Antenna Pattern Frame Injection Molding for Device Case Integration

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Solution Overview

Problem

Existing mobile communication terminals face issues with external antennas being vulnerable to impacts and internal antennas increasing device size, while simple adhesive attachments lead to reliability and aesthetic problems, and antenna films are costly and difficult to attach.

Innovation Solution

An antenna pattern frame with a radiator and over-molded antenna pattern part buried within an electronic device case, using injection-molding to secure the antenna pattern part to the radiator frame and prevent separation, and a method for manufacturing this frame and case to integrate the antenna effectively.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If adhesive is used to attach flexible antenna to terminal body, then antenna can be integrated into terminal, but reliability deteriorates when adhesive is weak and external appearance suffers

Engineering Contradiction:

Improveantenna integrationVSAvoidantenna attachment reliability

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The antenna pattern part is merged with the radiator frame through injection molding, creating an integrated structure where the antenna pattern part is formed directly on the radiator frame surface. This eliminates the need for separate adhesive attachment while ensuring reliable mechanical bonding.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The invention uses composite construction with the radiator frame and antenna pattern part as integrated components. The antenna pattern part is formed as a separate layer on the radiator frame through injection molding, creating a composite structure that maintains both structural integrity and antenna functionality.

Inventive Principle:

Principle #40Composite materials

2Reliability

If antenna film is used to secure antenna stability, then product stability is improved, but attachment difficulty increases and fabrication cost becomes excessive

Engineering Contradiction:

Improveproduct stabilityVSAvoidantenna attachment ease

Core Design Contradiction:

ReliabilityVSEase of manufacture

Solution Approach 1:

The antenna pattern part and radiator frame are merged into a single integrated component through injection molding. The antenna pattern part is formed directly on the radiator frame during the molding process, eliminating the need for separate antenna film attachment steps and reducing manufacturing complexity.

Inventive Principle:

Principle #5Merging (Combining)

3Adaptability or versatility

If antenna pattern part is formed on radiator frame surface, then antenna can be buried in device case, but antenna pattern part may become separated from radiator frame

Engineering Contradiction:

Improveantenna burial capabilityVSAvoidantenna pattern part bonding

Core Design Contradiction:

Adaptability or versatilityVSStability of the object's composition

Solution Approach 1:

The antenna pattern part is merged with the radiator frame through injection molding, creating a unified structure where the antenna pattern part is formed directly on the radiator frame surface. This integrated construction prevents separation while enabling the antenna to be buried within the device case.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The invention employs composite construction with the antenna pattern part formed as an integrated layer on the radiator frame. This composite structure maintains strong bonding between the antenna pattern part and radiator frame while allowing the antenna to be embedded in the device case.

Inventive Principle:

Principle #40Composite materials

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 enhances antenna reliability and durability, reduces manufacturing costs, and maintains a sleek device appearance by securely integrating the antenna within the device case without the need for protective films, addressing the vulnerabilities of external and internal antennas.

Implementation Method 1

a radiator frame having the radiator injection-molded to have the antenna pattern part formed thereon and including the antenna pattern part buried on an inner side of an electronic device

Methodology Applied

Scientific EffectInjection molding:

Implementation Method 2

an over-mold part injection-molded together with the radiator frame and over-molded so as to be formed on the antenna pattern part in order to prevent the antenna pattern part from becoming separated from the radiator frame

Methodology Applied

Scientific EffectOver-molding:

Data Source

PatentUS9419326B2Antenna pattern frame, method and mold for manufacturing the same, method for manufacturing an electronic device case, and electronic device

Publication Date: 2016.08.16 SAMSUNG ELECTRO MECHANICS CO LTD

AI summary

An antenna pattern frame includes: a radiator having an antenna pattern part for receiving an external signal; a radiator frame having the radiator injection-molded to have the antenna pattern part formed thereon and including the antenna pattern part buried at an inner side of an electronic device; and an over-mold part injection-molded together with the radiator frame and over-molded to be formed on the antenna pattern part in order to prevent the antenna pattern part from becoming separated from the radiator frame.