Slider Spring Support via Cover Limiting Portion
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Solution Overview
Problem
Existing slider designs for slide fasteners require complex structures and costly production methods to support spring members as cantilevers, which increases manufacturing costs and complexity.
Innovation Solution
A slider design featuring a slider body with an upper wing, lower wing, and interconnection pillar, along with a pull tab and spring member that includes a front leg, rear leg, and intermediate portion, where the spring member is sandwiched by the pull tab and covered by a slider body with a limiting portion on the cover to prevent upward displacement, allowing the spring member to operate as a cantilever without mechanical fastening.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a spring member is supported as a cantilever by a slider body alone using complex structures (through-holes, locking portions, swaging), then the spring member can function properly, but the manufacturing cost and structural complexity increase
Solution Approach 1:
The slider is divided into two main parts: the slider body and the cover. The cover is a separate component that attaches to the slider body to complete the support structure for the spring member. This segmentation allows each part to have a simpler, more focused function while together they achieve the required support reliability.
Solution Approach 2:
The cover acts as an intermediary component between the slider body and the spring member. It provides the limiting portion that works with the insertion hole in the slider body to support the spring member's front leg, eliminating the need for complex locking mechanisms directly in the slider body.
2Strength
If mechanical fastening methods are used to secure the spring member to the slider body, then the spring member is firmly supported, but the production cost and manufacturing complexity increase
Solution Approach 1:
The cover and slider body together create a self-supporting structure for the spring member. The insertion hole in the slider body and the limiting portion in the cover work in conjunction to hold the spring member's front leg without requiring additional mechanical fastening elements like screws, clips, or welding.
Solution Approach 2:
The support function is achieved by merging the insertion hole structure in the slider body with the limiting portion structure in the cover. This combined approach provides firm support for the spring member while avoiding the need for separate mechanical fastening components, thereby simplifying manufacturing.
3Force
If the spring member is allowed to displace upward freely, then the spring can exert full elastic force, but the spring member cannot operate as a proper cantilever
Solution Approach 1:
The limiting portion in the cover is positioned specifically to restrict upward displacement of the spring member's front leg at a critical location. This localized constraint allows the spring to maintain its cantilever configuration and exert proper elastic force without requiring comprehensive restrictions throughout the entire structure.
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 simplifies the method of supporting a spring member as a cantilever, reducing production costs and enhancing mechanical strength while maintaining a sophisticated appearance, by using a cover with a limiting portion to restrict upward displacement of the spring member's front leg, allowing it to function effectively without the need for mechanical fastening to the slider body.
Implementation Method 1
a spring member mounted onto the slider body so as to sandwich a portion of the pull tab, the spring member including a front leg, a rear leg, and an intermediate portion extending between the front leg and the rear leg
Data Source
AI summary
Slider includes a slider body with an insertion hole extending toward a lower wing from an insertion entrance on a side of an upper wing so as to form a hollow in the interconnection pillar; a pull tab mounted onto the slider body so as to be pivotable over the upper wing between a collapsed posture and an upright posture; a spring member mounted onto the slider body so as to sandwich a portion of the pull tab; and a cover attached to the slider body so as to cover at least the spring member. The spring member includes a front leg inserted into the insertion hole via the insertion entrance. The cover is configured to include a limiting portion that limits, at a position over the insertion hole, upward displacement of the front leg of the spring member.