Integrated Metal Staple Leg Support in Resin Case
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Solution Overview
Problem
Conventional staplers with separate metal staple leg support members and resin case components lead to poor paper insertion due to exposed grooves and steps, and buckling of staple legs during penetration, as the staple leg support member is not adequately supported.
Innovation Solution
A stapler design where the staple leg support member, made of metal, is integrated beneath the resin clamping portion, guiding staple legs without exposure on the surface, preventing paper catch and buckling by supporting staple legs internally.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a separate metal staple leg support member is provided on a resin case, then staple legs can be supported, but grooves and steps are exposed on the clamping portion surface causing poor paper insertion
Solution Approach 1:
The staple leg support member is integrated into the resin case as a unified structure rather than being a separate component. The support member protrudes from the inner surface of the clamping portion, creating a seamless integration that eliminates exposed grooves and steps between separate components while maintaining staple leg support functionality.
2Device complexity
If the staple leg support member is not provided, then the structure is simpler, but staple legs cannot be sufficiently supported causing buckling
Solution Approach 1:
The resin case is designed with a localized protrusion structure that provides staple leg support only where needed. This local reinforcement approach maintains overall structural simplicity while providing targeted support to prevent staple leg buckling during the stapling operation.
3Ease of manufacture
If separate components (case and staple leg support member) are used, then manufacturing is easier, but boundaries create exposed grooves and steps
Solution Approach 1:
The staple leg support member and resin case are designed as integrated components where the support member forms an integral part of the case structure. This integration eliminates the boundary between separate components, removing exposed grooves and steps from the clamping portion surface while maintaining ease of manufacture through unified molding or attachment processes.
Data Source
AI summary
The staple receiving portion includes a clamping portion exposed to the paper clamping portion and configured to clamp the sheets of paper, and a staple guide portion provided on an end portion of the clamping portion at a side thereof, on which the staple striking portion is located, and configured to guide the staple struck by the staple striking portion. The clamping portion is made configured of a resin material. The staple guide portion includes a staple leg support member provided on a side of the clamping portion opposite to a side thereof, on which the sheets of paper are clamped, and configured to support the staple legs of the staple struck by the staple striking portion, and a guide member provided to oppose the staple leg support member, the staple leg support member and the guide member are made configured of a metal material.