Vehicle Reclining Seat Assembly With Locked Guide Pin Positioning

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Solution Overview

Problem

Conventional reclining seat assembly processes for vehicles face challenges where the guide pin mounted on the mounting frame of the leg unit escapes from the guide hole in the floor panel during the reclining of the seatback, causing the seat assembly to deviate from its predetermined position, thereby increasing labor and reducing assembly workability.

Innovation Solution

The introduction of a guide clip with a locking structure, which is mounted in the guide hole of the floor panel, and a guide pin that is inserted into the guide clip to be locked by the locking structure, prevents the guide pin from escaping during the reclining process, maintaining the seat assembly at the predetermined position.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Manufacturing precision

If the guide pin is inserted into the guide hole for temporary assembly, then the seat assembly can be positioned at the predetermined location, but the guide pin escapes from the guide hole when the seatback is reclined, causing the seat assembly to deviate from position

Engineering Contradiction:
Improvepositioning accuracyVSAvoidposition stability
Core Design Contradiction:
Manufacturing precisionVSReliability

Solution Approach 1:

A locking structure is introduced as an intermediary element between the guide pin and guide hole. This locking structure engages with both components to prevent the guide pin from escaping during reclining operations, thereby maintaining positioning accuracy while ensuring position stability throughout the assembly process

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The locking structure is designed to be activated in advance before the reclining operation begins. By pre-engaging the locking mechanism, the system prevents the guide pin from escaping during subsequent reclining movements, eliminating the need for repositioning and maintaining assembly precision

Inventive Principle:
Principle #10Preliminary action

2Ease of operation

If the seatback is reclined to allow worker access to the mounting hole, then the mounting operation can be performed, but the leg unit moves upward causing the guide pin to escape and requiring reassembly

Engineering Contradiction:
ImproveaccessibilityVSAvoidassembly efficiency
Core Design Contradiction:
Ease of operationVSProductivity

Solution Approach 1:

The locking structure serves as a mediator that decouples the reclining operation from the guide pin position. It allows the seatback to be reclined for worker access to mounting holes while preventing the guide pin from escaping, thereby maintaining assembly efficiency without compromising accessibility

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The locking structure applies a preliminary counteracting force to prevent the guide pin from escaping during reclining. This anti-action occurs before the guide pin can escape, allowing workers to recline the seatback for access without causing position deviation or requiring reassembly operations

Inventive Principle:
Principle #9Preliminary anti-action

Data Source

PatentUS12291129B2Device for assembling reclining seat of vehicle
Publication Date: 2025.05.06 HYUNDAI MOTOR CO LTD
  • US12291129B2 patent drawing
  • US12291129B2 patent drawing
  • US12291129B2 patent drawing

AI summary

The present disclosure provides a reclining seat assembly device for a vehicle in which a guide pin mounted on a mounting frame of a leg unit is inserted into a guide hole formed in a floor panel so as to be prevented from being separated from the guide hole during reclining of a seatback, whereby the reclining seat is prevented from deviating from a predetermined position on the floor panel and subsequent processes for assembling the reclining seat can be smoothly carried out.