Glue-free waterproof self-plugging rivet

Abstract

The utility model relates to the technical field of self-plugging rivets, in particular to a glue-free waterproof self-plugging rivet which comprises a rivet core and a rivet body, the rivet body is sleeved on the rivet core, the rivet core is composed of a rivet rod and a rivet head, the rivet head is fixedly arranged at the end of the rivet rod, and an anti-falling clamping groove is arranged on the rivet rod. The rivet body is composed of a rivet sleeve and a sealing cap, the sealing cap is located at one end of the rivet sleeve, the sealing cap and the rivet sleeve are integrally formed, a through hole where the rivet core penetrates is formed in the middle of the rivet sleeve, and an anti-disengaging protrusion is arranged at the end, away from the sealing cap, of the inner wall of the through hole. The double-concave-platform structure (the sealing groove and the anti-falling clamping groove) effectively enhances the sealing effect, and long-term reliable waterproof performance can be achieved without extra glue. The outer wall of the rivet sleeve is designed to be convex, so that the locking force is further improved, and the connecting piece is kept stable in a vibration or impact environment.

Description

Technical Field

[0001] This utility model relates to the field of blind rivet technology, specifically to a glue-free waterproof blind rivet. Background Technology

[0002] A blind rivet is a single-sided fastener consisting of a rivet core and a rivet sleeve. Its working principle involves pulling out the rivet core using a riveting tool, causing the rivet sleeve to undergo plastic deformation under the pull of the core. Eventually, the core breaks off, and the rivet sleeve expands and tightly fits against the connected parts, forming a strong connection. Blind rivets are characterized by their ease of operation and quick installation, making them particularly suitable for space-constrained or single-sided applications. Their design typically includes features such as anti-loosening grooves and sealing grooves to enhance the strength, sealing, and fatigue resistance of the connection. Blind rivets are widely used in aerospace, automotive manufacturing, and architectural decoration, meeting the connection needs of various materials and providing an efficient and reliable fastening solution.

[0003] Blind rivets, with their efficient and reliable connection performance and wide application adaptability, have become an indispensable fastening solution in modern industry. However, they still have certain problems: 1) poor airtightness and waterproof sealing performance, requiring the use of sealant or rubber rings, which are prone to aging; 2) poor anti-loosening performance; 3) insufficient locking force. Therefore, in view of the above situation, there is an urgent need to develop glue-free waterproof blind rivets to overcome the shortcomings in current practical applications and meet current needs. Utility Model Content

[0004] The purpose of this invention is to provide a glue-free, waterproof pop rivet to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a glue-free waterproof pull rivet, comprising a rivet core and a rivet body, the rivet body being sleeved on the rivet core, the rivet core consisting of a rivet shank and a rivet head, the rivet head being fixed at the end of the rivet shank, the rivet shank having an anti-loosening groove; the rivet body consisting of a rivet sleeve and a sealing cap, the sealing cap being located at one end of the rivet sleeve and integrally formed with the rivet sleeve, the rivet sleeve having a through hole in the middle for inserting the rivet core, the inner wall of the through hole having an anti-loosening protrusion at the end away from the sealing cap, the side of the sealing cap adjacent to the rivet sleeve being the mounting surface, the other side of the sealing cap being the outer wall surface, the mounting surface having a sealing groove.

[0006] Preferably, a pull-out groove is formed on the outer wall of one end of the nail rod. A riveting section is formed between one side of the pull-out groove and the nail head, and a tie rod section is formed on the other side of the pull-out groove. The outer wall of the tie rod section is provided with external threads. Specifically, through the coordinated action of the pull-out groove and the tie rod section with external threads, during the riveting process, when an external tool tightens the external threads of the tie rod section, an axial tensile force is applied, causing the rivet sleeve to undergo plastic deformation until the pull-out groove reaches the preset stress concentration point and breaks, thereby accurately separating the tie rod section and the riveting section and completing the fastening.

[0007] Preferably, the end of the rivet head is chamfered. Specifically, the chamfer reduces the friction between the rivet head and the mounting hole, making it easier to insert the rivet into the hole. This significantly improves assembly efficiency, especially in manual or automated assembly processes.

