Auxiliary Handle Grip Sensor for Power Tool Reaction Force Control
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Solution Overview
Problem
Power tools face challenges in effectively managing reaction forces during machining operations, as existing auxiliary handles do not provide adequate feedback or control mechanisms to optimize tool handling and operation.
Innovation Solution
An auxiliary handle system for power tools, featuring a grip sensor and signal output unit to detect grip status and an attachment sensor for the power tool to control rotation based on handle attachment, ensuring optimal reaction force management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If an auxiliary handle is attached to the power tool to receive reaction force, then operator control and safety are improved, but the device complexity increases due to additional sensors and control mechanisms
Solution Approach 1:
The patent implements feedback mechanisms through grip sensors that detect whether the operator is holding the auxiliary handle, and attachment sensors that detect whether the handle is properly attached to the power tool. This feedback enables the control unit to adapt the operational characteristics of the power tool, improving safety and control while managing complexity through intelligent sensor integration.
Solution Approach 2:
The system employs self-service principles by using automatic detection and control adjustment without requiring manual intervention. The grip sensor and attachment sensor automatically monitor the operational state, and the control unit automatically adjusts the power tool's characteristics based on sensor input, reducing the need for complex manual control systems.
2Loss of information
If grip sensors and attachment sensors are added to detect handle attachment and grip status, then real-time feedback is improved, but the device complexity and manufacturing cost increase
Solution Approach 1:
The patent implements feedback mechanisms through grip sensors that detect whether the operator is holding the auxiliary handle, and attachment sensors that detect whether the handle is properly attached to the power tool. This feedback enables the control unit to adapt the operational characteristics of the power tool, improving safety and control while managing complexity through intelligent sensor integration.
Solution Approach 2:
The patent replaces complex mechanical monitoring systems with electronic sensors. Instead of using mechanical switches or physical indicators to detect handle attachment and grip status, the system uses electronic grip sensors and attachment sensors that provide more reliable and versatile detection capabilities with simpler overall system architecture.
3Ease of operation
If the control unit adapts operational characteristics based on sensor detection, then handling and safety are improved, but the loss of time for system adaptation and processing occurs
Solution Approach 1:
The patent applies preliminary action by having the control unit continuously monitor sensor status and pre-adapt operational characteristics before full operation begins. The system detects handle attachment and grip status in advance, allowing it to adjust operational parameters proactively rather than reactively, minimizing delays during actual operation.
Solution Approach 2:
The control unit continuously processes sensor data and maintains adaptive control throughout operation, ensuring that the system remains in an optimized state without requiring periodic re-adjustments or interruptions. This continuous adaptation eliminates downtime and maintains ease of operation throughout the power tool's usage cycle.
Data Source
AI summary
A power tool receives a reaction force with an auxiliary handle attached to the power tool. An auxiliary handle attachable to a power tool includes a first arm, a second arm that fastens, together with the first arm, at least a part of the power tool located between the first arm and the second arm, a handle, a grip sensor that detects the handle being gripped with the first arm and the second arm fastening at least the part of the power tool in between, and a signal output unit that outputs, to the power tool, a grip signal indicating that the handle is gripped based on a detection signal from the grip sensor.