# US 12,600,411 B2 · Vehicle front part structure > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,600,411 B2 - Document ID: US12600411B2 - Status: Granted - Kind: B2 - Application number: 18/525,877 - Filed: 2023-12-01 - Published: 2024-08-01 - Granted: 2026-04-14 - Earliest claimed: 2023-01-27 - Assignees: Toyota Jidosha Kabushiki Kaisha - Applicants: Toyota Jidosha Kabushiki Kaisha - Inventors: Kosuke Arita - Web page: https://patentgrep.com/patent/US12600411B2 ## CPC - B62D 21/152: {Front or rear frames} - B62D 21/11: with resilient means for suspension {, e.g. of wheels or engine; sub-frames for mounting engine or suspensions} - B62D 25/082: {Engine compartments} - B62D 25/088: {Details of structures as upper supports for springs or dampers} - 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 vehicle front part structure includes a pair of left and right suspension towers, and a pair of left and right front side members disposed at vehicle lower sides of the suspension towers and extending in a vehicle front-rear direction, and is integrally molded by die casting. The front side member has plural compartments arranged internally in the vehicle front-rear direction, and has plural convex parts, protruding outward on progression toward the vehicle rear, at an inner side surface in a vehicle width direction. The plural convex parts provided in the plural compartments are continuously formed in the vehicle front-rear direction so as to discharge fragments from fractures caused by deformation at a time of a collision outward from a cross section. ## Claims ### Claim 1 A vehicle front part structure, comprising: a left and right pair of suspension towers respectively disposed at left and right sides of a vehicle front part; and a left and right pair of front side members disposed at vehicle lower sides of the suspension towers, extending in a vehicle front-rear direction, having a plurality of compartments arranged internally in the vehicle front-rear direction, and having, at an inner side surface in a vehicle width direction, a plurality of convex parts that protrude outward on progression toward a vehicle rear, the plurality of convex parts being provided at the plurality of compartments and being formed continuously in the vehicle front-rear direction so as to discharge fragments from fractures caused by deformation at a time of a collision outward from a cross section, the vehicle front part structure being integrally molded by die casting, and a vertex of each of the convex parts being positioned further toward a rear side than a center of one of the compartments in the vehicle front-rear direction. ### Claim 2 (depends on 1) The vehicle front part structure of claim 1, wherein a start point of each of the convex parts is disposed at a position corresponding to a front face of one of the compartments in the vehicle front-rear direction. ### Claim 3 (depends on 1) The vehicle front part structure of claim 1, wherein an end point of each of the convex parts is disposed at a position corresponding to a rear face of one of the compartments in the vehicle front-rear direction. ### Claim 4 (depends on 1) The vehicle front part structure of claim 1, wherein, in the front side member, among the plurality of compartments, each of the convex parts is provided at each of a plurality of compartments positioned at a vehicle forward side. ### Claim 5 A vehicle front part structure, comprising: a left and right pair of suspension towers respectively disposed at left and right sides of a vehicle front part; and a left and right pair of front side members disposed at vehicle lower sides of the suspension towers, extending in a vehicle front-rear direction, having a plurality of compartments arranged internally in the vehicle front-rear direction, and having, at an inner side surface in a vehicle width direction, a plurality of convex parts that protrude outward on progression toward a vehicle rear, the plurality of convex parts being provided at the plurality of compartments and being formed continuously in the vehicle front-rear direction so as to discharge fragments from fractures caused by deformation at a time of a collision outward from a cross section, the vehicle front part structure being integrally molded by die casting, and a start point of each of the convex parts being disposed at a position corresponding to a front face of one of the compartments in the vehicle front-rear direction. ### Claim 6 (depends on 5) The vehicle front part structure of claim 5, wherein an end point of each of the convex parts is disposed at a position corresponding to a rear face of one of the compartments in the vehicle front-rear direction. ### Claim 7 (depends on 5) The vehicle front part structure of claim 5, wherein, in the front side member, among the plurality of compartments, each of the convex parts is provided at each of a plurality of compartments positioned at a vehicle forward side. ### Claim 8 A vehicle front part structure, comprising: a left and right pair of suspension towers respectively disposed at left and right sides of a vehicle front part; and a left and right pair of front side members disposed at vehicle lower sides of the suspension towers, extending in a vehicle front-rear direction, having a plurality of compartments arranged internally in the vehicle front-rear direction, and having, at an inner side surface in a vehicle width direction, a plurality of convex parts that protrude outward on progression toward a vehicle rear, the plurality of convex parts being provided at the plurality of compartments and being formed continuously in the vehicle front-rear direction so as to discharge fragments from fractures caused by deformation at a time of a collision outward from a cross section, the vehicle front part structure being integrally molded by die casting, and an end point of each of the convex parts being disposed at a position corresponding to a rear face of one of the compartments in the vehicle front-rear direction. ### Claim 9 (depends on 8) The vehicle front part structure of claim 8, wherein, in the front side member, among the plurality of compartments, each of the convex parts is provided at each of a plurality of compartments positioned at a vehicle forward side.