Telescopic Shading Profile for Non-Parallel Vehicle Guides

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Solution Overview

Problem

Existing shading devices for motor vehicle transparent surfaces face challenges in ensuring that lateral shading structure sections can be safely introduced into vehicle-fixed accommodation spaces, particularly when the guide arrangements are non-parallel, leading to incomplete shading and potential buckling of the shading structure.

Innovation Solution

The shading device employs a pull-out profile with telescopic sections and sliding guide tracks, along with a transverse guide strand that provides additional rigidity and support, ensuring linear guidance and preventing deflection, even when guide arrangements are non-parallel, using materials like PTFE tape for flexibility and durability.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If the guide arrangements are non-parallel to accommodate vehicle structure, then the shading device can be installed in standard vehicle configurations, but the lateral shading structure sections cannot be safely introduced into accommodation spaces

Engineering Contradiction:

Improveadaptability to vehicle structureVSAvoidsafe introduction of lateral sections

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The pull-out profile is divided into a middle part and two lateral telescopic sections that can move independently. This segmentation allows each section to be guided separately into the accommodation spaces, accommodating the non-parallel guide arrangements while ensuring reliable insertion of lateral sections.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Sliding guide tracks are introduced as intermediary elements between the lateral telescopic sections and the guide arrangements. These tracks provide linear guidance and support, ensuring that lateral sections are safely guided into accommodation spaces even when the overall guide arrangements are non-parallel.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Stability of the object's composition

If the transverse guide strand is made rigid to prevent buckling, then linear guidance is achieved, but the flexibility of the shading structure is reduced

Engineering Contradiction:

Improvelinear guidance stabilityVSAvoidflexibility of shading structure

Core Design Contradiction:

Stability of the object's compositionVSAdaptability or versatility

Solution Approach 1:

The transverse guide strand has different rigidity characteristics in different regions. The central part is more rigid to provide stable linear guidance, while the lateral sections maintain flexibility to accommodate the non-parallel guide arrangements and allow the shading structure to remain flexible overall.

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

The transverse guide strand is formed as a composite structure combining rigid and flexible elements. This allows it to provide the necessary linear guidance stability in the central region while maintaining flexibility in lateral sections to accommodate vehicle-specific guide arrangements.

Inventive Principle:

Principle #40Composite materials

3Area of stationary object

If the lateral guide arrangements converge towards the center, then complete shading coverage is achieved, but the lateral shading structure sections deflect during movement

Engineering Contradiction:

Improveshading coverage areaVSAvoidguidance stability

Core Design Contradiction:

Area of stationary objectVSStability of the object's composition

Solution Approach 1:

Sliding guide tracks serve as intermediary guidance elements that run parallel to the converging guide arrangements. These tracks provide linear support to the lateral telescopic sections, preventing deflection during movement while allowing the overall structure to achieve complete shading coverage through the converging configuration.

Inventive Principle:

Principle #24Intermediary (Mediator)

Data Source

PatentEP2979908B1Shading device for a transparent surface of a motor vehicle

Publication Date: 2019.09.11 BOS GMBH & CO KG

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AI summary

A shading device of this type, comprising a flexible shading structure, two vehicle-mounted, non-parallel lateral guide arrangements flanking a displacement path of the shading structure on opposite sides, a dimensionally stable extension profile arranged on a front end region of the shading structure in the extension direction, with drive means for parallel displacement of the extension profile being assigned to the extension profile, and a bendable transverse guide string extending across the width of the front end region of the shading structure and dipping into associated receiving spaces in the area of the opposite lateral guide arrangements, is known.According to the invention, the extension profile comprises a central section and two lateral telescopic sections guided in the central section. These sections are provided with sliding guide tracks extending along the extension profile for the lateral guide sections of the transverse guide string. These tracks ensure relative linear displacement between the telescopic sections and the guide string sections while simultaneously preventing the guide string sections from deflecting. Applications include rear window assemblies of passenger cars.