A countersunk rivet with a self-centering boss

Abstract

The utility model discloses a kind of countersunk rivets with self-centering boss, relating to countersunk rivet technical field, including installation cylinder, the outside of installation cylinder is fixedly connected with rivet cap, the one end of installation cylinder equidistantly fixedly connected with rivet body, the side of rivet body is fixedly connected with connecting cylinder, the inside of installation cylinder is slidably connected with rivet core main body, the one end of rivet core main body extends to the outside of connecting cylinder and is fixedly connected with rivet core head, the outside of rivet core main body is fixedly connected with extrusion ring, one end of extrusion ring is provided with bevel, the outside of rivet core main body is equipped with rivet core fracture groove, the inside of rivet body is respectively by base, reinforcing layer, high-temperature-resistant layer, outer protective layer and inner protective layer.The utility model discloses a kind of countersunk rivets with self-centering boss, by using the rivet body formed by base, reinforcing layer, high-temperature-resistant layer, outer protective layer and inner protective layer.This multilayer composite structure rivet body can improve the strength of rivet body, heat resistance and anticorrosive property, optimize connection performance, adapt to a variety of complex environment.

Description

Technical Field

[0001] This utility model relates to the field of countersunk rivet technology, and in particular to a countersunk rivet with a self-centering boss. Background Technology

[0002] Countersunk rivets are components used in riveting that connect riveted parts by means of their own deformation or interference fit. Countersunk rivets are widely used in automobiles, vehicles, electromechanical products, building decoration, and household appliances.

[0003] Traditional rivets have shortcomings in terms of strength, heat resistance, and corrosion resistance, which limits their application in high-performance, high-reliability connection applications. In high-strength, high-temperature, and corrosive environments, traditional rivets struggle to meet requirements, easily leading to connection failure and affecting structural safety and service life. To address these issues, we have introduced a countersunk rivet with a self-centering boss. Utility Model Content

[0004] This utility model discloses a countersunk rivet with a self-centering boss. It studies and improves the existing structure and its shortcomings, and provides a countersunk rivet with a self-centering boss to achieve better practical value.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A countersunk rivet with a self-centering boss includes a mounting sleeve, a rivet head fixedly connected to the outer side of the mounting sleeve, a rivet body fixedly connected to one end of the mounting sleeve at equal intervals, a connecting sleeve fixedly connected to one side of the rivet body, a rivet core body slidably connected inside the mounting sleeve, one end of the rivet core body extending to the outer side of the connecting sleeve and fixedly connected to a rivet core head, a compression ring fixedly connected to the outer side of the rivet core body, one end of the compression ring having a bevel, a rivet core fracture groove formed on the outer side of the rivet core body, and the interior of the rivet body consisting of a base, a reinforcing layer, a high-temperature resistant layer, an outer protective layer, and an inner protective layer.

[0007] In a preferred embodiment, the reinforcing layer is disposed on the outside of the substrate, the high-temperature resistant layer is disposed on the outside of the reinforcing layer, the outer protective layer is disposed on the outside of the high-temperature resistant layer, and the inner protective layer is disposed on the inside of the substrate.

[0008] In a preferred embodiment, the matrix is ​​made of epoxy resin, the reinforcing layer is made of glass fiber, and the high-temperature resistant layer is made of carbon fiber reinforced polyetheretherketone composite material.

[0009] In a preferred embodiment, both the outer and inner protective layers are made of polytetrafluoroethylene (PTFE).

[0010] In a preferred embodiment, one end of the rivet cap is fixedly connected with protrusions at equal intervals.

[0011] The countersunk rivet with a self-centering boss provided by this utility model has the following advantages:

[0012] Firstly, by employing a riveting body composed of a base layer, a reinforcing layer, a high-temperature resistant layer, an outer protective layer, and an inner protective layer, the strength, heat resistance, and corrosion resistance of the riveting body can be significantly improved, optimizing connection performance and adapting to various complex environments. This multi-layered composite riveting body performs excellently in high-strength, high-temperature, and corrosive environments, effectively preventing connection failure and improving structural safety and service life.

[0013] Secondly, during installation, the rivet arches under pressure to form a flower-like shape, which allows it to better fit the workpiece surface, providing a larger contact area and stronger connection force, further enhancing the stability of the connection. Attached Figure Description

[0014] Figure 1 This is a three-dimensional schematic diagram of a countersunk rivet with a self-centering boss proposed in this utility model.

[0015] Figure 2 This is a cross-sectional schematic diagram of a countersunk rivet with a self-centering boss proposed in this utility model.

