Anti-loosening nut

Abstract

The invention discloses an anti-loosening nut. The anti-loosening nut comprises a nut body, the nut body is composed of a connecting part and an anti-loosening part, one end of the connecting part is connected with the upper portion of one end of the anti-loosening part, a certain angle is formed between the axis of the connecting part and the axis of the anti-loosening part, and an opening is formed between the lower portion of the connecting part and the lower portion of the anti-loosening part. The opening is formed in the middle of the independent nut body, and the certain angle is formed between the anti-loosening part and the connecting part, so that the nut body has the characteristics of a spring, and the firmness of connection between the nut body and the screw can be ensured; the nut has the advantages of being simple in structure, convenient to machine and manufacture, low in cost and firm in connection.

Description

Technical Field

[0001] The invention relates to the technical field of connecting fasteners, in particular to an anti-loosening nut. Background Art

[0002] The working principle of the nut is to use the friction between the nut and the bolt for self-locking. However, the reliability of this self-locking will be reduced under dynamic load. In some important occasions, we will take some anti-loosening measures to ensure the reliability of the nut locking. Among them, the use of anti-loosening nuts is one of the anti-loosening measures. Fasteners are widely used in the industry. Many fasteners are in a heavy-loaded and vibrating working environment, and it is easy to loosen. Once the fasteners in certain parts are loose, it is likely to cause serious accidents or even endanger life. Therefore, improving the anti-loosening performance of nuts has become an urgent problem to be solved.

[0003] In the related technology, the existing anti-loosening nuts generally adopt a group of nuts that cooperate with each other for locking, but this form is generally complex in structure and troublesome to install. For example, an anti-loosening nut disclosed in application number CN202010639051.4 includes a bolt and a groove nut, characterized in that: a groove is provided inside the groove nut, the inner wall of the groove is threadedly connected to the bolt, a pre-tightening nut is provided at the bottom end of the groove nut, the interior of the pre-tightening nut is threadedly connected to the bolt, a metal locking ring is provided between the groove nut and the pre-tightening nut, the inner wall of the metal locking ring is threadedly connected to the bolt, a notch is provided on one side of the metal locking ring, a wire is movably connected inside the notch, the wire matches the notch, the top of the wire fits against the side wall of the bolt, the top of the wire matches the groove nut, and the groove is eccentrically set. The nut is fixed on the screw by the combination of the groove nut, the wire, the metal lock ring and the pre-tightening nut to achieve the effect of preventing it from loosening. However, since the metal lock ring needs to be set and the wire needs to be passed through the metal lock ring and then matched with the nut, the structure is very complicated and the installation is very complicated. The installation time of a single nut is also relatively long, and quick installation cannot be achieved.

[0004] In addition, when using a single nut to achieve the effect of preventing loosening, it is generally necessary to cooperate with a retaining spring or a retaining ring set on the nut to achieve the effect that the nut will never loosen. For example, the automatic locking anti-loosening nut disclosed in the application number CN201310133458.X includes a nut body with a threaded hole, one end of the nut body is provided with an annular boss extending outward, and an annular elastic locking piece is fixed in the annular hole of the annular boss. The center hole of the annular elastic locking piece is concentric with the threaded hole, and the inner diameter of the elastic locking piece is smaller than the inner diameter of the threaded hole. The elastic locking piece is built into the end to achieve the combination of the elastic locking piece and the nut, thereby achieving the purpose of preventing loosening;

[0005] Another example is the wedge-shaped anti-loosening nut disclosed in application number CN202010916490.5, which includes a nut body 1 and a bolt body 2. The rear end of the nut body 1 in the tightening direction is provided with a concave truncated surface 12, and also includes: a nut tightening member 3, which is sleeved on the screw of the bolt body 2 and adapted to the truncated surface 12. The nut body is provided with a truncated surface that cooperates with the nut tightening member, and the purpose of preventing loosening is achieved by cooperating with the nut tightening member;

[0006] Therefore, a loose-proof nut is provided to solve the existing deficiencies. Summary of the invention

[0007] The technical problem to be solved by the present invention is to overcome the defects of the above-mentioned technology and provide an anti-loosening nut.

[0008] In order to solve the above technical problems, the technical solution provided by the present invention is an anti-loosening nut: comprising a nut body;

[0009] The nut body consists of a connecting part and an anti-loosening part. One end of the connecting part is connected to the upper part of one end of the anti-loosening part. The axis of the connecting part and the axis of the anti-loosening part are arranged at a certain angle. An opening is formed between the lower part of the connecting part and the lower part of the anti-loosening part.

