Impact Tool Isolator Layout for Hammer-Anvil Vibration Damping
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Solution Overview
Problem
Impact tools experience significant vibration and noise due to repeated impacts between the hammer and anvil, which are transmitted to the operator's hand and require additional hearing protection.
Innovation Solution
The integration of vibration isolators, such as O-rings, washers, and wave springs, is implemented throughout the impact tool to reduce the transmission of vibrations and noise, utilizing materials like metal and viscoelastic substances to dampen or deaden these effects.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If impact forces are transmitted from the hammer to the anvil to tighten fasteners, then the tool performs its tightening function, but vibrations and noise are transmitted to the operator's hand
Solution Approach 1:
Vibration isolators are introduced as intermediary elements between the anvil and tool housing to decouple the transmission path. These isolators allow impact forces to be transmitted to the anvil for tightening while blocking the transmission of vibrations and noise to the operator's hand, effectively separating the useful force transmission from harmful vibration transmission.
Solution Approach 2:
The patent changes the physical parameters of the transmission path by introducing isolators with specific material properties (viscoelastic materials, foam, rubber, springs, or elastomers) that have different mechanical characteristics than the solid tool housing. This parameter change allows the system to transmit high-force impacts while attenuating vibration frequencies and noise levels.
2Object-affected harmful factors
If vibration isolators are introduced to reduce transmission of vibrations and noise, then operator comfort and safety improve, but device complexity increases
Solution Approach 1:
The vibration isolators serve multiple functions simultaneously: they reduce vibration transmission, dampen noise, and can provide bearing support for the anvil. This multi-functionality reduces the need for separate components for each function, thereby limiting the increase in overall device complexity while achieving multiple protective and supportive goals.
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 isolators effectively reduce the transmission of vibrations and noise to the operator's hand, providing a more comfortable and safer working environment.
Implementation Method 1
Isolators are also described for reducing vibration that is transmitted through the tool housing to the handle which are absorbed by the operator
Implementation Method 2
utilizing materials like metal and viscoelastic substances to dampen or deaden these effects
Implementation Method 3
The isolators may also reduce noise created by the impact tool
Data Source
AI summary
An impact tool is provided with vibration isolators to reduce vibrations felt by the operator gripping the handle of the tool. The impact tool has a hammer and an anvil that impact against each other during use. The impacts create undesirable vibrations in the tool housing and noise in the work area. The isolators are useful in minimizing such vibrations and noise.