Battery Pack Interface Isolation for Cordless Tool Vibration
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Solution Overview
Problem
Vibrations from power tool motors and tool application elements can negatively affect the interface between the power tool and the battery pack, leading to potential damage such as broken rails.
Innovation Solution
A vibration isolation element is positioned between the battery pack interface and the power tool housing, allowing the battery pack interface to move independently with six degrees of freedom relative to the power tool housing, thereby reducing the transmission of vibrations to the battery pack.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the battery pack interface is rigidly connected to the power tool housing, then structural stability is improved, but vibration transmission to the battery pack increases causing damage
Solution Approach 1:
A vibration isolation element is positioned between the battery pack interface and the power tool housing to serve as an intermediary component. This element absorbs and dampens vibrations generated by the motor, preventing them from being transmitted to the battery pack while maintaining the structural connection between the interface and housing.
Solution Approach 2:
The vibration isolation element changes the mechanical parameters of the connection between the battery pack interface and power tool housing. By introducing compliance and damping characteristics, the system transforms from a rigid connection to a controlled compliant connection that filters out harmful vibrations while maintaining structural integrity.
2Object-affected harmful factors
If the battery pack interface is isolated from the power tool housing, then vibration transmission is reduced, but structural stability deteriorates
Solution Approach 1:
The vibration isolation element acts as a mediator that provides both vibration isolation and structural support. It allows the battery pack interface to be decoupled from housing vibrations while maintaining positional stability and mechanical support through its mounting structure.
Solution Approach 2:
The system is segmented into distinct functional zones: the vibration isolation element separates the battery pack interface from the power tool housing, allowing each component to function independently regarding vibration while maintaining overall structural coherence through the isolation element's mounting mechanism.
3Ease of manufacture
If rigid connection is used between battery pack interface and housing, then manufacturing simplicity is improved, but component durability worsens due to vibration damage
Solution Approach 1:
The vibration isolation element is a relatively simple component that can be integrated into the existing manufacturing process. It provides durability protection against vibration damage while adding minimal manufacturing complexity, as it can be molded or attached as a separate element in the battery pack interface assembly.
Solution Approach 2:
The vibration isolation element may utilize composite materials or elastomeric materials that provide both vibration damping properties and structural integrity. These materials can be integrated through injection molding or other composite manufacturing techniques that add minimal process steps while significantly improving durability.
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 vibration isolation element is positioned between the battery pack interface and the power tool housing, allowing the battery pack interface to move independently with six degrees of freedom relative to the power tool housing, thereby reducing the transmission of vibrations to the battery pack.
Implementation Method 1
a vibration isolation element positioned between the battery pack interface and the power tool housing
Implementation Method 2
The vibration isolation element may be made of an elastic material and serves to dampen the transmission of vibrations
Data Source
AI summary
The present disclosure is directed to a cordless power tool vibration isolation system. A solution to negative impacts of vibration on a removable battery pack caused by operation of a cordless power tool. Isolating the battery pack from the power tool reduces wear and tear on the battery pack including the pack housing, the pack terminals and internal pack components. A battery pack interface of the power tool including a discrete interface housing that mates with the battery pack and a vibration isolation element that separates and isolates the combination of the discrete interface housing and the battery pack from the power tool and the power tool's associated motor induced vibrations.