Connection Fastener Structure for Stable Holding of Short Fasteners
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Solution Overview
Problem
Existing connection fasteners struggle to stably hold short fasteners due to a fixed width connection band, leading to buckling and restricted fastener lengths when used with driving tools.
Innovation Solution
A connection fastener design featuring a sheet-shaped connection portion with separate attaching portions that cover the fasteners' leading ends, including first and second holding portions with specific hole diameters and slit widths, and a C-shaped configuration to support the fasteners' head and tapered ends, allowing for stable holding regardless of fastener length.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a fixed width connection band is used to connect fasteners, then the connection fastener can be used with driving tools according to tool specifications, but short fasteners cannot be stably held and may buckle
Solution Approach 1:
The connection band is divided into separate functional sections: upper holding portions for head portions, lower holding portions for shanks, and attaching portions for leading end portions. This segmentation allows each section to independently support different parts of fasteners of varying lengths, resolving the contradiction between fixed specification compatibility and reliable holding of short fasteners.
Solution Approach 2:
Attaching portions are introduced as intermediary elements that connect to the leading end portions of fasteners. These attaching portions extend the effective holding length of the connection band, enabling stable support of short fasteners without changing the overall connection band width specified by the driving tool.
2Reliability
If the connection band width is increased to hold short fasteners, then short fasteners can be stably supported, but the connection fastener cannot be used with existing driving tools
Solution Approach 1:
Instead of increasing the width (horizontal dimension) of the connection band, the invention utilizes the longitudinal dimension by adding attaching portions that extend along the length of the fastener. This dimensional shift allows stable holding of short fasteners while maintaining the original connection band width for tool compatibility.
3Reliability
If the connection band holds fasteners at two upper and lower places, then fasteners can be stably held, but short fasteners cannot be held when the shank length is shorter than the vertical distance between holding portions
Solution Approach 1:
The holding function is segmented into three distinct attaching portions: upper holding portions, lower holding portions, and leading end holding portions. This segmentation allows the connection band to effectively hold fasteners even when the shank length is shorter than the vertical distance between upper and lower holding portions, as the leading end holding portions provide additional support points.
4Productivity
If a connection band with regulated width is used, then the connection fastener can feed smoothly in the driving tool, but the connection band may be pulled into the machine when it cannot stably hold the fastener
Solution Approach 1:
Attaching portions serve as intermediary elements that securely connect to the leading end portions of fasteners. This secure connection prevents the connection band from being pulled into the machine during operation, while maintaining smooth feed motion through the driving tool by preserving the original connection band width and configuration.
Data Source
AI summary
A connection fastener includes a plurality of fasteners, a sheet-shaped connection portion and attaching portions. Each fastener includes a head portion provided at one end portion side and a tapered leading end portion provided at the other end portion side. The sheet-shaped connection portion is configured to connect the plurality of fasteners in a parallel direction. The attaching portions are separate from the connection portion attached to the fasteners such that each attaching portion covers at least one part of each leading end portion. The connection portion includes first holding portions and second holding portions. Each of the first holding portions is configured to support a head portion side of each fastener. Each of the second holding portions is configured to support at least one part of a circumferential surface of each attaching portion.