Slide Fastener Slider With Pivoting Pull Tab
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Solution Overview
Problem
Conventional slide fastener sliders face difficulties in surface treatment due to the assembly process, where the locking pawl and pull tab are fixed, making it challenging for surface treatment materials to permeate, leading to poor surface treatment and increased costs and space requirements for separate equipment and processes.
Innovation Solution
A slide fastener slider design where the pull tab and locking pawl are pivotally held on the slider body, allowing for integrated assembly and surface treatment, with a cam portion and inclined surfaces enabling the locking pawl to be elastically deformed and inserted/removed from the element guide passage, facilitating surface treatment without exerting load on the pawl, thus allowing for improved permeability of surface treatment materials.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the locking pawl and pull tab are fixed on the slider body, then the assembly structure is stable, but the surface treatment material cannot permeate into the contact regions, resulting in poor surface treatment
Solution Approach 1:
The pull tab is designed to be pivotally held on the slider body rather than fixed, allowing it to rotate between a laid-down position (where it does not contact the body) and a stood-up position (where it contacts the body). This dynamic configuration enables surface treatment material to permeate into contact regions during the laid-down state while maintaining structural stability during operation.
2Ease of manufacture
If separate assembly processes are used for the pull tab and locking pawl, then each component can be assembled independently, but the manufacturing cost and space requirements increase
Solution Approach 1:
The pull tab and locking pawl are both pivotally held on the slider body in a single assembly process, merging what would otherwise require separate assembly operations. This integrated approach reduces manufacturing complexity and space requirements while maintaining the independence of each component's pivotal connection.
3Ease of operation
If the pull tab is laid down toward the rear mouth, then the locking pawl can be inserted into the element guide passage, but the surface treatment material permeation is blocked
Solution Approach 1:
The pull tab is designed to be pivotally held on the slider body rather than fixed, allowing it to rotate between a laid-down position (where it does not contact the body) and a stood-up position (where it contacts the body). This dynamic configuration enables surface treatment material to permeate into contact regions during the laid-down state while maintaining structural stability during operation.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This design enables quick and cost-effective assembly of the slider components, reduces space requirements, and enhances decorativeness by allowing simultaneous surface treatment of the slider body, pull tab, and locking pawl, improving the overall surface treatment process.
Implementation Method 1
within the rotatable region of the pull tab, the locking pawl is elastically deformed to move the cover portion
Data Source
AI summary
There is provided a slide fastener slider. A pull tab has a rotatable region including laid-down positions and a stood-up position. Within the rotatable region of the pull tab, a locking pawl is elastically deformed to move a cover portion, and a pawl portion is arranged to be inserted into and removed from an element guide passage in accordance with movement of the cover portion. When the pull tab is completely laid down toward the shoulder mouths and rear mouth relative to the slider body, the pull tab has respective regions in which the pull tab is rotatable over a predetermined angle without exerting any load on the locking pawl.