Removable Holder Seatback Frame for Headrest Attachment

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

The existing seat structure with a resin seatback frame faces challenges in replacing the bracket when it is broken, as it is fixed with bonding adhesive, leading to increased weight due to the need for a seat cover to cover the exposed stay, and requires sufficient strength of attachment between the headrest and seatback frame.

Innovation Solution

A removable holder system is integrated into the seatback frame, featuring a back plate, top plate with insertion holes, and a fixing plate that allows for easy attachment and replacement of holders, reducing the weight of the seat cover and ensuring strong attachment between the headrest and seatback frame.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the bracket is fixed to the seatback frame with bonding adhesive, then the attachment strength is sufficient, but the bracket cannot be replaced when broken

Engineering Contradiction:

Improveattachment strengthVSAvoidreplaceability of bracket

Core Design Contradiction:

ReliabilityVSEase of repair

Solution Approach 1:

The seatback frame is segmented into multiple functional plates (back plate, top plate, fixing plate) that are integrally formed but serve distinct purposes. The holder is designed as a separate removable component that interfaces with these plates, allowing the holder to be replaced independently while maintaining strong attachment through the structured interface between components.

Inventive Principle:

Principle #1Segmentation

2Ease of manufacture

If the stay in the bracket is exposed on the rear side of the seatback frame, then the bracket can be installed, but the seat cover weight increases to cover the exposed stay

Engineering Contradiction:

Improvebracket installationVSAvoidseat cover weight

Core Design Contradiction:

Ease of manufactureVSWeight of moving object

Solution Approach 1:

The holder is extracted as a separate removable component from the integrated bracket design. By removing the holder from the permanent structure and making it independently replaceable, the design eliminates the need for extensive seat cover coverage, thereby reducing seat cover weight while maintaining installation ease.

Inventive Principle:

Principle #2Taking out (Extraction)

3Weight of moving object

If a resin seatback frame is used, then the weight is reduced, but the strength of attachment between headrest and seatback frame must be ensured

Engineering Contradiction:

Improveseatback frame weightVSAvoidattachment strength between headrest and seatback frame

Core Design Contradiction:

Weight of moving objectVSStrength

Solution Approach 1:

The seatback frame utilizes resin material for weight reduction while the attachment mechanism employs a composite structure involving the holder, top plate with insertion holes, and fixing plate. This composite design ensures sufficient attachment strength between the headrest and resin seatback frame by distributing loads across multiple integrated components.

Inventive Principle:

Principle #40Composite materials

Data Source

PatentUS11407348B2Seat structure

Publication Date: 2022.08.09 TACHI S CO LTD

AI summary

A holder is removable from a seatback frame. The seatback frame has a back plate, a top plate extending from an upper portion of the back plate toward a front side, and a fixing plate provided below the top plate and extending from the back plate toward the front side. The top plate has two insertion holes into which two holders can be inserted from above. The fixing plate is configured so as to be able to fix the end portions of the two holders inserted through the insertion holes of the top plate.