Bicycle Handlebar Folding Mechanism with Wedge Lock
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Solution Overview
Problem
Existing manually operated products with dual extending handles face challenges in compact storage and transportation due to their fixed length and shape, which occupy significant space.
Innovation Solution
The implementation of foldable handles with a wedge locking mechanism and a release mechanism allows the handles to be locked and unlocked, enabling them to be folded into a compact position, utilizing knuckle joints and meshing gear sections for synchronized rotation and a spring-actuated wedge for automatic locking.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If fixed length handles are used, then operational functionality is maintained, but space occupation increases
Solution Approach 1:
The handlebar assembly transitions from a fixed configuration to a dynamic one, allowing the handlebars to rotate between a deployed position (providing steering functionality) and a folded position (reducing space occupation). The rotation mechanism enables the system to adapt its configuration based on operational needs versus storage requirements.
Solution Approach 2:
The handlebar assembly is divided into separable components: the handlebars themselves, the rotation mechanism, and the locking mechanism. This segmentation allows the handlebars to be independently rotated and folded relative to the frame while maintaining the integrity of the overall assembly through the locking system.
2Volume of moving object
If foldable handles are implemented, then space occupation is reduced, but device complexity increases
Solution Approach 1:
Multiple functions are merged into a single integrated assembly: the handlebar rotation mechanism, the wedge locking system, and the spring actuation are combined into one cohesive unit. The wedge simultaneously engages with both handlebars to lock them in position, while the spring provides automatic locking assistance, reducing the need for separate control mechanisms.
Solution Approach 2:
The spring-loaded wedge mechanism provides automatic locking functionality, where the spring force automatically engages the wedge to lock the handlebars in position without requiring additional actuators or complex control systems. The mechanism serves itself by using the spring's stored energy to maintain the locked state.
3Ease of operation
If wedge locking mechanism is used, then handling ease is improved, but manufacturing complexity increases
Solution Approach 1:
The wedge acts as an intermediary element between the spring actuation system and the handlebar locking function. Rather than directly actuating the handlebars, the spring moves the wedge, which then engages with the handlebars to provide the locking action. This intermediary mechanism translates linear spring motion into the rotational locking action needed.
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
This solution allows for efficient folding and storage of the handles, reducing space occupation while maintaining operational functionality, enabling one-handed folding and robust assembly with synchronized handle movement.
Implementation Method 1
a spring-actuated wedge for automatic locking
Implementation Method 2
A wedge may be engaged between the pair of handles and may lock the pair of handles in a first position
Implementation Method 3
meshing gear sections for synchronized rotation
Data Source
AI summary
A product may include a pair of handles that may be foldable. A wedge may be engaged between the pair of handles and may lock the pair of handles in a first position. A release mechanism may be connected to the wedge. Operation of the release mechanism may move the wedge to disengage from and to unlock the handles and may enable moving the pair of handles to a folded position.