Stapler Anvil Piece Segmented Grooves for Thick Material Extraction

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Solution Overview

Problem

Existing stapler anvil pieces often cause staples to get stuck or deform when attempting to extract thicker objects, leading to incomplete binding and stability issues.

Innovation Solution

An anvil piece design featuring a crimp groove unit with blocking faces for bending staple legs and an export unit with exporting grooves for smooth extraction, allowing staples to slide out transversely without deformation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If the distance between the staple outlet and the anvil piece is set to the greatest thickness of objects that the stapler is expected to staple, then the stapler can handle thicker objects, but the staple often gets stuck in the crimp groove and cannot be extracted smoothly

Engineering Contradiction:
Improvethickness capacityVSAvoidextraction smoothness
Core Design Contradiction:
Adaptability or versatilityVSEase of operation

Solution Approach 1:

The anvil piece is segmented into two distinct functional units: a crimp groove unit for bending the staple legs and an export unit for facilitating extraction. This segmentation allows each unit to be optimized for its specific function, resolving the contradiction between handling thick objects and enabling smooth extraction.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The export unit acts as an intermediary between the crimp groove unit and the external environment. It provides a transition zone with an exporting face that guides the bent staple legs out of the stapler, preventing them from getting stuck while maintaining the ability to handle thick objects.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Stability of the object's composition

If the staple is crimped tightly to ensure firm binding, then the connection stability is improved, but the legs of the staple may be deformed when being pulled too hard

Engineering Contradiction:
Improvebinding stabilityVSAvoidstaple leg integrity
Core Design Contradiction:
Stability of the object's compositionVSStrength

Solution Approach 1:

The crimp groove unit features a blocking face with specific geometry that applies localized pressure to bend the staple legs along a controlled guiding path. This localized action ensures tight crimping for stable binding while preventing excessive deformation that would compromise staple leg integrity during extraction.

Inventive Principle:
Principle #3Local quality

3Strength

If the crimp groove is designed to securely hold the staple legs, then the binding strength is improved, but the stapled objects cannot be extracted from the stapler smoothly

Engineering Contradiction:
Improvebinding strengthVSAvoidextraction ease
Core Design Contradiction:
StrengthVSEase of operation

Solution Approach 1:

The design transitions from a static crimp groove to a dynamic extraction path. The export unit provides a sloped exporting face that actively guides the bent staple legs outward during extraction, transforming the static holding function into a dynamic extraction process that maintains binding strength while enabling smooth removal.

Inventive Principle:
Principle #15Dynamics

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

Enables smooth extraction of stapled objects without deformation, ensuring stable connection and preventing staples from getting stuck, even with thicker materials.

Implementation Method 1

each said blocking face is for blocking the leg and making the leg bend along the guiding path

Methodology Applied
Scientific EffectMechanical Force: Mechanical Force

Implementation Method 2

each said exporting face is for the leg which is bent to abuttingly slide therealong

Methodology Applied
Scientific EffectFriction: Friction

Data Source

PatentUS10632603B2Anvil piece of stapler
Publication Date: 2020.04.28 APEX MFG CO LTD
  • US10632603B2 patent drawing
  • US10632603B2 patent drawing
  • US10632603B2 patent drawing

AI summary

An anvil piece of a stapler is provided, including a main body, a crimp groove unit recessed on the main body and including at least one crimp groove, and an export unit. Each said crimp groove is for receiving a leg of a staple and has a blocking face which extends along a guiding path, and each said blocking face is for blocking the leg and making the leg bend along the guiding path; the export unit is recessed on the main body and communicates with the crimp groove unit on an extraction direction, the extraction direction is transverse to the guiding path and away from the crimp groove unit, the export unit includes at least exporting groove, each said exporting groove has an exporting face, and each said exporting face is for the leg which is bent to abuttingly slide therealong.