Wear-resistant and corrosion-resistant fastener with self-locking function

Abstract

The utility model discloses a wear-resistant and corrosion-resistant fastener with a self-locking function, which relates to the technical field of fasteners and comprises a bolt and a nut, the bolt consists of an adjusting head and a screw, two contact plates are mounted between the adjusting head and the nut and between the screw, one end of each contact plate is provided with a protective tube, and the other end of each contact plate is provided with a protective sleeve. The adjusting head and the nut are located in the protection pipe, a plurality of self-locking grooves are distributed in one end of the contact plate in the protection pipe, two self-locking blocks are symmetrically installed at the end, close to the screw rod, of the adjusting head and the end, close to the nut, of the adjusting head, and protection covers are detachably installed in the protection pipe. The contact plate is installed on one side of the adjusting head and one side of the nut, when the nut and the adjusting head rotate to a certain distance, the adjusting head on the adjusting head and the nut can enter the proper self-locking groove, self-locking of the adjusting head and the nut is achieved, and accidental rotation of the adjusting head and the nut is effectively avoided.

Description

Technical Field

[0001] This utility model relates to the field of fastener technology, specifically to a wear-resistant and corrosion-resistant fastener with a self-locking function. Background Technology

[0002] Fasteners are a wide range of mechanical parts used for fastening connections. They are used in a wide range of industries, including energy, electronics, electrical appliances, machinery, chemicals, metallurgy, mold making, hydraulics, and more. Various types of fasteners can be found on all kinds of machinery, equipment, vehicles, ships, railways, bridges, buildings, structures, tools, instruments, chemicals, meters, and supplies. They are the most widely used basic mechanical components.

[0003] Currently, bolts and nuts are among the many fasteners used together. When bolts and nuts are tightened, they do not have a self-locking function, which can cause the nut or bolt to rotate unexpectedly due to mechanical vibration. After tightening, due to the certain deviation between the tightening tool and the bolt and nut, the protective coating on the surface of the bolt and nut may fall off, and they may be affected by the external environment, resulting in rust and corrosion, thus reducing the tightening force. Utility Model Content

[0004] The purpose of this invention is to provide a wear-resistant and corrosion-resistant fastener with a self-locking function to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a wear-resistant and corrosion-resistant fastener with self-locking function, comprising a bolt and a nut. The bolt consists of an adjusting head and a screw. Two contact plates are installed between the adjusting head and the nut and between the screw. A protective tube is installed at one end of each contact plate. The adjusting head and the nut are located inside the protective tube. Multiple self-locking grooves are arranged at one end of each contact plate inside the protective tube. Two self-locking blocks are symmetrically installed at the end of the adjusting head near the screw and the end of the nut. A protective cover is detachably installed inside the protective tube.

[0006] Preferably, the self-locking block is semi-circular, the self-locking groove is an arc groove, and a plurality of the self-locking grooves are evenly distributed in a circumferential array at one end of the contact plate, with the self-locking block located inside the self-locking groove.

[0007] Preferably, the surface of the protective tube is provided with rotating grooves.

[0008] Preferably, one end of the protective tube is provided with a threaded ring, the surface of the protective cover is provided with a threaded groove, one end of the contact plate outside the self-locking groove is provided with a sealing groove, the protective cover is threadedly connected to the inside of the threaded ring, and one end of the protective cover extends into the inside of the sealing groove.

[0009] Preferably, a sleeve is installed at the middle of one end of the protective cover near the nut, one end of the screw is located inside the sleeve, and a lever is installed on one end surface of the protective cover and one end surface of the other protective cover outside the sleeve.

[0010] Preferably, the sleeve is a retractable corrugated pipe.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] 1. This wear-resistant and corrosion-resistant fastener with self-locking function uses a contact plate installed on one side of the adjusting head and nut. When the nut and adjusting head rotate to a certain distance, the adjusting head on the adjusting head and nut will enter the appropriate self-locking groove, thereby achieving self-locking of the adjusting head and nut and effectively preventing accidental rotation of the adjusting head and nut.

