Dual-Access Luggage Compartment for Car Roof Tents
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Solution Overview
Problem
Current roof tents do not allow access to luggage stored inside without opening the tent, forcing users to exit the vehicle to retrieve items, which is inconvenient and problematic, especially in adverse weather conditions.
Innovation Solution
The design incorporates a box with external access when the tent is closed and internal access when open, allowing users to access the luggage compartment without leaving the tent, using a combination of a rigid lid, vertical side walls, and a rear trunk lid with anti-lifting lugs and a ¼ turn key lock, along with elastic torsion bars for easy opening and closing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the tent is designed with a single interior access to the luggage compartment, then the user can access luggage from inside the tent, but the user cannot access luggage when the tent is closed without opening the entire tent
Solution Approach 1:
The access system is segmented into two independent access points: an exterior access door on the rear trunk lid and an interior access door within the tent. This allows the exterior door to be opened independently for luggage access without opening the entire tent, while the interior door provides access from inside. The segmentation resolves the contradiction by enabling luggage accessibility in both closed and open tent states without requiring complex mechanical linkages.
Solution Approach 2:
The patent introduces an intermediary structure - the rear trunk lid with integrated exterior access door - that mediates between the external environment and the luggage compartment. This intermediary allows selective access to the luggage compartment from outside without compromising the tent's closure or interior space, solving the accessibility problem while maintaining simple structural design.
2Area of stationary object
If the tent is designed with maximum interior space for sleeping, then the living space is maximized, but the user cannot bring bags back into the tent without encroaching on the sleeping surface
Solution Approach 1:
The patent resolves this contradiction by utilizing the vertical dimension and external space. The exterior access door on the rear trunk lid provides a separate entry point for luggage that does not occupy interior horizontal space. Users can access and store luggage in the compartment below the sleeping surface without reducing the sleeping area, as the access mechanism operates in the external/vertical dimension rather than competing for interior floor space.
3Ease of operation
If the user must exit the vehicle to access luggage stored in the vehicle, then the luggage is easily accessible from the trunk, but the action becomes inconvenient and problematic in adverse weather conditions
Solution Approach 1:
The patent applies preliminary action by providing an exterior access door that is specifically designed for luggage access while the tent remains closed. This allows users to retrieve or store luggage without exiting the tent or exposing themselves to adverse weather conditions. The preliminary design of the rear trunk lid with integrated access door anticipates the need for weather-protected luggage access, enabling users to perform luggage operations from the comfort and protection of the tent interior.
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
Enables convenient access to luggage without encroaching on the living space, allowing users to retrieve items without exiting the tent, even when the tent is closed, and ensures easy operation in various weather conditions.
Implementation Method 1
elastic torsion bars for easy opening and closing
Implementation Method 2
elastic torsion bars for easy opening and closing
Data Source
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AI summary
The invention relates to a car roof tent that attaches to the roof bars and offers storage space for the user's luggage in a compartment that is an integral part of the roof tent but which offers two means of access: external access and internal access. When the tent is closed, the user gains access from the outside to his luggage situated inside the compartment through a separate cover (3). Since the compartment part is integrated, the user also has access to it from the inside when the tent is open (tent cover (2) open) and he himself is inside the tent. He is therefore not obliged to keep going in and out between the inside of the tent and the vehicle, where his luggage would otherwise be stored. Moreover, given such a compartment, the luggage is available without clambering over the inhabitable space or through the tent sleeping area. The compartment may be on the opposite side or on one of the sides of the entrance of the roof tent. This concept of a dual-access compartment applies to roof tents in general. The roof tent according to the invention is particularly intended for those who wish to do touring camping by car.