[0016] Figure 3 This is an exploded view of a countersunk rivet with a self-centering boss proposed in this utility model.

[0017] Figure 4 This is a schematic diagram of the internal structure of a countersunk rivet with a self-centering boss proposed in this utility model.

[0018] In the attached diagram: 1. Mounting cylinder; 2. Rivet cap; 3. Rivet body; 4. Connecting cylinder; 5. Nail core body; 6. Extrusion ring; 7. Nail core head; 8. Nail core fracture groove; 9. Protrusion; 10. Base; 11. Reinforcing layer; 12. High temperature resistant layer; 13. Outer protective layer; 14. Inner protective layer. Detailed Implementation

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

[0020] It should be noted that, in the context of use, the terms up, down, left, right, front, back, top, bottom, forward, reverse, clockwise, and counterclockwise in the following description are used merely for convenience and do not imply any specific fixed direction. In fact, they are used to reflect the relative positions and / or orientations between the various parts of the object and therefore should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0021] It should be noted that, in practice, unless otherwise explicitly specified and limited, the terms "installation," "fixing," and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; a structural connection or a mechanical connection; a direct connection or an indirect connection via an intermediate medium; or a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0022] It should be noted that these and subsequent accompanying drawings are merely illustrative and are not drawn to scale, and should not be construed as limiting the scope of protection of this utility model. Furthermore, variations in different embodiments can be appropriately combined. The components of the embodiments described and marked in the accompanying drawings can typically be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of this application provided in the drawings is not intended to limit the scope of the claimed application, but merely represents selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0023] The countersunk rivet with a self-centering boss disclosed in this utility model is mainly used in the application of countersunk rivets.

[0024] Reference Figures 1 to 4 A countersunk rivet with a self-centering boss includes: a mounting cylinder 1, a rivet head 2 fixedly connected to the outer side of the mounting cylinder 1, a rivet body 3 fixedly connected at equal intervals to one end of the mounting cylinder 1, a connecting cylinder 4 fixedly connected to one side of the rivet body 3, a rivet core body 5 slidably connected inside the mounting cylinder 1, one end of the rivet core body 5 extending to the outer side of the connecting cylinder 4 and fixedly connected to a rivet core head 7, a compression ring 6 fixedly connected to the outer side of the rivet core body 5, a bevel provided at one end of the compression ring 6, a rivet core fracture groove 8 opened on the outer side of the rivet core body 5, and the interior of the rivet body 3 is composed of a base 10, a reinforcing layer 11, a high-temperature resistant layer 12, an outer protective layer 13 and an inner protective layer 14 respectively;

[0025] The reinforcing layer 11 is disposed on the outside of the substrate 10, the high temperature resistant layer 12 is disposed on the outside of the reinforcing layer 11, the outer protective layer 13 is disposed on the outside of the high temperature resistant layer 12, and the inner protective layer 14 is disposed inside the substrate 10.

[0026] The substrate 10 is made of epoxy resin, the reinforcing layer 11 is made of glass fiber, and the high-temperature resistant layer 12 is made of carbon fiber reinforced polyether ether ketone composite material.

[0027] Both the outer protective layer 13 and the inner protective layer 14 are made of polytetrafluoroethylene.

[0028] In the above technical solution, considering the shortcomings of traditional rivets in terms of strength, heat resistance, and corrosion resistance, their application in high-performance and high-reliability connection requirements is limited. In high-strength, high-temperature, and corrosive environments, traditional rivets are difficult to meet requirements, easily leading to connection failure and affecting structural safety and service life. To solve these problems, the specific operation is as follows: During the riveting operation, first, the rivet core body 5 is inserted into the rivet body 3. Then, the rivet head 7, along with the rivet body 3, is placed into the rivet hole of the workpiece, ensuring that one side of the rivet head 2 is tightly fitted against one side surface of the workpiece. Next, the riveting equipment is started, and the machine's pulling force is used to pull the rivet core body 5. Under the action of the pulling force, the extrusion ring 6 is gradually squeezed into the connecting cylinder 4 along the inclined plane. As the rivet head 7 further extrudes, the connecting cylinder 4 is subjected to pressure and transmitted to the rivet body 3, causing the rivet body 3 to arch under pressure and form a flower-like structure, thus firmly abutting against the other side surface of the workpiece. Finally, the main body 5 of the rivet breaks at the rivet core fracture groove 8, completing the riveting process. The rivet body 3 is then firmly installed in the workpiece, achieving a reliable connection of the workpiece. The rivet body 3 is composed of a base 10, a reinforcing layer 11, a high-temperature resistant layer 12, an outer protective layer 13, and an inner protective layer 14. The matrix 10 is made of epoxy resin, which has good mechanical properties and provides basic strength and toughness for the rivet body 3. The reinforcing layer 11 is made of glass fiber, which has high strength and high modulus, and can significantly improve the overall strength and stiffness of the rivet body 3, especially when subjected to tensile and shear loads. The high temperature resistant layer 12 is made of carbon fiber reinforced polyether ether ketone (PEEK) composite material, which has excellent high temperature resistance and can maintain stable mechanical properties in high temperature environments. The outer protective layer 13 and the inner protective layer 14 are both made of polytetrafluoroethylene. The double protection of the inner and outer protective layers makes the rivet body 3 have extremely high corrosion resistance in humid, acidic and alkaline environments, effectively extending the service life of the rivet body 3 and reducing the risk of connection failure due to corrosion. The rivet body 3, which adopts a multi-layer composite structure, integrates the advantages of a variety of high-performance materials and can adapt to a variety of complex environments such as high strength, high temperature and corrosion, meeting the high performance requirements of modern industry for connectors.

