Vibration-Isolating Handle Structure for Surface Treatment Tools
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Solution Overview
Problem
Operator fatigue and vibration transmission issues in surface treatment devices, such as orbital sanders, due to continuous vibrations from power sources and surface interactions, leading to potential injuries and restricted operating hours.
Innovation Solution
A vibration-reducing component comprising elastic and compressive members, such as polyurethane materials with compression elements like galvanized steel cables, integrated into the handle and bracket system to absorb and reduce vibrations, allowing for adjustable stiffness and frequency tuning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a rigid handle and bracket structure is used to provide strength and stability, then structural strength is improved, but vibration transmission to the operator increases
Solution Approach 1:
The handle and bracket structure is divided into multiple segments connected by vibration-isolating elements. The bracket is segmented into upper and lower portions, and the handle is divided into sections, with vibration-isolating elements positioned at strategic locations to interrupt vibration transmission paths while maintaining structural integrity.
Solution Approach 2:
Vibration-isolating elements are introduced as intermediary components between structural elements. These elements (such as elastomeric materials, springs, or dampers) are positioned between the bracket and handle, and between the handle and crossbar, to absorb and dissipate vibrations while allowing the rigid structural components to maintain their strength.
2Object-affected harmful factors
If vibration-isolating elements are added to reduce vibrations, then vibration transmission is reduced, but device complexity increases
Solution Approach 1:
Vibration-isolating elements are integrated into existing structural components rather than being added as separate external elements. The vibration isolation functionality is merged with the handle, bracket, and crossbar structures, allowing vibration reduction to be achieved within the existing device framework without significantly increasing overall complexity.
Solution Approach 2:
The stiffness and damping parameters of the vibration-isolating elements are optimized to provide effective vibration isolation at specific frequency ranges. By adjusting material properties, geometric parameters, and pre-compression forces, the vibration isolation performance is tuned to match the operating conditions of the surface treatment device.
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
Significantly reduces operator fatigue and vibration transmission, enhancing ergonomic factors, operator control, and balance, while enabling safer and more efficient surface treatment with reduced risk of injury.
Implementation Method 1
a vibration-reducing component connected at one end to the bracket and at its other end to the handle. While vibration is reduced by the combination of parts to be described and their arrangement, the vibration-reducing component is important to the absorption of vibrations transmitted through the handle to the user.
Implementation Method 2
The vibration-reducing component may include two members that provide different properties, such as elastic and compressive.
Data Source
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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.