Electric Stapler Automatic Reset Mechanism for Stuck Staples
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Solution Overview
Problem
Conventional staplers face issues with the staple channel not resetting automatically when a staple is stuck, making it difficult to clear away the failed staple.
Innovation Solution
An electric stapler with a drive assembly that includes a power unit and an execution component, allowing the staple pressing plate assembly to be raised and separated from the staple channel assembly, enabling the removal of the stuck staple and automatic resetting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a conventional stapler uses manual force to rotate the ejector and staple channel assembly, then the stapler can perform binding operations, but the staple channel cannot reset automatically when a staple is stuck and it is difficult to clear away a failed staple
Solution Approach 1:
The patent replaces the manual mechanical operation system with an electric drive system. A motor (power unit) drives a transmission mechanism that automatically rotates the staple channel assembly and pressing plate assembly, eliminating the need for manual pressing and enabling automatic resetting when staples are stuck.
Solution Approach 2:
The electric stapler performs self-service through automatic resetting. When a staple is stuck, the motor continues to rotate the staple channel assembly, and the pressing plate assembly automatically separates from the staple channel, allowing the stuck staple to be cleared without manual intervention.
2Reliability
If the staple pressing plate assembly remains in contact with the staple channel assembly during operation, then stapling function is maintained, but the failed staple cannot be removed when stuck
Solution Approach 1:
The pressing plate assembly is designed to be dynamically movable relative to the staple channel assembly. During normal stapling, the pressing plate maintains contact with the staple channel. When a staple is stuck, the continuous rotation of the staple channel assembly causes the pressing plate to automatically separate, enabling staple removal.
Solution Approach 2:
The motor drives the staple channel assembly and pressing plate assembly in periodic rotational cycles. This periodic motion ensures that during each cycle, the pressing plate separates from the staple channel at specific phases, allowing stuck staples to be cleared while maintaining stapling function during other phases.
3Productivity
If manual force is continuously applied to operate the stapler, then the binding operation can be completed, but the stapler cannot return to initial state automatically
Solution Approach 1:
The manual mechanical reset process is replaced by an electric motor-driven automatic reset system. After each stapling operation, the motor automatically rotates the staple channel assembly back to its initial position, and the pressing plate assembly automatically returns to its starting position, eliminating the need for manual resetting and reducing time loss.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Facilitates easy removal of stuck staples and automatic resetting of the staple channel, improving maintenance efficiency and enabling continuous stapling operations.
Implementation Method 1
the drive assembly includes a power unit and an execution component connected to the power unit
Implementation Method 2
an elastic strip is compressed, and accordingly the staple may be driven to move downwards... the elastic strip may spring back, and the staple, the fixture, the ejector and the end cover may be raised back under the action of the elastic force
Implementation Method 3
an end cover spring is compressed... the springback of the end cover spring allows the ejector and the end cover to be raised back further
Implementation Method 4
The expansion of a push-travel spring drives the staple to be fed again
Data Source
AI summary
An electric stapler includes a base and a press portion articulated to the base. The press portion is provided with, from down to up, a staple channel assembly configured to receive a staple, a staple pressing plate assembly configured to press the staple and a drive assembly in sequence. The position of the drive assembly is fixed relative to the press portion. The staple channel assembly and the staple pressing plate assembly are rotatable relative to the press portion. The drive assembly includes a power unit and an execution component connected to the power unit to press or raise the staple pressing plate assembly. The above electric stapler addresses the technical issues that the staple channel cannot reset automatically after the staple is stuck and it is difficult to clear away a failed staple.