Cross-Shaped Tether Anchor for Swivel Seat Fixation
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Solution Overview
Problem
Existing tether anchorage systems for swivel seats in vehicles fail to securely fix baby seats when the swivel seat is adjusted to lateral or diagonal positions, leading to reduced constraint force and potential removal of the baby seat during vehicle shocks.
Innovation Solution
A tether anchorage device with a cross-shaped anchor bar and vertical bar integrated into the anchor trim, which is mounted on the rear surface of the swivel seat, secures the tether belt in both vertical and horizontal directions, ensuring the baby seat is anchored regardless of the swivel seat's position, using a hook mechanism and elastic clips for secure attachment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional anchor structure is used for swivel seats, then the baby seat can be fixed when the swivel seat is in forward or rearward positions, but the constraint force is insufficient and the baby seat may be removed when the swivel seat is in lateral or diagonal positions due to vehicle shocks
Solution Approach 1:
The patent transitions from a conventional single-point anchor to a cross-shaped anchor structure with horizontal and vertical bars. This dimensional expansion creates multiple attachment points (first and second attachment portions) that provide restraint forces in different directions, ensuring secure fixation regardless of the swivel seat's orientation - whether forward, rearward, lateral, or diagonal.
Solution Approach 2:
The cross-shaped anchor structure serves multiple functions simultaneously: it provides attachment points for the tether belt in various directions, accommodates different swivel seat positions (forward, rearward, lateral, diagonal), and distributes restraint forces across multiple points. This multi-functionality makes the anchor system universally effective across all swivel configurations.
2Ease of manufacture
If the tether belt is anchored using a conventional single-point structure, then the installation is simple, but the stress concentration leads to reduced constraint force during vehicle shocks
Solution Approach 1:
The anchor structure is segmented into distinct functional components: a horizontal bar with first and second attachment portions, and a vertical bar. This segmentation allows the tether belt to be attached at multiple separated points, distributing the stress from vehicle shocks across these segments rather than concentrating it at a single point, thereby maintaining constraint force during impacts.
3Reliability
If the anchor structure is designed to provide multi-directional restraint, then the constraint force is maintained across all swivel positions, but the device complexity increases
Solution Approach 1:
The patent merges the horizontal bar and vertical bar into a single integrated cross-shaped anchor structure. This combination achieves multi-directional restraint capability (horizontal and vertical attachment portions) while maintaining structural unity and simplicity. The merged structure is easier to install and manufacture compared to separate multi-component systems, thus reducing overall device complexity while maintaining reliability.
Data Source
AI summary
A tether anchorage device for a swivel seat of a vehicle is provided. The device is configured such that an anchor including a horizontal bar and a vertical bar is mounted on a rear surface of the swivel seat, and a tether belt for fixing a baby seat is anchored to the anchor while being bound in a vertical direction as well as a horizontal direction of the swivel seat, so that the baby seat may be securely fixed to the swivel seat regardless of a rotating position of the swivel seat.