Flat-clinch Stapler Buffering Device for Staple Flattening
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Solution Overview
Problem
Conventional flat-clinch staplers with high elastic moving board springs provide inadequate flat-clinching effect when stapling few sheets of paper, leading to user misjudgment due to the inability to overpower the spring's force effectively, resulting in incomplete staple flattening.
Innovation Solution
Incorporating a buffering device with a protrusion, block, and elastic member between the moving board and base, allowing the user to overpower the elastic force of the buffering device instead of the conventional spring, ensuring complete staple flattening by providing a specific position indicator for the flat-clinching procedure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the moving board spring has high coefficient of elasticity to achieve good flat-clinching effect when stapling 40 sheets of paper, then the flat-clinching effect for thick paper bundles is improved, but the flat-clinching effect deteriorates when stapling few sheets of paper
Solution Approach 1:
The patent introduces a movable block that can change position along the moving board's pivoting path. The block is driven by a protrusion on the moving board and constrained by a limiting groove. This dynamic positioning allows the block to provide different levels of resistance depending on the paper thickness, enabling the stapler to adapt between stapling few sheets and thick bundles of 40 sheets
Solution Approach 2:
The patent changes the elastic parameter by replacing the single high-coefficient moving board spring with a buffering device containing an elastic member. This elastic member provides a more gradual and controllable elastic force that can accommodate both light and heavy stapling tasks, resolving the contradiction between needing high elasticity for thick papers and avoiding excessive force for few sheets
2Reliability
If the user applies strong force to overcome the moving board spring's elastic force to ensure complete flat-clinching, then the flat-clinching effect is improved, but the ease of operation deteriorates due to user misjudgment
Solution Approach 1:
The patent implements feedback through the block's visual position indicator. As the moving board pivots downward, the block moves along the limiting groove and provides visual feedback on the compression status of the elastic member. When the block reaches a specific position indicating sufficient compression, the user knows to stop pressing, eliminating misjudgment and making operation easier while ensuring reliable flat-clinching
3Manufacturing precision
If the moving board spring has high elastic force to ensure complete staple flattening, then the manufacturing precision of flat-clinching is improved, but the difficulty of detecting and measuring the completion position increases due to user misjudgment
Solution Approach 1:
The patent uses visual indication (analogous to color change principle) through the block's position along the limiting groove. The block's location provides a clear visual signal of the compression state, making it easy to detect when the elastic member is sufficiently compressed and the flat-clinching is complete, thereby improving completion position detection while maintaining high precision
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
The buffering device ensures accurate and complete staple flattening by allowing the user to overpower the elastic force of the buffering device, preventing user misjudgment and providing a smooth, non-abrupt stapling experience when stapling few sheets of paper.
Implementation Method 1
The elastic member abuts the block and the base. When the moving board is pivoted, the block is driven by the protrusion to move.
Data Source
AI summary
A flat-clinch stapler has a base, a magazine assembly, a handle device, a flat-clinch device and a buffering device. The magazine assembly and the handle device are pivotally connected with the base. The flat-clinch device has a slider and a moving board. The slider is slidably mounted on the base. The moving board is mounted above the slider and is pivotally connected with the base. The buffering device has a protrusion, a block and an elastic member. The protrusion is securely disposed on the moving board. The block is slidably mounted on the base and abuts the protrusion. The elastic member abuts the block and the base. When the moving board is pivoted, the block is driven by the protrusion to move.