Side-Roller Brake Layout for High-Speed Non-Motorized Vehicles
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Solution Overview
Problem
Conventional braking systems for non-motorized vehicles, such as longboards and skateboards, face challenges including limited space, inadequate braking performance at high speeds, wear and tear of components, and reduced effectiveness in wet conditions, leading to safety and reliability issues.
Innovation Solution
A braking system with pivotable rollers that pivot symmetrically between a freewheeling and braking position, utilizing a manual pushing mechanism and mechanical components, ensuring even wear and easy replacement of parts, and adaptable to different conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a conventional disc brake is used, then the braking system can be implemented with simple structure, but the braking effect is insufficient at high speeds due to limited space and smaller brake disc size
Solution Approach 1:
The invention transitions from a conventional disc brake configuration to a side-braking configuration where the brake roller contacts the wheel rim laterally. This dimensional change allows the brake roller to be positioned outside the wheel assembly, effectively increasing the braking leverage and contact area without being constrained by the limited space within the wheel, thereby achieving reliable high-speed braking
2Device complexity
If a disc brake is used, then the braking system can be implemented, but the brake disc is exposed to moisture and shows reduced braking performance in wet conditions
Solution Approach 1:
The invention extracts the brake roller from the enclosed wheel assembly and positions it on the outer periphery of the wheel. This extraction allows the brake roller to contact the wheel rim at a location less exposed to direct moisture impact, reducing the harmful effects of water on braking performance while maintaining the simplicity of the braking system structure
3Reliability
If a disc brake generates sufficient stopping force, then the wheel develops a flat spot requiring wheel replacement, but reducing force prevents effective stopping
Solution Approach 1:
The invention applies braking force locally at the side contact point between the brake roller and wheel rim, distributing the stress differently compared to conventional disc brakes. This localized side-braking approach achieves effective stopping force while reducing the concentrated radial stress that causes flat spot formation on the wheel, extending wheel life without compromising stopping effectiveness
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
Provides reliable and effective deceleration at high speeds, maintains consistent performance across varying conditions, and reduces maintenance needs, offering a flexible and cost-effective solution for non-motorized vehicles.
Implementation Method 1
The braking effect is achieved through even wear of the rollers
Data Source
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AI summary
A braking system for a non-motorized vehicle comprising: a main body comprising a main body plane, a thrust device comprising a guided thrust body, a first and a second joint, each joint comprising a first arm and a second arm, and wherein the first arm is pivotally connected to the main body parallel to the main body plane and pivotally connected to the second arm parallel to the main body plane, and the second arm is pivotally connected to the thrust body parallel to the main body plane and pivotally connected to the first arm parallel to the main body plane, a first roller which is rotatably mounted about a first roller axis lying in the main body plane, and a second roller which is rotatably mounted about a second roller axis lying in the main body plane,wherein the first roller axis is connected to the first arm of the first joint and the second roller axis is connected to the first arm of the second joint, and wherein the roller axes are pivotable symmetrically to one another between a freewheeling position and a braking position by a pushing movement of the pushing body.