Rotating Module Fastening Unit for Secure Respirator Air Supply
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Solution Overview
Problem
Existing respiratory protection systems for workers in paint booths face challenges in easy assembly and disassembly of air treatment modules, which complicates health protection and user-friendliness while also increasing production complexity for manufacturers.
Innovation Solution
A fastening unit with a modular design that allows for simple and reliable attachment and detachment of air treatment modules on a waist or hip belt, featuring a mechanism with rotating sub-components and locking grooves for secure positioning and easy module exchange.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If modules are made detachable for easy assembly and disassembly, then ease of operation and production simplicity improve, but connection reliability and security may deteriorate
Solution Approach 1:
The fastening unit employs a dynamic locking mechanism where the second sub-component can rotate relative to the first sub-component through a predetermined angle (less than 180 degrees). This rotation enables the locking pins to engage with different locking grooves, providing both easy attachment/detachment and secure connection. The dynamic movement allows the system to transition between locked and unlocked states reliably.
Solution Approach 2:
The fastening unit is divided into two separate sub-components: a first sub-component with locking grooves and a second sub-component with locking pins. This segmentation allows independent optimization of each part - the first sub-component provides stable mounting points while the second sub-component provides the locking mechanism. The modular design facilitates easy assembly and disassembly while maintaining connection reliability through the coordinated interaction of these segmented parts.
2Adaptability or versatility
If multiple locking positions are provided for adjustable positioning, then adaptability improves, but device complexity increases
Solution Approach 1:
The fastening mechanism utilizes angular/rotational dimension to achieve multiple locking positions. Instead of adding multiple linear adjustment mechanisms, the second sub-component rotates around the central through hole, allowing locking pins to engage with locking grooves at different angular positions. This dimensional approach provides adjustable positioning (at least three different positions) while keeping the mechanism relatively simple.
Solution Approach 2:
The first sub-component serves multiple functions: it provides the central through hole for screw passage, contains multiple locking grooves for different positioning angles, and defines the rotational movement path. The second sub-component similarly serves multiple functions with its locking pins, rotation capability, and engagement mechanism. This multi-functionality reduces the need for separate components for each feature, thereby reducing overall device complexity.
Data Source
Figure 1A~1B
Figure 2A
Figure 2B
AI summary
The invention relates to a fastening unit (100), in particular a fastening unit for modules which are intended to supply a user of a breathing mask or breathing hood with breathable air, and to such modules. The fastening unit is characterised in that it is designed to secure one module relative to another module, and in that it has a first component part (1) for assembly with the other module and a second component part (2) for assembly with the module, wherein the second component part (2) is rotatable, by means of the first component part (1), about a predetermined angle relative to the first component part (1); and first and second subcomponents (10, 20) within the region of the defined angle can engage with each other in a plurality of positions.