Beveled Faceplate Assembly for Custom Hearing Device Shells
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Solution Overview
Problem
Custom-fitted ear-wearable devices face challenges in integrating sensors and aligning components like cables due to unique ear geometries, making mass production costly and difficult.
Innovation Solution
A system for producing custom-fitted ear-wearable devices with interchangeable sensors and cable retention features, utilizing 3D scanning and printing to create organically shaped shells that integrate sensors directly on the ear surface, and a faceplate with a beveled edge for secure assembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If custom-fitted shells are created for each user's unique ear geometry, then device fit and comfort are improved, but manufacturing complexity and cost increase
Solution Approach 1:
The device is divided into modular components: a standardized shell body that can be mass-produced, and customizable faceplates that are injection molded to match specific ear geometries. This segmentation allows the majority of the device to be manufactured using efficient mass production techniques while only the visible outer surface requires customization, thereby reducing overall manufacturing complexity while maintaining custom fit benefits.
2Measurement precision
If sensors are integrated directly on the ear surface, then sensor placement precision is improved, but device complexity increases
Solution Approach 1:
The faceplate is pre-configured with precisely positioned sensor mounting locations during the injection molding process, based on the user's specific ear geometry data. This preliminary action ensures that sensors are placed with high precision on the ear surface without requiring complex assembly steps or manual positioning during final device assembly, thus achieving precise sensor placement while minimizing device complexity.
3Ease of operation
If faceplate void with curved and beveled perimeter edge is created, then ease of assembly is improved, but manufacturing precision requirements increase
Solution Approach 1:
The faceplate void features curved and beveled perimeter edges that correspond to the organically shaped outer surface of the shell. These curved geometries provide self-aligning features during assembly, guiding the faceplate into proper position without requiring complex alignment procedures. The curvature tolerates minor dimensional variations better than sharp angles would, thereby facilitating easier assembly while managing manufacturing precision requirements.
Data Source
AI summary
An ear-wearable electronic device is housed within a shell. The shell includes an organically-shaped outer surface that corresponds uniquely to an ear geometry of a user of the ear-wearable device. The shell also has a faceplate void that has a curved and beveled perimeter edge. The faceplate void facilitates access to one or more devices installable into the shell. A faceplate is installed in the faceplate void. The faceplate has a beveled edge that mates with the perimeter edge. The faceplate includes an unbroken covering surface that matches the outer surface of the shell surrounding the faceplate void.