Locking seal pull nut

Abstract

The utility model discloses the anti -loose sealed rivet nut in the technical field of rivet nut, including the nut body, the top of nut body is provided with the elastic flange, the top of nut body is seted up to have the inner groove and the bottom of nut body is sealed, the inner wall of inner groove is provided with the thread groove, the appearance of elastic flange is umbrella -shaped, the utility model discloses through setting up elastic flange and sealing element, under the riveting installation state, the umbrella shape of elastic flange is pressed flat, makes elastic flange and section bar form surface contact, and sealing element is extruded and spreads between elastic flange and section bar, forms radial seal, owing to the bottom of nut body is sealed, thereby makes the axial passage of nut body riveting after it is closed, realizes axial seal, and the elastic restoring force of elastic flange and the sealing effect of sealing element have realized good anti -loose sealing effect, alleviateed the pre -tightening force attenuation caused by high and low temperature stress and vibration working condition, has guaranteed the seal of horizontal direction and axial.

Description

Technical Field

[0001] This utility model relates to the field of rivet nut technology, and in particular to anti-loosening and sealing rivet nuts. Background Technology

[0002] Rivet nuts are nuts that are fastened to the connected parts by riveting. They are mainly used for riveting and fixing profiles and are widely used in the assembly of electromechanical and light industrial products such as automobiles, aviation, instruments, furniture, and decoration. They were developed to solve the shortcomings of easy melting of nuts when welding thin metal sheets and thin tubes and are easy to use.

[0003] However, existing technologies have some problems: after riveting, existing rivet nuts are prone to leakage at the riveting gaps. For applications with high sealing requirements, such as battery packs, their sealing effect often fails to meet the requirements. Furthermore, the deformation zone of the rivet nut has low strength. Under high and low temperature cycles and vehicle vibration, creep will occur in the rivet zone, causing the connection strength to decrease and the seal to fail. Therefore, we propose an anti-loosening sealing rivet nut. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides an anti-loosening sealing rivet nut, which improves the anti-loosening and sealing effect through structures such as elastic flanges and sealing elements.

[0005] The purpose of this utility model is achieved as follows: an anti-loosening sealing rivet nut includes a nut body, an elastic flange provided on the top of the nut body, an inner groove opened on the top of the nut body and the bottom of the nut body is sealed, a threaded groove is provided on the inner wall of the inner groove, the elastic flange is umbrella-shaped in appearance, and a sealing element is provided on the bottom surface of the elastic flange.

[0006] Optionally, the bottom surface of the elastic flange is concave, and an angle is formed between the bottom surface of the elastic flange and the nut body.

[0007] Optionally, the nut body includes an upper deformable section and a lower straight cylindrical section, with the threaded groove disposed inside the straight cylindrical section.

[0008] Optionally, square grooves are provided on the outside of the deformable section, and the square grooves are spaced apart on the surface of the deformable section.

[0009] Optionally, the bottom of the straight section is horizontal, and the edge of the bottom of the straight section is chamfered.

[0010] Optionally, the elastic flange is disposed at the top of the deformable section, and the bottom edge of the elastic flange is provided with a rounded corner.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: This invention, by setting up an elastic flange and a sealing element, allows the umbrella shape of the elastic flange to be flattened during riveting installation, making the elastic flange and the profile form a surface contact. The sealing element is also compressed and spread between the elastic flange and the profile, forming a radial seal. Since the bottom of the nut body is sealed, the axial channel of the nut body is closed after riveting, achieving an axial seal. The elastic restoring force of the elastic flange and the sealing effect of the sealing element achieve a good anti-loosening sealing effect, achieving triple anti-leakage technology guarantee, mitigating the preload attenuation caused by high and low temperature stress and vibration conditions, and ensuring horizontal and axial sealing. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0013] Figure 1 This is a structural schematic diagram provided by this utility model.

[0014] Figure 2 This is a cross-sectional structural diagram provided by this utility model.

[0015] Figure 3 This is a schematic diagram of the structure after the inserted profile is provided by this utility model.

[0016] Figure 4 This is a schematic diagram of the structure provided by this utility model for riveting onto a profile.

[0017] Figure 5 yes Figure 2 A magnified schematic diagram of the structure at point A in the middle.

[0018] In the diagram: 1. Nut body; 101. Deformed section; 102. Straight section; 103. Square groove; 2. Flexible flange; 3. Inner groove; 4. Threaded groove; 5. Seal; 6. Chamfer; 7. Rounded corner. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] like Figures 1 to 5As shown, the anti-loosening sealing rivet nut provided in this embodiment of the utility model includes a nut body 1, an elastic flange 2 provided on the top of the nut body 1, an inner groove 3 provided on the top of the nut body 1 and the bottom of the nut body 1 is sealed, a threaded groove 4 is provided on the inner wall of the inner groove 3, the elastic flange 2 is umbrella-shaped, and a sealing element 5 is coated on the bottom surface of the elastic flange 2.

