A square rivet screw
By designing a square riveting screw, the problem of thread failure in automotive fasteners during wear and bumps was solved, achieving stable connection and efficient assembly. It is suitable for both manual and automated assembly, improving the safety and service life of automotive parts.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NINGBO YONGGUAN HEAVYINDUSTRY MASCH CO LTD
- Filing Date
- 2025-06-24
- Publication Date
- 2026-07-21
AI Technical Summary
Existing automotive fasteners are prone to thread failure due to wear and bumps during use, which affects their service life. Furthermore, problems such as steering and slippage can easily occur during assembly, affecting assembly efficiency and safety.
Design a square riveting screw, including a flange, an adjusting cylinder, a riveting square, a buffer arc, and a threaded post. Through the design of the riveting square and the buffer arc, bilateral positioning and stable connection are achieved, which is suitable for manual and automated assembly.
It avoids turning and slipping during assembly, improves assembly efficiency and safety, is applicable to various assembly methods, and extends the service life of fasteners.
Smart Images

Figure CN224533218U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of automotive fasteners, specifically to a high-efficiency square riveting screw used on automotive panel holes. Background Technology
[0002] With the development of science and technology and the rapid evolution of automotive products, lightweight design has become imperative. Automotive parts are a crucial area for my country's automotive industry to participate in globalization; therefore, fastener products face higher requirements, demanding greater safety and cost-effectiveness to better cope with the ever-changing market. These high requirements often necessitate specialized designs to meet user needs, while also requiring more advanced and sophisticated forming processes.
[0003] After a vehicle has been driven for a period of time, changes in the quality of its parts, connectors, and fasteners can occur due to factors such as wear and tear on components, severe bumps caused by uneven road surfaces, damage to chassis parts, and tire wear. These changes can lead to safety issues such as abnormal tire wear, accelerated component wear, vehicle instability during driving, and increased fuel consumption. During maintenance and disassembly, fasteners such as bolts need to be removed. Repeated disassembly and reassembly can cause thread failure in fasteners such as bolts, easily leading to resonance and fatigue damage, thus affecting the product's lifespan.
[0004] With the expansion of the domestic automobile consumer market and the increasing diversification of people's car usage concepts, newer and more comprehensive fastener products are needed to better cope with the ever-changing market and create a better and more convenient automotive safety experience for consumers. For bolted fasteners installed on positions such as tailgate hinges and front subframes, problems such as jamming and slippage often trouble assemblers.
[0005] Therefore, there is still room for improvement in existing fastener technologies. Utility Model Content
[0006] The purpose of this invention is to provide a high-efficiency riveting screw with a threaded end for connection, in order to solve the existing technical problems.
[0007] To achieve the above objectives, this utility model provides a square riveting screw for fixing automotive sheet metal. The screw includes a flange, an adjusting cylinder, a riveting cuboid, a buffer arc, and a threaded post. The flange, adjusting cylinder, riveting cuboid, buffer arc, and threaded post are connected sequentially. The flange is an annular plate; the adjusting cylinder is a circular cylinder used to adjust the screw length; the riveting cuboid is a square plate including two corresponding riveting parallel surfaces and two corresponding adjusting notches used to adjust the position of the sheet metal connection hole; the buffer arc has an arc-shaped cross-section, and the diameter of the buffer arc facing the riveting cuboid is larger than the diameter facing the threaded post; the threaded post is used to connect and fix other components after the riveting cuboid is inserted into the sheet metal connection hole.
[0008] According to the preferred embodiment of the present invention, the flange portion includes an axisymmetric flange arc surface and a square mounting countersunk hole. The flange arc surface is concentric, and the parallel surfaces of the two square mounting countersunk holes of the flange portion are parallel to the two riveting parallel surfaces of the riveting cuboid.
[0009] According to the preferred embodiment of the present invention, the square riveting screw further includes a planar cylindrical portion, which is located between the buffer arc portion and the threaded column for an arc transition.
