Power Tool Attachment Connecting Portion Oscillation Stability
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Solution Overview
Problem
Current power tools experience unreliable engagement with working attachments, leading to loose connections and reduced operational effectiveness.
Innovation Solution
The design incorporates a connecting portion with multiple driven points and a step structure that allows the working attachment to oscillate around a central axis, featuring a top seat for fixation, a bottom seat with a hole for the central axis, and a driven structure with points that receive the driving force, ensuring secure engagement and stable operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a single driven point is used for connecting the working attachment with the power tool, then the structure is simple, but the engagement is unreliable and easily becomes loose
Solution Approach 1:
The connecting portion is divided into multiple driven points (at least two) instead of using a single driven point. These driven points are distributed on a cylindrical surface or plane, allowing the power tool to engage with multiple points simultaneously, thereby improving engagement reliability while maintaining reasonable structural complexity
Solution Approach 2:
The driven points are arranged in a three-dimensional configuration (on a cylindrical surface or plane perpendicular to the central axis) rather than in a single plane. This spatial distribution allows for more reliable engagement by distributing the driving force across multiple points in different locations, resolving the contradiction between reliability and complexity
2Stability of the object's composition
If the driven points are located at the ends of the connecting portion, then the structure is simple, but the oscillation stability is poor
Solution Approach 1:
Different regions of the connecting portion are assigned different functions: the top seat provides fixation in the axial direction, the bottom seat connects the working portion, and the driven structure (with driven points) located between them receives the driving force. This functional differentiation improves oscillation stability while maintaining clear structural organization
Solution Approach 2:
The driven points are positioned in a plane perpendicular to the central axis, between the upper and lower ends of the connecting portion. This intermediate positioning, rather than at the extreme ends, provides better balance and stability during oscillation while distributing the mechanical stresses more effectively
Data Source
AI summary
A working attachment for a power tool is provided. The working attachment is able to be driven by the power tool to oscillate around a central axis. The working attachment includes a working portion for realizing a function of the working attachment and a connecting portion for connecting the working attachment with the power tool. The connecting portion includes at least two driven points for receiving a driving force of the power tool. The at least two driven points are disposed in a plane which is substantially perpendicular to the central axis and located between an upper end and a lower end of the connecting portion in a direction of the central axis.