Stapler Ejection Offset Clears Convex Object Features
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Solution Overview
Problem
Conventional staplers face difficulties in stitching objects with convex portions, as the staple ejection unit often interferes with the convex features, preventing effective stapling, especially when the convex portion is on the staple ejection unit side.
Innovation Solution
A stapler design featuring a staple ejection unit with an ejection surface that protrudes from a base surface, allowing the staple to be ejected and penetrate the object while the stitching unit bends the staple legs, with a driving unit that moves both units in a direction close to and away from each other along a first direction, accommodating convex portions by maintaining a recessed area between the ejection and base surfaces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the staple ejection unit and stitching unit are moved close to each other to stitch an object, then the stitching function is achieved, but the convex portion on the object interferes with the staple ejection unit or stitching unit, preventing proper stitching
Solution Approach 1:
The ejection surface is protruded in the direction of the bending surface along the first direction, creating a dimensional offset that allows the staple ejection unit to clear convex portions on the object while maintaining stitching capability. This dimensional change enables the staple to be ejected from a position that avoids interference with the convex portion.
Solution Approach 2:
The ejection surface is locally protruded relative to the base surface, creating a specific geometric feature that addresses the interference problem. This localized modification allows the staple ejection unit to adapt to objects with convex portions while the rest of the structure remains unchanged.
2Adaptability or versatility
If the staple ejection unit is designed with a protruding ejection surface, then objects with convex portions can be stitched without interference, but the device complexity increases
Solution Approach 1:
Only the ejection surface is protruded relative to the base surface, creating a minimal structural modification. This localized change provides the necessary adaptability for convex objects without requiring complex redesign of the entire staple ejection unit or stitching unit.
Solution Approach 2:
The protrusion of the ejection surface in the direction of the bending surface creates a simple dimensional offset that solves the interference problem. This straightforward geometric modification avoids the need for complex mechanisms or additional components.
Data Source
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AI summary
A stapler (1A) includes a staple ejection unit (2A) configured to eject a staple and cause the staple to penetrate an object, a stitching unit (3A) configured to bend staple legs of the staple penetrating the object, and a driving unit (4A) configured to move the staple ejection unit (2A) in a direction close to and away from the stitching unit (3A) along a first direction (A1). The staple ejection unit (2A) has an ejection surface (20) from which the staple is ejected, and a base surface (21) located between the ejection surface (20) and the driving unit (4A), the stitching unit (3A) has a bending surface (30) facing the ejection surface (20) and configured to bend the staple legs, and the ejection surface (20) protrudes with respect to the base surface (21) in the direction of the bending surface (30) along the first direction (A1).