A novel riveting structure

Abstract

This application relates to the field of connection structure technology, and provides a novel riveting structure, including a workpiece body and a riveting block disposed on one side of the workpiece body. A first groove is provided on the side of the workpiece body away from the riveting block, and a second groove is provided on the inner wall of the first groove. The inner diameter of the first groove is larger than the inner diameter of the second groove. This novel riveting structure significantly improves the shear strength, tensile strength, and impact resistance of the riveted connection without increasing material usage or changing the size of the riveting block.

Description

Technical Field

[0001] This application relates to the field of connection structure technology, and in particular to a novel riveting structure. Background Technology

[0002] Riveting is a common, non-removable connection method widely used in various industrial products. (Reference) Figure 1 Existing riveting structures include a workpiece body and a riveting block disposed on one side of the workpiece body. To form the riveting block, the manufacturing process involves machining one side of the workpiece body inward to form a groove; correspondingly, the other side of the workpiece body protrudes outward to form the riveting block. This "one-sided concave, one-sided convex" structural design is highly efficient in processing, enabling the riveting block to be formed in one step, reducing manufacturing complexity and cost.

[0003] However, the forming of the rivet block in this riveting structure is essentially achieved by causing local displacement of the workpiece material. That is, the protrusion height of the rivet block and the recess depth of the groove correspond at the material level. This also results in the thickness of the connection between the rivet block and the workpiece body being significantly smaller than the original thickness of the workpiece body. This also leads to poor connection strength between the rivet block and the workpiece body, making it very easy for the rivet block to break.

[0004] Faced with this situation, on the one hand, directly increasing the overall thickness of the workpiece body would lead to increased material consumption, product weight, and cost; on the other hand, directly increasing the diameter of the rivet block might be subject to strict limitations imposed by the overall product design space and assembly relationships. Therefore, a riveting structure is needed that does not increase the overall thickness of the workpiece body (i.e., does not increase material consumption) and does not change the basic dimensions of the rivet block. Utility Model Content

[0005] To address the aforementioned problems, this application provides a novel riveting structure.

[0006] The novel riveting structure provided in this application adopts the following technical solution: A novel riveting structure includes a workpiece body and a riveting block disposed on one side of the workpiece body. A first groove is provided on the side of the workpiece body away from the riveting block, and a second groove is provided on the inner wall of the first groove. The inner diameter of the first groove is larger than the inner diameter of the second groove.

[0007] By adopting the above technical solution, and by setting a second groove with a smaller inner diameter in the first groove, the connection thickness between the riveting block and the workpiece body is increased, thereby improving the effective shear resistance area and pull-out resistance area at the connection between the riveting block and the workpiece body; and by making the riveting block forming amount the same as the recessed volume of the first and second grooves, the amount of workpiece material in the riveting structure can be kept unchanged; thus, without increasing the amount of material, the shear resistance, pull-out resistance and impact resistance of the riveting connection are significantly improved.

[0008] Optionally, the inner diameter of the first groove is larger than the outer diameter of the rivet block.

[0009] By adopting the above technical solution, the thickness of the connection position between the root of the riveting block and the workpiece body can be further increased, thereby further improving the connection strength.

[0010] Optionally, the second concave shape is conical.

[0011] By adopting the above technical solution, the cross-section of the second groove is set to V-shape, which facilitates demolding in the injection molding process. On the other hand, the V-shaped second groove can increase the connection thickness between the rivet block and the workpiece body while increasing its depth, thereby further improving the connection strength.

[0012] Optionally, the second groove is semi-circular in shape.

[0013] By adopting the above technical solution, the smooth semi-circular transition can reduce stress concentration points, thereby dispersing the stress when the rivet block is under force, so that the rivet structure has extremely high durability and the longest service life under dynamic loads such as vibration and impact.

[0014] Optionally, the connection between the sidewall of the first groove and the bottom wall of the first groove is made with a rounded corner transition.

[0015] By adopting the above technical solution, the rounded corner provides a smooth and continuous transition, allowing the stress flow to be evenly distributed over a larger area and eliminating stress concentration points.

[0016] Optionally, a third groove is provided on the side of the second groove away from the first groove.

[0017] By adopting the above technical solution, increasing the rounded corner means that more material is needed to fill this corner. By creating a smaller third groove within the same area, an equal amount of material is removed, thus ensuring that the total material volume of the workpiece remains absolutely unchanged. At the same time, the third groove and the second groove form a second-level step. This is equivalent to adding a smaller, integrated reinforcing boss inside.

[0018] Optionally, the diagonal of the first groove is perpendicular to the diagonal of the second groove.

[0019] By adopting the above technical solutions, the shear resistance of the workpiece can be increased, and the service life of the workpiece can be improved.

