Cargo Strap Deflection Mechanism for Lashing Interference
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Solution Overview
Problem
The existing solutions for securing cargo in commercial vehicles often result in tension belts hanging loosely in the cargo space, causing disruptions during loading and unloading operations, as they tend to swing or interfere with the loading process due to inadequate retraction mechanisms.
Innovation Solution
A device featuring a belt carrier with a deflection area and a prestressed cable system that routes the tension belt to a cable pulley below the ceiling, allowing the belt to be deflected outward near the side wall when not in use, reducing interference during loading and unloading by increasing frictional forces and using a carabiner for secure attachment, thus minimizing disruptions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the tension belt is retracted using a conventional retraction device with the belt carrier positioned centrally, then the belt can be stored when not in use, but the loose tension belt still hangs in the central cargo space and interferes with loading and unloading operations
Solution Approach 1:
The patent applies dimensionality change by routing the tension belt through a deflection area that redirects it laterally toward the side wall instead of allowing it to hang vertically in the central cargo space. The deflection area changes the spatial dimension of belt storage from a central vertical position to a lateral position near the side wall, eliminating interference with loading operations.
Solution Approach 2:
The deflection area acts as an intermediary element between the belt carrier and the side wall. It redirects the tension belt from the central cargo space to the side wall area, serving as a mediating structure that resolves the conflict between belt storage and loading space accessibility.
2Ease of operation
If the deflection area is positioned closer to the side wall, then the tension belt is moved outside the central cargo space area, but the cable routing becomes more complex
Solution Approach 1:
The patent extracts the deflection function from the central belt carrier structure and positions it laterally closer to the side wall. This separation allows the deflection area to independently route the belt to the side wall without interfering with the central cargo space, while the cable routing complexity is managed by integrating the deflection area into the existing belt carrier assembly.
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 effectively retracts the tension belt to a position outside the central cargo area, reducing the risk of interference during loading and unloading, providing stable support and minimizing the risk of the belt carrier moving excessively while the vehicle is in motion.
Implementation Method 1
a prestressed cable attached to the belt carrier, the belt carrier having a deflection area over which the tensioning belt is routed, and the cable, starting from its cable attachment leading out of the belt carrier
Implementation Method 2
leading to a cable pulley arranged below the luggage compartment ceiling
Implementation Method 3
increasing frictional forces and using a carabiner for secure attachment
Data Source
Figure 1~2
Figure 3~4
Figure 5~7
AI summary
A device for securing cargo in a cargo space of a commercial vehicle, enclosed by two walls (3), a loading floor and a cargo space ceiling, is proposed, comprising a tensioning strap (30) that can be lashed over the cargo to be secured and a return device arranged below the cargo space ceiling (2), consisting of a strap carrier (20) through which the tensioning strap (30) passes and a pre-tensioned rope (15) attached to the strap carrier (20), wherein the strap carrier (20) has a deflection area (40) over which the tensioning strap (30) is guided, and wherein the rope (15) extends from its rope attachment (45) leading out of the strap carrier (20) to the cargo space ceiling (2).In order to minimize disruption to loading and unloading operations caused by the loose tension strap hanging down into the cargo space, the tension strap (3) is deflected in the deflection area (40) such that at least one deflection (40B) has a smaller distance to the wall (3) than the rope attachment (45).