Draft Deflector Cassette Sealing Integration

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Solution Overview

Problem

Existing motor vehicle designs face challenges in visually appealing and simple installation of draft deflector cassettes in the upper part of the cowl frame, with separate components requiring complex sealing transitions.

Innovation Solution

A draft deflector cassette with a U-shaped cross-sectional profile and integral decorative seal, where the frame seal interacts with the interior lining to create a seamless sealing and mounting system, reducing the number of parts and simplifying installation by using vulcanization for sealing components.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If separate sealing components are used for the draft deflector cassette installation, then the sealing function is achieved, but the installation complexity and part quantity increase

Engineering Contradiction:

Improvesealing functionVSAvoidnumber of parts

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent combines the frame seal and further seal into a single integrated sealing component that performs multiple sealing functions. This unified seal is mounted on the draft deflector cassette and provides both the frame seal connection and the interior lining seal connection, eliminating the need for separate sealing components and reducing installation complexity.

Inventive Principle:

Principle #5Merging (Combining)

2Reliability

If multiple separate seals are used to seal the transition region, then the sealing is thorough, but the visual appearance and installation simplicity are compromised

Engineering Contradiction:

Improvesealing thoroughnessVSAvoidinstallation simplicity

Core Design Contradiction:

ReliabilityVSEase of operation

Solution Approach 1:

The integrated seal combines multiple sealing functions into a single component that can be installed in one operation. The seal includes a frame seal connection region and an interior lining seal connection region, allowing thorough sealing of the transition region while maintaining installation simplicity.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The seal is designed to be self-mounting on the draft deflector cassette, where the mounting structure of the cassette automatically positions and secures the seal during installation. This self-service mounting mechanism eliminates the need for separate fastening operations while ensuring thorough sealing.

Inventive Principle:

Principle #25Self-service

3Strength

If the further seal is connected to the interior lining by separate fasteners, then the connection is secure, but the visual appearance and installation complexity are degraded

Engineering Contradiction:

Improveconnection securityVSAvoidfastening complexity

Core Design Contradiction:

StrengthVSDevice complexity

Solution Approach 1:

The further seal is designed with a self-mounting structure that utilizes the mounting structure of the draft deflector cassette to secure the seal to the interior lining. The cassette's mounting structure automatically positions and secures the seal during installation, eliminating the need for separate fasteners while maintaining connection security.

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

The mounting function and sealing function are merged into a single integrated system. The draft deflector cassette's mounting structure serves dual purposes: mounting the cassette itself and securing the further seal to the interior lining, thereby simplifying the fastening system while maintaining connection strength.

Inventive Principle:

Principle #5Merging (Combining)

4Reliability

If a complex multi-component sealing system is used, then the sealing reliability is high, but the manufacturing cost and part inventory are increased

Engineering Contradiction:

Improvesealing reliabilityVSAvoidpart quantity

Core Design Contradiction:

ReliabilityVSQuantity of substance

Solution Approach 1:

The patent merges multiple sealing components into a single integrated seal that provides all necessary sealing functions. This unified seal includes regions for connecting to both the frame seal and the interior lining, reducing the total number of parts while maintaining sealing reliability through its multi-functional design.

Inventive Principle:

Principle #5Merging (Combining)

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

This solution provides a visually appealing and efficient sealing system that simplifies the installation of draft deflector cassettes, enhances sealing, and reduces part complexity, improving both aesthetics and functionality.

Implementation Method 1

A draft deflector cassette (6) is arranged sealingly between a frame seal (9) and a further seal (17)

Methodology Applied

Scientific EffectSealing:

Implementation Method 2

using vulcanization for sealing components

Methodology Applied

Scientific EffectVulcanization:

Data Source

PatentUS8794697B2Motor vehicle with a draft deflector cassette

Publication Date: 2014.08.05 DR ING H C F PORSCHE AG

AI summary

A motor vehicle has a cowl (1) with an upper frame part (2) and a closable vehicle roof opening (27) in the region of the upper frame part (2). The cowl (1) has a draft deflector cassette (6) for movably mounting a draft deflector. An interior lining (10) and a frame seal (9) are connected to a side of the upper frame part (2) that faces an interior of the vehicle and a decorative seal (17) interacts with the interior lining (10). The draft deflector cassette (6) is arranged between the frame seal (9) and the decorative seal (17). The draft deflector cassette can be placed, with simple installation, in a visually attractive manner in the region of the upper frame part (2) of the cowl frame.