Powered Door Mechanism for Laser Engraver Safety
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Solution Overview
Problem
Automatic doors for laser engraving device enclosures are overly complex and require sophisticated safety mechanisms to prevent crushing obstacles, such as human limbs, during closure.
Innovation Solution
A powered door closing mechanism that automatically separates from obstacles during closure, preventing force exertion on encountered objects by disengaging from the door guide bracket when an obstruction is detected.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If sophisticated safety mechanisms are added to prevent crushing obstacles, then safety is improved, but device complexity increases
Solution Approach 1:
The patent extracts the safety function from complex sensor-based systems and implements it through a simple mechanical separation mechanism. The actuator rod is designed to disengage from the door guide bracket when resistance is encountered, automatically removing the force application capability while maintaining closure functionality.
Solution Approach 2:
The door guide bracket acts as an intermediary element between the actuator rod and the door. It transmits the closing force normally but allows automatic separation when obstacle resistance exceeds a threshold, providing passive safety without complex control systems.
2Reliability
If the door is designed to automatically separate from obstacles, then safety is improved, but the door closing mechanism complexity increases
Solution Approach 1:
The connection between the actuator rod and door guide bracket is designed to be dynamically changeable - engaged during normal operation and automatically disengaged when resistance is encountered. This dynamic characteristic provides safety while maintaining simplicity through passive mechanical response.
Solution Approach 2:
The system changes the engagement parameter of the actuator rod with the door guide bracket based on the resistance encountered. Under normal conditions, the parameters indicate engaged state; when obstacle resistance exceeds threshold, the parameters automatically transition to disengaged state, providing safety without complex control.
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
Prevents damage to objects and individuals by ensuring the door does not exert force on obstacles, allowing safe operation and maintenance of the laser engraving device.
Implementation Method 1
The cylinder 34 may be operated pneumatically or hydraulically
Implementation Method 2
A door housing attachment bracket 30 is bolted onto the automatic door 14 near the top
Data Source
AI summary
A powered mechanism to open and close a door to a housing for a laser engraving device, with an arrangement that allows the powered mechanism to separate from the door so that the powered mechanism does not exert any force on any obstacle that the door may encounter when closing.