Split Motorhome Tailgate Assembly for Rear Space Extension
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Solution Overview
Problem
Existing motorhome tailgate designs lack improved functionality and space expansion capabilities, with limited flexibility and protection against environmental factors.
Innovation Solution
A horizontally split tailgate assembly with a lower and upper tailgate, where the upper tailgate serves as a roof and the lower tailgate expands interior space, featuring a limiting device that can be mounted between the two for safety, insect protection, and privacy, utilizing elongated elements and inflatable components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If a horizontally divided tailgate assembly is used to expand interior space, then the usable area is increased, but the structural complexity increases
Solution Approach 1:
The tailgate assembly is divided into an upper tailgate and a lower tailgate that can move independently relative to each other. The lower tailgate is pivotally connected to the upper tailgate, allowing separate control of each segment to optimize space utilization while managing structural complexity through modular design
Solution Approach 2:
The tailgate assembly utilizes vertical dimension by stacking the upper and lower tailgates in the vertical direction rather than expanding horizontally. This allows the interior space to be extended upward when both tailgates are open, creating a multi-level usable space without increasing the horizontal footprint
2Ease of operation
If the lower tailgate is made lightweight for ease of operation, then the load capacity decreases
Solution Approach 1:
The lower tailgate is constructed using a panel that can be made from lightweight materials such as thin metal sheets, plastic composites, or glass fibers. These materials provide sufficient structural strength for normal use while significantly reducing the weight compared to traditional solid metal construction, enabling easy manual operation
Solution Approach 2:
The tailgate assembly utilizes composite materials combining lightweight substrates with reinforcing layers. The panel may consist of composite structures such as aluminum honeycomb cores with aluminum skins, or fiber-reinforced plastics, providing high strength-to-weight ratio to balance ease of operation with adequate load capacity
3Reliability
If limiting devices are added for safety and insect protection, then the device complexity increases, but the weight increases
Solution Approach 1:
Insect protection is achieved using fine mesh screens or nets made from lightweight materials such as fiberglass, plastic mesh, or metal wire mesh. These thin film structures provide effective insect barrier functionality while adding minimal weight compared to solid construction materials
Solution Approach 2:
The limiting devices serve as intermediary elements between the interior living space and the external environment. Safety rails and insect screens act as intermediate barriers that provide protection without creating solid walls, maintaining the lightweight philosophy while delivering safety and insect protection functions
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enhances space utilization, provides safety and insect protection, and offers adjustable privacy while maintaining a lightweight and high load capacity, effectively extending the motorhome's usable area.
Implementation Method 1
at least one inflatable element, which preferably has internal tension elements and/or internal fabric bands and/or is preferably designed as a drop-stitch element
Data Source
Figure 1~2
AI summary
Motorhome (1) with a horizontally divided tailgate assembly (2) provided at a rear opening (3), wherein the tailgate assembly (2) comprises a lower tailgate (4) and an upper tailgate (5), and wherein the upper tailgate (5) is attached in a region of an upper edge (6) of the rear opening (3). It is proposed that the lower tailgate (4) be attached in the region of a lower edge (7) of the rear opening (3).