Handheld Power Tool Automatic Load Adjustment
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Solution Overview
Problem
Handheld power tools, such as rotary and chisel hammers, face inefficiencies due to manual adjustments of operating parameters, leading to speed drops during load states, which can irritate operators and reduce work efficiency.
Innovation Solution
An electronic device with a control unit automatically adjusts the drive unit's operating parameters based on the load state and actuation state of the switch element, using sensors and timers to optimize performance and user comfort, including automatic activation and deactivation of adjustment units.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If manual adjustment of operating parameters is used, then device complexity is reduced, but productivity decreases due to speed drops during load states
Solution Approach 1:
The electronic device automatically adjusts the operating parameter of the drive unit based on the load state of the hammer mechanism unit, eliminating the need for manual intervention. The control unit monitors the load state and autonomously modifies parameters to maintain optimal performance, thereby improving productivity without requiring complex manual adjustment mechanisms.
Solution Approach 2:
The system incorporates a feedback loop where the load state of the hammer mechanism unit is detected and used to automatically adjust the drive unit's operating parameter. This closed-loop control ensures that the system responds dynamically to changing conditions, maintaining high productivity while managing device complexity through automated feedback-based adjustment.
2Productivity
If automatic adjustment of operating parameter is implemented, then productivity is improved, but device complexity increases
Solution Approach 1:
The electronic device automatically adjusts the operating parameter of the drive unit based on the load state of the hammer mechanism unit, eliminating the need for manual intervention. The control unit monitors the load state and autonomously modifies parameters to maintain optimal performance, thereby improving productivity without requiring complex manual adjustment mechanisms.
Solution Approach 2:
The system incorporates a feedback loop where the load state of the hammer mechanism unit is detected and used to automatically adjust the drive unit's operating parameter. This closed-loop control ensures that the system responds dynamically to changing conditions, maintaining high productivity while managing device complexity through automated feedback-based adjustment.
3Ease of operation
If speed drops during load states are allowed, then device complexity is reduced, but user comfort deteriorates due to operator irritation
Solution Approach 1:
The electronic device automatically adjusts the operating parameter of the drive unit based on the load state of the hammer mechanism unit, eliminating the need for manual intervention. The control unit monitors the load state and autonomously modifies parameters to maintain optimal performance, thereby improving productivity without requiring complex manual adjustment mechanisms.
Solution Approach 2:
The system incorporates a feedback loop where the load state of the hammer mechanism unit is detected and used to automatically adjust the drive unit's operating parameter. This closed-loop control ensures that the system responds dynamically to changing conditions, maintaining high productivity while managing device complexity through automated feedback-based adjustment.
Data Source
Figure 1
Figure 2~3
AI summary
The invention relates to a hand-held power tool (10) with at least one impact unit (12) for generating an impulse on a tool (14), with at least one drive unit (16) for driving the at least one impact unit (12), with at least one electronic device (18) which includes at least one adjustment unit (20) for automatically adjusting at least one operating parameter of the at least one drive unit (16) depending on a load condition of the impact unit (12), and with at least one switching device (22) which has at least one switch element (24) for commissioning the at least one drive unit (16).It is proposed that the at least one electronic device (18) comprises at least one control unit (26) for controlling the at least one adjustment unit (20) depending on a maximum actuation state and/or a locked actuation state of the at least one switch element (24).