Vehicle Partition Wall Inclining Surface for Door Security
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Solution Overview
Problem
In vehicle interiors, side collision loads can cause partition wall members to bulge and potentially open rear doors due to contact with inside handles, which is a safety and security concern.
Innovation Solution
A vehicle interior structure with a partition wall member extending between the driver's and rear passenger's seats, featuring an inclining surface portion that deforms towards the vehicle front side during a side collision, preventing contact with the inside handle and thus preventing the door from opening.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the inside handle is disposed close to the vehicle outer end portion of the partition wall member, then the door can be easily operated, but the door may be opened unintentionally during side collision
Solution Approach 1:
The partition wall member is designed with an inclining surface portion that proactively deflects collision loads away from the inside handle before contact can occur. This preliminary defensive geometry prevents the harmful action (door opening) from happening in the first place, rather than reacting after the handle is contacted.
Solution Approach 2:
The inclining surface portion acts as an intermediary element between the collision load and the inside handle. It intercepts and redirects the force through a controlled deflection path, preventing direct transmission of collision force to the handle mechanism.
2Strength
If the partition wall member is made rigid to prevent deformation, then structural strength is improved, but the inside handle may contact during side collision
Solution Approach 1:
The partition wall member employs different structural characteristics in different regions: the inclining surface portion is designed with specific geometric properties to deflect loads, while other portions maintain rigidity for overall structural strength. This localized differentiation allows simultaneous achievement of strength and collision protection.
Solution Approach 2:
The partition wall member transitions from a completely rigid structure to one with controlled dynamic response. The inclining surface portion is designed to deflect in a predictable manner during collision, converting static rigidity into dynamic load management that protects the handle.
3Reliability
If the inside handle is disposed far from the vehicle outer end portion, then collision contact is prevented, but door operation becomes difficult
Solution Approach 1:
Rather than moving the handle away from the optimal operating position, the solution preemptively defends the handle location by designing the inclining surface portion to deflect collision loads before they can reach the handle, allowing the handle to remain in its ergonomically optimal position.
Data Source
AI summary
A vehicle interior structure has a driver's seat disposed inside a cabin, a rear passenger's seat disposed on a vehicle rear side of the driver's seat inside the cabin, a partition wall member extending in a vehicle width direction between the driver's seat and the rear passenger's seat, and an inside handle for opening that opens a door on a side of the rear passenger's seat. The inside handle is set at a position rearward of and close to a vehicle outer end portion of the partition wall member in the vehicle width direction. The partition wall member includes an inclining surface portion inclining such that the inclining surface portion becomes closer to a vehicle front side as extending toward a vehicle center from the vehicle outer end portion.