Waterproof rivet nut

Abstract

The invention relates to the technical field of fasteners, and discloses a waterproof rivet nut which comprises a nut body, a waterproof mechanism is connected to the outer wall of the nut body, a fixing mechanism is mounted at a port of the nut body, an internal thread is formed in the inner wall of the nut body, a sealing gasket and a waterproof belt are connected to the upper portion of the internal thread, and the waterproof mechanism comprises sealant, a waterproof strip and a sealing ring. The sealing glue is adhered and fixed to the nut connector, the waterproof strips are arranged on the outer wall of the nut in an up-down staggered mode, the fixing mechanism comprises a fixing ring, external threads and fixing strips, the fixing strips are arranged in gaps formed by the external threads and the fixing ring in a penetrating mode, and the tops of the external threads are covered with gaskets. By means of the multi-layer sealing structure of the waterproof mechanism and hollow filling of the waterproof belt, the problem that a water source is prone to permeating and leaking is effectively solved, the fixing strips in the fixing mechanism are extruded to expand outwards, and the clamping strength and the structural stability between the nut and the connecting piece are remarkably enhanced.

Description

Technical Field

[0001] This invention relates to the field of fastener technology, and more particularly to a waterproof rivet nut. Background Technology

[0002] In modern industrial manufacturing and construction engineering, rivet nuts are an important fastener that can provide reliable internal threads in environments where welding or tapping is not possible on one side, such as thin plates or pipes. They are widely used. Traditionally, rivet nuts are plastically deformed by the axial tension of a rivet gun, which causes the nut body to expand or bulge to clamp the connecting parts, thereby achieving a fast and stable connection.

[0003] However, existing rivet nut technologies have significant structural shortcomings in practical applications. First, traditional riveting methods rely primarily on the plastic deformation of the material itself for clamping. This limits the strength of the connection between the rivet nut and the connector to the load-bearing capacity of the nut and the material itself. Furthermore, under long-term vibration or uneven stress, the connection can loosen, affecting the overall structural stability. Second, after installation, traditional rivet nuts cannot achieve a completely seamless fit between the nut surface and the connecting hole. Water or moisture can seep into the connector from the nut's interface or gaps in the riveting area, causing corrosion of the connector or nut itself. Additionally, if the fastening area requires high waterproofing, water seepage can cause leaks, severely impacting user experience and safety. Moreover, while some existing solutions incorporate anti-rotation structures such as vertical stripes on the nut's outer wall, these structures offer limited effectiveness in improving the sealing of the connection. This necessitates a novel structural design that, while ensuring fastening strength, introduces a multi-layered, highly reliable sealing mechanism to completely solve the water seepage problem at the fastener connection. Therefore, this invention proposes a waterproof rivet nut to overcome the shortcomings of the prior art. Summary of the Invention

[0004] In view of the problems in the existing technology of rivet nuts, such as poor waterproof sealing effect after fixed connection, which makes water easy to seep and leak, and insufficient connection stability and easy loosening after long-term use due to the reliance on material deformation for clamping, the present invention aims to provide a waterproof rivet nut with an improved structure that can effectively solve the above problems.

[0005] This invention provides a waterproof rivet nut, comprising: a nut with vertical grooves on its surface, a waterproof mechanism fixedly connected to the outer wall of the nut, a fixing mechanism fixedly installed at the nut port, and an internal thread on the inner wall of the lower port of the nut; and a sealing gasket and a waterproof strip connected above the internal thread.

[0006] The waterproofing mechanism has a multi-layered sealing structure consisting of sealant, waterproof strip, and sealing ring. The sealant is bonded and fixed at the nut interface, the waterproof strip is arranged in an alternating pattern on the outer wall of the nut, and the sealing ring is located below the waterproof strip. The waterproof tape is set below the sealing gasket and has a hollow tubular structure.

[0007] Furthermore, the fixing mechanism includes a fixing ring, an external thread, a washer, a fixing strip, and a connecting plate; the fixing ring is fixedly installed inside the nut, the external thread is threadedly connected to the fixing ring, the fixing strip is inserted into the gap formed between the external thread and the fixing ring, the connecting plate is integrally formed on the top surface of the external thread, and the washer covers the top of the external thread; the waterproof tape is inserted into the bottom of the nut.

[0008] Preferably, a fixing groove is provided below the nut port. The fixing groove is an annular groove structure. The sealing ring is positioned above the fixing groove. The sealing ring is used to deform under pressure during installation to isolate external water sources.

[0009] Preferably, the inner wall of the retaining ring is provided with anti-loosening grooves, which are multiple parallel grooves. The anti-loosening grooves are used to increase frictional resistance after the external thread is screwed into the retaining ring to prevent the retaining ring from falling off.

