Slider Raised Portion and Intersecting Pin for Zipper Removal
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Solution Overview
Problem
Conventional slide fasteners face issues where the projection of the separable pin and fastener element fail to disengage when the slider comes into contact with the retainer box, preventing the separable pin from being removed from the retainer box.
Innovation Solution
The design includes a slider with a raised portion and a separable pin featuring an intersecting contact portion that allows the slider to disengage the projection from the fastener element when pulled down, enabling the separable pin to be reliably removed by aligning the slider's contact with the pin's inclined surface, which guides the pin away from the retainer pin.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the slider is pulled down to contact the retainer box, then the separable pin should be removed from the retainer box, but the projection of the separable pin and the fastener element are not disengaged
Solution Approach 1:
The contact portion of the separable pin is designed with an inclined surface that changes orientation during operation. When the slider is pulled down, the inclined surface transitions from a horizontal engaged state to an oblique state, dynamically converting the vertical pulling force into lateral movement that disengages the projection from the fastener element, ensuring reliable removal
Solution Approach 2:
The raised portion of the slider acts as an intermediary between the user's pulling action and the separable pin. It contacts the inclined surface of the separable pin's contact portion, transmitting and transforming the pulling force to achieve disengagement of the projection from the fastener element before the separable pin is fully removed from the retainer box
Data Source
AI summary
There is provided a slide fastener with a separable stop including a retainer pin and a separable pin. The separable pin has a projection configured to be engaged with a fastener element. The slider includes a raised portion. For example, the raised portion extends on a lower surface of the upper plate rearward from a periphery of the guide post and is raised from the lower surface of the upper plate toward the lower plate. The raised portion of the slider and the separable pin have respective contact portions configured to come in contact with each other in a moving direction of the slider. At least one of the contact portion of the raised portion of the slider and the contact portion of the separable pin is provided with an intersecting portion obliquely intersecting with the moving direction of the slider.