Oscillating Self-Centering Traffic Door with Sealed Beam

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Solution Overview

Problem

Traditional traffic doors face issues with dust and dirt accumulation, mechanical damage, and increased costs due to exposed moving parts and additional hardware, which lead to friction, failure, and vulnerability to forklifts and crates.

Innovation Solution

An oscillating self-centering traffic door design featuring a beam with a rotatable oscillator and support pin, allowing 270-degree rotation, and sealed channels to prevent dust and odor entry, with the beam supported by a floor plate rather than a doorjamb, reducing exposure to mechanical damage.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the traffic door is hung from the top of the doorjamb with exposed moving parts, then the door can be supported and operated, but dust and dirt accumulate on the moving parts causing friction and eventual failure

Engineering Contradiction:

Improvedoor operation reliabilityVSAvoiddust and dirt accumulation

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The oscillator mechanism is nested within the door structure, with the oscillating beam positioned inside the door frame. This nesting protects the moving parts from external contamination while maintaining the self-centering function, resolving the contradiction between operational reliability and susceptibility to dust accumulation.

Inventive Principle:

Principle #7Nested doll (Nesting)

Solution Approach 2:

A dust cover or protective shielding is introduced to enclose the oscillator mechanism. This flexible or rigid cover acts as a barrier against dust and dirt while allowing the oscillating beam to move freely within the protected space, eliminating the harmful effect of contamination on moving parts.

Inventive Principle:

Principle #30Flexible shells and thin films

2Ease of operation

If the traffic door uses traditional hinges and doorjamb mounting, then the door can swing open and closed, but the exposed moving parts are vulnerable to mechanical damage from forklifts and crates

Engineering Contradiction:

Improvedoor swinging capabilityVSAvoidmechanical impact damage

Core Design Contradiction:

Ease of operationVSObject-affected harmful factors

Solution Approach 1:

Inventive Principle:

Principle #7Nested doll (Nesting)

Solution Approach 2:

Inventive Principle:

Principle #30Flexible shells and thin films

3Adaptability or versatility

If dual hinged doors are used to enable bi-directional swinging, then the door can swing in both directions, but additional hardware increases cost and complexity

Engineering Contradiction:

Improvebi-directional door movementVSAvoidnumber of hinges and hardware

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The oscillating beam combines the functions of multiple hinges into a single integrated mechanism. The beam's oscillation capability enables bi-directional door movement while eliminating the need for separate hinge assemblies, thus reducing hardware complexity and cost while maintaining versatility.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The oscillating beam serves multiple functions simultaneously: it acts as the pivot point for door movement, provides self-centering action, and enables bi-directional swinging. This multi-functionality eliminates the need for additional specialized hardware, reducing overall system complexity.

Inventive Principle:

Principle #6Universality (Multi-functionality)

4Weight of stationary object

If the traffic door hangs off the doorjamb, then the door can be supported, but the doorjamb becomes damaged by the traffic door's weight and movement

Engineering Contradiction:

Improvedoor support capabilityVSAvoiddoorjamb structural integrity

Core Design Contradiction:

Weight of stationary objectVSStrength

Solution Approach 1:

The support mechanism is transitioned from a vertical doorjamb mounting to a horizontal floor plate mounting. This dimensional change distributes the door's weight and movement forces across a larger area of the floor structure, reducing point loads on the doorjamb and preventing structural damage.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

Solution Approach 2:

Instead of mounting directly to the doorjamb, the system uses a floor plate that replicates the support function at a different location. The floor plate serves as a substitute mounting surface that better handles the mechanical loads, preserving doorjamb integrity while maintaining door support capability.

Inventive Principle:

Principle #26Copying

Data Source

PatentUS8112939B2Oscillating self-centering traffic-door

Publication Date: 2012.02.14 MILLER PETER

AI summary

A door that has a beam and door panel that are secured by molding the door panel to the beam.