[0010] Preferably, the waterproof strip is made of elastic rubber material, and the staggered arrangement of the waterproof strip is used to extend the water penetration path. The sealant is applied to the edge of the top interface of the nut to prevent water from vertically entering from above.

[0011] Preferably, the waterproof tape is a deformable soft material, and the outer diameter of the waterproof tape is adapted to the inner diameter of the bottom of the nut. The waterproof tape is used to be squeezed and deformed after the nut is fixed by force to fill the gap at the bottom of the nut.

[0012] Preferably, the fixing strips are in multiple sets and evenly distributed around the external thread. The fixing strips are used to fill the gap between the external thread and the fixing ring. When the fixing strips are squeezed and misaligned, they expand outward to enhance the locking strength of the fixing mechanism.

[0013] Preferably, the surface of the connecting plate is provided with a groove or protrusion for accommodating a rotating tool, the connecting plate is used to drive the external thread to rotate relative to the fixed ring, and the gasket material is sealing rubber.

[0014] Preferably, the vertical stripes are evenly distributed along the axial direction of the nut on the outer surface of the nut. The vertical stripes are used to provide circumferential friction after the rivet nut is installed into the hole to prevent the nut from rotating.

[0015] The present invention has the following beneficial effects: 1. This invention solves the problems of easy water penetration and weak sealing effect after the existing rivet nuts are fixed by setting up a multi-level waterproof mechanism composed of sealant, waterproof strip and sealing ring and hollow waterproof strip. It achieves the effect of significantly improving the overall sealing performance of the structure and effectively preventing corrosion and leakage.

[0016] 2. This invention, through the design of a fixing mechanism, utilizes the threaded engagement between the external thread and the fixing ring to drive the fixing strip to expand outward, thus solving the problem that the existing rivet nuts rely solely on material deformation for clamping, resulting in limited fixing strength. This achieves the effects of enhanced engagement strength between connecting parts, improved structural stability, and improved vibration resistance and anti-loosening performance. Attached Figure Description

[0017] Figure 1 This is a perspective view of a waterproof rivet nut proposed in this invention; Figure 2 This is a front view of a waterproof rivet nut proposed in this invention; Figure 3 This is a cross-sectional view of a waterproof rivet nut proposed in this invention; Figure 4 This is a structural exploded view of a waterproof rivet nut proposed in this invention; Figure 5 This is a partial structural exploded view of a waterproof rivet nut proposed in this invention; Figure 6 This is a partial structural diagram of a waterproof rivet nut proposed in this invention.

[0018] Legend: 1. Nut; 2. Waterproofing mechanism; 201. Sealant; 202. Waterproof strip; 203. Sealing ring; 204. Fixing groove; 205. Sealing gasket; 206. Waterproof tape; 207. Internal thread; 3. Fixing mechanism; 301. Fixing ring; 302. Anti-loosening strip; 303. External thread; 304. Washer; 305. Fixing strip; 306. Connecting plate; 4. Vertical stripe. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] Example: Please refer to Figures 1 to 6This invention provides a waterproof rivet nut, which aims to solve the technical problems of insufficient waterproofing after fixed connection in existing rivet nut technology, which leads to easy water seepage and leakage, as well as insufficient structural connection stability.

[0021] Please refer to Figure 2 , Figure 3 and Figure 4 As shown, a waterproof rivet nut includes a nut 1 as the main support structure, a waterproof mechanism 2 fixedly connected to the outer wall of the nut 1 for providing sealing protection, a fixing mechanism 3 fixedly installed at the port of the nut 1 for enhancing the connection firmness, and an internal thread 207 formed on the inner wall of the lower port of the nut 1 for subsequent connection and mating. The nut 1 serves as the mounting base and core carrier of the entire device. The nut 1 is used to support the waterproof mechanism 2 and the fixing mechanism 3 and is inserted into the hole to be installed. The waterproof mechanism 2 fits tightly against the external interface and connection gap of the nut 1. The waterproof mechanism 2 is used to pass through multiple layers... The sealing component prevents external water from seeping into the interior. The fixing mechanism 3 extends at least partially into the nut 1. The fixing mechanism 3 is used to prevent the nut 1 from loosening or falling off after installation through the expansion and engagement of the mechanical structure. The internal thread 207 is a standard thread structure. The internal thread 207 is used to provide an interface for screwing and fixing with other external bolt components. Vertical grooves 4 are evenly distributed along the axial direction on the surface of the nut 1. The vertical grooves 4 are used to provide circumferential frictional resistance after the nut 1 is inserted into the mounting hole to play a role in preventing rotation and positioning. The nut 1, the waterproof mechanism 2, and the fixing mechanism 3 work together to form an integrated waterproof fastening unit.

