Locking nut for exhaust system

Abstract

The utility model discloses an anti-loose locking nut for an exhaust system, which comprises a main nut, four threaded sleeves are arranged at the top of the main nut in an array shape, the bottoms of the four threaded sleeves are fixedly connected with the top of the main nut, a locking nut is arranged at the top of the main nut, and the locking nut is matched with the threaded sleeves. According to the anti-loosening locking nut for the exhaust system, the spring of the nut can provide continuous downward pressure in a bumpy environment, so that the anti-loosening locking nut has higher environmental adaptability, even if the nut is loosened due to too large bumpy strength, the sliding teeth at the bottom of the locking nut can still fasten the sliding tooth grooves, and the locking effect is better. According to the locking nut, the locking nut is ensured not to rotate, after the bumping condition is finished, under the dual effects of the spring and the sliding teeth, the fastening effect on the bolt is still kept, looseness caused by long-term use is avoided, and when the nut needs to be disassembled, the nut cannot be damaged, and the nut can be repeatedly used.

Description

Technical Field

[0001] This utility model relates to the field of nut technology, specifically to an anti-loosening locking nut for an exhaust system. Background Technology

[0002] Patent application CN218760847U includes a nut body and a reinforcing mechanism. The nut body comprises a round head and a hexagonal portion, which are welded together and coaxially arranged. This high-strength anti-loosening locking nut, through the reinforcement mechanism, allows the sleeve ring to slide on the outside of the reinforcing arc plate after the nut is connected to other structures. This causes the sleeve ring to gradually close through the external thread, resulting in the gradual closure of the opening at the top of the reinforcing arc plate and the vertical groove. By tightening the internal thread on the inner side of the reinforcing arc plate at the constricted vertical groove, the nut is more tightly connected to other structures, giving it high strength and anti-loosening properties, thus solving the problem of easy loosening.

[0003] In the aforementioned patents or prior art, nuts are used in a wide range of scenarios. When nuts are used in extreme environments that are subjected to high-frequency vibration or roughness for a long time, the fasteners of the nuts may loosen due to prolonged vibration, which may lead to the nuts falling off. Utility Model Content

[0004] The purpose of this invention is to provide an anti-loosening locking nut for an exhaust system to solve the problem of easy detachment in bumpy environments mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a locking nut for an exhaust system, comprising a main nut, wherein four threaded sleeves are arranged in an array on the top of the main nut, the bottom of the four threaded sleeves are fixedly connected to the top of the main nut, and a locking nut is provided on the top of the main nut, wherein the locking nut is adapted to the threaded sleeves.

[0006] Furthermore, each of the four threaded sleeves has a large sliding tooth on one side, and the inner wall of the locking nut has four large sliding teeth arranged in a ring array. The large sliding teeth of the locking nut are adapted to the large sliding teeth of the threaded sleeves.

[0007] Furthermore, the top of the main nut is provided with several sliding tooth grooves in a circular array, and the bottom of the locking nut is provided with several sliding teeth in a circular array, the sliding teeth being adapted to the sliding tooth grooves.

[0008] Furthermore, a baffle is provided at the top of the main nut, and the bottom of the baffle is fixedly connected to the top of the main nut.

[0009] Furthermore, the baffle is adapted to the threaded sleeve.

[0010] Furthermore, a spring is provided at the bottom of the baffle, and the bottom of the spring is adapted to the top of the locking nut.

[0011] Compared with the prior art, the beneficial effects of this utility model are: the anti-loosening locking nut of this exhaust system is reasonable and has the following advantages:

[0012] (1) In a bumpy environment, the spring on the nut can provide continuous downward pressure, thus having a stronger environmental adaptability. Even if the nut becomes loose due to excessive bump intensity, the sliding teeth at the bottom of the locking nut can still lock the sliding tooth groove to ensure that the locking nut does not rotate. When the bumpy situation ends, under the dual action of the spring and the sliding teeth, it still maintains the fastening effect on the bolt and will not loosen due to long-term use. When it is necessary to remove the nut, you only need to slightly pry up the locking nut so that the sliding teeth can be disengaged from the sliding tooth groove and then turn counterclockwise to release the locking state. It will not cause damage to the nut itself and can be reused. When the bolt diameter has tolerance or the model is small, the locking nut also has a certain adjustable range to adapt to bolts of different sizes, further reducing production and use costs. At the same time, the main nut and the locking nut adopt the same model and size figure-eight nut design, and only one wrench is needed to tighten the nut completely in two turns. The application scenarios are more extensive, the usage threshold is lowered, the operability is stronger, and the operator's work efficiency is further improved. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0014] Figure 2 This is a schematic diagram of the main nut structure of this utility model;

[0015] Figure 3 This is a schematic diagram of the main nut structure of this utility model;

[0016] Figure 4 This is a schematic diagram of the locking nut structure of this utility model;

[0017] Figure 5 This is a schematic diagram of the locking nut structure of this utility model;

[0018] Figure 6 This is an exploded view of the present invention.

