Slide Fastener Slider Cutout Structure for Easy Pin Insertion
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Solution Overview
Problem
Conventional slide fasteners with extended connecting posts and lower blades result in a larger slider size and poor operability, making it difficult to insert a separable pin and elements.
Innovation Solution
A slider design with a cut-out portion on the upper blade positioned rearward of the guide post, inclined surfaces, and thinner thickness on one side of the lower blade, allowing for a compact structure and easy insertion of separable pins and elements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a slider is used on a curved track, then the slider can follow the curved path, but the slider tends to derail from the track due to centrifugal force
Solution Approach 1:
The slider is segmented into a body portion and a flange portion that are rotatable relative to each other. The flange portion can rotate independently to adapt to curved tracks, while the body portion maintains engagement with the track. This segmentation allows the slider to follow curved paths without derailing.
Solution Approach 2:
The flange portion is designed to be rotatable relative to the body portion, creating a dynamic structure that can adapt to curved tracks. This dynamic capability allows the slider to maintain contact with the track on curves while preventing derailment through controlled rotation of the flange portion.
2Ease of manufacture
If the slider has a simple structure, then it is easy to manufacture, but it cannot effectively prevent derailing on curved tracks
Solution Approach 1:
The slider is divided into a body portion and a flange portion that can be manufactured separately and then assembled. This segmentation allows each part to be manufactured using standard processes while the combination provides derailing prevention capability on curved tracks.
Solution Approach 2:
The flange portion acts as an intermediary element between the slider body and the curved track. It provides the necessary adaptation to curved paths while maintaining simple manufacturing processes for both the body and flange components.
3Ease of operation
If the flange portion is always in full contact with the track, then guidance is improved, but the slider cannot adapt to curved tracks
Solution Approach 1:
The flange portion is designed to rotate relative to the body portion, allowing it to dynamically adjust its orientation. On straight tracks, the flange maintains full contact for guidance, while on curved tracks, it can rotate to adapt to the curve, providing both guidance and adaptability.
Solution Approach 2:
The orientation parameter of the flange portion can change relative to the body portion through rotation. This parameter change allows the flange to maintain full contact with straight tracks for guidance while adapting to curved tracks when needed.
Data Source
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AI summary
Provided are: a slider which is compact, has a simple structure, can be easily operated, and allows an insertion pin and elements to be easily inserted in the slider; and a slide fastener. This slider (40) is provided with: a body (50) having an upper wing plate (51) and a lower wing plate (52), which are separated vertically and arranged parallel to each other, the body (50) also having a guide column (53) for connecting the upper wing plate (51) and the lower wing plate (52), the body (50) further having flanges (54a, 54b) provided along the left and right side edges, respectively, of the upper wing plate (51) and the lower wing plate (52), the body (50) further having pull tab mounting sections (58F, 58R, 70, 80) provided on the upper surface of the upper wing plate (51); and a pull tab (60) mounted to the pull tab mounting sections so that the pull tab (60) can pivot. The slider (40) is characterized in that a cutout (51b) is formed on one side of the upper wing plate (51) in the left-right direction relative to the guide column (53), the cutout (51b) being located behind the front end (51a) of the upper wing plate (51), the front end (51a) being located on the other side of the upper wing plate (51) in the left-right direction, and also behind the front end (52a) of the lower wing plate (52).