Downhill Bicycle Grip With Non-Uniform Thickness
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Solution Overview
Problem
Downhill bicycle grips face challenges in maintaining grip strength during long descents due to decreased rider grip force, particularly as the ulnar nerve is not adequately protected, leading to discomfort and reduced security.
Innovation Solution
A downhill bicycle handle design featuring an inner sleeve of hard plastic with a conical gripping element made of softer plastic, providing a thicker outer area for better damping and a smaller inner area to protect the ulnar nerve, combined with a clamping mechanism that allows secure attachment to the handlebar with minimal torque requirement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the gripping element is made uniformly thick to provide adequate damping, then comfort is improved, but grip security deteriorates because the inner area becomes too thick for easy gripping by thumb and index finger
Solution Approach 1:
The gripping element features non-uniform thickness distribution with a thicker outer area (30-34mm) for damping and a thinner inner area (28-30mm) for easy gripping. This local variation in geometry allows different regions to serve different functions: the outer area provides cushioning and nerve protection while the inner area maintains accessibility for the thumb and index finger, resolving the contradiction between comfort and grip security
2Ease of operation
If the gripping element is made thicker to protect the ulnar nerve and improve damping, then comfort is improved, but the gripping force decreases more rapidly
Solution Approach 1:
The gripping element implements localized thickness variation where the outer area is thicker (30-34mm) to provide damping and nerve protection, while the inner area remains thinner (28-30mm) to maintain grip strength. This local differentiation allows the thicker outer region to cushion the ulnar nerve without compromising the grip force transmitted through the thinner inner region where the hand actually grasps the handlebar
3Reliability
If a fixing element is added to secure the inner sleeve to the handlebar, then reliability is improved, but device complexity increases
Solution Approach 1:
The fixing element is designed as a separate, modular component that can be independently manufactured and assembled. This segmentation allows the fixing element to be optimized for secure attachment while keeping the overall assembly manageable. The fixing element can be attached to the inner sleeve and then secured to the handlebar, providing reliable attachment without requiring complex integrated designs
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 design enhances grip security and comfort by distributing force effectively, reducing grip strength decline and ensuring secure handling even during intense downhill rides, while minimizing torque requirements for assembly.
Implementation Method 1
the damping properties of the grip element can be improved. This means that the gripping force decreases less quickly. This is particularly due to the fact that the ulnar nerve running in the area of the little finger in the ball of the hand is spared.
Data Source
Figure 1~2
AI summary
A downhill bicycle grip has an inner sleeve (10). The inner sleeve (10) is surrounded by a gripping element (28). A fixing element (20) can be connected to the inner sleeve (10) to secure the downhill bicycle grip to a bicycle handlebar. The gripping element (10) has a larger circumference on its outer surface (30) than on its inner surface (32).