Nested-Handle Cutting Tool for Compact Ergonomic Operation
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Solution Overview
Problem
Conventional cutting tools are bulky and ergonomically inconvenient, making them difficult for common users to handle and operate effectively.
Innovation Solution
A cutting tool design with a top and bottom blade, where the bottom handle encloses the back portion of the top handle, housing the drive unit components within the bottom handle to reduce size and enhance ergonomics, and featuring a switch for safe operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the drive unit components are arranged in a conventional layout, then the cutting tool can perform cutting operations, but the tool becomes bulky and ergonomically inconvenient
Solution Approach 1:
The patent applies nesting by placing the first handle inside the second handle, with the drive unit components (motor, gearbox, drum) housed within the cavity of the second handle. This nested arrangement allows the cutting tool to achieve a compact profile while accommodating all necessary components, directly resolving the contradiction between tool size and operational ease.
2Ease of operation
If the handle dimensions are reduced for better ergonomics, then the tool becomes easier to handle, but the drive unit components may not fit
Solution Approach 1:
The patent utilizes the longitudinal dimension of the second handle to accommodate the drive unit components (motor, gearbox, drum) in sequence along the handle's length. This dimensional arrangement allows compact transverse dimensions for ergonomics while providing sufficient volume along the longitudinal axis for all components, resolving the contradiction between handle size and component accommodation.
3Ease of operation
If the cutting tool is designed with conventional handle arrangement, then components are easily accessible, but the tool is difficult to maneuver in tight spaces
Solution Approach 1:
By nesting the first handle within the second handle, the patent achieves a compact profile that improves maneuverability in tight spaces. The drive unit components remain accessible through the open end of the second handle, and the blade assembly can be accessed by extending the handles apart, thus resolving the contradiction between maneuverability and component accessibility.
Data Source
AI summary
A cutting tool includes a top blade and a bottom blade. The bottom blade is pivotally coupled to the top blade. The top blade and the bottom blade together perform a cutting action on an object place between them. A first handle is operatively coupled with the top blade. The first handle defines a front portion and a back portion. A second handle is operatively coupled with the bottom blade. The cutting tool is characterized in that in closed position of the cutting tool, at least a part of the second handle at least partially encloses the back portion of the first handle.