Double-Sided Eyelet With Variable Shank Height
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Solution Overview
Problem
Conventional double-sided eyelets require multiple shank heights to accommodate varying support thicknesses, leading to unsightly edges and lack of grip, necessitating separate eyelets for each thickness and complicating cap insertion and orientation.
Innovation Solution
The eyelet features a shank with two portions of different diameters, allowing variable height adjustment to fit different support thicknesses, with a groove in the second head to accommodate the shank edge and anti-rotational facets on the cap-shaped head for secure closure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the shank height is increased to accommodate thicker support materials, then the eyelet can fit thicker supports, but the shank will project beyond the second head causing unsightly edges and lack of grip
Solution Approach 1:
The shank is divided into two distinct portions: a first portion with a larger diameter for structural strength and engagement, and a second portion with a smaller diameter that can be contained within the second head. This segmentation allows the shank to provide both the necessary height for thick supports and the proper containment for aesthetic and functional performance.
Solution Approach 2:
Different portions of the shank are given different diameters to serve different functions. The first portion has a larger diameter to provide structural integrity and engagement with the support material, while the second portion has a smaller diameter to fit within the second head, ensuring proper appearance and grip without projecting beyond the eyelet surface.
2Adaptability or versatility
If multiple eyelet variants with different shank heights are produced, then each can be optimized for specific support thicknesses, but the device complexity and inventory requirements increase
Solution Approach 1:
The eyelet design incorporates a shank with two different diameter portions, allowing a single universal eyelet model to accommodate a wide range of support thicknesses. The first portion engages with the support material while the second portion fits within the second head, providing both aesthetic and functional performance across multiple applications without requiring multiple specialized variants.
Solution Approach 2:
The shank's two-port ion structure provides dynamic adaptability to different support thicknesses within a single component design, eliminating the need for static multiple variants.
3Shape
If the shank height is reduced to prevent projection, then the appearance and grip are improved, but the eyelet cannot accommodate thicker support materials
Solution Approach 1:
The shank is segmented into two functional portions with different diameters. The first portion provides the necessary height and structural engagement for thick supports, while the second portion is contained within the second head to ensure proper appearance and grip, resolving the contradiction between height requirements and containment requirements.
Solution Approach 2:
Different portions of the shank are given different diameters to serve different functions simultaneously, allowing the eyelet to accommodate thick supports while maintaining proper appearance and grip characteristics.
4Ease of manufacture
If the shank has a uniform diameter, then the manufacturing is simpler, but the engagement and grip effectiveness are reduced
Solution Approach 1:
The shank features different diameters at different portions to optimize local functions: the first portion has a larger diameter for structural engagement and grip effectiveness, while the second portion has a smaller diameter for proper containment within the second head. This local differentiation improves reliability without significantly complicating manufacturing.
Solution Approach 2:
The shank is segmented into two portions with different diameters, where each segment is optimized for its specific function while maintaining manufacturing feasibility through standard machining processes.
Data Source
AI summary
A double-sided eyelet, of having a first head (2) provided with an element (3) having a shank (4) and a second head (8) provided with an element (9) having a shank (10), wherein the aforesaid heads (2,8) are mutually closed on the hole (6) of a support (7,17). According to the invention, the second head (8) of the eyelet is provided with a seat (14) suitable to receive the folded edge (16,18) of the shank (4), in which the size of the aforesaid folded edge is variable as a function of the thickness of the support (7,17). In comparison with known eyelets for leatherwear and for clothing in general, the eyelet according to the invention offers the advantage that, while preventing the formation of unsightly excess thicknesses on the coupling section of the shank of the first head inside the hole of the second head of the eyelet.