# US 2014/0153767 A1 · Earphone > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2014/0153767 A1 - Document ID: US20140153767A1 - Status: Published application - Kind: A1 - Application number: 14/093,741 - Filed: 2013-12-02 - Published: 2014-06-05 - Earliest claimed: 2012-12-03 - Assignees: AAC Technologies Pte. Ltd. - Inventors: Zhigang Hua - Web page: https://patentgrep.com/patent/US20140153767A1 ## CPC - H04R 1/2803: {for loudspeaker transducers} - H04R 1/1075: {Mountings of transducers in earphones or headphones} - H04R 1/1091: {Details not provided for in groups H04R1/1008 - H04R1/1083} - H04R 1/10: Earpieces; Attachments therefor {; Earphones; Monophonic headphones (H04R1/28 takes precedence; stereophonic headphones H04R5/033)} - H04R 2460/13: Hearing devices using bone conduction transducers - H04R: LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS (producing sounds with frequency not determined by supply frequency G10K) ## Abstract An earphone is disclosed. The earphone includes a housing forming a volume, a plurality of sound holes arranged in the housing, a sound generator received in the volume of the housing and cooperatively with the housing forming a front volume, a supporter accommodated in the volume of the housing and engaging with the sound generator forming a main back volume, and cooperatively with the housing forming a auxiliary back volume. The supporter includes bottom, a sidewall upwardly extending from the bottom and an acoustic pipe, the acoustic pipe communicating the main back volume with the auxiliary back volume for balancing an internal acoustic pressure of the earphone. ## Claims ### Claim 1 An earphone, comprising: a housing forming a volume, and a sound hole arranged in the housing; a sound generator received in the volume of the housing and cooperatively with the housing forming a front volume; a supporter accommodated in the volume of the housing and engaging with the sound generator forming a main back volume, and cooperatively with the housing forming an auxiliary back volume; the supporter defining a bottom, a sidewall upwardly extending from the bottom and an acoustic pipe, the acoustic pipe communicating the main back volume with the auxiliary back volume for balancing an internal acoustic pressure of the earphone. ### Claim 2 (depends on 1) The earphone as described in claim 1, wherein the acoustic pipe is located on the bottom of the supporter and far away from the sidewall of the supporter. ### Claim 3 (depends on 2) The earphone as described in claim 2, wherein the supporter further comprises an aperture formed on the center part of the bottom and a second damper covering the corresponding aperture of the bottom for adjusting the frequency range of the earphone. ### Claim 4 (depends on 2) The earphone as described in claim 2, wherein the acoustic pipe is in the shape of a loop ring. ### Claim 5 (depends on 3) The earphone as described in claim 3, wherein the acoustic pipe is in the shape of a loop ring and surrounding the aperture. ### Claim 6 (depends on 4) The earphone as described in claim 4, wherein the length of the acoustic pipe is at least greater than half the length of the loop ring. ### Claim 7 (depends on 5) The earphone as described in claim 5, wherein the length of the acoustic pipe is at least greater than half the length of the loop ring. ### Claim 8 (depends on 6) The earphone as described in claim 6, wherein a first hole of the acoustic pipe is located on the end of the acoustic pipe for communicating with the auxiliary back volume, and a second hole is located on the other end of the acoustic pipe for communicating with the main back volume. ### Claim 9 (depends on 7) The earphone as described in claim 7, wherein a first hole of the acoustic pipe is located on the end of the acoustic pipe for communicating with the auxiliary back volume, and a second hole is located on the other end of the acoustic pipe for communicating with the main back volume. ### Claim 10 An earphone, comprising: a housing defining a cover and a case assembled with the cover, and a sound hole arranged in the housing, the cover having a cavity, the case having a chamber; a sound generator at least partially received in the cavity of the cover and cooperatively with the cover forming a front volume; a supporter accommodated in the chamber of the case and dividing the chamber into two parts, the sound generator partially received in one of the parts and engaging with the supporter for forming a main back volume, and the other part being as a auxiliary back volume; the supporter defining bottom, a sidewall upwardly extending from the bottom and an acoustic pipe, the acoustic pipe communicating the main back volume with the auxiliary back volume for balancing an internal acoustic pressure of the earphone. ### Claim 11 (depends on 10) The earphone as described in claim 10, wherein the acoustic pipe is mounted on the bottom of the supporter and far away from the sidewall of the supporter. ### Claim 12 (depends on 11) The earphone as described in claim 11, wherein the supporter further includes an aperture formed on the center part of the bottom and a second damper covered the corresponding the aperture of the bottom for adjusting the frequency range of the earphone. ### Claim 13 (depends on 11) The earphone as described in claim 11, wherein the acoustic pipe is in the shape of a loop ring. ### Claim 14 (depends on 12) The earphone as described in claim 12, wherein the acoustic pipe is in the shape of a loop ring and rounding the aperture. ### Claim 15 (depends on 13) The earphone as described in claim 13, wherein the length of the acoustic pipe is at least greater than half the length of the loop ring. ### Claim 16 (depends on 14) The earphone as described in claim 14, wherein the length of the acoustic pipe is at least greater than half the length of the loop ring. ### Claim 17 (depends on 15) The earphone as described in claim 15, wherein a first hole of the acoustic pipe is located on the end of the acoustic pipe for communicating with the auxiliary back volume, and a second hole is located on the other end of the acoustic pipe for communicating with the main back volume. ### Claim 18 (depends on 16) The earphone as described in claim 16, wherein a first hole of the acoustic pipe is located on the end of the acoustic pipe for communicating with the auxiliary back volume, and a second hole is located on the other end of the acoustic pipe for communicating with the main back volume.