[0008] Preferably, a deformation zone is formed between the anti-loosening protrusion and the sealing cap. The outer wall of the deformation zone protrudes outward in an arc shape. Specifically, by forming a deformation zone between the anti-loosening protrusion and the sealing cap, and designing the outer wall of the deformation zone to be an outward arc-shaped protrusion, this design can effectively improve the sealing performance. The arc-shaped protrusion of the outer wall can better fit the surface of the connected parts, preventing liquid or gas leakage. At the same time, the arc structure can disperse stress and reduce stress concentration, thereby enhancing the fatigue resistance of the rivet and extending its service life. In addition, the design of the deformation zone helps the rivet deform more evenly during the riveting process, ensuring a tight fit between the rivet and the connected parts and improving assembly accuracy.

[0009] Preferably, the anti-loosening protrusion and the anti-loosening groove are matched. Specifically, by setting an anti-loosening groove at the end of the rivet core and setting a matching anti-loosening protrusion on the inner wall of the rivet sleeve, this design can effectively prevent relative displacement or detachment of the rivet core and the rivet sleeve after riveting, thereby significantly improving the connection reliability and stability of the rivet. The cooperation between the anti-loosening protrusion and the anti-loosening groove not only enhances the rivet's pull-out resistance, but also maintains the firmness of the connection under vibration or impact environment, ensuring the stability of the rivet in long-term use. In addition, this design simplifies the rivet installation process, avoids installation failure caused by misalignment of the rivet core and the rivet sleeve, and improves assembly efficiency and quality.

[0010] Preferably, the sealing groove is an annular structure and is located on the mounting surface near the outer wall of the rivet sleeve. Specifically, by setting an annular sealing groove on the mounting surface of the rivet sleeve near the outer wall, this design can effectively improve the sealing performance of the rivet. The sealing groove can accommodate the deformed part of the rivet sleeve during riveting, forming a tight sealing structure to prevent liquid or gas from leaking from the gap between the rivet and the connected parts. The annular structure ensures uniform force distribution, further improving the reliability and stability of the seal.

[0011] Compared with the prior art, this utility model provides a glue-free waterproof pop rivet, which has the following beneficial effects:

[0012] Adhesive-free waterproof blind rivets achieve superior waterproof performance and connection stability through innovative structural design. Their double-concave structure (sealing groove and anti-loosening groove) effectively enhances the sealing effect, achieving long-term reliable waterproof performance without the need for additional glue. The raised design on the outer wall of the rivet sleeve further improves the locking force, ensuring the connection remains stable under vibration or impact. The optimized design of the rivet head chamfer and deformation zone simplifies the installation process while improving riveting efficiency and quality. This design not only enhances the product's practicality and durability but also reduces maintenance costs, making it suitable for connection needs in various complex environments.

[0013] This design effectively solves the technical challenges of waterproofing and connection stability in existing blind rivets. Traditional blind rivets often rely on glue for sealing, which leads to glue aging and seal failure. This design, however, achieves glue-free waterproofing through structural optimization, completely eliminating this hidden danger. Furthermore, existing rivets are prone to loosening or detachment under vibration. This design, through the cooperation of the anti-detachment groove and the rivet sleeve protrusion, significantly enhances the anti-detachment performance, ensuring long-term connection reliability. In addition, traditional rivets may experience uneven sealing or insufficient locking force during installation. This design, through the synergistic effect of the double concave platform structure and the outer wall protrusion, effectively solves these problems and improves the overall connection performance. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

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

[0016] Figure 2 This is a partial cross-sectional view of the nail core and rivet body of this utility model;

[0017] Figure 3 This is a side longitudinal sectional view of the nail core and rivet body of this utility model;

[0018] Figure 4 This is one of the schematic diagrams of the nail core structure of this utility model;

[0019] Figure 5 This is the second schematic diagram of the nail core structure of this utility model;

[0020] Figure 6 This is a side view of the nail core of this utility model;

[0021] Figure 7 This is a partial cross-sectional view of the rivet body of this utility model.