[0022] Please refer to Figure 5 and Figure 6The waterproof mechanism 2 has a multi-level sealing structure, including sealant 201, waterproof strip 202, and sealing ring 203. Sealant 201 is bonded and fixed to the top interface of nut 1, covering the edge of the top interface of nut 1. Sealant 201 prevents water from vertically penetrating from above nut 1. A waterproof strip 202 and sealing ring 203 are fixedly connected at the connection between nut 1 and sealant 201. Waterproof strip 202 is made of elastic rubber and is arranged in a staggered pattern on the outer wall of nut 1. The staggered arrangement of waterproof strip 202 extends the water penetration path to enhance the protective sealing between structures. Sealing ring 203 is fixedly connected below waterproof strip 202. A fixing groove 204 is provided below the port of nut 1. The fixing groove 204 is an annular groove structure surrounding the lower end of the nut 1. The sealing ring 203 is located above the fixing groove 204. The sealing ring 203 is used to deform under pressure during installation to cooperate with the fixing groove 204 to further isolate external water sources. The nut 1 also has a component for bottom sealing. A sealing gasket 205 and a waterproof tape 206 are connected above the internal thread 207. The waterproof tape 206 is located below the sealing gasket 205. The waterproof tape 206 has a hollow tubular structure and is inserted into the bottom of the nut 1. The waterproof tape 206 is a deformable soft material. The outer diameter of the waterproof tape 206 is adapted to the inner diameter of the bottom of the nut 1. After the nut 1 is fixed by force, the waterproof tape 206 is squeezed and deformed and can expand to fill the gap at the bottom of the nut 1, thereby achieving a seal at the bottom of the nut 1.

[0023] As a preferred embodiment, in order to improve the fixing strength between the nut 1 and the connector and prevent it from falling off, please refer to... Figure 4 and Figure 5 The fixing mechanism 3 includes a fixing ring 301, anti-loosening thread 302, external thread 303, washer 304, fixing strip 305, and connecting plate 306. The fixing ring 301 is fixedly connected inside the nut 1. The fixing ring 301 serves as the fixing base of the fixing mechanism 3. The top of the fixing ring 301 is connected to the external thread 303 by a threaded connection. The top surface of the external thread 303 is integrally formed with the connecting plate 306. The surface of the connecting plate 306 is provided with a slot or protrusion for accommodating a rotating tool. The connecting plate 306 is used to facilitate the user to use a tool to rotate the external thread 303 into the interior of the fixing ring 301.

[0024] As another preferred embodiment, in order to further enhance the engagement stability of the internal structure, the inner wall of the fixing ring 301 is inlaid with multiple anti-loosening grooves 302. The anti-loosening grooves 302 are multiple parallel groove structures. The anti-loosening grooves 302 are used to prevent the fixing ring 301 from falling off by increasing frictional resistance after the external thread 303 rotates into the fixing ring 301. At the same time, an internal gap is formed between the external thread 303 and the fixing ring 301. Multiple fixing strips 305 are interlaced and connected in the internal gap. The fixing strips 305 are evenly distributed around the external thread 303. The fixing strips 305 are used to fill the internal gap. When the fixing strips 305 are squeezed and misaligned, they can expand outward to increase the internal volume and prevent the structure from shaking.

[0025] As another preferred embodiment, in order to prevent water from seeping in from the top gap of the fixing mechanism 3 and to provide anti-rotation positioning during installation, the top of the external thread 303 is covered with a gasket 304. The gasket 304 is made of sealing rubber material. The gasket 304 is used to increase the contact area to improve the fixing strength while ensuring a sealed connection. In addition, the surface of the nut 1 is uniformly provided with vertical stripes 4 along the axial direction. The vertical stripes 4 are raised stripe structures. The vertical stripes 4 are used to embed into the hole wall after the nut 1 is inserted into the mounting hole to provide circumferential friction.

