Protective Case Metal Plate Layout for Magnetic Mounting and Charging
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Solution Overview
Problem
Magnetic mounts for electronic devices often interfere with wireless charging by blocking the electromagnetic field, preventing the device from charging properly.
Innovation Solution
A metal plate with a rounded concave edge is designed to allow magnetic attachment to a support without overlapping with the receiver coil, enabling wireless charging while maintaining magnetic retention.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If a metal plate is used for magnetic attachment, then magnetic retention is improved, but wireless charging is impeded because the metal plate blocks the electromagnetic field
Solution Approach 1:
The metal plate is segmented by providing cutouts that divide the plate into separate regions. This segmentation allows the electromagnetic field to pass through the cutout areas while the metal portions maintain magnetic attachment, thus resolving the contradiction between magnetic retention and wireless charging compatibility
Solution Approach 2:
Different regions of the plate are given different properties: the metal portions provide magnetic attachment capability while the cutout regions provide electromagnetic field transparency. This local differentiation allows each region to fulfill its specific function without interfering with the other
2Force
If the metal plate is positioned to enable magnetic attachment, then magnetic retention is improved, but the receiver coil area is blocked preventing wireless charging
Solution Approach 1:
The plate is divided into metal regions for magnetic attachment and cutout regions that expose the receiver coil area. This segmentation ensures that the metal plate provides sufficient magnetic force while leaving the receiver coil area completely accessible for electromagnetic field penetration and wireless charging
Solution Approach 2:
The cutout regions effectively remove metal material from areas where it would block the receiver coil. This extraction of unnecessary metal portions allows the receiver coil to function fully while retaining magnetic attachment capability in the remaining metal areas
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 metal plate allows for magnetic attachment and retention of the electronic device, preventing interference with wireless charging, allowing the device to charge effectively from various orientations and positions without removing the metal plate.
Implementation Method 1
The metal plate is constructed to enable magnetic retention or attachment of the case to a support having a magnet
Implementation Method 2
Wireless charging uses an electromagnetic field to transfer energy between two objects through electromagnetic induction
Data Source
AI summary
A case for an electronic device wherein the electronic device has a receiver coil for wireless charging and the receiver coil is formed in between an inner circle and an outer circle, includes: a hard protective frame constructed to receive the electronic device therein wherein the hard protective frame faces the electronic device; and a metal plate constructed to be received in the recess. The metal plate is constructed to enable magnetic retention or attachment of the case to a support having a magnet. The metal plate has a rounded concave edge, and the metal plate does not overlap with the inner circle. Preferably, the rounded concave edge, the inner circle, and the outer circle are substantially symmetrical with respect to a same line.