Cutter Assembly Dual Locking Mechanism
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Solution Overview
Problem
Conventional cutter assemblies with automatic locking devices lack sufficient engaging force for cutting thick objects, while screw locking devices are inconvenient due to the need for repeated unlocking and relocking when adjusting blade extension length.
Innovation Solution
A cutter assembly incorporating both automatic and screw locking devices, featuring a guiding channel with engaging teeth, a resilient automatic locking mechanism, and a screw locking mechanism with a locking bolt and nut, allowing for dual locking effects and adjustable blade extension.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If an automatic locking device is used, then the ease of operation is improved, but the locking force is insufficient for cutting thick objects
Solution Approach 1:
The patent combines two different locking mechanisms (automatic locking device with engaging block and spring, and screw locking device with locking bolt) into a single cutter assembly. The automatic locking device provides convenient operation for thin objects, while the screw locking device provides sufficient locking force for thick objects. Both devices work together in the same assembly to resolve the contradiction between ease of operation and locking force.
2Force
If a screw locking device is used, then the locking force is sufficient for cutting thick objects, but the ease of operation deteriorates due to repeated unlocking and relocking
Solution Approach 1:
The patent merges the advantages of both automatic and screw locking devices into one assembly. The automatic locking device enables quick operation without repeated unlocking/relocking, while the screw locking device ensures sufficient locking force. This combination resolves the contradiction by allowing the user to choose the appropriate locking mode based on the cutting task.
Solution Approach 2:
The patent makes the locking mechanism dynamic by allowing switching between two different locking modes (automatic and screw locking) depending on the application requirements. The system can adapt its locking characteristics based on whether thin or thick objects are being cut, rather than being fixed to a single locking mode.
3Ease of operation
If only an automatic locking device is used, then the ease of operation is improved, but the adaptability deteriorates for cutting thick objects
Solution Approach 1:
The patent makes the cutter assembly universal by equipping it with two different locking devices that can handle different cutting scenarios. The automatic locking device suits thin objects requiring quick operation, while the screw locking device suits thick objects requiring strong locking force. This multi-functionality resolves the contradiction between ease of operation and adaptability.
4Force
If only a screw locking device is used, then the locking force is improved, but the device complexity increases due to additional components
Solution Approach 1:
The patent segments the locking function into two independent subsystems (automatic locking device and screw locking device) that can operate independently. Each subsystem is relatively simple in structure, and together they provide the required locking force without requiring a single overly complex locking mechanism. This segmentation resolves the contradiction between locking force and device 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 convenient and versatile use by providing sufficient locking force for cutting both thin and thick objects, with automatic locking for ease of use and screw locking for secure positioning.
Implementation Method 1
The automatic locking device is mounted on the lower sliding member of the slider and has a resilient member selectively engaging at least one of the engaging teeth
Implementation Method 2
When the bolt is rotated to make the bolt abut against an inner surface of the blade holder, the slider can be positioned relative to the blade holder
Data Source
AI summary
A cutter assembly has a blade holder, a slider, an automatic locking device, a screw locking device and a blade. The blade holder has a guiding channel defined in the blade holder and having two inner edges. Multiple engaging teeth are arranged in a line along at least one of the inner edges. The slider is mounted slidably on the blade holder relative to the guiding channel. The automatic locking device is mounted on the slider and has a resilient member selectively engaging at least one of the engaging teeth. The screw locking device is mounted on the slider and has a relative travel distance between the screw locking device and the slider. The blade is mounted slidably in the blade holder and connected to the slider.