Cord Reel Assembly for Tree Pruner Pole
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Solution Overview
Problem
Conventional tree pruners with cords often experience issues with the cord dangling, twisting, or tangling with branches, which wastes time and energy for the user.
Innovation Solution
A cord reel assembly that keeps the cord tight and close to the pole using a coil spring and locking mechanism, ensuring the cord remains organized and functional during use.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If a conventional cord is used for tree pruners, then the cord can reach high branches, but the cord becomes tangled and twisted during use
Solution Approach 1:
The patent employs a coil spring structure that acts as a flexible mechanical element to maintain cord organization. The spring's coiled geometry provides a compact form that guides the cord in a controlled manner, preventing tangling while allowing the cord to extend to necessary lengths for reaching high branches.
Solution Approach 2:
The cord reel assembly incorporates a dynamic spring mechanism that adapts to different cord extension states. When the cord is pulled, the spring expands to accommodate the extended cord; when released, the spring contracts to automatically reel in and organize the cord, maintaining stability in its composition throughout the operational cycle.
2Ease of operation
If the cord is kept loose for easy retraction, then the cord can be pulled easily, but the cord dangles and twists during use
Solution Approach 1:
The coil spring functions as a mechanical counterweight system that provides continuous gentle tension on the cord. This counteracting force prevents the cord from dangling and twisting by maintaining it in a taut, organized state, while the spring's elasticity ensures the cord can still be pulled easily when needed and automatically retracts when released.
Solution Approach 2:
The spring-loaded reel mechanism operates autonomously to maintain cord organization. As the cord is pulled during use, the spring automatically winds and stores the cord; when the cord is released, the spring self-activates to reel in the cord without user intervention, continuously maintaining proper cord position and preventing tangling.
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 cord reel assembly maintains the cord in a tensioned and organized state, preventing tangling and reducing user effort, while also allowing for easy replacement if damaged.
Implementation Method 1
The cord reel assembly includes a coil spring configured to hold the cord in a tensioned state
Data Source
AI summary
A cord reel assembly for a tree pruner having a pole, comprising an outer housing which is divided into a first and a second half, the first half comprising a pole connection mechanism having a male connection part with an insert, the insert is adapted to engage with a locking pin of the pole, for locking the cord reel in place to the pole.