Antenna Pattern Frame Embedded in Device Case via Injection Molding
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Solution Overview
Problem
Existing mobile communications terminals face challenges with external antennas being susceptible to damage and internal antennas increasing device volume, necessitating the development of integrated antennas that are stably fixed within the device case without protruding externally and protected from injection liquids.
Innovation Solution
An antenna pattern frame with a radiator and a mold design that embeds the antenna pattern frame within the device case through injection molding, using a radiator frame with a hydraulic recess or support hole to securely position the antenna pattern and connection terminal, preventing protrusion and ensuring stable signal transmission and reception.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If external antennas are used, then signal transmission and reception are enabled, but the antennas are susceptible to damage by external shock
Solution Approach 1:
The antenna pattern frame is embedded within the electronic device case through injection molding, creating a nested structure where the antenna is housed inside the protective case. This nesting approach protects the antenna from external shock while maintaining its signal transmission function.
2Reliability
If internal antennas are used, then antenna protection is improved, but the volume of terminals increases
Solution Approach 1:
The antenna pattern frame and electronic device case are merged into a single integrated component through injection molding. The antenna is formed integrally with the case, eliminating the need for separate antenna housing and reducing overall terminal volume while maintaining protection.
3Reliability
If antenna pattern frame is embedded through injection molding, then antenna protection and integration are achieved, but the connection terminal must be protected from injection liquid
Solution Approach 1:
The connection terminal portion is extracted or positioned outside the injection molding process zone, allowing it to be protected from injection liquid while the antenna pattern portion is embedded in the case through injection molding.
Solution Approach 2:
A mold cavity or barrier structure acts as an intermediary between the injection liquid and the connection terminal, preventing direct contact while allowing the injection molding process to complete the antenna embedding.
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 embeds the antenna pattern frame within the device case, preventing external damage and volume increase, while maintaining signal integrity and protecting the connection terminal from injection liquids, thus enhancing the reliability and design of mobile communications terminals.
Implementation Method 1
The radiator frame contacts the mold by injection pressure
Data Source
AI summary
There is provided an antenna pattern frame including: a radiator comprising an antenna pattern portion transmitting and receiving a signal and a connection terminal portion allowing the signal to be transmitted to and received from a circuit board of an electronic device; and a radiator frame manufactured by injection molding on the radiator, allowing the antenna pattern portion to be embedded in a case of the electronic device, and supporting the radiator. The radiator frame includes a hydraulic recess introducing a resin material to a mold for manufacturing a case of the electronic device in which the radiator is embedded through injection molding, so that the radiator frame contacts the mold by injection pressure.