Seatback Locking Device with Rotating Stopper

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Existing seatback locking devices fail to securely couple a seatback to a vehicle body regardless of the seat cushion's position and allow foreign substances to enter the seatback through the latch mechanism.

Innovation Solution

A seatback locking device featuring a locking housing with a rotation cap and a stopper that can move between positions to engage or disengage with a hook bracket on the vehicle body, using a cable and springs to maintain locking regardless of seat cushion position, and a design that prevents foreign substances from entering the locking mechanism by blocking the internal space.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the latch connects the seatback to the vehicle body, then coupling is achieved, but foreign substances can flow into the seatback through the latch

Engineering Contradiction:

Improvecoupling reliabilityVSAvoidforeign substance intrusion

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The rotation cap is nested within the locking housing, creating a layered structure where the rotation cap rotates inside the housing to control the stopper's engagement with the hook bracket, while the housing itself provides an outer protective barrier against foreign substances

Inventive Principle:

Principle #7Nested doll (Nesting)

Solution Approach 2:

The locking housing with its defined internal space acts as a protective shell that encloses the locking mechanism components, preventing foreign substances from entering while allowing the rotation cap and stopper to move freely within the enclosed space

Inventive Principle:

Principle #30Flexible shells and thin films

2Reliability

If the seatback uses a traditional latch mechanism, then coupling is achieved, but coupling cannot be performed regardless of seat cushion position

Engineering Contradiction:

Improvecoupling reliabilityVSAvoidposition adaptability

Core Design Contradiction:

ReliabilityVSAdaptability or versatility

Solution Approach 1:

The stopper is designed to be rotatable about an axis extending between its both ends, allowing it to dynamically adjust its position and orientation to engage with the hook bracket at various seat cushion positions, transforming a static latch into a dynamic coupling mechanism

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The locking device serves multiple functions: the rotation cap controls the stopper's rotation, the stopper engages/disengages from the hook bracket, and the entire mechanism accommodates different seat cushion positions, making the system universally applicable across various seating configurations

Inventive Principle:

Principle #6Universality (Multi-functionality)

Data Source

PatentUS20250100428A1Seatback locking device

Publication Date: 2025.03.27 HYUNDAI TRANSYS INC

AI summary

A seatback locking device may include a locking housing coupled to a seatback, the locking housing having one open side defined as a housing internal space, a rotation cap inserted into the housing internal space and rotatably coupled to the locking housing, a stopper configured to be movable along a guide defined in the locking housing so as to be locked to or unlocked from a hook bracket disposed on a vehicle body, and a cable connected to one end of the stopper so as to rotate the stopper, wherein the stopper is rotated about an axis between both ends of the stopper by movement of the cable or rotation of the rotation cap so as to contact the hook bracket or the rotation cap.