Egg-Shaped Sports Camper Shell for Lightweight Structural Strength

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Solution Overview

Problem

Existing caravan trailers are often heavy, fragile, and difficult to mass-produce, making them unsuitable for smaller vehicles and increasing their cost.

Innovation Solution

A lightweight sports camper with an egg-like shape is designed, featuring a housing assembled from inner and outer shells with parallel peripheral edges for increased strength, and a cradle made from wear-resistant material to protect the softer housing material.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Weight of moving object

If caravan trailers are made lighter for smaller vehicles, then weight is reduced and suitability for smaller vehicles improves, but structural strength and durability deteriorate

Engineering Contradiction:

Improvecaravan weightVSAvoidstructural strength

Core Design Contradiction:

Weight of moving objectVSStrength

Solution Approach 1:

The caravan housing uses composite construction with an outer shell made from wear-resistant material and an inner shell made from softer material, creating a lightweight yet strong structure suitable for smaller vehicles while maintaining durability

Inventive Principle:

Principle #40Composite materials

Solution Approach 2:

The caravan features an egg-like rounded shape with curved surfaces instead of sharp corners, which distributes stress more evenly throughout the structure, increasing overall strength while maintaining lightweight construction

Inventive Principle:

Principle #14Spheroidality (Curvature)

2Weight of moving object

If caravan trailers are made from softer materials to reduce weight, then weight is reduced, but wear resistance deteriorates

Engineering Contradiction:

Improvecaravan weightVSAvoidwear resistance

Core Design Contradiction:

Weight of moving objectVSObject-affected harmful factors

Solution Approach 1:

The housing employs a dual-material shell construction where the outer shell is made from wear-resistant material to withstand external abrasion and damage, while the inner shell uses softer material to reduce overall weight, achieving both lightweight and durable characteristics simultaneously

Inventive Principle:

Principle #40Composite materials

3Ease of manufacture

If traditional caravan designs are used, then manufacturing experience is available, but manufacturing complexity and cost increase

Engineering Contradiction:

Improvemanufacturing simplicityVSAvoiddesign complexity

Core Design Contradiction:

Ease of manufactureVSDevice complexity

Solution Approach 1:

The caravan housing is divided into separate outer and inner shell components that can be manufactured independently and then assembled, simplifying the manufacturing process and enabling mass production while reducing overall design complexity

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The outer and inner shells are designed to be pre-assembled as separate units before final assembly into the complete caravan housing, allowing for standardized manufacturing processes and easier quality control

Inventive Principle:

Principle #10Preliminary action

Data Source

PatentUS12296738B2Sports camper structure

Publication Date: 2025.05.13 MINK CAMPERS EHF

AI summary

The present invention relates to a sports camper of a teardrop caravan type having rounded corners to give the housing of the caravan a egg-like shape. The sports camper of the present invention is designed to be lightweight having increased structural strength and wear.