# US 2020/0288249 A1 · Speaker module and method for manufacturing same > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2020/0288249 A1 - Document ID: US20200288249A1 - Status: Published application - Kind: A1 - Application number: 16/727,967 - Filed: 2019-12-27 - Published: 2020-09-10 - Earliest claimed: 2019-03-05 - Assignees: AAC Technologies Pte. Ltd. - Applicants: AAC Technologies Pte. Ltd. - Inventors: Yi Shao; Fan Zhang - Web page: https://patentgrep.com/patent/US20200288249A1 ## CPC - H04R 9/06: Loudspeakers - H04R 7/127: {dome-shaped} - H04R 7/18: at the periphery - H04R 9/025: {Magnetic circuit} - H04R 31/006: {Interconnection of transducer parts (of diaphragm and outer suspension by moulding H04R31/003)} - H04R 2231/001: Moulding aspects of diaphragm or surround - H04R 2400/11: Aspects regarding the frame of loudspeaker 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 A speaker module and a manufacturing method thereof is provided in present invention. The speaker module includes a frame, a magnetic circuit system and a vibration system. The vibration system has a vibrating diaphragm and a voice coil. The magnetic circuit system includes a magnet and an upper magnetic plate arranged on the magnet. The speaker module further includes flexible circuit boards electrically connected with the voice coil. The upper magnetic plate and the flexible circuit boards are integrally injection molded in the frame. By virtue of the configuration described in the present invention, the connection between the frame and the magnetic circuit system is precise and stable. ## Claims ### Claim 1 A speaker module comprising: a frame having an accommodation space enclosed by a side wall; a magnetic circuit system accommodated in the frame, including a magnet and an upper magnetic plate attached on the magnet; a vibration system accommodated in the frame, including a vibrating diaphragm and a voice coil for driving the vibrating diaphragm; and at least one flexible circuit board electrically connected with the voice coil; wherein the upper magnetic plate and the flexible circuit board are integrally injection molded in the frame. ### Claim 2 (depends on 1) The speaker module as described in claim 1 comprising two flexible circuit boards disposed on both sides of the voice coil. ### Claim 3 (depends on 1) The speaker module as described in claim 1, wherein the flexible circuit board comprises an inner ring connected to the voice coil, an outer ring integrally injection-molded with the frame, and a connection ring connecting the inner ring and the outer ring; the inner ring is fixedly connected to the voice coil. ### Claim 4 (depends on 1) The speaker module as described in claim 1, wherein the side wall comprises an upper surface close to the vibrating diaphragm, a lower surface far from the vibrating diaphragm, and an inner edge and an outer edge connecting the upper surface and the lower surface; the flexible circuit boards and the upper magnetic plate are arranged on a lower surface of the side wall. ### Claim 5 (depends on 1) The speaker module as described in claim 1, wherein the frame is a long strip shaped structure, the upper magnetic plate is disposed along two edges of the frame parallel to a long axis of the frame, the flexible circuit board is disposed along two edges of the frame parallel to a short axis of the frame. ### Claim 6 (depends on 4) The speaker module as described in claim 4, wherein the upper magnetic plate comprises a main body and a bending part bending and extending from both sides of the main body; the bending part extends and is integrally injection molded into the frame. ### Claim 7 (depends on 5) The speaker module as described in claim 5, wherein the vibrating diaphragm comprises a centrally positioned dome and a suspension surrounding the dome; the speaker module further includes a second vibrating diaphragm denting in a direction away from the vibrating diaphragm and attached to the flexible circuit board on a side away from the vibrating diaphragm. ### Claim 8 (depends on 1) A method for manufacturing the speaker module as described in claim 1, comprising steps of: Step S1: providing a frame injection module, a pair of first molding materials and a pair of second molding materials; wherein the first molding material comprises an upper magnetic plate and a first injection gear connected to the upper magnetic plate; the second molding material comprises at least one flexible circuit board and a second injection gear connected to the flexible circuit boards; Step S2: positioning the first molding material and the second molding material into the frame injection module respectively; wherein the frame injection module includes a positioning pillar; the first injection gear and the second injection gear include positioning holes cooperating with the guiding pillar; for precisely positioning the first molding material and the second molding material with the frame injection module; Step S3: closing the frame injection module and injecting plastic material into the module for molding; Step S4: opening the module and taking out a semi-finished frame, cutting off the first injection gear and the second injection gear for obtaining a finished frame; Step S5: assembling a vibration system and a magnetic circuit system with the frame for obtaining the speaker module.