[0010] According to the preferred embodiment of the present invention, the thread of the threaded post is a standard thread.
[0011] The design concept of this application is to design a riveting screw with a threaded connection at the tail end, which directly forms a double-sided positioning without turning when installing the workpiece; avoiding problems such as turning, slippage, and damage to the sheet metal during the assembly process; when ordinary pins are tilted or screwed into the inner hole in other abnormal ways, problems such as turning, jamming, and seizing are prone to occur, affecting assembly efficiency and operational safety; compared with ordinary guide bolts, this square riveting screw has a riveting cube and a buffer arc section with an arc cross section added to the middle section. When inserted into the sheet metal connection hole, it can be guided into the fixed position through two corresponding adjustment notches, and smoothly inserted into the sheet metal connection hole to play a fixing role. In addition, the workpiece is pressed against the buffer arc section without squeezing the sheet metal. This square riveting screw is suitable for both manual assembly and automated assembly.
[0012] Compared with the prior art, the present invention has the following advantages:
[0013] First, this application directly forms a four-sided double-sided positioning during installation. When positioned on both sides, the force of the assembly is directly applied to the threaded column without turning.
[0014] Second, this application adds threads to the tail. When inserting into the plate connecting hole, the plate-like parts can be riveted by riveting the cuboid and then connected to other parts. The direction of the riveted cuboid can be used both left and right when assembling, reducing the difficulty of assembly positioning and identification.
[0015] Third, this application applies to both manual assembly and automated assembly.
[0016] Of course, implementing any specific embodiment of the content of this application does not necessarily have all of the above technical effects at the same time. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the screws used in this application;
[0018] Figure 2 for Figure 1 A diagram showing the view from the right.
[0019] Figure 3 for Figure 1 A left-side view diagram. Detailed Implementation
[0020] The present invention will be described in detail below with reference to the accompanying drawings.
[0021] Please refer to Figure 1 This application presents a screw schematic diagram. This application is a riveting screw with a threaded connection function at the tail end. When installing with the opposite part, it directly forms a double-sided positioning without turning, which can avoid problems such as turning, slippage, and damage to the plate during the assembly process. Compared with ordinary guide bolts, the screw of this application has a riveting cuboid added in the middle section. When it is inserted into the plate connection hole, it can be guided into the fixed position through two corresponding adjustment notches, and smoothly inserted into the plate connection hole to play a fixing role.
[0022] like Figure 1As shown, the square riveting screw of this application is used to fix automotive sheet metal and can be screwed onto a matching part after the sheet metal is connected. The screw includes a flange 11, an adjusting cylinder 12, a riveting cuboid 13, a buffer arc portion 14, and a threaded post 15. The flange 11, adjusting cylinder 12, riveting cuboid 13, buffer arc portion 14, and threaded post 15 are sequentially connected and integrally formed. The flange 11 is an annular plate. The circular design of the flange 11 facilitates insertion into the connecting hole of the sheet metal for countersunk riveting and also results in an aesthetically pleasing appearance. The adjusting cylinder 12 is a circular cylinder used to adjust the screw length, that is, the screw length can be adjusted by adjusting the adjusting cylinder. The length of column 12 is adjusted to control the insertion depth of the riveted cuboid 13, achieving product diversity. The riveted cuboid 13 is a square piece including two corresponding riveting parallel surfaces and two corresponding adjustment notches 131, used to adjust the position of the plate connection hole. In other words, the riveted cuboid 13 is a cylinder with four parallel cuts at equidistant points at the center, each cutting off a corner at the included angle, resulting in four straight lines and four diagonal lines connected. In terms of processing technology, the riveted cuboid 13 is formed by a single cold extrusion. The layout of tooling and equipment ensures consistency in the width, height, and diagonal lines of the riveted cuboid. Figure 2 As shown, the center of the flange 11 and the center of the riveting cuboid 13 are concentric. This design allows for a clear understanding of the angle position of the flange 11 after the riveting cuboid 13 has been effectively riveted, facilitating connection with the matching parts. Conversely, after positioning the flange 11, the position and direction of the riveting parallel plane and the adjustment notch 131 of the riveting cuboid 13 can also be determined, facilitating the connection between the riveting cuboid 13 and the matching parts to complete the riveting function. The cross-section of the buffer arc 14 is arc-shaped, and the buffer arc 14 faces the... The diameter of one side of the riveting cuboid 13 is larger than the diameter of the side facing the threaded post 15. When the nut is screwed into the threaded post 15, the connecting piece rests against the buffer arc 14 with the larger diameter to prevent it from squeezing the plate. The threaded post 15 is used to connect and fix other parts after the riveting cuboid 13 is inserted into the connecting hole of the plate. The center of the threaded post 15 is concentric with the center of the riveting cuboid 13. This design allows the angle position of the threaded post 15 to be clearly known after the riveting cuboid 13 is effectively riveted, which facilitates connection with the connecting piece.
