A rivet nut

Abstract

The utility model discloses a riveting nut, including main nut, the upper portion integral type fixed mounting of main nut has deformation outer tube, the upper portion integral type fixed mounting of deformation outer tube has the connecting ring, the outer surface of connecting ring is provided with external thread, the inside of connecting ring is provided with four second limit hole, the upper portion mounting of connecting ring has the skirt ring, the inside upper portion of skirt ring is provided with the accommodation groove. The utility model discloses a whole riveting nut is decomposed into with detachable skirt ring and the connecting ring of bearing thread function and main nut and deformation outer tube constitute the nut structure. Two detachable connections are realized through the thread pair, realize the functional separation of riveting nut, when needing maintenance or replacement, only need to spin out skirt ring from the connecting ring, can realize the nondestructive dismounting to the technical problem of poor maintainability and parent material damage of traditional riveting nut caused by one-time riveting is thoroughly solved.

Description

Technical Field

[0001] This utility model relates to the field of riveting nut technology, specifically a riveting nut. Background Technology

[0002] Rivet nuts, as a type of single-sided press-fit fastener, are widely used in sheet metal, chassis and cabinet, aerospace and automotive industries to provide reliable internal threaded connections on thin-walled components. Traditional rivet nuts typically have an integrated structure, consisting of a nut body with internal threads and a skirt for riveting. During installation, the rivet nut is placed into a pre-drilled hole in the sheet metal, and an axial tensile force is applied to the nut body using a special riveting tool, causing the skirt to plastically deform and adhere tightly to the back of the sheet metal, thus forming a strong connection.

[0003] Once riveted, the plastic deformation of the skirt caused by existing rivet nuts is permanent. Removing these nuts is extremely difficult when equipment maintenance, replacement, or upgrades are required. Destructive methods such as drilling and grinding are often used to forcibly remove them, which not only completely damages the nut itself but also easily causes irreversible damage to expensive base plate components, such as scratches, hole wall tears, or hole diameter damage, significantly increasing maintenance costs and time. Therefore, we propose a new type of rivet nut. Utility Model Content

[0004] The purpose of this invention is to provide a riveting nut that addresses the problem described in the background art: once riveting is completed, the plastic deformation of the skirt in existing riveting nuts is permanent. Removing the riveting nut is extremely difficult when equipment maintenance, replacement, or upgrades are required. It typically requires destructive methods such as drilling or grinding to forcibly remove it. This process not only completely damages the nut itself but also easily causes irreversible damage to expensive motherboard components, such as scratches, hole wall tears, or hole diameter damage, significantly increasing maintenance costs and time.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a riveting nut, comprising:

[0006] The main nut has a deformable outer cylinder integrally fixedly mounted on its upper part, and a connecting ring integrally fixedly mounted on its upper part. The outer surface of the connecting ring is provided with external threads, and four second limiting holes are opened inside the connecting ring. A skirt ring is installed above the connecting ring, and a receiving groove is opened inside the upper part of the skirt ring. The bottom of the receiving groove is provided with four first limiting holes corresponding one-to-one with the second limiting holes. A limiting ring is installed inside the receiving groove, and four limiting posts corresponding one-to-one with the first limiting holes are fixedly mounted at the bottom of the limiting ring. A connecting groove is opened inside the lower part of the skirt ring, and the inner wall of the connecting groove is provided with internal threads corresponding to the external threads.

[0007] As a preferred embodiment of the present invention, the shape and size of the connecting ring match the shape and size of the inside of the connecting groove, and the connecting ring is threadedly connected to the skirt ring through the external thread and the internal thread.

[0008] In a preferred embodiment of the present invention, the limiting post passes through the interior of the first limiting hole and the second limiting hole in sequence, wherein the diameter of the limiting post matches the diameter of the interior of the first limiting hole and the diameter of the interior of the second limiting hole.

[0009] As a preferred embodiment of the riveting nut of this utility model, the shape and size of the limiting ring match the shape and size of the inside of the receiving groove.

[0010] As a preferred embodiment of the riveting nut of this utility model, the main nut further comprises:

[0011] A bolt, the threads of which are installed inside the main nut.

[0012] As a preferred embodiment of the riveting nut of this utility model, the bolt passes through the interior of the limiting ring, the skirt ring, the connecting ring and the deformable outer cylinder in sequence.

