Vehicle Seat Linkage for Integrated Backrest Recline and Tip-Up Motion
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Solution Overview
Problem
Existing vehicle seats require separate power specifications or configurations for adjusting the seatback angle, leading to increased production costs when tilting and sliding functions are integrated.
Innovation Solution
A vehicle seat design that connects a back frame to a seat cushion frame via a connecting link, allowing the back frame to rotate in conjunction with the movement of the seat cushion frame without additional mechanisms, utilizing a sliding link, tip-up locking parts, and circular springs to maintain the seat's position.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If separate power specifications or a separate seatback recliner is used to adjust the seatback angle, then the seatback angle can be adjusted independently, but production costs increase
Solution Approach 1:
The patent combines the seatback reclining function with the seat cushion sliding and tilting functions into a single integrated mechanism. The connecting link couples the back frame to the seat cushion frame, so that when the seat cushion moves or tilts, the back frame automatically rotates in conjunction, eliminating the need for a separate recliner mechanism and reducing production costs
Solution Approach 2:
The seat cushion frame is designed to perform multiple functions: it serves as both the sliding mechanism for cushion movement and the actuation mechanism for back frame rotation. By making the seat cushion frame multi-functional, the patent eliminates the need for separate power specifications and reduces overall system complexity
2Adaptability or versatility
If a connecting link is used to connect the back frame to the seat cushion frame, then the back frame rotates in conjunction with seat cushion movement, but the mechanism becomes more complex
Solution Approach 1:
The connecting link merges the rotation control function with the seat cushion movement mechanism. Instead of adding a separate recliner, the patent uses the existing seat cushion frame and connects it to the back frame through the connecting link, so that one mechanism achieves both cushion movement and back frame rotation
Solution Approach 2:
The connecting link serves multiple purposes: it connects the back frame to the seat cushion frame, transmits motion from the seat cushion to the back frame, and enables the back frame to rotate in conjunction with seat cushion movement. This multi-functional component reduces overall mechanism complexity despite adding structural elements
Data Source
AI summary
A vehicle seat may include a center frame including coupling holes formed therein, a back frame connected to the center frame at a first point, the back frame being reclinable around the first point serving as an axis, a sliding link movable along the coupling holes, a seat cushion frame connected to the sliding link at a second point, and a connecting link configured to connect the back frame to the seat cushion frame, and the seat cushion frame being tilted up around an axis extending through the second point.