Vehicle Door Reinforcing Device with Multi-Arm Structure
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Solution Overview
Problem
Existing add-on vehicle parts, such as doors, face challenges in achieving a structurally simple and lightweight design with effective reinforcing and damping properties to enhance impact protection and reduce noise emissions from vibrations.
Innovation Solution
A reinforcing device with multiple arms is used, featuring a force-fitting or form-fitting connection to reinforced portions, allowing for optimal positioning and reduced material usage, combined with a damping material like a butyl layer to minimize noise and enhance rigidity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a large holding plate extending over the full area is used for reinforcement, then impact protection is improved, but weight and structural complexity increase
Solution Approach 1:
The reinforcing device is divided into multiple individual arms (at least two arms) that connect the reinforced portions, replacing the conventional single large holding plate. This segmentation allows the reinforcing function to be distributed across multiple smaller components, reducing overall material usage and weight while maintaining structural effectiveness.
Solution Approach 2:
The invention extracts only the essential reinforcing function from the large holding plate, implementing it through minimal necessary elements (multiple arms). This extraction removes unnecessary material from the full-area plate design, achieving weight reduction while preserving the core reinforcement capability.
2Stability of the object's composition
If a large holding plate is used for reinforcement, then structural stability is improved, but device complexity increases
Solution Approach 1:
The reinforcing device is segmented into multiple independent arms that can be individually positioned and connected to reinforced portions. This segmentation simplifies the overall structure compared to a monolithic large plate, as each arm can be optimized independently and the assembly becomes more modular and manageable.
Solution Approach 2:
The invention transitions from a two-dimensional large plate structure to a three-dimensional multi-arm configuration. This dimensional change allows the arms to be positioned at optimal locations and orientations to provide reinforcement, creating a more efficient spatial arrangement that reduces complexity.
3Object-generated harmful factors
If material is applied to the reinforcing device for damping, then vibration damping is improved, but weight increases
Solution Approach 1:
Damping material is applied locally to specific regions of the reinforcing device arms rather than covering the entire structure. This localized application provides vibration damping where most needed while minimizing additional weight, as the material is concentrated in strategic locations rather than distributed across the whole component.
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 solution provides a lightweight, rigid, and noise-reducing add-on part with improved impact protection and occupant safety by efficiently distributing forces and damping vibrations, while maintaining a compact design.
Implementation Method 1
A material having a damping effect or a permanently elastic material may be applied to the reinforcing device. The application of this material to the reinforcing device provides durable prevention of vibration related noise.
Implementation Method 2
an end region of each of the arms of the reinforcing device is connected in a force-fitting and/or form-fitting manner to the reinforced portions
Data Source
AI summary
An add-on part (1) of a vehicle body, such as a door (1) or tailgate, has interconnected inner and outer parts (2, 4) and reinforced portions (5, 6) and a reinforcing device (7) connecting said reinforced portions (5, 6). The reinforcing device (7) has arms (8, 9, 18, 19), and, in the region of the ends of the arms (8, 9, 18, 19), the reinforcing device (7) is connected in a force-fitting and/or form-fitting manner to the reinforced portions (5, 6). Such an add-on part, while having a structurally simple design and relatively low weight, ensures particularly good stiffening properties.