Vehicle Seat Frame Joint Structure for Burr-Free Welding Contact
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Solution Overview
Problem
Existing seat frames experience joining defects due to burrs at the joint surfaces, resulting in gaps between welded surfaces, which are not efficiently addressed by existing technologies.
Innovation Solution
The seat frame is designed with a protruding portion on the second joining range to ensure close contact without gaps, even with burrs present, using laser welding or adhesive joining.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional welding or joining methods are used on standard frame surfaces, then joining work can be performed, but gaps are generated between joint surfaces due to burrs, resulting in unreliable joining
Solution Approach 1:
The frame surface is prepared in advance by providing a flattened portion at the joining range before the joining process. This preliminary flattening action removes burrs and ensures a flat surface, preventing gap formation during welding or adhesive joining and ensuring reliable joint contact
Solution Approach 2:
The harmful burrs and irregularities are removed from the frame surface at the joining range by providing a dedicated flattened portion. This extraction of defective surface features ensures that only the flat, sound portion of the frame surface remains for joining, eliminating the source of gap formation
Data Source
AI summary
To provide a seat frame of a vehicle seat. A seat frame of the present disclosure includes a first frame and a second frame. When a planar range of the first frame including a joint portion with the second frame is defined as a first joining range, and a planar range of the second frame including a joint portion with the first frame is defined as a second joining range, at least a part of a portion of an outer edge of the first joining range overlapping an outer edge of the first frame is located outside an outer edge of the second joining range, and a portion of the second frame outside the outer edge of the second joining range is separated farther from the first frame than the second joining range.