Swivel Seat Rotation Anchorage for Twist-Free Child Seat Tethers
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Solution Overview
Problem
Child seats installed on swivel vehicle seats face instability due to twisting of the child seat belt when the vehicle seat rotates, leading to potential safety hazards during vehicle accidents.
Innovation Solution
A vehicle seat design featuring a rotation anchorage system with a mounting block, rotating block, tensioner, and piston device that allows the top tether of the child seat to be securely fastened without twisting, ensuring stability during seat rotation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a child seat is fixed to a swivel vehicle seat using a conventional anchor member, then the child seat can be installed on the vehicle seat, but the child seat belt becomes twisted when the vehicle seat rotates, causing instability
Solution Approach 1:
The patent applies the dynamics principle by making the anchor member rotatable rather than fixed. The anchor member includes a rotating block that can rotate along with the swivel vehicle seat, allowing the top tether to remain aligned and preventing twisting during rotation. This dynamic adjustment resolves the contradiction between adaptability to rotation and mounting stability.
2Adaptability or versatility
If the vehicle seat is designed to rotate to face different directions, then the vehicle seat provides enhanced versatility, but the child seat belt twisting occurs during rotation
Solution Approach 1:
The rotating block in the anchor member dynamically adjusts its orientation to match the vehicle seat's rotation angle. The block can rotate freely or to specific angles, ensuring the top tether attachment point remains properly aligned regardless of the vehicle seat's facing direction, thus eliminating belt twisting while preserving rotation capability.
Solution Approach 2:
The patent applies preliminary anti-action by pre-configuring the rotating block to counteract the twisting force that would occur during rotation. The block's rotational capability is designed in advance to prevent the harmful twisting effect before it occurs, allowing smooth rotation without belt interference.
3Device complexity
If a conventional fixed anchor member is used, then the structure is simple, but it cannot accommodate vehicle seat rotation without causing belt twisting
Solution Approach 1:
The patent introduces minimal dynamic complexity by adding a rotating block mechanism to the anchor member. This rotating block can pivot or rotate to accommodate the vehicle seat's rotation, providing the necessary adaptability while maintaining a relatively simple overall structure that integrates with the existing swivel seat mechanism.
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 solution effectively prevents the child seat belt from twisting, ensuring the child seat is stably mounted on the vehicle seat, enhancing safety by maintaining secure attachment during vehicle rotations and potential accidents.
Implementation Method 1
a tensioner that provides an elastic force to the rotating block
Implementation Method 2
a piston device supporting the rotating block so that the rotating block is selectively rotated
Implementation Method 3
a power transmitting device that couples the driving portion to the piston rack and transmits the power of the driving portion to the piston rack
Data Source
AI summary
A vehicle seat for mounting a child seat rotatably provided in a vehicle body, includes a backrest frame; a seat back panel coupled to the backrest frame; and a rotation anchorage which is provided in the seat back panel and is rotatably provided with an anchorage member to which a top tether of the child seat is fastened as the vehicle seat rotates.