Cargo Screen Moving Device with Gear Rack and Lever
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Solution Overview
Problem
In recreational vehicles, the distance between the cargo screen and the rear end of the vehicle is considerable, requiring users to enter the luggage compartment or place their hand on the floor to operate the cover screen, which is inconvenient.
Innovation Solution
A cargo screen system with a screen moving device that includes guide parts, a fixing rail with gear teeth, an operation lever, and a moving rail, allowing the cargo screen to move between positions without user entry into the compartment, using a roller with gear teeth to engage with the rail parts, enabling the screen to be operated from outside.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the cargo screen is positioned at a considerable distance from the rear end of the vehicle, then the luggage compartment space is maximized, but the user must enter the luggage compartment or place hand on the floor to operate the cover screen
Solution Approach 1:
A moving rail part with gear teeth is introduced as an intermediary mechanism between the operation lever and the main body. This moving rail part translates the small movement of the operation lever into a larger movement of the main body, enabling the user to operate the cover screen from outside the vehicle without entering the luggage compartment or placing hand on the floor.
Solution Approach 2:
The operation lever is positioned at a different spatial location (accessible from outside the vehicle) rather than directly on the main body. The lever moves along a rail that is externally accessible, changing the dimensional aspect of operation from inside the compartment to outside, thereby solving the accessibility problem while maintaining the rearward position of the screen.
2Ease of operation
If the operation lever is connected directly to the main body, then the structure is simple, but the user cannot operate the screen from outside the vehicle
Solution Approach 1:
The moving rail part acts as a mediator between the operation lever and the main body. It includes gear teeth that engage with the lever, converting the lever's motion into corresponding motion of the main body. This intermediary mechanism enables external operation while maintaining a relatively simple overall structure.
Solution Approach 2:
The moving rail part is designed to automatically translate the lever's movement into main body movement through its gear mechanism. The system serves itself by converting operational input efficiently without requiring complex control systems or additional actuation mechanisms.
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 operation of the cargo screen from outside the vehicle, reducing the need for user entry or floor contact, with the screen moving twice the distance of the lever, ensuring secure positioning and easy access.
Implementation Method 1
The roller is provided with gear teeth, which are engaged with the gear teeth of the fixing rail part and the moving rail part
Implementation Method 2
The distance the main body moves is approximately twice the distance the lever moves
Data Source
AI summary
A cargo screen includes a main body, mounted in a luggage compartment of a vehicle, and housing a barrier net and a cover screen. A screen moving device includes guide parts mounted to the sides of the luggage compartment; a fixing rail part attached along a length direction of the guide parts and provided with gear teeth; an operation lever part, movably mounted on the fixing rail part to move in a length direction of the fixing rail part by user manipulation; and a moving rail part, coupled to the operation lever part and housing an end of the main body. The moving rail part is moved along the length direction of the fixing rail part by the operation lever part, and is provided with gear teeth.