Sander Drive-Housing Extension Arms for Vibration Decoupling
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing handheld power tools, particularly sanders, face challenges in efficiently decoupling vibrations between the handle and drive housings, leading to reduced operating convenience, stability, and safety.
Innovation Solution
The introduction of a damping unit with elastic materials and extension arms to connect the handle and drive housings, along with ergonomic design features like a bow-shaped handle and center bar, enhances vibration decoupling and provides a stable, comfortable grip.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the handle housing is rigidly connected to the drive housing, then structural stability is improved, but vibration transmission increases causing reduced operating convenience and safety
Solution Approach 1:
A damping unit is introduced as an intermediary element between the handle housing and drive housing. This damping unit includes damping elements that viscoelastically connect the two housings, absorbing and dissipating vibration energy while maintaining structural stability. The damping unit serves as a mediator that prevents direct rigid connection while ensuring structural integrity.
Solution Approach 2:
The connection between handle housing and drive housing is changed from rigid to viscoelastic by introducing damping elements. The damping elements exhibit time-dependent mechanical properties, transitioning between solid and liquid states under vibration, thereby changing the connection parameters to reduce vibration transmission while maintaining stability.
2Object-affected harmful factors
If damping elements are added to decouple vibrations, then vibration isolation is improved, but device complexity increases
Solution Approach 1:
The damping unit is merged with the existing housing structure, with damping elements integrated into the connection interface between handle housing and drive housing. The damping elements are positioned at critical vibration transmission points, combining vibration isolation functionality with the structural connection without requiring separate complex damping systems.
Solution Approach 2:
The damping elements utilize viscoelastic material properties, behaving like flexible shells that can deform under vibration. These damping elements provide vibration isolation through their inherent material damping characteristics rather than complex mechanical damping structures, simplifying the overall device design.
3Area of stationary object
If the drive housing is extended radially with extension arms, then support width is improved, but manufacturing complexity increases
Solution Approach 1:
The drive housing is segmented into modular components, with extension arms positioned at specific locations to provide radial support. The damping unit is divided into multiple damping elements that can be independently positioned on the extension arms. This segmentation allows for simplified manufacturing of individual components that can then be assembled to achieve the required support width.
Solution Approach 2:
The extension arms extend the drive housing into a radial dimension, creating a wider support base without increasing the axial length. This dimensional extension provides additional support area for the damping unit while maintaining a compact overall structure, and the modular design of extension arms simplifies their integration into the drive housing.
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
This design achieves efficient vibration decoupling, improves operating convenience, stability, and safety, ensuring precise and safe handling of handheld power tools.
Implementation Method 1
a damping unit which couples the drive housing to the handle housing
Implementation Method 2
The damping elements are preferably made of at least one elastic material, in particular an elastic plastic
Data Source
AI summary
A handheld power tool device for a handheld power tool, in particular a sander, preferably an orbital sander or a random orbital sander includes a housing unit, which has a handle housing and a drive housing for holding a drive unit. The drive housing defines a drive axis of the drive unit. The power tool device further includes a damping unit which couples the drive housing to the handle housing. The drive housing includes an extension arm, which extends at least radially with respect to the drive axis and on which at least a portion of the damping unit is arranged.