Helmet Strap Friction Lock for Stable Fit
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Solution Overview
Problem
Conventional sports helmets often fail to provide optimal wearing comfort and stability, leading to suboptimal fit and inadequate safety performance during use.
Innovation Solution
The helmet features a first webbing system with a displaceable coupling body and a fixing body that creates friction or clamping, allowing for adjustable and secure fit, with the coupling body automatically positioning for optimal comfort and safety, and includes a robust outer shell and shock-absorbing inner shell for enhanced protection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the webbing strap is completely fixed to prevent movement, then stability is improved, but wearing comfort deteriorates due to lack of adjustability
Solution Approach 1:
The retention system employs a dynamic design where the coupling body can move relative to the fixing body along the webbing strap. This movement capability allows the system to adapt to different head shapes and sizes, providing wearing comfort while maintaining stability through the controlled movement rather than complete fixation.
2Ease of operation
If the coupling body is completely movable for easy adjustment, then wearing comfort is improved, but stability deteriorates due to excessive movement
Solution Approach 1:
The system changes the parameter of movement restriction dynamically. The fixing body provides frictional engagement that allows limited movement for adjustment purposes, then maintains a stable position once adjusted. The coupling body can move along the webbing strap within controlled limits, providing adjustability while preventing excessive movement that would compromise stability.
3Reliability
If friction is increased between webbing and fixing body to prevent movement, then stability is improved, but ease of adjustment deteriorates
Solution Approach 1:
The fixing body is designed with specific local qualities that create frictional engagement at the contact points with the webbing strap. This friction is sufficient to prevent unwanted movement and maintain stability, yet the geometry and material properties allow the coupling body to be adjusted when needed. The local friction characteristics are optimized to balance stability and adjustability.
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 configuration ensures extremely high wearing comfort and safety, providing a stable fit and preventing relative movement between the webbing and fixing bodies, even when forces are not acting on the straps, thus enhancing the helmet's overall performance.
Implementation Method 1
Friction or clamping thus exists between the first webbing strap and the first fixing body, so that their movement relative to each other during use of the helmet is inhibited
Data Source
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AI summary
The invention relates to a helmet. Furthermore, the helmet has a first strap (5), which has a first and a second strap section (9, 10), fastened to a first side (4) of a helmet crown (2). The helmet furthermore has a first coupling body (6), which deflects the first strap (5) during use. The first coupling body (6) and the first strap (5) can be displaced relative to each other. The helmet furthermore comprises a first fastening body (7), arranged adjacent to the first coupling body (6) and through which the first strap (5) is guided and which exerts a clamping force on the first strap (5). The first fastening body (7) and the first strap (5) are displaceable relative to each other, despite the clamping force present there between. The first fastening body (7) and the first coupling body (6) are designed separately from each other. In addition, the helmet has a chin strap (8) which is connected to the first coupling body (6).