Arc-shaped flange self-plugging rivet

Abstract

The utility model relates to the technical field of rivets, in particular to an arc-shaped flange self-plugging rivet which comprises a rivet core and a rivet body, the rivet body is arranged at one end of the rivet core in a sleeved mode and comprises a rivet sleeve and a flange, the rivet sleeve and the flange are integrally formed, the outer wall face of the rivet sleeve is an installation area, one side, close to the installation area, of the flange is a concave face, and the other side of the flange is a convex face. The rivet core comprises a rivet rod and a rivet head, the rivet head is located at the end of the rivet rod, the rivet head and the rivet rod are integrally formed, external threads are arranged on the outer wall of the end, away from the rivet head, of the rivet rod, the rivet body is formed by compounding a rivet sleeve and an arc-shaped flange, and the flange adjacent to the mounting face of the rivet sleeve is in a concave face state. When the flange is locked, the sealant in the concave face can be kept in a complete state, deformation and tearing caused by pressing are avoided, the sealing performance is improved, the exposed face of the flange is the convex face after installation, the structural strength of the flange can be improved, and the external thread on the rivet rod can adjust the locking force during riveting.

Description

TECHNICAL FIELD

[0001] The utility model relates to rivet technical field, concretely is arc flange core-pulling rivet. BACKGROUND

[0002] Core-pulling rivet (rivet nut) is a kind of single-sided installation mechanical fastener, which is composed of hollow nail body and built-in nail core, and when installation, the nail core is pulled by rivet gun in one direction, the workpiece is locked by the tail expansion deformation, the nail core is finally disconnected from the preset breaking point, permanent riveting is formed, it does not need back operation, is suitable for closed or narrow space, has the advantages such as high efficiency, anti-loosening and strong sealing, is widely used in aerospace, automobile manufacturing, electronic equipment and building field, and is especially suitable for thin plate or dissimilar material connection.

[0003] Core-pulling rivet can simplify assembly process and improve structural reliability, but it still has some problems: 1) glue sealing at riveting position, the sealing glue is easily extruded and deformed or even torn during riveting, thereby causing the sealing performance and waterproof performance of the sealing glue to decrease; 2) low locking force and structural strength; therefore, in view of the above status, it is urgent to develop arc flange core-pulling rivet to overcome the deficiencies in current actual application and meet the current needs. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing arc flange core-pulling rivet to solve the problems raised in the above background technology.

[0005] To achieve the above object, the utility model provides the following technical scheme: arc flange core-pulling rivet, including nail core and rivet body, the rivet body is sleeved at one end of the nail core, the rivet body includes rivet sleeve and flange, the rivet sleeve and the flange are integrally formed, the outer wall surface of the rivet sleeve is installation area, the side adjacent to the installation area of the flange is concave, the other side of the flange is convex, the inside of the concave is used to fill sealing glue, specifically, when connecting by using the arc flange core-pulling rivet, the excess sealing glue can be cut off through the concave edge of the flange, while keeping the integrity of the internal sealing glue, avoiding the influence of sealing effect caused by tearing of the sealing glue, and the deformation and cracking of the sealing glue caused by stress extrusion can also be avoided.

[0006] Preferably, the nail core includes a nail rod and a nail head, the nail head is located at the end of the nail rod and is integrally formed with the nail rod.

[0007] Preferably, an external thread is formed on the outer wall of the end of the nail rod away from the nail head, and a chamfer is formed on the end, specifically, the external thread can facilitate core-pulling operation by cooperating with the rivet machine, and in precise assembly, the external thread can be used to adjust the pre-tightening force, the pulling depth is adjusted by rotating the nail core, the clamping force of the rivet is controlled, and the workpiece is ensured to be tightly fitted.

[0008] Preferably, a groove is formed between the shank and the head, and the inner wall of the sleeve is fixedly provided with a protrusion which is matched with the groove.

[0009] Preferably, the sealing glue is a structural glue, and specifically, the sealing glue and the arc-shaped flange are matched to achieve the sealing and waterproof effect.

[0010] Compared with the prior art, the arc-shaped flange core-pulling rivet has the following beneficial effects:

[0011] The rivet body is composed of the sleeve and the arc-shaped flange, the flange adjacent to the installation surface of the sleeve is in a concave state, glue is injected into the concave surface during installation, the sealing glue in the concave surface can be kept in an intact state during locking, and deformation and tearing caused by pressure are avoided, so that the sealing performance is improved, the exposed surface of the flange is in a convex state after installation, the structural strength is improved, and the external thread on the shank can adjust the locking force during riveting. BRIEF DESCRIPTION OF DRAWINGS

[0012] In order to more clearly illustrate the technical scheme in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor on the basis of these drawings:

[0013] Figure 1 It is a front structure schematic view of the present application;

[0014] Figure 2 It is a side structure schematic view of the present application;

[0015] Figure 3 It is a whole side view longitudinal section view of the present application;

[0016] Figure 4 It is a whole section view of the present application;

[0017] Figure 5 It is an A part enlarged schematic view of the present application Figure 4

[0018] In the figure: 10, rivet core; 110, shank; 120, head; 121, groove; 130, external thread; 20, rivet body; 210, sleeve; 211, protrusion; 220, flange; 221, concave surface; 222, convex surface. DETAILED DESCRIPTION

[0019] ​Clearly and completely describe the technical scheme in the embodiments of the utility model with reference to the drawings in the embodiments of the utility model, obviously, the described embodiments are only some embodiments of the utility model, not all embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the ordinary skilled in the art without creative labor belong to the scope of the utility model protection.