[0020] Optionally, the workpiece body includes a first workpiece and a second workpiece connected to the first workpiece. The riveting block is integrally formed with the first workpiece. The second groove is formed in the first workpiece, and the first groove is formed in the second workpiece. The first workpiece has a plurality of insertion slots, and the second workpiece has a plurality of insertion blocks for insertion and engagement with the insertion slots.

[0021] By adopting the above technical solution, the first workpiece uses high-performance materials to ensure the core connection strength, and the second workpiece uses low-cost materials to undertake auxiliary functions, thereby reducing costs without sacrificing overall performance.

[0022] In summary, this application includes at least one of the following beneficial technical effects: 1. By setting a second groove with a smaller inner diameter in the first groove, the connection thickness between the rivet block and the workpiece body is increased, thereby improving the effective shear resistance area and pull-out resistance area at the connection between the rivet block and the workpiece body. 2. Simultaneously setting a rounded corner and a third groove, the rounded corner provides a smooth and continuous transition, allowing stress flow to be evenly distributed over a larger area and eliminating stress concentration points; increasing the rounded corner means that more material is needed to fill this corner, and by opening a smaller third groove within the same area, an equal amount of material is removed, thus ensuring that the total material volume of the workpiece remains absolutely unchanged. Attached Figure Description

[0023] Figure 1 This is a structural diagram of the background technology; Figure 2 This is a partial cross-sectional view of Example 1; Figure 3 This is a partial cross-sectional view of Embodiment 2; Figure 4 This is a partial cross-sectional view of Example 3; Figure 5 This is a partial cross-sectional view of Example 4; Figure 6 This is a schematic diagram of the workpiece body in Example 4.

[0024] Explanation of reference numerals in the attached drawings: 1. Workpiece body; 11. First workpiece; 12. Second workpiece; 13. Insertion block; 14. Insertion groove; 2. Riveting block; 3. First groove; 4. Second groove; 5. Third groove. Detailed Implementation

[0025] The following is in conjunction with the appendix Figure 2-6 This application will be described in further detail.

[0026] Example 1: This application discloses a novel riveting structure.

[0027] Reference Figure 2 A novel riveting structure includes a workpiece body 1 and a riveting block 2. The workpiece body 1 can be made of various materials, such as aluminum alloy or carbon steel. The shape and size of the workpiece can be designed and adjusted according to the actual scenario. The riveting block 2 can be integrally formed with the workpiece body 1. The riveting block 2 and the workpiece body 1 are made of the same material to ensure good connection performance. The shape of the riveting block 2 can be rectangular or cylindrical. In this embodiment, the riveting block 2 is set as rectangular. The riveting block 2 and the workpiece body 1 are formed by injection molding.

[0028] A first groove 3 is formed on the side of the workpiece body 1 away from the riveting block 2, and the first groove 3 is directly opposite the riveting block 2. In this embodiment, the inner diameter of the first groove 3 is larger than the outer diameter of the riveting block 2, so as to reduce the depth of the first groove 3, thereby increasing the thickness of the connection position between the root of the riveting block 2 and the workpiece body 1, and further improving the connection strength. The shape of the first groove 3 can be rectangular, and the mold head that is processed into the first groove 3 is also rectangular. This facilitates the manufacturing of the mold head and reduces the cost. Moreover, the mold head has high structural strength, which can extend the service life of the mold.

[0029] The second groove 4 is located on the side of the first groove 3 near the workpiece body 1. The second groove 4 is truncated pyramidal in shape, which provides a natural draft angle during injection molding, reducing demolding resistance and mold wear, and improving production efficiency and mold life. At the same time, the inclined structure transforms the axial pull-out force borne by the rivet block 2 into radial compressive stress on the groove wall, significantly enhancing the pull-out strength through the mechanical self-locking effect, and achieving a smooth transition of stress along the inclined surface without increasing the amount of material used.

[0030] In other embodiments, the shape of the second groove 4 can be conical, that is, the cross-sectional shape of the second groove 4 is V-shaped. Setting the cross-section of the second groove 4 to be V-shaped facilitates demolding in the injection molding process. On the other hand, the V-shaped second groove 4 can increase its depth, thereby increasing the connection thickness between the rivet block 2 and the workpiece body 1 and further improving the connection strength.

[0031] The shape of the second groove 4 can also be semi-circular, and the cross-sectional shape of the second groove 4 is also semi-circular; the smooth transition of the semi-circle can reduce stress concentration points, thereby dispersing the stress when the rivet block 2 is subjected to force, so that the rivet structure has extremely high durability and the longest service life under dynamic loads such as vibration and impact.

