# US 10,501,044 B2 · Curtain airbag apparatus > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,501,044 B2 - Document ID: US10501044B2 - Status: Granted - Kind: B2 - Application number: 15/838,174 - Filed: 2017-12-11 - Published: 2018-06-14 - Granted: 2019-12-10 - Earliest claimed: 2016-12-12 - Assignees: Hyundai Mobis Co., Ltd. - Applicants: Hyundai Mobis Co., Ltd. - Inventors: Geon Woong Moon - Web page: https://patentgrep.com/patent/US10501044B2 ## CPC - B60R 21/232: Curtain-type airbags deploying mainly in a vertical direction from their top edge - B60R 21/214: in roof panels - B60R 21/231: characterised by their shape, construction or spatial configuration - B60R 21/23138: {specially adapted for side protection (B60R21/23184, B60R21/232 take precedence)} - 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 2021/0009: {Oblique collision} - B60R 2021/0048: {Head} - B60R 2021/23107: {the bag being integrated in a multi-bag system} - B60R 2021/23316: {Inner seams, e.g. creating separate compartments or used as tethering means} - B60R: VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR ## Abstract A curtain airbag apparatus may include: a curtain airbag cushion installed on an inner side surface of a vehicle including a first chamber configured to be inflated and deployed from a collapsed position as gas is injected therein from an inflator into an expanded position covering the inner side surface of the vehicle; and a first restraint part disposed toward a side of a driver airbag cushion to limit expansion of the curtain airbag cushion and form a restraint recess in the curtain airbag cushion to allow the driver airbag cushion to be fitted into the restraint recess such that the first chamber supports the driver airbag cushion in the expanded position. ## Claims ### Claim 1 A curtain airbag apparatus comprising: a curtain airbag cushion installed on an inner side surface of a vehicle including a first chamber configured to be inflated and deployed from a collapsed position as gas is injected therein from an inflator into an expanded position covering the inner side surface of the vehicle; and a first restraint part disposed toward a side of a driver airbag cushion to limit expansion of the curtain airbag cushion and form a restraint recess in the curtain airbag cushion to allow the driver airbag cushion to be fitted into the restraint recess such that the first chamber supports the driver airbag cushion in the expanded position; wherein the curtain air bag cushion has a height H upon complete deployment to the expanded position and the shortest distance between an upper end of the first restraint part and an upper joined portion of the curtain airbag cushion is within a range of about H/4 to about H/2. ### Claim 2 (depends on 1) The curtain airbag apparatus according to claim 1, wherein the first restraint part is configured to form the restraint recess in the curtain airbag cushion by preventing inflation in a thickness direction when inflating the curtain airbag cushion into its expanded position. ### Claim 3 (depends on 2) The curtain airbag apparatus according to claim 2, wherein the curtain airbag cushion further includes a second chamber partitioned from the first chamber part by the first restraint part and configured to be inflated and deployed when inflating the curtain airbag cushion into its expanded position. ### Claim 4 (depends on 3) The curtain airbag apparatus according to claim 3, wherein the curtain airbag cushion further includes a second restraint part configured to limit an inflation thickness of the second chamber. ### Claim 5 (depends on 4) The curtain airbag apparatus according to claim 4, wherein the second restraint part comprises a second seaming part. ### Claim 6 (depends on 4) The curtain airbag apparatus according to claim 4, wherein the second chamber part is configured to absorb shock of from a head of an occupant upon a side oblique collision of the vehicle. ### Claim 7 (depends on 3) The curtain airbag apparatus according to claim 3, wherein the first chamber is disposed at one side of the first restraint part and the second chamber is disposed at another side of the first restraint part. ### Claim 8 (depends on 2) The curtain airbag apparatus according to claim 2, wherein the shortest distance between a lower end of the first restraint part and a lower joined portion of the curtain airbag cushion is within a range of about H/6 to about H/5. ### Claim 9 (depends on 8) The curtain airbag apparatus according to claim 8, wherein the driver airbag cushion has an inflation thickness V and the shortest distance between the lower end of the first restraint part and a front joined portion of the curtain airbag cushion is within a range of about V to about 1.4V. ### Claim 10 (depends on 8) The curtain airbag apparatus according to claim 8, wherein a third restraint part is configured to limit an inflation thickness of the curtain airbag cushion is disposed below a B pillar, and wherein the distance in a front-rear direction between the first restraint part and the third restraint part is L, the curtain airbag cushion further includes a second restraint part configured to limit an inflation thickness of the second chamber, the second restraint part is disposed at a position that is separated from the third restraint part by about L/4 to about L/2. ### Claim 11 (depends on 10) The curtain airbag apparatus according to claim 10, wherein the second restraint part is disposed at a position that is separated forward by L/3 from the third seaming part. ### Claim 12 (depends on 10) The curtain airbag apparatus according to claim 10, wherein a fourth restraint part is configured to limit an inflation thickness of the curtain airbag cushion in front of the second restraint part, and wherein the fourth restraint part is disposed at a position that is separated from the second restraint part by about L/4 to about L/2. ### Claim 13 (depends on 10) The curtain airbag apparatus according to claim 10, wherein the third restraint part comprises a third seaming part. ### Claim 14 (depends on 12) The curtain airbag apparatus according to claim 12, wherein the fourth restraint part is disposed at a position that is separated from the second restraint part by about L/3. ### Claim 15 (depends on 12) The curtain airbag apparatus according to claim 12, wherein the fourth restraint part comprises a fourth seaming part. ### Claim 16 (depends on 1) The curtain airbag apparatus according to claim 1, wherein the first restraint part comprises a first seaming part.