[0026] Working principle: During installation, the nut 1 is inserted into the pre-drilled hole of the connector. The vertical grooves 4 on the surface of the nut 1 embed into the hole wall to provide circumferential resistance. The vertical grooves 4 prevent the nut 1 from rotating during subsequent operations. Then, the connecting plate 306 is rotated by a tool to drive the external thread 303 into the fixing ring 301. During the screwing of the external thread 303, the fixing strip 305 located in the gap is squeezed by the external thread 303 and the fixing ring 301. The fixing strip 305 is misaligned and expands outward. The outwardly expanding fixing strip 305 fills the internal space and enhances the engagement strength with the connector. At the same time, the anti-loosening grooves 302 embedded in the inner wall of the fixing ring 301 provide reverse friction to prevent the external thread 303 from loosening. While the structure is fixed, The waterproof mechanism 2 forms a multi-layered sealing barrier. The sealant 201 at the top interface of the nut 1 is bonded and fixed to block the first source of water. The gasket 304 at the top of the external thread 303 covers the connection to assist in sealing. The waterproof strip 202 on the outer wall of the nut 1 extends the seepage path by using an alternating arrangement structure. The sealing ring 203 above the fixing groove 204 is deformed under pressure to fill the lateral gap between the nut 1 and the connecting hole. In addition, the waterproof strip 206 above the internal thread 207 expands and deforms under force. The hollow waterproof strip 206 tightly fills the dead corner gap at the bottom of the nut 1. Through the mechanical locking of the fixing mechanism 3 and the multi-level sealing synergy of the waterproof mechanism 2, the present invention effectively solves the problems of unstable connection and poor waterproof performance of existing rivet nuts.

Claims

1. A waterproof rivet nut, comprising a nut (1), a vertical stripe (4) on the surface of the nut (1), a waterproof mechanism (2) fixedly connected to the outer wall of the nut (1), a fixing mechanism (3) fixedly installed at the port of the nut (1), and an internal thread (207) on the inner wall of the lower port of the nut (1). Its features are, The waterproof mechanism (2) includes sealant (201), waterproof strip (202) and sealing ring (203). The sealant (201) is bonded and fixed at the interface of the nut (1). The waterproof strip (202) and sealing ring (203) are fixedly connected at the connection between the nut (1) and the sealant (201). The sealing ring (203) is located below the waterproof strip (202). The waterproof strip (202) is arranged in an alternating pattern on the outer wall of the nut (1). A sealing gasket (205) and a waterproof tape (206) are connected above the internal thread (207). The waterproof tape (206) is set below the sealing gasket (205). The waterproof tape (206) has a hollow tubular structure and is inserted into the bottom of the nut (1). The fixing mechanism (3) includes a fixing ring (301), an external thread (303), a washer (304), a fixing strip (305), and a connecting plate (306). The fixing ring (301) is fixedly installed inside the nut (1). The top of the fixing ring (301) is connected to the external thread (303) by a thread. A gap is formed between the external thread (303) and the fixing ring (301). The fixing strip (305) is inserted into the gap. The connecting plate (306) is integrally formed on the top surface of the external thread (303). The washer (304) covers the top of the external thread (303).

2. The waterproof rivet nut according to claim 1, characterized in that, A fixing groove (204) is provided below the port of the nut (1). The fixing groove (204) is an annular groove structure. The sealing ring (203) is located above the fixing groove (204). The sealing ring (203) is used to be deformed under pressure during installation to isolate external water sources.

3. A waterproof rivet nut according to claim 1, characterized in that, The inner wall of the retaining ring (301) is provided with anti-loosening grooves (302). The anti-loosening grooves (302) are multiple parallel groove structures. The anti-loosening grooves (302) are used to increase frictional resistance after the external thread (303) is screwed into the inside of the retaining ring (301) to prevent the retaining ring (301) from falling off.

4. A waterproof rivet nut according to claim 1, characterized in that, The waterproof strip (202) is made of elastic rubber material. The waterproof strip (202) is arranged in an alternating pattern to extend the water infiltration path. The sealant (201) is applied to the top edge of the nut (1) to prevent water from entering vertically from above.

5. A waterproof rivet nut according to claim 1, characterized in that, The waterproof tape (206) is a deformable soft material. The outer diameter of the waterproof tape (206) is adapted to the inner diameter of the bottom of the nut (1). The waterproof tape (206) is used to be squeezed and deformed after the nut (1) is fixed by force to fill the gap at the bottom of the nut (1).

6. A waterproof rivet nut according to claim 1, characterized in that, The fixing strips (305) are in multiple groups and are evenly distributed around the external thread (303). The fixing strips (305) are used to fill the gap between the external thread (303) and the fixing ring (301). When the fixing strips (305) are squeezed and misaligned, they expand outward to enhance the engagement strength of the fixing mechanism (3).

7. A waterproof rivet nut according to claim 1, characterized in that, The surface of the connecting plate (306) is provided with a slot or protrusion for accommodating a rotating tool. The connecting plate (306) is used to drive the external thread (303) to rotate relative to the fixed ring (301). The gasket (304) is made of sealing rubber.

8. A waterproof rivet nut according to claim 1, characterized in that, Vertical stripes (4) are evenly distributed along the axial direction of the nut (1) on the outer surface of the nut (1). The vertical stripes (4) are used to provide circumferential friction after the rivet nut is installed into the hole to prevent the nut (1) from rotating.

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