A riveted fastener

Abstract

The utility model discloses a riveting fastener, be equipped with first recess through being located in riveting portion and be equipped with second recess in support portion, especially first recess is located the end outer wall of riveting portion extension to support portion direction, and support portion extends to the first support surface of the direction of formation, and second recess is located on the first support surface, in the riveting process of riveting fastener and sheet metal, and sheet metal is extruded and occurs plastic deformation, and metal material flows into first recess and second recess, can strengthen riveting intensity, and the effect of reinforcing resistance to torsion is enhanced, prevents riveting fastener and draws off, reduces the risk of riveting fastener and sheet metal and slips.

Description

Technical Field

[0001] This utility model relates to the field of connector technology, and in particular to a riveting fastener. Background Technology

[0002] Fasteners are commonly used to connect and secure two or more components, forming a stable mechanical structure. This connection is typically achieved through mechanical forces (such as friction, interlocking mechanisms, and elastic deformation). Various types of fasteners can be found in all kinds of machinery, roads, bridges, and structural buildings. In self-punching riveting, the pressure applied by a riveting tool allows the specific structure of the fastener to penetrate thicker materials, punching a hole that matches the shape of the fastener, thus completing the riveting process.

[0003] See the appendix to the specification of GB / T 12615.1-2004, "Closed-type flat round head blind rivets, grade 11," or the patent document with application number CN2022101368725. Figure 1 All of these studies disclose existing traditional riveting fasteners, which include a top riveting section, a middle contour section, and a lower rod section. However, these fasteners suffer from poor torsional resistance, slippage, or easy pull-out. This is mainly because the contour section lacks any structural design, causing the fastener to rotate with the sheet metal during the riveting process. This results in insufficient torsional resistance, and excessive force can cause the fastener to detach from the sheet metal. In addition, the riveting section lacks a special anti-pull-out structure, making it easy for the fastener to be pulled away from the sheet metal when subjected to outward tension. Utility Model Content

[0004] To address the problems of poor torsion resistance, slippage, and easy pull-out in existing riveting fasteners, this invention provides a riveting fastener with strong torsion resistance and that is not prone to slippage or pull-out.

[0005] The technical solution of this utility model is as follows:

[0006] This utility model discloses a riveting fastener, including a riveting part, a support part, and a rod part. The riveting part is provided with a first groove, and the support part is provided with a second groove. The first groove is located on the outer wall of the end of the riveting part extending towards the support part. The support part extends towards the rod part to form a first support surface, and the second groove is provided on the first support surface.

[0007] Furthermore, the first groove and the second groove are either continuous grooves or discontinuous grooves.

[0008] Furthermore, a first protrusion is provided in the second groove.

[0009] Furthermore, the support portion extends further toward the rod portion to form a second support surface, the second support surface being located on the outer ring of the first support surface, and the second support surface having a second protrusion.

[0010] Furthermore, the riveting part is provided with an inner hole, and the bottom of the inner hole is provided with a receiving groove.

[0011] Preferably, the receiving groove is a boss-type receiving groove, which is an annular groove formed on the inner bottom surface of the inner hole and along the inner wall of the inner hole, with a protrusion formed in the middle of the annular groove.

[0012] Preferably, the receiving groove is a concave-platform receiving groove, wherein the concave-platform receiving groove has a hole opened on the inner bottom surface of the inner hole, and the edge of the hole is spaced from the inner wall of the inner hole.

[0013] Preferably, the receiving groove is an inner wall convex receiving groove, which is a convex ring provided on the inner wall of the inner hole, and the convex ring and the bottom surface of the inner shell form a placement space.

[0014] Preferably, the receiving groove is an inner wall concave receiving groove, which is a concave ring provided on the inner wall of the inner hole, and the concave ring is positioned higher than the bottom surface of the inner hole.

[0015] Furthermore, the top edge of the riveted part is provided with an end face.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows: by providing a first groove in the riveting part and a second groove in the support part, especially the first groove being located on the outer wall of the end of the riveting part extending towards the support part, the support part extending towards the rod part to form a first support surface, and the second groove being provided on the first support surface, during the riveting process between the riveting fastener and the sheet metal, the sheet metal is subjected to compression and undergoes plastic deformation, and the metal material flows into the first and second grooves, which can strengthen the riveting strength, enhance the anti-torsion effect, prevent the riveting fastener from being pulled out, and reduce the risk of the riveting fastener slipping off the sheet metal. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of Example 1;

[0018] Figure 2 This is a top view of the structure of Example 1;

[0019] Figure 3 This is a cross-sectional structural diagram of the boss-type receiving groove in Example 1;

[0020] Figure 4 This is a cross-sectional structural diagram of the concave platform type receiving groove in Example 1;

[0021] Figure 5 This is a schematic cross-sectional view of the inner wall convex accommodating groove in Example 1;

[0022] Figure 6 This is a schematic cross-sectional view of the concave inner wall receiving groove in Example 1.

