Hexagonal flange nut with locking structure

Abstract

The utility model discloses a hexagon flange nut with a locking structure, which comprises a hexagon nut main body, an annular convex block is arranged below the outer wall of the hexagon nut main body, an annular groove is arranged at the bottom end of the annular convex block, an annular gasket is arranged below the annular convex block, and the annular gasket is arranged in the annular groove. A rectangular spring is arranged between the annular gasket and the annular protruding block, a first annular protrusion and a second annular protrusion are arranged at the top end of the annular gasket, annular installation grooves are formed in the upper portion and the lower portion of the circumferential inner wall of the hexagon nut body, and annular elastic nylon inserts are installed in the annular installation grooves. Through the synergistic effect of the double locking structures, the locking performance of the hexagonal nut body under the complex working conditions of vibration, impact and the like is remarkably improved, the equipment maintenance and repair cost caused by loosening of the hexagonal nut and potential production accident losses are remarkably reduced through the double locking structures, and the service life of the hexagonal nut is prolonged. Good economic benefits and market popularization values are realized.

Description

TECHNICAL FIELD

[0001] The utility model relates to hexagonal flange nut technical field, concretely is a hexagonal flange nut with locking structure. BACKGROUND

[0002] In the field of mechanical connection, the reliability and stability of the hexagonal flange nut, which is widely used as a standard part, directly affect the safety of equipment operation. The traditional hexagonal flange nut relies on the friction between the thread pair to achieve fastening. Under complex working conditions such as vibration and impact, the nut is prone to loosening, leading to connection failure, and in severe cases, even causing equipment failure or safety accidents. In scenarios such as automobile engine component connection and engineering machinery structure assembly, nut loosening problems are common.

[0003] After searching, patent publication No. CN221195692U discloses a locking nut with limiting structure, comprising a mounting shaft body, a locking nut body is threadedly connected at a predetermined position of the mounting shaft body, a reinforcing ring is fixedly connected to the bottom of the locking nut body, an installation groove is formed in the inner surface of the reinforcing ring, a power assembly is jointly installed between the installation groove and the reinforcing ring, an arc-shaped clamping plate is installed on one side of the power assembly, a wear-resistant layer is fixedly connected to the outer surface of the arc-shaped clamping plate away from the limiting plate, and an arc-shaped groove matching the arc-shaped clamping plate is formed on one side of the outer surface of the mounting shaft body. In the utility model, the arc-shaped groove, arc-shaped clamping plate, power assembly and reinforcing ring can reduce the impact of angle difference on the installation of the locking nut, ensure the positioning and locking performance of the locking nut, and the thicker arc-shaped clamping plate can avoid breaking, increasing the safety of the locking nut.

[0004] To solve the problem of nut loosening, the existing technology often uses nylon or other elastic materials embedded in the nut to increase the friction force. However, simply setting nylon inserts on the inner wall of the nut has limited anti-loosening effect and cannot meet the fastening needs under different working conditions. At the same time, some nuts use gaskets to achieve auxiliary anti-loosening, but traditional gaskets are relatively independent of the nut and cannot effectively cooperate with the nut to limit the axial loosening of the nut. Therefore, a hexagonal flange nut with locking structure is designed. Utility model content

[0005] In view of the defects or deficiencies of the hexagonal flange nut, the purpose of the utility model is to provide a hexagonal flange nut with locking structure. Through the synergistic effect of the double locking structure, the locking performance of the hexagonal nut body under complex working conditions such as vibration and impact is significantly improved.

[0006] To achieve the above-mentioned utility model purposes, the utility model adopts the following technical solutions:

[0007] The utility model provides a hexagonal flange nut with locking structure, including hexagonal nut main part, the outer wall below of hexagonal nut main part is provided with annular lug, the bottom of annular lug is provided with annular recess, the below of annular lug is provided with annular gasket, be provided with rectangular spring between annular gasket and annular lug, the top of annular gasket is provided with first annular protrusion and second annular protrusion, and second annular protrusion is located in the inside of first annular protrusion,

[0008] The circumferential inner wall of the hexagonal nut main body is provided with a threaded groove, and the threaded groove is located between the two annular mounting grooves.

[0009] As preferred, one end of the rectangular spring is located between the circumferential inner wall of the first annular protrusion and the circumferential outer wall of the second annular protrusion, and the other end of the rectangular spring is located in the annular recess.

