproof problem. The surface where the nut and the component are in contact is prone to water seepage, causing the thread of the nut and the component to rust, thus affecting the service life of the nut.

[0004] Therefore, a new solution needs to be proposed to solve this problem. Utility Model Content

[0005] The purpose of the utility model is to provide a rust-proof nut in order to solve the above-mentioned problem.

[0006] The above technical purpose of the utility model is achieved through the following technical scheme: a rust-proof nut, including a nut body, a threaded hole is set through the center of the nut body, a spirally distributed internal thread is set on the inner wall of the threaded hole, a foldable sealing ring is set on the outer surface of the nut body, and a sealing member covering the threaded hole is set on the nut body.

[0007] The utility model is further configured as follows: an upper groove and a lower groove are provided on the outer surface of the nut body, the sealing ring comprises a connecting portion installed in the lower groove, a folding portion is fixedly connected to a side of the connecting portion away from the nut body, and the folding portion is arranged in an arc shape.

[0008] The utility model is further configured as follows: the sealing member comprises a limiting ring sleeved in the upper groove, the limiting ring is fixedly connected with a connecting belt, and a sealing cover is fixedly connected to a side of the connecting belt away from the limiting ring.

[0009] The utility model is further configured as follows: a sink groove is arranged at the center of the sealing cover, and an annular protrusion for clamping with the outer surface of the nut body is fixedly connected around the sealing cover.

[0010] The utility model is further configured as follows: a guide surface is arranged at one end of the threaded hole close to the sealing ring.

[0011] The utility model is further configured as follows: the sealing ring and the sealing element are both made of rubber material, and the nut body is made of brass.

[0012] In summary, the utility model has the following beneficial effects:

[0013] By arranging a sealing ring on the nut body, the sealing ring is folded upward when the nut is installed, and the nut is twisted to make the nut abut against the component. At this time, the sealing ring is folded downward, so that the sealing ring can fill the gap between the component and the nut, improve the sealing of the connection between the two, and thus play a certain waterproof role. The sealing ring will abut against the surface of the component to increase the friction between the two and prevent the nut body from slipping and rotating. When the nut and the component are installed, the seal is covered with the threaded hole to prevent rainwater from falling into the threaded hole and causing the internal thread to rust, thereby making the nut have a longer service life. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0015] Figure 2 It is a structural schematic diagram of the nut body in the utility model;

[0016] Figure 3 It is a cross-sectional view of the nut body in the utility model.

[0017] Figure numerals: 1. nut body; 2. threaded hole; 3. internal thread; 4. connecting portion; 5. folding portion; 6. upper groove; 7. lower groove; 8. limiting ring; 9. connecting belt; 10. sealing cover; 11. recessed groove; 12. annular protrusion; 13. guide surface. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] like Figure 1 and Figure 3As shown, a rust-proof nut includes a nut body 1, which is made of brass. Brass has strong corrosion resistance and excellent processability, is easy to produce and manufacture, and at the same time makes the nut body 1 have a long service life. A threaded hole 2 is set through the center of the nut body 1, and a spirally distributed internal thread 3 is set on the inner wall of the threaded hole 2. The internal thread 3 in the threaded hole 2 cooperates with the external thread of the component to achieve the extrusion and tightening of the nut. A foldable sealing ring is set on the outer surface of the nut body 1. When the nut is installed, the sealing ring is folded upward, and the nut is twisted to make the nut abut against the component. At this time, the sealing ring is folded downward, and then the sealing ring can fill the gap between the component and the nut, improve the sealing of the connection between the two, and then play a certain waterproof role. The sealing ring will abut against the surface of the component, increase the friction between the two, and prevent the nut body 1 from slipping and rotating. A guide surface 13 is set at one end of the threaded hole 2 close to the sealing ring, so as to facilitate the clamping of the nut and the component.

