Power Tool Battery Pack Isolation for Vibration Durability
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Power tools generate vibrational forces that can shorten the life cycle of battery packs by transferring excessive vibrations to them.
Innovation Solution
A battery pack isolation system that includes an interface member and a plurality of isolators between the housing and the interface member to mechanically isolate the battery pack from the housing, reducing the transfer of vibrations during tool operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the battery pack is directly coupled to the housing, then electrical connection is simplified, but vibrational forces are transmitted to the battery pack reducing its life cycle
Solution Approach 1:
The patent introduces an interface member as an intermediary component between the battery pack and housing. This interface member includes isolators that mechanically decouple the battery pack from housing vibrations while maintaining electrical connectivity through the interface member, thus protecting the battery pack without requiring direct modification of the battery pack itself
Solution Approach 2:
The isolation system is segmented into distinct functional components: the interface member, multiple isolators positioned at different locations, and electrical contacts. This segmentation allows each component to perform its specific function independently while working together as a system, making the overall system manageable and maintainable
2Reliability
If isolators are added to isolate the battery pack, then vibrational transmission is reduced, but the device structure becomes more complex
Solution Approach 1:
The interface member serves multiple functions simultaneously: it provides mechanical support for the battery pack, incorporates isolators to reduce vibrations, maintains electrical connectivity through integrated contacts, and positions the battery pack correctly. This multi-functionality reduces the need for separate components for each function
Solution Approach 2:
The patent merges the electrical connection function with the mechanical isolation function by integrating electrical contacts into the interface member that also contains the isolators. This combination reduces the total number of separate components compared to having separate isolation mechanisms and electrical connections
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 isolation system effectively reduces the transmission of vibrational forces to the battery pack, thereby extending its life cycle and ensuring reliable power tool operation.
Implementation Method 1
a plurality of isolators coupled between the housing and the interface member to isolate the battery pack from the housing during operation of the power tool
Data Source
AI summary
A power tool includes a housing, a motor positioned substantially within the housing, a drive mechanism supported by the housing and coupled to the motor, a battery pack electrically coupled to the motor, and an isolation system. The isolation system includes an interface member positioned substantially within the housing. The interface member receives a portion of the battery pack to electrically couple the battery pack to the motor. The isolation system also includes a plurality of isolators coupled between the housing and the interface member to isolate the battery pack from the housing during operation of the power tool.