Swivel Vehicle Seat Hook Mechanism for Folded Cushion Retention

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Solution Overview

Problem

Existing vehicle seats face issues with interference and damage when rotated without being folded up, and the folded-up state can be difficult to maintain, leading to unwanted folding or damage during swiveling.

Innovation Solution

A vehicle seat design featuring a swivel device with a hook and fixing pin mechanism, an elastic body, and a swivel lever to maintain the folded-up state of the seat cushion frame, preventing it from folding down during swiveling by engaging the hook with the fixing pin and applying elastic force to the swivel lever.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If the seat cushion frame is folded up and the swivel device is unlocked, then the seat frame assembly can be swiveled freely, but the seat cushion frame may accidentally fold down causing interference and damage

Engineering Contradiction:
Improveswiveling capabilityVSAvoidfolded-up state stability
Core Design Contradiction:
Adaptability or versatilityVSReliability

Solution Approach 1:

The hook is preliminarily positioned to engage with the fixing pin before swiveling occurs, creating a preventive mechanism that stops the seat cushion frame from folding down during swiveling operations. This preliminary protective action eliminates the need for user awareness or manual intervention.

Inventive Principle:
Principle #9Preliminary anti-action

Solution Approach 2:

The hook acts as an intermediary component between the swivel lever and the fixing pin, transferring and controlling the mechanical interaction. When the swivel lever rotates, it带动 the hook to engage with the fixing pin, mediating the force transmission and preventing unwanted folding.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Ease of operation

If the swivel lever is used to unlock the swivel device, then the seat frame assembly becomes swivelable, but the seat cushion frame may be damaged due to lack of protection

Engineering Contradiction:
Improveswiveling operationVSAvoidmechanical damage risk
Core Design Contradiction:
Ease of operationVSObject-affected harmful factors

Solution Approach 1:

The hook is preliminarily configured to engage with the fixing pin before the swiveling operation commences, establishing protective constraints in advance. This preliminary action ensures that the seat cushion frame is secured against damage before any potentially harmful movements occur.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The engagement mechanism between the hook and fixing pin provides beforehand cushioning by creating a mechanical constraint that prevents excessive movement or accidental folding during swiveling operations, cushioning against potential damage before it can occur.

Inventive Principle:
Principle #11Beforehand cushioning (Prior cushioning)

3Volume of moving object

If the seat cushion frame is folded up for storage, then space is created in the vehicle, but the folded-up state is difficult to maintain leading to unwanted folding

Engineering Contradiction:
Improvespace utilizationVSAvoidfolded state maintenance
Core Design Contradiction:
Volume of moving objectVSStability of the object's composition

Solution Approach 1:

The hook and fixing pin mechanism provides self-service by automatically maintaining the folded-up state through mechanical engagement. Once the seat cushion frame is folded up, the hook engages with the fixing pin to hold it in place, eliminating the need for continuous user intervention or complex locking systems.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The hook is extracted as a separate functional component from the swivel lever, dedicated specifically to the function of maintaining the folded-up state. This extraction allows the locking function to be simplified and focused solely on space maintenance without the complexity of integrated multi-function mechanisms.

Inventive Principle:
Principle #2Taking out (Extraction)

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 design effectively maintains the seat cushion frame in a folded-up state during swiveling, preventing interference and damage, ensuring smooth rotation and reducing mechanical stress on the seat components.

Implementation Method 1

an elastic body configured to connect the swivel lever and the seat cushion frame, and the elastic body may apply force to the swivel lever so that the hook is maintained in a state of being engaged with the fixing pin

Methodology Applied
Scientific EffectElastic force: Elasticity

Data Source

PatentUS20250282264A1Vehicle seat
Publication Date: 2025.09.11 HYUNDAI TRANSYS INC
  • US20250282264A1 patent drawing
  • US20250282264A1 patent drawing
  • US20250282264A1 patent drawing

AI summary

A vehicle seat may include a seat frame assembly including a seat cushion frame being folded up and down, a swivel device configured to swivel the seat frame assembly, a swivel lever configured to unlock the swivel device, and a hook rotated together with the swivel lever to fix the seat cushion frame.