Battery Pruner Layout for Handle-Centered Balance
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Solution Overview
Problem
Existing pruners suffer from ergonomic issues, leading to tilting moments and difficulty in handling due to improper distribution of weight and battery placement, which complicates operation and increases the risk of accidents.
Innovation Solution
A pruner design with a center of gravity positioned in the handle, offset battery pack placement, and a slim structural design, featuring a fastener for easy carrying and protective covers for batteries, enhancing ergonomics and reducing tilting moments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If the battery pack is placed in the fastening section on the housing, then the pruner can be powered, but the center of gravity shifts away from the handle causing tilting moments and handling difficulty
Solution Approach 1:
The patent positions the battery pack in the fastening section located on the rear end of the housing, utilizing the longitudinal dimension of the pruner structure. This spatial arrangement allows the battery pack to be integrated without interfering with the handle grip area, thereby maintaining handling ease while providing power supply capability.
2Ease of operation
If the center of gravity is positioned in the handle for easy gripping, then handling is improved, but the battery pack placement becomes constrained
Solution Approach 1:
The patent divides the pruner into distinct functional sections: the handle area for gripping and the rear fastening section for battery pack placement. This segmentation allows the center of gravity to be positioned in the handle for stable gripping while the battery pack is integrated in the separated rear section, reducing complexity through modular design.
3Ease of operation
If the pruner structure is made slim for better ergonomics, then user comfort is improved, but the structural strength may be compromised
Solution Approach 1:
The patent applies local quality by providing a tapered reinforcement in the fastening section where the battery pack is mounted. This localized structural enhancement provides the necessary strength to support the battery pack and maintain structural integrity, while the rest of the pruner body remains slim for ergonomic comfort.
Data Source
AI summary
A pruner includes a housing and a drive motor. The drive motor drives a saw chain, which is guided in a guide groove of a guide bar, in a rotary motion via a drive chain sprocket. A fastening section for receiving a first rechargeable battery pack for supplying the drive motor with electrical energy is provided on a rear end of the housing. The fastening section is provided for receiving a second rechargeable battery pack. The fastening section is arranged on the housing, in particular at least on the first handle, in such a way that a center of gravity of the pruner lies in the first handle when the pruner is in a state in which the first rechargeable battery pack and the second rechargeable battery pack are arranged on the fastening section.