Side Wall Rear Component Sliding Chamfer Door Unblocking
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Solution Overview
Problem
In the event of a rear-end accident, the side wall rear component of a passenger car may be displaced forward, causing mechanical stress that can block the vehicle door from opening due to outward movement over the rear side end portion of the vehicle door, which is unsafe and difficult to resolve with existing designs.
Innovation Solution
A side wall rear component with a sliding chamfer at its front side end portion, spaced further in the transverse direction than the rear side end, allows for plastic deformation and inward displacement over the vehicle door during an accident, ensuring the door can be opened by generating an inward transverse force through indirect contact with the door's sliding chamfer, without interfering with sealing joints or screw connections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the side wall rear component is designed with conventional flange configurations, then the door sealing and structural assembly are simplified, but the component may be pushed outward over the vehicle door during a rear-end accident, blocking door opening
Solution Approach 1:
The patent introduces a sliding chamfer with asymmetric spacing in the transverse direction, creating a geometric dimensioning solution that transforms the interaction between the side wall rear component and vehicle door. The chamfer's front side end portion is spaced further from the outer surface than the rear side end portion, establishing a controlled sliding path that redirects outward displacement into inward movement over the door, solving the door blocking problem through dimensional geometry rather than complex mechanical mechanisms.
Solution Approach 2:
The sliding chamfer is pre-configured with specific spacing relationships before the accident occurs. The front side end portion is deliberately positioned further from the outer surface than the rear side end portion, creating a predetermined geometric pathway that automatically guides the side wall rear component's movement inward over the door during displacement, eliminating the need for active control or post-accident intervention.
2Reliability
If slide-down chambers are designed to push the side wall rear component inward during displacement, then door blocking is prevented, but the sealing joint design between the side wall rear component and vehicle door is greatly interfered with
Solution Approach 1:
The patent extracts the door-blocking prevention function from the complex slide-down chamber mechanism and implements it through the geometric configuration of the sliding chamfer alone. By removing the need for intricate slide-down chamber structures, the sealing joint design between the side wall rear component and vehicle door is preserved, allowing for simpler manufacturing and assembly while maintaining the critical safety function of preventing door blocking.
3Reliability
If screw connections are designed to loosen above a specified force, then the side wall rear component can be released to allow door opening, but the car body service life and side wall rigidity are compromised
Solution Approach 1:
The patent converts the harmful effect of accident-induced displacement into a beneficial automatic door-unblocking mechanism. The sliding chamfer's geometric configuration transforms the outward push force during a rear-end accident into an inward sliding motion that actively prevents door blocking, eliminating the need for sacrificial screw connections that would compromise structural integrity during normal service while ensuring door openability after accidents.
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
This solution reliably prevents the side wall rear component from being pushed outward over the vehicle door, ensuring the door can be safely opened after a rear-end accident without compromising the car body's structural integrity or increasing weight and cost.
Implementation Method 1
the outer wall of the side wall rear component is first plastically deformed by means of physical contact with the rear side end portion of the vehicle door... Until an angled flange portion of the outer wall rests on the sliding chamfer
Implementation Method 2
Through the established indirect physical contact between the rear side end portion of the vehicle door and the outwardly oriented sliding chamfer via the flange portion of the outer wall in the event of further front side displacement... a transverse force is generated, which acts inwards
Data Source
AI summary
The invention relates to a side wall rear component (14) for a passenger vehicle (13), having at least one outer wall (4) and at least one wall reinforcement (15) reinforcing the outer wall (4) on the inner side (5) thereof. In order to ensure that a front-side end portion of the side wall rear component (14), which shifts on the front side in the event of a rear-end collision, reliably pushes on the inside via a rear-side end portion of a vehicle door (3), which is arranged on a front side with respect to the side wall rear component (14), at least one sliding slope (17) is arranged on a front-side end portion (16) of the wall reinforcement (15), the front-side end of which sliding slope is spaced apart in a transverse direction (Y) of the vehicle further from an outer surface (18), which forms a vehicle outer skin portion, of the outer wall (4) than a rear-side end of the sliding slope (17).