Bicycle Disc Brake Rotor Cooling Member Segmentation
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Solution Overview
Problem
Current bicycle disc brake rotors face inefficiencies in cooling, leading to increased temperatures and potential performance issues during prolonged use or high-intensity riding.
Innovation Solution
The design incorporates a friction member with a cooling member that has a surface area equal to or larger than 110% of the friction surface area, positioned radially inward without overlapping, to enhance cooling efficiency, and uses materials with higher thermal conductivity like aluminum for improved heat dissipation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If the cooling surface area is increased to improve cooling efficiency, then the temperature reduction is enhanced, but the device complexity increases
Solution Approach 1:
The cooling member is divided into multiple independent cooling surfaces positioned at different radial locations and orientations. Each cooling surface can be independently designed and manufactured, allowing for optimized heat dissipation from different regions of the friction member without requiring a monolithic complex structure.
Solution Approach 2:
Cooling surfaces are positioned not only radially inward but also at various axial and circumferential locations. This multi-dimensional arrangement of cooling surfaces maximizes the cooling surface area and effectiveness without proportionally increasing structural complexity, as the cooling function is distributed across multiple spatial dimensions.
2Temperature
If the cooling surface area is increased to improve cooling efficiency, then the heat dissipation is enhanced, but the manufacturing complexity increases
Solution Approach 1:
The cooling member is segmented into multiple independent cooling surfaces that can be manufactured separately using standard machining or casting processes. This segmentation allows each surface to be produced with conventional manufacturing techniques rather than requiring complex multi-step fabrication processes for a single large cooling structure.
Solution Approach 2:
Each cooling surface is designed with specific local characteristics optimized for its position and function. The cooling surfaces can have different geometries, orientations, and surface properties tailored to their specific thermal and mechanical requirements, allowing for optimized manufacturing of each region rather than a uniform complex structure.
3Temperature
If the cooling surface is positioned radially inward to utilize available space, then the cooling efficiency is improved, but the structural strength may be compromised
Solution Approach 1:
The cooling surfaces are segmented and positioned at specific radial locations inward from the friction member, rather than removing material from critical structural regions. This segmentation allows the rotor to maintain its outer structural integrity while providing cooling surfaces in less critical inner regions.
Solution Approach 2:
The cooling surfaces are positioned in regions radially inward from the friction member where the structural requirements are less demanding. This local positioning allows optimized cooling in non-critical areas while preserving the structural strength of the outer rotor components that bear the primary mechanical loads.
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
This configuration significantly improves cooling efficiency, reducing the friction member's temperature and maintaining wear resistance, while also optimizing the design for strength and weight reduction.
Implementation Method 1
The cooling member is made of a second material different from the first material. The second material has a second thermal conductivity. The second thermal conductivity is larger than the first thermal conductivity.
Implementation Method 2
The cooling member includes at least one cooling surface... significantly improves cooling efficiency
Data Source
AI summary
A bicycle disc brake rotor comprises a friction member, a cooling member, and a hub attachment member. The friction member includes at least one friction surface. The cooling member is coupled to the friction member. The cooling member includes at least one cooling surface. A surface area of the at least one cooling surface is equal to or larger than 110% of a surface area of the at least one friction surface. The hub attachment member is coupled to the friction member. The hub attachment member includes a hub engagement structure to engage with a bicycle hub assembly.