Self-puncturing connecting rivet of composite structure

Abstract

The utility model discloses a self-piercing connecting rivet with a composite structure, which is characterized in that a self-piercing connecting riveting part used for being riveted with a plate in a self-locking manner is integrally formed on one side of a flange plate, and a connecting part used for being connected with a part in a matching manner is connected on the other side of the flange plate, so that the rivet can be connected with the part while being riveted and fixed with the plate; a plurality of connecting pieces do not need to be arranged on the plate, damage to the plate structure and the installation cost are reduced, the functionality of the rivet is improved, and meanwhile the connecting part and the self-puncturing connecting riveting part are made of different materials so that the performance of the rivet can be optimized.

Description

Technical Field

[0001] The utility model relates to the technical field of self-piercing rivets, in particular to a composite structure self-piercing connecting rivet capable of realizing riveting and installation. Background Art

[0002] At present, the existing self-piercing rivet 1' is mainly composed of alloy steel. As Figure 1 shown, a riveting part 12' is only provided on one side of the flange 11', which is mainly used for connecting multi-layer panels of the same material or different materials. When the self-piercing rivet connects multi-layer plates, the flange 11' abuts against the upper plate, the riveting part 12' pierces through the upper plate, and deforms on the lower plate to form an internal self-locking structure, which cooperates with the flange 11' to ensure the stable connection of the multi-layer plates.

[0003] However, when using the existing self-piercing rivets to connect multi-layer plates, the riveting part has different elongation rate requirements for plates of different materials. When the elongation rate requirements cannot be met, internal cracks will be formed during the riveting process, resulting in ineffective connection. At the same time, the functions of the existing self-piercing rivets are relatively single, only applicable to the connection of high mechanical strength positions, not applicable to the single-layer connection between the same materials, and can only be used for riveting plates. When other parts need to be installed on the plates, additional installation parts need to be provided on the plates, resulting in damage to the plate structure and increasing the number and cost of setting the installation parts.

[0004] Therefore, how to effectively improve the functionality of the self-piercing rivet, enable the self-piercing rivet to simultaneously realize riveting and installation, reduce the damage of multiple installation parts to the plate structure, and reduce the connection and installation costs of the plates has become an urgent problem to be solved in this field. Content of the Utility Model

[0005] Aiming at the defects of the prior art, the purpose of the utility model is to provide a composite structure self-piercing connecting rivet capable of simultaneously realizing riveting and installation.

[0006] To achieve the above purpose, the composite structure self-piercing connecting rivet provided by the utility model is used to cooperate with a plate and a part to be installed on the plate. The rivet includes a flange and a self-piercing connecting riveting part integrally formed on one side of the flange.

[0007] A connecting part is connected to the other side of the flange.

[0008] Further, the connecting part adopts a connecting part of a first material, the self-piercing connecting riveting part adopts a self-piercing connecting riveting part of a second material, and the connecting part and the self-piercing connecting riveting part can form a fixed connection structure.

[0009] Further, the connecting part is welded to the other side of the flange.

[0010] Further, a connecting boss is provided on the other surface of the flange, and the connecting portion is connected and cooperated with the connecting boss.

[0011] Further, the connecting portion protrudes from the other surface of the flange.

[0012] Further, the connecting portion is adapted to the part and configured to be fixedly connected or detachably connected to the part.

[0013] Further, the connecting portion is composed of a single or multiple stepped members.

[0014] Further, the connecting portion is composed of a threaded post.

[0015] Further, a connecting groove is provided on the connecting portion.

[0016] Further, the cross-section of the flange is configured to be circular or polygonal.

[0017] The self-piercing connecting rivet with a composite structure provided by the present utility model integrally forms a self-piercing connecting riveting portion for self-locking riveting with a plate on one side of the flange, and a connecting portion for connecting and cooperating with a part is connected to the other side, so that while the rivet is riveted and fixed to the plate, the connection with the part can be realized, without arranging a plurality of connecting pieces on the plate, reducing the damage to the plate structure and the installation cost, and improving the functionality of the rivet. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present utility model will be further described below in conjunction with the drawings and specific embodiments.

[0019] Figure 1 is a schematic structural diagram of an existing self-piercing rivet;

[0020] Figure 2 is a schematic connection structure diagram of the self-piercing connecting rivet with a composite structure provided by the present utility model and a plate;

[0021] Figure 3 and Figure 4 is a schematic structural diagram of the self-piercing connecting rivet with a composite structure provided by the present utility model;

[0022] Figure 5 and Figure 6 is a schematic structural diagram of the connecting portion in the present utility model;

[0023] Reference numerals:

[0024] 1. Rivet; 11. Flange; 111. Connecting boss; 12. Self-piercing connecting riveting portion; 121. Piercing groove; 13. Connecting portion; 131. Single stepped member; 132. Multi-stepped member; 133. Threaded post;

[0025] 2. Plate; 21. Outer surface; 3. Part. Detailed implementation mode

[0026] In order to make the technical means, creative features, achieved purposes and effects realized by the present utility model easy to understand, the present utility model will be further described below in conjunction with specific illustrations.

