Vehicle Seat Frame Rear Support for Compact Impact Absorption
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Solution Overview
Problem
The existing vehicle seat support structures for rear-end collisions are bulky due to the large attachment mechanisms required for the support wires, which compromise their compactness and efficiency.
Innovation Solution
A vehicle seat frame design featuring side frames with a protruding rear portion and a support member with a fixed connecting portion that attaches to the side frame, reducing the size of the attachment mechanism and enhancing stability, while allowing for flexible attachment options and simplified processing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If both ends of the lower wire are connected to link members, then sufficient rearward depression of the back of the seated person can be secured, but the attachment mechanism increases in size
Solution Approach 1:
The patent extracts the link member from the attachment mechanism and replaces it with a simplified wire connection system. The lower wire is directly connected to the side frame without requiring intermediate link members, thereby reducing the attachment mechanism size while maintaining the rearward depression function through the wire's elastic deformation
Solution Approach 2:
The patent introduces a new intermediary component - the elastic lower wire - that directly connects the pressure receiving member to the side frame. This elastic wire serves as both the load-bearing element and the mechanism for achieving rearward depression, eliminating the need for complex link members while providing sufficient rearward movement capability
2Device complexity
If a support member is attached to the side frame with a fixed connecting portion, then the attachment mechanism becomes compact and lightweight, but the distance from the support member to the attachment portion increases
Solution Approach 1:
The patent utilizes the protruding rear portion of the side frame to create a three-dimensional attachment arrangement. The fixed connecting portion is positioned at the rearwardmost extent of the side frame structure, allowing the support member to be attached in a location that optimizes both compactness and minimizes the distance to the attachment portion through spatial optimization in multiple dimensions
Data Source
AI summary
A vehicle seat and frame thereof which minimize the size of an attachment mechanism of a support structure for supporting the back of a seated person are provided. A seat frame has side frames positioned at right and left sides of a seat back frame and extending in an up to down direction. The side frame has a side portion extending along a side portion of the seat, a rear portion projecting from a rear end of the side portion to an inner side of the seat, and a support member spanned between the right and left side frames, and receives a load of the seated person. The support member has a connecting portion for connecting to the side frame and is attached to the rear portion of the side frame in a state where the positional relationship between the connecting portion and the side frame is fixed.