Waterproof Earphone Core Assembly With Intersecting Glue Grooves
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Solution Overview
Problem
Existing waterproof earphones suffer from poor waterproof performance, especially in scenarios like swimming, due to insufficient glue storage and short glue groove paths, leading to water ingress and potential erosion of circuit components.
Innovation Solution
A core assembly design with intersecting glue grooves and multiple paths filled with sealant, enhancing the waterproof performance by increasing the glue storage path and resistance to water ingress.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional single-path glue groove design is used, then manufacturing is simple, but waterproof performance is insufficient
Solution Approach 1:
The glue groove is divided into multiple segments (first glue groove, second glue groove, third glue groove) with different orientations and positions. Each segment provides a separate sealing path, so that water must traverse multiple segmented barriers rather than a single continuous path, significantly improving waterproof reliability while maintaining manufacturability through standardized molding processes.
Solution Approach 2:
The invention transitions from a single linear glue groove to a multi-dimensional network of intersecting glue grooves at the housing corners. By adding spatial complexity in multiple dimensions (different orientations and intersections), the effective sealing path length and resistance to water ingress are dramatically increased without proportionally increasing manufacturing difficulty.
2Reliability
If short glue groove path is used, then manufacturing is easy, but water ingress resistance is poor
Solution Approach 1:
The waterproof sealing is segmented into multiple discrete glue groove sections positioned at different locations and orientations. Water ingress must sequentially overcome each segmented barrier, effectively multiplying the resistance without requiring a single excessively long continuous groove that would be difficult to manufacture.
Solution Approach 2:
Instead of extending a single glue groove path linearly, the invention creates a multi-dimensional network of intersecting grooves at strategic corner locations. This spatial arrangement increases the effective path length and complexity of water ingress routes while keeping individual groove segments at manageable lengths for manufacturing.
3Reliability
If insufficient glue storage is provided, then housing structure is simple, but waterproof performance deteriorates
Solution Approach 1:
Glue storage is segmented into multiple discrete cavities associated with different glue grooves rather than requiring one large continuous storage volume. Each cavity is localized and compact, but collectively they provide sufficient total glue volume to ensure complete filling of all sealing paths, maintaining structural simplicity while achieving reliable waterproofing.
Solution Approach 2:
The glue storage solution transitions from a single large-volume reservoir to a multi-dimensional distribution of smaller storage cavities at various housing corners and interfaces. This distributed approach increases effective glue storage capacity and ensures proper glue distribution throughout the sealing network without creating a bulky single-volume structure.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The design significantly improves the waterproofing capabilities of earphones, effectively preventing water ingress and protecting internal components, even under liquid pressure.
Implementation Method 1
A gap is provided at a connection among the upper housing, the lower housing, and the core bracket to form a glue groove. The glue groove includes at least two intersecting paths and is filled with a sealant.
Data Source
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AI summary
The present disclosure relates to a core assembly (100) of a waterproof earphone and the waterproof earphone, and relates to the field of waterproof earphones. The core assembly (100) of the waterproof earphone includes a housing and a core module. The housing includes an upper housing (122) and a lower housing (124). The upper housing (122) and the lower housing (124) are connected to form an accommodating cavity. The core module includes a core bracket (142) and a core (144). The core (144) is mounted on the core bracket (142). The core bracket (142) is mounted in the accommodating cavity. A gap is provided at a connection of the upper housing (122), the lower housing (124), and the core bracket (142) to form a glue groove. The glue groove includes at least two intersecting paths. The glue groove is filled with a sealant to extend a glue path of the core assembly (100) and expand application scenarios of the waterproof earphone.