Adjustable Cargo Strap Cam Locking Mechanism
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Solution Overview
Problem
Traditional bungee cords have a fixed maximum length, limiting their versatility in securing objects of varying sizes, and existing adjustable designs are often complex, costly, and prone to loosening or detachment.
Innovation Solution
An adjustable cargo securing device featuring a flexible cord with a cam mechanism that allows selective length adjustment by pivoting a locking member to secure the cord within a body member, enabling flexible length adjustment without the need for multiple cords or knots.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional bungee cords with fixed length are used, then the structure is simple and reliable, but the adaptability to different cargo sizes is limited
Solution Approach 1:
The bungee cord incorporates a dynamic adjustment mechanism that allows the cord length to be changed from fixed to variable. The cam-shaped locking member can be rotated to different positions to secure the cord at various lengths, transforming the static device into a dynamic one that adapts to different cargo sizes while maintaining structural simplicity
Solution Approach 2:
The locking mechanism is segmented into discrete cam lobes at different angular positions around the pivot axis. Each cam lobe represents a predetermined cord length position, allowing the user to select among multiple fixed length options rather than continuous adjustment, simplifying the mechanism while providing adaptability
2Length of moving object
If knots are tied in the cord to adjust length, then the cord can be shortened, but the cord is subjected to destructive force and requires untying under tension
Solution Approach 1:
The cam-shaped locking member acts as an intermediary between the cord and the user's adjustment action. Instead of directly tying knots in the cord under tension, the cam mechanism mediates the length adjustment by engaging with the cord at low tension states and securing it at predetermined positions, eliminating the need for knots and avoiding destructive forces on the cord
Solution Approach 2:
The cam locking mechanism performs the length adjustment action before the cord is subjected to full cargo weight. The user can freely adjust the cord length by rotating the cam when the system is at rest, and then the cam locks the cord in place before any significant tension is applied, preventing the harmful effects of adjusting under load
3Adaptability or versatility
If existing adjustable bungee cords with complex components are used, then the cord length can be adjusted, but the design is complicated and durability is limited
Solution Approach 1:
The cam-shaped locking member serves multiple functions simultaneously: it acts as the adjustment mechanism for changing cord length, the locking mechanism for securing the cord at selected positions, and the release mechanism when rotated to the next cam lobe. This multi-functionality eliminates the need for separate components for each function, simplifying the overall design while improving reliability through fewer potential failure points
Solution Approach 2:
The invention merges the adjustment, locking, and release functions into a single integrated cam mechanism. The cam-shaped locking member combines the features of an adjustment knob, a locking latch, and a release lever into one component that performs all three functions through rotational movement, reducing device complexity and potential points of failure
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 device provides a wide range of functionality with reduced cord requirements, ensuring secure and durable attachment of objects of different sizes, while preventing loosening under tension.
Implementation Method 1
a cam mechanism that allows selective length adjustment by pivoting a locking member to secure the cord within a body member
Data Source
AI summary
A cargo securing device is shown and described herein. The cargo securing device may include a strap, and a body member having an opening, the strap positioned in the opening. The cargo securing device may also include a securing mechanism located in the body member, where the strap is moveable in a first direction free from engagement with the securing mechanism and where the strap is moveable in a second direction engaging the securing mechanism generally securing the strap within the body member and fixing an operative length of the strap.