Stapler Anvil Rail Guidance for Stable Leg-Flatting
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Solution Overview
Problem
Conventional staplers with leg-flatting devices face issues such as gaps between fixed anvils and staples leading to poor leg-flatting effects, and slidable anvils are prone to instability due to lack of support, resulting in limited design range and potential blockages.
Innovation Solution
A stapler design featuring a supporting base with a rail assembly that securely holds and stabilizes a slidable anvil element, allowing it to move smoothly along rails, while keeping the non-functional segment covered to prevent obstruction and allowing for greater design flexibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a fixed anvil element is used in the leg-flatting device, then the structure is simple, but there is a gap between the anvil and staple causing poor leg-flatting effect
Solution Approach 1:
The anvil element is changed from a fixed structure to a slidable structure along the guiding channel. This dynamic configuration allows the anvil to move and adapt to different staple positions, eliminating the gap between the anvil and staple while maintaining structural simplicity through the use of a straightforward sliding mechanism within the guiding channel.
2Manufacturing precision
If a slidable anvil element is used to eliminate gaps, then leg-flatting quality improves, but the anvil becomes unstable and prone to inclination
Solution Approach 1:
A guiding channel is introduced as an intermediary structure between the supporting base and the slidable anvil element. The guiding channel provides lateral guidance and constraints that prevent the anvil from inclining or deviating from its intended path, thereby ensuring stability while allowing the anvil to slide freely in the direction needed for effective leg-flatting.
3Ease of operation
If the non-functional segment of the anvil is exposed from the guiding channel, then the anvil can slide, but it is easily blocked by objects causing unstable movement
Solution Approach 1:
The non-functional segment of the anvil element is nested within the guiding channel, while only the functional segment (the top portion) is exposed for staple engagement. This nesting arrangement ensures that the non-functional segment remains protected from external objects and blockages, maintaining reliable and stable movement of the anvil during operation.
4Stability of the object's composition
If the anvil must have sufficient width to be held in the guiding channel, then stability is improved, but the sizes of other stapler elements are limited
Solution Approach 1:
The guiding channel is designed with specific dimensional characteristics that provide adequate guidance and stability for the anvil element without requiring the entire anvil to have excessive width. The guiding channel's geometry is optimized to constrain the anvil laterally while allowing the rest of the anvil structure to maintain appropriate dimensions for other stapler components, thereby preserving design flexibility.
Data Source
AI summary
A stapler has a supporting base, a magazine assembly, a trigger assembly, a leg-flatting device and a rail assembly. The magazine assembly and the trigger assembly are connected pivotally to the supporting base. The leg-flatting device is mounted on the supporting base and has a moving base and an anvil element. The moving base is connected operationally to the supporting base and has an anvil hole. The anvil element is mounted moveably in the anvil hole and has a functional segment and a non-functional segment. The rail assembly mounted on and protrudes from the bottom face of the supporting base and has at least one rail bracket protruding from the bottom face of the supporting base. Each one of the at least one rail bracket has a rail in which the non-functional segment of the anvil element is slidably mounted.