[0020] In the utility model, unless another explicit provision and limitation, the terms "mount", "connect", "connect", "fix" and other terms should be broad understanding, for example, can be fixed connection, can also be detachable connection, or integrated, can be mechanical connection, can also be electrical connection, can be directly connected, can also be indirectly connected through the intermediate medium, can be the communication inside two elements or the interaction relationship of two elements. For the ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0021] Embodiment:

[0022] Please refer to Figures 1-5 The utility model provides a technical scheme: arc flange core-pulling rivet, including nail core 10 and rivet body 20, rivet body 20 is set in one end of nail core 10, rivet body 20 includes rivet sleeve 210 and flange 220, rivet sleeve 210 and flange 220 are integrally formed, the outer wall surface of rivet sleeve 210 is installation area, the side of flange 220 adjacent to installation area is concave surface 221, the other side of flange 220 is convex surface 222, the inside of concave surface 221 is used to fill sealant, specifically, when connecting using the arc flange core-pulling rivet, the edge of concave surface 221 of flange 220 can cut off the excess sealant, while maintaining the integrity of the internal sealant, avoiding the influence of sealant tearing on sealing effect, and avoiding the deformation and cracking of sealant under stress.

[0023] Preferably, nail core 10 includes nail rod 110 and nail head 120, nail head 120 is located at the end of nail rod 110 and is integrally formed with nail rod 110.

[0024] Preferably, the outer wall of the end of nail rod 110 away from nail head 120 is provided with external thread 130, and the end is provided with chamfer, specifically, the external thread 130 can be conveniently matched with the core-pulling operation of rivet machine, and in precise assembly, the external thread can be used for adjusting pre-tightening force, the pulling depth is adjusted by rotating the nail core, the clamping force of the rivet is controlled, and the workpiece is ensured to be closely attached.

[0025] Preferably, a groove 121 is formed between nail rod 110 and nail head 120, a protrusion 211 is fixedly arranged on the inner wall of rivet sleeve 210, and the protrusion 211 is matched with the groove 121.

[0026] Preferably, the sealing glue adopts a structural glue, specifically, the sealing and waterproof effect is realized by the sealing glue cooperating with the arc-shaped flange 220.

[0027] Working principle: insert the rivet sleeve 210 of the self-plugging rivet into the preformed hole of the workpiece, the end of the rivet core 10 is exposed, then inject the sealing glue between the concave surface 221 of the flange 220 and the workpiece, then use the rivet gun to clamp the end of the shank 110 of the rivet core 10, apply tension, the rivet head 120 of the rivet core 10 is pulled inside the rivet sleeve 210, forcing the rivet sleeve 210 to expand radially at the tail, forming a drum-shaped head, pressing the back of the workpiece, when the tension reaches the preset value, the shank 110 is accurately broken at the adjacent flange 220, the remaining head of the rivet core 10 is permanently clamped in the rivet body 20, ensuring firm riveting, the expanded rivet body 20 is tightly attached to the workpiece, forming a permanent single-sided locking, with anti-vibration, anti-loosening and sealing, it should be noted that the flange 220 will cut off the excess sealing glue through the edge of the concave surface 221 when locking, while keeping the internal sealing glue structure intact, the worker can adjust the locking force applied during locking through the external thread 130.

[0028] It should be noted that in this document, the 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. Moreover, the terms "include", "contain" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or equipment. Without more limitations, the element defined by the statement "including a" does not exclude the presence of other identical elements in the process, method, article or equipment including the element.

Claims

1. Arc flange blind rivet, characterized in that: The application relates to a rivet core (10) and a rivet body (20), the rivet body (20) being sleeved at one end of the rivet core (10), the rivet body (20) comprising a rivet sleeve (210) and a flange (220), the rivet sleeve (210) being integrally formed with the flange (220), the outer wall surface of the rivet sleeve (210) being a mounting area, one side of the flange (220) adjacent to the mounting area being a concave surface (221), the other side of the flange (220) being a convex surface (222), and the inside of the concave surface (221) being used for filling sealant.

2. The arc-shaped flanged drawn-in pop rivet according to claim 1, characterized in that: The rivet core (10) comprises a rivet rod (110) and a rivet head (120), the rivet head (120) being located at the end of the rivet rod (110) and being integrally formed with the rivet rod (110).

3. The arc-shaped flanged drawn-in pop rivet according to claim 2, characterized in that: An outer thread (130) is arranged on the outer wall of the end of the rivet rod (110) away from the rivet head (120), and a chamfer is arranged on the end.

4. The arc-shaped flanged drawn-in pop rivet according to claim 2, characterized in that: A groove (121) is formed between the rivet rod (110) and the rivet head (120), a protrusion (211) is fixedly arranged on the inner wall of the rivet sleeve (210), and the protrusion (211) is matched with the groove (121).

5. The arc-shaped flanged drawn-in pop rivet according to claim 1, characterized in that: The sealant is structural glue.

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