Anti-loosening nut

Abstract

The utility model discloses an anti-loosening nut which comprises a nut body, a thread part is fixedly installed at the lower end of the nut body, and the thread part and the nut body are integrally formed. The outer side of the thread part is sleeved with an abutting flat gasket, and the abutting flat gasket and the nut body are elastically connected through two symmetrically-arranged elastic assemblies. According to the nut, the elastic assembly and the abutting flat gasket are introduced, and the structures of the nut body and the thread part are optimized, so that elastic buffering and accurate adjustment of pre-tightening force in the fastening process of the nut are achieved, and the problems existing in a traditional nut are effectively solved.

Description

Technical Field

[0001] This utility model relates to the field of nut technology for fluid equipment, and in particular to a nut designed to prevent loosening. Background Technology

[0002] In the field of mechanical connections, nuts are commonly used fastening components, and their performance and stability are directly related to the safety and reliability of the entire mechanical system. However, traditional nut designs often suffer from loosening problems, especially under vibration, impact, or long-term load conditions. Nuts are prone to loosening due to uneven stress or fatigue, leading to connection failure and even safety accidents.

[0003] Locking washers or locking coatings are generally used to increase frictional resistance. Since the nut is not pre-fitted with the locking washer, the operator needs to place it during installation. Because the placement process is cumbersome, the operator may forget to place the washer during installation, affecting the tightening effect. In addition, traditional nuts often cannot provide enough adjustment space, making it difficult to guarantee the tightening effect of the connection. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing an anti-loosening nut. By introducing an elastic component and a clamping washer, and by optimizing the structure of the nut body and the threaded portion, the nut achieves elastic buffering and precise adjustment of preload during the tightening process, effectively solving the problems of traditional nuts.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] An anti-loosening nut includes a nut body, and a threaded portion is fixedly installed at the lower end of the nut body, the threaded portion being integrally formed with the nut body;

[0007] A pressing flat washer is fitted on the outer side of the threaded portion, and the pressing flat washer is elastically connected to the nut body through two symmetrically arranged elastic components.

[0008] Preferably, the threaded part is composed of a hollow cylinder and an external thread, and the end of the hollow cylinder away from the nut body is chamfered.

[0009] Preferably, the elastic component includes a sliding cavity formed at the lower end of the nut body, a limiting plate is slidably connected inside the sliding cavity, and a vertical rod is rotatably connected to the upper end of the pressing flat pad, the upper end of the vertical rod extending into the sliding cavity and detachably connected to the limiting plate.

[0010] Preferably, the upper end of the vertical rod is provided with a thread and is threadedly connected to the limiting plate, and the limiting plate is provided with a threaded hole that matches the vertical rod.

[0011] Preferably, the cross-section of the sliding cavity is T-shaped, and the longitudinal section is rectangular.

[0012] Preferably, the outer and inner corners of the upper end face of the nut body are chamfered.

[0013] This utility model has the following beneficial effects:

[0014] By introducing elastic components, the nut provides a certain degree of elastic cushioning during tightening, effectively reducing the risk of loosening due to vibration, impact, or long-term load. This design allows the nut to maintain a stable connection under various working conditions, extending the service life of the connection.

[0015] The addition of a clamping washer increases the contact area between the nut and the connector, improving the uniformity of the tightening force distribution. This not only enhances the strength of the connection but also reduces the risk of connector damage due to stress concentration.

[0016] The one-piece molding design of the nut body and threaded portion, along with the chamfered edges, makes the nut installation process smoother, reducing installation difficulty and time. Simultaneously, by adjusting the threaded connection between the vertical rod and the limiting plate, the preload between the clamping washer and the nut body can be easily adjusted to meet the tightening requirements under different working conditions. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of an anti-loosening nut proposed in this utility model;

[0018] Figure 2 This is a side view of an anti-loosening nut proposed in this utility model;

[0019] Figure 3 This is a cross-sectional view of an anti-loosening nut proposed in this utility model.

[0020] In the diagram: 1 Nut body, 2 Clamping washer, 3 Anti-loosening spring, 4 Threaded part, 5 Vertical rod, 6 Sliding cavity, 7 Limiting plate. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0022] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are 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.

