Cutting Tool Gear Engagement for Large and Small Objects
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Solution Overview
Problem
Existing cutting tools with gears are not well suited for cutting both large and small objects efficiently, as the gear provides unnecessary complexity and additional force when cutting small objects.
Innovation Solution
A cutting tool with an actuator that allows the user to selectively engage or disengage the gear mechanism, enabling efficient cutting of both large and small objects by choosing the appropriate gear usage based on the object size.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If a gear mechanism is added to increase cutting force, then the cutting force is improved for large objects, but the device complexity increases and it becomes less suitable for small objects
Solution Approach 1:
The cutting tool implements a dynamic gear mechanism where the second gear section can be selectively engaged or disengaged from the second handle through an actuator. This allows the gear system to transition between locked (engaged) and unlocked (disengaged) states, enabling the user to adapt the mechanical advantage to the cutting task at hand.
Solution Approach 2:
The cutting tool achieves multi-functionality by allowing the same tool to operate in two distinct modes: with gear engagement for high-force cutting of large objects, and with gear disengagement for smooth, low-force cutting of small objects. The actuator enables rapid switching between these modes, making the tool universally applicable to various cutting scenarios.
2Force
If a gear mechanism is always engaged, then cutting force is increased for large objects, but the ease of operation deteriorates for small objects
Solution Approach 1:
The actuator enables dynamic control of the gear engagement state, allowing the user to switch between locked and unlocked conditions based on the cutting requirements. This dynamic adjustment optimizes both cutting force and operational smoothness for different object sizes.
Solution Approach 2:
The system changes the mechanical parameter of gear engagement status (engaged vs. disengaged) to adapt to different cutting scenarios. By altering this parameter, the tool can provide high force when needed or operate smoothly for delicate tasks.
Data Source
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AI summary
The invention relates to a cutting tool (1), comprising a jaw (2) with a first jaw member (3) and a second jaw member (4) pivotably connected to each other at a first pivot point (5). A first handle (6) has a first end (8) attached to the first jaw member (3) and a first gear section (9) extends from the first handle (6) towards a second handle (7). The second handle (7) is rotatably connected to the second jaw member (4). To obtain a cutting tool which is well suited for efficient cutting of both large and small objects, a second gear section (11) is provided between the second handle (7) to engage the first gear section (9). The second handle (7) is provided with an actuator (12) which in a first position locks the second gear section (11) to rotate with the second handle (7) and forces the second gear section (11) to rotate along the first gear section (9) to change a distance between the first (6) and second handle (7) when the second handle (7) is rotated, and which in a second position releases the second gear section (11) from the second handle (7), so that mutual rotation between the the second gear section (11) and the second handle (7) is possible.