Rotating Coupling Mechanism for CPAP Blower Unit Assembly
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Solution Overview
Problem
Existing CPAP devices face challenges in reliably coupling the blower unit and humidification unit due to unclear insertion force and distance requirements, leading to unstable coupling and assembly issues.
Innovation Solution
A respiratory blowing device design featuring a rotating body that allows the blower unit to be detachably coupled in a direction intersecting its rotation axis, with ancillary portions assisting attachment and a damper to buffer movement impacts, ensuring stable coupling between the blower and base units.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the blower unit is inserted into the first coupling port by holding with one hand while holding the coupling assembly with the other hand, then the coupling operation can be performed, but it is not easy to intuitively understand the required force and distance, leading to unstable coupling
Solution Approach 1:
The guide portion is provided in advance on the coupling assembly to guide the insertion of the blower unit. This preliminary structural arrangement allows the user to naturally follow the guidance during assembly, eliminating the need to estimate force and distance, thereby ensuring reliable coupling while maintaining ease of operation.
2Ease of manufacture
If the blower unit and humidification unit are directly inserted and assembled, then the assembly process can be performed, but the same problem of unstable coupling occurs due to unclear insertion requirements
Solution Approach 1:
The guide portion is locally provided at the specific insertion location of the coupling assembly. This localized guidance structure ensures that the blower unit is inserted correctly at the critical coupling interface, maintaining manufacturing simplicity while improving coupling reliability.
Data Source
AI summary
The respiratory blowing device is provided with a first unit including a first housing and a second unit including a rotating body and a second housing. The first housing includes a first outlet, the rotating body includes a first coupling port and a first coupling path, and the second housing includes a first inlet and a second outlet. The rotating body is configured to rotate between a first position and a second position. At the first position, the first outlet is coupled to the first coupling port in a state that the first housing and the second housing are separated from each other. At the second position, the first housing is attached to the second housing by the rotation of the first housing to approach the second housing in a state that the first outlet is coupled to the first coupling port.