Vehicle Roll Cover Cassette Release for Easy Cargo-Space Removal
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Solution Overview
Problem
Conventional roll cover assemblies for vehicles require significant physical effort to remove due to the orientation of stiff lateral springs, which can lead to awkward positioning and lack of mechanical assistance during removal.
Innovation Solution
A roll cover assembly with a cassette that includes a locking mechanism and a release device configured to be activated with a line-of-action passing through the cassette, allowing for single-action removal and reducing the tendency for the cassette to twist, featuring a flexible or rigid release device that provides mechanical advantage and low-friction materials for easy retraction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a stiff lateral spring assembly is used to retain the roll cover, then the roll cover is securely held in place, but significant physical effort is required to remove it
Solution Approach 1:
The spring assembly is segmented into multiple coil springs arranged in parallel, each contributing to the overall retention force. This segmentation allows the total spring force to be distributed across multiple elements, maintaining secure retention while enabling more manageable removal forces when the release mechanism is activated.
Solution Approach 2:
A release mechanism acts as an intermediary between the user and the spring assembly. This intermediary translates a small user-applied force into sufficient force to overcome the spring retention, eliminating the need for the user to directly apply large forces against the springs.
2Reliability
If the springs are oriented laterally (cross-vehicle), then the roll cover is retained effectively, but the user must apply force at arm's length with no mechanical assistance
Solution Approach 1:
The release mechanism serves as a mechanical intermediary that provides leverage and force multiplication. It converts a small user input force applied near the cassette into a larger output force that acts on the spring assembly, providing the mechanical assistance that was previously unavailable.
Solution Approach 2:
The release mechanism introduces a new dimensional aspect to the force application by using a lever arm or linkage system. This allows force to be applied in a different spatial configuration, transforming the user's input force into the required output force through mechanical advantage.
3Ease of operation
If the release device is positioned away from the cassette, then it is more accessible, but the cassette may twist about its longitudinal axis during removal
Solution Approach 1:
The release mechanism is designed with asymmetric force application points or a biased linkage configuration that actively counteracts the twisting moment. By positioning the release actuation point and the spring engagement point at different locations along the cassette, the mechanism creates a force couple that prevents rotation while maintaining accessibility.
4Reliability
If the user must stretch awkwardly or clamber into the vehicle to access the release mechanism, then the retention is secure, but the operation becomes physically demanding and inconvenient
Solution Approach 1:
The release mechanism is positioned and oriented to allow actuation from outside the vehicle cargo area. The linkage system transmits force through the cassette structure, enabling the user to operate the release from a convenient position without needing to stretch or clamber into the vehicle.
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
Facilitates easy and efficient removal of the cassette from the vehicle cargo space with reduced physical effort, minimizing twisting and enhancing user convenience by aligning the activation line with the cassette's movement direction.
Implementation Method 1
The latching member is resiliently biased into a locked position, e.g. by virtue of a spring or other resilient member
Implementation Method 2
The materials at the interface between the latching members and the recesses may be selected for their low friction properties
Data Source
AI summary
A roll cover assembly for covering a cargo space of a vehicle includes a cassette housing an extendable/retractable roll cover, a first receptacle adjacent a first side wall of the cargo space and having a channel configured to slidably guide a first end of the cassette during insertion or removal, a second receptacle adjacent a second side wall of the cargo space and having an opening configured to receive a second end of the cassette and permit pivoting of the cassette about the second end during removal of the first end from the first receptacle, a locking mechanism releasably locking the first end of the cassette into the first receptacle, and a release device actuatable to release the locking mechanism by pulling along a line-of-action parallel with a direction in which the first end of the cassette moves during removal from the first receptacle.