Tire Repair Kit Extraction Cap Segmented Flow Channels
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Solution Overview
Problem
Conventional tire puncture repair kits face challenges in precision fitting between the inner lid and cap body, leading to yield rate drops and increased process costs, along with issues of air leakage during storage and operation, due to the need for simultaneous release of the inner lid and plug shank portion.
Innovation Solution
A puncture repair kit design featuring a compressor with a discharge port and a bottle unit with an extraction cap, utilizing coupling means for secure integration, and release mechanisms to independently open flow channels, reducing the precision required for fitting and preventing air leaks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the inner lid and plug shank portion are designed to simultaneously close both flow channels, then the sealing reliability is improved, but the manufacturing precision requirements increase and yield rate drops
Solution Approach 1:
The patent divides the closing function into two separate components: the inner lid closes the first flow channel while the plug shank portion closes the second flow channel. This segmentation allows each component to be manufactured and assembled independently, reducing the cumulative fitting precision requirements while maintaining reliable sealing for both channels.
2Ease of operation
If the inner lid is designed to automatically come off under compressed air, then the ease of operation is improved, but the fitting precision requirements increase to prevent air leakage
Solution Approach 1:
The patent segments the release mechanism so that the inner lid can be independently designed to respond to compressed air pressure and automatically come off to open the first flow channel, while the plug shank portion independently controls the second flow channel. This reduces the precision requirements for simultaneous movement while maintaining automatic operation capability.
Solution Approach 2:
The inner lid is designed with dynamic response to compressed air pressure, allowing it to automatically transition from closed to open state based on pressure conditions. This dynamic design simplifies operation while the segmented structure maintains acceptable manufacturing precision tolerances.
3Reliability
If both flow channels are closed during storage, then the reliability of preventing liquid leakage is improved, but the device complexity increases
Solution Approach 1:
The patent uses segmented closing components (inner lid for first channel, plug shank portion for second channel) that can independently maintain closure during storage. This segmentation achieves reliable leakage prevention while actually reducing complexity compared to a single complex mechanism that would need to control both channels simultaneously.
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 design enhances yield rates and reduces process costs by relaxing fitting precision, preventing liquid leakage during storage, and ensuring reliable operation by allowing independent opening of flow channels, thus ensuring effective puncture repair.
Implementation Method 1
the pressure in the bottle container (a) increases, which reduces a pressure difference between the inside and outside of the inner lid body (ha)
Implementation Method 2
the compressed air to flow through the first flow channel (e) into the inner lid body (ha), and upon an increase in internal pressure therein
Data Source
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AI summary
The invention allows the relaxation of the precision of fitting the inner lid to the cap body while maki ng removal of the inner lid more reliable. In the bottle unit of the tire puncture repair kit that has an extracti on cap attached to the mouth porti on of the bottle container, the extraction cap is provided with: a first flow channel for taking in compressed air from a compressor into the bottle container; a second flow channel for successively taking out the puncture repair liquid and compressed air from the bottle container; and first and second closing means for closing the first and second flow channels in the pre-coupling state. The extraction cap is provided with a release means for releasing the second closing means and opening the second flow channel when connection occurs.