Head-up Display Sun Visor Fastening Mechanism

Solution Overview

Problem

Existing head-up display systems with removable sun visors require both hands and take time to fasten, which is inefficient for pilots in aeronautical applications.

Innovation Solution

A sun visor fastening system using two mechanical pieces forming a hinge and a locking mechanism, allowing single-handed operation with minimal visual obstruction, comprising cylindrical hollow parts and clip mechanisms for secure attachment to the optical combiner.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If traditional fastening systems with multiple attachments are used, then the sun visor can be securely fastened on the optical combiner, but the operation requires both hands and takes considerable time

Engineering Contradiction:

Improveease of fastening operationVSAvoidtime required for fastening

Core Design Contradiction:

Ease of operationVSLoss of time

Solution Approach 1:

The fastening system is divided into two distinct functional components: a hinge mechanism for attachment and a clip mechanism for securing. This segmentation allows each component to perform its specific function efficiently, reducing the overall complexity of the fastening operation and enabling quicker installation while maintaining security.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The clip mechanism is designed to automatically engage with the corresponding receptacle on the optical combiner, providing self-service fastening. Once the hinge attaches the visor to the combiner, the clip automatically secures itself without requiring additional manual intervention, thus reducing both time and hand requirements for the operation.

Inventive Principle:

Principle #25Self-service

2Reliability

If multiple fastening attachments are used around the perimeter, then the sun visor is securely fixed, but the system becomes more complex and requires more hands for operation

Engineering Contradiction:

Improvesecurity of fasteningVSAvoidcomplexity of fastening system

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The fastening system is divided into two distinct functional components: a hinge mechanism for attachment and a clip mechanism for securing. This segmentation allows each component to perform its specific function efficiently, reducing the overall complexity of the fastening operation and enabling quicker installation while maintaining security.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The hinge and clip mechanisms are combined into a single integrated fastening assembly that attaches to the optical combiner at one location. This merging of functions reduces the number of separate attachments needed around the perimeter, simplifying the overall system while maintaining reliable fixation.

Inventive Principle:

Principle #5Merging (Combining)

3Reliability

If a robust fastening system is used to withstand vibratory environments, then the sun visor remains securely attached, but the operation becomes more time-consuming and complex

Engineering Contradiction:

Improverobustness in vibratory environmentVSAvoidease of mounting operation

Core Design Contradiction:

ReliabilityVSEase of operation

Solution Approach 1:

The fastening system is divided into two distinct functional components: a hinge mechanism for attachment and a clip mechanism for securing. This segmentation allows each component to perform its specific function efficiently, reducing the overall complexity of the fastening operation and enabling quicker installation while maintaining security.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The clip mechanism is designed to automatically engage with the corresponding receptacle on the optical combiner, providing self-service fastening. Once the hinge attaches the visor to the combiner, the clip automatically secures itself without requiring additional manual intervention, thus reducing both time and hand requirements for the operation.

Inventive Principle:

Principle #25Self-service

Data Source

PatentUS9042020B2Head-up display system with optical combiner comprising a removable sun visor

Publication Date: 2015.05.26 THALES SA

AI summary

The general field of the invention is that of the display systems comprising an optical combiner and a removable sun visor. The optical combiner is a semi-reflecting plate and the sun visor is a thin, thick and tinted plate, the sun visor comprising means for mechanically fastening on the optical combiner. The optical combiner comprises, on a first side, a first mechanical piece and, on a second side opposite to the first side, a second mechanical piece, the optical sun visor comprises, on a first side, a third mechanical piece and, on a second side opposite to the first side, a fourth mechanical piece in the form of a clip, the third mechanical piece being able to be sunk into the first mechanical piece so as to form a hinge, the rotation axis of which is parallel to the first side of the optical combiner, the fourth mechanical piece being able to be clipped into the third mechanical piece so as to lock the sun visor on the combiner.