Spring Link Breathing Bag Plate System with Rotating Fastening Element

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Solution Overview

Problem

The existing spring bridge-breathing bag plate systems in circulatory breathing apparatuses are complex and time-consuming to assemble and disassemble, especially for cleaning and disinfection, due to their design and limited space, leading to frequent component defects and difficulty in accessing the breathing bag for maintenance.

Innovation Solution

A spring bridge with a rotating or sliding fastening element that allows easy pivoting or sliding from a working position to an open position, enabling quick access to the breathing bag for maintenance, and a locking device to secure the breathing bag plate during operation, facilitating easy assembly and disassembly.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Stability of the object's composition

If the spring bridge is firmly non-detachably connected to the housing, then the structural stability and support function is improved, but the ease of access to the breathing bag for cleaning and maintenance deteriorates

Engineering Contradiction:
Improvestructural stabilityVSAvoidease of access
Core Design Contradiction:
Stability of the object's compositionVSEase of operation

Solution Approach 1:

The spring bridge is designed with a rotating fastening element that allows it to pivot between a working position (providing structural stability) and an open position (providing access to the breathing bag). This dynamic design resolves the contradiction by allowing the spring bridge to change its state based on operational needs.

Inventive Principle:
Principle #15Dynamics

2Ease of repair

If the spring bridge is designed for easy removal and installation, then the ease of maintenance is improved, but the structural stability and support function deteriorates

Engineering Contradiction:
Improveease of maintenanceVSAvoidstructural stability
Core Design Contradiction:
Ease of repairVSStability of the object's composition

Solution Approach 1:

The rotating fastening element enables the spring bridge to be easily positioned into the working state for stable operation and easily rotated to the open state for maintenance, maintaining both ease of maintenance and structural stability through a single dynamic mechanism.

Inventive Principle:
Principle #15Dynamics

3Ease of operation

If the breathing bag plate is detachably attached to the breathing bag, then the ease of cleaning and disinfection is improved, but the reliability of the connection deteriorates

Engineering Contradiction:
Improveease of cleaningVSAvoidconnection reliability
Core Design Contradiction:
Ease of operationVSReliability

Solution Approach 1:

The breathing bag plate is designed as a separate, detachable component from the breathing bag, allowing easy separation for cleaning while maintaining a reliable connection during operation through the spring bridge mechanism that provides controlled attachment and detachment.

Inventive Principle:
Principle #1Segmentation

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

This design simplifies the assembly and disassembly of the breathing bag, reduces component damage, and enhances maintenance accessibility, allowing for quicker preparation and reuse of the respirator, especially in emergency situations.

Implementation Method 1

The spring force acting on the breathing bag plate and thus on the breathing bag surface creates a constant overpressure inside the gas-enclosure envelope

Methodology Applied
Scientific EffectElasticity: Elasticity

Implementation Method 2

The at least one fastening element is a rotating element and/or sliding element for rotating and/or sliding the spring bridge on and relative to the closed-circuit breathing apparatus

Methodology Applied
Scientific EffectRotation:

Implementation Method 3

The at least one fastening element is a rotating element and/or sliding element for rotating and/or sliding the spring bridge on and relative to the closed-circuit breathing apparatus

Methodology Applied
Scientific EffectFriction: Friction

Data Source

PatentEP3723868B1Spring link for a spring link breathing bag plate system of a closed-circuit breathing apparatus, spring link breathing bag plate system and closed-circuit breathing apparatus
Publication Date: 2025.01.15 DRAGER SAFETY AG & CO KAAA
  • EP3723868B1 patent drawingFigure 1
  • EP3723868B1 patent drawingFigure 2~3
  • EP3723868B1 patent drawingFigure 4~5

AI summary

The present invention relates to a spring link (40) for a spring link breathing bag plate system (80) of a closed-circuit breathing apparatus (100), having a spring link carrier (42) for arrangement of at least one spring element (82) of a spring link breathing bag plate system (80) and having at least one fastening element (44) for holding the spring link (40) on the closed-circuit breathing apparatus (100), wherein the at least one fastening element (44) is a rotating element and/or sliding element for moving the spring link carrier (42) in a rotational or sliding manner on and relative to the closed-circuit breathing apparatus (100). The invention also relates to a spring link breathing bag plate system (80) for a closed-circuit breathing apparatus (100) and to a closed-circuit breathing apparatus (100).