[0010] As an improvement, the connecting portion and the anti-loosening portion are integrally formed.

[0011] As an improvement, the angle between the axis of the connecting portion and the axis of the anti-loosening portion is an acute angle.

[0012] Compared with the prior art, the advantages of the present invention are as follows: 1. By having a separate opening in the middle of the nut body and setting a certain angle between the axis of the anti-loosening part and the connecting part, the nut body has a spring characteristic, which can ensure the firmness of the connection between the nut body and the screw rod;

[0013] 2. The nut has a simple structure and is easy to process and manufacture, and has the characteristics of low cost and firm connection. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 The utility model is a structural schematic diagram of an anti-loosening nut of the present invention.

[0015] Figure 2 The utility model is a front view of an anti-loosening nut of the present invention.

[0016] Figure 3 It is a side view of an anti-loosening nut of the present invention.

[0017] Figure 4 yes Figure 3 Cross-sectional view at AA in the middle.

[0018] As shown in the figure: 1. Nut body, 2. Connecting part, 3. Anti-loosening part, 4. Opening. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solution and advantages of the embodiments of the invention clearer, the technical solution in the embodiments of the invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the invention. Obviously, the described embodiments are part of the embodiments of the invention, not all of the embodiments. Generally, the components of the embodiments of the invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0020] In the description of the embodiments of the invention, it should be noted that if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate an orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the utility model product is usually placed when in use, it is only for the convenience of describing the invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0021] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0022] In the description of the embodiments of the invention, "a plurality of" means at least two.

[0023] In the description of the embodiments of the invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the invention can be understood according to specific circumstances.

[0024] Combined with Figure 1-4 As shown, an anti-loosening nut includes a nut body 1;

[0025] The nut body 1 is made of high-quality carbon structural steel. In the present embodiment, the nut body 1 is preferably made of No. 45 steel.

[0026] The nut body 1 is composed of a connecting part 2 and an anti-loosening part 3. Specifically, the connecting part 2 and the anti-loosening part 3 are integrally formed, one end of the connecting part 2 is connected to the upper part of one end of the anti-loosening part 3, and the axis of the connecting part 2 and the axis of the anti-loosening part 3 are arranged at a certain angle. Specifically, the angle between the axis of the connecting part 2 and the axis of the anti-loosening part 3 is an acute angle, and an opening 4 is formed between the lower part of the connecting part 2 and the lower part of the anti-loosening part 3.

[0027] Specifically, the distance between the lower portion of the opening 4 formed between the connecting portion 2 and the anti-loosening portion 3 is 0.6 times the length of the nut body 1 .

[0028] In a specific implementation, an opening 4 is provided in the nut body 1 at the connection between the connection part 2 and the anti-loosening part 3, and the axis of the anti-loosening part 3 and the axis of the connection part 2 are arranged at a certain angle, and the nut body 1 is shaped by heat treatment to generate tension, so that it has spring characteristics;

[0029] In the specific implementation of the present invention, after the nut body 1 is installed and tightened, the tension formed between the connecting portion 2 and the anti-loosening portion 3 in the nut body 1, that is, the spring property, is used to ensure that the nut body 1 is fixed on the screw position.

[0030] Even if vibration occurs due to the connection during the tightening process, the axis between the connecting part 2 and the anti-loosening part 3 is set at a certain angle, which ensures the stability of the spring characteristics of the nut body 1 and the firmness of the connection with the screw, thereby avoiding loosening of the nut body 1 due to factors such as vibration.

[0031] The present invention and its embodiments are described above, and such description is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if ordinary technicians in the field are inspired by it, without departing from the purpose of the invention, they can design a structure and embodiment similar to the technical solution without creativity, which should belong to the protection scope of the present invention.

Claims

1. An anti-loosening nut, characterized in that: It comprises a nut body (1); The nut body (1) is composed of a connecting portion (2) and an anti-loosening portion (3); one end of the connecting portion (2) is connected to the upper portion of one end of the anti-loosening portion (3); the axis of the connecting portion (2) and the axis of the anti-loosening portion (3) are arranged at a certain angle; and an opening (4) is formed between the lower portion of the connecting portion (2) and the lower portion of the anti-loosening portion (3).

2. The anti-loosening nut according to claim 1, characterized in that: The connecting portion (2) and the anti-loosening portion (3) are integrally formed.

3. The anti-loosening nut according to claim 1, characterized in that: The angle between the axis of the connecting portion (2) and the axis of the anti-loosening portion (3) is an acute angle.

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