Reversible Fastening System for Leathercraft Decorative Linings
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Solution Overview
Problem
Existing decorative linings on leathercraft articles are permanently fastened, making it difficult and time-consuming to change or replace them without damaging the item, and there is a lack of systems for reversible fastening that do not require tools.
Innovation Solution
A reversible fastening system comprising a male part with decorative piercings and fastening buttons, and a female part with button holes that allow for precise alignment and easy detachment of the decorative lining, using press fasteners and translational locking lugs for secure yet tool-free attachment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a decorative lining is permanently fastened on a leathercraft article using traditional methods (screws, rivets, bonding), then the fastening is strong and durable, but it becomes difficult and time-consuming to change or replace the lining without damaging the item
Solution Approach 1:
The fastening system is divided into separate male and female parts with distinct functions. The male part contains fastening buttons for attachment to the leathercraft article and locking lugs for securing the lining. The female part contains button holes for receiving the buttons. This segmentation allows the lining to be easily detached by simply separating the male and female parts without damaging the leathercraft article.
Solution Approach 2:
The fastening system transitions from a static permanent attachment to a dynamic reversible connection. The locking lugs engage with the lining through elastic deformation, allowing the lining to be securely held during use but easily released when needed. This dynamic mechanism enables rapid changes while maintaining strong attachment during wear.
2Ease of operation
If traditional permanent fastening methods are used, then the lining is securely attached, but specialized tooling is required for removal and the process may damage the elements
Solution Approach 1:
The fastening system is designed to be self-servicing, requiring no external tools for attachment or detachment. The male and female parts naturally engage and disengage through simple manual manipulation. The elastic locking lugs automatically secure the lining when the parts are joined and release when separated, eliminating the need for specialized tooling and preventing damage to the leathercraft article.
3Adaptability or versatility
If decorative linings are permanently fastened, then the aesthetic appearance is maintained, but it is not possible to rapidly produce variants or personalize fashion accessories
Solution Approach 1:
The fastening system enables dynamic reconfiguration of decorative elements. Users can quickly swap between different linings and decorative metal sheets by simply detaching and reattaching the male and female parts. This dynamic capability allows for rapid production of variants and personalization of fashion accessories without time-consuming dismantling and reassembly processes.
4Ease of operation
If a reversible fastening system is implemented, then easy customization is enabled, but the alignment precision must be maintained without specialized tooling
Solution Approach 1:
The male and female parts are pre-configured with corresponding geometric features (buttons, button holes, locking lugs) that automatically guide alignment during attachment. The locking lugs are positioned to engage with specific locations on the lining, ensuring precise positioning without requiring user skill or specialized tooling. This preliminary configuration of alignment features enables easy customization while maintaining manufacturing precision.
Data Source
AI summary
The invention proposes a system for reversibly fastening a decorative lining on the flexible surface of a leathercraft article enabling a regular, precise and immediate alignment. The system comprises a male part constituting a rigid brooch having decorative piercings and having a fastening face bearing N fastening buttons, N being an integer greater than or equal to 1, each button comprising a shank and a free bulging end wider than the shank, and at least one lug for translationally locking the decorative lining; a female part comprising as many button holes as the male part comprises buttons, each button hole being designed, in use, to be fastened in a permanent manner on the surface made of flexible material and to maintain in a reversible manner the bulging end of a button; the or each locking lug being intended to engage, in use, in an orifice cut into the decorative lining.