Universal Earphone Film Fixture for Precise Multi-Model Alignment
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Solution Overview
Problem
Existing earphone film attaching devices are limited in their applicability to specific in-ear earphones of a certain size and shape, failing to accommodate earphones of varying lengths and shapes.
Innovation Solution
A universal film application device featuring a fixing plate with fitting pieces and a limiting structure, including a buckling piece and a limiting groove, allows for detachable connection and adaptation to different earphone sizes, with a combination of a release film, decorative film, and base film, ensuring secure fixation and easy application across various earphone models.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a specific fixing device is designed to match a specific in-ear earphone shape and size, then the fixation accuracy for that specific earphone is improved, but the adaptability to different earphone models is reduced
Solution Approach 1:
The fixing device is designed with a universal structure that can accommodate multiple earphone models. The fixing plate with multiple fitting pieces and adjustable limiting structure allows a single device to fix different sizes and shapes of in-ear earphones, eliminating the need for multiple model-specific devices while maintaining accurate positioning for each model
Solution Approach 2:
The fixing device is divided into modular components: a fixing plate with multiple fitting pieces, a detachable limiting structure with buckling piece, and adjustable limiting grooves. This segmentation allows the device to be reconfigured for different earphone models, providing both universality and precise fixation accuracy through selective assembly
2Ease of operation
If the in-ear earphone is held manually for film pasting, then the operation flexibility is improved, but the positioning accuracy and stability are reduced due to the small size and irregular shape
Solution Approach 1:
The earphone is preliminarily positioned in the fixing groove of the fixing device before film pasting begins. The limiting structure with buckling piece and limiting grooves pre-establishes accurate positioning, allowing the operator to then perform film pasting with flexibility while maintaining consistent accuracy throughout the process
3Adaptability or versatility
If a detachable buckling piece is used to connect with multiple fitting pieces, then the adaptability to different earphone positions is improved, but the device complexity is increased
Solution Approach 1:
The buckling piece is designed to be detachable and movable, allowing it to connect with different fitting pieces on the fixing plate. This dynamic reconfigurability enables the limiting structure to adapt to various earphone positions and models. The complexity is managed through simple snap-fit connections that are easy to assemble and disassemble
Data Source
AI summary
A universal film application device for an earphone includes a fixing plate and a limiting structure. Fitting pieces are disposed on the fixing plate. The limiting structure includes a buckling piece and a limiting groove. The buckling piece is capable of detachably connecting with any one of the fitting pieces. The limiting groove is disposed in one side of the limiting structure away from the fixing plate, and the limiting groove is configured to limit a first end of the earphone. One end of the fixing plate extends to define an abutting groove. The abutting groove is configured to abut against a second end of the earphone. The fixing plate further includes an extension rod disposed between the fitting pieces and the abutting groove. The extension rod is configured to fix a combined film composed of a release film, a decorative film, and a base film.