Retractable Touchpad Interface for Vibration-Stable Cockpit Control

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Solution Overview

Problem

Ergonomic challenges in tactile control interfaces, particularly in environments subject to vibrations, such as aircraft cockpits, lead to difficulties in accurately positioning fingers on control surfaces due to tremors and space constraints, affecting the reliability and efficiency of operations.

Innovation Solution

A retractable touch interface with a touch pad and support, featuring an articulation mechanism allowing the pad to switch between deployed and retracted positions, along with a support surface for the user's hand, and electrically conductive tracks for precise finger detection, integrated into aircraft armrests for enhanced accessibility and usability.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Volume of moving object

If the touch interface is made retractable to save space, then the available space in the cockpit is reduced, but the accessibility and ergonomics during operation deteriorate

Engineering Contradiction:
Improvespace occupied by touch interfaceVSAvoidaccessibility of touch interface
Core Design Contradiction:
Volume of moving objectVSEase of operation

Solution Approach 1:

The touch interface is designed with a drawer mechanism that allows it to dynamically change position between retracted and extended states. The drawer can be easily pulled out to provide full accessibility during operation and retracted when not in use, resolving the contradiction between space saving and ease of operation through dynamic adaptability

Inventive Principle:
Principle #15Dynamics

2Stability of the object's composition

If the touchpad is made stationary to ensure stability, then the positioning stability is improved, but the adaptability to different operational states deteriorates

Engineering Contradiction:
Improvepositioning stability of touchpadVSAvoidadaptability to deployed and retracted states
Core Design Contradiction:
Stability of the object's compositionVSAdaptability or versatility

Solution Approach 1:

The touchpad is mounted on a drawer mechanism that provides stable positioning when extended for use, while allowing the entire assembly to be retracted when not needed. The hinge connection between touchpad and drawer ensures the touchpad maintains its orientation and stability during operation, while the drawer's movement capability provides the necessary adaptability between deployed and retracted states

Inventive Principle:
Principle #15Dynamics

3Device complexity

If the support surface is made fixed to simplify structure, then the device complexity is reduced, but the ergonomic support for hand positioning deteriorates

Engineering Contradiction:
Improvestructural complexity of support surfaceVSAvoidergonomic support for hand positioning
Core Design Contradiction:
Device complexityVSEase of operation

Solution Approach 1:

The support surface is articulated to the drawer via a hinge, allowing it to move with the drawer while maintaining proper ergonomic positioning when extended. This simple hinged connection provides adaptive ergonomic support without requiring complex adjustment mechanisms, resolving the contradiction between device complexity and ease of operation

Inventive Principle:
Principle #15Dynamics

Data Source

PatentEP3997557B1Retractable tactile interface
Publication Date: 2024.08.28 SAFRAN ELECTRONICS & DEFENSE (FR)
  • EP3997557B1 patent drawingFigure 1~2
  • EP3997557B1 patent drawingFigure 3~4
  • EP3997557B1 patent drawingFigure 5~6

AI summary

The invention relates to a tactile interface (1) comprising a touch pad (3) and a support (2), the touch pad (3) being hingedly attached to the support (2) between an extended active position and a retracted inactive position, in which the pad (3) is folded back towards the support.