# US 2021/0276630 A1 · Structural member for vehicle > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2021/0276630 A1 - Document ID: US20210276630A1 - Status: Published application - Kind: A1 - Application number: 17/256,521 - Filed: 2019-07-22 - Published: 2021-09-09 - Earliest claimed: 2018-07-20 - Assignees: Nippon Steel Corporation - Applicants: Nippon Steel Corporation - Inventors: Takahiro AITOH - Web page: https://patentgrep.com/patent/US20210276630A1 ## CPC - B62D 21/152: {Front or rear frames} - B62D 29/005: {preformed metal and synthetic material elements being joined together, e.g. by adhesives} - B62D 25/08: Front or rear portions {(sub-frames for mounting engine or suspensions B62D21/11)} - B62D 21/15: having impact absorbing means, e.g. a frame designed to permanently or temporarily change shape or dimension upon impact with another body (bumpers B60R19/02; shock absorbers in general F16F) - B62D: MOTOR VEHICLES; TRAILERS (steering, or guiding on a desired track, of agricultural machines or implements A01B69/00; wheels, castors, axles, increasing wheel adhesion B60B; vehicle tyres, tyre inflation or tyre changing B60C; connections between vehicles of a train or the like B60D; vehicles for use on rail and road, amphibious or convertible vehicles B60F; suspension arrangements B60G; heating, cooling, ventilating or other air treating devices B60H; windows, windscreens, non-fixed roofs, doors or similar devices, protective coverings for vehicles not in use B60J; propulsion plant arrangements, auxiliary drives, transmissions, controls, instrumentation or dashboards B60K; electric equipment or propulsion of electrically-propelled vehicles B60L; power supply for electrically-propelled vehicles B60M; passenger accommodation not otherwise provided for B60N; adaptations for load transportation or to carry special loads or objects B60P; arrangement of signalling or lighting devices, the mounting or supporting thereof or circuits therefor, for vehicles in general B60Q; vehicles, vehicle fittings or vehicle parts not otherwise provided for B60R; servicing, cleaning, repairing, supporting, lifting, or manoeuvring, not otherwise provided for, B60S; brake arrangements, brake control systems or parts thereof B60T; air-cushion vehicles B60V; motor-cycles, accessories therefor B62J, B62K; testing of vehicles G01M) ## Abstract A structural member for vehicle 1 includes: a hollow member 10 made of metal, the hollow member 10 including cutout forming portions 12 arranged along a member longitudinal direction of the hollow member, the cutout forming portions 12 each having a cutout 13; and reinforcing parts 20 made of FRP, the reinforcing parts 20 bonded to the hollow member 10, the reinforcing parts 20 covering each of the cutouts 13 in each of the cutout forming portions 12, in which a first cutout forming portion 12a having the cutout 13 in the first region R1 and a second cutout forming portion 12b having the cutout 13 in the second region R2 are arranged alternately along the member longitudinal direction of the hollow member 10. ## Claims ### Claim at position 1 1-7. (canceled) ### Claim 8 A structural member for vehicle, comprising: a hollow member made of metal, the hollow member including cutout forming portions arranged along a member longitudinal direction of the hollow member, the cutout forming portions each having a cutout; and reinforcing parts made of FRP, the reinforcing parts bonded to the hollow member, the reinforcing parts covering each of the cutouts in each of the cutout forming portions, wherein when on a coordinate axis with a barycenter of a cross section vertical to the member longitudinal direction of the hollow member set as an origin, a principal axis where a second moment of area is minimum is referred to as a first axis, an axis vertical to the first axis is referred to as a second axis, one region out of two regions of the hollow member, the two regions obtained by dividing the hollow member with the first axis or the second axis as a boundary, is referred to as a first region, and the other region is referred to as a second region, a first cutout forming portion having the cutout in the first region and a second cutout forming portion having the cutout in the second region are arranged alternately along the member longitudinal direction of the hollow member. ### Claim 9 (depends on 8) The structural member for vehicle according to claim 8, wherein the first cutout forming portion that has the cutout in the first region does not have the cutout in the second region, and the second cutout forming portion that has the cutout in the second region does not have the cutout in the first region. ### Claim 10 (depends on 8) The structural member for vehicle according to claim 8, wherein the first cutout forming portion that has the cutout in the first region has the cutout in the second region, and the second cutout forming portion that has the cutout in the second region has the cutout in the first region. ### Claim 11 (depends on 8) The structural member for vehicle according to claim 8, wherein a strength of the reinforcing part arranged in each of the cutout forming portions increases from one end to the other end in the member longitudinal direction of the hollow member. ### Claim 12 (depends on 8) The structural member for vehicle according to claim 8 wherein a fiber direction of the reinforcing part is oriented parallel to the member longitudinal direction of the hollow member. ### Claim 13 (depends on 11) The structural member for vehicle according to claim 11, wherein a fiber direction of the reinforcing part is oriented parallel to the member longitudinal direction of the hollow member. ### Claim 14 (depends on 8) The structural member for vehicle according to claim 8, wherein the FRP are CFRP or GFRP. ### Claim 15 (depends on 11) The structural member for vehicle according to claim 11, wherein the FRP are CFRP or GFRP. ### Claim 16 (depends on 12) The structural member for vehicle according to claim 12, wherein the FRP are CFRP or GFRP. ### Claim 17 (depends on 13) The structural member for vehicle according to claim 13, wherein the FRP are CFRP or GFRP. ### Claim 18 (depends on 8) The structural member for vehicle according to claim 8, wherein a tensile strength of the hollow member is 980 MPa or more. ### Claim 19 (depends on 11) The structural member for vehicle according to claim 11, wherein a tensile strength of the hollow member is 980 MPa or more. ### Claim 20 (depends on 12) The structural member for vehicle according to claim 12, wherein a tensile strength of the hollow member is 980 MPa or more. ### Claim 21 (depends on 13) The structural member for vehicle according to claim 13, wherein a tensile strength of the hollow member is 980 MPa or more. ### Claim 22 (depends on 14) The structural member for vehicle according to claim 14, wherein a tensile strength of the hollow member is 980 MPa or more. ### Claim 23 (depends on 15) The structural member for vehicle according to claim 15, wherein a tensile strength of the hollow member is 980 MPa or more. ### Claim 24 (depends on 16) The structural member for vehicle according to claim 16, wherein a tensile strength of the hollow member is 980 MPa or more. ### Claim 25 (depends on 17) The structural member for vehicle according to claim 17, wherein a tensile strength of the hollow member is 980 MPa or more.