Tuner Module Elastic Coupling for Noise Shielding
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Solution Overview
Problem
Digital TVs with added functions like HDMI, USB, Bluetooth, and Wi-Fi suffer from issues such as out-of-proportion screen scenes and channel skips due to noise interference from set-top boxes, which existing tuner modules fail to adequately shield against.
Innovation Solution
A tuner module with a modified coupling structure between the chassis and upper/lower covers, featuring holes in the chassis for elastic fixation and hitching ends to securely couple the covers, enhancing shielding performance against ambient noise.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the upper/lower covers are coupled to the chassis using conventional pressing structures, then the manufacturing process is simple, but the contact reliability is insufficient and external noise can enter the chassis interior
Solution Approach 1:
The patent employs elastic deformation of metal sheets to create a dynamic coupling mechanism. The first and second metal sheets are elastically deformed to form engagement protrusions that dynamically engage with corresponding recesses in the chassis, allowing the coupling structure to adapt to manufacturing tolerances while maintaining reliable contact
Solution Approach 2:
The patent uses thin metal sheets with elastic properties to create flexible coupling elements. These metal sheets can be elastically deformed during assembly and maintain continuous contact pressure against the chassis, ensuring reliable noise shielding while accommodating dimensional variations
2Object-affected harmful factors
If the shielding plate is integrally manufactured with the chassis by press processing, then the manufacturing efficiency is high, but the shielding performance against ambient noise is insufficient
Solution Approach 1:
The patent divides the shielding structure into separate components: the chassis and multiple independent metal sheets (first and second metal sheets) that can be manufactured separately and then assembled. This segmentation allows each component to be optimized independently while achieving superior overall shielding performance through layered construction
3Reliability
If conventional coupling structures are used between covers and chassis, then the device assembly is simple, but contact failure occurs due to manufacturing tolerances or reduced elasticity
Solution Approach 1:
The patent employs asymmetric engagement features where the first metal sheet forms an engagement protrusion that fits into a corresponding asymmetric recess in the chassis, and the second metal sheet provides a complementary engagement structure. This asymmetric design ensures proper orientation and stable contact while accommodating manufacturing variations
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 secure coupling of the tuner module's covers with the chassis effectively prevents external noise from entering, improving digital reception sensitivity and reducing errors in signal decoding, even with manufacturing tolerances or reduced elasticity.
Implementation Method 1
allow an elastic fixation end of the upper cover to be inserted and coupled with the hole
Implementation Method 2
allow an elastic hitching end of the lower cover to apply pressure to the hole and the elastic fixation end
Data Source
AI summary
A tuner module is characterized by: a chassis formed with lateral surfaces wrapping four corners to open both sides; an upper cover covering one opened side of the chassis to be provided with an elastic fixation end that is fixed at the lateral surface; and a lower cover applying pressure to an external surface of the elastic fixation end to cover the other opened side of the chassis whereby another elastic hitching end that is fixed at the lateral surface is provided.