Vehicle Seat Side Bracket Adjustment Without Belt Interference

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Solution Overview

Problem

Existing vehicle seat designs face challenges in expanding the vertical and front-back adjustment range without interfering with the seat belt mechanism or projecting the seat cushion edge, limiting the flexibility and comfort of seat positioning.

Innovation Solution

A vehicle seat design featuring a side bracket composed of an upper and lower bracket, with adjustable fastening portions allowing independent movement of the upper bracket relative to the lower bracket, enabling expanded lifter adjustment without the need for upward extensions and maintaining the seat belt buckle's relative position.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If the side bracket is extended upward in the front and rear parts to expand the adjustment range, then the vertical adjustment range of the seat body is improved, but the seat cushion edge may interfere with the extension and the seat belt mechanism may be interrupted

Engineering Contradiction:
Improveadjustment rangeVSAvoidinterference with seat cushion and seat belt
Core Design Contradiction:
Adaptability or versatilityVSObject-generated harmful factors

Solution Approach 1:

The side bracket is divided into an upper bracket and a lower bracket as separate components. The lower bracket is fixed to the vehicle floor, while the upper bracket is adjustable relative to the lower bracket through fastening portions with multiple hole positions. This segmentation allows the adjustment function to be achieved without extending the side bracket upward, thereby avoiding interference with the seat cushion edge and seat belt mechanism.

Inventive Principle:
Principle #1Segmentation

2Object-generated harmful factors

If the side bracket structure is simplified without extensions, then the seat belt mechanism clearance is improved, but the adjustment range is limited

Engineering Contradiction:
Improveseat belt mechanism clearanceVSAvoidadjustment range
Core Design Contradiction:
Object-generated harmful factorsVSAdaptability or versatility

Solution Approach 1:

The fastening portions are designed with multiple hole positions that allow the upper bracket to be adjusted to different vertical positions relative to the lower bracket. This dynamic adjustability provides a wide adjustment range while maintaining a compact side bracket structure that does not extend upward, ensuring adequate clearance for the seat belt mechanism.

Inventive Principle:
Principle #15Dynamics

3Adaptability or versatility

If multiple fastening holes are provided for expanded adjustment, then the positioning flexibility is improved, but the device complexity increases

Engineering Contradiction:
Improvepositioning flexibilityVSAvoidfastening structure complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The side bracket is segmented into upper and lower brackets with fastening portions containing multiple hole positions. This segmentation provides positioning flexibility through selective hole selection while maintaining relatively simple individual component structures, avoiding the need for complex extension mechanisms.

Inventive Principle:
Principle #1Segmentation

Data Source

PatentUS20250326332A1Vehicle seat
Publication Date: 2025.10.23 TOYOTA JIDOSHA KK
  • US20250326332A1 patent drawing
  • US20250326332A1 patent drawing
  • US20250326332A1 patent drawing

AI summary

A vehicle seat includes a seat body and side brackets provided on the outer sides of the seat body. Each of the side brackets includes an upper bracket and a lower bracket. The upper bracket is fastened to an outer side surface of the seat body and is also fastened to the lower bracket. The lower bracket is fastened directly or indirectly to a vehicle floor. The lower bracket and the upper bracket are fastened at a front fastening portion and a rear fastening portion, which are located apart from each other in the front-back direction of the seat body. The front fastening portion and the rear fastening portion each include an adjuster configured to change a position of the upper bracket with respect to the lower bracket in an up-down direction or in up-down and front-back directions to fasten the front and rear fastening portions together.