A standard nut

Abstract

The utility model discloses a standard nut relates to connecting piece, and its technical scheme main points are: including body and cap, is seted up internally threaded hole on the body, and the cap is screwed in internally threaded hole, and the middle part of cap is seted up through -hole, and the inner peripheral wall of through -hole is equipped with sealing washer, and the inside diameter of sealing washer is less than the small diameter of threaded hole. The utility model when nut is screwed on bolt, need not the end of nut without cap as head end and screw on bolt, when nut is screwed in place, sealing washer is deformed under the action of bolt resistance, and sealing washer will produce an internal stress of overcoming deformation under the force of own material, and the internal stress can make sealing washer better fill the gap between bolt and nut, so that the moisture and air of outside are not easy to enter the gap of nut and bolt contact, so that threaded hole is not easy to produce corrosion because of contacting moisture and air, and the body made of brass has better corrosion resistance, thereby can better prolong the service life of body.

Description

Technical Field

[0001] This utility model relates to connectors, and more specifically, to a standard nut. Background Technology

[0002] A nut is a fastener that is screwed onto a bolt or threaded rod. The main function of a nut is to generate a preload or clamping force through the interaction of its threads with fasteners such as bolts or threaded rods, thereby securing two or more parts.

[0003] In actual production, some nuts are used in outdoor working environments, which can cause them to rust due to sun and rain. When rust occurs on the internal threads of the nut, it makes subsequent disassembly of the nut more inconvenient.

[0004] Therefore, a new solution is needed to address this problem. Utility Model Content

[0005] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a standard nut.

[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a standard nut, comprising a body with a threaded hole and a cap mounted on the body, wherein the body has an internal threaded hole coaxial with the threaded hole, the cap is threaded into the internal threaded hole, and a circular hole through which a bolt can pass is provided in the middle of the cap, and a sealing ring for abutting the bolt is provided on the inner peripheral wall of the circular hole, wherein the inner diameter of the sealing ring is smaller than the minor diameter of the threaded hole.

[0007] The present invention is further configured such that: the cap includes a hexagonal piece and a ring post located in the internal threaded hole, the sealing ring is installed on the ring post, an oil storage groove is formed on the inner wall of the ring post, and a plurality of oil outlet holes communicating with the oil storage groove are formed on the sealing ring.

[0008] The present invention is further configured such that the top surface of the hexagonal piece has a circular hole that communicates with the oil storage tank.

[0009] The present invention is further configured such that the diameter of the circular hole decreases as the distance between the hole and the oil storage tank increases.

[0010] The present invention is further configured such that an injection groove is provided on the side of the hexagonal piece facing the main body.

[0011] The present invention is further configured such that the depth of the internal threaded hole is less than one-quarter of the height of the body.

[0012] The present invention is further configured such that: the body is made of brass and the cap is made of PVC.

[0013] In summary, this utility model has the following beneficial effects: When screwing the nut onto the bolt, the end of the nut without the cap needs to be screwed onto the bolt as the head end. When the nut is screwed in place, the sealing ring deforms under the action of the bolt. Under the force of its own material, the sealing ring generates an internal stress to overcome the deformation. This internal stress allows the sealing ring to better fill the gap between the bolt and the nut, making it difficult for external moisture and air to enter the gap between the nut and the bolt. This also makes the threaded hole less prone to corrosion due to contact with moisture and air, thus preventing the nut from sticking to the bolt due to corrosion. This makes the subsequent disassembly of the nut easier. The cap, which is installed on the body through a threaded connection, also makes the connection between the cap and the body relatively tight. In the outdoor working environment of the nut, the cap is not easy to separate from the body, thus ensuring the protective function of the cap on the body. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a cross-sectional view of the present invention; Figure 3 This is a schematic diagram of the structure of the cap in this utility model.

[0015] In the diagram: 1. Body; 2. Internal threaded hole; 3. Through hole; 4. Sealing ring; 5. Hexagonal plate; 6. Ring post; 7. Oil reservoir; 8. Oil outlet; 9. Round hole; 10. Glue injection groove. Detailed Implementation

[0016] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0017] A standard nut, such as Figure 1 and Figure 3As shown, the device includes a body 1 with a threaded hole and a cap mounted on the body 1. The body 1 has an internal threaded hole 2 coaxial with the threaded hole. The cap is threaded into the internal threaded hole 2. A through hole 3, through which a bolt can pass, is located in the center of the cap. A sealing ring 4, for contacting the bolt, is provided on the inner circumferential wall of the through hole 3. The inner diameter of the sealing ring 4 is smaller than the minor diameter of the threaded hole. The sealing ring 4 contains anti-rust oil. When the nut is tightened onto the bolt, the end of the nut without the cap is used as the head end and tightened onto the bolt. When the nut is fully tightened, the sealing ring 4 deforms under the contact of the bolt. The sealing ring 4, due to the action of its own material... When force is applied, an internal stress is generated to overcome the deformation. This internal stress allows the sealing ring 4 to better fill the gap between the bolt and the nut, making it difficult for external moisture and air to enter the gap between the nut and the bolt. This also makes the threaded hole less prone to corrosion due to contact with moisture and air, thus preventing the nut from sticking to the bolt due to corrosion. This makes it easier to disassemble the nut later. The cap, which is installed on the body 1 through a threaded connection, also makes the connection between the cap and the body 1 relatively tight. In the outdoor working environment, the cap is not easy to separate from the body 1, thus ensuring the protective function of the cap on the body 1.

