Power Tool Status Lighting for Fastening Feedback
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Solution Overview
Problem
Power tools face challenges in accurately and conveniently illuminating workpieces and reporting the success of operations, often leading to incorrect operations being overlooked.
Innovation Solution
A power tool design incorporating a housing with a drive system, sensors to measure torque or rotational values, and a light unit controlled by a control unit to indicate operation success through varying light colors based on predetermined values.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a headlight is used to illuminate the workpiece, then the workpiece location can be identified, but the operation status cannot be indicated
Solution Approach 1:
The light unit is designed to perform multiple functions: it illuminates the workpiece during operation and simultaneously displays operation status through different light colors. The control unit receives drive system data and changes the light unit's color to indicate successful or unsuccessful operations, allowing one component to serve dual purposes without requiring separate indication devices
Solution Approach 2:
The light unit acts as an intermediary between the drive system and the user. Instead of requiring direct observation of drive system parameters or separate indicator devices, the light unit translates drive system operation status into visual light color changes that are easily observable and provide immediate feedback to the user
2Productivity
If the user operates the tool without visual feedback, then the operation can be performed quickly, but incorrect operations may be overlooked
Solution Approach 1:
The system implements immediate visual feedback by changing the light unit's color based on drive system performance. The control unit continuously monitors drive system data and provides real-time feedback through light color changes, allowing users to instantly verify whether operations were successful without slowing down workflow or requiring additional inspection steps
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
Ensures accurate and consistent illumination and reporting of operation success, preventing incorrect operations by providing clear visual feedback through light color changes.
Implementation Method 1
a light unit positioned on a front end of the housing and configured to direct light to the workpiece
Data Source
AI summary
A power tool is provided. The tool has a housing containing an internal drive system that drives an output member that engages a workpiece and exerts mechanical force thereupon. A force sensor and a positional sensor are operatively connected to the drive system to sense characteristic variables of the drive system during engagement of the workpiece. A light unit is positioned on a front end and a top portion of the housing so as to be able to direct light of various colors onto the workpiece. A control unit is operatively connected to the drive system and the light unit so as to control the light unit based on the characteristic variables of the drive system measured by the sensors. The light unit may illuminate a colored light on the workpiece depending on whether or not the workpiece was determined to be fastened according to predetermined specifications.