Ear Cup With Micrphone Device

• US 20080187150A1
• Filed: 04/26/2006
• Published: 08/07/2008
• Est. Priority Date: 04/29/2005
• Status: Active Grant

• Current Assignee: 3M Innovative Properties Company (3M Company)
• Original Assignee: Peltor Aktiebolag (Aearo Peltor AB)
• Inventors: Heringslack, Henrik
• Granted Patent: US 8,224,011 B2
• Time in Patent Office: Days
• US Class Current: 381/72
• CPC Class Codes: A61F 11/14 external, e.g. earcaps or earmuffs
• CPC Class Codes: H04R 1/086 Protective screens, e.g. all weather or wind screens
• CPC Class Codes: H04R 1/1075 Mountings of transducers in earphones or headphones

Abstract

An ear cup with a microphone apparatus including an inner cup portion, for forming a noise damping space, and an outer cup portion for forming a space for accommodating electronics and/or a current source. The inner cup portion and the outer cup portion are separated by a partition. The inner cup portion has a pocket and two opposingly located recesses in which a bracket for a microphone is disposed. Over the microphone, a windshield is provided, this protecting the microphone from being damaged and also damping wind noise. The windshield has an outer configuration that may be seen as a continuation of the outer cup portion, in order to prevent turbulence in the region of the windshield. The windshield is produced from a porous material, which is surrounded by a mounting frame having nap catches for engagement in snap catches.

Claims

1. An ear cup with a microphone apparatus comprising:

a first, inner cup portion for forming a noise damping space,

a second, outer cup portion for forming a space for accommodating electronics and/or a current source,

a partition separating the two spaces from one another, and

a microphone provided with a windshield of porous material for receiving sound from the surroundings,

wherein the microphone is disposed on an inside of the outer cup portion, which has an opening in front of the microphone, the outer surface of the windshield is disposed as a continuation of external surfaces of the outer cup portion, these external surfaces coextending adjacent with the windshield, and a cavity is disposed between the inside of the windshield and the opening.

2. The ear cup as claimed in claim 1, wherein the cavity is formed by an inward bulge in the wall of the outer ear cup portion.

3. The ear cup as claimed in claim 1, wherein the cavity is arched, funnel-shaped with the opening of the microphone at the narrowest portion of the cavity.

4. The ear cup as claimed in any of claims 1, wherein the cavity has a defining surface on an outside of the outer cup portion, this defining surface being approximately hemispherical and having the opening at a deepest part.

5. The ear cup as claimed in claim 1, wherein the microphone is disposed in a pocket on the an outside of the inner cup portion, that, in association with the pocket, there is provided a second inward bulge for accommodating the inward bulge in the outer cup portion.

6. The ear cup as claimed in claim 5, wherein the pocket is closed towards the interior of the inner cup portion, and that a conductor accommodating space leads from the pocket to a connection space exteriorly on the inner cup portion.

7. The ear cup as claimed in claim 5, wherein the microphone with its connection conductors is disposed as a unit together with a bracket for positional fixing in the pocket.

8. The ear cup as claimed in claim 7, wherein the bracket has projecting wings for accommodation in corresponding recesses in the pocket.

9. The ear cup as claimed in claim 7, wherein the bracket is produced from a yieldable material for realising an acoustic break between the inner cup portion and the microphone.

10. The ear cup as claimed in claim 1, wherein the windshield is countersunk in a recess or a flange in the outside of the outer cup portion, the recess surrounding the cavity.

11. The ear cup as claimed in claim 1, wherein there is disposed, along the periphery of the windshield and on its outside, a frame whose outer surfaces lie in a plane with adjacent surfaces on the outside of the outer cup portion.

12. The ear cup as claimed in claim 11, wherein the frame and the outer cup portion have mutually cooperating snap connections.