Earmuff structure for headset or ear protector

• US 20050220318A1
• Filed: 04/02/2004
• Published: 10/06/2005
• Est. Priority Date: 04/02/2004
• Status: Active Grant

• Current Assignee: David Han
• Original Assignee: David Han
• Inventors: Han, David
• Granted Patent: US 7,245,735 B2
• Time in Patent Office: Days
• US Class Current: 381/371
• CPC Class Codes: A61F 11/14 external, e.g. earcaps or earmuffs
• CPC Class Codes: H04R 1/1008 Earpieces of the supra-aural or circum-aural type
• CPC Class Codes: H04R 1/1025 Accumulators or arrangements for charging secondary cells per se H01M10/00; charging in general H02J7/00
• CPC Class Codes: H04R 1/1075 Mountings of transducers in earphones or headphones
• CPC Class Codes: H04R 5/033 Headphones for stereophonic communication details thereof, e.g. relating to batteries, cables or control elements H04R1/10

Abstract

An earmuff structure for headset or ear protector includes two earmuff shells and two integrally injection molded speaker mounting plates that are screwed to an inner side of the earmuff shells and each has a central hole for receiving a speaker therein. The speaker mounting plates are provided at a rear surface with wall portions of predetermined heights. The wall portions on one of the speaker mounting plates are formed from outer bottom surfaces of two battery compartments formed on a front surface of the speaker mounting plate at two sides of the central hole. With the speaker mounting plates, batteries and speakers may be quickly assembled to form the earmuffs or disassembled for replacement. The wall portions on each speaker mounting plate cooperates with a foam located behind the speaker to define a space functioning like a cabinet, creating clear and high quality stereo sounds output from the speakers.

Claims

1. An earmuff structure for headset or ear protector, comprising:

two earmuff shells being provided at respective inner surface with forward projected and internally threaded seats;

a circuit board mounted in each of said earmuff shells and having bores provided thereon to correspond to said internally threaded seats on inner surfaces of each said earmuff shell; and

first and second speaker mounting plates separately assembled to said two earmuff shells, and having internally threaded bars formed thereon corresponding to said internally threaded seats on inner surfaces of said two earmuff shells.

2. The earmuff structure for headset or ear protector as claimed in claim 1, wherein said first and second speaker mounting plates are provided at respective central area with a central hole for receiving a speaker therein.

3. The earmuff structure for headset or ear protector as claimed in claim 1, wherein said first and second speaker mounting plates are provided at respective rear surface with wall portions having predetermined heights.

4. The earmuff structure for headset or ear protector as claimed in claim 1, wherein said first speaker mounting plate is provided at a front surface with two battery compartments located at two outer sides of said central hole.

5. The earmuff structure for headset or ear protector as claimed in claim 4, wherein said two battery compartments formed on said first speaker mounting plate have outer bottom surfaces that rearward project to form wall portions of predetermined heights on a rear surface of said first speaker mounting plate.

6. The earmuff structure for headset or ear protector as claimed in claim 4, wherein said two battery compartments formed on said first speaker mounting plate have battery conducting electrode plates pre-mounted therein;

and said battery conducting electrode plates being electrically connected to said circuit boards by plugging terminals on conductors into corresponding sockets on said circuit boards.

7. The earmuff structure for headset or ear protector as claimed in claim 2, wherein said speakers received in said central holes on said first and second speaker mounting plates are electrically connected to said circuit boards by plugging terminals on conductors into corresponding sockets on said circuit boards.