Rope Take-Up Device With Toggle Mechanism For Single-Handed Tightening
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Solution Overview
Problem
The existing methods for tightening strings, such as shoelaces, require the use of both hands and are cumbersome.
Innovation Solution
A string collecting device with a rotating part and a string winding part that engages movable parts in synchronous rotation, allowing the string to be tightened with a single hand by rotating the device in the string collecting direction, utilizing a toggle structure to engage and disengage the movable parts with the string winding part.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If traditional two-handed string tightening method is used, then the string can be tightened effectively, but the operation becomes cumbersome and time-consuming
Solution Approach 1:
The patent employs dynamic engagement between the movable part and string winding part through a toggle mechanism. The movable part can dynamically transition between engaged and disengaged states, allowing automatic synchronization during rotation. This dynamic system enables single-handed operation by automatically coordinating the movement of multiple components without requiring manual intervention from both hands.
Solution Approach 2:
The toggle mechanism with movable part enables the system to self-regulate and self-synchronize during operation. When the rotating part turns, the movable part automatically engages with the string winding part through the toggle structure, causing all components to rotate synchronously without external coordination. This self-service mechanism eliminates the need for two-handed operation and reduces operational time.
2Device complexity
If a simple rotating mechanism is used, then the device structure remains simple, but synchronous rotation of multiple parts cannot be achieved
Solution Approach 1:
The movable part acts as an intermediary element between the rotating part and the string winding part. Through the toggle mechanism, this intermediary component transfers and coordinates rotational motion, ensuring synchronous rotation of all parts. The movable part mediates the interaction between components, maintaining reliability of synchronous operation while adding only minimal structural complexity.
Solution Approach 2:
The patent uses a dynamic toggle mechanism that automatically engages and disengages the movable part based on rotational direction. This dynamic system provides reliable synchronous rotation only when needed (during tightening), while maintaining simplicity during loosening operations. The conditional engagement ensures reliability without permanently increasing device complexity.
Data Source
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AI summary
A string collecting device and an article having a string are provided, wherein the string collecting device includes a rotating part (1) and a string winding part (2) configured to wind a string; the rotating part (1) is provided with at least one movable part (3) that is capable of moving; the movable part (3) is configured to be engaged with the string winding part (2) when the rotating part (1) is rotated towards a string collecting direction, and wherein when the at least one movable part (3) is engaged with the string winding part (2), the three, namely, the rotating part (1), the at least one movable part (3) and the string winding part (2), are connected in synchronous rotation. This string collecting device is simple in structure and easy in operation, wherein when a user needs to tighten the string, the operation can be completed just by rotating the rotating part with a single hand towards the string collecting direction.