# US 12,225,363 B2 · Speaker module and wearable device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,225,363 B2 - Document ID: US12225363B2 - Status: Granted - Kind: B2 - Application number: 18/185,403 - Filed: 2023-03-17 - Published: 2023-12-14 - Granted: 2025-02-11 - Earliest claimed: 2022-06-13 - Assignees: HTC Corporation - Applicants: HTC Corporation - Inventors: Sung Jen Wang; Chien-Hung Lin - Web page: https://patentgrep.com/patent/US12225363B2 ## CPC - H04R 1/345: {for loudspeakers} - H04R 5/02: Spatial or constructional arrangements of loudspeakers - H04R 1/025: {Arrangements for fixing loudspeaker transducers, e.g. in a box, furniture} - H04R 1/403: {loud-speakers} - H04R 1/347: {for obtaining a phase-shift between the front and back acoustic wave} - H04R 5/0335: {Earpiece support, e.g. headbands or neckrests (for monophonic headphones H04R1/105)} - 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 A speaker module is adapted to be configured to a wearable device. The speaker module includes an enclosure and a driving unit. The driving unit is used to generate sound. The enclosure contains the driving unit. A sound sum of the sound output from a front opening, a first rear opening and a second rear opening of the enclosure has directivity. The connection vectors and the inverse vector of the connection normal vector defined by these openings are added to form a combined vector. A unit vector of the combination vector and a unit vector of a front normal vector facing outwards of the front opening are added to form a sum vector. The direction of the sum vector is the direction of the sound sum. ## Claims ### Claim 1 A speaker module, adapted to be configured to a wearable device, the speaker module comprising: a driving unit, used to generate sound; and an enclosure, contains the driving unit, and has a front opening, a first rear opening and a second rear opening, wherein a sound sum of the sound output from the front opening, the first rear opening and the second rear opening has directivity, the front opening and the first rear opening form a first vector towards the front opening, the front opening and the second rear opening form a second vector towards the front opening, the first rear opening and the second rear opening form a connection normal vector perpendicular to a connection of the first rear opening and the second rear opening and away from the front opening, an inverse vector of the connection normal vector, the first vector and the second vector are added to form a combination vector, the front opening has a front normal vector towards the outside of the enclosure, an unit vector of the combination vector and an unit vector of the front normal vector are added to form a sum vector, and a direction of the sum vector is a direction of the sound sum. ### Claim 2 (depends on 1) The speaker module according to claim 1, wherein a centroid of the front opening and a centroid of the first rear opening form the first vector towards the centroid of the front opening, the centroid of the front opening and a centroid of the second rear opening form the second vector towards the centroid of the front opening, the centroid of the first rear opening and the centroid of the second rear opening form the connection normal vector perpendicular to a connection of the centroid of the first rear opening and the centroid of the second rear opening and away from the front opening, and the centroid of the front opening has the front normal vector towards the outside of the enclosure. ### Claim 3 (depends on 2) The speaker module according to claim 2, wherein the centroid of the first rear opening has a first rear normal vector towards the outside of the enclosure, the centroid of the second rear opening has a second rear normal vector towards the outside of the enclosure, and the connection normal vector is the sum of the first rear normal vector and the second rear normal vector. ### Claim 4 (depends on 1) The speaker module according to claim 1, wherein the sum vector formed according to any point of the front opening, any point of the first rear opening, and any point of the second rear opening defines an effective area in the front opening. ### Claim 5 (depends on 1) The speaker module according to claim 1, wherein an extension direction of the front opening is inclined to an extension direction of the first rear opening and an extension direction of the second rear opening. ### Claim 6 (depends on 1) The speaker module according to claim 1, wherein the front opening extends arcuately, and the first rear opening and the second rear opening extend linearly. ### Claim 7 A wearable device, comprising: a frame; and at least one speaker module, configured to the frame, the at least one speaker module comprises: a driving unit, used to generate sound; and an enclosure, contains the driving unit, and has a front opening, a first rear opening and a second rear opening, wherein a sound sum of the sound output from the front opening, the first rear opening and the second rear opening has directivity, the front opening and the first rear opening form a first vector towards the front opening, the front opening and the second rear opening form a second vector towards the front opening, the first rear opening and the second rear opening form a connection normal vector perpendicular to a connection of the first rear opening and the second rear opening and away from the front opening, an inverse vector of the connection normal vector, the first vector and the second vector are added to form a combination vector, the front opening has a front normal vector towards the outside of the enclosure, an unit vector of the combination vector and an unit vector of the front normal vector are added to form a sum vector, and a direction of the sum vector is a direction of the sound sum. ### Claim 8 (depends on 7) The wearable device according to claim 7, wherein a centroid of the front opening and a centroid of the first rear opening form the first vector towards the centroid of the front opening, the centroid of the front opening and a centroid of the second rear opening form the second vector towards the centroid of the front opening, the centroid of the first rear opening and the centroid of the second rear opening form the connection normal vector perpendicular to a connection of the centroid of the first rear opening and the centroid of the second rear opening and away from the front opening, and the centroid of the front opening has the front normal vector towards the outside of the enclosure. ### Claim 9 (depends on 8) The wearable device according to claim 8, wherein the centroid of the first rear opening has a first rear normal vector towards the outside of the enclosure, the centroid of the second rear opening has a second rear normal vector towards the outside of the enclosure, and the connection normal vector is the sum of the first rear normal vector and the second rear normal vector. ### Claim 10 (depends on 7) The wearable device according to claim 7, wherein the sum vector formed according to any point of the front opening, any point of the first rear opening, and any point of the second rear opening defines an effective area in the front opening. ### Claim 11 (depends on 7) The wearable device according to claim 7, wherein an extension direction of the front opening is inclined to an extension direction of the first rear opening and an extension direction of the second rear opening. ### Claim 12 (depends on 7) The wearable device according to claim 7, wherein the front opening extends arcuately, and the first rear opening and the second rear opening extend linearly. ### Claim 13 (depends on 7) The wearable device according to claim 7, further comprises: a display unit, configured to the frame. ### Claim 14 (depends on 7) The wearable device according to claim 7, wherein the number of the at least one speaker module is two, the speaker modules are arranged on the left and right sides of the frame, when the sound from the speaker module on the left side is transmitted to the right side, the sound will be canceled by the speaker module on the right side, and when the sound from the speaker module on the right side is transmitted to the left side, the sound will be canceled by the speaker module on the left side.