# US 12,003,919 B2 · Speaker box > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,003,919 B2 - Document ID: US12003919B2 - Status: Granted - Kind: B2 - Application number: 17/876,539 - Filed: 2022-07-29 - Published: 2023-07-06 - Granted: 2024-06-04 - Earliest claimed: 2021-12-31 - Assignees: AAC Microtech (Changzhou) Co., Ltd. - Applicants: AAC Microtech (Changzhou) Co., Ltd. - Inventors: Li Ren; Chaoyuan Li - Web page: https://patentgrep.com/patent/US12003919B2 ## CPC - H04R 1/025: {Arrangements for fixing loudspeaker transducers, e.g. in a box, furniture} - H04R 1/2888: {for loudspeaker transducers} - H04R 1/02: Casings; Cabinets {; Supports therefor;} Mountings therein (H04R1/28 takes precedence {; attachments for microphones H04R1/08; mounting of transducers in earpieces H04R1/1075}) - H04R 1/2873: {for loudspeaker transducers} - H04R 2201/029: Manufacturing aspects of enclosures transducers - 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) ## Abstract Provided is a speaker box, including: an upper cover, an upper steel sheet; a lower cover, a lower steel sheet; a receiving space, an acoustic unit; and an insert plate arranged in the rear cavity. Upper and lower sides of the insert plate abut against the upper steel sheet and the lower steel sheet, respectively, a position of at least one of the upper steel sheet or the lower steel sheet aligned with the insert plate is provided with a fixing groove passing therethrough, and the insert plate is fixed to at least one of the upper steel sheet or the lower steel sheet through glue injection in the fixing groove. The speaker has characteristics of convenient mounting, good anti-shell vibration effect, and reduced mounting space. ## Claims ### Claim 1 A speaker box, comprising: an upper cover comprising an upper cover body, an upper cover port passing through the upper cover body, and an upper steel sheet fixed to the upper cover body and completely covering the upper cover port; a lower cover comprising a lower cover body, a lower cover port passing through the lower cover body, and a lower steel sheet fixed to the lower cover body and completely covering the lower cover port; a receiving space, wherein the upper cover and the lower cover are assembled to form the receiving space; an acoustic unit received in the receiving space and dividing the receiving space into a front sound cavity and a rear cavity; and an insert plate arranged in the rear cavity; wherein upper and lower sides of the insert plate abut against the upper steel sheet and the lower steel sheet, respectively, a position of at least one of the upper steel sheet or the lower steel sheet aligned with the insert plate is provided with a fixing groove passing therethrough, and the insert plate is fixed to at least one of the upper steel sheet or the lower steel sheet through glue injection in the fixing groove. ### Claim 2 (depends on 1) The speaker box as described in claim 1, wherein the fixing groove has a sinking groove structure. ### Claim 3 (depends on 1) The speaker box as described in claim 1, wherein the insert plate divides the rear cavity into a first rear cavity and a second rear cavity, the acoustic unit is located in the first rear cavity, and the second rear cavity is configured to form a virtual sound cavity; and the insert plate is provided with a vent passing therethrough and communicating the first rear cavity with the second rear cavity. ### Claim 4 (depends on 1) The speaker box as described in claim 1, wherein a thickness of the injected glue is less than or equal to a depth of the fixing groove. ### Claim 5 (depends on 1) The speaker box as described in claim 1, wherein the fixing groove comprises a ring-shaped connecting portion formed by recessing and extending from the lower steel sheet toward the upper cover, a support portion formed by extending from the connecting portion to an inner side thereof, and a via passing through the support portion, and the via is arranged corresponding to the insert plate. ### Claim 6 (depends on 5) The speaker box as described in claim 5, wherein the via is formed at a geometric center of the support portion. ### Claim 7 (depends on 6) The speaker box as described in claim 6, wherein a surface of one side of the insert plate close to the fixing groove is recessed in a direction away from the fixing groove to form a limit groove, and an outer peripheral side of the connecting portion engages with the limit groove. ### Claim 8 (depends on 7) The speaker box as described in claim 7, wherein the insert plate comprises a long insert plate parallel to at least one of a major-axis side of the acoustic unit or a short insert plate parallel to a minor-axis side of the acoustic unit, and the limit groove matches at least one of the long insert plate or the short insert plate. ### Claim 9 (depends on 1) The speaker box as described in claim 1, wherein the upper cover further comprises a support wall formed by extending from the upper cover body toward the lower cover, and the acoustic unit is fixedly supported on the support wall. ### Claim 10 (depends on 1) The speaker box as described in claim 1, wherein the upper steel sheet and the upper cover are formed into one piece by injection molding, and the lower steel sheet and the lower cover are formed into one piece by injection molding.