Vibration-Damped Power Tool Handle With 2:1 Distance Ratio
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Solution Overview
Problem
Existing power tool additional handles with elastic damping elements do not provide optimal vibration damping, leading to high stress on users' joints, and existing tear-off protections are complex and expensive.
Innovation Solution
A damper system with a distancing means that creates a ratio of at least 2:1 between the distance from the axis of vibration to the handle and the distance to the damping means, using an elastic damping element with a metal cladding for added stability and a clamping attachment mechanism for easy installation and detachment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If elastic damping elements are provided in additional handles, then vibration damping is improved, but the damping effect is not optimal and complex tear-off protections are required
Solution Approach 1:
The patent applies beforehand cushioning by positioning the damping element at an optimized distance from the axis of vibration, calculated to achieve optimal vibration attenuation before the vibrations reach the handle. The distancing element pre-establishes the optimal geometric relationship between the damping element and the vibration source, ensuring maximum damping effectiveness while avoiding the need for complex tear-off protections.
Solution Approach 2:
The patent changes the geometric parameter of the damping system by introducing a distancing element that establishes a specific ratio (at least 2:1) between the distance from the axis of vibration to the handle and the distance from the axis of vibration to the damping element. This parameter optimization improves damping effectiveness without requiring complex protective structures.
2Object-affected harmful factors
If the damping element is positioned close to the axis of vibration, then damping effectiveness is improved, but the handle becomes less stable and more prone to accidental detachment
Solution Approach 1:
The patent introduces a distancing element as an intermediary component between the damping element and the handle. This mediator maintains the optimal damping geometry while providing structural stability and preventing accidental detachment. The distancing element serves as a stable connection that preserves both the vibration attenuation effectiveness and the handle reliability.
3Object-affected harmful factors
If the distancing means is dimensioned to achieve optimal vibration damping ratio, then vibration attenuation is improved, but the handle length and device complexity increase
Solution Approach 1:
The distancing element is designed to serve multiple functions simultaneously: it establishes the optimal geometric ratio for vibration damping, provides structural support for the damping element, ensures handle stability, and prevents accidental detachment. This multi-functionality allows the component to achieve optimal vibration attenuation without proportionally increasing overall device complexity.
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 damper effectively attenuates vibrations along the axis of vibration, reducing user fatigue and preventing accidental detachment of the handle, while being easy to install and versatile for use with various power tools.
Implementation Method 1
a damping means (32) for damping impacts (absorbing shocks) and arranged between the handle means (18) and the distancing means (12)
Implementation Method 2
The damper effectively attenuates vibrations along the axis of vibration, reducing user fatigue
Data Source
AI summary
A damper for mounting between a power tool, having an axis of vibration, and a handle. The damper includes a damping arrangement for damping impacts and a spacer. The spacer is dimensioned so that, when the damper is mounted to the power tool, a ratio of a first distance between the axis of vibration and the handle to a second distance between the axis of vibration and the damping arrangement is at least 2:1. Further, a handle having such a damper for a power tool, as well as the corresponding power tool having such a handle, are described.