# US 12,015,888 B2 · Acoustic device and vibration damping method > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,015,888 B2 - Document ID: US12015888B2 - Status: Granted - Kind: B2 - Application number: 17/577,727 - Filed: 2022-01-18 - Published: 2022-05-05 - Granted: 2024-06-18 - Earliest claimed: 2019-07-19 - Assignees: Yamaha Corporation - Applicants: Yamaha Corporation - Inventors: Katsuya Uchida; Akira Miki - Web page: https://patentgrep.com/patent/US12015888B2 ## CPC - H04R 1/026: {Supports for loudspeaker casings} - H04R 1/2896: {for loudspeaker transducers} - H04R 9/046: {Construction} - H04R 2499/13: Acoustic transducers and sound field adaptation in vehicles - 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 acoustic device includes a speaker unit, a support body, and a vibration damping member. The support body has lower mobility than a member on which the speaker unit is mounted. The vibration damping member is provided between the speaker unit and the support body or between the member on which the speaker unit is mounted and the support body. ## Claims ### Claim 1 An acoustic device, comprising: a speaker unit; a support body with lower mobility than a member on which the speaker unit is mounted; and a vibration damping member provided between the speaker unit and the support body or between the member on which the speaker unit is mounted and the support body, wherein a flange of the speaker unit is in contact with a surface of the member on which the speaker unit is mounted, and the vibration damping member is provided at a position at which the vibration damping member overlaps the flange when viewed from a sound emitting direction of the speaker unit. ### Claim 2 (depends on 1) The acoustic device according to claim 1, wherein the vibration damping member is provided at a vibration damping target area in the member on which the speaker unit is mounted, mobility of the vibration damping target area being higher than the support body. ### Claim 3 (depends on 1) The acoustic device according to claim 1, wherein a degree of mobility in a vibration body as the support body or the member on which the speaker unit is mounted indicates a degree of easiness of vibration in the vibration body based on driving of the speaker unit, and the degree of easiness of vibration at an area on which the vibration damping member is mounted in the support body is lower than the degree of easiness of vibration at an area on which the vibration damping member is mounted in the member on which the speaker unit is mounted. ### Claim 4 (depends on 1) The acoustic device according to claim 1, wherein the vibration damping member is a bar-shaped member, a first end of which is fixed to the member on which the speaker is mounted, and a second end of which is fixed to the support body. ### Claim 5 (depends on 1) The acoustic device according to claim 1, further comprising a plurality of vibration damping members provided at the speaker unit or the member on which the speaker unit is mounted. ### Claim 6 (depends on 1) The acoustic device according to claim 1, wherein the support body has higher rigidity than the member on which the speaker unit is mounted. ### Claim 7 (depends on 1) The acoustic device according to claim 1, wherein the vibration damping member includes a first member, a second member, and a third member, the first member and the second member are connected to each other through the third member, and the third member has a lower elastic modulus than the first member and the second member. ### Claim 8 (depends on 7) The acoustic device according to claim 7, wherein the third member is shear-deformed by a force applied through the first member and the second member. ### Claim 9 (depends on 1) The acoustic device according to claim 1, wherein the support body is a member provided inside a vehicle. ### Claim 10 (depends on 1) The acoustic device according to claim 1, wherein the member on which the speaker unit is mounted is a rear tray. ### Claim 11 (depends on 1) The acoustic device according to claim 1, wherein the member on which the speaker unit is mounted includes a first surface with which the flange of the speaker unit is in contact and a second surface which is a back side of the first surface, and the support body includes a first attached portion and a second attached portion each extending in a first direction and respectively attached to the second surface of the member on which the speaker unit is mounted at positions where the speaker unit is interposed between the first attached portion and the second attached portion in a second direction orthogonal to the first direction. ### Claim 12 (depends on 11) The acoustic device according to claim 11, wherein the first attached portion and the second attached portion of the support body are respectively attached to the second surface of the member on which the speaker unit is mounted such that the first attached portion and the second attached portion do not overlap the flange when viewed from the sound emitting direction of the speaker unit. ### Claim 13 (depends on 1) The acoustic device according to claim 1, wherein the member on which the speaker unit is mounted includes a first surface with which the flange of the speaker unit is in contact and a second surface which is a back side of the first surface, and the vibration damping member is disposed between the second surface of the member on which the speaker unit is mounted and the support body. ### Claim 14 (depends on 13) The acoustic device according to claim 13, wherein the vibration damping member is in contact with the second surface of the member on which the speaker unit is mounted.