Vehicle Door Frame Weld Layout to Avoid Edge Interference
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Solution Overview
Problem
The proximity of the welded part between the upper frame and the pillar in vehicle door frames to the upper or lower edge of the upper frame leads to inconveniences such as increased manufacturing time and complexity due to interference with peripheral components, requiring accurate cutting or polishing of the weld bead.
Innovation Solution
A vehicle door frame design where the welded part is positioned with its upper and lower ends spaced away from the upper and lower edges of the upper frame, incorporating a frame molding with a gap and an intervenient object like a sponge or end cap to prevent interference, allowing the weld bead to extend obliquely and avoid peripheral components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the welded part is located close to the upper or lower edge of the upper frame, then the structural strength is improved, but the manufacturing complexity and time increase due to interference with peripheral components
Solution Approach 1:
The patent positions the welded part in a specific spatial relationship by spacing it from the upper and lower edges of the upper frame. This dimensional adjustment allows the weld bead to extend obliquely without interfering with peripheral components, thereby maintaining structural strength while reducing manufacturing complexity.
2Strength
If the welded part is located close to the upper or lower edge of the upper frame, then the structural strength is improved, but the manufacturing time increases due to accurate cutting or polishing requirements
Solution Approach 1:
The patent pre-plans the position of the welded part by specifying that it be spaced from the upper and lower edges of the upper frame. This preliminary positioning ensures that the weld bead will not interfere with peripheral components, eliminating the need for subsequent cutting or polishing operations and reducing manufacturing time.
3Ease of manufacture
If the welded part is spaced away from the upper and lower edges of the upper frame, then the manufacturing process is simplified, but the structural strength may be reduced
Solution Approach 1:
The patent optimizes the spacing parameters of the welded part from the upper and lower edges of the upper frame. By carefully selecting these dimensional parameters, the design achieves a balance where the weld bead can extend obliquely without interference (simplifying manufacturing) while still providing sufficient structural strength.
Data Source
AI summary
A vehicle door frame includes a pillar, a frame molding, and a welded part. The pillar has a first abutting surface and a first outer surface. The upper frame has a second abutting surface and a second outer surface. The frame molding extends along the upper frame to cover an outside of the upper frame in the lateral direction of a vehicle, and has an inner surface facing the first outer surface and the second outer surface with a gap. The welded part is located at a boundary between the first outer surface and the second outer surface, extends along the first abutting surface and the second abutting surface, faces the inner surface, and bonds the pillar and the upper frame together.