B-pillarless Door End Panel for Mold Removability
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Solution Overview
Problem
The existing vehicle door deep-drawing process is complicated by deformation-intensive regions that make material usage complex and removability from molds difficult, especially as interior depth increases, leading to undercuts that complicate the deep-drawing method.
Innovation Solution
Incorporating an end panel on one narrow side of the vehicle door, which is connected fixedly to the outer and inner panels, allowing for reduced deformation of the partial regions and enabling undercuts perpendicular to the larger side surfaces, thus simplifying the deep-drawing process and improving removability from molds.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the body panels are deep-drawn with increased interior depth to improve door rigidity and design freedom, then the structural strength and design versatility are improved, but the deformation complexity and difficulty of removal from molds increase
Solution Approach 1:
The door assembly is segmented into separate body panels (outer panel, inner panel) and a sealing system that can be independently manufactured and assembled. The sealing profile is integrated into the door assembly but can be separately molded and attached, allowing the main body panels to be deep-drawn to desired depths without the complexity of integrating severe undercuts into the mold design itself.
Solution Approach 2:
The sealing profile acts as an intermediary element between the body panels and the door opening. It provides the necessary sealing function while allowing the body panels to be manufactured with complex deep-drawn shapes including undercuts, since the sealing system can be separately molded and integrated into the door assembly after the panels are formed.
2Adaptability or versatility
If the body panels are deep-drawn with severe deformation to achieve desired cavity shape, then the design freedom and structural properties are improved, but the material complexity and processing difficulty increase
Solution Approach 1:
The sealing system is segmented from the body panels, allowing each component to be optimized independently. The body panels can be deep-drawn with severe deformation to achieve complex cavity shapes and design freedom, while the sealing profile can be separately molded with its own optimal geometry for sealing functionality, reducing overall manufacturing complexity.
Solution Approach 2:
The invention changes the manufacturing parameters by separating the deep-drawing process for body panels from the molding process for the sealing system. This allows different material properties, deformation rates, and molding techniques to be applied to each component according to its specific functional requirements, simplifying the overall manufacturing process despite complex design requirements.
3Reliability
If the sealing system is integrated into the door assembly to improve sealing efficiency, then the sealing performance is improved, but the construction complexity increases
Solution Approach 1:
The sealing profile is merged with the door assembly to ensure proper sealing contact and alignment with the door opening. The sealing system is integrated into the door structure, combining the sealing function with the door's structural components, which improves sealing reliability while maintaining relatively simple construction through standardized integration methods.
Data Source
AI summary
The invention relates to a vehicle door for closing a door opening provided in a vehicle frame, and to a vehicle door system with the vehicle door according to the invention. The vehicle door has body panels, an inner panel which, in the fitted position, faces the vehicle interior, and an outer panel which, in the fitted position, faces away from the vehicle interior, said panels being connected fixedly to each other and delimiting a cavity.With the proviso of providing a vehicle door of the type mentioned at the beginning, which can be produced in a less complicated manner, it is proposed that an end panel for delimiting the cavity is provided as a further body panel at least on one narrow side of the vehicle door, and that the end panel is connected fixedly laterally to the outer panel and the inner panel.