Buggy Braking Rod and Wheel Recess Mechanism
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Solution Overview
Problem
Existing buggy braking mechanisms are difficult to move from a free position to a braking position due to strong clamping action, making them inefficient and cumbersome to use.
Innovation Solution
A braking mechanism that includes a movable braking rod with a recess in the wheel, allowing rotation limitation by inserting the rod into a radial recess, and a pedal system with a torsion spring for easy switching between free and braking positions, ensuring compactness and ease of use.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If a clamping mechanism is used to engage the wheel outer surface for braking, then the braking action is strong and effective, but the mechanism becomes difficult to move to the braking position due to strong clamping action
Solution Approach 1:
The braking action is extracted from continuous clamping contact to a discrete locking action where the braking rod engages a recess in the wheel. This allows the mechanism to achieve strong braking force through positive engagement rather than continuous friction, making it easier to actuate.
Solution Approach 2:
Instead of applying continuous clamping force to brake, the mechanism inverts the approach by using a release mechanism - the braking rod is spring-loaded to engage the recess automatically, and a pedal releases it. This inversion makes the braking action easier to initiate while maintaining strong braking force.
2Reliability
If a braking mechanism with strong clamping action is used, then the wheel rotation is effectively limited, but the mechanism becomes cumbersome and difficult to operate
Solution Approach 1:
The braking mechanism is segmented into distinct functional components: a braking rod for engagement, a pedal for actuation, a spring for automatic engagement, and recesses in the wheel. This segmentation allows each component to be simple and straightforward, reducing overall complexity while ensuring reliable wheel rotation limitation.
Solution Approach 2:
The spring-loaded braking rod provides self-service by automatically engaging the wheel recess when the pedal is released, eliminating the need for complex control mechanisms. The system self-regulates the braking action through the spring force, simplifying the overall device complexity while maintaining reliable rotation limitation.
3Volume of moving object
If the braking rod extends at a distance from the wheel in the free position, then the mechanism achieves compact composition, but the braking rod must be precisely aligned with the recess for engagement
Solution Approach 1:
The braking rod and wheel recess are designed with dynamic alignment capability through the pedal actuation mechanism. The pedal allows the braking rod to move dynamically into alignment with the recess during engagement, compensating for any initial misalignment and reducing manufacturing precision requirements while maintaining compact dimensions.
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 provides a compact, efficient, and easy-to-use braking mechanism that effectively limits wheel rotation for braking and easily reverts to a free position, enhancing user convenience and operational efficiency.
Implementation Method 1
a pedal system with a torsion spring for easy switching between free and braking positions
Data Source
AI summary
A buggy includes a frame, at least one wheel coupled to the frame and formed with a recess, and a braking mechanism provided to the wheel and including a braking rod that has a first end. The braking mechanism is movable between a free position, where the first end of the braking rod is free from the wheel and the wheel is rotatable, and a braking position, where the first end of the braking rod is received in the recess in the wheel such that the rotation of the wheel is limited.