Movable Baffle for Mobile Terminal Receiver Dust Protection
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Solution Overview
Problem
The maintenance of mobile terminals is challenging due to dust and fine impurities entering the receiver through larger inner-layer sound output holes, causing noise issues and increased maintenance costs, as existing designs fail to effectively prevent contamination.
Innovation Solution
A mobile terminal design featuring a movable baffle that covers the second sound output hole when not in use, ensuring dust is prevented from entering the receiver, utilizing either an elastic or magnetic driving element to position the baffle over the hole, thereby maintaining sound quality and reducing maintenance needs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a double-layer sound output hole design is used to achieve full-screen design with hidden receiver, then the receiver can sound normally in default position, but the inner-layer sound output hole has larger area allowing dust to easily enter the receiver
Solution Approach 1:
A baffle is introduced as an intermediary component between the inner-layer sound output hole and the receiver. The baffle selectively blocks dust particles while allowing sound waves to pass through, resolving the contradiction between maintaining sound quality and preventing dust entry. The baffle acts as a mediator that filters harmful particles while preserving the acoustic function.
Solution Approach 2:
The baffle is positioned specifically at the inner-layer sound output hole where dust entry is most problematic. By applying the protective function locally at the critical interface between the sound hole and receiver, the solution prevents dust accumulation without affecting the overall sound output quality of the receiver.
2Strength
If the inner-layer sound output hole area is made larger for better sound output, then sound quality is improved, but dust and fine impurities can easily enter and accumulate in the receiver front cavity
Solution Approach 1:
The baffle serves as a mediator that allows the inner-layer sound output hole to maintain its larger area for optimal sound output while simultaneously preventing dust and fine impurities from entering the receiver. The baffle's selective permeability enables sound waves to pass through while blocking particulate contaminants.
Solution Approach 2:
The baffle is positioned in advance at the sound output hole to prevent dust entry before contamination can occur. This preliminary protective measure stops dust and impurities from accumulating in the receiver front cavity, eliminating the need for later maintenance or cleaning operations.
3Device complexity
If no sliding cover or raising mechanism is used for front-facing camera, then the design is simpler, but dust can enter through the exposed receiver sound output hole
Solution Approach 1:
The baffle acts as a permanent intermediary protective structure at the receiver sound output hole, providing continuous dust protection regardless of whether the front-facing camera module is in a raised or lowered position. This eliminates the need for sliding covers or complex raising mechanisms while maintaining protection against dust entry.
Solution Approach 2:
The baffle provides automatic, passive protection against dust entry without requiring any active control mechanisms, sliding covers, or raising mechanisms. The protective function is self-service in nature, continuously preventing dust accumulation without adding mechanical complexity to the camera module design.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution effectively prevents dust from entering the receiver, reducing noise issues and simplifying maintenance by ensuring the receiver remains clean, thereby enhancing product reliability and user experience.
Implementation Method 1
a driving element, such as an elastic element or a magnetic element, is disposed in the second terminal portion 2
Implementation Method 2
a driving element, such as an elastic element or a magnetic element, is disposed in the second terminal portion 2
Data Source
Figure 1~2
Figure 3~4
Figure 5~6
AI summary
The present disclosure discloses a mobile terminal, including: a first terminal portion disposed with a first sound output hole; and a second terminal portion disposed with a second sound output hole and a receiver, where the second terminal portion can move between a first position and a second position relative to the first terminal portion. At the first position, the first sound output hole is connected to the second sound output hole, and at the second position, the second sound output hole is staggered from the first terminal portion. A baffle is disposed on the second terminal portion. The second terminal portion is located at the second position relative to the first terminal portion, and the baffle covers the second sound output hole. The second terminal portion is located at the first position relative to the first terminal portion, the baffle is removed away from the second sound output hole, and the first sound output hole is connected to the second sound output hole.