Ratchet Buckle Second Reel for Strap Retention
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Solution Overview
Problem
Existing ratchet buckles leave a free end of straps loosely hanging after tensioning, posing a nuisance and safety risk, as they require additional securing methods to prevent flapping during operation.
Innovation Solution
A ratchet buckle design featuring a second reel member and a crank or thumb knob that allows for secure wrapping and retention of excess strap portions without releasing tension, utilizing a latching mechanism to keep the strap taut.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a traditional ratchet buckle is used to tension a strap, then the strap is tightened effectively, but the free end of the strap hangs loosely and creates safety issues
Solution Approach 1:
The patent combines the tensioning function and the securing function into a single integrated device. The first reel member handles tensioning while the second reel member handles securing of the free end, eliminating the need for separate securing operations and improving safety without adding operational complexity
Solution Approach 2:
The ratchet buckle is designed with multi-functionality: the first reel member provides tensioning capability while the second reel member provides securing capability. This allows a single device to perform both tensioning and securing functions, resolving the contradiction between safety improvement and operational simplicity
2Reliability
If a second reel member is added to secure excess strap portions, then safety and usability are enhanced, but device complexity increases
Solution Approach 1:
The second reel member is nested within the frame structure of the first reel member. The crank or thumb knob mechanism is integrated into the existing lever assembly, allowing the securing function to be added without significantly increasing the overall device footprint or apparent complexity
Solution Approach 2:
The device is segmented into two independent but integrated reel members, each with its own locking mechanism. This segmentation allows the securing function to be added as a distinct module that operates independently from the tensioning function, making the complexity manageable and the device easier to understand and use
Data Source
AI summary
A ratchet bucket having a first reel member rotatably connected to a frame having an anchor end and a lever end and also having a pair of arms. A lever is rotatably connected to the frame at a first end of the lever. A second reel member and a thumb knob are rotatably connected to a second end of the lever.