[0013] Compared with the prior art, the present invention provides a riveting nut, which has the following advantages:

[0014] This invention decomposes the integral riveting nut into a nut structure consisting of a detachable skirt ring, a connecting ring that bears the threaded function, a main nut, and a deformable outer cylinder. The two are detachably connected via a threaded pair, achieving functional separation of the riveting nut. When maintenance or replacement is required, simply unscrewing the skirt ring from the connecting ring allows for non-destructive disassembly, thus completely solving the technical problems of poor maintainability and damage to the base material caused by the one-time riveting of traditional riveting nuts. Attached Figure Description

[0015] Figure 1This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the exploded structure of this utility model;

[0017] Figure 3 This is a schematic diagram of the connecting groove structure of this utility model.

[0018] In the diagram: 1. Main nut; 2. Deformed outer cylinder; 3. Skirt ring; 4. Limiting ring; 5. Bolt; 6. Limiting post; 7. Receiving groove; 8. First limiting hole; 9. Connecting ring; 10. Second limiting hole; 11. External thread; 12. Connecting groove; 13. Internal thread. 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] Please see Figure 1-3 A riveting nut includes a main nut 1, a deformable outer cylinder 2 integrally fixedly installed on the upper part of the main nut 1, a connecting ring 9 integrally fixedly installed on the upper part of the deformable outer cylinder 2, an external thread 11 on the outer surface of the connecting ring 9, four second limiting holes 10 inside the connecting ring 9, a skirt ring 3 installed on the upper part of the connecting ring 9, a receiving groove 7 inside the upper part of the skirt ring 3, four first limiting holes 8 corresponding one-to-one with the second limiting holes 10 at the bottom of the receiving groove 7, a limiting ring 4 installed inside the receiving groove 7, four limiting posts 6 corresponding one-to-one with the first limiting holes 8 fixedly installed at the bottom of the limiting ring 4, a connecting groove 12 inside the lower part of the skirt ring 3, and an internal thread 13 corresponding to the external thread 11 on the inner wall of the connecting groove 12.

[0021] In this implementation scheme, the integral riveting nut is decomposed into a nut structure consisting of a detachable skirt ring 3, a threaded connecting ring 9, a main nut 1, and a deformable outer cylinder 2. The two are detachably connected via a threaded pair, achieving functional separation of the riveting nut. When maintenance or replacement is required, simply unscrewing the skirt ring 3 from the connecting ring 9 allows for non-destructive disassembly, thus completely solving the technical problems of poor maintainability and damage to the base material caused by the one-time riveting of traditional riveting nuts.

[0022] Furthermore:

[0023] In an optional embodiment, the shape and size of the connecting ring 9 match the shape and size of the inside of the connecting groove 12, and the connecting ring 9 is threadedly connected to the skirt ring 3 by external thread 11 and internal thread 13.

[0024] In this implementation scheme: by precisely matching the shape and dimensions of the connecting ring 9 and the connecting groove 12, accurate alignment is ensured during the screwing process, effectively avoiding misalignment and jamming during installation. Based on this, the cooperation of the external thread 11 and the internal thread 13 achieves a secure and reversible connection between the connecting ring 9 and the skirt ring 3. This combined structure not only ensures stable force transmission during riveting, making the riveting process more reliable, but also fundamentally gives the entire riveting nut a detachable function, allowing for easy separation of the core component from the one-time locked skirt ring 3 during maintenance, greatly improving the product's maintainability.

[0025] Furthermore:

[0026] In an optional embodiment, the limiting post 6 passes through the interior of the first limiting hole 8 and the second limiting hole 10 in sequence. The diameter of the limiting post 6 matches the diameter of the interior of the first limiting hole 8 and the diameter of the limiting post 6 matches the diameter of the interior of the second limiting hole 10.

[0027] In this implementation scheme, the precise fit between the limiting post 6 and the hole constitutes a highly efficient anti-rotation mechanism. When the limiting post 6 passes through both the first limiting hole 8 and the second limiting hole 10 with a matching diameter, a strong circumferential constraint is established between the skirt ring 3 and the connecting ring 9. This design effectively transmits the circumferential torque generated during riveting and use directly through the limiting post 6, fundamentally preventing relative rotation between the two due to force, ensuring the stability and integrity of the threaded connection, and thus guaranteeing the long-term reliability of the entire riveting nut under vibration and its operability during disassembly.

