Electric Power Tool Handle Grip Detection Motor Control
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Solution Overview
Problem
Existing electric power tools do not ensure stable handling, as they can be used without the handle being gripped, leading to potential accidents or inefficiencies.
Innovation Solution
The electric power tool is designed to prohibit motor rotation when the handle is not gripped, featuring a configuration with a handle, power transmission mechanism, and a detection system that allows rotation only when the handle is properly gripped by the user.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the electric power tool allows motor rotation without handle gripping detection, then the ease of operation is improved, but the safety and stable handling deteriorate
Solution Approach 1:
A handle gripping detection mechanism acts as an intermediary between the user's gripping action and the motor rotation control. The detection mechanism includes a detection unit that senses whether the handle is being gripped and transmits this information to the control unit, which then decides whether to allow motor rotation. This intermediary system ensures that motor rotation is permitted only when proper handle gripping is detected, thereby maintaining both ease of operation and stable handling.
2Reliability
If the electric power tool prohibits motor rotation when handle is not gripped, then the safety and stable handling are improved, but the ease of operation deteriorates
Solution Approach 1:
The system implements a feedback loop where the handle gripping detection unit continuously monitors the gripping state and provides real-time feedback to the control unit. When the detection unit senses that the handle is being properly gripped, it sends a signal to the control unit to enable motor rotation. When gripping is released or improper, the feedback signal triggers the control unit to prohibit motor rotation. This feedback mechanism ensures safety while maintaining operational ease through automatic state-dependent control.
Data Source
AI summary
The disclosure discloses an electric power tool. The electric power tool may include a motor, a power transmission mechanism connected to the motor, a housing that houses the motor and the power transmission mechanism, an end tool holder to which an end tool is configured to be attached and from which the end tool is configured to be detached, and connected to the power transmission mechanism, and a handle attached to the housing. The electric power tool may be configured to prohibit rotation of the motor when a user is not gripping the handle.