Power Tool Battery Isolation Mount for Vibration Protection
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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 power tool operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the battery pack is directly coupled to the housing, then the electrical connection is simple and reliable, but the 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 provides electrical connection while being isolated from the housing through isolators, thereby mediating between the need for reliable electrical connection and the need to protect the battery pack from vibrations.
Solution Approach 2:
The patent segments the connection system into distinct functional components: the battery pack, the isolators, the interface member, and the housing. This segmentation allows each component to perform its specific function - the isolators handle vibration isolation while the interface member handles electrical connection, resolving the contradiction between connection reliability and vibration protection.
2Duration of action of stationary object
If isolators are added to isolate the battery pack from the housing, then the battery pack life cycle is extended, but the device complexity increases
Solution Approach 1:
The patent applies isolation only where needed - specifically between the housing and the interface member that holds the battery pack. This localized application of isolation technology protects the battery pack without requiring complete isolation of the entire tool, thereby extending battery life while minimizing added complexity.
Solution Approach 2:
The interface member serves as a mediator that simplifies the overall system architecture. By providing a dedicated component for electrical connection that can be isolated from the housing, it creates a simple and elegant solution that doesn't significantly increase device complexity while effectively protecting the battery pack.
3Stability of the object's composition
If the interface member is rigidly connected to the housing, then the structural stability is high, but the vibrational forces are transmitted to the battery pack
Solution Approach 1:
The isolators serve as intermediary elements between the rigid housing and the interface member. They provide a compliant connection that maintains structural stability for housing support while filtering out vibrational forces, thereby protecting the battery pack from harmful vibrations.
Solution Approach 2:
The patent changes the mechanical parameters of the connection between housing and interface member from rigid to compliant through the use of isolators. This parameter change allows the system to maintain structural stability while reducing vibration transmission to the battery pack.
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
Implementation Method 2
Power tools (e.g., reciprocating saw, drill, circular saw, jigsaw, etc.) generate vibrational forces 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.