Modular Vehicle Luggage Box Assembly for Flexible Chassis Integration

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Solution Overview

Problem

Conventional chassis structures require large-scale facilities and molds for production, leading to high costs and limited design flexibility, especially when producing multiple types in small quantities, and there is a need for modularized components to facilitate eco-friendly manufacturing and autonomous driving vehicles.

Innovation Solution

A chassis structure using modular pipes assembled by bolting, with a luggage box attached to the chassis, featuring an inner and outer housing with rotatable gates and drainage channels, allowing for easy assembly and customization.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If conventional chassis structures are produced through press processing and welding using molds, then structural strength and reliability are improved, but manufacturing cost increases and design flexibility decreases

Engineering Contradiction:
Improvechassis structural strengthVSAvoidmanufacturing cost and design flexibility
Core Design Contradiction:
ReliabilityVSEase of manufacture

Solution Approach 1:

The chassis is divided into multiple modular pipe components that can be independently manufactured and assembled through bolting, eliminating the need for large-scale press processing and welding facilities while maintaining structural integrity

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The modular pipe components are designed with standardized interfaces and coupling structures that can be used across different chassis configurations, reducing the number of unique molds needed and enabling flexible production of multiple vehicle types

Inventive Principle:
Principle #6Universality (Multi-functionality)

2Adaptability or versatility

If multiple types of vehicles are produced in small quantities using conventional chassis methods, then design variety is improved, but the number of molds and production costs increase exponentially

Engineering Contradiction:
Improvedesign varietyVSAvoidnumber of molds and production cost
Core Design Contradiction:
Adaptability or versatilityVSEase of manufacture

Solution Approach 1:

The chassis is segmented into standardized modular pipe components with universal coupling interfaces, allowing different vehicle types to be assembled from the same set of modules without requiring additional molds for each variant

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The design allows for parameter adjustments in the modular components (such as pipe lengths, coupling positions, and configuration arrangements) to create different vehicle types from the same base set of standardized parts

Inventive Principle:
Principle #35Parameter changes

3Strength

If chassis are assembled through press processing and welding processes, then structural integrity is improved, but manufacturing complexity and facility requirements increase

Engineering Contradiction:
Improvechassis structural integrityVSAvoidmanufacturing process complexity
Core Design Contradiction:
StrengthVSDevice complexity

Solution Approach 1:

The patent replaces complex welding and press processing mechanical systems with simpler mechanical bolting and coupling systems, reducing facility requirements while maintaining sufficient structural integrity for the application

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

Data Source

PatentUS12420715B2Vehicle luggage box
Publication Date: 2025.09.23 HYUNDAI MOTOR CO LTD
  • US12420715B2 patent drawing
  • US12420715B2 patent drawing
  • US12420715B2 patent drawing

AI summary

An embodiment vehicle luggage box includes an inner housing disposed between multiple pillar members arranged in a longitudinal direction of a vehicle and bent so as to protrude upward from an upper body of the vehicle and to connect sides of the upper body, the inner housing having a box shape to allow an item to be loaded therein and having an opening part openable toward a lateral side of the vehicle, a gate covering the opening part of the inner housing and rotatably coupled to an upper part of the inner housing, and an outer housing coupled to the inner housing along an end of the opening part of the inner housing and in contact with an end of the gate.