Collapsible Bicycle Handlebars with Clamping Assembly
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Solution Overview
Problem
Conventional bicycles with protruding handlebars pose challenges for storage, transportation, and parking in limited spaces due to their inconvenient design.
Innovation Solution
A bicycle with collapsible handlebars featuring a clamping assembly and receiving tubes allows for easy folding and adjustment, enabling compact storage and parking by rotating and clamping the handlebars relative to the frame.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If conventional handlebars are used, then the bicycle structure is simple, but the bicycle occupies excessive storage space and is difficult to transport
Solution Approach 1:
The handlebar is designed with dynamic characteristics, allowing it to rotate between a horizontal riding position and a vertical folded position. The front fork and handle are capable of rotating simultaneously, transforming the rigid structure into a flexible one that adapts to different storage and usage conditions
Solution Approach 2:
The handlebar structure is divided into separable components with receiving tubes at the head tube and corresponding sections in the handlebar. The clamping assembly with clamping units can independently secure the handlebar sections, allowing the system to be segmented for folding while maintaining integrity during operation
2Ease of operation
If the handlebar is made fixed for stable riding, then the riding stability is improved, but the ease of storage and transportation is reduced
Solution Approach 1:
The handlebar system transitions from a static fixed structure to a dynamic adjustable one. During riding, the handlebar is secured in a fixed horizontal position for stability. For storage, the same handlebar can be rotated to a vertical position and secured, providing ease of storage without compromising riding stability when in use
Solution Approach 2:
The orientation parameter of the handlebar is changed between horizontal (for riding) and vertical (for storage). The clamping assembly adjusts its clamping force and position to maintain reliability in both configurations, allowing the system to adapt to different operational requirements
3Adaptability or versatility
If the handlebar structure is simplified, then the manufacturing cost is reduced, but the functionality for both riding and storage is compromised
Solution Approach 1:
The handlebar system is designed to perform multiple functions: it serves as a control mechanism during riding and transforms into a compact folded structure for storage. The front fork and handle can rotate simultaneously, and the clamping assembly provides securing functionality in both horizontal and vertical positions, making the system universal for both operational and storage conditions
Solution Approach 2:
The clamping assembly integrates multiple functions into a single mechanism: it can clamp the handlebar in the horizontal position for riding, allow rotation to vertical position, and secure the folded position. This merging of functions reduces the need for separate mechanisms for riding and storage modes
Data Source
AI summary
A bicycle has a bicycle frame, two handle bars, and a clamping assembly. The bicycle frame has a front fork having a steerer tube mounted within a head tube of the bicycle frame and a handle mount fastened to the steerer tube and having two receiving tubes longitudinally disposed at two sides of the head tube, respectively. The two handle bars are rotatably mounted to the two receiving tubes, respectively, and each handle bar has a first section inserted inside a corresponding one of the two receiving tubes and a second section integrally fixed to the first section. The clamping assembly has two clamping units respectively mounted around the two receiving tubes and an operating unit connected to the two clamping units and being configured to abut the two clamping units for respectively clamping the two receiving tubes.