Vehicle Seat Upper Frame Support Against Collision Deformation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing vehicle seat designs face challenges in improving the support performance of side frames with respect to the upper frame, particularly during vehicle collisions when the occupant is pressed against the seat.
Innovation Solution
The vehicle seat incorporates plate-shaped side frames with bent flange portions and a hat-shaped upper frame, where the upper frame is fixed between the flange portions and connected to the side face portion, allowing for regulation of relative movement and internal reinforcement to prevent deformation, thereby enhancing support and stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the upper frame is fixed only between the first flange portion and the second flange portion, then the manufacturing process is simple, but the support performance of the side frames with respect to the upper frame is insufficient during vehicle collisions
Solution Approach 1:
The side frame is segmented into three functional parts: the side face portion for direct connection to the upper frame, and the first and second flange portions for fixed connections. This segmentation allows each part to perform its specific function optimally - the side face portion provides structural support and connection, while the flange portions provide anchoring points, thereby improving overall support performance without requiring a completely different structural approach.
Solution Approach 2:
The invention transitions from a simple two-point fixation (only between flange portions) to a three-dimensional multi-point fixation system that includes the side face portion connection. By adding the connection at the side face portion in addition to the flange portion connections, the upper frame is restrained in multiple directions and dimensions, preventing both rearward movement and rotation, thus improving reliability.
2Reliability
If the upper frame is connected to the side face portion to regulate relative movement, then the support performance is improved, but the device complexity increases due to additional connection requirements
Solution Approach 1:
The invention merges the connection functions into a unified integrated structure where the upper frame simultaneously connects to both the side face portion and the flange portions. This combined connection approach creates a cohesive structural system that works together to prevent rearward movement and maintain positional stability, rather than relying on separate, independent connection mechanisms.
3Ease of manufacture
If the upper frame is placed between the flange portions for fixation, then the manufacturing process is straightforward, but the upper frame may deform or move rearward during vehicle collisions
Solution Approach 1:
The invention applies local quality by providing different types of connections at different locations of the upper frame. The connections to the flange portions provide anchoring strength, while the connection to the side face portion provides structural support and positional regulation. This localized differentiation of connection functions ensures that each area of the upper frame receives the appropriate type of support needed to prevent deformation under collision forces.
Data Source
AI summary
A vehicle seat includes: a seat cushion; a seatback; and a headrest. The seatback includes an upper frame and side frames. The side frame includes a side face portion, a first flange portion formed by bending a front side of the side face portion toward a seat inward side, and a second flange portion formed by bending a rear side of the side face portion toward the seat inward side. The upper frame is placed between the first flange portion and the second flange portion so as to be fixed to the flange portions, and the upper frame is connected to the side face portion, so that a relative movement between the upper frame and the side face portion is regulated.