Folding Frame Locking Structure with Shock-Absorbing Fastening Column
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Solution Overview
Problem
The existing fastening structures of folding bicycles are prone to damage from external forces, particularly when riding on uneven surfaces, leading to costly replacements when the fastening holes break.
Innovation Solution
A locking structure for folding frames that includes a case, pivoting axes, a fastening column with an inclined plane, and an elastic part, allowing for stable fastening and absorption of external shocks, preventing damage to the frame components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a simple fastening hole structure is used to connect the handle stem frame to the head tube, then the device complexity is reduced and ease of manufacture is improved, but the reliability deteriorates as the fastening hole breaks under external shocks
Solution Approach 1:
The fastening system is segmented into multiple components: a fastening column with a fastening head, a fastening body, and a fastening hole. The fastening column is separated from the frame body and inserted into the fastening hole, allowing the stress to be distributed across multiple parts rather than concentrating on a single drilled hole in the frame.
Solution Approach 2:
The fastening column acts as an intermediary component between the handle stem frame and the head tube. It absorbs and distributes the external shocks through its elastic deformation and the interaction between the fastening head and the abutting surface, protecting the frame from direct damage.
2Device complexity
If the fastening hole is directly drilled into the handle stem frame to simplify the structure, then the device complexity is reduced, but the strength deteriorates as the fastening hole becomes a stress concentration point prone to breaking
Solution Approach 1:
The fastening system is segmented into multiple components: a fastening column with a fastening head, a fastening body, and a fastening hole. The fastening column is separated from the frame body and inserted into the fastening hole, allowing the stress to be distributed across multiple parts rather than concentrating on a single drilled hole in the frame.
Solution Approach 2:
The fastening column is designed with a fastening head that abuts against the head tube before the fastening hole experiences excessive stress. This pre-positioned cushioning structure absorbs and distributes external shocks, preventing stress concentration at the fastening hole and avoiding frame damage.
3Stability of the object's composition
If a rigid fastening structure is used to prevent frame separation, then the stability is improved, but the durability worsens as the rigid structure cannot absorb external shocks and causes the fastening hole to break
Solution Approach 1:
The fastening column is designed to dynamically respond to external shocks. The fastening head can move relative to the frame body within the fastening hole, allowing elastic deformation and energy absorption. This dynamic behavior maintains stability during normal use while absorbing impact energy during shocks, preventing structural failure.
Solution Approach 2:
The fastening column is designed with a fastening head that abuts against the head tube before the fastening hole experiences excessive stress. This pre-positioned cushioning structure absorbs and distributes external shocks, preventing stress concentration at the fastening hole and avoiding frame damage.
4Strength
If the fastening structure abuts against the fastening position to prevent bending, then the strength is improved, but the harmful factors worsen as external shocks continuously stress the fastening hole causing it to break over time
Solution Approach 1:
The fastening column acts as an intermediary component between the handle stem frame and the head tube. It absorbs and distributes the external shocks through its elastic deformation and the interaction between the fastening head and the abutting surface, protecting the frame from direct damage.
Solution Approach 2:
The fastening column is designed with a fastening head that abuts against the head tube before the fastening hole experiences excessive stress. This pre-positioned cushioning structure absorbs and distributes external shocks, preventing stress concentration at the fastening hole and avoiding frame damage.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The locking structure ensures stable combination of the frames, absorbing external shocks and preventing separation, allowing for cost-effective maintenance by replacing only the affected components rather than the entire frame.
Implementation Method 1
a locking structure includes a case, a first pivoting axis, a second pivoting axis, a fastening column, a connecting column and a third pivoting axis. The case includes a top, a bottom and a container. The first pivoting axis is pivotally connected to the bottom and the first hole. The second pivoting axis is pivotally connected to the second hole.
Data Source
AI summary
A locking structure is applied to a folding frame. The folding frame includes a first frame and a second frame. The first frame includes a first hole. The second frame includes a second hole. The second frame can rotate relative to the first frame to fasten to the first frame. The locking structure includes a case, a first pivoting axis, a second pivoting axis, a fastening column, a connecting column and a third pivoting axis. The case includes a top, a bottom and a container. The first pivoting axis is pivotally connected to the bottom and the first hole. The second pivoting axis is pivotally connected to the second hole. The second pivoting axis includes a fastening groove. The fastening column is located in the container. The connecting column includes a connecting column first end and a connecting column second end.