[0013] 2. This wear-resistant and corrosion-resistant fastener with self-locking function protects the adjusting head and nut by installing a protective tube and a protective cover on the contact plate. The combination of the protective cover and the protective tube forms a cavity to protect the adjusting head and nut, effectively preventing corrosion of the adjusting head and nut by the external environment and avoiding a reduction in tightening force. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall design of this utility model;

[0015] Figure 2 This is a front sectional view of the present invention;

[0016] Figure 3 This is a top view of the contact plate and protective tube of this utility model;

[0017] Figure 4 This is a schematic diagram of the structure of the nut and self-locking block of this utility model.

[0018] In the diagram: 2. Nut; 3. Contact plate; 4. Protective tube; 5. Self-locking groove; 6. Self-locking block; 7. Protective cover; 8. Rotating groove; 9. Threaded ring; 10. Sealing groove; 11. Sleeve; 12. Actuating block; 101. Adjusting head; 102. Screw. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0021] like Figures 1 to 4 As shown, this embodiment of a wear-resistant and corrosion-resistant fastener with a self-locking function includes a bolt and a nut 2. The bolt and nut 2 are made of wear-resistant material and have a certain strength. The bolt consists of an adjusting head 101 and a screw 102. Two contact plates 3 are installed between the adjusting head 101 and the nut 2, located between the screw 102. A protective tube 4 is installed at one end of each contact plate 3. The adjusting head 101 and the nut 2 are located inside the protective tube 4. The protective tube 4 can protect the surface of the adjusting head 101 and the nut 2, preventing the external environment from causing rust and corrosion on the surface of the adjusting head 101 and the nut 2. Multiple self-locking grooves 5 are arranged at one end of the contact plate 3 inside the protective tube 4. Two self-locking blocks 6 are symmetrically installed at the end of the head 101 near the screw 102 and the end of the nut 2. By installing a contact plate 3 on one side of the adjusting head 101 and the nut 2, when the nut 2 and the adjusting head 101 rotate to a certain distance, the adjusting head 101 on the adjusting head 101 and the nut 2 will enter the appropriate self-locking groove 5, thereby achieving self-locking of the adjusting head 101 and the nut 2 and effectively preventing the adjusting head 101 and the nut 2 from rotating accidentally. The protective tube 4 is equipped with a detachable protective cover 7. The protective cover 7 and the protective tube 4 are combined to form a cavity to protect the adjusting head 101 and the nut 2 and prevent corrosion of the adjusting head 101 and the nut 102.

[0022] Specifically, the self-locking block 6 is semi-circular, and the self-locking groove 5 is an arc groove. Multiple self-locking grooves 5 are evenly distributed in a circumferential array at one end of the contact plate 3, and the self-locking block 6 is located inside the self-locking groove 5. As the distance between the adjusting head 101 and the nut 2 decreases, the self-locking block 6 on the adjusting head 101 and the nut 2 will enter the self-locking groove 5 on the corresponding contact plate 3, which can realize the self-locking of the rotation of the adjusting head 101 and the nut 2. When the nut 2 or the adjusting head 101 is rotated in the opposite direction, the nut 2 and the adjusting head 101 move away from each other, and the adjusting head 101 leaves the self-locking groove 5, so it can be disassembled.

[0023] Furthermore, the protective tube 4 is provided with rotating grooves 8 on its surface. The rotating grooves 8 are provided to facilitate the use of tools to rotate the adjusting head 101 and nut 2 from the side. In actual use, when the self-locking block 6 leaves the self-locking groove 5, the protective tube 4 will rotate accordingly.

[0024] Furthermore, threaded rings 9 are provided at one end of the protective tube 4, and threaded grooves are provided on the surface of the protective cover 7. A sealing groove 10 is installed at one end of the contact plate 3 outside the self-locking groove 5. The protective cover 7 is threadedly connected to the inside of the threaded ring 9, and one end of the protective cover 7 extends into the inside of the sealing groove 10. The protective cover 7 can be installed on the threaded ring 9 inside the protective tube 4 by rotation. A sealed cavity is formed between the protective cover 7 and the contact plate 3 to protect the surface of the adjusting head 101 and the nut 2. The protective cover 7 can block the rotating groove 8. The protective cover 7 can be removed to facilitate the rotation of the adjusting head 101 and the nut 2 in the vertical direction. In actual use, a sealing gasket can be installed inside the sealing groove 10.

