Vehicle Net Partition Rod Mounting Arrangement

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Solution Overview

Problem

Existing vehicle mounting arrangements for net partition rods can lead to the roof liner detaching from the bodyshell during airbag deployment, causing interference with the deploying head airbag and potentially displacing the net partition panel into the vehicle interior.

Innovation Solution

A mounting arrangement featuring a fastening clip for a simple connection to the roof liner and a detachable latching element for attachment to the vehicle bodyshell, ensuring the panel is securely fastened with a stronger initial connection point to prevent interference during airbag deployment.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If the panel is attached to the roof liner with a simple mounting arrangement, then the ease of manufacture is improved, but the reliability of attachment during airbag deployment deteriorates

Engineering Contradiction:
Improveease of manufactureVSAvoidreliability
Core Design Contradiction:
Ease of manufactureVSReliability

Solution Approach 1:

The mounting arrangement is divided into two separate connection points: a first connection point attaching the panel to the roof liner, and a second connection point attaching the panel to the body-side support part. This segmentation allows each connection to be optimized independently - the first connection provides easy manufacturing through simple attachment while the second connection provides reliable anchoring to the vehicle structure during airbag deployment.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

Different attachment methods are applied at different locations: the first connection point uses a simpler mounting method attached to the roof liner for ease of manufacture, while the second connection point uses a more robust mounting method attached to the body-side support part for reliability during deployment. Each location receives the appropriate attachment quality for its functional requirements.

Inventive Principle:
Principle #3Local quality

2Reliability

If the panel is firmly attached to the body-side support part, then the reliability is improved, but the device complexity increases

Engineering Contradiction:
ImprovereliabilityVSAvoiddevice complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The mounting system is segmented into two distinct connection points with different functions. The first connection point handles the roof liner attachment with simpler requirements, while the second connection point handles the body-side attachment with higher reliability requirements. This segmentation allows the complex reliable attachment to be localized only where necessary.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The panel serves multiple functions: it provides a mounting surface for the roof liner and simultaneously serves as an attachment point for the body-side support part. By making the panel multi-functional, the system avoids needing additional separate components for each attachment function, thereby reducing overall device complexity while maintaining reliability.

Inventive Principle:
Principle #6Universality (Multi-functionality)

3Ease of operation

If the roof liner is detached during airbag deployment, then the ease of operation is improved for airbag deployment, but the safety deteriorates due to potential interference

Engineering Contradiction:
Improveease of operationVSAvoidsafety
Core Design Contradiction:
Ease of operationVSObject-affected harmful factors

Solution Approach 1:

The panel is pre-attached to the body-side support part at the second connection point before airbag deployment occurs. This preliminary attachment creates a stable anchor that prevents the panel from becoming an interference contour during airbag deployment, thereby eliminating the safety hazard while allowing the roof liner to detach for ease of airbag operation.

Inventive Principle:
Principle #9Preliminary anti-action

Solution Approach 2:

The attachment system provides different levels of security at different locations: the first connection point allows detachment for ease of airbag operation, while the second connection point maintains firm attachment to prevent safety hazards. Each location receives the appropriate attachment quality for its specific functional requirements during deployment.

Inventive Principle:
Principle #3Local quality

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

The solution ensures the net partition panel remains securely attached, preventing interference with the deploying head airbag and maintaining its position within the vehicle, even under forces exerted during airbag deployment.

Implementation Method 1

the opening edge portion of the headliner mounting hole can be clamped between the fixing clip and the bezel base portion

Methodology Applied
Scientific EffectClamping force: Mechanical Force

Implementation Method 2

the panel is also attached to the vehicle body shell via a second attachment point

Methodology Applied
Scientific EffectLatching connection: Mechanical Fastener

Data Source

PatentEP3736172B1Vehicle with a mounting arrangement for suspending a component
Publication Date: 2021.11.03 VOLKSWAGEN AG
  • EP3736172B1 patent drawingFigure 1
  • EP3736172B1 patent drawingFigure 2
  • EP3736172B1 patent drawingFigure 3

AI summary

The invention relates to a vehicle with a mounting arrangement for hanging a component, in particular a partition net rod (9), in a hanging eyelet (21) formed on a body-side hanging eyelet carrier part (19) which is covered by a headliner (11) from the vehicle interior, and with a cover plate (25) which is connected at a first connection point (A1) to an opening edge region (29) of a headliner mounting opening (31), wherein during the installation of the cover plate, the cover plate (25) can be guided in a joining direction (F) from the vehicle interior through the headliner mounting opening (31) until a flat cover plate base section (35) comes into contact with the opening edge region (29) of the headliner mounting opening (31) and a cover plate mounting body (47) projects through the headliner mounting opening (31), and wherein the cover plate (25) is attached to the roof lining (11) by means of its aperture mounting body (47) forming the first attachment point (A).According to the invention, the first attachment point (A1) is associated with a fastening clip (49) formed as a separate component, which can be slid in a plugging direction (S) onto a guide contour (51) of the cover mounting body (47) until it reaches a locking position (V), in which the fastening clip (49) engages the opening edge area (29) of the headliner mounting opening (31).