[0021] It should be noted that the sealing element 5 can be a rubber gasket or a coated sealant, etc. In the riveted installation state, the umbrella shape of the elastic flange 2 is flattened, so that the elastic flange 2 and the profile form a surface contact, and the sealing element 5 is squeezed and spread between the elastic flange 2 and the profile to form a radial seal. Since the bottom of the nut body 1 is sealed, the axial channel of the nut body 1 is closed after riveting, thus achieving an axial seal. The elastic restoring force of the elastic flange 2 and the sealing effect of the sealing element 5 achieve a good anti-loosening sealing effect.

[0022] Furthermore, the bottom surface of the elastic flange 2 is concave, and an angle is formed between the bottom surface of the elastic flange 2 and the nut body 1.

[0023] The included angle is between 60° and 90°. After riveting, the elastic flange 2 is flattened, so that the included angle becomes 90°. The flattened elastic flange 2 can provide a continuous elastic preload due to its own elastic deformation to compensate for the relaxation caused by vibration or creep after riveting.

[0024] Furthermore, the nut body 1 includes an upper deformable section 101 and a lower straight cylindrical section 102, with the threaded groove 4 disposed inside the straight cylindrical section 102.

[0025] Furthermore, square grooves 103 are provided on the outside of the deformable section 101, and the square grooves 103 are distributed at intervals on the surface of the deformable section 101.

[0026] The square groove 103 forms a structural weak point on the surface of the deformed section 101, thereby significantly reducing the tensile force required to deform it. The uniformly arranged square grooves 103 can produce symmetrical and uniform radial expansion, so that the support surface formed on the profile is uniformly stressed and the connection is more stable.

[0027] Furthermore, the bottom of the straight section 102 is horizontal, and the bottom edge of the straight section 102 is chamfered 6.

[0028] The chamfer 6 serves as a guide for the nut body 1, allowing it to be easily inserted into the mounting hole of the profile, facilitating assembly.

[0029] Furthermore, the elastic flange 2 is located at the top of the deformable section 101, and the bottom edge of the elastic flange 2 is provided with a rounded corner 7.

[0030] With the setting of fillet 7, when the elastic flange 2 is flattened, the edge of the elastic flange 2 slides outward on the profile. Fillet 7 can provide a smooth unfolding effect and avoid the edge of the elastic flange 2 from deforming due to greater resistance, which would affect the sealing effect.

[0031] Working principle and usage process of this utility model: After the nut body 1 is inserted into the profile, it is riveted by the engagement of the external screw and the threaded groove 4, thereby causing the deformed section 101 to collapse and deform, such as Figure 4 As shown, the nut body 1 is riveted to the profile. In the riveted installation state, the umbrella shape of the elastic flange 2 is flattened, so that the elastic flange 2 and the profile form a surface contact. The flattened elastic flange 2 can provide a continuous elastic preload due to its own elastic deformation to compensate for the loosening caused by vibration or creep after riveting. The sealing element 5 is squeezed and spread between the elastic flange 2 and the profile to form a radial seal. Since the bottom of the nut body 1 is sealed, the axial channel of the nut body 1 is closed after riveting, thus achieving an axial seal. The elastic restoring force of the elastic flange 2 and the sealing effect of the sealing element 5 achieve a good anti-loosening sealing effect.

[0032] The above description of the embodiments is only for the purpose of helping to understand the method and core idea of ​​this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made to this utility model without departing from the principle of this utility model, and these improvements and modifications also fall within the protection scope of the claims of this utility model.

Claims

1. A locking and sealing rivet nut, comprising a nut body (1), wherein a resilient flange (2) is provided on the top of the nut body (1), characterized in that: The nut body (1) has an inner groove (3) at the top and the bottom of the nut body (1) is sealed. The inner wall of the inner groove (3) is provided with a threaded groove (4). The elastic flange (2) has an umbrella-shaped appearance and a sealing element (5) is provided on the bottom surface of the elastic flange (2).

2. The anti-loosening sealing rivet nut according to claim 1, characterized in that: The bottom surface of the elastic flange (2) is concave, and there is an angle between the bottom surface of the elastic flange (2) and the nut body (1).

3. The anti-loosening sealing rivet nut according to claim 1, characterized in that: The nut body (1) includes an upper deformable section (101) and a lower straight section (102), and the threaded groove (4) is disposed inside the straight section (102).

4. The anti-loosening sealing rivet nut according to claim 3, characterized in that: The deformable segment (101) has square grooves (103) on its outside, and the square grooves (103) are spaced apart on the surface of the deformable segment (101).

5. The anti-loosening sealing rivet nut according to claim 3, characterized in that: The bottom of the straight section (102) is horizontal, and the bottom edge of the straight section (102) is chamfered (6).

6. The anti-loosening sealing rivet nut according to claim 3, characterized in that: The elastic flange (2) is located at the top of the deformable section (101), and the bottom edge of the elastic flange (2) is provided with a rounded corner (7).

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