Electric Stapler Posture Locking Mechanism
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Solution Overview
Problem
Existing electric stapler safety devices require manual intervention and take a long time to return to the initial state after cartridge replacement, as they need to reverse the driver unit and re-engage safety switches, complicating the process and reducing efficiency.
Innovation Solution
A safety device with a lock mechanism and detection switch that automatically locks and unlocks the driver unit's posture, allowing for seamless cartridge loading and replacement without additional safety switch manipulation, ensuring stability and efficiency by engaging and disengaging the detection switch based on the unit's posture.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the driver unit is reversed to load or replace the staple cartridge, then the cartridge replacement becomes possible, but the operation time increases due to manual safety switch manipulation
Solution Approach 1:
The detection switch automatically detects the driver unit's posture and controls the power supply state without requiring manual intervention. The system serves itself by using the lock mechanism's position to automatically switch between operable and inoperable states, eliminating the need for users to manually manipulate safety switches during cartridge replacement.
Solution Approach 2:
The detection switch provides feedback about the driver unit's posture (upright or reversed) to the control system. This feedback mechanism allows the power supply to be automatically controlled based on the current operational state, enabling the system to know when it is safe to operate and when cartridge replacement is in progress.
2Reliability
If a manual safety device is used to cut off power during cartridge replacement, then safety is improved, but the device complexity increases due to additional switch manipulation
Solution Approach 1:
The detection switch is integrated with the lock mechanism structure, combining the safety detection function with the existing mechanical posture control. This merging eliminates the need for separate manual safety switches while maintaining safety during cartridge replacement, as the same structural elements serve dual purposes.
3Stability of the object's composition
If the driver unit is locked in fixed postures with detection switch engagement, then operational stability is improved, but the ease of operation decreases due to automatic power cutoff
Solution Approach 1:
Instead of requiring the user to manually activate safety switches before cartridge replacement, the system inverts the logic by automatically detecting the driver unit's posture and controlling power supply accordingly. When the driver unit is in the reversed position for cartridge replacement, the power is automatically cut off, and when returned to the upright position, power is automatically restored.
Data Source
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AI summary
A slide frame is mounted on a driver unit that can be vertically reversed on a base frame. A guide pin disposed in the slide frame engages with a concave portion of a cam plate portion formed in the base frame. When a fixation releasing handle of the driver unit is operated, a lever pushes the slide frame to slide the slide frame and the guide pin is deviated from the concave portion to rotate the driver unit. In a state where the driver unit is fixed in a regular posture, since the guide pin is pushing a switch lever, the detection switch is kept turned ON and thus an electric stapler is in an operable state. When the driver unit is rotated, the switch lever is released from the press of the guide pin and the detection switch is turned OFF, thereby cutting off the power.