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

VSEngineering 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

Engineering Contradiction:
Improveblade depth adjustabilityVSAvoidblade depth adjustment mechanism
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

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.

Inventive Principle:
Principle #15Dynamics

2Ease of operation

If a permanent blade cover is used, then the blade is secure, but blade replacement and reorientation are difficult

Engineering Contradiction:
Improveblade replacement convenienceVSAvoidblade cover structure
Core Design Contradiction:
Ease of operationVSDevice complexity

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.

Inventive Principle:
Principle #1Segmentation

3Ease of operation

If the blade is always extended, then cutting is convenient, but user safety is compromised

Engineering Contradiction:
Improvecutting accessibilityVSAvoiduser safety risk
Core Design Contradiction:
Ease of operationVSObject-affected harmful factors

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.

Inventive Principle:
Principle #15Dynamics

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

Engineering Contradiction:
Improveambidextrous compatibilityVSAvoidblade carriage configuration
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

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.

Inventive Principle:
Principle #15Dynamics

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

Methodology Applied
Scientific EffectElasticity: Elasticity

Data Source

PatentUS20230373112A1Adjustable blade depth pen cutter
Publication Date: 2023.11.23 SLICE SAFETY CUTTER INC
  • US20230373112A1 patent drawing
  • US20230373112A1 patent drawing
  • US20230373112A1 patent drawing

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.