Invisible headliner microphone
AssigneeHarman Becker Automotive Systems GmbH
InventorsMarco Salvatore Riemann, Darin Krajewski, Marian Avram, Viktor Dobos
Life of this patent
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Abstract
A microphone assembly includes a shaft element that is configured to be received in an opening defined by a base substrate layer of a headliner. The shaft element defines an air path. The microphone assembly includes a microphone element mounted on a circuit board within a housing. The microphone element is aligned with the air path such that the air path directs sound from the cabin to the microphone element. A vehicle cabin side of the headliner is covered by an acoustically transparent layer such that the microphone assembly is not visible within the vehicle cabin.
Claims20
A microphone assembly comprising:
- a housing including an integrally-formed hollow shaft element that is configured to be received by an opening in a base substrate layer of a headliner to define at least a portion an air path;
- a circuit board coupled within the housing;
- a gasket element disposed between the circuit board and the shaft element and configured to extend the air path to the circuit board;
- and
- a microphone element coupled to the circuit board and aligned with the air path such that the air path directs sound from a vehicle cabin to the microphone element,
- wherein the circuit board is positioned above the shaft element and the gasket element;
- wherein the shaft element, the gasket element and the circuit board are axially aligned with one another about a first axis to define the air path;
- and
- wherein the shaft element, the gasket element, and the circuit board are positioned on an underside of the microphone element to enable sound to pass along the first axis of the air path directly to the underside of the microphone element.
A microphone assembly comprising:
- a base defining an integrally-formed hollow shaft element that is configured to be received by an opening in a base substrate layer of a headliner to define at least a portion of an air path;
- a circuit board;
- a housing configured to cooperate with the base to enclose the circuit board;
- a gasket element disposed between the circuit board and the shaft element and configured to extend the air path to the circuit board;
- and
- a microphone element coupled to the circuit board and aligned with the air path such that the air path directs sound from a vehicle cabin toward the microphone element,
- wherein the circuit board is positioned above the shaft element and the gasket element;
- wherein the shaft element, the gasket element and the circuit board are axially aligned with one another about a first axis to define the air path;
- and
- wherein the shaft element, the gasket element, and the circuit board are positioned on an underside of the microphone element to enable sound to pass along the first axis of the air path directly to the underside of the microphone element.
Dependencies are inferred from the claim text.