Damped Self-Closing Safety Gate Hinge to Prevent Slamming
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Solution Overview
Problem
Existing safety gates that are self-closing often slam shut, posing hazards of pinching or slamming into individuals, and do not adequately address the need for damping the closing motion to prevent such incidents, especially in environments accessible to the general public.
Innovation Solution
A damped, self-closing safety gate mechanism that incorporates a hinge plate with a compressive fastener and a damper assembly, such as a viscous fluid damper, to control the closing speed and prevent slamming, while allowing for adjustable width and compliance with safety codes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a self-closing mechanism is made strong enough to ensure the gate closes reliably, then the gate can overcome windy conditions and install on non-plumb surfaces, but the gate accelerates throughout the closing arc and accumulates dangerous momentum before slamming shut
Solution Approach 1:
A damper assembly is integrated into the hinge mechanism to provide damping force during gate closure. The damper includes a piston moving within a cylinder containing viscous fluid, creating resistance that slows the gate as it approaches the closed position, preventing dangerous momentum buildup while maintaining reliable self-closing operation
Solution Approach 2:
The closing speed parameter of the gate is dynamically controlled through the damper mechanism. The damping force varies with closing speed, automatically reducing velocity as the gate nears closure without requiring manual intervention or complex control systems
2Force
If the self-closing power is increased to ensure the gate closes, then the gate can overcome resistance forces, but it creates undamped acceleration and dangerous momentum during closing
Solution Approach 1:
The damper assembly is positioned to provide progressive damping force as the gate closes, creating a cushioning effect that reduces closing speed in the final portion of the closing arc, preventing pinching hazards while maintaining adequate closing force to overcome resistance
Solution Approach 2:
The viscous fluid in the damper acts as an intermediary that mediates between the closing force and the gate motion, providing controlled resistance that smooths the closing action and eliminates dangerous acceleration
3Reliability
If a safety gate is installed to meet code requirements, then access to hazardous areas is restricted, but the gate may slam into or pinch persons using the ladder
Solution Approach 1:
The damper provides predetermined cushioning during gate closure, ensuring that even when the gate is used in safety-critical applications, the closing action remains controlled and safe for persons in the vicinity, eliminating pinching and slamming risks
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
The damped mechanism prevents pinching and slamming, enhances safety by allowing controlled closure, reduces noise and structural damage, and maintains compliance with safety codes by ensuring smooth operation and adjustable width.
Implementation Method 1
A damped, self-closing safety gate mechanism that incorporates a hinge plate with a compressive fastener and a damper assembly, such as a viscous fluid damper, to control the closing speed and prevent slamming
Data Source
AI summary
Self-closing safety gate embodiments are disclosed herein. The self-closing safety gates include a hinge plate configured to rotate about a vertical support member and engage a hoop portion. In some embodiments, the hinge plate includes at least one support arm portion with a channel. In such embodiments, the channel can be configured to receive and frictionally engage a hoop arm of the hoop portion with a compressive fastener. In some embodiments, the self-closing safety gate can be damped.