Staple Refill Casing Structure for Easier Cover Attachment
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Solution Overview
Problem
The existing staple-refill designs face challenges in efficiently attaching the cover member to the casing, leading to difficulties in production efficiency and potential casing breakage due to excessive strength or thinness of lateral plates.
Innovation Solution
The staple-refill incorporates a casing with a notch portion and guide boss system, allowing for easy attachment of the cover member through a guide portion and notch portion configuration, which guides the cover member in the insertion direction and prevents staple escape.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the lateral plate of the casing is made with excessively high strength, then the casing structural integrity is improved, but the lateral plate becomes hard to bend making it difficult to attach the cover member
Solution Approach 1:
The lateral plate is segmented into two distinct regions: a high-strength region for maintaining structural integrity and a thin-region for easy bending and cover member attachment. This segmentation allows each region to fulfill its specific function without compromise.
Solution Approach 2:
Different thickness qualities are applied to different locations of the lateral plate. The first lateral plate portion has a first thickness for strength, while the second lateral plate portion has a second thickness (smaller than the first) for flexibility and easy attachment of the cover member.
2Ease of manufacture
If the lateral plate is formed to have a thin thickness to be easily bent, then the cover member attachment is facilitated, but the molding ability is deteriorated and the casing is likely to be broken
Solution Approach 1:
The lateral plate is divided into multiple portions with different thicknesses, allowing the thin region to be bent easily for cover attachment while the thick region maintains overall casing strength and durability.
Solution Approach 2:
The lateral plate exhibits non-uniform thickness distribution, with the second lateral plate portion having reduced thickness specifically at the attachment zone to enable easy bending, while other portions maintain sufficient thickness for structural support.
3Strength
If the cover member attachment process is complicated, then the casing strength can be maintained, but the production efficiency is reduced
Solution Approach 1:
By segmenting the lateral plate into different thickness portions, the cover member attachment process is simplified to a straightforward engagement of the guide boss with the guide groove, eliminating complex assembly steps while maintaining casing strength through the thicker regions.
Data Source
AI summary
A staple-refill 11 is provided with: a casing 12 in which a plurality of sheet-type connected staples 10 are stacked; a staple inserting port 14; a staple discharge port 16; a cover member 15 which covers the sheet-type connected staples 10 in the casing 12 from a side of the staple inserting port 14; and a notch portion 18 formed in the casing 12 and extending from an edge of the staple inserting port 14 in an insertion direction.