Power Tool Housing Axial Sliding Handle Vibration Absorption
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Solution Overview
Problem
Hand-held power tools face challenges in effectively absorbing vibrations and reducing rattling, leading to discomfort and potential damage during use, particularly due to the limitations of existing rotary handle designs that restrict handle size and stability.
Innovation Solution
The implementation of an elastically connected handle that slides axially with respect to the power tool body, featuring a closed-loop frame structure and sliding surfaces, which enhances vibration absorption and reduces rattling by allowing linear deformation and stable support, while also enabling a reduced handle size and improved rigidity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a rotary handle design is used, then the handle structure is simple, but the handle size is restricted and vibration absorption efficiency is reduced
Solution Approach 1:
The handle is designed to slide axially relative to the power tool body through a guide mechanism, transforming the static rotary connection into a dynamic linear sliding connection. This allows the handle to move in the axial direction to absorb vibrations while maintaining structural control through the guide
Solution Approach 2:
The handle connection is segmented into multiple functional components: the handle itself, the guide mechanism, and the elastic element. This segmentation allows each component to perform its specific function - the guide controls movement, the elastic element absorbs vibrations, and the handle provides user interface
2Object-affected harmful factors
If the spring constant of the elastic element is reduced, then vibration absorption is improved, but handle stability and rattling reduction are worsened
Solution Approach 1:
Sliding surfaces are introduced to provide lateral constraint in directions perpendicular to the sliding direction. This adds dimensional control - the elastic element handles axial vibration absorption while the sliding surfaces handle lateral stability, separating the functions across different spatial dimensions
Solution Approach 2:
The guide mechanism acts as an intermediary between the handle and the power tool body, providing controlled movement paths and lateral constraints. It mediates between the need for handle movement (vibration absorption) and the need for stability (rattling prevention)
3Object-affected harmful factors
If the handle is elastically connected to allow axial sliding, then vibration absorption is enhanced, but handle support stability is worsened
Solution Approach 1:
The connection between handle and power tool body is made dynamic through the guide mechanism, allowing controlled axial movement while maintaining lateral stability. The guide provides dynamic constraints that adapt to the handle's movement while preventing unwanted lateral displacement
Solution Approach 2:
The guide mechanism serves as an intermediary structure that receives the sliding movement of the handle and provides stable support. It mediates between the moving handle and the stationary power tool body, enabling vibration absorption while maintaining overall structural stability
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 solution effectively absorbs vibrations and reduces rattling in multiple directions, providing a comfortable user experience and increased durability by allowing the handle to move axially while maintaining stability, even with reduced spring constants.
Implementation Method 1
the elastic element can absorb vibration by linear deformation in the axial direction of the tool bit
Implementation Method 2
the elastic element can absorb vibration by linear deformation
Data Source
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AI summary
Power tool (1) comprising a motor (3) and an output section (5) driven by the motor (3), wherein a first housing (20) houses the motor (3) and is an assembly of components (23,24) wherein a second housing (21) houses the output section (5) at least in part and the first housing components (23,24) and the second housing (21) are directly and detachably connected to each other.