Variable-Friction Cargo Surface for Secure Transport and Easy Loading
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Solution Overview
Problem
Existing cargo systems for vehicles lack the ability to dynamically adjust friction levels to effectively hold cargo in place during transport while facilitating easy movement when needed, leading to potential cargo shifting and instability.
Innovation Solution
A cargo system with variable friction surfaces, activated by a control device using fluid movement, which selectively engages either a low friction surface for easy cargo movement or a high friction surface to secure cargo, based on vehicle conditions detected by sensors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a fixed friction surface is used in the cargo system, then cargo can be held in place during transport, but cargo movement is difficult when loading and unloading
Solution Approach 1:
The cargo system employs a dynamic friction surface that can change its friction coefficient based on operational requirements. The surface transitions between high-friction and low-friction states through fluid pressure control, allowing the system to adapt between cargo stabilization during transport and easy cargo movement during loading/unloading operations.
Solution Approach 2:
The system changes the friction parameter of the cargo surface by controlling fluid pressure in chambers. When fluid pressure is applied, the surface material properties change to provide either high or low friction characteristics, enabling the system to optimize cargo holding during transport versus ease of cargo manipulation during loading and unloading.
2Reliability
If a high friction surface is always activated, then cargo remains secure during vehicle movement, but additional force is required to move cargo for loading and unloading
Solution Approach 1:
The system employs periodic activation of high-friction surfaces, switching between high-friction and low-friction states based on vehicle operation phases. During vehicle movement, the high-friction surface is activated to secure cargo; during loading and unloading, the low-friction state is activated to reduce the force required for cargo manipulation.
Solution Approach 2:
The cargo system automatically adjusts friction levels based on vehicle motion detection, eliminating the need for manual intervention. The system self-regulates between high-friction cargo securing mode during transport and low-friction easy-movement mode during loading/unloading operations.
3Ease of operation
If a low friction surface is always activated, then cargo can be easily moved for loading and unloading, but cargo may shift and become unstable during transport
Solution Approach 1:
The system dynamically switches friction surface activation based on vehicle motion state. The low-friction surface is activated during stationary loading/unloading operations for easy cargo access, while the high-friction surface is automatically activated during vehicle movement to prevent cargo shifting and maintain stability.
4Adaptability or versatility
If variable friction surfaces with fluid chambers are added to the cargo system, then cargo stability and movement control are improved, but device complexity increases
Solution Approach 1:
The fluid movement device serves multiple functions: it activates high-friction surfaces for cargo stabilization, activates low-friction surfaces for easy cargo movement, and can be integrated with existing vehicle motion detection systems. This multi-functionality justifies the added complexity by providing comprehensive cargo control capabilities.
Solution Approach 2:
The system uses fluid pressure chambers and pneumatic/hydraulic actuation to control friction surface activation. This approach enables reliable and rapid friction level changes while using compact components that can be integrated into the cargo system structure.
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 system ensures cargo stability during vehicle movement while allowing for easy loading and unloading by dynamically adjusting friction levels according to the vehicle's state, enhancing safety and convenience.
Implementation Method 1
a fluid movement device configured to move fluid into or out of the chamber, to thereby activate or deactivate the surface
Implementation Method 2
the surface includes a high friction surface having a second coefficient of friction; the cargo system further includes a low friction surface that facilitates movement of cargo within the cargo system, the low friction surface having a first coefficient of friction that is less than the second coefficient of friction
Data Source
AI summary
Cargo systems are provided for vehicles that include, in one embodiment: a variable cargo surface disposed within a body of the vehicle behind one or more occupant seats, the variable cargo surface including: a low friction surface that facilitates movement of cargo within the cargo system, the low friction surface having a first coefficient of friction; a high friction surface that inhibits movement of cargo within the cargo system, the high friction surface having a second coefficient of friction that is greater than the first coefficient of friction; and a control device that selectively activates the low friction surface and the high friction surface based on conditions for the vehicle; wherein the low friction surface contacts the cargo within the cargo system when the low friction surface is activated; and the high friction surface contacts the cargo within the cargo system when the high friction surface is activated.