Battery Cover Plate Vertical Screw Fixing for Antenna Stability
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Solution Overview
Problem
Current metal housings for electronic devices face issues with unstable antenna fixation, leading to signal attenuation and failure due to the difficulty in achieving reliable connection between the metal dome and the housing, which is exacerbated by the need for horizontally arranged fixing screws that are time-consuming and costly to implement.
Innovation Solution
A housing design featuring a metal base body, side frame portion, and fixing portion, where the metal dome is fixed using a vertically arranged screw through a fixing element penetrating the fixing portion perpendicular to the base body, simplifying the structure and reducing production costs by avoiding the use of horizontally arranged screws.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If horizontally arranged fixing screws are used to fix the metal dome, then the antenna connection can be achieved, but the manufacturing complexity and production time increase significantly
Solution Approach 1:
The patent inverts the conventional horizontal screw arrangement to a vertical arrangement. The through hole is formed vertically through the housing base instead of horizontally, and the fixing screw is arranged vertically to pass through the through hole and fix the metal dome. This inversion simplifies the manufacturing process by avoiding complex horizontal drilling and threading operations while maintaining reliable antenna fixation.
2Reliability
If horizontally arranged fixing screws are used, then the antenna connection can be established, but the production cost and manufacturing time increase
Solution Approach 1:
The patent changes the screw arrangement from horizontal to vertical orientation. The through hole extends vertically through the housing base, allowing the fixing screw to be installed vertically. This simplifies the manufacturing process, reduces production time, and lowers costs while ensuring reliable antenna connection, directly improving productivity.
3Temperature
If metal housings are used to provide metallic texture and heat dissipation, then the appearance and thermal performance improve, but the antenna fixation stability deteriorates
Solution Approach 1:
The patent segments the housing structure into distinct components: the housing base, the metal dome, and the fixing portion with through hole. This segmentation allows the metal housing to maintain its heat dissipation properties while the dedicated fixing portion with vertical through hole provides stable antenna fixation. The metal dome is separately fixed to the housing base, ensuring both thermal performance and connection reliability.
Data Source
Figure 1~2
Figure 3~4
Figure 5~6(c)
AI summary
A battery cover, a preparation method, a housing assembly and a mobile terminal. The battery cover includes: a base body (100); a side frame portion (200) vertically arranged on an edge of the base body (100); and a fixing portion (300) parallel to the base body (100) and arranged at one side of the side frame portion (200) which is away from the base body (100), where the base body (100), the side frame portion (200) and the fixing portion (300) are made of metal.