[0010] As preferred, the circumferential inner wall of the hexagonal nut main body is provided with a threaded groove, and the threaded groove is located between the two annular mounting grooves.

[0011] As preferred, the inner ring part of the annular elastic nylon insert extends to the inside area of the hexagonal nut main body, forming the inner ring of the annular elastic nylon insert partially overlapping with the inside space of the hexagonal nut main body.

[0012] Compared with the prior art, the above one or more technical solutions have the following beneficial effects:

[0013] 1. In the utility model, through the cooperation of a series of structures, the annular elastic nylon insert is arranged on both sides of the circumferential inner wall of the hexagonal nut main body. When the hexagonal nut main body is installed on the screw rod, the annular elastic nylon insert will be in close contact with the surface of the screw rod, not only generating a large friction force, but also being able to fill the small gap between the nut and the bolt due to the elasticity and plasticity of the annular elastic nylon insert, so that the connection between the hexagonal nut main body and the screw rod is more tight, reducing the loosening of the hexagonal nut main body on the screw rod caused by the gap, and also sealing the threaded connection between the hexagonal nut main body and the screw rod, avoiding rust and corrosion of the threaded connection between the hexagonal nut main body and the screw rod.

[0014] 2. In the utility model, through the cooperation of a series of structures, the annular gasket in the separated state at one end of the hexagonal nut main body cooperates with the rectangular spring. When the hexagonal nut main body is tightened, the rectangular spring will be compressed after the hexagonal nut main body is tightened, generating elastic deformation, so that a continuous axial force can be applied between the hexagonal nut main body and the connected part. This force makes the friction force between the hexagonal nut main body and the screw rod larger, so that the hexagonal nut main body can be prevented from loosening due to vibration, impact and other external forces.

[0015] Therefore, from the above, the utility model discloses a synergistic effect of double locking structure, significantly improve the locking performance of hexagon nut main body under the complex working conditions such as vibration, impact, and double locking structure significantly reduces the equipment maintenance, repair cost and potential production accident loss caused by hexagon nut loosening, has good economic benefit and market promotion value. BRIEF DESCRIPTION OF DRAWINGS

[0016] The description and drawings of a part of the utility model are used to provide further understanding of the utility model, and the illustrative embodiment of the utility model and its explanation are used to explain the utility model, and do not constitute improper limitation to the utility model.

[0017] Figure 1 It is the whole three-dimensional structure schematic diagram of the utility model.

[0018] Figure 2 It is the whole explosion structure schematic diagram of the utility model.

[0019] Figure 3 It is the sectional view of the whole of the utility model.

[0020] Figure 4 It is the sectional view of the hexagon nut main body of the utility model.

[0021] Figure 5 It is the structure schematic diagram of the annular gasket of the utility model.

[0022] In the drawing:

[0023] 100, hexagon nut main body;110, thread groove;120, annular lug;121, annular groove;130, annular mounting groove;

[0024] 200, annular elastic nylon insert;

[0025] 300, rectangular spring;

[0026] 400, annular gasket;410, first annular protrusion;420, second annular protrusion. DETAILED DESCRIPTION

[0027] The utility model will be further explained below in combination with the drawings and embodiments.

[0028] It should be pointed out that the following detailed description is all exemplary, and aims at providing further explanation to the utility model. Unless otherwise indicated, all technical and scientific terms used in this paper have the same meaning as that generally understood by ordinary skilled person in the technical field to which the utility model belongs.

[0029] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of exemplary embodiments according to the invention. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0030] like Figures 1-5 As shown, a hexagonal flange nut with a locking structure includes a hexagonal nut body 100. An annular protrusion 120 is provided on the lower outer wall of the hexagonal nut body 100. An annular groove 121 is provided at the bottom end of the annular protrusion 120. An annular washer 400 is provided below the annular protrusion 120. A rectangular spring 300 is provided between the annular washer 400 and the annular protrusion 120. A first annular protrusion 410 and a second annular protrusion 420 are provided at the top end of the annular washer 400, and the second annular protrusion 420 is located inside the first annular protrusion 410. The cooperation of the first annular protrusion 410 and the second annular protrusion 420 can limit one end of the rectangular spring 300.