[0027] See Figure 2 and Figure 3 , which shows an example of the self-piercing connecting rivet with a composite structure provided by the present utility model.

[0028] As can be seen from the figure, for the self-piercing connecting rivet with a composite structure in this example, the rivet 1 is used to cooperate with the plate 2 and the part 3 to be installed on the plate 2.

[0029] The rivet 1 mainly includes a flange 11. One side of the flange 11 forms a self-piercing connecting riveting part 12, and the other side is provided with a connecting part 13, so that the self-piercing connecting riveting part 12 of the rivet 1 pierces into the interior of the plate 2 to form a self-locking structure. The flange 11 is embedded in the plate 2 and cooperates with the outer surface 21 of the plate 2, so that the connecting part 13 is placed on the outer surface 21 of the plate 2 to cooperate with the part 3 for connection. Thus, while the rivet 1 is riveted and self-locked with the plate 2, the part 3 can be installed, without additionally arranging a mounting piece on the plate 2, reducing the damage to the structure of the plate 2, and at the same time improving the functionality of the rivet 1.

[0030] Furthermore, in order to enable the rivet 1 to evenly distribute stress during the riveting process, the cross-section of the flange 11 of the rivet 1 is preferably circular, and a piercing groove 121 is formed inside the self-piercing connecting riveting part 12. When the self-piercing connecting riveting part 12 pierces into the interior of the plate 2, the plate 2 fills the piercing groove 121. The two sides of the self-piercing connecting riveting part 12 are deformed and bent to form a self-locking structure with the plate 2. At the same time, the flange 11 is embedded in the plate 2 and cooperates with the outer surface 21 of the plate 2. The flange 11 can evenly disperse the load, reduce stress concentration, and thus improve the reliability and durability of the connection.

[0031] In some embodiments, the cross-section of the flange 11 can also be configured as a polygon or a special shape, so that the flanges 11 can be compactly arranged on the plate 2, so that the rivet 1 can be applied to the plate 2 with limited connection space, and at the same time increase the contact area between the flange 11 and the plate 2 to achieve a more reliable connection.

[0032] Furthermore, the self-piercing connecting riveting part 12 of the rivet 1 is configured to be the same as the constituent material of the plate 2, and the strength of the self-piercing connecting riveting part 12 is higher than that of the plate 2, so as to reduce stress concentration caused by material differences, reduce the risk of crack generation, and thus improve the integrity, stability and reliability of the connection.

[0033] Specifically, the self-piercing connecting riveting part 12 is made of the same material as the plate 2. Preferably, both the self-piercing connecting riveting part 12 and the plate 2 are made of aluminum or copper. Since aluminum and copper have relatively large coefficients of thermal expansion, the self-piercing connecting riveting part 12 and the plate 2 will have similar dimensional change rates when the temperature changes, which helps to maintain the stability of the connection, reduce stress concentration caused by temperature difference and potential fretting or fracture, and at the same time enables the rivet 1 to be used for self-locking riveting of a single-layer plate 2 to ensure the firmness of the connection.

[0034] Furthermore, the strength of the self-piercing connecting riveting part 12 is greater than that of the plate 2, so that the rivet 1 can bear greater loads and stresses, improving the connection firmness between the rivet 1 and the plate 2. At the same time, in the case of excessive load or impact on the rivet 1, the self-piercing connecting riveting part 12 may undergo plastic deformation or fracture prior to the plate 2 to protect the structure of the plate 2 from being damaged.

[0035] Thus, the rivet 1 is firmly riveted and self-locked with the plate 2. When installing the part 3 on the outer surface 21 of the plate 2, usually other mounting parts are additionally provided on the plate 2 to cooperate and connect with the part 3, which increases the number of mounting parts provided on the plate 2, damages the structure of the plate 2, and at the same time increases the installation cost and workload. In order to quickly install the part 3 and reduce the damage to the structure of the plate 2, a connecting part 13 is provided on the other side of the flange 11, so that when the self-piercing connecting riveting part 12 pierces into the plate 2 and the flange 11 is embedded in the plate 2 and cooperates with the outer surface 21 of the plate 2, the connecting part 13 can be placed on the outer surface 21 of the plate 2 to cooperate and connect with the part 3.

[0036] Furthermore, the connecting part 13 protrudes from the other side surface of the flange 11 to facilitate the cooperation and connection between the connecting part 13 and the part 3. In some embodiments, the connecting part 13 is directly welded to the flange 11 to ensure the firm connection between the connecting part 13 and the flange 11.

[0037] In some embodiments, a connecting boss 111 adapted to the connecting part 13 is provided on the flange 11, so that the connecting part 13 cooperates with the connecting boss 111 to connect the flange 11, thereby ensuring the structural integrity of the flange 11 and cooperating with the connecting part 13.

[0038] To optimize the structural performance of the rivet 1, the connecting part 13 is made of a first material connecting part, the self-piercing connecting riveting part 12 is made of a second material self-piercing connecting riveting part, and the first material is different from the second material.

