Locking Release Lever for Bicycle Rack Ratchet Security
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Solution Overview
Problem
Bicycle racks with ratcheting mechanisms lack security features to prevent unauthorized removal of bicycles, allowing thieves to disengage the mechanism and steal the bike.
Innovation Solution
A locking release lever is integrated into the bicycle rack, featuring a swing lever and cam lock that secures the ratcheting mechanism in place, preventing disengagement and ensuring the bicycle remains secured until the lock is unlocked.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a ratcheting mechanism is used to secure the bicycle, then the bicycle can be held in place and secured to the rack, but the mechanism can be easily disengaged by unauthorized persons allowing theft
Solution Approach 1:
The release mechanism is segmented into two separate components: a release lever for disengagement and a locking lever with bolt for security. This segmentation allows the ratcheting mechanism to maintain its ease of operation while adding a separate security layer that prevents unauthorized disengagement.
Solution Approach 2:
A locking lever with an extendable bolt acts as an intermediary between the unauthorized person and the release lever. The bolt physically blocks the release lever from moving into the disengaged position, serving as a mediator that prevents theft while allowing authorized access when the bolt is retracted.
2Reliability
If a lock is added to prevent unauthorized disengagement, then security is improved, but the device complexity increases
Solution Approach 1:
The locking lever is merged with the release lever assembly, sharing common components such as the pivot point and mounting structure. This merging allows the security function to be added while minimizing the increase in overall device complexity by reusing existing structural elements.
Solution Approach 2:
The locking lever serves multiple functions: it acts as a security barrier when extended, and can be integrated with the release mechanism's existing pivot and mounting structures. This multi-functionality reduces the need for entirely separate components, thereby limiting the increase in device complexity.
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 locking release lever effectively prevents the ratcheting mechanism from being disengaged, thereby securing the bicycle to the rack and preventing theft by requiring a deliberate action to unlock and release the bike.
Implementation Method 1
a lock at least one of connected with or integral with the second end of the swing lever, the lock including a bolt, the lock configured for being locked when the swing lever is in the first position, the bolt of the locked lock extending from the lock and preventing the swing lever from moving into the second position
Data Source
AI summary
A locking release lever for engaging or disengaging a bicycle rack ratcheting mechanism. The ratcheting mechanism for securing a bicycle on a bike rack when engaged and for freeing the bicycle when disengaged. A locking release lever includes (1) an anchor fixedly secured to the ratcheting mechanism (2) a swing lever with first and second ends, the first end connected or integral with the anchor, the swing lever for swinging between a first position for engaging the ratcheting mechanism and a second position for disengaging the ratcheting mechanism, and (3) a lock connected or integral with the second end of the swing lever, the lock including a bolt for being engaged when the swing lever is in the first position, the engaged bolt extending from the lock and preventing the swing lever from disengaging the ratcheting mechanism.