# US 8,150,076 B2 · Sound converter with enclosure > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 8,150,076 B2 - Document ID: US8150076B2 - Status: Granted - Kind: B2 - Application number: 12/513,897 - Filed: 2007-08-21 - Published: 2010-09-30 - Granted: 2012-04-03 - Earliest claimed: 2006-11-18 - Assignees: EM-TECH Co., Ltd. - Inventors: Seung-Kiu Jeong; Cheon-Myeong Kim; Dong-Kyu Lee - Web page: https://patentgrep.com/patent/US8150076B2 ## CPC - H04R 1/2873: {for loudspeaker transducers} - H04M 1/035: {Improving the acoustic characteristics by means of constructional features of the housing, e.g. ribs, walls, resonating chambers or cavities} - H04R 2499/11: Transducers incorporated or for use in hand-held devices, e.g. mobile phones, PDA's, camera's - 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) - H04M: TELEPHONIC COMMUNICATION (circuits for controlling other apparatus via a telephone cable and not involving telephone switching apparatus G08) ## Abstract The present invention discloses a sound converter with an enclosure which utilizes an outer space to expand a resonance space. The sound converter with the enclosure includes a frame being equipped with a magnetic circuit for forming a magnetic field in a predetermined gap, a voice coil at least partially positioned in the gap, a diaphragm adhered to the voice coil and inserted into a diaphragm seating portion of the frame, a protector formed at the upper portion of the diaphragm, and an enclosure case coupled to the frame, for defining the inner space of the enclosure which is the resonance space. A vent is provided at the enclosure case so that the inner space of the enclosure can communicate with the outer space. This configuration can secure a wide resonance space. ## Claims ### Claim 1 A sound converter with an enclosure, wherein the enclosure is installable in an inner space of a mobile communication terminal main body, comprising: a frame being equipped with a magnetic circuit for forming a magnetic field in a predetermined gap; a voice coil at least partially positioned in the gap; a diaphragm adhered to the voice coil and inserted into a diaphragm seating portion of the frame; a protector formed at the upper portion of the diaphragm; and an enclosure case coupled to the frame, for defining an inner space of the enclosure which is a resonance space, wherein a vent is provided at the enclosure case so that the inner space of the enclosure can communicate with the inner space of the mobile communication terminal main body. ### Claim 2 (depends on 1) The sound converter with the enclosure of claim 1, wherein one or more vents are formed. ### Claim 3 (depends on 1) The sound converter with the enclosure of claim 1, wherein an extension member extending from the vent into the inner space of the mobile communication terminal main body by a predetermined length is provided at the vent. ### Claim 4 (depends on 3) The sound converter with the enclosure of claim 3, wherein a plurality of lower extension members extending into the inner space of the mobile communication terminal main body respectively are additionally provided at the extension member. ### Claim 5 (depends on 3) The sound converter with the enclosure of claim 3, wherein the extension member is flexible. ### Claim 6 (depends on 5) The sound converter with the enclosure of claim 5, wherein the flexible extension member contains polypropylene or polyethylene. ### Claim 7 A mobile communication terminal wherein an inner space of the mobile communication terminal is divided into an enclosure accommodating portion and a board accommodating portion, wherein a sound converter with an enclosure is mounted in the enclosure accommodating portion, wherein a PCB with a display and a main board are mounted in the board accommodating portion, and wherein one or more vents are provided at an enclosure case of the enclosure so that the inner space of the enclosure can communicate with the enclosure accommodating portion or the board accommodating portion. ### Claim 8 (depends on 7) The mobile communication terminal of claim 7, wherein the vent faces the board accommodating portion. ### Claim 9 (depends on 7) The mobile communication terminal of claim 7, wherein the vent faces the enclosure accommodating portion. ### Claim 10 (depends on 7) The mobile communication terminal of claim 7, wherein an extension member extending to the enclosure accommodating portion or the board accommodating portion by a predetermined length is provided at the vent. ### Claim 11 (depends on 10) The mobile communication terminal of claim 10, wherein a plurality of lower extension members extending to the board accommodating portion respectively are additionally provided at the extension member. ### Claim 12 (depends on 10) The mobile communication terminal of claim 10, wherein the extension member extends along the side face or the bottom face of the main board. ### Claim 13 (depends on 10) The mobile communication terminal of claim 10, wherein the extension member is flexible. ### Claim 14 (depends on 13) The mobile communication terminal of claim 13, wherein the flexible extension member contains polypropylene or polyethylene. ### Claim 15 (depends on 4) The sound converter with the enclosure of claim 4, wherein the lower extension members are flexible. ### Claim 16 (depends on 15) The sound converter with the enclosure of claim 15, wherein the lower extension members contain polypropylene or polyethylene. ### Claim 17 (depends on 11) The mobile communication terminal of claim 11, wherein the lower extension members extend along a side face or a bottom face of the main board. ### Claim 18 (depends on 11) The mobile communication terminal of claim 11, wherein the lower extension members are flexible. ### Claim 19 (depends on 18) The mobile communication terminal of claim 18, wherein the lower extension members contain polypropylene or polyethylene.