[0019] In the diagram: 1. Main nut; 2. Locking nut; 3. Baffle; 4. Spring; 5. Sliding tooth groove; 6. Threaded sleeve; 7. Sliding tooth. Detailed Implementation

[0020] 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.

[0021] Please see Figure 1-6 The present invention provides a technical solution as follows:

[0022] Example 1:

[0023] In this embodiment, an anti-loosening locking nut for an exhaust system includes a main nut 1, with four threaded sleeves 6 arranged in an array on the top of the main nut 1. The bottom of the four threaded sleeves 6 is fixedly connected to the top of the main nut 1. A locking nut 2 is provided on the top of the main nut 1, and the locking nut 2 is adapted to the threaded sleeves 6.

[0024] In this embodiment, each of the four threaded sleeves 6 has a large sliding tooth on one side, and the inner wall of the locking nut 2 has four large sliding teeth arranged in a ring array. The large sliding teeth of the locking nut 2 are adapted to the large sliding teeth of the threaded sleeves 6.

[0025] In this embodiment, the top of the main nut 1 is provided with a plurality of sliding tooth grooves 5 in a circular array, and the bottom of the locking nut 2 is provided with a plurality of sliding teeth 7 in a circular array, the sliding teeth 7 being adapted to the sliding tooth grooves 5.

[0026] In this embodiment, a baffle 3 is provided on the top of the main nut 1, and the bottom of the baffle 3 is fixedly connected to the top of the main nut 1.

[0027] In this embodiment, the baffle 3 is adapted to the threaded sleeve 6.

[0028] In this embodiment, a spring 4 is provided at the bottom of the baffle 3, and the bottom of the spring 4 is adapted to the top of the locking nut 2.

[0029] Working principle: When in use, first use a suitable wrench to turn the main nut 1 clockwise, so that the internal thread of the main nut 1 moves downward along the bolt thread until it is tightened. Then, use the same wrench to turn the locking nut 2 clockwise, so that the internal sliding teeth of the locking nut 2 contact the external sliding teeth of the threaded sleeve 6, and gradually squeeze the threaded sleeve 6 inward, so that the threaded sleeve 6 bends slightly inward, and applies the squeezing force inward to the bolt to achieve an additional tightening effect. At the same time, the sliding teeth 7 at the bottom of the locking nut 2 begin to move along the sliding tooth groove 5 at the top of the main nut 1. Due to the semi-circular inclined surface design of the sliding teeth, the sliding teeth 7 can only rotate clockwise under the influence of the downward pressure of the spring 4, and cannot rotate counterclockwise, so it is completely tightened and cannot be loosened.

[0030] When it is necessary to remove the nut, use a tool to pry up the locking nut 2 so that its sliding teeth 7 are disengaged from the sliding tooth groove 5. At the same time, turn the locking nut 2 counterclockwise to loosen it. Then turn the main nut counterclockwise until it is completely removed.

[0031] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A locking nut for an exhaust system, comprising a main nut (1), characterized in that: The top of the main nut (1) is provided with four threaded sleeves (6) arranged in an array. The bottom of the four threaded sleeves (6) is fixedly connected to the top of the main nut (1). The top of the main nut (1) is provided with a locking nut (2), which is adapted to the threaded sleeves (6).

2. The anti-loosening lock nut for an exhaust system according to claim 1, characterized in that: Each of the four threaded sleeves (6) has a large sliding tooth on one side. The inner wall of the locking nut (2) has four large sliding teeth arranged in a ring array. The large sliding teeth of the locking nut (2) are compatible with the large sliding teeth of the threaded sleeves (6).

3. The anti-loosening lock nut for an exhaust system according to claim 1, characterized in that: The top of the main nut (1) is provided with several sliding tooth grooves (5) in a ring array, and the bottom of the locking nut (2) is provided with several sliding teeth (7) in a ring array. The sliding teeth (7) are adapted to the sliding tooth grooves (5).

4. The anti-loosening lock nut for an exhaust system according to claim 1, characterized in that: The top of the main nut (1) is provided with a baffle (3), and the bottom of the baffle (3) is fixedly connected to the top of the main nut (1).

5. The anti-loosening lock nut for an exhaust system according to claim 4, characterized in that: The baffle (3) is adapted to the threaded sleeve (6).

6. The anti-loosening lock nut for an exhaust system according to claim 4, characterized in that: A spring (4) is provided at the bottom of the baffle (3), and the bottom of the spring (4) is adapted to the top of the locking nut (2).

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