Headphone Light Guide Assembly With Multi-Directional Retention
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Solution Overview
Problem
Conventional headphones with light guiding units lack stability in assembly, as they can only be fastened in one direction, leading to instability and potential detachment.
Innovation Solution
The headphone design incorporates an outer housing with a button hole, guiding board, supporting base, and fixing arms that securely fasten the light guiding unit by hooking onto retaining walls, along with reinforcing portions and ramps to ensure stable assembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the light guiding unit uses a simple locking clasp structure, then the device complexity is reduced, but the assembly stability deteriorates because it can only be fastened in one direction
Solution Approach 1:
The locking clasp is extended from a single-direction fastening structure to a multi-directional fastening system. The clasp body includes first and second clasps that can hook onto retaining walls in different directions (first extension direction and second extension direction perpendicular to the first), transforming a one-dimensional fastening approach into a two-dimensional fastening system that provides comprehensive assembly stability.
Solution Approach 2:
The locking clasp is divided into multiple independent clasp elements (first clasp and second clasp) that can independently engage with retaining walls. This segmentation allows each clasp element to provide fastening in specific directions, and collectively they provide multi-directional fastening capability, resolving the contradiction between simple structure and assembly stability.
2Ease of manufacture
If the light guiding unit is fastened only in one direction, then the ease of manufacture is improved, but the reliability deteriorates due to potential detachment
Solution Approach 1:
The fastening system transitions from single-direction to multi-directional fastening by incorporating clasps that extend in perpendicular directions. The first clasp extends in a first direction and the second clasp extends in a second direction perpendicular to the first, enabling the light guiding unit to be securely fastened to the earphone unit in multiple directions simultaneously, thereby improving reliability without significantly complicating the manufacturing process.
Data Source
AI summary
A headphones comprising: a shell having a sidewall, an inner sidewall surface and an open hole, an outer wall connected to the sidewall and having an inner wall surface, two first retaining walls arranged on the inner wall surface to align with the open hole; a light guiding unit arranged in the open hole and comprising: a guiding unit body passing through the open hole, a guide tab extended from the guiding unit body, a guiding unit base extended from the guide tab and placed between the two first retaining walls; and a circuit board arranged in the shell and provided with an open slot, wherein the opening of the open slot is extended inwardly from the circuit board; the guide tab is inserted into the open slot and the light guiding unit is positioned between the circuit board and the inner sidewall surface. Thus, headphones can be stably assembled.