Door Frame Column Welding Gap Design
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Solution Overview
Problem
The existing door frame column welding process lacks dimensional accuracy due to the contact between the end face of the inner member and the outer member, leading to poor vehicle width direction dimensions.
Innovation Solution
A door frame column design where the outer member includes a base portion and a first bent portion extending inward, and the inner member has a side portion facing the base and bent portion, allowing a gap between the base and side portions for improved welding accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the end face of the inner member comes into contact with the outer member during welding, then the welding process is simplified, but the dimensional accuracy of the column in the vehicle width direction deteriorates
Solution Approach 1:
The outer member is segmented into a base portion and a first bent portion that extends toward the inner side of the vehicle. This segmentation allows the base portion to maintain a gap with the inner member's side portion, while the first bent portion provides the welding surface, thereby separating the positioning function from the welding function and improving dimensional accuracy
Solution Approach 2:
The first bent portion acts as an intermediary element between the base portion of the outer member and the side portion of the inner member. It enables welding to occur at a controlled distance from the base portion, mediating the relationship between structural integrity and dimensional precision
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 design enhances the dimensional accuracy of the door frame column by adjusting the gap between the inner and outer member components during welding, resulting in improved structural precision.
Implementation Method 1
the first bent portion of the outer member is welded to the side portion of the inner member in a state where a gap is formed between the base portion of the outer member and the face of the side portion of the inner member, which faces the base portion
Data Source
AI summary
A door frame includes: a column, wherein the column includes: an outer member; and an inner member, which is attached to the outer member and of which at least a part is located at an inner side of the vehicle, wherein the outer member includes: a base portion; and a first bent portion that is bent at an end portion of the base portion and extends to the inner side of the vehicle, wherein the inner member includes: a side portion that has faces, which respectively face the base portion and the first bent portion, and wherein the first bent portion of the outer member is welded to the side portion of the inner member in a state where a gap is formed between the base portion of the outer member and the face of the side portion of the inner member, which faces the base portion.