Motorcycle Tank Bag Quick-Release Latch Synchronization
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Solution Overview
Problem
Existing quick-release devices for motorcycle tank bags suffer from poor lock synchronization, inefficient drive structures, and defects in sliding adjustment, leading to laborious operations and unstable locking.
Innovation Solution
A quick-release device with a synchronization gear mechanism that ensures synchronous movement of latch plates, a simplified drive structure using an operating component and return springs, and a positioning assembly for smooth sliding adjustment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If independent drive of symmetrical latch plates is used, then the structure is simple, but lock synchronization is poor
Solution Approach 1:
The patent merges the independent drive mechanisms of the two latch plates into a single synchronized drive system. The first and second latch plates are both driven by the same operating component through a common drive structure, ensuring they move simultaneously and maintain consistent positioning during retraction and extension operations, thereby resolving the synchronization issue while maintaining structural simplicity.
2Device complexity
If pull strap or rigid pushing element is used, then the drive structure is simple, but operation is laborious and unreliable
Solution Approach 1:
The patent introduces a rotating operating component that converts rotational motion into linear motion for driving the latch plates. This dynamic mechanism provides smoother operation compared to static pull straps or rigid pushers, reducing the force required and improving operational ease while maintaining drive structure simplicity through the rotational actuation mechanism.
3Device complexity
If frictional fixation between elastic element and mating groove is used, then the sliding adjustment structure is simple, but sliding is unsmooth and adjustment is difficult
Solution Approach 1:
The patent replaces the friction-based elastic element fixation mechanism with a gear-rack mechanical engagement system. The gear engages with the rack on the sliding component, providing positive mechanical engagement that eliminates sliding resistance and enables smooth, precise adjustment while maintaining the simplicity of the overall sliding adjustment structure.
4Ease of manufacture
If gap between fastening head and fastening hole exists, then the structure tolerates machining variations, but locking stability is poor
Solution Approach 1:
The patent incorporates a feedback mechanism where the operating component's rotation is directly linked to the position of the fastening head through the gear-rack system. This provides positional feedback that ensures the fastening head reaches the precise engagement position with the fastening hole, eliminating gaps caused by machining tolerances while maintaining manufacturing feasibility through standard gear and rack components.
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
Enhances operational efficiency, reduces labor intensity, and improves locking stability and user experience by ensuring synchronized movement and smooth sliding.
Implementation Method 1
the latch plate's return to the initial position is driven by the elastic force of the first return spring
Implementation Method 2
A quick-release device with a synchronization gear mechanism that ensures synchronous movement of latch plates
Data Source
AI summary
A quick-release device for motorcycle tank bags includes a quick-release main body including a housing and a latch assembly, a base plate and a tank cap mounting unit. The tank cap mounting unit is embedded in a bottom groove of the housing. A side of the groove is provided with multiple through holes. An active latch plate and a driven latch plate are configured to engage with a synchronization gear via racks. Dual latch plates are configured to move synchronously in opposite directions through an external actuating lever. The actuating lever is pressed to drive a rotation shaft and an internal pivot arm to retract the fastening heads, thereby achieving the unlocking. After releasing the actuating lever, the latch plates are reset via a first return spring, and the fastening heads pass through the through holes to engage with the fastening hole, thereby achieving the locking.