Fastening Device with Detachable Positioning Needles
Solution Overview
Problem
Existing fastening devices for wearable articles, such as shoes, face instability and inconvenience when installed, particularly due to gaps formed between the positioning sheet and the article when loosening the lace, leading to shaking issues.
Innovation Solution
A fastening device comprising a case with a spool, an engaging unit, and a knob, featuring a base with detachable positioning needles that secure the device to the article, enhancing stability and flexibility during installation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a positioning sheet with positioning holes is used to couple the fastening device to the shoe article, then the fastening device can be installed on the article, but gaps are formed between the positioning sheet and the shoe article when loosening the lace, causing shaking and instability
Solution Approach 1:
The base is divided into an upper base portion and a lower base portion that can be separated and reconnected. The positioning needles are detachably connected to the lower base portion, allowing them to be inserted into the shoe article and then secured. This segmentation enables the positioning needles to be firmly fixed in the article while the base remains detachably connected, eliminating the gap and shaking problems while maintaining installability.
2Stability of the object's composition
If the fastening device is fixed on the shoe tongue during post-processing, then the device is securely attached, but the shoe must be specifically configured for the fastening device, making it difficult for users to couple the device to shoes without such configuration
Solution Approach 1:
The base is designed with detachable connection to the positioning needles, which can be universally inserted into various shoe articles with eyelets or holes. The upper base portion can be detached and reattached, allowing the fastening device to be coupled to different types of shoes without requiring specific shoe configurations. This universal design maintains secure attachment while improving compatibility across different shoe types.
3Ease of operation
If the positioning sheet is used to allow lace passage through positioning holes, then the device can be coupled to the shoe article, but the positioning sheet creates gaps and shaking when the lace is loosened
Solution Approach 1:
The base is designed with dynamic detachable connection between the upper base portion and lower base portion. The positioning needles can be inserted into the shoe article and then the upper base portion is attached to secure them. This dynamic connection allows easy coupling while maintaining stability during use, as the needles remain firmly fixed in the article throughout operation.
Data Source
AI summary
A fastening device includes a case, a spool disposed within the case, an engaging unit disposed above the spool, and a knob covering the upper case body. The case includes an upper case body including at least one protecting wing extending upward, and a base detachably coupled to the upper case body. At least a portion of the at least one protecting wing is higher than a lower edge of the knob.