Oscillating Power Tool Housing Isolation for Vibration Damping
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Solution Overview
Problem
Power tools, especially oscillating tools, generate significant vibration during operation, leading to instability in handling and user fatigue, which affects work efficiency and processing results.
Innovation Solution
A power tool design featuring a damping system with a gap between the first and second housing structures, incorporating vibration isolation blocks and planes to attenuate vibration transmission from the vibrating body to the non-vibrating body, improving damping performance and user comfort.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If an oscillating tool uses an eccentric transmission assembly to generate oscillation, then the cutting efficiency and processing capability are improved, but the vibration generated during operation increases significantly
Solution Approach 1:
The housing is divided into a first housing and a second housing that are spaced apart, creating a segmented structure. This segmentation allows the vibration isolation blocks to be positioned between the two housing portions, effectively separating the vibration source from the handle and reducing vibration transmission to the user while maintaining the oscillating function for efficient cutting.
Solution Approach 2:
Vibration isolation blocks are introduced as intermediary elements between the first housing (containing the eccentric transmission assembly) and the second housing (containing the handle). These blocks act as mediators that absorb and attenuate vibration, allowing the tool to maintain high cutting efficiency while significantly reducing the harmful vibration transmitted to the user's hand.
2Volume of moving object
If the housing structures are closely connected to reduce overall size, then the device compactness is improved, but the vibration transmission from the vibrating body to the non-vibrating body increases
Solution Approach 1:
Instead of using a single connected housing, the design segments the housing into two separate portions spaced apart. This segmentation creates natural vibration isolation while maintaining a compact overall form factor, as the two housing portions can be closely positioned without being physically connected, thus reducing vibration transmission while preserving device compactness.
Solution Approach 2:
Vibration isolation blocks serve as intermediary elements positioned between the two housing portions. These blocks allow the housing structures to be closely arranged for compactness while simultaneously preventing direct vibration transmission, as the isolation blocks absorb and attenuate vibrational energy between the vibrating and non-vibrating portions.
3Force
If the oscillating tool generates large vibration, then the oscillation amplitude and cutting force are improved, but the user cannot hold the tool stably and feels tired quickly
Solution Approach 1:
Vibration isolation blocks are positioned as intermediary elements between the oscillation generation mechanism and the user's hand. These blocks allow the tool to generate large oscillation amplitudes and cutting forces while intercepting and attenuating the vibration before it reaches the user, thereby maintaining effective cutting performance while significantly improving user comfort and reducing fatigue.
Solution Approach 2:
The vibration isolation blocks provide beforehand cushioning by being pre-positioned between the vibration source and the user's hand. This prior cushioning arrangement ensures that vibration is attenuated before it can be transmitted to the user, allowing the tool to operate with high oscillation amplitudes and cutting forces without compromising user comfort or causing rapid fatigue.
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 damping system effectively reduces vibration transmission, enhancing tool stability and user comfort, thereby improving work efficiency and processing results while allowing for increased cutting efficiency without excessive vibration.
Implementation Method 1
a damping system (17) is provided between the first housing (111) and the second housing (112)... the damping system (17) effectively reduces vibration transmission
Data Source
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AI summary
Disclosed is a power tool including: a power assembly including a motor, the motor including a motor shaft rotatable about a motor axis; an output assembly including an output shaft; a transmission assembly; a first housing; a second housing; wherein the power tool is provided with a first vibration isolation plane and a second vibration isolation plane; the first vibration isolation plane is provided with a first vibration isolation block, and the second vibration isolation plane is provided with a second vibration isolation block; the whole composed of the first vibration isolation block and the second vibration isolation block is at least provided with a spacing portion between the first housing and the second housing; the second housing is spaced apart from the first housing at the spacing portion; the first vibration isolation block and the second vibration isolation block are separated from each other.