Vehicle Seat Coupling Bracket Welding via Joining Hole
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Solution Overview
Problem
The existing method of coupling a side frame to a coupling bracket in vehicle seats requires reversing the combination during welding, complicating the jig operation and increasing time in mass production, as the welding directions for the two portions are opposite.
Innovation Solution
The solution involves overlapping the upper part of the coupling bracket with the lower part of the side frame and providing a joining hole that extends through the side frame, allowing both welding operations to be performed from the same side, simplifying the welding process and ensuring the welding can be done from a single direction for both joining portions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If welding operations are performed on two portions of the side frame and coupling bracket according to the usual method, then the side frame and coupling bracket are securely joined, but the welding operation requires reversing the combination body which complicates the jig operation and increases time in mass production
Solution Approach 1:
The patent introduces a joining hole that extends through the side frame in the plate thickness direction, creating a new dimensional approach to welding. By providing this through-hole, the welding operation can access the coupling bracket from the opposite side of the side frame, enabling welding from a single direction without reversing the combination body. This dimensional change in the welding approach resolves the contradiction between secure joining and production efficiency.
2Strength
If welding operations are performed on two portions of the side frame and coupling bracket according to the usual method, then the side frame and coupling bracket are securely joined, but the jig operation becomes complicated due to reversing the combination body
Solution Approach 1:
The joining hole extending through the side frame creates a new spatial dimension for welding access. This allows the welding torch to approach the coupling bracket from the rear side of the side frame without requiring reversal of the combination body, thereby simplifying the jig operation and reducing device complexity while maintaining joining strength.
3Reliability
If welding operation is performed from opposite directions on the two edge portions, then both portions can be welded, but the operation time increases due to reversing the combination body
Solution Approach 1:
By creating a joining hole through the side frame in the plate thickness direction, the patent enables welding of the coupling bracket from the opposite side of the side frame without physically reversing the combination body. This maintains welding completeness for both portions while eliminating the time-consuming reversal operation, thus reducing total welding time.
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 approach simplifies the welding operation by allowing both welding joining portions to be performed from the same direction, reducing operational complexity and minimizing the risk of damaging the cushion pad, while maintaining the strength of the side frame.
Implementation Method 1
the side frame and the coupling bracket are usually coupled to each other by arc welding
Data Source
AI summary
A vehicle seat includes a coupling bracket coupling the side frame to the floor-side seat supporting member and fixed to the side frame by welding joining. An upper part of the coupling bracket and a lower part of the side frame are overlapped with each other in an overlapped region. An edge of a first member as one of the coupling bracket and the side frame in the overlapped region is welded, in a first welding joining portion, to a second member as the other of the coupling bracket and the side frame. A joining hole extending through the first member in a plate thickness direction thereof is provided at a position in the overlapped region other than the first welding joining portion, and an edge of the joining hole is welded, in a second welding joining portion, to the second member.