# US 12,192,725 B2 · Vehicular speaker > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,192,725 B2 - Document ID: US12192725B2 - Status: Granted - Kind: B2 - Application number: 17/795,879 - Filed: 2021-01-29 - Published: 2023-03-02 - Granted: 2025-01-07 - Earliest claimed: 2020-01-30 - Assignees: Foster Electric Company, Limited - Applicants: Foster Electric Company, Limited - Inventors: Takayuki Tabata - Web page: https://patentgrep.com/patent/US12192725B2 ## CPC - H04R 9/025: {Magnetic circuit} - H04R 9/066: {using the principle of inertia} - B60R 11/0217: {for loud-speakers} - H04R 7/045: {using the distributed mode principle, i.e. whereby the acoustic radiation is emanated from uniformly distributed free bending wave vibration induced in a stiff panel and not from pistonic motion} - H04R 2440/05: Aspects relating to the positioning and way or means of mounting of exciters to resonant bending wave panels - 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) - B60R: VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR ## Abstract Speakers for vehicles which can output sound with identical characteristic regardless of shape and dimension of entire components of interiors and exteriors of the speakers and which can be manufactured by small number of components and processes are provided. A speaker for vehicles of the present disclosure includes a vibration component having a plate shape. A vibration surface is formed on a part of the vibration component. A non-vibration surface is formed on a part of the vibration component. A dividing portion divides the vibration surface and the non-vibration surface. A voice coil is fixed on the vibration surface. A holding component is fixed on the non-vibration surface. A magnetic circuit is fixed on the holding component and corresponds to the voice coil. ## Claims ### Claim 1 A speaker for vehicles comprising: a vibration component having a plate shape; a vibration surface formed on a part of the vibration component; a non-vibration surface formed on a part of the vibration component so as to surround the vibration surface on a same plane of the vibration surface; a dividing portion having a rib shape formed between the vibration surface and the non-vibration surface so as to surround the vibration surface and that divides the vibration surface and the non-vibration surface; a voice coil fixed on the vibration surface; a holding component fixed on the non-vibration surface; and a magnetic circuit fixed on the holding component and corresponding to the voice coil. ### Claim 2 (depends on 1) The speaker for vehicles according to claim 1, wherein the non-vibration surface is thicker than the vibration surface. ### Claim 3 (depends on 1) The speaker for vehicles according to claim 1, wherein the holding component and the vibration component are separate components and are fixed to each other by an engaging component. ### Claim 4 (depends on 3) The speaker for vehicles according to claim 3, wherein a positioning component is provided to the holding component and the vibration component. ### Claim 5 (depends on 1) The speaker for vehicles according to claim 1, wherein the dividing portion has a rib shape that surrounds the vibration surface. ### Claim 6 (depends on 1) The speaker for vehicles according to claim 1, wherein the dividing portion has a recess shape that surrounds the vibration surface. ### Claim 7 (depends on 1) The speaker for vehicles according to claim 1, wherein: the voice coil includes a coil bobbin, a voice coil mounting portion having a cylindrical shape is provided on the vibration surface, the coil bobbin is mounted on the voice coil mounting portion, and the voice coil is fixed to the vibration surface via the coil bobbin. ### Claim 8 (depends on 7) The speaker for vehicles according to claim 7, wherein a vibration controller is provided on the vibration surface to control vibration thereof. ### Claim 9 (depends on 8) The speaker for vehicles according to claim 8, wherein the vibration controller is connected to the voice coil mounting portion. ### Claim 10 (depends on 8) The speaker for vehicles according to claim 8, wherein in the vibration controller, height of the voice coil mounting portion is higher than height of the dividing portion. ### Claim 11 (depends on 8) The speaker for vehicles according to claim 8, wherein the vibration controller is formed by a plurality of frame portions having cylindrical shapes or polygonal shapes with various sizes, or a linear rib portion, or combinations thereof. ### Claim 12 (depends on 11) The speaker for vehicles according to claim 11, wherein the linear rib portion connects the voice coil mounting portion and the frame portions. ### Claim 13 (depends on 1) The speaker for vehicles according to claim 1, wherein the voice coil and the vibration surface are fixed via a cap mounted on the voice coil. ### Claim 14 (depends on 2) The speaker for vehicles according to claim 2, wherein the holding component and the vibration component are separate components and are fixed to each other by an engaging component. ### Claim 15 (depends on 2) The speaker for vehicles according to claim 2, wherein the dividing portion has a rib shape that surrounds the vibration surface. ### Claim 16 (depends on 2) The speaker for vehicles according to claim 2, wherein the dividing portion has a recess shape that surrounds the vibration surface. ### Claim 17 (depends on 2) The speaker for vehicles according to claim 2, wherein: the voice coil includes a coil bobbin, a voice coil mounting portion having a cylindrical shape is provided on the vibration surface, the coil bobbin is mounted on the voice coil mounting portion, and the voice coil is fixed to the vibration surface via the coil bobbin. ### Claim 18 (depends on 2) The speaker for vehicles according to claim 2, wherein the voice coil and the vibration surface are fixed via a cap mounted on the voice coil.