Cabin Separating Element Push Rod Mechanism

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Solution Overview

Problem

Existing cabin separating elements for aircraft and similar vehicles face limitations due to their weight, rigidity, manufacturing complexity, and restricted opening travel, particularly in narrow fuselages, which affects the width of the passage and the compactness of the movement mechanism.

Innovation Solution

A cabin separating element with a mechanism comprising movement push rods articulated in a parallelogram configuration, allowing for optimized weight distribution, increased rigidity, simplified manufacturing, and enhanced movement compactness, along with a locking system for secure positioning in both open and closed states.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Area of stationary object

If a single large leaf is used in the separating element, then the passage width can be maximized, but the weight and manufacturing cost increase significantly

Engineering Contradiction:
Improvepassage widthVSAvoidleaf weight
Core Design Contradiction:
Area of stationary objectVSWeight of moving object

Solution Approach 1:

The single large leaf is divided into multiple smaller leaves (first leaf and second leaf) that can move independently. Each leaf has its own movement mechanism, allowing the passage width to be maintained while reducing the weight of individual moving components and enabling more efficient manufacturing.

Inventive Principle:
Principle #1Segmentation

2Adaptability or versatility

If the leaf travel is limited by the fuselage geometry, then the separating element can be installed in narrow fuselages, but the passage width is restricted

Engineering Contradiction:
Improveadaptability to narrow fuselageVSAvoidpassage width
Core Design Contradiction:
Adaptability or versatilityVSArea of stationary object

Solution Approach 1:

The movement mechanisms of the leaves are designed to be dynamic and adaptable. The push rod mechanisms allow the leaves to move through optimized trajectories that maximize passage width while accommodating the constraints of narrow fuselage geometry, enabling the system to adapt to different fuselage sizes.

Inventive Principle:
Principle #15Dynamics

3Device complexity

If traditional slide means are used for leaf movement, then the mechanism is simple, but the weight and complexity increase

Engineering Contradiction:
Improvemovement mechanism complexityVSAvoidmovement means weight
Core Design Contradiction:
Device complexityVSWeight of moving object

Solution Approach 1:

The invention extracts and replaces the traditional slide means with a push rod mechanism. This new mechanism uses articulated rods connected to the leaves and stationary partitions, reducing the weight of moving components while maintaining functional simplicity and reducing overall system complexity.

Inventive Principle:
Principle #2Taking out (Extraction)

4Volume of moving object

If the movement means are made compact, then the separating element can be installed in narrow spaces, but the rigidity and stability may be compromised

Engineering Contradiction:
Improvemovement means volumeVSAvoidseparating element rigidity
Core Design Contradiction:
Volume of moving objectVSStrength

Solution Approach 1:

The movement mechanism employs a composite structure combining rigid push rods with articulated joints. This configuration provides both compactness and rigidity, as the articulated connections allow for compact packaging while the rigid push rod members maintain structural stability during operation.

Inventive Principle:
Principle #40Composite materials

Data Source

PatentUS9260175B2Separating element for a platform cabin comprising a push rod mechanism for moving a leaf
Publication Date: 2016.02.16 DASSAULT AVIATION SA
  • US9260175B2 patent drawing
  • US9260175B2 patent drawing
  • US9260175B2 patent drawing

AI summary

A separating element for a platform cabin is provided. The separating element comprises: at least one stationary partition, delimiting a passage defining a circulation axis inside the cabin; at least one leaf, mounted transversely movable relative to the circulation axis between a closed position, in which it extends through the passage, and an open position, in which it is positioned at least partially spaced away from the passage; and means for moving the or each leaf between the closed position and the open position thereof, the or each leaf being adapted to move along the plane transverse to the circulation axis.