Rotatable PAPR Hose Connector Assembly for Leak-Proof Housing Attachment
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Solution Overview
Problem
Conventional powered air purifying respirator (PAPR) connection mechanisms, such as threaded joints and bayonet systems, face issues with complex assembly, air leakage, and increased manufacturing costs due to the need for adhesives and accessories.
Innovation Solution
A PAPR connector with a rotatable tab and flange design that secures to a housing using an attachment mechanism, eliminating the need for adhesives and simplifying assembly, while providing a secure and leak-proof connection capable of withstanding significant forces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If threaded joints or bayonet systems are used for PAPR connector assembly, then connection strength is improved, but device complexity and manufacturing cost increase due to need for adhesives and accessories
Solution Approach 1:
The connector is divided into distinct functional elements: a tab portion for insertion and rotation, a flange portion for sealing and attachment, and an attachment mechanism. This segmentation allows each part to perform its specific function efficiently without requiring complex additional components or adhesives.
Solution Approach 2:
The attachment mechanism is designed to be self-contained and self-service, integrating the attachment function directly into the connector structure. The mechanism includes a body with a recess that receives the tab, and a resilient member that provides automatic engagement and retention, eliminating the need for separate adhesives or complex assembly accessories.
2Reliability
If threaded joints or bayonet systems with adhesives are used, then connection reliability is improved, but assembly time and manufacturing cost increase
Solution Approach 1:
The resilient member is pre-loaded within the attachment mechanism body during manufacturing, creating a ready-to-engagement state. When the tab is inserted and rotated, the pre-loaded resilient member automatically engages the flange, providing immediate and reliable connection without requiring additional assembly steps or adhesive application time.
3Strength
If conventional connection mechanisms are used, then connection strength is achieved, but manufacturing cost increases due to adhesives and accessories
Solution Approach 1:
The attachment mechanism combines multiple functions into a single integrated component: the body with recess provides structural support and alignment, while the resilient member provides both sealing and retention functions. This merging eliminates the need for separate adhesives, gaskets, and fasteners, reducing part count and manufacturing complexity.
Data Source
Figure 1A~1B
Figure 2
Figure 3A~3B
AI summary
Embodiments relate generally to a connector for a powered air-purifying respirator ("PAPR"). A powered air purifying respirator (PAPR) connector may comprise a tab extending from the PAPR connector, wherein the tab is positioned to contact an inner surface of a housing; and a flange extending from the PAPR connector, wherein the flange is configured to receive an attachment mechanism, wherein the attachment mechanism is configured to attach the PAPR connector to the housing; wherein the PAPR connector is rotatable within the housing.