Ear-Clip Earphone Hook Geometry for Stable, Comfortable Fit
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Solution Overview
Problem
Ear-clip earphones often squeeze the user's helix due to varying ear sizes, compromising comfort and suitability for different users.
Innovation Solution
The ear hook of the ear-clip earphone is designed with a specific symmetry plane and contour curves to bypass the antihelix and helix, maintaining a distance of 16-20 mm between feature points to accommodate various ear sizes, ensuring comfortable and stable fitting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the ear-clip earphone uses a conventional ear hook design, then it can be clamped to the user's helix, but it squeezes the user's helix due to varying ear sizes, compromising comfort
Solution Approach 1:
The ear hook is designed with a specific local geometry where the inner contour curve maintains a controlled distance (16-20mm) from the first feature point. This local dimensional control ensures that the ear hook bypasses the helix and antihelix without squeezing, while still providing stable clamping on the concha cavity and helix regions.
Solution Approach 2:
The ear hook design transitions from a simple curved shape to a three-dimensional structure with a specifically controlled inner contour curve. By adding the dimensional constraint of the 16-20mm distance measurement in the projection plane, the design achieves spatial optimization that prevents helix squeezing while maintaining clamping effectiveness.
2Ease of operation
If the ear hook is designed to bypass the antihelix and helix, then wearing comfort is improved, but the clamping stability may be compromised
Solution Approach 1:
The ear hook is segmented into distinct functional regions: a first portion that contacts the concha cavity, a second portion that forms the inner contour curve bypassing the helix, and a third portion that contacts the helix. This segmentation allows each region to perform its specific function optimally - providing both comfort through helix bypassing and stability through targeted contact points.
Solution Approach 2:
The design controls the geometric parameters of the ear hook, specifically the distance between the first feature point and the second feature point on the inner contour curve. By maintaining this parameter within 16-20mm, the design achieves the optimal balance between bypassing the helix for comfort and maintaining sufficient contact for stable clamping.
Data Source
AI summary
The present disclosure relates to an ear-clip earphone (10) comprising: a sound production portion (11), an abutting portion (12), and an ear hook (13). The ear hook (13) is configured to bypass an antihelix (105) and a helix (107) of the user, and connect the sound production portion (11) and the abutting portion (12). The ear hook (13) has a first symmetry plane (S1). The housing forms a first projection (11′) on the first symmetry plane (S1), the abutting portion (12) forms a second projection (12′) on the first symmetry plane (S1), and the ear hook (13) forms a third projection (13′) on the first symmetry plane (S1). The first projection (11′) and the second projection (12′) have a shortest connecting line (O1O2) or a common tangent point between them. The midpoint of the shortest connecting line (O1O2) or the common tangent point is taken as the first feature point (O), and a point on the inner contour curve of the third projection (13′) that is farthest from the first feature point (O) is taken as a second feature point (C). By designing a distance between the first feature point (O) and the second feature point (C), the ear hook (13) is able to bypass the ears of a large proportion of the user population, and is applicable to users with different ear sizes, and at the same time, the ear hook (13) is of a suitable size to avoid the problem of unstable clamping.