Two-Way Separator Tilted Pin Structure to Avoid Lock Pin Interference
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Solution Overview
Problem
Existing two-way separators face issues with high contact areas between separable and retainer pin protrusions leading to potential interference with the lock pin of the slider, causing damage.
Innovation Solution
A two-way separator design featuring a separable pin protrusion with a tilt portion having a larger dimension in the up-down direction than the lock pin protrusion, and a retainer pin protrusion engaging with a groove, with a tilt surface that avoids interference by maintaining a high contact area.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the contact area between separable pin protrusion and retainer pin protrusion is increased to avoid over line situations, then the reliability of the connection is improved, but the lock pin of the slider may interfere with the protrusions causing damage
Solution Approach 1:
The patent introduces a tilt portion that tilts from the upper side toward the lower side in the up-down direction, creating a dimensional offset between the separable pin protrusion and the lock pin path. This dimensional change allows the protrusion to maintain high contact area while clearing the lock pin interference zone.
Solution Approach 2:
The tilt portion is applied locally to the separable pin protrusion rather than the entire pin structure. This localized modification provides the necessary clearance from the lock pin while maintaining the overall connection functionality and contact area between the separable and retainer pins.
2Reliability
If the separable pin protrusion and retainer pin protrusion have high contact area, then the stopping point function is improved, but the structure becomes more complex to avoid lock pin interference
Solution Approach 1:
The tilt portion is applied locally to the separable pin protrusion rather than the entire pin structure. This localized modification provides the necessary clearance from the lock pin while maintaining the overall connection functionality and contact area between the separable and retainer pins.
Solution Approach 2:
The separable pin protrusion is segmented into different functional portions: the tilt portion that provides clearance from the lock pin, and the contact portion that maintains high contact area with the retainer pin protrusion. This segmentation allows each portion to fulfill its specific function independently.
Data Source
AI summary
The two-way separator includes a pair of fastener stringers and a pair of sliders. The fastener stringers include fastener tapes, element columns, and a separable pin and a retainer pin. The sliders are disposed on the fastener stringers. Each of the sliders has a slider body and a lock pin. The separable pin has a separable pin body, a separable pin protrusion, and a groove. The retainer pin has a retainer pin body and a retainer pin protrusion. The separable pin protrusion has a half tooth portion and a tilt portion. The tilt portion has a tilt surface that tilts from an upper surface of the separable pin body toward a projecting side edge of the half tooth portion and tilts from an upper side toward a lower side, and a dimension of the tilt portion in an up-down direction is greater than a protrusion amount of the lock pin.