Seat for vehicles

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Solution Overview

Problem

Existing vehicle seat designs suffer from reduced comfort due to inadequate displacement of the pressure receiving member, leading to increased distance from the occupant's back, which diminishes the support effectiveness and comfort.

Innovation Solution

A seat back frame configuration with a swingable upper frame and a shoulder and back supporting member that coordinates with the upper frame, featuring lower flexural rigidity at the shoulder area and a notch-shaped portion to enhance support, along with a holding portion for stable operation, ensuring the shoulder and back supporting member moves in sync with the upper frame.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If the upper seat back frame is made swingable to adapt to occupant body shape, then adaptability is improved, but the pressure receiving member cannot be sufficiently displaced causing reduced support effectiveness

Engineering Contradiction:

Improveadaptability to occupant body shapeVSAvoidsupport effectiveness of pressure receiving member

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The patent combines the pressure receiving member with the upper seat back frame into a unified structure. The pressure receiving member is integrated into the upper seat back frame, ensuring that when the upper frame swings, the pressure receiving member moves together with it, maintaining constant distance and effective support.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The patent implements a swingable upper seat back frame that can dynamically adjust its position forward and backward according to the occupant's body shape. This dynamic adjustment allows the pressure receiving member to maintain optimal contact with the occupant's back while adapting to different seating positions and body types.

Inventive Principle:

Principle #15Dynamics

2Ease of operation

If the distance from the occupant's back to the pressure receiving member is increased due to frame swinging, then swingability is improved, but comfort is reduced

Engineering Contradiction:

Improveswingability of seat backVSAvoidcomfort of occupant

Core Design Contradiction:

Ease of operationVSReliability

Solution Approach 1:

By merging the pressure receiving member with the upper seat back frame, the patent ensures that both components move together as a single unit during swinging motion. This eliminates relative displacement between the pressure receiving member and the occupant's back, maintaining comfort while preserving swingability.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The patent divides the seat back into a lower fixed portion and an upper swingable portion with integrated pressure receiving member. This segmentation allows the upper portion to swing independently for adaptability while the lower portion remains stable, and the integrated design ensures continuous support throughout the swinging range.

Inventive Principle:

Principle #1Segmentation

Data Source

PatentUS9796302B2Seat for vehicles

Publication Date: 2017.10.24 FUJIKURA LTD

AI summary

A seat for vehicles includes: a seat back frame; and a pressure receiving member that is mounted on the seat back frame to support a back of an occupant. The seat back frame includes a lower seat back frame and an upper seat back frame mounted on an upper portion of the lower seat back frame in a forwardly and rearwardly swingable manner, and the pressure receiving member is disposed from an area corresponding to the shoulder of an occupant to an area corresponding to the waist of the occupant and is supported by the upper seat back frame.