Adjustable Blade Depth Pen Cutter with Movable Carriage
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Solution Overview
Problem
Existing pen cutters lack a blade carriage configuration for easy blade replacement or reorientation, a blade depth indicator, and a blade cover with a removable cap for convenient access and adjustment.
Innovation Solution
A cutting device with a movable blade carriage, adjustable blade depth, and a removable blade cover, featuring a tension component for automatic retraction and an adjustment dial for precise blade exposure, allowing for ambidextrous use and secure blade retention.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a fixed blade depth mechanism is used, then the structure is simple, but the blade depth cannot be adjusted for different cutting requirements
Solution Approach 1:
The blade depth is made adjustable through a movable carriage system that can be repositioned along the blade, allowing the blade to extend to different depths. This dynamic adjustment capability enables the same device to adapt to various cutting requirements without requiring multiple devices or complex reconfiguration processes.
2Ease of operation
If a permanent blade cover is used, then the blade is secure, but blade replacement and reorientation are difficult
Solution Approach 1:
The blade cover is designed as a removable component that can be easily detached from the housing, separating the protective function from the blade retention function. This segmentation allows users to quickly remove the cover for blade replacement or reorientation while maintaining secure blade retention when the cover is attached, without requiring complex disassembly procedures.
3Ease of operation
If the blade is always extended, then cutting is convenient, but user safety is compromised
Solution Approach 1:
The blade carriage incorporates a spring mechanism that automatically returns the blade to a retracted position after cutting use. This dynamic system allows the blade to be extended only when needed for cutting operations, while automatically retracting to a safe position when not in use, thus maintaining both cutting convenience and user safety without requiring manual intervention.
4Adaptability or versatility
If a fixed blade orientation is used, then the structure is simple, but the device is not compatible with both left-handed and right-handed users
Solution Approach 1:
The blade carriage is designed with movable components that allow the blade orientation to be changed by repositioning the carriage along the blade or rotating the blade within the carriage. This dynamic reconfiguration capability enables the same device to be adapted for different user preferences (left-handed or right-handed) without requiring multiple devices or complex manufacturing processes, maintaining versatility while managing structural complexity.
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
Enables easy blade adjustment, secure blade retention, and automatic retraction for user safety, enhancing usability and compatibility for both left- and right-handed users.
Implementation Method 1
a tension component (107), such that when the slider switch is released (e.g. disengaged), the blade may automatically spring back into the housing
Data Source
AI summary
A cutting device has a selectively replaceable and reorientable blade. The cutting device includes a housing and a carriage that is movably disposed in the housing, the carriage being movable between a retracted position and an extended position. The cutting device also has a cutting member that is removably disposable and reorientable in the carriage and a cover member that is removably attachable to the housing. Further, the cutting device may include an adjustable blade depth assembly providing the ability to direct and/or pre-select the depth or length a blade disposed in the blade carriage will reach upon engagement of a dial component and/or switch member operably connected to the blade carriage.