[0023] Figure 7 This is a schematic diagram of the structure of the riveting fastener of this utility model before it is connected to the sheet metal;

[0024] Figure 8 This is a schematic diagram of the structure of the riveting fastener and sheet metal connection in this utility model;

[0025] Figure 9 This is a schematic diagram of the structure of the riveting fastener of this utility model after it is connected to the sheet metal.

[0026] Figure 10 This is a schematic diagram of the overall structure of Example 2;

[0027] Figure 11 This is a top view of the structure of Example 2;

[0028] Figure 12 This is a schematic diagram of the overall structure of Example 3;

[0029] Figure 13 This is a top view of the structure of Example 3;

[0030] Reference numerals: 1. Riveting part; 11. First groove; 12. Inner hole; 13. End face; 2. Support part; 21. First support surface; 211. Second groove; 212. First protrusion; 22. Second support surface; 221. Second protrusion; 3. Rod part; 4. Receiving groove; 41. Boss-type receiving groove; 411. Annular groove; 412. Protrusion; 42. Concave-type receiving groove; 421. Hole; 422. Spacing; 43. Inner wall convex receiving groove; 431. Protruding ring; 432. Placement space; 44. Inner wall concave shape; 441. Concave ring; 5. Sheet metal; 6. Mold. Detailed Implementation

[0031] Now refer to the attached diagram, Figure 1Riveting fasteners for connection with other parts are depicted. During installation onto a metal panel, they are riveted and attached to pre-drilled holes formed in the metal panel. That is, the riveting fasteners can be self-piercing and self-riveting fasteners, which both pierce holes in the metal panel and rivet themselves to the metal panel during installation. It should be noted that although the illustrated embodiment is a bolt, other nuts, screws, studs, self-piercing and self-riveting fasteners, such as, for example, self-piercing and / or self-riveting studs, are within the scope of this invention. For brevity, most of the following description will refer to rivets. It should be understood that this disclosure also applies to self-piercing and / or self-riveting studs.

[0032] Please refer to Figures 1-13 This utility model provides a riveting fastener, including a riveting part 1, a support part 2, and a rod part 3. The riveting part 1 extends from one end of the support part 2 and is cylindrical. The rod part 3 extends from the other end of the outline part 2. A central axis "X" is drawn on the riveting fastener. The riveting part 1, the support part 2, and the rod part 3 are coaxial with the central axis "X". The surface of the rod part 3 may be provided with threads, and the threads extend from a layer away from the support part 2.

[0033] Example 1

[0034] Reference Figure 1 and Figure 2 The riveting part 1 is provided with a first groove 11, and the supporting part 2 is provided with a second groove 211. The first groove 11 is located on the outer wall of the end of the riveting part 1 extending towards the supporting part 2. The supporting part 2 extends towards the rod part 3 to form a first supporting surface 21. The second groove 211 is provided on the first supporting surface 21. The first groove 11 and the second groove 211 are both discontinuous, that is, multiple first grooves 11 are equally spaced around the riveting part 1. Alternatively, multiple first grooves 11 can be spaced apart from each other at unequal intervals around the riveting part 1. Multiple second grooves 211 are equally spaced around the first supporting surface 21. Alternatively, multiple second grooves 211 can be spaced apart from each other at unequal intervals around the first supporting surface 21.

[0035] During the riveting process, the sheet metal 5 is compressed and undergoes plastic deformation. The material of the sheet metal 5 flows into the first groove 11 and the second groove 211. Compared with traditional riveting fasteners without any structural design, the first groove 11 and the second groove 211 have positions to clamp the sheet metal 5, thereby strengthening the riveting strength, making the riveting fastener less likely to be pulled out, and reducing the risk of the riveting fastener slipping off the sheet metal 5.