[0023] Reference Figures 1-3 A type of anti-loosening nut includes a nut body 1. The outer and inner corners of the upper end face of the nut body 1 are chamfered. A threaded part 4 is fixedly installed at the lower end of the nut body 1. The threaded part 4 is integrally formed with the nut body 1. The threaded part 4 is composed of a hollow cylinder and external threads. The end of the hollow cylinder away from the nut body 1 is chamfered.

[0024] A pressing washer 2 is fitted on the outer side of the threaded part 4. The diameter of the washer is larger than that of the nut, which is used to increase the contact area between the nut and the connector and improve the fastening effect of the connection. The pressing washer 2 and the nut body 1 are elastically connected by two symmetrically arranged elastic components, so that the nut can have a certain buffering and adaptability when subjected to external force. The elastic component includes a sliding cavity 6 opened at the lower end of the nut body 1. The cross-section of the sliding cavity 6 is a T-shaped structure and the longitudinal section is a rectangular structure, so that the limiting plate 7 can slide stably in the sliding cavity 6 and is not easy to fall off. The limiting plate 7 is slidably connected inside the sliding cavity 6. The sliding function of the limiting plate 7 allows the elastic component to adjust the pressing force according to actual needs, improving the adaptability of the nut. The upper end of the pressing washer 2 is rotatably connected to a vertical rod 5. The upper end of the vertical rod 5 extends into the sliding cavity 6 and is detachably connected to the limiting plate 7. The upper end of the vertical rod 5 is provided with threads and is threadedly connected to the limiting plate 7. The limiting plate 7 is provided with threaded holes that are adapted to the vertical rod 5.

[0025] Working principle:

[0026] When the nut is tightened, the threaded part 4 engages with the bolt or other threaded fasteners to generate a tightening force. The flat washer 2, due to its elastic connection with the nut body 1 via an elastic component, can provide a certain elastic buffer during the tightening process, reducing the risk of loosening caused by vibration or external force.

[0027] When the nut is tightened, the pressure on the flat washer 2 is transmitted to the limiting plate 7 through the vertical rod 5, causing the limiting plate 7 to slide downwards within the sliding cavity 6. Because the sliding cavity 6 has a T-shaped cross-section and a rectangular longitudinal section, this design prevents the limiting plate 7 from rotating or falling off during sliding, thus maintaining the stability of the elastic connection.

[0028] When the nut is subjected to vibration or external force, the clamping washer 2 can absorb these forces to a certain extent and transmit them to the nut body 1 through the elastic component, thereby reducing the risk of loosening. At the same time, due to the threaded connection between the vertical rod 5 and the limiting plate 7, the preload between the clamping washer 2 and the nut body 1 can be adjusted, further improving the stability of the connection and facilitating the installation and removal of the clamping washer 2.

[0029] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the scope of protection of this utility model.

Claims

1. A locking nut, characterized by: Including nut body (1), the lower end of the nut body (1) is fixedly installed with a threaded part (4), the threaded part (4) is integrally formed with the nut body (1); The outer side of the threaded part (4) is provided with a tight flat pad (2), and the tight flat pad (2) and the nut body (1) are elastically connected by two symmetrically arranged elastic components.

2. The anti-loosening nut according to claim 1, wherein The threaded part (4) is composed of a hollow cylinder and an outer thread, and the end of the hollow cylinder away from the nut body (1) is provided with a chamfer.

3. The anti-loosening nut according to claim 1, wherein The elastic component includes a sliding cavity (6) opened in the lower end of the nut body (1), the inside of the sliding cavity (6) is slidably connected with a limiting plate (7), the upper end of the tight flat pad (2) is rotatably connected with a vertical rod (5), and the upper end of the vertical rod (5) extends into the sliding cavity (6) and is detachably connected with the limiting plate (7).

4. The anti-loosening nut according to claim 3, wherein The upper end of the vertical rod (5) is provided with a thread and is threadedly connected with the limiting plate (7), and the limiting plate (7) is provided with a threaded hole matched with the vertical rod (5).

5. The locking nut of claim 3 wherein, The cross section of the sliding cavity (6) is T-shaped structure, and the longitudinal section is rectangular structure.

6. The anti-loose nut of claim 1, wherein The outer edge corner and the inner edge corner of the upper end surface of the nut body (1) are both provided with chamfers.

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