Composite Helmet Shroud Assembly for Lightweight Secure Mounting
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Solution Overview
Problem
Existing helmet shrouds lack an efficient and lightweight design for securely mounting electronic or optoelectronic imaging devices, often compromising on strength and adaptability to various helmet configurations.
Innovation Solution
A shroud assembly comprising a polymer frame overmolded onto a metal or metal alloy insert, featuring a recessed interface for removable attachment of accessory mounts, providing enhanced strength, weight reduction, and adaptability to helmet designs, with retention features minimizing axial rotation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If traditional solid metal shrouds are used for mounting accessory devices, then strength and security are improved, but weight increases significantly
Solution Approach 1:
The shroud assembly uses a composite structure combining a polymer frame with a metal insert. The polymer frame provides lightweight structure while the metal insert (stainless steel, aluminum alloy, or titanium) provides localized strength at the mounting interface. This composite approach achieves the strength-to-weight ratio improvements of over 25% compared to solid metal shrouds.
2Ease of manufacture
If a standardized mounting interface is used, then ease of manufacture is improved, but adaptability to various helmet configurations decreases
Solution Approach 1:
The shroud assembly incorporates a standardized accessory mounting interface (such as MIL-STD-1913 Picatinny rail or Weaver rail) that can accommodate multiple types of accessory devices. The interface is designed to work with various helmet configurations including different headgear shapes and sizes, providing universal compatibility while maintaining ease of manufacture through standardization.
Solution Approach 2:
The shroud assembly includes adjustable positioning features that allow the mounting interface to be repositioned or reconfigured to adapt to different helmet shapes and sizes. This dynamic adaptability enables the same standardized interface to accommodate various helmet configurations without requiring custom manufacturing for each helmet type.
3Ease of operation
If accessory devices are mounted in front of user's eyes, then functionality is improved, but field of view may be restricted
Solution Approach 1:
The shroud assembly is designed with a profile that positions the accessory mounting interface in a location and orientation that minimizes obstruction of the user's field of view. The interface extends laterally or vertically rather than directly forward, allowing accessory devices to be mounted without blocking the user's forward vision. This dimensional arrangement enables both functionality and field of view to be optimized simultaneously.
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 shroud assembly achieves a superior strength-to-weight ratio, reduces weight by over 25% compared to prior art, and securely mounts devices with minimal axial rotation, adapting to different helmet patterns.
Implementation Method 1
The polymer frame is overmolded onto the insert such that the polymer frame and the insert cooperate to form an interface for the removable attachment of an accessory mount
Data Source
AI summary
The shroud assembly is configured for attachment to the front of a helmet or other headgear. The shroud assembly includes an interface for the removable attachment of an accessory mount used to couple an electronic or optoelectronic imaging device to the headgear. An example shroud assembly comprises a polymer frame and an insert formed of a metal or metal alloy. The polymer frame is overmolded onto the insert such that the polymer frame and the insert cooperate to form an interface for the removable attachment of an accessory mount. The interface includes an upper recess and a lower recess. The upper recess is configured to act as a bearing surface for an engaging latch member of the accessory mount, and the lower recess is configured to act as a bearing surface for another engaging latch member of the accessory mount.