Integrated Crank Locking Mechanism for Cargo Rails
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Solution Overview
Problem
Existing locking elements for cargo, such as those on trucks, aircraft, and ships, require complex mechanisms outside their profile for fixing, which are energy-intensive, prone to wear, and lack precise and safe operation.
Innovation Solution
A locking element with a crank mechanism integrated within its profile, utilizing a toggle lever and linkage system that allows for single-motion fixing and automatic locking, eliminating the need for external components like springs, and enabling precise and energy-efficient operation by passing over dead centers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If locking elements use complex mechanisms arranged outside the profile for fixing, then the locking function can be achieved, but the device complexity increases and wear increases
Solution Approach 1:
The patent integrates the crank mechanism and locking components within the profile structure itself, merging previously separate external mechanisms with the profile. The crank mechanism is arranged inside the profile hollow space, and locking elements are integrated into the profile walls, eliminating the need for external mounting structures and reducing overall device complexity while maintaining locking reliability
Solution Approach 2:
The crank mechanism is nested within the hollow profile structure, with the crankshaft, connecting rods, and locking elements arranged inside the profile's internal space. This nesting approach allows the locking mechanism to be contained within the profile without increasing external dimensions, reducing device complexity while preserving the locking function
2Reliability
If external components like springs are used for the locking mechanism, then the locking function can be achieved, but energy consumption increases
Solution Approach 1:
The locking mechanism uses the motion of the locking element itself to engage and disengage the locking elements through the integrated crank mechanism. The system locks automatically when the locking element reaches its terminal position, and unlocks when returned to the starting position, eliminating the need for external energy-consuming components like springs or motors
Solution Approach 2:
The locking mechanism operates through periodic reciprocating motion of the locking element along the rail. Each complete cycle of movement automatically performs the locking and unlocking functions through the crank mechanism's geometric conversion of linear motion to rotational motion and back, without requiring additional energy input
3Reliability
If locking mechanisms are arranged outside the profile, then the locking function can be achieved, but wear increases due to external components
Solution Approach 1:
By integrating the crank mechanism and locking elements within the profile structure, the patent eliminates external components that would be exposed to environmental factors and mechanical abuse. All wear-prone components are protected within the profile's hollow space, reducing wear while maintaining the locking function
4Measurement precision
If multiple separate movements are used to fix locking elements at different positions, then precise positioning can be achieved, but the operation becomes complex and time-consuming
Solution Approach 1:
The patent combines multiple locking functions into a single integrated crank mechanism that simultaneously controls both upper and lower locking elements. A single reciprocating motion of the locking element actuates the crank mechanism to engage or disengage both locking positions in one continuous operation, achieving precise positioning while simplifying operation
Solution Approach 2:
The crank mechanism serves multiple functions: it converts linear motion to rotational motion, simultaneously controls both upper and lower locking elements, and provides automatic locking and unlocking in a single operational cycle. This multi-functionality reduces the number of separate operations needed while maintaining precise positioning 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 provides simple, energy-saving, and precise locking and unlocking operations, reducing wear and enhancing safety by keeping all components within the profile, ensuring secure positioning between rails without external disruptive elements.
Implementation Method 1
the at least one locking element is connected to a crank mechanism
Implementation Method 2
The crank drive has the advantage that dead points can be passed over with a suitable toggle lever arrangement
Implementation Method 3
the independent setting occurs by passing over a dead center, so that additional components such as springs or the like are not necessary
Implementation Method 4
the overprofile can be moved relative to the main profile
Data Source
Figure 1~6
Figure 7~9
AI summary
The lower locking element and upper locking element (7) are provided in locking profile (2) of locking assembly (1), and are connected with crank gear (11). The crank gear is equipped with toggle lever (12) which is connected with the lower locking element. The locking elements of locking assembly are moved linearly along ceiling rail (19), so that the locking elements are set automatically into and from locking position. An independent claim is included for a locking assembly.