Bicycle Tyre Damping Insert for Road Comfort
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Solution Overview
Problem
Conventional bicycle tires, particularly road bike tires, are stiff and uncomfortable due to the overlapping carcass structure below the tread, which limits their ability to adapt to the road surface, resulting in reduced riding comfort.
Innovation Solution
Incorporating a highly elastic cushioning rubber insert between the tread and the tire carcass, with two superimposed carcass plies that extend to the lateral edge areas of the tread, providing elasticity and improved adaptability, along with a cut-resistant fiber layer for puncture protection, while maintaining reduced rolling resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the carcass is arranged to overlap below the tread with 3 layers, then puncture protection and structural strength are improved, but the tire feels stiff and uncomfortable with reduced adaptability to road surface
Solution Approach 1:
The tire structure is segmented into distinct functional zones: the carcass plies are separated by a cushioning rubber insert below the tread, creating independent layers that can deform separately. This segmentation allows the carcass to maintain structural integrity while adapting to road surface variations, resolving the contradiction between strength and adaptability.
Solution Approach 2:
A cushioning rubber insert is introduced as an intermediary element between the carcass plies and the tread. This intermediary layer absorbs shocks and allows the carcass to better conform to the road surface, improving adaptability while maintaining the protective function of the multi-layer carcass structure.
2Adaptability or versatility
If a cushioning rubber insert is placed between the tread and tire carcass, then riding comfort and adaptability are improved, but rolling resistance may increase
Solution Approach 1:
The cushioning rubber insert is designed with specific material parameters (thickness of 0.3-1 mm, rebound value of 70-80) that optimize the balance between comfort and rolling resistance. By carefully controlling these parameters, the insert provides adequate cushioning without creating excessive deformation that would increase energy loss.
3Stability of the object's composition
If the two carcass plies have individual parallel reinforcements at angles, then the tire carcass rigidity is improved, but manufacturing complexity increases
Solution Approach 1:
Reinforcements are applied locally at specific angles (30-60 degrees) in the carcass plies where structural support is most needed, rather than uniformly throughout the entire tire. This localized approach achieves the required rigidity while simplifying the manufacturing process compared to uniform reinforcement patterns.
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 new tire construction significantly enhances riding comfort and puncture protection while maintaining low rolling resistance, optimizing the tire's ability to adapt to road surfaces and providing optimal driving experience.
Implementation Method 1
a cushioning rubber insert made of highly elastic caoutchouc is placed between the tread and the tire carcass
Implementation Method 2
The special thickness of the material of the dampening rubber insert significantly improves the riding comfort
Implementation Method 3
the damping rubber insert consists of a highly elastic rubber with a rebound material value between 70 and 80
Data Source
Figure 1
AI summary
The invention relates to a bicycle tyre with high riding comfort. A damping rubber insert (3) made from a highly elastic rubber is arranged between the tyre tread (2) and the tyre carcass. Said damping rubber insert (3) has a material thickness of between 0.2 and 2mm, and the carcass insert ends (10) extend to a maximum of the lateral edge areas of the tyre tread (2).