Detachable Earphone Modular Joint Design
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Solution Overview
Problem
Existing earphones are prone to damage at the joint parts of the earplug and earphone cable or audio plug and cable, requiring replacement of the entire device when any component is damaged, leading to material wastage.
Innovation Solution
A detachable earphone design featuring a metal joint with coaxial receiving grooves and a flexible earphone cable with stepped insertion portions, allowing for secure and modular connection of the audio plug, earplug, and cable, enabling individual component replacement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the earphone cable is soldered to the earplug and audio plug, then the connection is strong and reliable, but the entire earphone must be replaced when any component is damaged, leading to material wastage
Solution Approach 1:
The earphone is divided into separable modules: earplug, earphone cable, and audio plug. Each component can be independently replaced through detachable connections, eliminating the need to discard functional components when one part fails. This segmentation resolves the contradiction by maintaining reliable connections through proper joint design while enabling selective replacement to reduce material wastage.
2Ease of repair
If the earphone components are made detachable, then damaged parts can be replaced individually, but the joint parts may be easily damaged by pulling or bending
Solution Approach 1:
The connection structure employs nested receiving grooves where the earphone cable insertion portion fits into grooves formed on the earplug and audio plug. This nested design provides multiple levels of mechanical engagement and positioning features that strengthen the joint against pulling and bending forces while maintaining detachability for easy repair.
3Adaptability or versatility
If the earphone components are made detachable, then modular replacement is enabled, but the connection structure becomes more complex with multiple receiving grooves and insertion portions
Solution Approach 1:
The earphone cable is designed with universal insertion portions that can connect to different types of audio plugs and earplugs through standardized receiving groove configurations. This multi-functional design enables modular replacement capability across different components while using consistent structural elements, thereby reducing overall system complexity despite the detachable nature.
Data Source
AI summary
A detachable earphone is disclosed. The detachable earphone comprises an audio plug; an earplug; and an earphone cable connecting the audio plug to the earplug, wherein at least one of the audio plug and the earplug forms a joining portion, at least one end of the earphone cable forms an insertion portion, and the insertion portion is detachably engaged in the joining portion.