Vehicle Side Door Stay Damper Nesting in Trim Space
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Solution Overview
Problem
Existing side door structures in vehicles require seal members to prevent water and dust ingress, which increases material costs and complicates maintenance, while also potentially deteriorating passenger getting on/off properties due to the size and placement of stay dampers.
Innovation Solution
A side door structure with a recessed portion in the door inner that allows the stay damper to extend rearwardly from the hinge pillar to the door inner, eliminating the need for additional seal members and improving support rigidity, thereby maintaining passenger access without compromising water-proofing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the stay damper is arranged to extend through a penetration hole in the door inner, then the water-proofing is improved, but the penetration hole size must be large to accommodate the swinging motion, which increases the size of the seal member and deteriorates the getting on/off property
Solution Approach 1:
The stay damper is repositioned from extending through the door inner in the vehicle width direction to extending along the vehicle longitudinal direction within the door trim space. This dimensional change allows the damper to swing without interfering with the door inner opening, eliminating the need for large penetration holes and seal members, thus improving both water-proofing and getting on/off property.
Solution Approach 2:
The stay damper is nested within the door trim space, which is formed between the door inner and the door trim. This nesting arrangement allows the damper to be housed within the existing door structure without requiring additional seal members or compromising the water-proofing between the door inner and vehicle body.
2Reliability
If the stay damper is arranged to extend through a penetration hole in the door inner, then the water-proofing is improved, but the seal member size increases, which increases material costs and maintenance complexity
Solution Approach 1:
The stay damper is extracted from the door inner structure and repositioned to extend within the door trim space. This extraction eliminates the need for the damper to pass through the door inner, thereby removing the requirement for large seal members and reducing both material costs and maintenance complexity while preserving water-proofing.
Solution Approach 2:
The door trim space, which originally serves as an aesthetic and functional cover for the door inner, is repurposed to house the stay damper. This multi-functional use of the door trim space eliminates the need for separate seal members and penetration holes, reducing device complexity and cost while maintaining water-proofing.
3Reliability
If the stay damper is arranged at the lower portion of the side door, then the water-proofing is improved, but the getting on/off property deteriorates due to interference with passenger feet
Solution Approach 1:
The stay damper is repositioned from the lower portion of the side door to the door trim space, which is located in the upper portion of the door. This vertical dimensional change removes the damper from the path of passenger feet, eliminating interference with getting on/off while maintaining water-proofing through the door trim arrangement.
Solution Approach 2:
The stay damper is nested within the door trim space, which is positioned in the upper portion of the door away from the lower edge. This nesting arrangement allows the damper to function for water-proofing without interfering with passenger access, as it is housed within the trim structure rather than extending to the door lower edge.
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 allows for proper arrangement of the stay damper without additional seal members, enhancing the vehicle's getting on/off property and improving water-proofing without increasing material costs or maintenance complexity.
Implementation Method 1
a rod body which is inserted into the cylinder body so as to project from the cylinder body, wherein the rod body is configured to project from the cylinder body by a gas pressure sealed in the cylinder body
Data Source
AI summary
There are provided a hinge pillar having a closed-cross section extending in a vehicle vertical direction, a side door body comprising a door outer and a door inner, a door trim provided to cover the door inner from a cabin inside, and a stay damper arranged between the door inner and the door trim such that the stay damper extends rearwardly from a front end thereof which is attached to the hinge pillar and to a rear end thereof which is attached to the door inner.