Motorized Cargo Screen Assembly with Rail and Gear Spring Mechanism
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Solution Overview
Problem
Conventional cargo screens require significant force to mount, detach, and operate, making them difficult for children and women to use, and they do not facilitate easy access or operation due to the need to bend and reach, which limits their practicality and accessibility.
Innovation Solution
A cargo screen assembly that allows for mounting and releasing from the rear surface of a rear seat, utilizing a cargo screen rail with a rotation shaft, gear spring assembly, and latch structure, which reduces the required force and enables easy operation by allowing the cargo screen to be moved along a rail, with wheels and magnetic coupling for effortless deployment and stowage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If conventional cargo screen mounting and detaching methods are used, then the cargo screen can be securely fixed, but significant force (49 N to 59 N) is required and the operation becomes difficult for children and women
Solution Approach 1:
The patent replaces the conventional manual mechanical mounting/detaching system with an electric motor-driven system. The motor (220) automatically moves the cargo screen (10) along the rail (50), eliminating the need for users to apply 49-59 N of force manually. This mechanical substitution directly resolves the contradiction by making operation easy while eliminating high force requirements.
Solution Approach 2:
The system performs self-service through automatic operation. When the user activates the control switch, the motor automatically executes the mounting or detaching sequence without requiring continuous manual intervention. The system serves itself by automating the force-intensive operations, allowing users to simply press a button rather than physically maneuver the heavy screen.
2Ease of operation
If conventional cargo screen operation requires bending and reaching, then the screen can be operated, but accessibility is limited for children and women
Solution Approach 1:
The patent replaces manual mechanical operation (bending and reaching) with an electric motor-driven system. The motor (220) automatically positions and moves the cargo screen (10) along the rail (50), eliminating the need for users to bend or reach. This substitution improves accessibility while the automated control reduces operational complexity to a simple button press.
Solution Approach 2:
The motor (220) acts as an intermediary between the user's simple button press and the complex task of moving the heavy cargo screen. This intermediary device translates a simple electrical signal into the complex mechanical actions of deploying and stowing the screen, making the system accessible to children and women without requiring them to perform difficult physical actions.
3Adaptability or versatility
If cargo screen is frequently mounted and detached, then access to cargo space is improved, but the mounting groove and side trims wear out
Solution Approach 1:
The patent replaces the mechanical mounting/detaching system that causes wear to the mounting groove (30) and side trims (40) with an electric motor-driven system. The motor (220) moves the cargo screen (10) along the rail (50) without requiring insertion into the mounting groove, eliminating the wear-causing mechanical interactions. This allows frequent access operations while preserving the durability of the mounting structure.
Solution Approach 2:
The patent extracts the cargo screen (10) from the conventional mounting groove (30) system and replaces it with a rail-based system. The screen now runs along the rail (50) mounted on side trims (40), removing the wear-inducing insertion/extraction cycles from the mounting groove. This extraction preserves the mounting structure while maintaining flexible access capability.
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
The solution significantly reduces the operational force needed, making it easier for all users to mount, operate, and stow the cargo screen, enhancing accessibility and usability, particularly for children and women, while allowing for easy loading of long luggage without the need for frequent mounting and detaching.
Implementation Method 1
a coil spring configured to apply force to the rotation shaft so that the cargo screen rail rotates in the second direction
Implementation Method 2
a rack gear configured such that when the rotation shaft rotates in the second direction, a first end portion of the rack gear comes into contact with the protrusion, and a rotational motion of the rotation shaft is converted into a linear motion by the contact
Implementation Method 3
wheels and magnetic coupling for effortless deployment and stowage
Data Source
AI summary
A cargo screen assembly for opening or closing an upper portion of a cargo space defined between a rear seat and a back door of a vehicle, the cargo screen assembly may include a cargo screen rail mounting groove formed horizontally in a rear surface of the rear seat of the vehicle, a plurality of side trims protruding rearward from respective opposite end portions of the rear surface of the rear seat, and a plurality of cargo screen rails configured to be inserted into the respective side trims or the cargo screen rail mounting groove.