Front Frame Support Area for Sealing Member Stability
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Solution Overview
Problem
Existing electronic devices face challenges in effectively supporting and protecting sealing members within the sound module, which can lead to damage during the assembly process of the printed circuit board (PCB) on the housing.
Innovation Solution
The electronic device incorporates a housing with a front frame that includes a support area to securely hold the sealing member along its circumferential direction. This support area is designed with inclined first and second support surfaces to distribute the load evenly and prevent slipping, ensuring the sealing member is properly seated between the front frame and the PCB.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a sealing member is installed in the sound module without a dedicated support structure, then the device complexity is reduced, but the sealing member is vulnerable to damage during PCB assembly processes
Solution Approach 1:
The support area for the sealing member is integrated within the housing structure, nesting the protective function inside the existing housing rather than adding a separate external component. This resolves the contradiction by providing protection without significantly increasing overall device complexity
Solution Approach 2:
The support area is pre-formed in the housing during housing manufacturing, before the sealing member is installed. This preliminary preparation ensures the sealing member is protected from the start of the assembly process without requiring additional protective measures during assembly
2Reliability
If the sealing member is held firmly to prevent movement, then reliability improves, but the sound transfer capability between the acoustic duct and opening may be compromised
Solution Approach 1:
The support area provides localized holding of the sealing member at specific positions, while leaving other areas of the sealing member free to perform sound transfer functions. This resolves the contradiction by applying constraint only where necessary for stability, not where it would obstruct sound transfer
3Object-generated harmful factors
If the sealing member is positioned precisely for optimal sound transfer, then sound transfer efficiency improves, but the manufacturing precision requirements increase
Solution Approach 1:
The support area is pre-formed in the housing with built-in positioning features that guide the sealing member into the correct position during assembly. This reduces manufacturing precision requirements by providing mechanical guidance rather than relying solely on high-precision assembly operations
Solution Approach 2:
The support area acts as an intermediary structure between the housing and the sealing member, facilitating proper positioning and alignment. This mediator enables accurate positioning without requiring extremely precise direct mating between the sealing member and other components
Data Source
AI summary
An electronic device may include a housing forming a side surface surrounding an internal space, and including a front frame which is disposed in the internal space and forms at least a portion of the side surface, and on which a sound hole for transferring a sound from an outside of the electronic device to the internal space, and an acoustic duct communicating with the sound hole are formed, a printed circuit board (PCB) which is supported by the front frame and includes a first board surface, a second board surface, and an opening, a sound module disposed on, directly or indirectly, the first board surface to overlap the opening, and a sealing member that seals a portion between the front frame and the PCB. The front frame includes a support area supporting the sealing member along a circumferential direction of the sealing member.