# US 10,864,816 B2 · Structure for lower portion of vehicle body > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,864,816 B2 - Document ID: US10864816B2 - Status: Granted - Kind: B2 - Application number: 16/099,223 - Filed: 2017-04-24 - Published: 2019-07-11 - Granted: 2020-12-15 - Earliest claimed: 2016-06-24 - Assignees: Honda Motor Co., Ltd. - Applicants: Honda Motor Co., Ltd. - Inventors: Takashi Kato; Masaaki Yamane; Satoru Kawabe; Takenobu Haga; Ken Yasui - Web page: https://patentgrep.com/patent/US10864816B2 ## CPC - B60K 13/04: concerning exhaust - B60K 15/063: Arrangement of tanks - B62D 25/20: Floors or bottom sub-units {(sub-frames for mounting engine or suspensions B62D21/11; drip trays F16N31/006)} - B60K 2015/0631: {the fuel tank forming at least part of the vehicle floor} - B60K: ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES - 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 structure for a lower portion of a vehicle body includes a right side sill (14), a right floor frame (17), a right cross member (68), and a muffler. A fuel tank is provided on an inner side of the right floor frame (17) in a vehicle width direction. The right cross member (68) spans between the right floor frame (17) and the right side sill (14) and extends in the vehicle width direction. Furthermore, the muffler is provided in a region enclosed by the right side sill (14), the right floor frame (17), and the right cross member (68). The right cross member (68) has an upward deformation guiding part (77). The upward deformation guiding part (77) is formed to be able to be deformed upward due to an impact load (F2) input to the right side sill (14). ## Claims ### Claim 1 A structure for a lower portion of the vehicle body, comprising: a floor panel provided below a passenger compartment; a side sill provided on an outer side of the floor panel in a vehicle width direction and configured to extend in a forward/rearward direction of a vehicle body; a floor frame provided inside the side sill in the vehicle width direction and configured to extend in the forward/rearward direction of the vehicle body; an energy source provided inside the floor frame in the vehicle width direction; a cross member configured to span between the floor frame and the side sill and configured to extend in the vehicle width direction; and an in-vehicle component provided in a region which is enclosed by the side sill, the floor frame, and the cross member and is located below the cross member, wherein the cross member has an upward deformation guiding part capable of being deformed upward due to an impact load input to the side sill, and wherein the in-vehicle component is configured such that, when a load is input to the floor frame due to an interference of the in-vehicle component in a state in which the upward deformation guiding part is deformed upward, a downward component force of the load applied to the in-vehicle component is larger than an upward component force thereof. ### Claim 2 (depends on 1) The structure for a lower portion of the vehicle body according to claim 1, wherein the in-vehicle component is a muffler, and the muffler is formed in a substantially elliptical shape and a radius of an upper portion curved surface on the floor frame side is larger than a radius of a lower portion curved surface thereon. ### Claim 3 (depends on 1) The structure for a lower portion of the vehicle body according to claim 1, wherein the in-vehicle component is a canister. ### Claim 4 (depends on 1) The structure for a lower portion of the vehicle body according to claim 1, wherein the side sill, the floor frame, and the cross member are configured such that a value obtained by subtracting a second distance from the upward deformation guiding part to the floor frame from a first distance from the upward deformation guiding part to the side sill is greater than or equal to an amount of displacement of the floor frame upward. ### Claim 5 (depends on 4) The structure for a lower portion of the vehicle body according to claim 4, wherein, in the upward deformation guiding part, a strength of a portion on the in-vehicle component side is lower than that of a portion opposite to the in-vehicle component side in the forward/rearward direction of the vehicle body. ### Claim 6 (depends on 4) The structure for a lower portion of the vehicle body according to claim 4, wherein the in-vehicle component is attached to the side sill. ### Claim 7 (depends on 2) The structure for a lower portion of the vehicle body according to claim 2, wherein the floor frame has: a concave portion formed above an exhaust pipe joined to the muffler and avoiding the exhaust pipe; and a rear frame portion located on a rear side of the concave portion and formed in a constant cross section. ### Claim 8 A structure for a lower portion of the vehicle body, comprising: a floor panel provided below a passenger compartment; a side sill provided on an outer side of the floor panel in a vehicle width direction and configured to extend in a forward/rearward direction of a vehicle body; a floor frame provided inside the side sill in the vehicle width direction and configured to extend in the forward/rearward direction of the vehicle body; an energy source provided inside the floor frame in the vehicle width direction; a cross member configured to span between the floor frame and the side sill and configured to extend in the vehicle width direction; and an in-vehicle component provided which is in a region enclosed by the side sill, the floor frame, and the cross member and is located below the cross member, wherein the cross member has an upward deformation guiding part capable of being deformed upward due to an impact load input to the side sill, and wherein the in-vehicle component is configured such that, when the in-vehicle component is sandwiched between the side sill and the floor frame in a state in which the upward deformation guiding part is deformed upward and a load is input to each of the side sill and the floor frame due to the inference of the in-vehicle component, a downward resultant force of the load applied to the in-vehicle component is greater than an upward resultant force thereof.