[0023] Please refer to Figure 1 and Figure 3 The flange portion 11 includes an axisymmetric flange arc surface and a square mounting countersunk hole 111. The flange arc surface is concentric. The two parallel surfaces of the square mounting countersunk hole 111 of the flange portion 11 are parallel to the two riveting parallel surfaces of the riveting cuboid 13. The square mounting countersunk hole 111 can be used to insert a square screwdriver during assembly to prevent rotation.
[0024] Figure 1 The screw further includes a planar cylindrical portion 16, which is located between the buffer arc portion 14 and the threaded post 15 for an arc-shaped transition. Furthermore, the thread of the threaded post 15 is a standard thread, and the threaded post 15 passes through the riveted plate and can continue to connect to other components via threads.
[0025] It should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore should not be construed as limiting the scope of protection of this application.
[0026] In the description of this application, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is usually based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this application and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this application; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.
[0027] At the same time, it should be understood that, for ease of description, the dimensions of the various parts shown in the accompanying drawings are not drawn according to actual scale.
[0028] Compared with the prior art, the present invention has the following advantages:
[0029] First, this application directly forms a four-sided double-sided positioning during installation. When positioned on both sides, the force of the assembly is directly applied to the threaded column without turning.
[0030] Second, this application adds threads to the tail. When inserting into the plate connecting hole, the plate-like parts can be riveted by riveting the cuboid and then connected to other parts. The direction of the riveted cuboid can be used both left and right when assembling, reducing the difficulty of assembly positioning and identification.
[0031] Third, this application applies to both manual assembly and automated assembly.
[0032] The above-disclosed embodiments are only a few specific examples of this utility model, but this utility model is not limited thereto. Any variations that can be conceived by those skilled in the art should fall within the protection scope of this utility model.
Claims
1. A square riveting screw for fixing automotive sheet metal, characterized in that, The screw includes a flange, an adjusting cylinder, a riveting cuboid, a buffer arc, and a threaded post, which are connected sequentially. The flange is an annular plate; the adjusting cylinder is a circular cylinder used to adjust the screw length; the riveting cuboid is a square plate including two corresponding riveting parallel surfaces and two corresponding adjusting notches used to adjust the position of the plate connecting hole; the buffer arc has an arc-shaped cross-section, and the diameter of the buffer arc facing the riveting cuboid is larger than the diameter facing the threaded post; the threaded post is used to connect and fix other components after the riveting cuboid is inserted into the plate connecting hole.
2. The square riveting screw as described in claim 1, characterized in that, The flange portion includes an axisymmetric flange arc surface and a square mounting countersunk hole. The flange arc surface is concentric, and the parallel surfaces of the two square mounting countersunk holes of the flange portion are parallel to the two riveting parallel surfaces of the riveting cuboid.
3. The square riveting screw as described in claim 2, characterized in that, The screw also includes a planar cylindrical portion, which is located between the buffer arc portion and the threaded post for an arc transition.
4. The square riveting screw as described in claim 3, characterized in that, The thread of the threaded post is a standard thread.