Side-loading ratchet with moveable spool cover
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing ratchet devices for securing loads with straps are cumbersome and time-consuming to load or unload, requiring longitudinal feeding of the strap, which is inefficient and poses safety risks in confined spaces.
Innovation Solution
A ratchet device with a spool that allows lateral loading and unloading of straps, featuring a moveable member that switches between open and closed positions to expose the spool side for easy strap insertion and removal, and a rotatable spacer to minimize strap compression and prevent opening.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the strap is fed longitudinally through the spool from one end, then the ratchet mechanism can be engaged, but the process is time-consuming and difficult to operate
Solution Approach 1:
The patent introduces a moveable member that enables lateral (side) loading of the strap into the spool, changing the loading direction from longitudinal (end-to-end) to lateral (side-to-center). This dimensional change allows the strap to be inserted perpendicular to the spool axis, significantly reducing the time and effort required for loading while maintaining full functionality of the ratchet mechanism.
Solution Approach 2:
The moveable member is designed to be movable between open and closed positions, allowing the spool to dynamically switch between a loaded state (with moveable member closed) and an unloading state (with moveable member open). This dynamic configuration enables quick access to the spool for strap insertion and removal without requiring complete disassembly or complex manipulation of the entire device.
2Productivity
If the user pulls the strap through the spool using one hand while maintaining tension with the other hand, then the strap can be fed through, but the user may walk into fixed objects or oncoming vehicles in confined spaces
Solution Approach 1:
By enabling lateral strap insertion from the side of the spool rather than requiring the strap to be fed from the end, the user can stand closer to the device and perform the loading operation in a more compact space. This eliminates the need to walk backwards while maintaining tension, removing the safety hazard of walking into fixed objects or oncoming vehicles in confined spaces like unloading bays or roads.
3Reliability
If the moveable member is kept in the closed position, then the spool is protected and strap loading is prevented, but quick access for loading and unloading is restricted
Solution Approach 1:
The moveable member is designed with simple actuation mechanisms that allow it to be quickly opened when strap loading or unloading is required, and securely closed when protection is needed. This dynamic design provides rapid access to the spool while maintaining reliability during normal operation, resolving the contradiction between protection and accessibility.
Data Source
AI summary
A ratchet device 1 for a strap has a body 105 having a side member 109, and a spool 119 having a side 119a rotatably supported by the side member and a ratchet wheel 121 fixed thereto. The body has a member 161 moveable between an open position in which the other side 119b of the spool is exposed to enable a strap to be laterally loaded into the spool 119 from the exposed side of the spool and laterally unloaded from the spool, and a closed position in which said lateral loading and unloading are prevented.