Plastic-Thread Tire Valve Connector With Integrated Pressure Release

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Solution Overview

Problem

Current roadside assistance sets and tire connection valves face challenges in being cost-effective and dimensionally stable, while also needing to regulate air pressure efficiently.

Innovation Solution

A tire connection valve device with a plastic-threaded base body, incorporating a release valve and a closing element that opens with tire valve connection, allowing air and sealant flow, and a breakdown assistance set that includes this device for easy and safe operation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Strength

If metal threads are used in the tire connection valve device, then strength and dimensional stability are improved, but manufacturing cost and complexity increase

Engineering Contradiction:
Improvethread strengthVSAvoidmanufacturing cost
Core Design Contradiction:
StrengthVSEase of manufacture

Solution Approach 1:

The patent employs a plastic thread instead of metal, accepting that the thread may be damaged during use but prioritizing cost-effectiveness and ease of manufacture. The plastic thread is sufficient for the intended application lifecycle, and replacement is simpler and cheaper than metal thread replacement.

Inventive Principle:
Principle #27Cheap short-living objects (Disposable)

Solution Approach 2:

The patent substitutes metal mechanical components with plastic alternatives. The plastic thread provides the necessary mechanical function at lower cost and with easier manufacturing processes, eliminating the need for expensive metal machining while maintaining adequate strength for the application.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

2Volume of moving object

If the tire connection valve device is made compact, then space requirements are reduced, but the arrangement of functional elements becomes more difficult

Engineering Contradiction:
Improvedevice volumeVSAvoidfunctional element arrangement
Core Design Contradiction:
Volume of moving objectVSDevice complexity

Solution Approach 1:

The patent combines multiple functional elements into a single integrated plastic base body. The thread, release valve, and closing element are all formed as one piece through injection molding, eliminating the need for separate components and complex assembly. This merging approach achieves compactness while simplifying the overall device structure.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The plastic base body serves multiple functions simultaneously: it provides the threaded connection interface, houses the release valve mechanism, and incorporates the closing element. This multi-functionality in a single component reduces the number of parts needed and simplifies the compact design.

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

3Ease of operation

If a release valve is integrated into the tire connection valve device, then air pressure regulation is improved, but device complexity increases

Engineering Contradiction:
Improveair pressure regulationVSAvoidvalve mechanism complexity
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The release valve is integrated directly into the plastic base body as a molded-in feature rather than a separate component. The valve element, spring, and housing are all formed as one piece through injection molding, providing air pressure regulation functionality while minimizing the number of discrete parts and assembly steps.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The release valve is designed to operate automatically based on internal pressure conditions. The spring-loaded valve element opens when pressure exceeds a certain threshold, providing self-regulating air pressure control without requiring external control mechanisms or complex electronics.

Inventive Principle:
Principle #25Self-service

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 provides a cost-effective, dimensionally stable tire connection valve that regulates air pressure and allows easy manufacturing, ensuring efficient air flow and sealant distribution, enhancing user safety and reducing production costs.

Implementation Method 1

the tire connection valve is designed to be self-closing by a spring-loaded valve body

Methodology Applied
Scientific EffectSpring force: Spring

Implementation Method 2

the tire connection valve has an annular seal arranged in its inner passage cross-section provided for air and/or sealant, which annular seal a) has a sealing surface on the outlet side

Methodology Applied
Scientific EffectSealing:

Data Source

PatentEP4169745B1Tyre connection valve device for connecting a puncture aid set to a tyre valve and puncture aid set with such a device
Publication Date: 2025.01.15 CONTINENTAL REIFEN DEUTSCHLAND GMBH
  • EP4169745B1 patent drawingFigure 1

AI summary

The invention relates to a tire connection valve device as a connecting element between an inflation hose of a tire repair kit and a tire valve of a vehicle tire, wherein the tire connection valve device has a base body with an inlet opening and an outlet opening, one opening comprising at least one thread via which the tire connection valve device can be connected to the tire valve, and the tire connection valve device has a release valve for regulating the air, the thread comprising plastic. Furthermore, the invention relates to a tire repair kit for sealing and inflating vehicle tires, comprising a compressor with an electric motor for generating the sealing and/or pumping pressure, a connection for a container with sealant, and an inflation hose through which air and/or sealant can flow via the compressor, wherein the tire repair kit includes a tire connection valve device as described.