[0022] In the diagram: 10, nail core; 110, nail rod; 111, riveting section; 112, tie rod section; 113, anti-loosening groove; 114, breakage groove; 115, external thread; 120, nail head; 121, chamfer; 20, rivet body; 210, rivet sleeve; 211, anti-loosening protrusion; 212, deformation zone; 220, sealing cap; 221, mounting surface; 222, sealing groove; 223, outer wall surface. Detailed Implementation

[0023] 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.

[0024] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0025] Example:

[0026] Please see Figures 1-7 This utility model provides a technical solution: a glue-free waterproof pull rivet, including a rivet core 10 and a rivet body 20. The rivet body 20 is sleeved on the rivet core 10. The rivet core 10 is composed of a rivet shank 110 and a rivet head 120. The rivet head 120 is fixed at the end of the rivet shank 110. The rivet shank 110 has an anti-loosening groove 113. The rivet body 20 is composed of a rivet sleeve 210 and a sealing cap 220. The sealing cap 220 is located at one end of the rivet sleeve 210 and is integrally formed with the rivet sleeve 210. The rivet sleeve 210 has a through hole in the middle for the rivet core 10 to pass through. The inner wall of the through hole away from the sealing cap 220 has an anti-loosening protrusion 211. The side of the sealing cap 220 adjacent to the rivet sleeve 210 is a mounting surface 221, and the other side of the sealing cap 220 is an outer wall surface 223. The mounting surface 221 has a sealing groove 222.

[0027] Preferably, a pull-out groove 114 is provided on the outer wall of one end of the nail rod 110. A riveting section 111 is formed between one side of the pull-out groove 114 and the nail head 120, and a pull rod section 112 is formed on the other side of the pull-out groove 114. An external thread 115 is provided on the outer wall of the pull rod section 112. Specifically, through the coordinated action of the pull-out groove 114 and the pull rod section 112 with external thread 115, during the riveting process, when an external tool such as a rivet gun tightens the external thread 115 of the pull rod section 112, an axial tensile force is applied to cause the rivet sleeve 210 to undergo plastic deformation until the preset stress concentration point is reached at the pull-out groove 114 and it breaks, thereby accurately separating the pull rod section 112 and the riveting section 111 and completing the fastening.

[0028] Preferably, the end of the rivet head 120 is provided with a chamfer 121. Specifically, the chamfer 121 can reduce the friction between the rivet head 120 and the mounting hole, making it easier for the rivet to be inserted into the hole. Especially in manual or automated assembly processes, it can significantly improve assembly efficiency.

[0029] Preferably, a deformation zone 212 is formed between the anti-loosening protrusion 211 and the sealing cap 220. The outer wall of the deformation zone 212 protrudes outward in an arc shape. Specifically, by forming a deformation zone 212 between the anti-loosening protrusion 211 and the sealing cap 220, and designing the outer wall of the deformation zone 212 to be an arc-shaped protrusion outward, this design can effectively improve the sealing performance. The arc-shaped protrusion of the outer wall can better fit the surface of the connected parts, preventing liquid or gas leakage. At the same time, the arc structure can disperse stress and reduce stress concentration, thereby enhancing the fatigue resistance of the rivet and extending its service life. In addition, the design of the deformation zone 212 helps the rivet deform more evenly during the riveting process, ensuring a tight fit between the rivet and the connected parts and improving assembly accuracy.

[0030] Preferably, the anti-loosening protrusion 211 is adapted to the anti-loosening groove 113. Specifically, by setting the anti-loosening groove 113 at the end of the rivet core 10 and setting the anti-loosening protrusion 211 adapted to it on the inner wall of the rivet sleeve 210, this design can effectively prevent the relative displacement or detachment of the rivet core 10 and the rivet sleeve 210 after riveting, thereby significantly improving the connection reliability and stability of the rivet. The cooperation between the anti-loosening protrusion 211 and the anti-loosening groove 113 not only enhances the rivet's pull-out resistance, but also maintains the firmness of the connection under vibration or impact environment, ensuring the stability of the rivet in long-term use. In addition, this design simplifies the rivet installation process, avoids installation failure caused by misalignment of the rivet core 10 and the rivet sleeve 210, and improves assembly efficiency and quality. The anti-loosening protrusion 211 and the anti-loosening groove 113 can fit tightly after riveting to achieve a sealing and waterproof effect.