[0039] For example, the self-piercing connecting riveting part 12 is made of the same aluminum as the plate 2, and the connecting part 13 is made of copper. Or, the self-piercing connecting riveting part 12 is made of the same copper as the plate 2, and the connecting part 13 is made of aluminum. While ensuring the stable connection between the self-piercing connecting riveting part 12 and the plate 2, the connecting part 13 cooperates with the self-piercing connecting riveting part 12 so that the rivet 1 combines the performance of different materials, has high corrosion resistance, high temperature resistance and light weight, optimizes the structural performance of the rivet 1, and at the same time improves the adaptability between the connecting part 13 and the part 3.

[0040] Furthermore, the connecting part 13 is configured to be adapted to the part 3 and can be fixedly connected or detachably connected to the part 3.

[0041] In some embodiments, the connecting part 13 is composed of a single-step member 131, so that the part 3 can be directly sleeved on the single-step member 131 and is in interference fit with the single-step member 131, thereby fixing the part 3 by the connecting part 13 and facilitating the disassembly of the part 3, as Figure 3 shown.

[0042] In some embodiments, the connecting part 13 can also be composed of a multi-step member 132, so that the connecting part 13 is a multi-layer protruding member on the flange 11, increasing the contact area between the connecting part 13 and the part 3, thereby improving the connection stability between the connecting part 13 and the part 3 and providing a better fixing and positioning effect for the part 3, as Figure 5 shown.

[0043] In some embodiments, the connecting part 13 can also be composed of a threaded post 133, so that the part 3 can be threadedly engaged with the connecting part 13 to adjust the installation height of the part 3 and facilitate the disassembly and replacement of the part 3, as Figure 6 shown.

[0044] In some embodiments, a connecting groove is formed on the connecting part 12, so that the part 3 can be snapped into the connecting groove and is stably connected to the connecting part 12.

[0045] Thus, by providing the self-piercing connecting riveting part 12 for riveting and locking the plate 2 on one side of the flange 11 and the connecting part 13 for installing the part 3 on the other side, the rivet 1 can not only be connected to the plate 2 but also install the part 3 on the plate 2, improving the functionality of the rivet 1. At the same time, only one installation part is provided on the plate 2 to achieve the riveting and installation functions, without the need to set other installation parts, ensuring the structural integrity and installation convenience of the plate 2.

[0046] The self-piercing connecting rivet with a composite structure provided by the present invention adopts a self-piercing connecting riveting part 12 made of the same material as the sheet 2, reduces stress concentration caused by material differences, avoids crack generation, and improves the connection reliability between the rivet 1 and the sheet 2. At the same time, a self-piercing connecting riveting part 1 and a connecting part 13 are respectively arranged on both sides of the flange 11, and the material of the connecting part 13 is different from that of the self-piercing connecting riveting part 12, so as to optimize the performance of the rivet 1, improve the functionality of the rivet 1, realize the functions of riveting and installation, and ensure the structural integrity and installation convenience of the sheet 2.

[0047] The above shows and describes the basic principles, main features and advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above embodiments. The above embodiments and the descriptions in the specification only illustrate the principles of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the present utility model claimed. The scope of protection claimed by the present utility model is defined by the appended claims and their equivalents.

Claims

1. A self-piercing connecting rivet with a composite structure, which is used to cooperate with a plate and a part to be installed on the plate. The rivet includes a flange and a self-piercing connecting riveting part integrally formed on one side of the flange. It is characterized in that, A connecting part is connected to the other side of the flange.

2. The self-piercing connecting rivet of the composite structure according to claim 1, characterized in that, The connecting part is a connecting part of a first material, and the self-piercing connecting riveting part is a self-piercing connecting riveting part of a second material. The connecting part and the self-piercing connecting riveting part can form a fixed connection structure.

3. The self-piercing connecting rivet of the composite structure according to claim 2, wherein The connecting part is welded to the other side of the flange.

4. The self-piercing connecting rivet of the composite structure according to claim 2, characterized in that, A connecting boss is provided on the surface of the other side of the flange, and the connecting part is connected and matched with the connecting boss.

5. The self-piercing connecting rivet of the composite structure according to claim 3 or 4, characterized in that, The connecting part protrudes from the surface of the other side of the flange.

6. The self-piercing connecting rivet of the composite structure according to claim 5, characterized in that, The connecting part is adapted to the part and is configured to be fixedly connected or detachably connected to the part.

7. The self-piercing connecting rivet of the composite structure according to claim 6, characterized in that, The connecting part is composed of a single or multiple stepped parts.

8. The self-piercing connecting rivet of the composite structure according to claim 6, characterized in that, The connecting part is composed of a threaded post.

9. The self-piercing connecting rivet of the composite structure according to claim 6, characterized in that, A connecting groove is provided on the connecting part.

10. The self-piercing connecting rivet of the composite structure according to claim 1, characterized in that, The cross-section of the flange is configured to be circular or polygonal.

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