[0036] To increase the contact area between the riveting fastener and the sheet metal 5 during the riveting process, design 1: a first protrusion 212 is provided in the second groove 211; design 2: the support part 2 extends further towards the rod part 3 to form a second support surface 22, the second support surface 22 is located on the outer ring of the first support surface 21, and the second support surface 22 is provided with a second protrusion 221; it is worth noting that the first protrusion 212 and the second protrusion 221 do not necessarily need to appear at the same time, it is possible to only provide the first protrusion 212 or only provide the second protrusion 221.

[0037] During the riveting process, the sheet metal 5 is subjected to compression and undergoes plastic deformation. The first protrusion 212 or the second protrusion 221 is embedded in the sheet metal 5, which increases the contact area between the riveting fastener and the sheet metal 5 during the riveting process, thereby further strengthening the riveting strength and enhancing the anti-torsion effect.

[0038] Since it is necessary for the metal particles cut out by the riveting fasteners from the sheet metal 5 to not detach from the sheet metal 5 and the riveting fasteners, the riveting part 1 is further provided with an inner hole 12, and the bottom of the inner hole 12 is provided with a receiving groove 4.

[0039] Option 1, refer to Figure 3 The receiving groove 4 is a boss-type receiving groove 41. The boss-type receiving groove 41 is an annular groove 411 formed on the inner bottom surface of the inner hole 12 and along the inner wall of the inner hole 12. A protrusion 412 is formed in the middle of the annular groove 411.

[0040] Option 2, refer to Figure 4 The receiving groove 4 is a concave-shaped receiving groove 42, and the concave-shaped receiving groove 42 has a hole 421 opened on the inner bottom surface of the inner hole 12, and the edge of the hole 421 is spaced 422 from the inner wall of the inner hole 12.

[0041] Option 3, refer to Figure 5 The receiving groove 4 is an inner wall convex receiving groove 43, which is a convex ring 431 provided on the inner wall of the inner hole 12, and the convex ring 431 and the bottom surface of the inner shell form a placement space 432.

[0042] Option 4, refer to Figure 6 The receiving groove 4 is an inner wall concave receiving groove 44, which is a concave ring 441 provided on the inner wall of the inner hole 12, and the concave ring 441 is positioned higher than the bottom surface of the inner hole 12.

[0043] Furthermore, the top edge of the riveting part 1 is provided with an end face 13, so that the riveting part 1 presents a ring shape with a certain taper. During the riveting process, the end face 13 can play a better guiding role.

[0044] The riveting process of this fastener is now described in detail with reference to the attached drawings:

[0045] Before riveting, such as Figure 7 Sheet metal 5 has a disc-shaped structure and is located below the riveting part 1. The riveting fastener is vertically located at the upper end of sheet metal 5. The cutting edge has not yet started to cut sheet metal 5. The riveting fastener, sheet metal 5, and mold 6 are located on the same straight line.

[0046] The riveting assembly process, such as Figure 8 and Figure 9 The top edge of the riveting part 1 has an end face 13, which forms a chamferless cutting edge and supports the contact surface of the sheet metal 5. It gradually rivets and presses downwards. Under the action of force F, the sheet metal 5 gradually deforms and undergoes plastic deformation. The riveting part 1 gradually cuts the sheet metal 5 along the direction of force. The end faces 13 on both sides of the riveting part 1 deform. The sheet metal 5 is cut off by the chamferless cutting edge along the straight cutting edge shape. As the riveting fastener continues to apply force, the force F increases and continues to act. The riveting part 1 gradually bends and deforms in all directions, causing the sheet metal 5 to deform. Specifically, the sheet metal 5 gradually bends and deforms synchronously with the riveting part 1. The sheet metal 5 is pressed together with the first groove 11, the second groove 211, the first protrusion 212 and the second protrusion 221. The iron particles that are sheared off the sheet metal 5 are also compressed and embedded in the receiving groove 4.

[0047] Example 2

[0048] Reference Figure 10 and Figure 11 The difference from Embodiment 1 is that the first groove 11 and the second groove 211 are both continuous.

