Bicycle Handlebar Grip Fixation via Through-Bolt Extraction
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Solution Overview
Problem
Conventional bicycle handlebar grips become loose over time, especially during heavy-duty off-road riding, posing safety risks and interfering with the rider's operation of the bicycle due to exposed rings and bolts.
Innovation Solution
A control module mounted on the handlebar comprising a base with a hole having different sections, a grip with protrusions fitting into the larger section, and a bolt for secure fixation, ensuring the grip is firmly attached without obstructing the rider's operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If rings and bolts are used to fix the grip to the handlebar, then the grip can be firmly fixed, but the exposed rings and bolts interfere with rider operation and may hurt the rider's hands
Solution Approach 1:
The harmful exposed rings and bolts are extracted from the grip structure. The patent uses a through-bolt that passes completely through the grip and handlebar, eliminating the need for external rings and head bolts that interfere with rider operation. Only the bolt head and nut are visible at the ends, removing the interference problem while maintaining strong fixation.
Solution Approach 2:
The fixation components are merged into a more integrated structure. The through-bolt combines the functions of multiple fastening elements into a single component that secures the grip to the handlebar without requiring separate rings and multiple bolts, thereby reducing interference with rider operation.
2Device complexity
If conventional grips are used, then the structure is simple, but the grips become loose after long-term usage or heavy-duty off-road riding
Solution Approach 1:
The through-bolt is designed with a pressing member that preliminarily compresses the grip against the handlebar before final tightening. This preliminary compression action ensures firm initial fixation and prevents loosening during long-term usage or heavy-duty riding conditions.
Solution Approach 2:
The pressing member features a curved or spherical contact surface that distributes compression forces evenly across the grip and handlebar interface. This curved design enhances the mechanical interlocking and prevents the grip from becoming loose under varying load conditions.
3Ease of operation
If a through-bolt with pressing member is used to fix the grip, then the grip is firmly fixed without interference, but the device structure becomes more complex
Solution Approach 1:
The through-bolt assembly serves multiple functions simultaneously: it acts as a fastening element, a compression element, and a positioning element. The pressing member integrated into the bolt structure provides both fixation and compression functions in a single component, reducing overall structural complexity despite the enhanced functionality.
Data Source
AI summary
A control module, which is mounted on a handlebar of a bicycle, includes a base, a grip, a control bar, and a bolt. The base has a hole, and the hole has a first section and a second section, wherein the second section is bigger than the first section. The base is fitted to the handlebar whereby a sidewall of the first section touches the handlebar. The grip is fitted to the handlebar, and has a portion received in the second section of the hole of the base. The control bar is provided on the base to control a brake module or a derailleur module. The bolt is provided on the base, wherein both the base and the grip are fixed to the handlebar at the same time by tightening the bolt.