Self-Closing Sack With Elastic Bars And Locking Structures
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Solution Overview
Problem
The handling of varied items in electronic commerce logistics often requires flexible and efficient sack solutions that can accommodate different sizes and shapes, but existing sacks lack self-closing mechanisms, leading to manual labor inefficiencies and potential human error in opening and closing processes.
Innovation Solution
A self-closing sack with a flexible body and separable lips that utilize elastic bars and locking structures, such as hook-and-loop fasteners or magnets, to automatically open and close, reducing the need for manual intervention and enhancing handling efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If manual opening and closing of sacks is used, then flexibility in handling is maintained, but labor efficiency decreases and human error increases
Solution Approach 1:
The sack incorporates a self-closing mechanism with elastic bars and locking structures (such as hook-and-loop fasteners or magnets) that automatically close the mouth opening without requiring manual intervention. The elastic bars provide the force to bring lips together, while the locking structures secure the closed state, enabling the sack to service itself and eliminating the need for manual opening and closing operations.
Solution Approach 2:
The sack mouth opening mechanism transitions from a static closed state to a dynamic system that can automatically open and close. The elastic bars are designed to be flexible and dynamically adjust their position, allowing the mouth to open when items are inserted and automatically close when the separating force is removed, creating a dynamic response to handling operations.
2Extent of automation
If self-closing mechanism is added, then automation increases and productivity improves, but device complexity increases
Solution Approach 1:
The self-closing mechanism is applied locally only to the mouth opening area of the sack, rather than the entire sack structure. The elastic bars are positioned specifically at the lips, and the locking structures are placed only where needed for closing functionality. This localized application minimizes added complexity while achieving the desired automation at the critical opening/closing function.
Solution Approach 2:
The mechanism utilizes changes in the physical state of elastic bars (from bent to straight configurations) to provide closing force. The elastic bars can be deformed during opening operations and automatically return to their original state during closing, utilizing material elasticity parameters to create the self-closing function without complex mechanical systems.
3Reliability
If elastic bars and locking structures are used, then closing reliability improves, but manufacturing complexity increases
Solution Approach 1:
The closing mechanism is segmented into distinct functional components: elastic bars for providing closing force and locking structures (such as hook-and-loop fasteners or magnets) for securing the closed state. These segmented components can be manufactured separately and then assembled into the sack mouth opening, simplifying the overall manufacturing process while maintaining reliable closing functionality.
Solution Approach 2:
The locking structures such as hook-and-loop fasteners or magnetic elements are designed as simple, inexpensive components that can be easily manufactured and replaced. These disposable-like components provide reliable closing security through their inherent mechanical or magnetic properties without requiring complex assembly or high manufacturing precision, making them cost-effective for high-volume production.
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 self-closing sack significantly reduces human intervention in opening and closing, improving sorting process efficiency by up to 80% and minimizing errors, especially in high-volume sorting facilities.
Implementation Method 1
the closing structure includes at least one laterally bendable elastic bar, the bar of one lip configured to bow away from the other lip when the separating force is applied, and to straighten to bring the lips adjacent to one another when the separating force is removed
Data Source
AI summary
A sack includes a flexible sack body and a mouth that includes two separable lips that form a mouth opening when the lips are separated from one another, and that close the opening when the lips are adjacent to one another. Closing structure is configured to enable a separating force that is applied to the lips to separate the lips from one another to form the mouth opening, and to bring the lips adjacent to one another to close the mouth opening in the absence of the applied separating force.