Vibration-Reducing Handle Assembly for Surface Treatment Tools
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Solution Overview
Problem
Surface treatment devices, such as orbital sanders, cause operator fatigue due to transmitted vibrations, leading to potential injuries and restricted usage hours, necessitating a solution to reduce vibration magnitude and improve ergonomic factors.
Innovation Solution
A device with a vibration-reducing component, comprising a compressible elastic member and compression elements, is integrated into the handle to absorb vibrations, allowing for adjustable properties to optimize vibration absorption and operator control, featuring a bracket, handle, and crossbar configuration for improved ergonomics and balance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a rigid handle structure is used to provide operator control, then control precision is improved, but vibration transmission to the operator increases
Solution Approach 1:
A vibration-reducing component is introduced as an intermediary element between the effector and the handle. This component absorbs and attenuates vibrations generated by the effector before they can be transmitted to the handle and operator, while still allowing the handle to maintain its rigid structure for operator control.
Solution Approach 2:
The vibration-reducing function is extracted as a separate, dedicated component rather than being integrated into the handle structure itself. This allows the handle to remain rigid for control while the separate vibration-reducing component handles the vibration attenuation function.
2Object-affected harmful factors
If a vibration-reducing component is added to the handle, then vibration transmission is reduced, but device complexity increases
Solution Approach 1:
The vibration-reducing component utilizes flexible elements such as elastic bands or compliant materials that can be integrated into the handle structure. These flexible elements provide vibration attenuation while maintaining a relatively simple overall device structure.
3Object-affected harmful factors
If the handle structure is modified to reduce vibrations, then operator fatigue is reduced, but ease of manufacture decreases
Solution Approach 1:
The handle assembly is segmented into distinct functional components: the rigid handle portion for control, and a separate vibration-reducing component with flexible elements. This segmentation allows each component to be manufactured using appropriate processes and then assembled, maintaining ease of manufacture while achieving vibration reduction.
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 device significantly reduces operator fatigue by minimizing vibration transmission, enhancing control and balance, and enabling the use of various surface treatment tools, thus improving safety and operational efficiency.
Implementation Method 1
The vibration-reducing component may include two members that provide different properties, such as elastic and compressive. These members may, for example, be arranged with the compressible elastic member at the center
Implementation Method 2
The compressible elastic member may be tubular and may have a cross section that is circular, rectangular, hexagonal, or of other shapes
Data Source
AI summary
A vibration-reducing component and an apparatus for its use. The vibration-reducing component combines an elastic member with a compression element to both resist applied forces and absorb selected vibrations. The vibration reducing component finds particular utility in tools that inherently create vibrations.