Hearing Device Chassis Integrated PCB Snap Attachment

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Solution Overview

Problem

Modern hearing devices require complex and costly methods to attach printed circuit boards, involving multiple parts and assembly processes that are time-consuming and costly.

Innovation Solution

A hearing device with a chassis featuring integrated attachment members that restrict the motion of the printed circuit board in multiple directions, allowing for easier and more secure attachment without the need for separate structures or complex assembly, using snap members and deformable areas for flexible printed circuit boards.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If traditional attachment methods (screws, pressing, soldering) are used to attach the printed circuit board, then the printed circuit board can be securely fixed, but the assembly process becomes complex and time-consuming

Engineering Contradiction:

Improvesecure attachment of printed circuit boardVSAvoidassembly process complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The attachment members are integrated directly into the chassis as single-piece structures, merging the chassis and attachment features into one component. This eliminates the need for separate attachment parts and complex assembly operations like screwing or pressing multiple components together, while still providing secure fixation of the printed circuit board

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The attachment function is extracted from separate fastening components and incorporated directly into the chassis structure itself. The attachment members are formed as integral parts of the chassis, removing the need for additional fastening hardware and simplifying the overall assembly process

Inventive Principle:

Principle #2Taking out (Extraction)

2Reliability

If multiple separate parts are used to attach the printed circuit board, then secure fixation is achieved, but production cost increases

Engineering Contradiction:

Improvesecure fixation of printed circuit boardVSAvoidproduction cost

Core Design Contradiction:

ReliabilityVSEase of manufacture

Solution Approach 1:

Multiple attachment members are combined into a single integrated chassis structure, reducing the total number of parts that need to be manufactured, inventoried, and assembled. This integration reduces production costs while maintaining secure fixation of the printed circuit board through the combined attachment features

Inventive Principle:

Principle #5Merging (Combining)

3Reliability

If multiple interface surfaces are used for attachment, then the printed circuit board can be securely attached, but the device becomes less compact and tolerance chains increase

Engineering Contradiction:

Improveattachment reliabilityVSAvoiddevice compactness

Core Design Contradiction:

ReliabilityVSVolume of moving object

Solution Approach 1:

The attachment members are integrated into the chassis body, eliminating the need for separate interface surfaces between chassis and attachment components. This reduces the overall volume required for attachment mechanisms and shortens tolerance chains by removing intermediate interfaces, while still providing secure attachment of the printed circuit board

Inventive Principle:

Principle #5Merging (Combining)

Data Source

PatentUS10165377B2Hearing device

Publication Date: 2018.12.25 OTICON

AI summary

A hearing device is disclosed. The hearing device comprises a chassis and a printed circuit board attached to the chassis. The chassis comprises a number of attachment members configured to restrict the motion of the printed circuit board in one or more directions. The attachment members are integrated parts of the chassis.