Skull Mounting System with Elastic Upper Headband
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Solution Overview
Problem
Existing skull mounting systems for headgear, such as respirator hoods, often cause discomfort due to cutting-in edges and pressure spots, and fail to effectively distribute forces across the head, leading to reduced wearing comfort and inadequate fit.
Innovation Solution
A skull mounting system featuring a front and rear headband with lower elasticity, and an upper headband with higher elasticity and flexibility, made from materials like polyethersulfone and elastodiene, which cushions forces and adjusts to the head shape, combined with swivel joints and length adjustments for optimal fit and force distribution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the headband uses a material with limited elasticity (as in prior art), then the structure provides stability and support, but it causes cutting-in edges and pressure spots that reduce wearing comfort
Solution Approach 1:
The headband is divided into multiple segments with different elasticity characteristics. The front headband and rear headband use materials with limited elasticity for stability, while the upper headband uses a rubbery material with higher elasticity to cushion forces and prevent pressure spots. This segmentation allows each part to perform its specific function optimally.
Solution Approach 2:
Different regions of the headband are assigned different material properties. The upper headband that contacts the top of the head uses a rubbery material (71% polyethersulfone and 29% elastodiene) with elongation above 50% to provide cushioning, while the front and rear headbands use more rigid materials for structural support. This local differentiation of material quality resolves the contradiction between stability and comfort.
2Object-affected harmful factors
If the upper headband uses higher elasticity material, then wearing comfort is improved and forces are cushioned, but the overall structural rigidity may be reduced
Solution Approach 1:
The headband system is segmented into rigid portions (front and rear headbands) and a flexible portion (upper headband). This allows the flexible upper section to absorb forces and improve comfort while the rigid front and rear sections maintain overall structural integrity and support.
Solution Approach 2:
The rubbery material with higher elasticity is applied locally only to the upper headband section that requires cushioning, while the front and rear headbands maintain limited elasticity for structural strength. This localized application of elasticity preserves overall structural rigidity while providing comfort where needed.
3Duration of action of stationary object
If the headband material is made more wear-resistant, then durability is improved, but the material becomes less flexible and more rigid
Solution Approach 1:
The headband is segmented into different material zones: wear-resistant materials (polyamide, fiber-reinforced plastic) are used in the front and rear headbands where durability is critical, while a more flexible rubbery material is used in the upper headband where adaptability to head shape and movement is required.
Solution Approach 2:
Different material properties are assigned to different locations based on functional requirements. The front and rear headbands use hard, wear-resistant materials with Shore hardness between 5-120 Shore-D, while the upper headband uses a softer, more flexible rubbery material that can adapt to head movements and contours.
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
The system significantly enhances wearing comfort by reducing pressure points, preventing cutting-in, and ensuring a secure, adjustable fit, even during prolonged use, by effectively distributing forces and accommodating head movement.
Implementation Method 1
the upper headband has higher elasticity than the front and rear headbands
Implementation Method 2
It is particularly advantageous if the upper headband consists of a rubbery material. The forces that occur, for example, by movement of the wearer's head, can be cushioned with particular comfort by a rubber-elastic headband.
Data Source
AI summary
A skull mounting system for headgear, preferably a respirator hood, includes a headband with a front headband and a rear headband. The front headband extends around at least the front of the head of the wearer and the rear headband is found on the back of the head of the wearer, and at least one upper headband is provided that extends over the top of the head of the wearer. The upper headband has higher elasticity than the front and rear headbands.