[0020] like Figure 2 and Figure 3 As shown, the outer surface of the nut body 1 is provided with an upper groove 6 and a lower groove 7, and the sealing ring includes a connecting portion 4 installed in the lower groove 7, the connecting portion 4 is bonded to the lower groove 7, and a folding portion 5 is fixedly connected to the side of the connecting portion 4 away from the nut body 1, and the folding of the folding portion 5 plays a shielding role for the gap between the nut and the component. The folding portion 5 is arranged in an arc shape, so that the folding portion 5 can play a role similar to a suction cup, which can not only ensure the sealing between the nut body 1 and the component, but also strengthen the connection between the nut body 1 and the component, so that the nut body 1 is not easy to slip and rotate.

[0021] like Figure 1 and Figure 2 As shown, a seal covering the threaded hole 2 is provided on the nut body 1. When the nut and the component are installed, the seal is covered with the threaded hole 2 to prevent rainwater from falling into the threaded hole 2 and causing the internal thread 3 to rust, so that the nut has a longer service life. The seal includes a limiting ring 8 fitted in the upper groove 6, and a connecting belt 9 is fixedly connected to the limiting ring 8. A sealing cover 10 is fixedly connected to the side of the connecting belt 9 away from the limiting ring 8, and the sealing cover 10 is installed on the nut body 1 through the limiting ring 8.

[0022] like Figure 1As shown, a recessed groove 11 is provided at the center of the sealing cover 10. When the nut body 1 and the component thread are tightened, the external thread of the component will pass through the nut body 1, thereby ensuring the contact area between the nut body 1 and the component, making the connection between the nut body 1 and the component more secure, and the protruding part of the component will enter the recessed groove 11. The recessed groove 11 protects the internal thread 3 of the component and the nut body 1. An annular protrusion 12 for snapping with the outer surface of the nut body 1 is fixedly connected around the sealing cover 10. When snapping, the annular protrusion 12 on the sealing cover 10 will abut against the outer side of the nut body 1, thereby increasing the contact area between the sealing cover 10 and the nut body 1, making the installation of the sealing cover 10 more stable. At the same time, the sealing cover 10 can protect the nut body 1 and prevent it from being damaged by collision with the outside.

[0023] like Figure 1 As shown, the sealing ring and the sealing member are both made of rubber material, which is elastic and wear-resistant, and can provide good protection for the nut body 1, thereby increasing the friction between the nut body 1 and the components, making it less likely to slip and rotate.

[0024] The above is only a preferred embodiment of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A rust-proof nut, characterized in that: The invention comprises a nut body (1), a threaded hole (2) is provided through the center of the nut body (1), a spirally distributed internal thread (3) is provided on the inner wall of the threaded hole (2), a foldable sealing ring is provided on the outer surface of the nut body (1), and a sealing member covering the threaded hole (2) is provided on the nut body (1).

2. The rust-proof nut according to claim 1, characterized in that: The outer surface of the nut body (1) is provided with an upper groove (6) and a lower groove (7); the sealing ring comprises a connecting portion (4) installed in the lower groove (7); a folding portion (5) is fixedly connected to a side of the connecting portion (4) away from the nut body (1); and the folding portion (5) is arranged in an arc shape.

3. The rust-proof nut according to claim 2, characterized in that: The sealing member comprises a limiting ring (8) sleeved in the upper groove (6), a connecting belt (9) being fixedly connected to the limiting ring (8), and a sealing cover (10) being fixedly connected to a side of the connecting belt (9) away from the limiting ring (8).

4. The rust-proof nut according to claim 3, characterized in that: A recessed groove (11) is arranged at the center of the sealing cover (10), and an annular protrusion (12) for clamping with the outer surface of the nut body (1) is fixedly connected to the periphery of the sealing cover (10).

5. The rust-proof nut according to claim 4, characterized in that: A guide surface (13) is provided at one end of the threaded hole (2) close to the sealing ring.

6. The rust-proof nut according to claim 1, characterized in that: The sealing ring and the sealing element are both made of rubber material, and the nut body (1) is made of brass.

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