High-strength locknut

Abstract

The utility model discloses a high-strength lock nut, which relates to the technical field of nuts, comprises a head part, a bottom part and a thread part, and further comprises a lock part arranged on one side of the head part, and solves the problem that the existing nut is easy to loosen when being used on equipment which generates vibration during operation, so that a screw falls off. The nut is screwed on the screw, the screw extrudes and expands the metal elastic piece, and the smaller end of the metal elastic piece can abut against the thread of the screw due to the elasticity of the metal elastic piece, so that the metal elastic piece generates certain pressure when vibration occurs, the end of the metal elastic piece is tightly attached to the screw, the friction force of connection is increased, and the nut is prevented from loosening; and the friction force between the nut and the screw can be increased through the arranged anti-loosening ring and the protruding block, the anti-loosening effect is further improved, the friction force between the nut and a fixed object is increased through the anti-loosening pad at the bottom, and the nut is further prevented from loosening.

Description

Technical Field

[0001] The utility model relates to the technical field of nuts, in particular to a high-strength anti-loosening nut. Background Art

[0002] A nut is an industrial part used to fix a bolt or screw. It usually consists of a head, a threaded part and a bottom. It is usually made of metal. The threaded part matches the external thread of the bolt or screw. The bolt or screw is fixed in a position by applying pressure by rotating the nut.

[0003] Currently, most equipment uses bolts. When used in some high-vibration environments or equipment subjected to continuous external force impact, the nuts may loosen and fall off due to the vibration and impact during the operation of the equipment. The falling of the nuts will cause the screws to loosen, which will cause the connection to no longer be firm, and even cause the entire equipment to malfunction. Utility Model Content

[0004] The utility model aims to provide a high-strength anti-loosening nut, which solves the problem that the existing nuts in the background technology are easy to loosen and cause the screws to fall off when used on some equipment that generates vibration during operation.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a high-strength anti-loosening nut, comprising a head, a bottom and a threaded portion, and also comprising an anti-loosening portion arranged on one side of the head, the anti-loosening portion comprising an annular shell fixedly connected to one end of the head and a metal elastic part connected to one side of the annular shell, an anti-loosening ring is arranged inside the annular shell, the metal elastic part is conical and hollow, and the metal elastic part is provided with four groups of grooves at equal intervals along its circumferential direction.

[0006] Preferably, a built-in groove is provided inside the annular shell, and the anti-loosening ring is fixedly connected to the inside of the built-in groove.

[0007] Preferably, the anti-loosening ring is provided with a plurality of groups of raised blocks at equal intervals along its circumferential direction, and the anti-loosening ring and the raised blocks are both components made of rubber material.

[0008] Preferably, the diameter of the connecting end of the metal elastic member and the annular shell is larger than the inner circle diameter of the threaded portion, and the smaller end diameter of the metal elastic member is smaller than the inner circle diameter of the threaded portion.

[0009] Preferably, an external groove is opened on one side of the bottom, an anti-loosening pad is fixedly provided inside the external groove, a part of the anti-loosening pad slightly protrudes from the bottom, and the anti-loosening pad is a component made of rubber material.

[0010] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0011] The utility model provides a high-strength anti-loosening nut. When in use, the nut is tightened onto the screw, and the screw squeezes and expands the metal elastic member. Due to its own elasticity, the smaller end of the metal elastic member can collide with the thread of the screw. When encountering vibration, the metal elastic member generates a certain pressure, so that the end of the metal elastic member fits tightly against the screw, thereby increasing the friction of the connection and preventing the nut from loosening. In addition, the friction between the nut and the screw can be increased by providing an anti-loosening ring and a protruding block, further improving the anti-loosening effect. Secondly, the friction between the nut and the fixed object is increased by using an anti-loosening pad at the bottom, further preventing the nut from loosening. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0013] Figure 2 This is a schematic diagram of the anti-loosening structure of the utility model;

[0014] Figure 3 It is an overall cross-sectional view of the utility model;

[0015] Figure 4 This is a schematic diagram of the annular shell structure of the utility model;

[0016] Figure 5 It is a schematic diagram of the bottom structure of the utility model.

[0017] In the figure: 1, head; 2, bottom; 21, anti-loosening pad; 22, external groove; 3, threaded part; 4, anti-loosening part; 41, annular shell; 411, anti-loosening ring; 412, raised block; 413, built-in groove; 42, metal elastic part; 421, groove. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] In order to further understand the content of the utility model, the utility model is described in detail in conjunction with the accompanying drawings.

[0020] Combination Figure 1-Figure 4The utility model discloses a high-strength anti-loosening nut, comprising a head 1, a bottom 2 and a threaded portion 3, and also comprising an anti-loosening portion 4 arranged on one side of the head 1, wherein the anti-loosening portion 4 comprises an annular shell 41 fixedly connected to one end of the head 1 and a metal elastic member 42 connected to one side of the annular shell 41, wherein an anti-loosening ring 411 is arranged inside the annular shell 41, and the metal elastic member 42 is conical and hollow, and the metal elastic member 42 is provided with four groups of grooves 421 at equal intervals along its circumferential direction.

