# US 11,451,894 B2 · Ear cup structure > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,451,894 B2 - Document ID: US11451894B2 - Status: Granted - Kind: B2 - Application number: 16/742,833 - Filed: 2020-01-14 - Published: 2021-04-01 - Granted: 2022-09-20 - Earliest claimed: 2019-09-26 - Assignees: Merry Electronics(Shenzhen) Co., Ltd. - Applicants: Merry Electronics(Shenzhen) Co., Ltd. - Inventors: Chia-Chung Lin - Web page: https://patentgrep.com/patent/US11451894B2 ## CPC - H04R 1/1008: {Earpieces of the supra-aural or circum-aural type} - H04R 1/1075: {Mountings of transducers in earphones or headphones} - H04R 1/1091: {Details not provided for in groups H04R1/1008 - H04R1/1083} - H04R 1/2811: {for loudspeaker transducers} - H04R 1/345: {for loudspeakers} - H04R 2460/11: Aspects relating to vents, e.g. shape, orientation, acoustic properties in ear tips of hearing devices to prevent occlusion - 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 ear cup structure including an ear cup shell, a cover, a discharge hole, a speaker, and a guide channel is provided. The ear cup shell has at least a first accommodating space and a second accommodating space spaced from each other, and the second accommodating space has a second opening. The cover covers the second opening of the second accommodating space. The discharge hole is formed between the ear cup shell and the cover. The speaker is disposed in the second accommodating space, thereby dividing the second accommodating space into a front chamber and a rear chamber. The guide channel is communicated with a peripheral side of the rear chamber and is disposed between the rear chamber and the discharge hole. An airflow produced by the speaker in the rear chamber flows through the guide channel and is discharged to an external environment from the discharge hole. ## Claims ### Claim 1 An ear cup structure, comprising: an ear cup shell having at least a first accommodating space and a second accommodating space spaced from each other, the second accommodating space having a second opening; a cover covering the second opening of the second accommodating space; a discharge hole formed between the ear cup shell and the cover; a speaker disposed in the second accommodating space, thereby dividing the second accommodating space into a front chamber and a rear chamber, and having a central axis; and a guide channel communicated with a peripheral side of the rear chamber and disposed between the rear chamber and the discharge hole, wherein the guide channel is formed in a radial direction of the speaker, and the discharge hole communicated with the guide channel is formed in the radial direction of the central axis of the speaker, wherein an airflow produced by the speaker in the rear chamber flows through the guide channel and is discharged to an external environment from the discharge hole, and a direction of the airflow flowing to the discharge hole is not parallel to an axial direction of the central axis of the speaker, wherein the ear cup shell comprises a partition shell, the partition shell forms the second accommodating space and a bulging edge portion extending from the second accommodating space toward a peripheral side, and wherein the guide channel is formed by the bulging edge portion of the partition shell and the cover in a spaced configuration. ### Claim 2 (depends on 1) The ear cup structure according to claim 1, wherein the ear cup shell comprises an outer shell, the outer shell is in the form of a basin-shaped shell and is formed with a peripheral side wall, a top wall, and a first opening with respect to the top wall, the peripheral side wall and the top wall together form the first accommodating space, the partition shell has a concave shape in the middle, and the partition shell seals the first opening of the outer shell. ### Claim 3 (depends on 2) The ear cup structure according to claim 2, wherein the bulging edge portion of the partition shell is formed with a plurality of diagonal ribs extending toward the cover. ### Claim 4 (depends on 2) The ear cup structure according to claim 2, wherein an outer edge of the bulging edge portion of the partition shell is formed with a strengthening edge that is bonded to the peripheral side wall of the outer shell. ### Claim 5 (depends on 1) The ear cup structure according to claim 1, wherein the guide channel is formed with a letting groove. ### Claim 6 (depends on 1) The ear cup structure according to claim 1, wherein the guide channel is formed in a radial direction of the speaker. ### Claim 7 (depends on 1) The ear cup structure according to claim 1, wherein the ear cup structure comprises a plurality of support ribs, the plurality of support ribs are formed between the bulging edge portion of the partition shell and the cover and surround the second accommodating space at a plurality of intervals. ### Claim 8 (depends on 1) The ear cup structure according to claim 1, further comprising an ear cup disposed between the cover and the ear cup shell, and the ear cup and a bottom surface of the cover form a sound output channel. ### Claim 9 (depends on 8) The ear cup structure according to claim 8, wherein the cover has a plurality of sound transmission holes, and the sound output channel is communicated with the front chamber through the plurality of sound transmission holes. ### Claim 10 (depends on 1) The ear cup structure according to claim 1, wherein the cover has at least one pressure relief hole communicated with the guide channel. ### Claim 11 (depends on 1) The ear cup structure according to claim 1, wherein a tuning portion is formed between the rear chamber and the guide channel, and the tuning portion comprises a side wall and at least one through hole formed in the side wall.