[0049] During the riveting process, the sheet metal 5 is compressed and undergoes plastic deformation. The material of the sheet metal 5 flows into the first groove 11 and the second groove 211. Compared with traditional riveting fasteners without any structural design, the first groove 11 and the second groove 211 have positions to clamp the sheet metal 5, thereby strengthening the riveting strength, making the riveting fastener less likely to be pulled out, and reducing the risk of the riveting fastener slipping off the sheet metal 5. The first protrusion 212 or the second protrusion 221 is embedded in the sheet metal 5, increasing the contact area between the riveting fastener and the sheet metal 5 during the riveting process, which can further strengthen the riveting strength and enhance the anti-torsion effect. The iron particles that are sheared off the sheet metal 5 under force are also compressed and embedded in the receiving groove 4, which can prevent the iron particles from falling out.

[0050] The difference from Example 1 is that the production process is simpler and the cost is lower.

[0051] Example 3

[0052] Reference Figure 12 and Figure 13The difference from Embodiment 1 is that the first groove 11 is discontinuous, while the second groove 211 is continuous.

[0053] During the riveting process, the sheet metal 5 is compressed and undergoes plastic deformation. The material of the sheet metal 5 flows into the first groove 11 and the second groove 211. Compared with traditional riveting fasteners without any structural design, the first groove 11 and the second groove 211 have positions to clamp the sheet metal 5, thereby strengthening the riveting strength, making the riveting fastener less likely to be pulled out, and reducing the risk of the riveting fastener slipping off the sheet metal 5. The first protrusion 212 or the second protrusion 221 is embedded in the sheet metal 5, increasing the contact area between the riveting fastener and the sheet metal 5 during the riveting process, which can further strengthen the riveting strength and enhance the anti-torsion effect. The iron particles that are sheared off the sheet metal 5 under force are also compressed and embedded in the receiving groove 4, which can prevent the iron particles from falling out.

[0054] The production process is simpler than that of Example 1, but more complex than that of Example 2.

[0055] In summary, with improved torsional resistance, the connection is less likely to fail due to structural deformation when the riveted fasteners are subjected to alternating torque. At the same time, the risk of slippage or pull-out is reduced during riveting operations, and the stress distribution is uniform during the riveting process, preventing material fatigue.

[0056] In terms of production process and production cost, the complexity and cost ranking are: Example 1 > Example 3 > Example 2.

[0057] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A riveting fastener, comprising a riveting portion (1), a support portion (2), and a rod portion (3), characterized in that, The riveting part (1) is provided with a first groove (11), and the support part (2) is provided with a second groove (211). The first groove (11) is located on the outer wall of the end of the riveting part (1) extending toward the support part (2). The support part (2) extends toward the rod part (3) to form a first support surface (21), and the second groove (211) is provided on the first support surface (21).

2. The riveting fastener according to claim 1, characterized in that, The first groove (11) and the second groove (211) are either continuous grooves or discontinuous grooves.

3. The riveting fastener according to claim 1, characterized in that, The second groove (211) is provided with a first protrusion (212).

4. The riveting fastener according to claim 1, characterized in that, The support portion (2) extends further toward the rod portion (3) to form a second support surface (22). The second support surface (22) is located on the outer ring of the first support surface (21). The second support surface (22) is provided with a second protrusion (221).

5. The riveting fastener according to claim 1, characterized in that, The riveting part (1) is provided with an inner hole (12), and the bottom of the inner hole (12) is provided with a receiving groove (4).

6. The riveting fastener according to claim 5, characterized in that, The receiving groove (4) is a boss-type receiving groove (41). The boss-type receiving groove (41) is an annular groove (411) formed on the inner bottom surface of the inner hole (12) and along the inner wall of the inner hole (12). A protrusion (412) is formed in the middle of the annular groove (411).

7. The riveting fastener according to claim 5, characterized in that, The receiving groove (4) is a concave-shaped receiving groove (42), and the concave-shaped receiving groove (42) has a hole (421) on the inner bottom surface of the inner hole (12), and the edge of the hole (421) is spaced (422) from the inner wall of the inner hole (12).

8. The riveting fastener according to claim 5, characterized in that, The receiving groove (4) is an inner wall convex receiving groove (43), which is a convex ring (431) provided on the inner wall of the inner hole (12), and the convex ring (431) and the bottom surface of the inner shell form a placement space (432).

9. The riveting fastener according to claim 5, characterized in that, The receiving groove (4) is an inner wall concave receiving groove (44), which is a concave ring (441) provided on the inner wall of the inner hole (12), and the concave ring (441) is positioned higher than the bottom surface of the inner hole (12).

10. The riveting fastener according to claim 1, characterized in that, The top edge of the riveting part (1) is provided with an end face (13).

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