Bicycle Stem Bolt Concealment Structure for Clean Fork Assembly
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Solution Overview
Problem
Existing bicycle stem and front fork connection structures expose fixing fasteners, compromising both functionality and aesthetics, particularly for non-competitive riders who prioritize appearance.
Innovation Solution
A bicycle stem bolt hidden structure featuring a base, connecting member with a threaded hole and annular groove, and a cap with buckles that engage with the groove to create a hidden bolt space, securing the stem to the front fork head tube while concealing the bolt.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a bolt is used to secure the stem to the front fork head tube, then the connection strength is improved, but the appearance is worsened due to exposed fasteners
Solution Approach 1:
The cap is nested over the connecting member and bolt, with buckles that engage with the annular peripheral groove on the connecting member. This nesting structure hides the exposed bolt while maintaining the secure connection between the stem and front fork head tube, resolving the contradiction between connection strength and appearance.
2Reliability
If multiple components (stem cap, start nuts, bolts) are used to secure the stem, then the reliability of connection is improved, but the device complexity increases
Solution Approach 1:
The cap integrates multiple functions: it covers the connecting member and bolt for aesthetic purposes, while its buckles engage with the annular peripheral groove on the connecting member to provide securing functionality. This merging of covering and fastening functions into a single cap component reduces the number of separate parts while maintaining connection reliability.
3Ease of operation
If the bolt is exposed for secure engagement, then the ease of assembly is improved, but the aesthetic quality is worsened
Solution Approach 1:
The cap acts as an intermediary component between the user and the bolt. During assembly, the user interacts with the cap (screwing it on like a regular stem cap), which internally engages with the connecting member through buckles and the annular groove. This intermediary structure maintains ease of assembly while hiding the bolt from view.
Data Source
AI summary
A bicycle stem bolt hidden structure is provided. The bicycle stem bolt hidden structure includes a base, a connecting member and a cap. The base includes a handlebar side on one end and a tube-through hole on the other end. The connecting member is movably disposed on one side of the tube-through hole; wherein the connecting member has a threaded hole and an annular peripheral groove; and The cap includes a plurality of buckles annularly disposed on one side of the cap; wherein the cap covers the connecting member, and the plurality of buckles engage with the annular peripheral groove, so that the cap and the connecting member forms a bolt hidden space. In use, the plurality of buckles engage the annular peripheral groove, so that the exposed bolt can be hidden in the bolt hidden space.