[0018] like Figure 2 and Figure 3 As shown, the cap includes a hexagonal plate 5 and a ring post 6 located in the internal threaded hole 2. The cap is made of PVC material, with the hexagonal plate 5 and the ring post 6 integrally formed. The sealing ring 4 is installed on the ring post 6, and an oil reservoir 7 is formed on the inner wall of the ring post 6. Several oil outlet holes 8 are formed on the sealing ring 4, which communicate with the oil reservoir 7. The oil reservoir 7 allows the rust-preventive oil to be effectively contained within the nut. When the sealing ring 4 comes into contact with the bolt and is deformed due to pressure from the outer wall of the bolt, the space in the sealing ring 4 for containing the rust-preventive oil decreases, allowing the rust-preventive oil to overflow through the oil outlet holes 8. The rust-preventive oil, due to its fluidity, can effectively fill the gap between the nut and the bolt, allowing external air to escape. The inability to enter the gap between the nut and bolt further ensures the sealing effect, making the connection between the nut and bolt less prone to corrosion. The top surface of the hexagonal plate 5 has a round hole 9 that communicates with the oil reservoir 7. During the long-term use of the nut, the internal rust-preventive oil will be depleted. At this time, people can inject rust-preventive oil into the round hole 9 to replenish the rust-preventive oil in the oil reservoir 7, so as to ensure the tightness between the nut and bolt and improve the service life of the nut. The diameter of the round hole 9 decreases as the distance between it and the oil reservoir 7 increases. Since the rust-preventive oil has a certain degree of adhesion, the above-mentioned round hole 9 makes it difficult for the rust-preventive oil injected through the round hole 9 to overflow backward from the round hole 9.

[0019] like Figure 2 and Figure 3As shown, a glue injection groove 10 is provided on the side of the hexagonal piece 5 facing the body 1. Specifically, after the cap is integrally formed, the material of the hexagonal piece 5 is a round piece. After the ring post 6 is screwed into the inner threaded hole 2, the round piece is glued to the body 1 through the glue injection groove 10. Then, the excess edges of the round piece are removed by grinding or cutting to form a hexagonal piece 5 that overlaps with the body 1. The opening of the glue injection groove 10 allows glue to be injected into the glue injection groove 10 to fix the hexagonal piece 5 to the body 1. This makes it difficult for the ring post 6 to fall out of the inner threaded hole 2 during subsequent use, thus better protecting the body 1. The depth of the inner threaded hole 2 is less than one-quarter of the height of the body 1. This setting ensures sufficient connection strength between the ring post 6 and the body 1, while also making it less likely for the opening of the inner threaded hole 2 to affect the strength of the body 1. The body 1 is made of brass. Brass has good corrosion resistance. The body 1 made of brass is not prone to rust, thus extending the service life of the body 1.

[0020] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A standard nut, characterized in that: The device includes a body (1) with a threaded hole and a cap mounted on the body (1). The body (1) has an internal threaded hole (2) coaxial with the threaded hole. The cap is threaded into the internal threaded hole (2). The cap has a through hole (3) in the middle that can be passed through by a bolt. The inner circumferential wall of the through hole (3) is provided with a sealing ring (4) for abutting the bolt. The inner diameter of the sealing ring (4) is smaller than the minor diameter of the threaded hole.

2. A standard nut according to claim 1, characterized in that: The cap includes a hexagonal piece (5) and a ring post (6) located in the internal threaded hole (2). The sealing ring (4) is installed on the ring post (6). An oil storage groove (7) is provided on the inner wall of the ring post (6). Several oil outlet holes (8) communicating with the oil storage groove (7) are formed on the sealing ring (4).

3. A standard nut according to claim 2, characterized in that: The top surface of the hexagonal piece (5) is provided with a circular hole (9) that communicates with the oil storage tank (7).

4. A standard nut according to claim 3, characterized in that: The diameter of the circular hole (9) decreases as the distance between it and the oil storage tank (7) increases.

5. A standard nut according to claim 4, characterized in that: The hexagonal piece (5) has an injection groove (10) on the side facing the body (1).

6. A standard nut according to claim 5, characterized in that: The depth of the internal threaded hole (2) is less than one-quarter of the height of the body (1).

7. A standard nut according to claim 6, characterized in that: The body (1) is made of brass, and the cap is made of PVC.

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