Shield for acoustic device
AssigneeApple Inc.
InventorsJared M. Kole, Martin J. Auclair, Richard A. Besen
Life of this patent
Estimating the term…
Abstract
An electronic device having one or more magnets disposed within it (e.g., such as in a speaker) is equipped with a magnetic shield that attenuates magnetic fields propagating outside of the electronic device. The magnetic shield may be placed within the device such that it redirects the magnetic fields to contain them better within the one or more magnets, resulting in improved magnetic efficiency. In further embodiments, the magnetic shield may also function as a structural part of the electronic device and/or an electronic component with in the electronic device.
Claims9
An electronic device comprising:
- a housing forming an exterior surface of the electronic device, the housing having a front panel disposed opposite a rear panel, wherein the rear panel is formed from a high permeability magnetic material;
- a speaker disposed within the housing and including a primary magnet and a speaker diaphragm, wherein the speaker diaphragm is oriented parallel to the front panel and the rear panel;
- and
- a side panel extending between the front and rear panels and oriented substantially perpendicular to the speaker diaphragm, the side panel having a speaker aperture formed there through that is acoustically coupled to the speaker.
An electronic device comprising:
- a housing formed from a front panel, a rear panel and a side panel, wherein the front panel is oriented parallel to and spaced a distance apart from the rear panel, wherein the side panel extends between the front panel and the rear panel, and wherein the rear panel is formed from a high permeability magnetic material;
- a speaker disposed within the housing between the front panel and the rear panel and having a primary magnet and a speaker diaphragm, wherein the speaker diaphragm is oriented substantially perpendicular to the side panel;
- and
- a speaker aperture formed through the side panel.
A method of attenuating magnetic fields outside of an electronic device comprising:
- forming a housing for the electronic device, comprising a front panel disposed parallel to and spaced a distance apart from a rear panel and a side panel extending between the front panel and the rear panel, wherein the rear panel is formed from a high permeability magnetic material;
- disposing a speaker between the front panel and the rear panel wherein the speaker includes a primary magnet and a diaphragm oriented perpendicular to the side panel;
- and
- forming a speaker aperture through the side panel.
Dependencies are inferred from the claim text.