Pivoting Needle Fastening Device for Wearables
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Solution Overview
Problem
Conventional fastening devices for wearable articles, such as shoes, are inconvenient to install and use due to instability and lack of flexibility, requiring users to loosen and re-tie laces, and often fail to securely attach to the article without gaps forming between the device and the shoe.
Innovation Solution
A fastening device with a base, installing assembly, and reel part, featuring pivotally disposed needles that secure the device to the article by inserting through its surfaces, allowing for easy installation and secure attachment, and a method involving aligning and inserting needles to restrict the device's base, enhancing stability and flexibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional fastening device is fixed on the shoe tongue during post-processing, then the device can be securely attached, but the installation process becomes complex and inflexible requiring professional shoe manufacturing processes
Solution Approach 1:
The fastening device is divided into separate components: a base that attaches to the shoe tongue and a reel part that can be independently installed. The base includes positioning structures that simplify attachment without requiring complex post-processing of the entire device
Solution Approach 2:
The base is pre-configured with positioning holes and attachment structures during manufacturing, allowing users to directly attach the reel part to the base without requiring professional shoe manufacturing processes. This preliminary preparation eliminates the need for complex installation procedures
2Ease of operation
If a positioning sheet with positioning holes is used to couple the fastening device to the shoe article, then the device can be easily installed, but gaps form between the positioning sheet and shoe article causing shaking and instability
Solution Approach 1:
The base includes positioning protrusions that locally contact specific points on the shoe tongue, distributing attachment forces at multiple localized positions. This prevents gap formation and shaking while maintaining easy installation, as the positioning structures are strategically placed to ensure stable contact with the shoe article surface
Solution Approach 2:
The positioning structures extend in multiple dimensions from the base, creating a three-dimensional attachment system rather than a flat two-dimensional positioning sheet. This multi-dimensional approach ensures stable contact with the shoe tongue surface while allowing easy installation
3Stability of the object's composition
If the fastening device uses a rigid attachment structure, then stability is improved, but the device loses flexibility in adapting to different shoe articles and installation positions
Solution Approach 1:
The base includes flexible positioning structures that can adapt to different positions and orientations on various shoe articles. These structures maintain stable attachment through elastic deformation or adjustable positioning, providing both stability and adaptability without requiring a completely rigid structure
Data Source
AI summary
A fastening device is configured to be installed on an article and includes a base, an installing assembly and a reel part. The base is located on the article. The installing assembly includes at least one needle which is pivotally disposed at the base so as to rotate relatively to the base. The reel part is coupled to a lace and disposed on the base. The at least one needle is inserted from a first surface of the article into a second surface of the article, then inserted from the second surface of the article into the first surface of the article, and the at least one needle is restricted to the article for securing the base on the first surface of the article.