Hinged Door Arrangement With Radial Catches to Reduce Contamination

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Solution Overview

Problem

Existing door arrangements for connecting enclosed spaces generate contamination through friction and turbulence during rotational movements, leading to potential contamination and sealing breaches.

Innovation Solution

A door arrangement with a flange and hinged door using a double-jointed link mechanism and locking catches driven by micromotors, allowing secure connection without rotational movement, reducing friction and turbulence.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a bayonet system with rotational movement is used to connect flanges and doors, then the connection is secure and reliable, but friction and particles are generated causing contamination and sealing breaches

Engineering Contradiction:

Improveconnection reliabilityVSAvoidcontamination and particles

Core Design Contradiction:

ReliabilityVSObject-generated harmful factors

Solution Approach 1:

The invention extracts and eliminates the rotational movement mechanism from the connection system. Instead of using a bayonet system that requires rotation, the patent employs a linear connection mechanism where the door translates directly into the flange along the passage axis, removing the source of friction and particle generation while maintaining secure connection

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The invention replaces the mechanical rotational bayonet system with a linear translational mechanism. The door moves linearly along the passage axis rather than rotating, substituting a harmful mechanical action (rotation with friction) with a cleaner alternative (linear movement without friction) that achieves the same connection function

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

2Reliability

If rotational movement is used to lock flanges and doors together, then secure locking is achieved, but turbulence is generated during door opening causing contamination risks

Engineering Contradiction:

Improvelocking reliabilityVSAvoidturbulence and contamination

Core Design Contradiction:

ReliabilityVSObject-generated harmful factors

Solution Approach 1:

The invention removes the rotational component from the locking mechanism. The door locks to the flange through linear translation along the passage axis, extracting the rotational movement that causes turbulence during door opening, thereby eliminating contamination risks while maintaining secure locking

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

Instead of rotating the door to achieve locking and opening, the invention inverts the approach by translating the door linearly along the passage axis. This reversal of the movement direction (from rotational to linear) eliminates turbulence generation while achieving the same locking and opening functions

Inventive Principle:

Principle #13The other way round (Inversion)

Data Source

PatentUS20250332584A1Door arrangement fitted to a first enclosed space for reducing contamination risks when a second enclosed space is connected to the first enclosed space

Publication Date: 2025.10.30 ABC TRANSFER

AI summary

The invention relates to a door arrangement (1) for a first enclosed space enabling a sealed connection between the first enclosed space and a second enclosed space, comprising a flange (2) defining an opening into the first enclosed space, a door (4) hingedly mounted on the flange (2), means for securing the flange of the second space pressed against the flange of the first space, the means comprising locking catches (8) which are movable between an unlocked position in which they are recessed inside the flange (2) and a locked position in which they project radially from the flange (2) to the opening, thereby locking the flange of the second space without rotating the flange (2) by engaging each catch in a notch provided on the outer peripheral edge of the flange of the second space.