[0025] Furthermore, a sleeve 11 is installed in the middle of one end of the protective cover 7 near the nut 2. One end of the screw 102 is located inside the sleeve 11. A lever 12 is installed on one end surface of the protective cover 7 outside the sleeve 11 and on one end surface of the other protective cover 7. Rotating the lever 12 can drive the protective cover 7 to rotate. The sleeve 11 is used to protect the screw 102 after it passes through the nut 2.

[0026] Furthermore, the sleeve 11 is a telescopic corrugated pipe, which can extend and retract to protect the surface of the screw 102 of various lengths, thus playing a protective role and effectively preventing corrosion of the screw 2.

[0027] The usage method of this embodiment is as follows: First, a contact plate 3 is fitted onto the surface of the screw 102, so that the adjusting head 101 is located inside the protective tube 4, and the self-locking block 6 on the adjusting head 101 is located inside the self-locking groove 5 inside the contact plate 3. Then, the screw 102 is inserted into the two holes of the parts to be fastened, with one end of the screw 102 extending outside the holes. Next, another contact plate 3 is fitted onto the surface of the screw 102. Then, the nut 2 is installed by rotation. As the distance between the nut 2 and the adjusting head 101 decreases, the self-locking block on the nut 2... 6. Enter the self-locking groove 5 on the corresponding contact plate 3 to achieve self-locking of the adjusting head 101 and screw 102. Then, install the protective cover 7 by rotation, so that the protective cover 7 is installed inside the threaded ring 9 on the protective tube 4. The protective cover 7 and the protective tube 4 form a sealed space to protect the adjusting head 101 and nut 2, effectively preventing corrosion of the adjusting head 101 and nut 2. When disassembly is required, remove the protective cover 7, rotate the adjusting head 101 and nut 2 in the opposite direction, so that the self-locking block 6 on the adjusting head 101 and nut 2 can be removed from the self-locking groove 5 for disassembly.

[0028] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A wear-resistant and corrosion-resistant fastener with a self-locking function, comprising a bolt and a nut (2), wherein the bolt is composed of an adjusting head (101) and a threaded rod (102), characterized in that: Two contact plates (3) are installed between the adjusting head (101) and the nut (2) and between the screw (102). A protective tube (4) is installed at one end of each contact plate (3). The adjusting head (101) and the nut (2) are located inside the protective tube (4). Multiple self-locking grooves (5) are arranged at one end of the contact plate (3) inside the protective tube (4). Two self-locking blocks (6) are symmetrically installed at the end of the adjusting head (101) near the screw (102) and the end of the nut (2). A protective cover (7) is detachably installed inside the protective tube (4).

2. The wear-resistant and corrosion-resistant fastener with self-locking function according to claim 1, characterized in that: The self-locking block (6) is semi-circular, the self-locking groove (5) is an arc groove, and multiple self-locking grooves (5) are evenly distributed in a circumferential array at one end of the contact plate (3), and the self-locking block (6) is located inside the self-locking groove (5).

3. The wear-resistant and corrosion-resistant fastener with self-locking function according to claim 1, characterized in that: The protective tube (4) is provided with rotating grooves (8) on its surface.

4. The wear-resistant and corrosion-resistant fastener with self-locking function according to claim 1, characterized in that: The protective tube (4) is provided with a threaded ring (9) at one end, the protective cover (7) is provided with a threaded groove on its surface, the contact plate (3) outside the self-locking groove (5) is provided with a sealing groove (10) at one end, the protective cover (7) is threadedly connected to the inside of the threaded ring (9), and one end of the protective cover (7) extends into the inside of the sealing groove (10).

5. The wear-resistant and corrosion-resistant fastener with self-locking function according to claim 1, characterized in that: A sleeve (11) is installed at the middle of one end of the protective cover (7) near the nut (2). One end of the screw (102) is located inside the sleeve (11). A toggle block (12) is installed on one end surface of the protective cover (7) outside the sleeve (11) and one end surface of the other protective cover (7).

6. The wear-resistant and corrosion-resistant fastener with self-locking function according to claim 5, characterized in that: The sleeve (11) is a retractable corrugated pipe.

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