[0021] Specifically, when using the nut, first place the screw in the mounting hole, and point the bottom 2 of the nut toward the end of the screw, put a tool on the outside of the bottom 2, and align the threaded portion 3 with the screw, then use the tool to twist the head 1, and connect the head 1 to the outside of the screw with the cooperation of the threaded portion 3 and the screw. When the end of the screw passes through the anti-loosening ring 411, the protrusion 412 is deformed. When the screw passes through the metal elastic member 42, the groove 421 on the outside can provide an elastic space for the metal elastic member 42. Therefore, when the screw passes through the metal elastic member 42, The smaller end of the metal elastic part 42 deforms and expands outward. When the bottom 2 contacts the fixed part or connector, the smaller end of the metal elastic part 42 rebounds toward the axis due to the elasticity of the metal elastic part 42 itself, so that the smaller end of the metal elastic part 42 can conflict with the thread of the screw. When the equipment vibrates during use, the metal elastic part 42 will generate a certain pressure, so that its end fits tightly against the screw, increasing the friction of the connection, preventing the nut from loosening on its own in a vibrating environment, and improving the stability and anti-loosening ability of the nut.

[0022] The utility model is further described below in conjunction with embodiments.

[0023] Combination Figure 4 A built-in groove 413 is opened inside the annular shell 41 , and the anti-loosening ring 411 is fixedly connected to the inside of the built-in groove 413 .

[0024] In this embodiment, the anti-loosening ring 411 can be fixed in advance in the built-in groove 413 during production, and the annular shell 41 can be connected to one side of the head 1 by welding, but the production method is not limited to this.

[0025] Combination Figure 4 The anti-loosening ring 411 is provided with a plurality of groups of raised blocks 412 at equal intervals along its circumferential direction, and the anti-loosening ring 411 and the raised blocks 412 are both components made of rubber material.

[0026] In this embodiment, when the equipment vibrates during operation, the annular shell 41 can provide a certain elastic deformation, so that the protrusion 412 set inside the anti-loosening ring 411 maintains close contact with the screw, which can increase the friction force, making it difficult for the nut and the screw to loosen, further improving the anti-loosening effect.

[0027] Combination Figure 2 The diameter of the connecting end of the metal elastic member 42 and the annular shell 41 is larger than the inner diameter of the threaded portion 3 , and the diameter of the smaller end of the metal elastic member 42 is smaller than the inner diameter of the threaded portion 3 .

[0028] In this embodiment, when the screw passes through the metal elastic part 42, since the diameter of the smaller end of the metal elastic part 42 is smaller than the screw, and the groove 421 opened on the outside thereof can provide an elastic space for the metal elastic part 42, when the screw passes through the metal elastic part 42, the smaller end of the metal elastic part 42 will be deformed and expand outward. When the bottom 2 contacts the fixed part or connecting part, the smaller end of the metal elastic part 42 will rebound around the axis due to the elasticity of the metal elastic part 42 itself, so that the smaller end of the metal elastic part 42 can conflict with the thread of the screw.

[0029] Combination Figure 5 An external groove 22 is opened on one side of the bottom 2, and an anti-loosening pad 21 is fixedly arranged inside the external groove 22. Part of the anti-loosening pad 21 slightly protrudes from the bottom 2, and the anti-loosening pad 21 is a component made of rubber material.

[0030] In this embodiment, when the bottom 2 conflicts with the fixed part or connector, the anti-loosening pad 21 on one side thereof can conflict with the part or connector. Since the anti-loosening pad 21 is made of rubber material, it can provide a certain friction force, so that there is a certain friction force between the bottom 2 and the part or connector, further preventing the nut from loosening during vibration.

[0031] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0032] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high-strength anti-loosening nut, comprising a head (1), a bottom (2) and a threaded portion (3), characterized in that: The invention also comprises an anti-loosening portion (4) arranged on one side of the head (1), the anti-loosening portion (4) comprising an annular shell (41) fixedly connected to one end of the head (1) and a metal elastic member (42) connected to one side of the annular shell (41), an anti-loosening ring (411) is arranged inside the annular shell (41), the metal elastic member (42) is conical and hollow, and the metal elastic member (42) is provided with four groups of grooves (421) at equal intervals along its circumferential direction.

2. A high-strength anti-loosening nut according to claim 1, characterized in that: The annular shell (41) is provided with an internal groove (413), and the anti-loosening ring (411) is fixedly connected to the inside of the internal groove (413).

3. A high-strength anti-loosening nut according to claim 2, characterized in that: The anti-loosening ring (411) is provided with a plurality of groups of protruding blocks (412) at equal intervals along its circumferential direction, and the anti-loosening ring (411) and the protruding blocks (412) are both components made of rubber material.

4. A high-strength anti-loosening nut according to claim 1, characterized in that: The diameter of the connecting end of the metal elastic member (42) and the annular shell (41) is larger than the inner diameter of the threaded portion (3), and the smaller end diameter of the metal elastic member (42) is smaller than the inner diameter of the threaded portion (3).

5. The high-strength anti-loosening nut according to claim 1, characterized in that: An external groove (22) is provided on one side of the bottom (2), an anti-loosening pad (21) is fixedly provided inside the external groove (22), a portion of the anti-loosening pad (21) slightly protrudes from the bottom (2), and the anti-loosening pad (21) is a component made of rubber material.

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