Hinge Chassis Notch and Resin Base for Radio Wave Transmission
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Solution Overview
Problem
The manufacturing cost of electronic devices with metallic chassis is increased due to complex fitting parts for rubber feet, and the presence of metal chassis hinders radio wave communication quality when equipped with antenna devices.
Innovation Solution
The design incorporates a notch-shaped part on the chassis and a resin support base with a rubber foot, allowing for simplified manufacturing and improved radio wave transmissivity by separating the rubber foot from the metal surface, enabling better communication quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If complex fitting parts are formed on the metal chassis to directly attach rubber feet, then the rubber feet can be securely mounted, but the manufacturing cost increases due to complex mold requirements
Solution Approach 1:
The invention divides the rubber foot attachment system into separate components: a simple notch-shaped part formed on the metal chassis and a separate resin support base that houses the rubber foot. This segmentation eliminates the need for complex fitting parts on the chassis while maintaining secure mounting through the resin base that integrates the rubber foot.
Solution Approach 2:
The resin support base acts as an intermediary component between the metal chassis and the rubber foot. Instead of directly attaching the rubber foot to the metal chassis (which would require complex fitting parts), the resin base mediates this connection, providing a simpler interface on the metal chassis (notch-shaped part) while maintaining secure attachment functionality.
2Strength
If the chassis is made of metal to achieve light weight and high strength, then structural integrity is improved, but radio wave transmissivity deteriorates affecting antenna communication quality
Solution Approach 1:
The invention segments the bottom surface area into metal chassis portions (for structural strength) and a resin support base portion (for radio wave transmissivity). The resin base is positioned at the antenna location to create a radio wave transmission window, while the metal chassis maintains overall structural integrity in other areas.
Solution Approach 2:
The invention applies different material properties to different locations: metal material is used for the chassis structure requiring strength, while resin material is used locally at the antenna position where radio wave transmissivity is required. This local differentiation of material quality resolves the contradiction between overall structural strength and local radio wave transmission.
3Ease of manufacture
If a simple notch-shaped part is formed on the chassis instead of complex fitting parts, then manufacturing cost is reduced, but rubber foot attachment complexity increases requiring separate resin support base
Solution Approach 1:
The invention merges the rubber foot attachment function with the resin support base structure. The resin base is designed to house and attach the rubber foot as an integrated assembly, which is then mounted to the simple notch-shaped part on the chassis. This merging reduces chassis complexity while maintaining attachment functionality through the integrated resin base design.
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 reduces manufacturing costs and enhances communication quality by allowing radio waves to pass through the resin support base and notch-shaped part, while maintaining the structural integrity of the rubber foot.
Implementation Method 1
the support base made of resin and the rubber foot disposed therein transmit radio waves sent/received by the antenna device
Data Source
AI summary
An electronic device includes a hinge device rotatably connecting a main body chassis and a display chassis, a notch-shaped part provided in a bottom surface of the main body chassis at a position overlapping with at least a part of the hinge device and formed by removing a part of the bottom surface from its one edge part toward the other edge part, a support base made of resin and provided so as to cover a part of the notch-shaped part, and a rubber foot provided on the support base and protruding from the bottom surface of the main body chassis through the notch-shaped part.