# US 10,870,451 B2 · Vehicle chassis front section structure > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,870,451 B2 - Document ID: US10870451B2 - Status: Granted - Kind: B2 - Application number: 16/319,017 - Filed: 2017-05-23 - Published: 2019-09-12 - Granted: 2020-12-22 - Earliest claimed: 2016-07-21 - Assignees: Honda Motor Co., Ltd. - Applicants: Honda Motor Co., Ltd. - Inventors: Takehiro Kondo; Tomohito Kamada - Web page: https://patentgrep.com/patent/US10870451B2 ## CPC - B62D 21/152: {Front or rear frames} - B62D 21/157: {for side impacts} - B62D 25/08: Front or rear portions {(sub-frames for mounting engine or suspensions B62D21/11)} - 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 lateral-section frame includes a wheel housing upper member, the rear end of which is connected to a front pillar, and a wheel housing lower member extending from the wheel housing upper member via an upper curved section and a lower curved section in a manner such that the front end thereof extends forward and downward to a substantially identical location as does the front end of the front side frame. A stiffener extending forward and rearward to sandwich the upper curved section is attached to the interior of the wheel housing lower member, and the stiffener includes a front rigid section and a rear rigid section attached to a lower surface section and an inside surface section to sandwich an inside ridge therebetween; and a connecting section connecting the front rigid section and the rear rigid section and being attached to at least the inside surface section. ## Claims ### Claim 1 A vehicle chassis front section structure comprising: a lateral-section frame disposed on outside in a vehicle widthwise direction of a front side frame, the lateral-section frame including a wheel housing upper member with a rear end connected to a front pillar, and a wheel housing lower member extending forward and downward from the wheel housing upper member via an upper curved section and a lower curved section of the wheel housing lower member with a front end of the wheel housing lower member located substantially at the same position in terms of a vertical direction and a longitudinal direction as a front end of the front side frame, wherein a reinforcement member extending forward and rearward across the upper curved section is attached to interior of the wheel housing lower member, and the reinforcement member includes a front rigid section and a rear rigid section attached to a lower surface section and a side surface section of the wheel housing lower member across an inside ridge, and a connecting section attached to at least the side surface section and connecting the front rigid section and the rear rigid section to each other, a recess configured to induce a deformation of the upper curved section in case of input of a collision load is formed on the inside ridge at the upper curved section, and the reinforcement member is disposed around the recess. ### Claim 2 (depends on 1) The vehicle chassis front section structure according to claim 1, wherein a dividing wall member for reinforcement is attached to the front rigid section, the dividing wall member configured to divide a closed cross-sectional portion of the wheel housing lower member in a direction of extension of the wheel housing lower member. ### Claim 3 (depends on 2) The vehicle chassis front section structure according to claim 2, wherein a fender support bracket configured to support a front fender of a vehicle chassis is disposed on an upper surface section of the wheel housing lower member above the dividing wall member. ### Claim 4 (depends on 1) The vehicle chassis front section structure according to claim 1, further comprising: a dent formed on an inside ridge of the lower curved section and configured to induce a deformation of the curved section in case of input of a collision load; and an elongated hole formed along the dent in a side surface section of the wheel housing lower member in a penetrating manner. ### Claim 5 (depends on 1) The vehicle chassis front section structure according to claim 1, wherein a front end of the lateral-section frame and the front end of the front side frame are connected to each other by using a gusset, and a front part of the lateral-section frame is bent substantially into a Z-shape while using the upper curved section and the lower curved section as bending points and a front part of the front side frame is bent inward in the vehicle widthwise direction substantially into a V-shape in response to a front collision load.