Tyre Sealant Valve Blocking Mechanism
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Solution Overview
Problem
Existing tire repair kits face difficulties in safe and easy operation, particularly due to the risk of accidental opening of the drain valve during tire sealing, leading to sealant leakage and potential compressor damage, especially in stressful emergency situations.
Innovation Solution
The pressure relief valve is designed to be actuated only when the sealant container is disconnected, ensuring it cannot be opened during sealant delivery, with mechanical or electrical blocking mechanisms preventing incorrect operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a permanently installed drain valve is provided in the line system for manual operation, then the user can easily reduce tire pressure in any operating state, but the drain valve may be accidentally opened during sealant delivery causing sealant leakage and compressor damage
Solution Approach 1:
The patent applies preliminary anti-action by providing a cover that blocks the drain valve opening before sealant delivery begins. The cover is removed only after sealant delivery is complete, preventing any possibility of accidental drain valve operation during the critical sealant injection phase. This preliminary protective measure eliminates the harmful effect before it can occur.
Solution Approach 2:
The patent segments the operational phases by introducing a cover that physically separates the drain valve from the user during sealant delivery. The cover acts as an independent protective component that can be removed and replaced, allowing the drain valve to remain accessible during inflation while being protected during sealant delivery.
2Ease of manufacture
If the drain valve is permanently installed and accessible, then the device is simple and inexpensive to produce, but it creates safety risks during sealant delivery
Solution Approach 1:
The patent introduces a cover as an intermediary element between the user and the drain valve during sealant delivery. This simple component mediates the interaction by physically blocking access to the drain valve when sealant is being delivered, preventing contamination without requiring complex interlocking mechanisms or expensive safety systems.
3Reliability
If the pressure relief valve is blocked when sealant container is connected, then accidental opening is prevented, but the device complexity increases
Solution Approach 1:
The patent extracts the protective function from the drain valve mechanism itself and places it in a separate cover component. Instead of making the drain valve inherently blockable through complex internal mechanisms, the cover is simply removed to enable drain valve operation, separating the safety function from the valve structure.
Data Source
Figure 1a~1b
Figure 1c~1d
Figure 2
AI summary
A device (1) for sealing and inflating motor vehicle tyres, wherein the device has, in a housing, a compressor driven by a motor, preferably an electric motor, for generating the sealing or pumping pressure, and also a connection for a sealant container (5), a valve and distributing unit (4) for sealant and compressed gas, and furthermore has connecting means, such as tubes and lines, and also switching, control and display devices for operation of the device, wherein the device also includes a manually actuable pressure discharge valve (3) for reducing the tyre pressure, wherein the pressure discharge valve is designed in such a manner that, when the sealant container is connected and/or during the conveying of sealant out of the sealant container into the tyre, an actuation or a discharge of the pressure is prevented.