Negative pressure earphone

• US 20130259286A1
• Filed: 03/30/2012
• Published: 10/03/2013
• Est. Priority Date: 03/30/2012
• Status: Active Grant

• Current Assignee: Eastern Technologies Holding Limited
• Original Assignee: Eastern Technologies Holding Limited
• Inventors: Chung, Chu Ming, Tang, Lee Pin
• Granted Patent: US 8,737,665 B2
• Time in Patent Office: Days
• US Class Current: 381/380
• CPC Class Codes: H04R 1/1016 Earpieces of the intra-aural type
• CPC Class Codes: H04R 1/2834 for loudspeaker transducers
• CPC Class Codes: H04R 1/44 Special adaptations for subaqueous use, e.g. for hydrophone

Abstract

A negative pressure earphone includes a main body, a cover portion, a silica gel earplug, a filtering net and a moving coil sound unit. The silica gel earplug is fitted to the protruding end of the main body. The filtering net is provided on the opening of the protruding end and the moving coil sound unit is disposed inside the main body. The cover portion is fitted to the other end of the main body. A sealing framework portion is disposed inside the main body and the moving coil sound unit is fitted to the sealing framework portion. A negative pressure portion is disposed on the sealing framework portion. The negative pressure earphone of the present invention is structurally simple and water resistant and does not have to have an opening in its cover portion.

Claims

1. A negative pressure earphone, comprising:

a main body;

a cover portion, fitted to the rear end of the main body;

a silica gel earplug, fitted to the protruding end of the main body;

a filtering net, fitted to the protruding end of the main body; and

a moving coil sound unit, disposed inside the main body,

wherein a sealing framework portion is disposed inside the main body and the moving coil sound unit is fitted to the sealing framework portion, and that a negative pressure portion is disposed on the sealing framework portion and the moving coil sound unit and the negative pressure portion are horizontally fitted to the sealing framework portion.

2. The negative pressure earphone as in claim 1, wherein the negative pressure portion may comprise one or more negative pressure elements, which are disposed on the sealing framework portion, and wherein the sealing framework portion, negative pressure portion and moving coil sound unit may be fitted or arranged in different manners and at different angles.

3. The negative pressure earphone as in claim 1, wherein the negative pressure portion has a planer base portion, which may be made of a thin film or layer of metal, macromolecular chemical or organic material.

4. The negative pressure earphone as in claim 3, wherein the base portion is sandwiched between a lower portion and an upper portion, which are made of a composite material.

5. The negative pressure earphone as in claim 4, wherein the composite material may be metal, macromolecular chemical or organic material.

6. The negative pressure earphone as in claim 3, wherein a connective portion is provided on either side of the planer base portion and an opening provided in the middle part of the planer base portion is optional and does not affect the functionality.

7. The negative pressure earphone as in claim 6, wherein an end piece may be connected to the end of either connective portion and these two end pieces are provided to facilitate the manufacturing and are optional and do not affect the functionality.

8. The negative pressure earphone as in claim 3, wherein the surfaces of the two connective portions, lower portion and upper portion may be smooth or have a certain pattern.