Elastic Switchable Scissors With Retractable Blade Positioning
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Solution Overview
Problem
Current scissors for unpacking boxes require complex assembly and high production costs due to integrated structures, and they pose safety hazards during use as only one blade is used for cutting, exposing the other blade and increasing the risk of hand injuries.
Innovation Solution
Elastic switchable scissors with a connecting pin allowing the first scissor blade to pivot relative to the second scissor blade, featuring an elastic switchable member that enables the first scissor blade to move between extended and retracted positions, facilitating easy assembly and replacement of components without the need for simultaneous replacement of the first scissor blade.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If an integrated structure formed by injection molding is used, then the scissors can be manufactured as a single piece, but the assembly becomes complicated and production costs significantly increase
Solution Approach 1:
The scissors are divided into separate components: a blade assembly containing the first scissor blade and connecting pin, and a handle assembly containing the second scissor blade and handle. These separate assemblies are then connected through the connecting pin that passes through both blades and handles, allowing for simpler manufacturing of individual parts while maintaining functional integration.
2Device complexity
If only one scissor blade is used for cutting, then the structure is simplified, but safety hazards increase as the other blade is exposed during operation
Solution Approach 1:
The connecting pin is designed to be movable within the moving hole of the first scissor blade, allowing the blade assembly to dynamically switch between extended and retracted positions. This dynamic mechanism enables the user to control the exposure of blades during operation, reducing safety hazards while maintaining cutting functionality.
3Ease of manufacture
If the first scissor blade and rubber component are integrated, then manufacturing is simplified, but simultaneous replacement of both components is required due to wear, reducing product competitiveness
Solution Approach 1:
The connecting pin is separated from the rubber component, with the connecting pin serving as a reusable mechanical connector and the rubber component serving as a replaceable elastic element. This segmentation allows the rubber component to be replaced independently when worn, without requiring replacement of the connecting pin or other components.
Solution Approach 2:
The rubber component is designed as a consumable part that can be replaced when worn, while the connecting pin and other structural components are recovered and reused. This approach reduces overall manufacturing costs and improves product competitiveness by allowing selective replacement of only the worn component.
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 elastic switchable scissors provide a simple, flexible, and safe cutting mechanism with reduced production costs, allowing for easy assembly and component replacement, enhancing user safety by preventing hand injuries during use.
Implementation Method 1
the elastic part of the elastic switchable member is extended into a projection area of the moving hole and is retractable to block or release the movement of the connecting pin within the moving hole
Data Source
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AI summary
Elastic switchable scissors for unpacking includes a connecting pin, and a first scissor blade and a second scissor blade. The first scissor blade is provided with a moving hole, and the connecting pin passes through the moving hole and is fixedly connected to the second scissor blade, thereby allowing the first scissor blade to pivot around the connecting pin. An elastic switchable member is positioned in the receiving groove of the first scissor blade, and clamped between the first and second scissor blades, and the elastic part of the elastic switchable member is extended into a projection area of the moving hole and is retractable to block or release the movement of the connecting pin within the moving hole. The scissors have simple structure, easy assembly, and low production cost.