[0031] Preferably, the sealing groove 222 is an annular structure, and the sealing groove 222 is located on the mounting surface 221 near the outer wall of the rivet sleeve 210. Specifically, by setting an annular sealing groove 220 on the mounting surface 221 of the rivet sleeve 210 near the outer wall, this design can effectively improve the sealing performance of the rivet. The sealing groove 220 can accommodate the deformed part of the rivet sleeve 210 during riveting, forming a tight sealing structure to prevent liquid or gas from leaking from the gap between the rivet and the connected parts. The annular structure ensures uniform force distribution, further improving the reliability and stability of the seal.

[0032] Working principle: The rivet sleeve 210 of the rivet is inserted into the mounting hole of the connected part, ensuring that the mounting surface 221 of the rivet sleeve 210 is tightly fitted with the connected part. Then, the chuck of the riveting tool is placed on the pull rod section 112 of the rivet core 10. By pulling the pull rod, the rivet sleeve 210 undergoes plastic deformation under the guidance of the rivet core 10. The anti-loosening protrusion 211 on the outer wall of the rivet sleeve 210 cooperates with the anti-loosening groove 113 of the rivet core 10 to prevent the rivet 10 from coming out. As the rivet core 10 continues to be pulled out, the rivet sleeve 210 expands in the deformation zone 212 and tightly fits the wall of the mounting hole. The sealing groove 222 and the mounting surface 221 form a double waterproof seal. Finally, when the rivet core 10 is pulled to the breakage groove 114, the rivet core 10 breaks, and the riveting is completed. The entire process does not require additional glue, and waterproof and firm connection are achieved through structural design.

[0033] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

Claims

1. A glueless waterproof self-plugging rivet, characterized by: The application relates to a rivet core (10) and a rivet body (20) sleeved on the rivet core (10), wherein the rivet core (10) is composed of a rivet rod (110) and a rivet head (120), the rivet head (120) is fixed on the end of the rivet rod (110), and the rivet rod (110) is provided with an anti-disengagement groove (113); the rivet body (20) is composed of a rivet sleeve (210) and a sealing cap (220), the sealing cap (220) is located at one end of the rivet sleeve (210) and is integrally formed with the rivet sleeve (210), a through hole for penetrating the rivet core (10) is formed in the middle of the rivet sleeve (210), an anti-disengagement protrusion (211) is arranged on the inner wall of the through hole away from the sealing cap (220), one side of the sealing cap (220) adjacent to the rivet sleeve (210) is a mounting surface (221), the other side of the sealing cap (220) is an outer wall surface (223), and a sealing groove (222) is formed in the mounting surface (221).

2. The glueless waterproof self-plugging rivet of claim 1, wherein: An outer wall of one end of the rivet rod (110) is provided with a breakage groove (114), an riveting section (111) is formed between one side of the breakage groove (114) and the rivet head (120), and a pull rod section (112) is formed on the other side of the breakage groove (114), and the outer wall of the pull rod section (112) is provided with an external thread (115).

3. The glueless waterproof self-plugging rivet of claim 1, wherein: The end of the rivet head (120) is provided with a chamfer (121).

4. The glueless waterproof self-plunging rivet according to claim 1, wherein: The anti-disengagement protrusion (211) and the sealing cap (220) form a deformation area (212), and the outer wall of the deformation area (212) is outwardly arc-shaped.

5. The glueless waterproof self-plunging rivet of claim 1, wherein: The anti-disengagement protrusion (211) is matched with the anti-disengagement groove (113).

6. The glueless waterproof self-plunging rivet of claim 1, wherein: The sealing groove (222) is a ring structure, and the sealing groove (222) is located at the position of the mounting surface (221) adjacent to the outer wall of the rivet sleeve (210).

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