Anti-loose pull rivet nut

Abstract

The utility model relates to the technical field of fastener, and disclose a kind of anti-loose rivet nut, including nut main body, internally fixed mounting has inside thread sleeve in nut main body, and nut main body includes nut seat, and the anti-loose cover is integrally formed on the top of nut seat, and the anti-loose tooth slot of several radial distribution is set on the anti-loose cover.The utility model sets up the anti-loose tooth slot on the anti-loose cover and the anti-slip boss of nut seat bottom, and anti-loose tooth slot is embedded workpiece surface when riveting, and anti-slip boss is closely attached with workpiece, and the loosening of nut under vibration, impact working condition is effectively avoided by double anti-loose structure, and the reliability of connection is significantly improved.

Description

Technical Field

[0001] This utility model relates to the field of fastener technology, specifically to an anti-loosening rivet nut. Background Technology

[0002] Rivet nuts are fasteners commonly used for connecting sheet metal and thin plate workpieces, achieving a secure connection through a riveting process. However, existing anti-loosening rivet nuts still have the following problems in use: The anti-loosening performance is poor, and the nut is prone to loosening under conditions such as vibration and impact, which affects the reliability of the connection. The structure is not strong enough, especially the corners, which are prone to damage during installation or use. In addition, the fit with the workpiece is not good enough, and the connection stability needs to be improved. Utility Model Content

[0003] To address the shortcomings of existing technologies, this utility model provides an anti-loosening rivet nut, which is equipped with an anti-loosening toothed groove, corner reinforcement blocks, anti-slip protrusions, and an internal threaded sleeve, thus solving the problems of insufficient anti-loosening performance and poor structural strength and connection stability mentioned in the background technology.

[0004] To achieve the above objectives, this utility model provides the following technical solution: an anti-loosening rivet nut, comprising a nut body, wherein an internal threaded sleeve is fixedly installed inside the nut body.

[0005] The nut body includes a nut seat, and an anti-loosening cover is integrally formed on the top of the nut seat. The anti-loosening cover has several radially distributed anti-loosening tooth grooves, which can be embedded into the surface of the workpiece during riveting to enhance the anti-loosening effect.

[0006] Each corner of the anti-loosening cover is equipped with a corner reinforcement block, which can improve the structural strength of the corners of the anti-loosening cover and prevent damage during installation.

[0007] A central hole is provided between the center positions of the upper and lower side walls of the nut seat, and the internal threaded sleeve is fixedly connected in the central hole. The internal threaded sleeve is used to cooperate with the bolt to achieve a threaded connection.

[0008] The bottom of the nut seat, located outside the central hole, is provided with several anti-slip protrusions arranged in a circular array. The anti-slip protrusions can increase the friction with the workpiece and prevent the nut from rotating and loosening.

[0009] As a further improvement of this utility model, the anti-loosening toothed groove is in six groups, and each group of the anti-loosening toothed groove is evenly distributed on the anti-loosening cover to ensure uniform force during riveting.

[0010] As a further improvement of this utility model: the corner reinforcement block has an arc-shaped structure, and the corner reinforcement block, the nut seat, and the anti-loosening cover are integrally formed, which improves the overall structural strength and stability.

[0011] As a further improvement of this utility model: the anti-slip protrusion has a serrated structure, and the tips of the anti-slip protrusion face the outside of the nut seat. The serrated structure can enhance the engagement with the workpiece and further improve the anti-loosening performance.

[0012] As a further improvement of this utility model, the outer diameter of the anti-loosening cover is larger than the maximum outer diameter of the nut seat, which increases the contact area with the workpiece and improves the connection stability.

[0013] As a further improvement of this utility model, the upper and lower openings of the internal threaded sleeve are both chamfered, which facilitates the screwing in of the bolt and reduces stress concentration.

[0014] Compared with the prior art, the beneficial effects of this utility model are: In this invention, by setting anti-loosening toothed grooves on the anti-loosening cover and anti-slip protrusions at the bottom of the nut seat, the anti-loosening toothed grooves are embedded in the workpiece surface during riveting, and the anti-slip protrusions are in close contact with the workpiece. The double anti-loosening structure effectively prevents the nut from loosening under vibration and impact conditions, and significantly improves the reliability of the connection.

[0015] In this invention, the corner reinforcement blocks enhance the structural strength of the anti-loosening cover's corners, preventing damage to the corners during installation or use. Simultaneously, the larger outer diameter of the anti-loosening cover and the design of the anti-slip protrusions improve the fit with the workpiece and connection stability, ensuring the performance of the rivet nut. Attached Figure Description

[0016] Figure 1 The overall three-dimensional structure of this utility model Figure 1 ; Figure 2 The overall three-dimensional structure of this utility model Figure 2 ; Figure 3 The three-dimensional nut body of this utility model Figure 1 ; Figure 4 The three-dimensional nut body of this utility model Figure 2 .

[0017] In the diagram: 1. Nut body; 2. Internal threaded sleeve; 11. Nut seat; 12. Anti-loosening cap; 13. Anti-loosening toothed groove; 14. Corner reinforcement block; 15. Center hole; 16. Anti-slip protrusion. Detailed Implementation

[0018] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.

