Armored Cabin Curved Side Walls Blast Deflection

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Solution Overview

Problem

Existing armored vehicle floor designs are vulnerable to shock and blast damage from explosions due to weak welding zones between metal plates, which cannot be adequately protected by conventional overprotections.

Innovation Solution

A vehicle cabin design featuring a floor with integral, curved side walls and a thick, folded aluminum protective plate that covers mobility means, reducing the need for multiple welded plates and enhancing structural integrity.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If multiple metal plates are assembled and welded to form the floor, then the floor can accommodate various organs and adapt to different volumes, but the welding zones create weak points that risk breaking under shock and blast

Engineering Contradiction:
Improvefloor adaptabilityVSAvoidfloor strength
Core Design Contradiction:
Adaptability or versatilityVSReliability

Solution Approach 1:

The patent applies curvature by forming the protective plate into a convex shape with a radius of curvature between 0.5 to 2 meters. This curved geometry eliminates the need for welding multiple flat plates together, as the convex plate can be contoured to accommodate various organ volumes while maintaining structural integrity throughout. The curvature distributes stress evenly across the plate surface, preventing the formation of weak welding zones that would be susceptible to blast damage.

Inventive Principle:
Principle #14Spheroidality (Curvature)

Solution Approach 2:

The invention merges the functions of multiple separate floor plates into a single integrated convex protective plate. This unified structure eliminates the welding joints between multiple plates while still providing the necessary adaptability to accommodate different organ volumes through its contoured geometry. The merging of these functions into one piece resolves the contradiction by removing the weak welding zones while preserving volume adaptation capabilities.

Inventive Principle:
Principle #5Merging (Combining)

2Object-affected harmful factors

If an overprotection is installed to attenuate shock and blast effects, then some protection is provided, but it cannot prevent rupture at welding zones with certainty

Engineering Contradiction:
Improveblast protectionVSAvoidfloor integrity
Core Design Contradiction:
Object-affected harmful factorsVSReliability

Solution Approach 1:

The convex shape of the protective plate with its specific radius of curvature (0.5 to 2 meters) provides superior blast protection compared to flat plates. The curved geometry naturally distributes and deflects blast waves and shock pressures across its surface, reducing concentrated stress points. This curvature-based protection mechanism works in conjunction with the overprotection system to provide enhanced reliability, preventing rupture at what would otherwise be vulnerable welding zones by eliminating them entirely.

Inventive Principle:
Principle #14Spheroidality (Curvature)

Solution Approach 2:

The convex protective plate acts as a pre-positioned cushioning element that absorbs and distributes blast energy before it reaches the floor structure. By installing this curved plate in advance, the system creates a protective barrier that attenuates shock and blast effects, working synergistically with the overprotection to prevent structural failure before it occurs.

Inventive Principle:
Principle #11Beforehand cushioning (Prior cushioning)

3Object-affected harmful factors

If a thick convex aluminum plate is used for protection, then protection is provided, but it does not cover mobility means and lacks concave side walls

Engineering Contradiction:
Improvevehicle protectionVSAvoidcoverage of mobility means
Core Design Contradiction:
Object-affected harmful factorsVSAdaptability or versatility

Solution Approach 1:

The patent implements nesting by integrating concave side walls that extend downward to surround and protect the mobility means (wheels or tracks). The convex protective plate forms the upper structure, while the concave side walls nest below it to enclose the mobility components. This nested arrangement provides comprehensive protection, covering both the cabin area and the mobility means, thereby enhancing the vehicle's overall adaptability and protection versatility.

Inventive Principle:
Principle #7Nested doll (Nesting)

Solution Approach 2:

The invention extends the protection structure into a third dimension by adding vertical concave side walls that descend from the convex plate to encompass the mobility means. This dimensional extension transforms the protection system from a two-dimensional floor plate into a three-dimensional protective enclosure, thereby covering both the cabin floor area and the underlying mobility components with a single integrated structure.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

Data Source

PatentEP2685205B1Armored cab for a vehicle
Publication Date: 2016.02.03 NEXTER SYST SA
  • EP2685205B1 patent drawingFigure 1~2
  • EP2685205B1 patent drawingFigure 3~4

AI summary

The invention relates to an armored vehicle cabin (2), comprising at least one floor (8) on which at least one side wall (2a, 2b) is fixed. This cabin (2) is characterized in that the side wall is formed by a protective plate having at least one curved area (13a, 13b) forming a channel covering at least partially a means of mobility (4).