Sliding Door B-Pillar Latch for Oblique Impact Retention
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing vehicle door systems fail to securely latch sliding doors to the B-pillar during oblique external impacts, as the catchment wedge and hook mechanisms are not effective in maintaining the door's position during deformation of the B-pillar.
Innovation Solution
A securing system comprising a securing hook on the sliding door and a catchment claw within the B-pillar, which engages behind a T-shaped retaining element formed by the securing hook's crosspiece, ensuring the sliding door remains locked to the B-pillar through curved gripping fingers during impacts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a catchment wedge and hook mechanism is used for latching the sliding door, then the door can be locked in normal operation, but the mechanism fails to securely latch the door during oblique external impacts causing the door to open
Solution Approach 1:
The catchment claw is designed to be movable relative to the B-pillar, transitioning from a retracted position during normal operation to an engaged position during impact. The claw can move along the inner wall of the B-pillar and rotate to engage behind the crosspiece of the securing hook, providing dynamic response to impact forces while maintaining normal door operation
Solution Approach 2:
The securing hook is designed with a T-shaped crosspiece that preliminarily positions the engagement point for the catchment claw. The crosspiece protrudes into the path of the catchment claw, preparing the geometric configuration for impact engagement before the actual impact occurs, ensuring immediate and reliable latching when impact forces are applied
2Reliability
If the catchment claw is positioned to engage the securing hook during impact, then the door remains locked during deformation, but the mechanism becomes more complex
Solution Approach 1:
The securing hook and catchment claw are integrated into a unified securing system where the hook is attached to the sliding door and the claw is attached to the B-pillar. These two components work together as a combined latching mechanism, merging the function of impact detection, energy absorption, and door retention into a single coordinated system rather than separate mechanisms
Solution Approach 2:
The catchment claw is positioned at a specific location on the inner wall of the B-pillar where it can optimally engage the crosspiece of the securing hook. The claw's geometry and positioning are locally optimized for impact engagement, with curved gripping fingers that match the shape of the crosspiece, providing reliable latching without requiring complex mechanisms throughout the entire door system
Data Source
AI summary
A vehicle door system includes at least one sliding door which is arranged on the side and can be displaced out from the B-pillar. A securing system is provided for latching the sliding door on the B-pillar in the case of an external impact against the B-pillar occurring obliquely from the front. The securing system can block the at least one sliding door from opening in response to the external impact. The securing system includes a catchment claw that engages a securing hook to hold the at least one sliding door to the B-pillar.