Power Tool Dynamic Vibration Reducer Integration
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Solution Overview
Problem
Conventional power tools with dynamic vibration reducers often increase in size due to the separate components required for vibration reduction, necessitating a solution for size reduction while maintaining effective vibration mitigation.
Innovation Solution
A power tool design with a dynamic vibration reducer that integrates the weight and elastic element housing space within the tool's structure, utilizing pressure fluctuations from a crank mechanism to actively drive the weight and reduce vibration, thereby eliminating the need for additional driving means and simplifying the design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a dynamic vibration reducer is installed in a power tool, then vibration caused during operation is reduced, but the size of the power tool increases
Solution Approach 1:
The patent merges the dynamic vibration reducer with the existing housing structure by utilizing the handgrip as the vibration reducer housing. The weight and elastic element are housed within the handgrip's internal space, eliminating the need for a separate vibration reducer housing and thereby preventing increase in overall tool size.
Solution Approach 2:
The handgrip serves dual functions: as the user's grip interface and as the housing for the dynamic vibration reducer. This multi-functionality allows the vibration reduction components to be accommodated without requiring additional space beyond what is already allocated for the handgrip.
2Reliability
If a separate cylindrical element is used to house the weight and elastic element, then the dynamic vibration reducer functions properly, but the number of parts increases and installation becomes more complex
Solution Approach 1:
The housing for the dynamic vibration reducer is merged with the handgrip structure. Instead of using a separate cylindrical element, the handgrip itself becomes the housing, reducing the number of discrete parts and simplifying the overall assembly.
Solution Approach 2:
The handgrip is segmented into functional zones: the internal cavity houses the weight and elastic element, while the external surface maintains ergonomic grip features. This segmentation allows the vibration reducer components to be integrated without compromising the handgrip's primary function.
3Volume of moving object
If the dynamic vibration reducer is integrated into the housing, then size is reduced, but installation and maintenance difficulty increases
Solution Approach 1:
The handgrip is designed as a detachable segment from the main housing. This segmentation allows the dynamic vibration reducer components to be accessed by simply removing the handgrip, maintaining ease of installation and maintenance while keeping the overall tool size compact.
Solution Approach 2:
The handgrip assembly is designed with dynamic accessibility - components can be easily accessed and serviced by detaching the handgrip from the main housing. This dynamic design approach allows maintenance operations without requiring complete disassembly of the tool.
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 approach reduces the number of parts, allows for easier installation and maintenance, enhances durability by preventing wear and noise, and effectively minimizes vibration without increasing the tool's size, while also reducing power consumption.
Implementation Method 1
an elastic element which connects the weight to the cylindrical element
Implementation Method 2
vibration is caused in the axial direction of the tool bit when the tool bit is driven. Therefore, some conventional power tools are provided with a vibration reducing mechanism for reducing vibration caused when the tool bit is driven.
Implementation Method 3
a dynamic vibration reducer which serves to reduce vibration caused in the axial direction when the tool bit is driven, and the dynamic vibration reducer includes a dynamic vibration reducer body in the form of a cylindrical element, a weight which is housed within the cylindrical element and allowed to move in the axial direction of the tool bit
Data Source
Figure 1
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Figure 3
AI summary
The power tool (101) performs a predetermined operation on a workpiece at least by axial linear movement of a tool bit (119) coupled to a front end region of a housing (103). The power tool includes driving mechanisms (113, 115) that are housed within the housing (103) and linearly drives the tool bit (119), and a dynamic vibration reducer (151) that has a weight (153) which is allowed to linearly move under a biasing force of an elastic element, and reduces vibration caused during operation, by movement of the weight (153) in the axial direction of the tool bit. A dynamic vibration reducer housing space (149) for housing the weight (153) and the elastic element of the dynamic vibration reducer (151) is integrally formed with the housing (103).