Electric Scissors Blade Closure and Sleep Mode Control
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Solution Overview
Problem
Electric scissors pose safety hazards during storage due to their open blade configuration and experience reduced functionality and efficiency due to blade wear over time.
Innovation Solution
The design incorporates a control unit that manages the blades' operation through a power-off, power-on mechanism, sleep mode, and exceptional event handling, utilizing a trigger input device to control the blades' movement, issuing audible and visual prompts, and featuring a counter for blade replacement alerts, ensuring safe storage and extended tool life.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the blades remain in an opened state for easy access and operation, then the ease of operation is improved, but the safety hazard during carrying and storage increases
Solution Approach 1:
The control unit automatically closes the blades before powering off the electric scissors, and automatically opens the blades upon power-on. This preliminary action ensures blades are in a safe closed state during storage while maintaining ease of operation during use, resolving the contradiction between safety and operational convenience
2Ease of operation
If the electric scissors are powered on continuously for immediate use, then the ease of operation is improved, but the energy consumption increases
Solution Approach 1:
The electric scissors implement periodic action by entering sleep mode after a period of inactivity (first predetermined time without input device operation) and automatically waking up when needed. This reduces energy consumption during storage while maintaining operational readiness when required, resolving the contradiction between ease of operation and energy consumption
3Productivity
If the blades are used continuously for productivity, then the productivity is improved, but the blade wear increases reducing reliability
Solution Approach 1:
The control unit monitors the operational status and implements feedback mechanisms including sleep mode activation after periods of inactivity and automatic blade closing before power-off. This feedback system manages blade usage patterns to reduce unnecessary wear while maintaining productivity, and provides prompts to users about blade replacement needs
Data Source
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AI summary
Disclosed are electric scissors, comprising two blades, a driving unit, a control unit, and an input device. The control unit controls, in response to a power-off instruction input by a user using the input device, the driving unit to close the two blades relative to each other and then power off the electric scissors. The power-off instruction comprises pressing the input device and keeping the input device in a pressed state for a time required for power-off. In a normal working mode, if the control unit does not detect, within a predetermined time, that the user operates the input device, the electric scissors enter a sleep mode. The electric scissors further comprise a counter configured to record the number of cuttings of a blade, and when the number of cuttings reaches a predetermined number, the control unit controls the electric scissors to issue an audibly and/or visually perceptible prompt. The control unit resets the counter in response to a reset instruction input by the user using the input device.