Vehicle Door Extrusion Profile with Integrated Switch and Cut Protection

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Solution Overview

Problem

Existing door gap protection systems for vehicles are inefficient in preventing finger jamming and vandalism, as they require separate components for jamming detection, protection, and trauma prevention, which can be complex and prone to external influences.

Innovation Solution

An extruded profile made from elastomeric material with integrated continuous switch elements and cutting-protection installations, capable of being trimmed to length, which merges jamming protection, detection, and trauma prevention into a single component, enhancing security and reducing component complexity.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If separate components are used for jamming detection, protection, and trauma prevention, then functional completeness is achieved, but device complexity increases

Engineering Contradiction:

Improvejamming protection functionalityVSAvoidnumber of components

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent combines multiple separate protection components (jamming detection, protection, and trauma prevention) into a single integrated extruded profile made of elastomeric material. The switch element and cutting-protection installation are embedded within the same profile structure, eliminating the need for multiple separate components while maintaining all required functions.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The extruded profile serves multiple functions simultaneously: it provides mechanical protection against jamming, houses the switch element for detection, incorporates cutting-protection installation for trauma prevention, and allows for trimming to length. This multi-functional design replaces what would traditionally require several separate components.

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Reliability

If multiple separate components are used for door gap protection, then comprehensive protection is provided, but ease of operation deteriorates due to installation complexity

Engineering Contradiction:

Improvedoor gap protectionVSAvoidinstallation simplicity

Core Design Contradiction:

ReliabilityVSEase of operation

Solution Approach 1:

All protection functions are merged into a single extruded profile that can be installed as one unit. The profile contains the switch element, cutting-protection installation, and structural components all integrated together, simplifying installation to a single operation rather than assembling multiple separate parts.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The switch element and cutting-protection installation are pre-integrated into the extruded profile during manufacturing. This preliminary integration means that during installation, the user only needs to install the complete profile as a single component, with all protective functions already in place and properly positioned.

Inventive Principle:

Principle #10Preliminary action

3Reliability

If separate components are used for protection systems, then functional completeness is achieved, but maintenance requirements increase

Engineering Contradiction:

Improveprotection system functionalityVSAvoidmaintenance frequency

Core Design Contradiction:

ReliabilityVSEase of repair

Solution Approach 1:

The integration of all protection functions into a single profile reduces the number of potential failure points and eliminates interfaces between separate components. The encapsulated design protects internal elements from external influences, reducing maintenance needs while maintaining complete protection functionality.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The integrated design allows the entire protection system to be replaced as a single unit if needed, simplifying maintenance to a straightforward replacement operation rather than requiring disassembly and repair of multiple separate components.

Inventive Principle:

Principle #25Self-service

4Reliability

If the extruded profile contains integrated switch elements and cutting-protection installation, then reliability improves, but manufacturing complexity increases

Engineering Contradiction:

Improvesystem immunity to external influencesVSAvoidproduction process complexity

Core Design Contradiction:

ReliabilityVSEase of manufacture

Solution Approach 1:

The switch element and cutting-protection installation are integrated into the extruded profile using a co-extrusion or embedding process during single-step manufacturing. This approach consolidates what would otherwise require separate assembly operations into one continuous production process, maintaining reliability while controlling manufacturing complexity.

Inventive Principle:

Principle #5Merging (Combining)

Data Source

PatentUS10844645B2Extrusion profile and method for producing the same, and door for a vehicle

Publication Date: 2020.11.24 KNORR BREMSE GMBH

AI summary

An extrusion profile for a door of a vehicle is made of an elastomeric material having at least one continuous switching element for a detection device for detecting a compression of the extrusion profile and/or is made of a continuous cut protection device, wherein the switching element and/or the cut protection device is/are integrated into the extrusion profile and can be cut to length with the extrusion profile.