Manual Cutting Tool Transparent Flexible Protective Shield
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Solution Overview
Problem
Manual cutting tools, such as electrician's pliers, pose risks to users due to the projection of cut-out parts, which can cause eye injury and environmental pollution, as existing designs do not adequately protect the user during cutting operations.
Innovation Solution
A manual cutting tool with two articulated branches featuring a transparent, flexible protective member made of materials like polycarbonate that covers the cutting section, allowing user visibility and elastic deformation to accommodate long or bulky cut-outs, preventing part projection and enhancing user safety.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a protective device is added to cover the cutting section, then user safety is improved, but device complexity increases
Solution Approach 1:
The patent applies a flexible protective sheet made of transparent material that covers the cutting section. This thin film structure provides protection while maintaining visibility and flexibility, resolving the contradiction between safety and device complexity by using a simple, adaptable protective layer rather than a rigid complex structure
Solution Approach 2:
The transparent protective sheet acts as an intermediary element between the user and the cutting operation. It mediates by providing physical protection against projected cut parts while allowing visual observation of the cutting process, thus improving safety without significantly complicating the device
2Reliability
If a rigid guide is used to cover the cutting section, then user safety is improved, but visibility is worsened
Solution Approach 1:
The patent uses a flexible transparent sheet instead of a rigid guide, allowing light to pass through while providing protection. This resolves the contradiction by maintaining visibility (unlike rigid guides) while still covering the cutting section to protect the user
Solution Approach 2:
The transparent material of the protective sheet allows optical transmission, effectively changing the visual properties of the protective barrier from opaque (rigid guides) to transparent, thus maintaining visibility while providing safety
3Reliability
If a fixed protective cover is used, then user safety is improved, but ease of operation is worsened when cutting long or bulky portions
Solution Approach 1:
The patent employs a flexible protective sheet that can dynamically adapt its shape during cutting operations. When long or bulky portions are cut, the sheet can deform to accommodate the material, maintaining both safety and ease of operation unlike fixed rigid covers
Solution Approach 2:
The flexibility of the protective sheet allows it to conform to different cutting scenarios, including long or bulky portions. This resolves the contradiction by providing protection without restricting the user's ability to maneuver the tool during various cutting operations
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 solution effectively prevents the projection of cut-out parts, ensuring user safety by providing clear visibility and flexibility during cutting operations, reducing the risk of injury and pollution.
Implementation Method 1
A transparent material is defined as a material through which a user can see the element to be cut
Implementation Method 2
flexibility in the plane perpendicular to the cutting section allows the component to avoid hindering the cutting process when the portion to be removed is long or bulky. Indeed, this portion to be cut and removed is designed to bear against the component and cause it to flex
Data Source
Figure 1~4
Figure 5~9
AI summary
The invention relates to a manual cutting tool (110), comprising two arms (112) hinged about an axis (X), each arm comprising a first portion (114) to enable said tool to be grasped by a user and a second cutting portion (116), said first and second portions being separated from one another by said axis, the second portions of the arms comprising cutting edges (118) that define a cross-sectional area (A) of an element to be cut, the tool being configured such that a hinge on the arms about said axis brings the cutting edges of the arms together and cuts said element. The invention is characterized in that it further comprises a member (130) for protecting the user, which is made of a transparent material, said member extending substantially in parallel with said cross-sectional area and covering same completely, and being flexible in a plane substantially perpendicular to said cross-sectional area.