Stroller Braking Cam and Gear Mechanism
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Solution Overview
Problem
Current baby strollers do not easily transition between collapsed and operative positions, making them cumbersome and difficult to move, as they lack efficient mechanisms for compact configuration and motorized movement.
Innovation Solution
A braking system for strollers is introduced, featuring a brake pedal, a rotatable braking cam, and a brake lever with teeth that engage gears to control wheel movement, allowing for easy transition between positions through manual or motorized operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a braking system with brake pedal and braking cam is implemented, then the ease of operation is improved, but the device complexity increases
Solution Approach 1:
The braking system is divided into separate functional components: brake pedal, braking cam, brake lever, and gear engagement mechanism. Each component performs a specific function, allowing the system to achieve reliable braking while maintaining modular complexity that can be managed during manufacturing and assembly.
Solution Approach 2:
The braking cam is designed to be rotatable from a first position to a second position, transforming the static brake pedal input into dynamic cam rotation. This dynamic mechanism enables the brake lever to engage and disengage gears automatically based on cam position, improving operational ease while containing complexity through controlled motion.
2Adaptability or versatility
If the stroller allows movement between collapsed and operative positions, then the adaptability is improved, but the reliability worsens
Solution Approach 1:
The braking cam acts as an intermediary mechanism between the brake pedal and the gear engagement. It translates the braking force into controlled cam rotation, which then mediates the engagement and disengagement of the brake lever with the gears. This intermediary mechanism ensures reliable positioning while enabling the stroller to transition between collapsed and operative states.
Solution Approach 2:
The patent replaces purely mechanical folding mechanisms with a system that incorporates gear engagement and braking control. This substitution allows for more precise and reliable positioning of the stroller components, enabling smooth transitions between positions while maintaining structural integrity and safety.
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 braking system enables smooth and efficient movement between collapsed and operative positions, enhancing usability and reducing the effort required to manage the stroller, while also allowing for automatic folding and unfolding mechanisms.
Implementation Method 1
a braking cam operationally coupled to the brake pedal and rotatable around a pivot point from a first position to a second position
Implementation Method 2
a brake lever having a first end configured to contact the braking cam when the braking cam is in the second position, and a second end having a plurality of teeth configured to engage at least one gear driven by the first rear wheel of the stroller
Implementation Method 3
wherein the brake shoes are positioned to contact the wheel rim
Data Source
AI summary
A braking system for a stroller includes: a brake pedal positioned near a first rear wheel of the stroller; a braking cam operationally coupled to the brake pedal and rotatable around a pivot point from a first position to a second position; and a brake lever having a first end configured to contact the braking cam when the braking cam is in the second position, and a second end having a plurality of teeth configured to engage at least one gear driven by the first rear wheel of the stroller when the braking cam is in the second position. A depression of the brake pedal causes the braking cam to rotate around the pivot point from the first position to the second position, thereby causing the teeth of the brake lever to engage the at least one gear to prevent rotation of the first rear wheel.