[0031] The hexagonal nut body 100 has annular mounting grooves 130 on both the upper and lower sides of its circumferential inner wall. Annular elastic nylon inserts 200 are installed in the annular mounting grooves 130. The elastic deformation of the annular elastic nylon inserts 200 generates additional friction, which effectively prevents the hexagonal nut body 100 from rotating circumferentially.

[0032] One end of the rectangular spring 300 is located between the circumferential inner wall of the first annular protrusion 410 and the circumferential outer wall of the second annular protrusion 420, and the other end of the rectangular spring 300 is located in the annular groove 121. The annular groove 121 can limit the other end of the rectangular spring 300.

[0033] A threaded groove 110 is provided on the circumferential inner wall of the hexagonal nut body 100, and the threaded groove 110 is located between two annular mounting grooves 130, so that the annular elastic nylon inserts 200 in the two annular mounting grooves 130 can seal the threaded connection between the hexagonal nut body 100 and the screw.

[0034] The inner ring portion of the annular elastic nylon insert 200 extends into the inner region of the hexagonal nut body 100, forming an overlap between the inner ring of the annular elastic nylon insert 200 and the inner space portion of the hexagonal nut body 100.

[0035] Working principle: when the hexagon nut body 100 is installed on the screw, the annular elastic nylon insert 200 is in close contact with the surface of the screw, not only generates a larger friction force, and because the annular elastic nylon insert 200 has a certain elasticity and plasticity, it can fill the small gap between the nut and the bolt, so that the hexagon nut body 100 and the screw are connected more tightly, reduce the occurrence of the hexagon nut body 100 loose on the screw due to the existence of the gap, and also can play a sealing role on the threaded connection between the hexagon nut body 100 and the screw, avoid the rust corrosion and other situations occur between the hexagon nut body 100 and the screw threaded connection, the hexagon nut body 100 one end separation state annular gasket 400 cooperate with rectangular spring 300, when the hexagon nut body 100 is tightened, the rectangular spring 300 is compressed after the hexagon nut body 100 is tightened, and the elastic deformation is generated, so that a continuous axial force can be applied between the hexagon nut body 100 and the connected part, the force makes the friction between the hexagon nut body 100 and the screw larger, so as to prevent the hexagon nut body 100 from loosening due to vibration, impact and other external forces, so that the utility model significantly improves the locking performance of the hexagon nut body 100 under the complex working conditions of vibration, impact and other complex working conditions through the synergistic effect of the double locking structure, and the double locking structure significantly reduces the equipment maintenance, repair cost and potential production accident loss caused by the loosening of the hexagon nut, has good economic benefit and market promotion value.

[0036] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A hexagonal flange nut with locking structure comprising a hexagonal nut body (100), characterized in that: The outer wall of the hexagon nut body (100) is provided with a ring-shaped protrusion (120), the bottom end of the ring-shaped protrusion (120) is provided with a ring-shaped groove (121), the lower side of the ring-shaped protrusion (120) is provided with a ring-shaped gasket (400), the ring-shaped gasket (400) and the ring-shaped protrusion (120) are provided with a rectangular spring (300), the top end of the ring-shaped gasket (400) is provided with a first ring-shaped protrusion (410) and a second ring-shaped protrusion (420), and the second ring-shaped protrusion (420) is located on the inner side of the first ring-shaped protrusion (410). The circumferential inner wall of the hexagon nut body (100) is provided with a ring-shaped mounting groove (130) on the upper side and the lower side, and the ring-shaped mounting groove (130) is provided with a ring-shaped elastic nylon insert (200).

2. The hexagonal flange nut with locking structure according to claim 1, characterized in that: One end of the rectangular spring (300) is located between the circumferential inner wall of the first ring-shaped protrusion (410) and the circumferential outer wall of the second ring-shaped protrusion (420), and the other end of the rectangular spring (300) is located in the ring-shaped groove (121).

3. The hexagonal flange nut with locking structure according to claim 1, characterized in that: The circumferential inner wall of the hexagon nut body (100) is provided with a threaded groove (110), and the threaded groove (110) is located between the two ring-shaped mounting grooves (130).

4. The hexagonal flange nut with locking structure according to claim 1, characterized in that: The inner ring part of the ring-shaped elastic nylon insert (200) extends to the inner side area of the hexagon nut body (100), so that the inner ring of the ring-shaped elastic nylon insert (200) and the inner side space of the hexagon nut body (100) partially overlap.

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