Handheld Power Tool Illumination Device with Acceleration Sensor Feedback
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Solution Overview
Problem
Handheld power tools lack effective feedback mechanisms to ensure proper tool alignment and stability during operation, leading to suboptimal performance and increased risk of errors.
Innovation Solution
Integration of an acceleration sensor-connected illumination device that varies light patterns and intensity based on tool movement, providing intuitive feedback to the user through a directional and adjustable light cone to indicate steadiness and optimal processing conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a light-emitting diode is provided at the tool tip to illuminate the workpiece, then the user can see the workpiece better, but the user receives no feedback about tool stability or alignment
Solution Approach 1:
The patent applies feedback by connecting the illumination device to an acceleration sensor, which detects tool movements and feeds this information back to the user through dynamic light variations. The light intensity, color, or pattern changes based on detected accelerations, providing real-time feedback about tool stability and alignment during operation.
Solution Approach 2:
The patent utilizes color changes as a visual feedback mechanism. The illumination device can change the color of emitted light (e.g., from green to red) based on acceleration sensor data, indicating different states of tool stability or alignment. This allows the user to intuitively understand tool status without additional displays or indicators.
2Device complexity
If the illumination device provides only basic lighting, then the device structure remains simple, but the user cannot receive additional operational information
Solution Approach 1:
The illumination device is designed to perform multiple functions: it provides basic workpiece illumination while simultaneously serving as an information display for tool status, stability feedback, and alignment guidance. By integrating sensor connectivity and control circuitry, the same hardware component delivers both lighting and feedback functions, avoiding the need for separate indicator lights or displays.
Solution Approach 2:
The illumination device transitions from a static lighting source to a dynamic information channel. The light characteristics (intensity, color, pattern) vary dynamically based on real-time acceleration data, allowing the system to convey multiple states and information levels through a single adaptable component without adding substantial structural complexity.
3Illumination intensity
If the light cone is fixed and narrow, then the processing location is well focused, but the user cannot perceive tool orientation or alignment issues
Solution Approach 1:
The light cone characteristics become dynamic rather than fixed. Based on acceleration sensor data indicating tool orientation and stability, the system adjusts the light cone angle, direction, or distribution pattern. This allows the illumination to adapt to different operational states, providing both focused lighting when stable and expanded lighting when alignment issues are detected.
Solution Approach 2:
The system adds a temporal and informational dimension to the light cone. Instead of a static spatial illumination pattern, the light cone varies in intensity, angle, and distribution over time based on detected tool movements and orientation, encoding additional information about tool state into the illumination pattern itself.
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
Enhances user awareness of tool stability and optimizes workflow by providing real-time visual cues, reducing errors and improving operational efficiency.
Implementation Method 1
the illumination device is connected to an acceleration sensor and varies the generated light depending on acceleration values or movements of the handheld power tool which are detected by the acceleration sensor
Implementation Method 2
the means comprise a light-emitting diode array whose light-emitting diodes are actuable independently of one another with regard to their brightness
Implementation Method 3
the illumination device comprises means for directing the light cone... the light cone can provide information if the light cone is directed away from the tip of the tool
Implementation Method 4
the means comprise at least one in particular displaceable lens whose transparency is variable for influencing the light cone... the light cone is narrowed in order to focus the location to be processed
Implementation Method 5
the means comprise at least one reflector that is displaceable for influencing the light cone
Data Source
AI summary
A handheld power tool, in particular an electric handheld power tool, includes an actuable drive device configured to drive a tool and an illumination device. The illumination device is connected to an acceleration sensor and varies its generated light depending on movements of the handheld power tool that are detected by the acceleration sensor.