Bicycle Handlebar Lock via Friction Cam and Cone Expander
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Solution Overview
Problem
Existing bicycle handlebar lock devices often lead to instability of the aheadset stem when parked, causing the bicycle to fall, and users may forget to unlock them before riding, resulting in accidents.
Innovation Solution
A bicycle handlebar lock device featuring a restrain cam set and a cone-shape expanding set that applies a preset static friction force to lock the aheadset stem, allowing it to be released with a rotating force greater than the friction force, ensuring stability and ease of use.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If a locking device is installed to prevent the aheadset stem from swaying and the bicycle from falling, then the stability during parking is improved, but the device complexity increases and users may forget to unlock it
Solution Approach 1:
The locking device transitions from a static locked state to a dynamic unlocked state through automatic detection of riding actions. The system dynamically adjusts its locking state based on real-time detection of handlebar movements, eliminating the need for manual operation while maintaining simplicity.
Solution Approach 2:
The system automatically detects riding actions through acceleration sensors and autonomously unlocks the aheadset stem without requiring user intervention. The device serves itself by monitoring its own operational context and making decisions about when to lock and unlock, reducing complexity of user interaction.
2Reliability
If a locking device is installed to prevent the bicycle from falling, then the safety during parking is improved, but the ease of operation deteriorates due to forgetting to unlock
Solution Approach 1:
The system automatically detects riding actions through acceleration sensors and autonomously unlocks the aheadset stem without requiring user intervention. The device serves itself by monitoring its own operational context and making decisions about when to lock and unlock, reducing complexity of user interaction.
Solution Approach 2:
The system continuously monitors acceleration data from sensors and uses this feedback to automatically determine when the bicycle is being ridden versus when it is parked. This closed-loop feedback mechanism ensures the locking device responds appropriately to actual usage conditions, eliminating forgetting to unlock.
3Stability of the object's composition
If the aheadset stem is tightly locked to prevent swaying, then the stability is improved, but the ability to rotate when riding deteriorates
Solution Approach 1:
The locking device transitions from a static locked state to a dynamic unlocked state through automatic detection of riding actions. The system dynamically adjusts its locking state based on real-time detection of handlebar movements, eliminating the need for manual operation while maintaining simplicity.
Solution Approach 2:
The system continuously monitors acceleration data from sensors and uses this feedback to automatically determine when the bicycle is being ridden versus when it is parked. This closed-loop feedback mechanism ensures the locking device responds appropriately to actual usage conditions, eliminating forgetting to unlock.
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 device effectively locks the aheadset stem to prevent falls during parking and allows easy unlocking with a rotating force, preventing accidents when users forget to unlock it.
Implementation Method 1
The cone-shape expanding set female joints the aheadset stem and thus provides a preset static friction force to the aheadset stem
Implementation Method 2
an elasticity member, wherein the elasticity member exerts an elastic force to push the slide piece
Data Source
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AI summary
A bicycle handlebar lock device is disclosed. The handlebar lock device is installed between an aheadset stem (100) and a head tube (110). The handlebar lock device includes a restrain cam set (200) and a cone-shape expanding set (300). The restrain cam set (200) is pivot installed at the head tube (110), and the cone-shape expanding set (300) female joints the aheadset stem (100) and is covered by the restrain cam set (200). The cam structure of the restrain cam set (200) can be rotate shifted to press the cone-shape expanding set (300), and thus the cone-shape expanding set (300) restrains the aheadset stem (100) by a predetermined static friction force. On the other hand, the cone-shape expanding set releases the aheadset stem when a rotating force which larger than the static friction force is applied to the aheadset stem.