Flexible Seat Frame Hinge for Compact Vehicle Seat Adjustment

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Solution Overview

Problem

Traditional vehicle seats face challenges in balancing adjustability, durability, space constraints, weight minimization, and integration of safety features while maintaining ergonomic comfort and aesthetic harmony, with complex mechanical systems complicating the design process.

Innovation Solution

A seat assembly featuring a single continuous frame with a backrest, seat, and hinge made of composite materials, allowing for flexible movement and adjustment, integrated with actuators and airbags for enhanced ergonomics and safety, and a linkage system for precise positioning.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If traditional mechanical adjustment mechanisms are used, then adjustability and ergonomics are improved, but device complexity increases

Engineering Contradiction:

Improveseat adjustabilityVSAvoidmechanical system complexity

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent replaces traditional mechanical adjustment mechanisms (levers, sliders, linkages) with an inflatable bladder system that uses pneumatic pressure to adjust seat cushion firmness and shape. This substitution eliminates complex mechanical moving parts while maintaining adjustability through inflation/deflation control.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent changes the physical state of the seat cushion by varying the inflation pressure of the bladder. By adjusting the volume and pressure of air inside the bladder, the system dynamically modifies the cushion's firmness, shape, and support characteristics without mechanical moving parts.

Inventive Principle:

Principle #35Parameter changes

2Adaptability or versatility

If multiple adjustment mechanisms are integrated, then ergonomics are improved, but weight increases

Engineering Contradiction:

Improveergonomic customizationVSAvoidseat assembly weight

Core Design Contradiction:

Adaptability or versatilityVSWeight of moving object

Solution Approach 1:

The patent replaces heavy mechanical adjustment mechanisms with a lightweight pneumatic bladder system. The bladder, made of flexible material, weighs significantly less than traditional metal linkages, sliders, and adjustment mechanisms, thereby reducing overall seat weight while maintaining ergonomic adjustability.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

3Adaptability or versatility

If traditional mechanical components are used, then adjustability is achieved, but durability decreases due to moving parts

Engineering Contradiction:

Improveseat adjustment capabilityVSAvoidcomponent durability

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The patent replaces mechanical components subject to wear (levers, sliders, hinges) with a pneumatic bladder system that has no moving parts. The bladder is a sealed elastomeric component that withstands repeated inflation and deflation cycles without degradation, significantly improving reliability.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The bladder system automatically maintains its structural integrity through the elastic properties of the material. The elastomeric bladder self-seals and returns to its original shape after deformation, requiring no maintenance or replacement over the product lifecycle.

Inventive Principle:

Principle #25Self-service

4Volume of moving object

If compact design is implemented, then space utilization is improved, but integration of safety features becomes difficult

Engineering Contradiction:

Improveseat assembly volumeVSAvoidsafety feature integration

Core Design Contradiction:

Volume of moving objectVSAdaptability or versatility

Solution Approach 1:

The inflatable bladder serves multiple functions simultaneously: it provides ergonomic adjustment, structural support, and acts as an integrated airbag for safety. This multi-functionality allows the compact seat design to incorporate safety features without adding separate components, as the bladder itself becomes the airbag when inflated to protective levels.

Inventive Principle:

Principle #6Universality (Multi-functionality)

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 provides a compact, durable, and ergonomically adjustable seat system that optimizes occupant comfort and safety, while minimizing weight and maintaining vehicle performance, with integrated airbags guiding deployment for enhanced passenger protection.

Implementation Method 1

a hinge connected to the seat portion and the backrest portion, the hinge configured to flex to allow relative movement of the backrest portion with respect to the seat portion

Methodology Applied

Scientific EffectFlexing: Elasticity

Data Source

PatentUS20260061898A1Vehicle seat system

Publication Date: 2026.03.05 TESLA INC

AI summary

A seat assembly for an automotive vehicle can include a continuous frame securable to a chassis of the automotive vehicle. The continuous frame can include a seat portion, a backrest portion, and a hinge. The hinge can be connected to the seat portion and the backrest portion. The hinge can be configured to flex to allow relative movement of the backrest portion with respect to the seat portion.