[0019] In the description of this utility model, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and 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, and therefore should not be construed as a limitation of this utility model. In addition, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0020] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0021] Please see Figures 1-4 In this embodiment of the utility model, an anti-loosening rivet nut includes a nut body 1, and an internal threaded sleeve 2 is fixedly installed inside the nut body 1.

[0022] The nut body 1 includes a nut seat 11, and an anti-loosening cover 12 is integrally formed on the top of the nut seat 11. The anti-loosening cover 12 has several radially distributed anti-loosening tooth grooves 13. The anti-loosening tooth grooves 13 can be embedded into the surface of the workpiece during riveting to enhance the anti-loosening effect.

[0023] Each corner of the anti-loosening cover 12 is provided with a corner reinforcement block 14, which can improve the structural strength of the corners of the anti-loosening cover 12 and prevent damage during installation.

[0024] A central hole 15 is provided between the center positions of the upper and lower side walls of the nut seat 11. An internal threaded sleeve 2 is fixedly connected in the central hole 15. The internal threaded sleeve 2 is used to cooperate with the bolt to achieve a threaded connection.

[0025] The bottom of the nut seat 11, located outside the central hole 15, is provided with a number of anti-slip protrusions 16 arranged in a ring array. The anti-slip protrusions 16 can increase the friction with the workpiece and prevent the nut from rotating and loosening.

[0026] There are six sets of anti-loosening toothed grooves 13, and each set of anti-loosening toothed grooves 13 is evenly distributed on the anti-loosening cover 12 to ensure uniform force during riveting.

[0027] The corner reinforcement block 14 has an arc-shaped structure, and the corner reinforcement block 14, the nut seat 11, and the anti-loosening cover 12 are integrally formed. The integrally formed structure improves the overall structural strength and stability.

[0028] The anti-slip protrusion 16 has a serrated structure, and the tips of the teeth of the anti-slip protrusion 16 face the outside of the nut seat 11. The serrated structure can enhance the engagement with the workpiece and further improve the anti-loosening performance.

[0029] The outer diameter of the anti-loosening cover 12 is larger than the maximum outer diameter of the nut seat 11, which increases the contact area with the workpiece and improves the connection stability.

[0030] The upper and lower ends of the internal threaded sleeve 2 are chamfered. The chamfer makes it easier to screw the bolt in and reduces stress concentration.

[0031] The working principle of this utility model is as follows: During use, the rivet nut is placed in the pre-drilled mounting hole of the workpiece, and a rivet tool is used to rivet the nut body 1. During the rivet process, the anti-loosening toothed groove 13 on the anti-loosening cover 12 embeds into the workpiece surface, and the anti-slip protrusion 16 at the bottom of the nut seat 11 fits tightly against the workpiece, achieving initial anti-loosening. The corner reinforcement block 14 enhances the structural strength of the corners of the anti-loosening cover 12, preventing damage to the corners during rivetry. After rivetry, the internal thread of the internal threaded sleeve 2 can mate with the bolt, achieving a stable connection between the components to be connected. The chamfers at both ends of the internal threaded sleeve 2 facilitate the smooth screwing in of the bolt, reducing installation resistance. In subsequent use, the anti-loosening toothed groove 13 and the anti-slip protrusion 16 work together to effectively prevent the nut from loosening under vibration, impact, and other conditions, ensuring the reliability and stability of the connection.

[0032] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A locking rivet nut, comprising a nut body (1), wherein an internal threaded sleeve (2) is fixedly installed inside the nut body (1), characterized in that: The nut body (1) includes a nut seat (11), and the top of the nut seat (11) is integrally formed with an anti-loosening cover (12). The anti-loosening cover (12) has several radially distributed anti-loosening toothed grooves (13). Each corner of the anti-loosening cover (12) is provided with a corner reinforcement block (14). A central hole (15) is provided between the center positions of the upper and lower side walls of the nut seat (11), and the internal threaded sleeve (2) is fixedly connected in the central hole (15); The bottom of the nut seat (11) and outside the central hole (15) is provided with a number of anti-slip protrusions (16) arranged in a ring array.

2. The anti-loosening rivet nut according to claim 1, characterized in that: The anti-loosening toothed grooves (13) are in six groups, and each group of anti-loosening toothed grooves (13) is evenly distributed on the anti-loosening cover (12).

3. The anti-loosening rivet nut according to claim 1, characterized in that: The corner reinforcement block (14) has an arc-shaped structure, and the corner reinforcement block (14) is integrally formed with the nut seat (11) and the anti-loosening cover (12).

4. The anti-loosening rivet nut according to claim 1, characterized in that: The anti-slip protrusion (16) has a serrated structure, and the tips of the anti-slip protrusion (16) face the outside of the nut seat (11).

5. The anti-loosening rivet nut according to claim 1, characterized in that: The outer diameter of the anti-loosening cap (12) is greater than the maximum outer diameter of the nut seat (11).

6. The anti-loosening rivet nut according to claim 1, characterized in that: The internal threaded sleeve (2) has chamfers at both the upper and lower openings.

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