H-Shaped Strap Winder with Spring-Loaded Clevis Pins
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Solution Overview
Problem
Truckers face challenges in storing and securing excess strap length from tie-down devices, which leads to clutter, storage space issues, wear, and safety hazards due to the long straps used in cargo securing.
Innovation Solution
An H-shaped base with spring-loaded quick release clevis pins that allows excess strap to be wound around the base for secure storage and easy retrieval, preventing unwinding and reducing clutter and wear.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of substance
If the complete length of strap (27-33 feet) is stored, then no strap length is wasted, but storage space is required and clutter is created
Solution Approach 1:
The invention extracts only the necessary portion of the strap (approximately 8-12 feet) from the total length (27-33 feet) and secures it on the H-shaped base, while the remaining excess strap (20 feet) is stored separately in a compact manner, thus reducing storage space requirements while preserving the ability to use additional strap length when needed
Solution Approach 2:
The strap is segmented into two portions: the active portion (8-12 feet) that is secured on the H-shaped base for immediate use, and the excess portion (20 feet) that is stored separately. This segmentation allows the active portion to be easily accessible and secured, while the excess portion is stored in a compact manner, resolving the contradiction between maintaining full strap length and reducing storage space
2Area of stationary object
If excess strap is left loose during transport, then no storage space is needed, but safety hazards and wear occur due to wind flail damage
Solution Approach 1:
The invention converts the harmful effect of wind flail damage into a beneficial outcome by securing the excess strap on the H-shaped base. The strap, which would otherwise be vulnerable to wind damage, is now protected and organized on the base structure, eliminating safety hazards while maintaining accessibility
Solution Approach 2:
The H-shaped base serves as an intermediary structure between the strap and the environment. It provides a secure mounting point that protects the strap from wind flail damage while allowing the strap to be easily accessed and used when needed, thus resolving the contradiction between protecting the strap and maintaining accessibility
3Area of stationary object
If strap is rolled up by hand, then storage space is reduced, but time is consumed and clutter is created
Solution Approach 1:
The H-shaped base is pre-configured with a secure mounting structure that allows the strap to be quickly attached and secured. This preliminary preparation eliminates the need for time-consuming manual rolling and securing operations, while maintaining compact storage space utilization
Solution Approach 2:
The H-shaped base provides a self-contained solution for strap storage and securing. The base structure itself performs the function of holding and protecting the strap, eliminating the need for additional manual rolling or securing operations, thus saving time while maintaining compact storage
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 secures excess strap, reduces storage clutter, saves time, and minimizes strap wear by allowing convenient winding and unwinding, while preventing wind-induced damage.
Implementation Method 1
a spring-loaded quick release clevis pin is provided
Data Source
AI summary
A device for securing excess tie down strap on a base formed by two approximately parallel spaced apart arms held together centrally with at least one crosspin. Spring loaded clevis pins provided at a distal end of each arm serve to open channels formed between the arms so that strap can be wound onto or off of the base by gripping the clevis pins as handles and rotating the device. Each clevis pin is movable retained in one of the arms and is rotatable therein by means of a flanged sleeve bearing located within a bushing provided in an opening in the arm. When the clevis pin is in its closed position, an inwardly extending free end of the clevis pin inserts through an aligned opening in the opposite arm and is retained therein by an outwardly biased detent provided on the free end.