Cargo Locking Bar With Flexible Claws For Side Pressure Stability
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Solution Overview
Problem
Existing locking bars for securing loads in cargo spaces lack stability and effective frictional engagement, particularly under side pressure, relying solely on clamping force rather than a stable design.
Innovation Solution
Incorporation of flexible elements such as rotating clamping claws or pivoting clamping elements with spring pressure to create a frictional connection with the holder, which increases engagement when side pressure is applied, utilizing a swivel fork that can pivot to narrow the slot width and enhance the frictional connection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a locking bar uses only clamping force to secure a holder, then the structure remains simple, but stability under side pressure is insufficient
Solution Approach 1:
The locking bar incorporates flexible elements that can dynamically adapt to side pressure. When lateral force is applied, the flexible elements deform and increase frictional engagement with the holder, providing automatic stabilization without requiring complex mechanical structures. This dynamic response resolves the contradiction by maintaining reliability under varying load conditions while keeping the overall structure relatively simple.
Solution Approach 2:
The patent changes the physical state of the locking bar elements from rigid to flexible, allowing them to undergo elastic deformation. This parameter change enables the elements to increase their frictional contact area and pressure with the holder when side pressure is applied, thereby improving stability without adding complex mechanical components.
2Reliability
If flexible elements are added to increase frictional connection, then engagement stability improves, but device complexity increases
Solution Approach 1:
The flexible elements are integrated directly into the locking bar structure itself, merging the functions of the locking mechanism and the friction-increasing elements into a single unified component. This integration approach improves engagement stability through enhanced frictional connection while avoiding the need for separate additional components, thus minimizing the increase in device complexity.
Solution Approach 2:
The patent employs flexible elements within the locking bar that can deform elastically to increase surface contact and friction with the holder. These flexible components are designed to provide the necessary frictional engagement while maintaining a compact form factor, resolving the contradiction between improved reliability and increased complexity by using flexible materials rather than adding multiple rigid components.
3Reliability
If clamping claws with teeth are used to increase friction, then resistance to side pressure improves, but ease of operation decreases
Solution Approach 1:
The clamping claws are designed with spring elements that provide dynamic engagement. During insertion, the spring allows the claws to flex and accommodate the holder easily. Once engaged, the spring force presses the teeth into the holder to provide strong resistance against side pressure. For removal, the spring mechanism allows easy release when the clamping force is relieved. This dynamic behavior resolves the contradiction between high resistance to side pressure and ease of operation.
Solution Approach 2:
The spring elements in the clamping claws provide beforehand cushioning during the engagement process. The spring allows initial easy insertion by accommodating misalignments and then progressively engages the teeth with the holder. This cushioning effect facilitates easy operation during insertion while ensuring strong frictional engagement for resistance to side pressure during normal use.
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 provides enhanced stability and securement of loads by increasing frictional engagement with the holder, preventing slipping under lateral pressure, and allowing for easy insertion and removal of the locking bar.
Implementation Method 1
the clamping element being pressable against the holder by a spring force F, 40
Implementation Method 2
a frictional connection with the holder can be created here by the plastic covering
Data Source
Figure 1
Figure 2
Figure 3
AI summary
A load securing bar for fitting inside a goods vehicle has an extruded construction (3) with grips at each end to secure onto fixed grips (1.1, 1.2) inside the vehicle. The grips include elastic grip profiles and a hinged fitting to ease the fitting and removal of the bar. One end of the bar has a clamping handle to secure the fitting. The elastic grips can be insert grip pads or can be part of the moulding of the grips.