Inflatable Stretcher Air Hose Coupling for Multi-Size Compatibility
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Solution Overview
Problem
Conventional inflatable stretchers require air hoses and coupling mechanisms of specific sizes, limiting flexibility in replacement and maintenance, as well as restricting the use of functionally improved components.
Innovation Solution
Incorporation of a limiting member around the air inlet that defines a changeable binding space to securely hold air hoses of various sizes without the need for special securing elements, utilizing elastic rings, cords, or belts that adjust tension to maintain a secure connection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If an air hose is directly inserted into an opening on the air mattress without additional holding devices, then the coupling design is simple, but the air hose may separate from the air mattress due to movement or pressure changes
Solution Approach 1:
A limiting member is introduced as an intermediary component between the air hose and air mattress. This limiting member defines a binding space that secures the air hose to the air mattress, preventing separation while maintaining a relatively simple overall structure. The limiting member acts as a mediator that resolves the conflict between simple coupling design and reliable connection.
2Reliability
If conventional coupling designs are used to securely hold the air hose, then the connection stability is improved, but the air hose and coupling mechanisms must match in size, limiting replacement flexibility
Solution Approach 1:
The limiting member is designed with a binding space that can accommodate air hoses of different sizes. This universal design allows the same limiting member to securely hold various规格的 air hoses through adjustable binding mechanisms, enabling flexible replacement and maintenance without requiring size-matched coupling components.
Solution Approach 2:
The limiting member incorporates dynamic adjustment capabilities through elements such as elastic rings, cords, or belts that can tension-adjust to maintain secure connection. This dynamic characteristic allows the binding space to adapt to different air hose sizes while maintaining connection stability, resolving the contradiction between fixed-size coupling and flexible replacement.
3Ease of operation
If the air mattress is moved relative to the air hose during use, then the inflatable stretcher can be repositioned, but the air hose may become separated from the air mattress
Solution Approach 1:
The limiting member applies preliminary constraining force to the air hose through the binding space, creating pre-tension that prevents separation before movement occurs. This preliminary anti-action counteracts the separating force generated during repositioning, allowing the air mattress to be moved relative to the air hose while maintaining secure connection.
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
Enables the use of air hoses of different sizes and specifications, providing a secure and adjustable connection that resists movement, enhancing the stability and flexibility of the inflatable stretcher.
Implementation Method 1
utilizing elastic rings, cords, or belts that adjust tension to maintain a secure connection
Data Source
AI summary
An inflatable stretcher for carrying and conveniently transferring a patient to another patient carrying device includes an air mattress having an upper sheet member and a longitudinally perforated lower sheet member, which are fixedly connected to each other along their peripheral edges to form an inflatable air bag. The air mattress has at least one air inlet, via which an air hose is communicably connected to the air bag. The air mattress includes at least one limiting member located in the vicinity of the air inlet. The limiting member defines a binding space, which is changeable in size to correspond to a size of the air hose, such that the limiting member can always be fitly set or wrapped around the air hose to hold the air hose to the air mattress even if the air hose has a specification not matching the air inlet on the air mattress.