Locking Module for Wireless Earphone Charging Case
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Solution Overview
Problem
Conventional charging cases for wireless earphones lack a technology to enhance the fixing force of the lid without increasing the product's volume and weight, leading to potential damage or loss of the earphones when the lid is opened by impact, and existing solutions compromise aesthetics or add unnecessary bulk.
Innovation Solution
A locking module with first and second locking units that are movably connected, featuring tapered fixing members and protrusions, and a locking module attachment device that includes a jig to guide and secure these units to specific positions, enhancing the fastening force between the lid components while maintaining a compact design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a separate case covering a charging case is employed to improve fixing force, then the lid fixing strength is improved, but the product volume and weight increase
Solution Approach 1:
The locking mechanism is divided into separate components: a locking protrusion on the lid and a corresponding locking groove on the case body. This segmentation allows the locking function to be integrated into the existing structure without adding a separate covering case, thereby maintaining compact volume while providing enhanced fixing strength.
Solution Approach 2:
The locking protrusion and groove are nested within the existing lid and case body structures. The locking mechanism is embedded into the original design rather than adding external layers, allowing the locking function to be incorporated without increasing the overall product volume and weight.
2Strength
If a separate case covering a charging case is employed to improve fixing force, then the lid fixing strength is improved, but the product weight increases
Solution Approach 1:
The locking mechanism is segmented into minimal structural additions (protrusion and groove) rather than a complete separate case. This reduces the amount of material required while maintaining the locking function, thereby minimizing weight increase.
Solution Approach 2:
The essential locking function is extracted from the concept of a separate covering case and implemented as integrated structural features. Only the necessary minimal elements (protrusion and groove) are added, removing unnecessary material and reducing overall weight.
3Strength
If conventional locking mechanisms are added to improve fixing force, then the lid fixing strength is improved, but the product aesthetics deteriorate
Solution Approach 1:
The locking protrusion and groove are designed as localized structural features that blend with the overall product design. By concentrating the locking function in specific localized areas rather than adding overall bulky structures, the aesthetic quality of the product surface is maintained while providing enhanced fixing strength.
Data Source
AI summary
A locking module is coupled to first and second bodies that are movably connected to each other to be selectively spaced apart from each other and disposed close to each other, and the locking module includes: a first locking unit configured to be attached to the first body; and a second locking unit configured to be attached to the second body and to be detachably coupled to the first locking unit on the same line.