Door Edge Protection Profile with Eccentric Lever and Bent Holding Rod
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing door edge protection devices for motor vehicle doors are limited in their ability to effectively protect the curved edge from bumps and obstacles due to their design, which often requires a large space and cannot adapt to the edge contour, leading to incomplete protection, especially at sharp corners.
Innovation Solution
A door edge protection device with a movable edge protection profile guided at two points in the longitudinal direction of the door, driven by an eccentric lever and a bent holding rod, allowing for a space-saving and adaptive movement to surround the entire door edge, including sharp corners.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the edge protection body is designed to rotate approximately 180° about an axis parallel to the door edge, then the protection device can be simple in structure, but it cannot protect the entire curved door edge effectively
Solution Approach 1:
The edge protection profile is designed to execute a complex motion sequence combining translation and rotation, rather than simple rotation. The profile translates away from the door edge first, then rotates, and finally translates back to surround the door edge. This dynamic motion sequence enables the protection profile to adapt to curved door edges while maintaining a relatively simple mechanical structure.
2Adaptability or versatility
If the edge protection body is designed to surround the entire door edge, then complete protection is achieved, but the device requires a large amount of space
Solution Approach 1:
The guidance mechanism is segmented into two independent systems: a linear guide that constrains translational motion and a rotary guide that enables rotation. This segmentation allows the edge protection profile to achieve complex motion in a space-efficient manner, as each guide system handles a specific aspect of the motion independently.
Solution Approach 2:
The edge protection profile utilizes multiple degrees of freedom by combining translation along a linear guide with rotation about a rotary guide. This two-dimensional motion control enables the profile to surround the entire door edge effectively while minimizing the space required for the mechanism.
3Ease of manufacture
If the edge protection body uses a linear guide for mounting, then the mounting is simple, but the intermediate lever can execute only a pivoting movement of less than 180°
Solution Approach 1:
The device merges a linear guide system with a rotary guide system to achieve the desired pivoting range. The linear guide maintains mounting simplicity while the rotary guide extends the pivoting capability beyond 180°, enabling the edge protection profile to surround the entire door edge effectively.
Data Source
AI summary
A door edge protection device for a motor vehicle door, with a door edge protection profile (5) which is guided movably with respect to the door at at least two points lying one behind the other in the longitudinal direction of the door, the door edge protection profile (5) being driven via an eccentric lever (7) mounted rotatably in the door and the door edge protection profile (5) having a holding rod (6) which is guided by a linear guide (10) which is fixed in the door, the holding rod (6) being bent in the region of the linear guide (8, 9; 11).