Vehicle Antenna Sealing Plug for Heat-Resistant Feed-Through Sealing

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Solution Overview

Problem

Existing methods for sealing antennas with flexible interconnect devices in vehicles, such as those used in spoilers, often fail to meet temperature and sealing requirements, are time-consuming, and require specialized tools.

Innovation Solution

An antenna sealing plug made from a thermoplastic elastomer, terpolymer, or synthetic rubber, featuring a sealing surface and a slot-like passage, which allows for secure sealing of the feed-through and flexible antenna interconnect device without the need for hot melt adhesive or specialized tools.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If hot melt adhesive is used to seal the antenna feed-through, then sealing is achieved, but the sealing properties do not meet temperature requirements and processing time is long

Engineering Contradiction:

Improvesealing propertiesVSAvoidtemperature requirements

Core Design Contradiction:

ReliabilityVSTemperature

Solution Approach 1:

The patent changes the material parameter from temperature-sensitive hot melt adhesive to temperature-resistant elastomer, enabling the sealing material to maintain its sealing properties at higher temperatures without degradation

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The patent replaces the reusable hot melt adhesive application process with a single-use elastomer sealing plug that is pre-formed and discarded after installation, eliminating the need for specialized application tools and reducing processing time

Inventive Principle:

Principle #27Cheap short-living objects (Disposable)

2Reliability

If hot melt adhesive is used to seal the antenna feed-through, then sealing is achieved, but processing time is long and specialized tools are required

Engineering Contradiction:

Improvesealing propertiesVSAvoidprocessing time

Core Design Contradiction:

ReliabilityVSLoss of time

Solution Approach 1:

The elastomer sealing plug is pre-formed with the sealing geometry and slot-like passage configured before installation, eliminating the need for on-site adhesive application and tooling setup, thus reducing processing time

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The patent extracts the sealing function from the adhesive application process and embeds it into a pre-formed elastomer plug, separating the sealing function from the installation process and eliminating the need for specialized adhesive application tools

Inventive Principle:

Principle #2Taking out (Extraction)

3Reliability

If hot melt adhesive is used to seal the antenna feed-through, then sealing is achieved, but the sealing properties do not fully satisfy product requirements

Engineering Contradiction:

Improvesealing propertiesVSAvoidproduct requirements

Core Design Contradiction:

ReliabilityVSEase of manufacture

Solution Approach 1:

The patent uses elastomer material that combines sealing functionality with temperature resistance in a single material system, meeting multiple product requirements simultaneously without relying on adhesive bonds that fail at high temperatures

Inventive Principle:

Principle #40Composite materials

Data Source

PatentUS12334621B2Antenna sealing plug and antenna device for a vehicle

Publication Date: 2025.06.17 HIRSCHMANN CAR COMMUNICATION

AI summary

An antenna sealing plug for a flexible antenna interconnect device includes a sealing surface extending around the antenna sealing plug in a circumferential direction and sealing a feed-through of a vehicle that leads into the vehicle, and a slot-like passage. A feedthrough portion of the flexible antenna interconnect device can be guided through the feed-through of the vehicle. The feedthrough portion of the flexible antenna interconnect device can be guided through the slot-like passage of the antenna sealing plug in a sealing manner.