Bicycle Brake Synchronization via Intermediary Channeled Portion
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Solution Overview
Problem
Conventional bicycle brakes fail to swing synchronously, leading to uneven force application on the wheel rim, prolonged brake reaction time, and excessive wear on one braking member, resulting in a poor braking effect.
Innovation Solution
A bicycle brake system with a base fixedly connected to the frame, featuring a first arm assembly and a second arm assembly that swing synchronously upon brake line activation, ensuring both sides of the wheel rim are braked simultaneously, with a channeled portion maintaining a fixed position to facilitate synchronized contact and reduce wear.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the cable adjuster is fixedly disposed on the first arm assembly, then the structure is simple, but the first and second arm assemblies do not contact the brake faces synchronously, prolonging brake reaction time
Solution Approach 1:
A channeled portion is introduced as an intermediary component between the first arm assembly and the cable adjuster. The channeled portion is fixedly connected to the base and guides the cable adjuster, allowing it to move independently from the first arm assembly. This intermediary structure enables synchronized movement of both arm assemblies without complicating the overall design.
Solution Approach 2:
The brake assembly is segmented into independent functional components: the base with channeled portion, the first arm assembly, the second arm assembly, and the cable adjuster. This segmentation allows the cable adjuster to be decoupled from the first arm assembly, enabling independent optimization of each component's movement and timing.
2Device complexity
If the first arm assembly contacts the brake face first, then the structure is simple, but the braking effect is poor due to uneven force distribution and excessive wear on one side
Solution Approach 1:
The channeled portion acts as a mediator that coordinates the movement of the cable adjuster relative to both arm assemblies. By fixing the channeled portion to the base and allowing the cable adjuster to slide within it, the system ensures that force is transmitted evenly to both arm assemblies, resulting in simultaneous contact with the brake faces and balanced force distribution.
Solution Approach 2:
The system achieves equipotentiality in terms of force distribution by ensuring both arm assemblies are subjected to equal braking forces simultaneously. The channeled portion and cable adjuster mechanism create a balanced force transmission path, making both brake contact points equivalent in terms of force application timing and magnitude.
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 solution reduces brake reaction time, evenly distributes force across both braking members, and prevents excessive wear, thereby enhancing the braking effectiveness and safety of the bicycle.
Implementation Method 1
the second end portion is swingable toward a first brake side of a wheel rim to frictionally contact the first brake side
Implementation Method 2
the fourth end portion is swingable toward a second brake side of the wheel rim to frictionally contact the second brake side of the wheel rim
Data Source
AI summary
A brake for a bicycle includes a base, first and second arm assemblies. The first and second arm assemblies are pivoted to the base. The first arm assembly has a first end portion, for connection of a brake line a second end portion for frictionally contacting a brake side of a wheel rim. The second arm assembly is pivoted to the base and corresponds to the first arm assembly. The second arm assembly has a third end portion, a fourth end portion and a second abutting portion which is arranged on the third end portion. The second abutting portion is located correspondingly above the first abutting portion and interferable with the first abutting portion in a pivoting direction of the first abutting portion. The fourth end portion is swingable toward the brake side to clip the other brake side of the wheel rim.