[0029] Reference Figures 1 to 4 In a preferred embodiment, one end of the rivet 2 is fixedly connected with protrusions 9 at equal intervals; these contact points can better resist sliding when subjected to force, thereby enhancing the anti-slip performance of the rivet 3 at the connection point.

[0030] Working Principle: During riveting, the rivet core body 5 is first inserted into the rivet body 3. Then, the rivet head 7, along with the rivet body 3, is placed into the rivet hole of the workpiece, ensuring that one side of the rivet head 2 is tightly fitted against one side of the workpiece surface. Next, the riveting equipment is started, and the machine's pulling force pulls the rivet core body 5. Under this pulling force, the extrusion ring 6 is gradually squeezed into the connecting cylinder 4 along the inclined plane. As the rivet head 7 further extrudes, the connecting cylinder 4 is subjected to pressure, which is transmitted to the rivet body 3, causing the rivet body 3 to arch under pressure and form a flower-like structure, thus firmly abutting against the other side of the workpiece surface. Finally, the rivet core body 5 breaks at the rivet core fracture groove 8, completing the riveting process. The rivet body 3 is then firmly installed in the workpiece, achieving a reliable connection. Any content not described in detail in this specification is prior art known to those skilled in the art.

[0031] The above description is merely a preferred embodiment of this utility model, but the protection scope of this utility model is not limited thereto. The substitutions may be replacements of some structures, devices, or method steps, or they may be complete technical solutions. Equivalent substitutions or modifications made based on the technical solution and inventive concept of this utility model should all be covered within the protection scope of this utility model.

Claims

1. A countersunk rivet with a self-centering boss, comprising a mounting sleeve (1), characterized in that, A rivet cap (2) is fixedly connected to the outside of the mounting cylinder (1). A rivet body (3) is fixedly connected to one end of the mounting cylinder (1) at equal intervals. A connecting cylinder (4) is fixedly connected to one side of the rivet body (3). A nail core body (5) is slidably connected inside the mounting cylinder (1). One end of the nail core body (5) extends to the outside of the connecting cylinder (4) and is fixedly connected to a nail core head (7). A compression ring (6) is fixedly connected to the outside of the nail core body (5). One end of the compression ring (6) is provided with a bevel. A nail core fracture groove (8) is opened on the outside of the nail core body (5). The inside of the rivet body (3) consists of a base (10), a reinforcing layer (11), a high-temperature resistant layer (12), an outer protective layer (13), and an inner protective layer (14).

2. A countersunk rivet with a self-centering boss according to claim 1, characterized in that, The reinforcing layer (11) is disposed on the outside of the substrate (10), the high temperature resistant layer (12) is disposed on the outside of the reinforcing layer (11), the outer protective layer (13) is disposed on the outside of the high temperature resistant layer (12), and the inner protective layer (14) is disposed inside the substrate (10).

3. A countersunk rivet with a self-centering boss according to claim 1, characterized in that, The substrate (10) is made of epoxy resin, the reinforcing layer (11) is made of glass fiber, and the high-temperature resistant layer (12) is made of carbon fiber reinforced polyether ether ketone composite material.

4. A countersunk rivet with a self-centering boss according to claim 1, characterized in that, Both the outer protective layer (13) and the inner protective layer (14) are made of polytetrafluoroethylene.

5. A countersunk rivet with a self-centering boss according to claim 1, characterized in that, One end of the rivet (2) is fixedly connected with protrusions (9) at equal intervals.

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