Bicycle Frame Clamp Adapter for Non-Round Carbon Frames
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Solution Overview
Problem
Conventional bicycle clamps are inefficient for non-round frame structures, often requiring disassembly, risking damage from over-clamping, and are difficult to use on carbon fiber frames due to mismatched contours and uneven weight distribution.
Innovation Solution
A bicycle clamp adapter with pivotably connected arms that match the frame contour, allowing controlled clamping pressure and easy manipulation, featuring a first arm with a frame section and a second arm with a clamp section to engage the clamp, preventing over-clamping and maintaining gravitational balance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If conventional clamps with planar jaw faces are used on non-round frame structures, then clamping force can be applied, but the clamp contours do not match the frame shape causing concentrated stress and potential damage
Solution Approach 1:
The clamp jaw faces are designed with different contour shapes (round, oval, teardrop, airfoil) to match specific frame geometries. This local customization of the contact surface geometry ensures that clamping force is distributed evenly across the frame surface rather than concentrated at discrete points, preventing damage while maintaining effective clamping.
2Reliability
If expandable clamps are used to engage the seat tube, then the clamp can be secured to the frame, but the seat post must be removed first increasing service time
Solution Approach 1:
An adapter component is introduced as an intermediary between the clamp and the bicycle frame. The adapter engages the frame tube externally without requiring removal of the seat post or other components. This intermediary device translates the clamping force from the clamp to the frame through a shaped interface that matches the frame geometry, achieving secure engagement while eliminating the time-consuming seat post removal step.
3Ease of operation
If moveable jaw clamps are used to suspend the bicycle, then the clamp can engage the frame, but the user must manually position and balance the bicycle during clamping which is difficult and risks frame damage
Solution Approach 1:
The clamp system incorporates self-positioning features including shaped jaw faces that naturally guide the clamp onto the correct portion of the frame, and automatic balancing mechanisms that allow the bicycle to self-align during the clamping process. The gravitational axis alignment features and contour-matched interfaces enable the system to self-correct positioning errors, eliminating the need for manual balancing while preventing frame damage through controlled engagement.
Data Source
AI summary
An adapter includes a first arm and a second arm that is pivotably connected to the first arm. A first portion of the first and second arms cooperate to form a contour which generally matches a contour of a portion of a bicycle frame. A second portion of the first and second arms are constructed to engage one another such that, during a clamping process, the adapter engages the bicycle frame with a desired gripping pressure. Preferably, the gripping pressure is less than a pressure that would crush or otherwise deform the frame of the bicycle.