[0028] Furthermore:

[0029] In an optional embodiment, the shape and dimensions of the limiting ring 4 match the shape and dimensions of the interior of the receiving groove 7.

[0030] In this implementation scheme: the design achieves precise positioning and guidance by ensuring that the shape and size of the limiting ring 4 are precisely matched with the receiving groove 7, thus ensuring that the limiting ring 4 can be quickly and accurately embedded in the predetermined position during installation, thereby driving the limiting post 6 at its bottom to be precisely aligned with the first limiting hole 8 below.

[0031] Furthermore:

[0032] In an optional embodiment, the main nut 1 further includes:

[0033] Bolt 5, whose thread is installed inside the main nut 1, passes through the limiting ring 4, skirt ring 3, connecting ring 9 and deformable outer cylinder 2 in sequence.

[0034] In this implementation scheme: Bolt 5 passes through limiting ring 4, skirt ring 3, connecting ring 9 and deformed outer cylinder 2, and finally engages with main nut 1. This design constitutes an integrated force transmission channel.

[0035] Working principle: When using this riveting nut, first insert the main nut 1 and deformed outer cylinder 2 from one side of the plate into the pre-drilled hole, so that the bottom bearing surface of the skirt ring 3 is in contact with the plate surface. Then, insert the bolt 5 as an installation tool, passing it through the limiting ring 4, the skirt ring 3 in sequence, and finally screwing it into the threaded hole of the main nut 1. As the bolt 5 is continuously screwed in, its head applies pressure to the limiting ring 4, thereby pushing the main nut 1 upward to generate axial displacement. During this process, the deformed outer cylinder 2 undergoes plastic deformation under strong axial tensile force, bulging outward to form a rivet head, which works in conjunction with the skirt ring 3 above the plate to firmly clamp the plate between the two, completing the riveting. Disassembly is the reverse process: first, turn the bolt 5 in the opposite direction to remove it from the main nut 1 and take it out. Then, remove the limiting ring 4 upward, so that the limiting post 6 at its bottom disengages from the first limiting hole 8 and the second limiting hole 10, releasing the axial limitation. Then, rotate the skirt ring 3 to unscrew the external thread 11 of the connecting ring 9 from the internal thread 13 of the connecting groove 12, thereby separating the skirt ring 3 from the connecting ring 9. Finally, the rivet nut can be removed from the plate, completing non-destructive disassembly. This is the working principle of the rivet nut.

[0036] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A riveting nut, characterized in that, include: A main nut (1) is integrally fixedly installed on the top of the main nut (1), and a connecting ring (9) is integrally fixedly installed on the top of the deformed outer cylinder (2). The outer surface of the connecting ring (9) is provided with an external thread (11). The inside of the connecting ring (9) is provided with four second limiting holes (10). A skirt ring (3) is installed on the top of the connecting ring (9). A receiving groove (7) is opened on the top of the inside of the skirt ring (3). The bottom of the receiving groove (7) is provided with four first limiting holes (8) corresponding one-to-one with the second limiting holes (10). A limiting ring (4) is installed inside the receiving groove (7). The bottom of the limiting ring (4) is fixedly installed with four limiting posts (6) corresponding one-to-one with the first limiting holes (8). A connecting groove (12) is opened on the bottom of the inside of the skirt ring (3). The inner wall of the connecting groove (12) is provided with an internal thread (13) corresponding to the external thread (11).

2. A riveting nut according to claim 1, characterized in that, The shape and size of the connecting ring (9) match the shape and size of the inside of the connecting groove (12), and the connecting ring (9) is threadedly connected to the skirt ring (3) through the external thread (11) and the internal thread (13).

3. A riveting nut according to claim 1, characterized in that, The limiting post (6) passes through the interior of the first limiting hole (8) and the second limiting hole (10) in sequence. The diameter of the limiting post (6) matches the diameter of the interior of the first limiting hole (8) and the diameter of the interior of the second limiting hole (10).

4. A riveting nut according to claim 1, characterized in that, The shape and size of the limiting ring (4) match the shape and size of the inside of the receiving groove (7).

5. A riveting nut according to claim 1, characterized in that, The main nut (1) is also provided with: Bolt (5), whose threads are installed inside the main nut (1).

6. A riveting nut according to claim 5, characterized in that, The bolt (5) passes through the interior of the limiting ring (4), the skirt ring (3), the connecting ring (9), and the deformable outer cylinder (2) in sequence.

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