[0032] The implementation principle of Embodiment 1 of this application is as follows: The novel riveting structure of this embodiment increases the connection thickness between the riveting block 2 and the workpiece body 1 by reasonably setting the first groove 3 and the second groove 4 on the workpiece body 1, without increasing the overall thickness of the workpiece body 1 or changing the basic dimensions of the riveting block 2. This improves the effective shear resistance area and pull-out resistance area at the connection between the riveting block 2 and the workpiece body 1. Compared with traditional riveting structures, this avoids the problems of poor connection strength and easy breakage caused by the thickness of the connection part between the riveting block 2 and the workpiece body 1 being less than the original thickness of the workpiece body 1. It also avoids the problems of increased material usage and limitations imposed by product design space.

[0033] Example 2: This application discloses a novel riveting structure.

[0034] Reference Figure 3 The difference between Embodiment 2 and Embodiment 1 is that the connection between the side wall and the bottom wall of the first groove 3 is made of rounded corner. The rounded corner transition can reduce stress concentration and improve the overall strength and durability of the workpiece.

[0035] A third groove 5 can also be provided on the side of the second groove 4 away from the first groove 3. Increasing the arc angle means that more material is needed to fill this corner. By opening a smaller third groove 5 in the same area, an equal amount of material is removed, thereby ensuring that the total material volume of the workpiece remains absolutely unchanged. At the same time, the third groove 5 and the second groove 4 form a second step.

[0036] Example 3: This application discloses a novel riveting structure.

[0037] Reference Figure 4 The difference between Embodiment 3 and Embodiment 1 is that: the workpiece body 1 includes a first workpiece 11 and a second workpiece 12 connected to the first workpiece 11, the riveting block 2 is integrally formed with the first workpiece 11, the second groove 4 is formed in the first workpiece 11, and the first groove 3 is formed in the second workpiece 12; the first workpiece 11 uses high-performance materials to ensure the core connection strength, and the second workpiece 12 uses low-cost materials to undertake auxiliary functions, thereby reducing costs without sacrificing overall performance.

[0038] The first workpiece 11 has multiple insertion slots 14, and the second workpiece 12 has multiple insertion blocks 13 for interlocking with the insertion slots 14. The first workpiece 11 and the second workpiece 12 can be formed by two-stage injection molding. When the first workpiece 11 is injection molded, the amount of material required for the riveting block 2 is matched with the spatial volume of the second groove 4 and the insertion slot 14 to facilitate the forming of the riveting block 2. When the second workpiece 12 is formed, the material enters the insertion slot 14 to form the insertion block 13, which can increase the connection strength between the first workpiece 11 and the second workpiece 12 and improve the structural stability.

[0039] Example 4: This application discloses a novel riveting structure.

[0040] Reference Figure 5 and Figure 6 The difference between Embodiment 4 and Embodiment 1 is that the diagonal of the first groove 3 and the diagonal of the second groove 4 are set perpendicularly; without increasing the amount of material used, the shear resistance area at the root of the rivet block 2 is increased, thereby improving the connection strength; at the same time, this structure reduces stress concentration, improves fatigue life, and reduces the possibility of deformation of the rivet block 2.

[0041] The above are preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made to the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A novel riveting structure, characterized in that: The workpiece includes a workpiece body (1) and a riveting block (2) disposed on one side of the workpiece body (1). A first groove (3) is provided on the side of the workpiece body (1) away from the riveting block (2). A second groove (4) is provided on the inner wall of the first groove (3). The inner diameter of the first groove (3) is larger than the inner diameter of the second groove (4).

2. The novel riveting structure according to claim 1, characterized in that: The inner diameter of the first groove (3) is larger than the outer diameter of the rivet block (2).

3. The novel riveting structure according to claim 1, characterized in that: The second groove (4) is conical in shape.

4. The novel riveting structure according to claim 1, characterized in that: The second groove (4) is semi-circular in shape.

5. A novel riveting structure according to claim 1, characterized in that: The connection between the side wall of the first groove (3) and the bottom wall of the first groove (3) is made of rounded corners.

6. A novel riveting structure according to claim 5, characterized in that: The second groove (4) has a third groove (5) on the side away from the first groove (3).

7. A novel riveting structure according to claim 1, characterized in that: The diagonal of the first groove (3) is perpendicular to the diagonal of the second groove (4).

8. A novel riveting structure according to claim 1, characterized in that: The workpiece body (1) includes a first workpiece (11) and a second workpiece (12) connected to the first workpiece (11). The riveting block (2) is integrally formed with the first workpiece (11). The second groove (4) is formed on the first workpiece (11), and the first groove (3) is formed on the second workpiece (12). The first workpiece (11) has a plurality of insertion slots (14), and the second workpiece (12) has a plurality of insertion blocks (13) for insertion and engagement with the insertion slots (14).

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