# US 2023/0056934 A1 · Roof airbag apparatus for mobility > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2023/0056934 A1 - Document ID: US20230056934A1 - Status: Published application - Kind: A1 - Application number: 17/879,861 - Filed: 2022-08-03 - Published: 2023-02-23 - Earliest claimed: 2021-08-17 - Assignees: Hyundai Mobis Co., Ltd. - Applicants: Hyundai Mobis Co., Ltd. - Inventors: Byung Ho MIN - Web page: https://patentgrep.com/patent/US20230056934A1 ## CPC - B60R 21/213: in vehicle roof frames or pillars - B60R 21/214: in roof panels - B60R 21/231: characterised by their shape, construction or spatial configuration - B60R 21/233: comprising a plurality of individual compartments; comprising two or more bag-like members, one within the other (B60R21/232 takes precedence) - B60R 21/2338: Tethers - B60R 2021/23107: {the bag being integrated in a multi-bag system} - B60R 2021/23161: {specially adapted for protecting at least two passengers, e.g. preventing them from hitting each other} - B60R 2021/23386: {External tether means} - B60R: VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR ## Abstract The present disclosure describes a roof airbag apparatus for mobility which protects the occupant seated in the cabin in such a manner that the roof airbag is deployed downward from the cabin roof, and safely protects the occupant from impact in such a manner that the occupant is securely restrained by the airbag as the deployment shape of the airbag is maintained. ## Claims ### Claim 1 A roof airbag for mobility, comprising: a first cushion coupled to a first portion of a cabin roof of a vehicle and configured to deploy downwardly from the cabin roof when inflated; a second cushion coupled to a second portion of the cabin roof spaced apart from the first portion of the cabin roof and configured to deploy downwardly from the cabin roof when inflated; and a third cushion coupled to and extending between the first and second cushions and configured to maintain a deployment shape of the first and second cushions when the roof airbag is inflated. ### Claim 2 (depends on 1) The roof airbag of claim 1, wherein the third cushion, when inflated, is greater in length than a distance between the first and second portions of the cabin roof. ### Claim 3 (depends on 1) The roof airbag of claim 1, wherein the third cushion is connected to lower ends of the first and second cushions. ### Claim 4 (depends on 1) The roof airbag of claim 1, further comprising a deflection guide positioned at a first connection area between the first and third cushions and a second connection area between the second and third cushions. ### Claim 5 (depends on 1) The roof airbag of claim 1, further comprising: a first tether having a first end connected to the cabin roof and a second end connected to a first portion of the third cushion positioned closer to the first cushion than to the second cushion; and a second tether having a first end connected to the cabin roof and a second end connected to a second portion of the third cushion positioned closer to the second cushion than to the first cushion. ### Claim 6 (depends on 5) The roof airbag of claim 5, further comprising a third tether having a first end connected to the cabin roof and a second end connected to a third portion of the third cushion positioned between the first and second portions of the third cushion. ### Claim 7 (depends on 5) The roof airbag of claim 5, further comprising: a first hug tether coupled to a third portion of the cabin roof spaced apart from the first portion of the cabin roof and configured to at least partially cover an inner side of the first cushion; and a second hug tether coupled to a fourth portion of the cabin roof spaced apart from the second portion of the cabin roof and configured to at least partially cover an inner side of the second cushion. ### Claim 8 (depends on 7) The roof airbag of claim 7, wherein: the first hug tether is coupled to the inner side of the first tether, and the second hug tether is coupled to the inner side of the second tether. ### Claim 9 (depends on 8) The roof airbag of claim 8, wherein: the first hug tether has both ends coupled to the cabin roof and becomes gradually wider as extending away from the both ends of the first hug tether, and the second hug tether has both ends coupled to the cabin roof and becomes gradually wider as extending away from the both ends of the second hug tether. ### Claim 10 (depends on 1) The roof airbag of claim 1, further comprising: a first diaphragm cushion configured, when deployed, to cover an outer side of the first cushion; and a second diaphragm cushion configured, when deployed, to cover an outer side of the second cushion. ### Claim 11 (depends on 10) The roof airbag of claim 10, wherein the first and second diaphragm cushions include: a fill chamber extending along a rim of the first and second diaphragm cushions and being filled with a gas; and a no-fill zone positioned at a center portion of the first and second diaphragm cushions and not being filled with the gas. ### Claim 12 (depends on 10) The roof airbag of claim 10, further comprising: a first diaphragm tether having a first end coupled to the cabin roof and a second end coupled to a lower end of the first diaphragm cushion; and a second diaphragm tether having a first end coupled to the cabin roof and a second end coupled to a lower end of the second diaphragm cushion. ### Claim 13 (depends on 12) The roof airbag of claim 12, wherein: the first diaphragm tether has (1) a first end connected to a third portion of the cabin roof near the second portion of the cabin roof and (2) a second end connected to the lower end of the first diaphragm cushion, and extends across the first and second cushions, the second diaphragm tether has (1) a first end connected to a fourth portion of the cabin roof near the first portion of the cabin roof and (2) a second end connected to the lower end of the second diaphragm cushion, and extends across the first and second cushions, and the first and second diaphragm tethers cross each other. ### Claim 14 (depends on 1) The roof airbag of claim 1, wherein the first and second cushions include: an outer cushion portion extending along a rim of the first and second cushions and configured to be inflated; and a non-inflatable portion configured to function as an inner surface of the first and second cushions. ### Claim 15 (depends on 14) The roof airbag of claim 14, wherein the third cushion includes: an outer cushion portion extending along a rim of the third cushion and connected to the outer cushion portions of the first and second cushions; and a non-inflatable portion surrounded by the outer cushion portion of the third cushion and configured to function as an inner surface of the third cushion. ### Claim 16 (depends on 15) The roof airbag of claim 15, wherein: the third cushion includes a center cushion portion laterally extending across the non-inflatable portion of the third cushion, and the non-inflatable portion of the third cushion is divided into first and second non-inflatable zones by the center cushion portion positioned therebetween.