Chassis Conductive Protrusion Antenna Design
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Solution Overview
Problem
The miniaturization and thinning of electronic apparatus chassis make it difficult to ensure sufficient installation space for antennas, compromising communication quality and chassis strength, especially at connection points between resin and metal materials.
Innovation Solution
Incorporating a conductive part with protrusion portions into the chassis outer wall, where the conductive part functions as an antenna element and is joined to a resin-based radio wave transmission part, enhancing both communication quality and chassis strength through electrical connections and high joining strength.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a resin material part is provided at the outer wall of the chassis to ensure antenna communication quality, then communication quality is improved, but the chassis strength is reduced
Solution Approach 1:
The patent employs a composite structure where a conductive part (metal material) is integrated with the resin material part at the chassis outer wall. The conductive part serves dual purposes: maintaining structural strength and functioning as an antenna element. The resin material part ensures radio wave transmission quality, while the conductive part provides mechanical reinforcement, creating a synergistic composite structure that resolves the contradiction between communication quality and chassis strength.
2Volume of moving object
If the chassis is miniaturized and thinned to reduce device size, then device compactness is improved, but the installation space for the antenna is reduced
Solution Approach 1:
The conductive part integrated into the chassis outer wall serves multiple functions simultaneously: it acts as a structural reinforcement element to maintain chassis strength, functions as an antenna element for wireless communication, and provides electrical connection points. This multi-functional design eliminates the need for separate antenna components, thereby resolving the contradiction between device compactness and antenna installation space.
3Strength
If a metal material part is provided at the outer wall of the chassis to maintain chassis strength, then chassis strength is improved, but communication quality of the antenna is reduced
Solution Approach 1:
The patent applies local quality by providing a conductive part (metal material) at specific locations on the chassis outer wall where structural strength is needed, rather than making the entire chassis metal. The resin material parts are provided at other locations where radio wave transmission is critical. This spatial differentiation of material properties resolves the contradiction between chassis strength and communication quality by optimizing material placement according to local functional requirements.
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
This configuration ensures high communication quality while minimizing space occupancy and strengthens the chassis by providing a robust connection between the conductive and resin materials, maintaining stability even at corners prone to shock.
Implementation Method 1
a conductive part provided to configure an outer wall of the chassis and formed of a conductive material... The conductive part functions as an antenna element of the antenna by an electrical connection of the first protrusion portion to the antenna
Implementation Method 2
The conductive part has a first protrusion portion protruded toward the inside of the chassis and joined to the resin material forming the radio wave transmission part... the conductive part is joined to the resin material of the radio wave transmission part through the first protrusion portion
Data Source
AI summary
An electronic apparatus includes a conductive part provided to configure an outer wall of a main body chassis and formed of a conductive material, a radio wave transmission part provided to configure the outer wall of the main body chassis and formed of a resin material, and a first antenna provided at a position facing the radio wave transmission part inside the main body chassis. The conductive part has a first protrusion portion protruded toward the inside of the main body chassis and joined to the resin material which forms the radio wave transmission part. The first protrusion portion is electrically connected to the first antenna.