Synchronously Driven Brake Balancing Frame for Children Bicycles
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Solution Overview
Problem
Conventional brakes for children's bicycles require strong grip strength and can be difficult for small hands to operate, leading to prolonged braking distances and uneven wear on the wheel rim due to unbalanced forces during braking.
Innovation Solution
A synchronously driven brake system that evenly transmits actuating force to both braking blocks via a balancing frame and cable locking members, ensuring synchronized braking and reducing the need for strong grip strength, with restoring mechanisms to maintain tension and balance the forces applied.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a brake cable directly drives two braking blocks to move and contact a wheel rim, then the braking structure is simple, but the forces applied to the two braking blocks are uneven causing unbalanced friction force on the wheel rim and uneven wear
Solution Approach 1:
The patent introduces a balancing frame as an intermediary component between the brake cable and the two braking blocks. The brake cable connects to the balancing frame, which then connects to both braking blocks through pull cables. This intermediary structure ensures that the actuating force is evenly distributed to both braking blocks, achieving synchronous braking and balanced friction force on the wheel rim, while maintaining relative structural simplicity.
2Ease of operation
If oil disc brakes or disc brakes are used to reduce grip strength requirement, then the grip strength requirement is reduced, but the cost increases and the brake handle formation requirements become high making it difficult for children to operate
Solution Approach 1:
The patent employs a restoring portion that automatically restores the braking blocks to their initial positions after braking. The restoring portion includes restoring elements that utilize the elastic deformation of the brake cable and the mechanical structure itself to return the braking blocks to the non-braking state, eliminating the need for complex brake handle mechanisms with high formation requirements while keeping the operation simple for children.
3Device complexity
If conventional brakes rely on child's grip strength to clamp the wheel rim, then the structure is simple, but a long time of vigorous operation is required prolonging the braking distance
Solution Approach 1:
The patent introduces a dynamic balancing mechanism where the balancing frame can move and adjust during the braking process. This dynamic structure allows the system to automatically balance the forces on both braking blocks during operation, ensuring efficient and synchronous braking that reduces braking distance without requiring complex static mechanisms.
Solution Approach 2:
The balancing frame provides a feedback mechanism that automatically adjusts the distribution of braking forces. When one braking block applies more force than the other, the balancing frame moves to redistribute the force, ensuring optimal braking performance and reducing the time required to stop the bicycle.
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 system allows for synchronized braking on both sides of the wheel rim, reducing the force required for operation and preventing uneven wear, while maintaining radial stability and balancing the forces applied during braking.
Implementation Method 1
a restoring spring located between the cable holder and the cable locking member to apply a force in a direction away from the balancing frame
Data Source
AI summary
The present application relates to a synchronously driven brake, belonging to the field of vehicle brake devices. The synchronously driven brake includes a balancing frame configured to be connected with a brake cable and driven by the brake cable, wherein a pull cable is connected to the balancing frame and connected with two cable locking members, and configured to apply a same force to the two cable locking members; braking portions driven by the cable locking member to move and press against a wheel rim to decelerate the wheel rim are respectively connected to the cable locking members; and the synchronously driven brake further includes restoring portions applying to the braking portions a force enabling the braking portions to move away from the wheel rim.