Movable Center Rear Seat Layout to Prevent Shoulder Bumps

Resolve Bottlenecks,
Find Innovative Solutions
Generate Solutions

Solution Overview

Problem

In vehicles with triple rear seats, passengers on the center seat experience discomfort due to shoulder bumps with passengers on the side seats, making it difficult to sit comfortably.

Innovation Solution

A rear seat design where the center seat is movable forward and connected to side seats via a link device, allowing it to protrude forward, increasing the interval between passengers and preventing physical contact.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If the center seat is fixed in position among triple rear seats, then the seat structure is simple and stable, but passengers experience shoulder bumps and physical contact with side seat passengers, reducing comfort

Engineering Contradiction:
Improvepassenger comfortVSAvoidseat structure complexity
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The center seat is transformed from a fixed structure to a movable one, allowing it to protrude forward relative to the side seats. This dynamic adjustment increases the interval between passengers, preventing shoulder bumps and improving comfort without requiring complete structural redesign

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The seat system is divided into independent movable components - the center seat can move independently from the side seats through link devices. This segmentation allows individual adjustment of the center seat position while maintaining the overall triple seat configuration

Inventive Principle:
Principle #1Segmentation

2Ease of operation

If the center seat moves forward to protrude, then the interval between passengers increases and physical contact is prevented, but the seat structure becomes more complex requiring link devices and latches

Engineering Contradiction:
Improvepassenger comfortVSAvoidlink device complexity
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

Link devices serve as intermediary mechanical components connecting the center seat cushion frame to the side seat cushion frames. These intermediaries enable the center seat movement while maintaining structural connection, providing a controlled mechanism for position adjustment without requiring complete structural overhaul

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The latches and strikers system enables the center seat to automatically lock into position when protruding forward. The mechanical self-latching mechanism maintains the extended position without requiring continuous actuation, reducing operational complexity while preserving the comfort benefit

Inventive Principle:
Principle #25Self-service

Data Source

PatentUS12503014B2Rear seat for vehicle
Publication Date: 2025.12.23 HYUNDAI MOTOR CO LTD
  • US12503014B2 patent drawing
  • US12503014B2 patent drawing
  • US12503014B2 patent drawing

AI summary

A rear seat for a vehicle is provided. The rear seat for a vehicle includes a center seat, and side seats located at left and right of the center seat, and the center seat is movable forward with respect to the side seats to protrude forward, and when the center seat protrudes forward, an interval between passenger is widened, so that it is possible to prevent physical contact between a passenger on the center seat and a passenger on each of the side seats as much as possible.