Riveting Assembly Notch Engagement Anti-Torque
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional riveting methods in electronic products with chassis structures face issues of weak connection strength due to small contact areas and lack of anti-torque and anti-tensile capabilities, often requiring secondary processing to enhance fastening strength.
Innovation Solution
A riveting assembly with a base plate featuring a riveting hole containing notches, where the riveting piece is stamped to engage with these notches, providing enhanced anti-torque capability, and further improved through secondary processing like stamping to enhance anti-tensile strength.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional riveting method is used with small contact area, then processing time is short, but connection strength is weak
Solution Approach 1:
The riveting hole is segmented into multiple notches (first notch, second notch, third notch, fourth notch) arranged in a circular pattern. This segmentation allows the riveting piece to engage with multiple discrete points around the hole perimeter, distributing the connection strength across multiple engagement points while maintaining a simple single-step riveting process.
Solution Approach 2:
The notches are positioned asymmetrically at specific angular intervals (e.g., 0°, 90°, 180°, 270°) around the riveting hole. This asymmetric arrangement creates optimal engagement geometry with the riveting piece, maximizing mechanical interlocking strength without requiring additional processing steps.
2Device complexity
If conventional riveting piece is used without notches, then device complexity is low, but anti-torque capability is poor
Solution Approach 1:
The notches are pre-formed in the base plate at the riveting hole location before the riveting piece is installed. This preliminary action ensures that when the riveting piece is inserted and deformed, it automatically engages with the pre-positioned notches, providing immediate anti-torque capability without requiring complex pre-processing of the riveting piece itself.
Solution Approach 2:
The riveting piece automatically engages with the notches through its own deformation during the riveting process. The deformation of the riveting piece causes it to snap into the notches, providing self-aligning anti-torque engagement without requiring external alignment tools or complex installation procedures.
3Ease of manufacture
If minimum distance requirement is not met between riveting piece centerline and edge material, then ease of manufacture is improved, but fastening strength is insufficient
Solution Approach 1:
The solution transitions from relying solely on radial distance (single dimension) to utilizing angular distribution (adding another dimension). By arranging notches at specific angular intervals around the riveting hole, the system achieves strong engagement even when the radial distance from centerline to edge is small, effectively adding an angular dimension to the engagement geometry.
Solution Approach 2:
The notches create localized engagement zones at specific positions around the riveting hole. Instead of requiring uniform strength distribution across the entire riveting interface, the local quality of each notch provides concentrated engagement points that collectively deliver sufficient fastening strength even with reduced overall dimensions.
Data Source
AI summary
A riveting assembly includes a base plate and a stud. The base plate has a first surface, a second surface, and a riveting hole. The riveting hole is communicated with the first surface and the second surface and has at least one notch. The stud includes a main body and a riveting structure. The main body abuts against the second surface and covers the riveting hole. The riveting structure is connected to the main body. The riveting structure protrudes out from the riveting hole to abut against the first surface and to be engaged with the notch. A portion of the base plate is clamped between the main body and the riveting structure.