Sealing wiring holes in electronic devices

Patent metadata

Field	Value
Publication number	US-9247335-B2
Application number	US-201313826430-A
Country	US
Kind code	B2
Filing date	Mar 14, 2013
Priority date	Mar 14, 2013
Publication date	Jan 26, 2016
Grant date	Jan 26, 2016

Abstract

A wall separates a first volume from a second volume and has a hole allowing passage between the first volume and the second volume. A wire passes through the hole, and a gasket surrounds the wire at the hole. The gasket includes a first section including a groove between a first flange and a second flange, the groove has an outer diameter matched to the diameter of the hole and the flanges have outer diameters greater than the diameter of the hole. A second section adjacent the first flange includes a tubular portion having a diameter less than the diameter of the hole and a tapered section smoothly transitioning from the diameter of the tubular portion to the diameter of the first flange. The gasket prevents flow of fluid through the hole between the first volume and the second volume.

First claim

What is claimed is:

1. An apparatus comprising:
an enclosure having a wall separating a first volume from a second volume;
the wall defining a hole having a diameter and allowing passage between the first volume and the second volume;
a wire passing through the hole; and
a gasket surrounding the wire at the hole,
the gasket comprising:
a first section including a groove between a first flange and a second flange, the groove having an outer diameter matched to the diameter of the hole and the flanges having outer diameters greater than the diameter of the hole,
a second section adjacent the first flange and including a tubular portion having a diameter less than the diameter of the hole, and a tapered section smoothly transitioning from the diameter of the tubular portion to the diameter of the first flange, and
a bore passing through the first and second sections and having an inner diameter matched to the diameter of the wire;

the gasket preventing flow of fluid through the hole between the first volume and the second volume; wherein
the diameter of the bore and the coefficient of friction solely between the gasket and the wire are such that before being positioned in the hole, the force required to pull the wire through the gasket is more than the force required to pull the tapered section and the first flange of the gasket through the hole, and
the diameter of the bore, the outer diameter of the groove, and the coefficient of friction solely between the gasket and the wire are such that when positioned in the hole, the force required to pull the wire through the gasket is less than the force required to pull the second flange of the gasket through the hole.

2. The apparatus of claim 1 wherein the gasket prevents the flow of air through the hole.

3. The apparatus of claim 1 wherein the gasket prevents the flow of water through the hole.

4. The apparatus of claim 1 wherein the gasket has a hardness of 50 Shore A.

5. The apparatus of claim 1 wherein the outer diameter of the groove is greater than the diameter of the hole.

6. The apparatus of claim 1 wherein the enclosure comprises the body of a headphone,
first volume is a back cavity of the headphone containing the back side of an acoustic driver, and
the outer diameter of the groove and the coefficient of friction between the gasket and the side wall of the hole are such that when the gasket is positioned in the hole, the force required to push the second flange of the gasket through the hole is greater than the acoustic pressures produced inside the first volume by operation of the acoustic driver.

7. The apparatus of claim 1 wherein the enclosure comprises the body of an active noise reducing headphone having an acoustic driver, and
the first volume comprises a back cavity containing a first side of the acoustic driver, and
the second volume is open to free space around the headphones.

8. The apparatus of claim 1 wherein the enclosure comprises the body of an active noise reducing headphone having an acoustic driver, and
the first volume comprises a back cavity containing a first side of the acoustic driver, and the second volume comprises a front cavity coupling a second side of the acoustic driver to the ear of a user when the headphones are worn.

9. The apparatus of claim 1 wherein the enclosure comprises the body of an active noise reducing headphone having an acoustic driver, and
the first volume comprises a front cavity coupling a first side of the acoustic driver to the ear of a user when the headphones are worn, and
the second volume is open to free space around the headphones.

10. The apparatus of claim 1 , wherein the enclosure comprises a water-tight case for a mobile electronic device,
the first volume comprises the interior of the case, and
the second volume comprises free space around the case.

Assignees

• Bose Corp

Inventors

• Taylor Tristan Edward
• Reich Aaron Michael

Classifications

• H04R1/1033 Primary

  Cables or cables storage, e.g. cable reels (cord reels per se H02G11/02; arrangements for storing and repeatedly paying-out and re-storing lengths of conductors or cables B65H75/34; extensible conductors or cables, e.g. self-coiling cords H01B7/06) · CPC title

• H02G3/083

  Inlets · CPC title

• Y10T29/49117

  Conductor or circuit manufacturing · CPC title

• H02G3/088

  Dustproof, splashproof, drip-proof, waterproof, or flameproof casings or inlets · CPC title

• H02G3/22

  Installations of cables or lines through walls, floors or ceilings, e.g. into buildings · CPC title