Rotary Air Passage Closure for Pump-Free Air Injection
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Solution Overview
Problem
Conventional air injection apparatuses are inconvenient for users due to the need for a separate manual pump, poor sealing, and a heavy wearing sensation when installed on clothing, making it difficult to inject or discharge air efficiently.
Innovation Solution
An air injection apparatus with a main body featuring an air passage and an opening and closing part that can be rotated to open or close the passage, allowing air to be injected or discharged without a separate pump, using a hose connection and screw-coupling mechanisms for secure attachment to clothing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a separate manual pump is used to inject air into the air tube, then air injection function is achieved, but device complexity and ease of operation deteriorate due to requiring additional components and multiple steps
Solution Approach 1:
The patent merges the air injection function directly into the cap structure by forming an air injection hole through the cap body, eliminating the need for a separate manual pump. The cap simultaneously serves as both the closure component and the air injection device, reducing overall device complexity while improving ease of operation.
Solution Approach 2:
The cap is designed to perform multiple functions: sealing the container opening and providing air injection capability. By integrating the air injection hole into the cap, the system uses existing structural elements to provide additional functionality without requiring separate dedicated components.
2Reliability
If an opening and closing cap is used to seal the injection tube, then sealing function is provided, but sealing reliability deteriorates due to insufficient sealing performance
Solution Approach 1:
The air injection hole is formed directly through the cap body, integrating the sealing function and air injection function into a single component. This eliminates the need for separate injection mechanisms and reduces the number of potential leakage points, thereby improving sealing reliability while maintaining operational convenience.
3Ease of operation
If a separate air adjustment pin is used to discharge air from the air tube, then air discharge function is achieved, but device complexity and ease of operation worsen due to requiring additional components
Solution Approach 1:
The cap integrates both air injection and air discharge functions by forming an air injection hole through its body. The same cap structure that provides sealing also enables air discharge, eliminating the need for a separate air adjustment pin and reducing device complexity.
Data Source
AI summary
An air injection apparatus is provided according to one embodiment of the present invention. The air injection apparatus includes a main body in which an air passage is formed, and an opening and closing part which is coupled to one end of the main body and in which an opening and closing protrusion having a predetermined length, protruding toward the air passage, and configured to open or close the air passage is formed on an inner surface thereof, wherein at least a part of the opening and closing protrusion may be inserted into the air passage to seal the air passage when the opening and closing part is moved in a first direction toward the main body.