U-Shaped Deformable Interface for Vehicle Step Impact Protection
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Solution Overview
Problem
Existing vehicle running boards are prone to damage from shocks and side impacts, requiring complete replacement rather than repairable components.
Innovation Solution
A modular, deformable U-shaped interface is mounted on the vehicle, with a central part having an inclined face, allowing the step to absorb impacts and obstacles, and featuring a cover to prevent use as a step, facilitating repair by replacing only the damaged part.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a fixed running board is used, then it provides stable support, but it is damaged by impacts and requires complete replacement
Solution Approach 1:
The running board system is divided into separate components: a fixed support structure and a removable interface element. The interface can be detached and replaced independently when damaged, while the main support structure remains intact. This segmentation allows partial replacement rather than complete replacement of the running board.
Solution Approach 2:
The interface element is designed as a sacrificial, replaceable component that can be easily manufactured and replaced at low cost. When the interface sustains damage from impacts, it can be discarded and replaced with a new one, rather than replacing the entire expensive running board assembly.
2Strength
If a rigid interface is used, then it provides strong connection, but it cannot absorb shocks and suffers damage
Solution Approach 1:
The interface element serves as a pre-positioned cushioning component designed to absorb impacts before they reach the main support structure. It is positioned to first contact obstacles and deform under impact forces, protecting the stronger but more critical support structure from damage.
Solution Approach 2:
The interface is designed as a sacrificial element that absorbs impact energy through deformation and can be replaced when damaged. It acts as a disposable shock absorber that protects the permanent support structure from harmful impacts.
3Ease of repair
If the interface is made removable, then it facilitates repair, but it reduces structural stability
Solution Approach 1:
The system is segmented into a permanent support structure and a removable interface. The support structure maintains structural stability and remains fixed, while the interface provides the necessary connection functionality and can be removed for replacement. This segmentation allows repairability without compromising the stability of the main structure.
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 effectively absorbs lateral and vertical shocks, preventing complete running board replacement and enhancing maintainability by allowing deformation and sliding of obstacles, thus reducing maintenance costs and extending the lifespan of the running board.
Implementation Method 1
The inclined face of the U allows the obstacle to slide under the vehicle as it moves forward
Implementation Method 2
the interface (4) has two edges (40) and (41) perpendicular to a central portion (42)... the assembly forms a U shape... the interface will deform vertically
Data Source
Figure 1~2
Figure 3~4
Figure 5~6
AI summary
[The invention relates to a device for protecting a vehicle step comprising a deformable interface (4) and a step (1) fixed on the interface (4) it is characterized in that the interface (4) is U-shaped and the central part (42) of the U has an inclined face (420).