Cutting Roller Rollover Protection System
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing rollover protection systems for motor vehicles rely on deformation elements with spike-shaped breaking elements that require complex adhesive bonding and are not optimally designed for different vehicle body shapes, leading to inefficiencies in impact absorption and space utilization.
Innovation Solution
A rollover protection system featuring a deformation crossbar with a cutting roller breaking element that provides improved rigidity and a simpler connection method, allowing for adaptable attachment to various vehicle body contours, enabling controlled destruction of body components without the need for complex bonding, and utilizing a disk-shaped breaking element that can be concealed and space-efficiently designed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a spike-shaped breaking element is used, then the impact effect is concentrated at a point, but the connection requires complex adhesive bonding and the element is not adaptable to different vehicle body shapes
Solution Approach 1:
The patent inverts the conventional spike shape into a roller shape. Instead of a point contact that requires precise positioning and complex bonding, the roller provides linear contact along its circumference. This inversion allows the breaking element to be securely attached via simple frictional or interlocking connection while maintaining effective impact distribution.
Solution Approach 2:
The patent changes the geometric parameters of the breaking element from a three-dimensional spike to a two-dimensional roller with circular cross-section. This parameter change transforms the contact from point-like to linear, enabling simpler attachment methods while preserving the concentrated impact effect through the roller's sharp cutting or breaking edge.
2Strength
If a spike-shaped breaking element is used, then the impact effect is concentrated, but the element requires significant space and cannot be easily concealed
Solution Approach 1:
The patent applies spheroidality by designing the breaking element as a roller with a circular cross-section. This curved geometry allows the element to be compact and easily concealed within the deformation element structure, while the circular shape distributes the impact effect linearly along the contact region rather than requiring a large spatial footprint.
3Device complexity
If a cutting roller breaking element is used, then the connection is simpler and rigidity is improved, but the attachment location must be precisely positioned for optimal performance
Solution Approach 1:
The patent segments the contact function along the roller's circumference rather than concentrating it at a single point. This segmentation allows the roller to be attached at various locations on the deformation element while still providing effective breaking action, as the linear contact region compensates for positioning variations.
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 cutting roller breaking element effectively absorbs impact forces, allowing for controlled destruction of vehicle components before the deformation crossbar engages, enhancing the rollover protection system's efficiency and adaptability across different vehicle body types while minimizing space and complexity.
Implementation Method 1
The cutting roller has greater rigidity than the breaking element of the prior art, and can have a simpler connection to the rollover protection. A breaking element in the form of a cutting roller can be attached at different regions to the deformation element.
Implementation Method 2
The breaking element may be held on the deformation element with the aid of a frictional and/or interlocking connection to provide a simple connection in comparison to the complicated adhesive bonding of the breaking element known from the prior art spike- or pin-shaped breaking element.
Implementation Method 3
The connection can be realized, for example, with the aid of a screw, a bolt or a rivet.
Implementation Method 4
The breaking element may have a sharp cutting or breaking edge for reliable destruction of the body component in a simple manner. The body component is destroyed before the deformation crossbar comes into contact with the body component.
Data Source
AI summary
A rollover protection system for a motor vehicle has a profiled strut (3) extending in the direction of a vertical axis (6) of the vehicle, and a deformation element (4) held at a first end (9) of the profiled strut (3). The first end (9) is formed facing away from a vehicle floor of the motor vehicle, and the deformation element (4) has a first outer surface (10) facing away from the profiled strut (3) to form an impact surface. The deformation element (4) has a breaking element (11) in the form of a cutting roller.