Vehicle Seat Frame Bracket L-Shape Deformation
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Solution Overview
Problem
Conventional vehicle seat frame brackets with U-shaped cross-sections concentrate stress during collisions, leading to localized bending and potential cracking under large loads.
Innovation Solution
A frame support structure featuring a bracket with a general L-shape configuration, where the second support plate is fixed to the lower surface of the horizontal frame, allowing for gradual deformation and distributing load more evenly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a U-shaped bracket is used to support the frame, then structural strength is improved, but stress concentration occurs during collisions leading to localized bending and potential cracking
Solution Approach 1:
The bracket is divided into multiple plates (first support plate, second support plate, and third support plate) that are connected together. This segmentation allows each plate to deform independently during collision, distributing stress across multiple components rather than concentrating it at a single fixed portion, thereby preventing localized bending and cracking while maintaining overall structural strength.
2Stability of the object's composition
If the bracket is fixed rigidly to the frame, then support stability is improved, but bending deformation becomes localized under large loads
Solution Approach 1:
The bracket transitions from a rigid fixed connection to a dynamic structure where the first support plate can rotate relative to the second support plate around a fixed portion. This dynamic capability allows the bracket to adapt its deformation pattern during collision, enabling gradual bending deformation distributed across multiple plates rather than localized deformation, while maintaining support stability through the interconnected plate structure.
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
The L-shaped bracket design facilitates gradual bending deformation of the vehicle seat frame, reducing the likelihood of cracking and distributing load more evenly, thus enhancing structural integrity during collisions.
Implementation Method 1
the first support plate easily deforms by rotating toward the front of the seat around the fixed portion of the first support plate and the second support plate
Implementation Method 2
the bracket receives the force of the forced displacement of the horizontal frame, and the first support plate deforms toward the front along with that deformation. As a result, bending deformation of the frame is able to be gradual and not localized, so the frame will not easily crack
Data Source
AI summary
A frame support structure of a vehicle seat includes a frame and a bracket supporting the frame on a vehicle floor. The frame extends toward a first side of a vehicle seat cushion in the seat width direction to extend the seat cushion to the direction of the first side. One end of the frame is connected to the first side of the vehicle seat cushion. The bracket includes a first support plate and a second support plate, which extends in a direction perpendicular to the first support plate. An edge of the second support plate is fixed to that of the first support plate on a side opposite from the first side. A plate face of the first support plate is fixed to a front or a rear surface of the frame and the second support plate is fixed to a lower surface of the horizontal frame.