Motorhome Underbody Flat Surface Storage Design
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Solution Overview
Problem
Existing touring vehicle bodies, particularly motorhome bodies, face limitations in usability and accessibility of storage space due to obstructive designs and insufficient separation between storage and living areas.
Innovation Solution
A touring vehicle body design featuring an underbody unit with a flat, metal-free surface extending from the rear axle to the driver's cabin, combined with a lightweight, metal-free top floor unit, which provides a self-supporting connection and creates a large, unobstructed storage space while maintaining stability and accessibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If traditional touring vehicle bodies are used with obstructive designs, then structural stability is maintained, but storage space usability and accessibility deteriorate
Solution Approach 1:
The vehicle body is divided into distinct functional units: underbody unit for storage, upper floor unit for living space, driver's cabin unit, and rear axle unit. This segmentation allows the storage area to be clearly defined and accessible while maintaining overall structural stability through proper connection points.
Solution Approach 2:
The underbody unit extends the storage space into the vertical dimension below the upper floor, creating an otherwise underutilized space. The flat underbody surface at a lower level provides accessible storage without compromising the vertical structural integrity of the vehicle body.
2Ease of operation
If continuous flat underbody surface is implemented, then storage space usability improves, but manufacturing complexity increases
Solution Approach 1:
The underbody unit is manufactured as a separate modular component with its own flat surface, then assembled to the vehicle body. This segmentation allows for simplified manufacturing of individual parts while achieving the overall continuous flat surface effect when assembled.
Solution Approach 2:
The underbody surface is designed with specific geometric parameters (flatness, continuity, extension range) that optimize storage usability. By carefully controlling these parameters during design and assembly, the patent achieves a continuous flat surface that is both usable and manufacturable.
3Weight of moving object
If metal-free lightweight construction is used for top floor, then weight is reduced, but structural strength decreases
Solution Approach 1:
The upper floor unit employs composite construction combining lightweight materials (such as aluminum alloys, plastics, or wood composites) with strategic metal reinforcement elements. This composite approach reduces overall weight compared to traditional all-metal construction while maintaining sufficient structural strength through the synergistic combination of materials.
Solution Approach 2:
Instead of making the entire floor structure metal-free, the patent applies metal-free lightweight materials in areas where high strength is not critical, while retaining strategic metal components or reinforcement elements in areas requiring higher strength. This localized material selection optimizes the weight-strength ratio.
Data Source
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AI summary
The invention relates to a recreational vehicle body, in particular a motorhome body, with at least one underbody unit (10) and with at least one upper floor unit (12), which are provided in particular for a self-supporting connection of a rear axle unit (14) to a driver's cab unit (16), and which define a storage space (18) which is arranged at least partially between the rear axle unit (14) and the driver's cab unit (16) and which extends continuously in at least one area from a first longitudinal side (20) of the body to a second longitudinal side (22). It is proposed that the underbody unit (10) has an underbody (24) which forms an at least substantially flat underbody surface (26) which extends continuously over at least a large part of a length (28) from the rear axle unit (14) to the driver's cab unit (16).