# US 8,783,761 B2 · Chassis with raising box structure to anchor passenger seats > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 8,783,761 B2 - Document ID: US8783761B2 - Status: Granted - Kind: B2 - Application number: 13/811,750 - Filed: 2011-07-12 - Published: 2013-07-11 - Granted: 2014-07-22 - Earliest claimed: 2010-07-23 - Assignees: RENAULT s.a.s. - Applicants: Olivier Bisror; Thomas Mauduit; Pascal Tabuteau - Inventors: Olivier Bisror; Thomas Mauduit; Pascal Tabuteau - Web page: https://patentgrep.com/patent/US8783761B2 ## CPC - B62D 25/20: Floors or bottom sub-units {(sub-frames for mounting engine or suspensions B62D21/11; drip trays F16N31/006)} - B60N 2/012: {The seat support being a part of the vehicle body or chassis} - B60R 22/22: secured to the vehicle floor - B62D 25/2027: {the subunits being rear structures} - 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) - B60N: SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR - B60R: VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR ## Abstract A motor vehicle chassis including a rear central cross member, a hollow beam positioned over the rear central cross member along this rear central cross member, and a floor seat-cushion support part including rear seat fittings, supported at the rear by the hollow beam positioned under the seat-cushion support part. The beam includes a rear raiser including a horizontal plate fixed to the rear central cross member and further includes a blanking sheet fixed to the horizontal plate of the rear raiser and including at least one anchoring reinforcement assembled on the inside of the hollow beam. The reinforcement, which forms a hollow box section, connects the rear raiser and the blanking sheet, an upper face of the anchoring reinforcement supports a connecting piece, the connecting piece also being assembled, on the outside of the hollow beam, with the rear raiser. ## Claims ### Claim 1 A motor vehicle chassis comprising: a rear central crossmember; a hollow beam arranged above the rear central crossmember along the rear central crossmember; and a floor seat-cushion support part including rear seat fittings, supported to a rear by the hollow beam positioned under the seat-cushion support part; the beam comprising a rear raising part comprising a horizontal plate fixed to the rear central crossmember; the beam further comprising a blanking sheet fixed to the horizontal plate of the rear raising part and comprising at least one anchoring reinforcement assembled inside the hollow beam, the reinforcement forming a hollow box structure connecting the rear raising part and the blanking sheet, an upper face of the anchoring reinforcement supporting a mounting part, the mounting part being also assembled on an outside of the hollow beam to the rear raising part. ### Claim 2 (depends on 1) The motor vehicle chassis as claimed in claim 1, wherein the upper face of the anchoring reinforcement is made flush in a vicinity of the seat-cushion support part of a floor. ### Claim 3 (depends on 2) The motor vehicle chassis as claimed in claim 2, wherein the hollow beam is delimited by a face forming part of the blanking sheet, by two faces forming part of the rear raising part, and by three faces formed by a sheet folded in a U-shape assembled inside the hollow beam. ### Claim 4 (depends on 1) The motor vehicle chassis as claimed in claim 1, wherein a rear seat fitting is anchored to a mounting part fixed to the anchoring reinforcement. ### Claim 5 (depends on 4) The motor vehicle chassis as claimed in claim 4, comprising at least two anchoring reinforcements, and wherein anchoring parts for seat belts are anchored to the mounting parts. ### Claim 6 (depends on 1) The motor vehicle chassis as claimed in claim 1, each mounting part comprising a hollow volume assembled to an external face of the rear raising part and extended by a planar bearing surface assembled to a rear part of the seat-cushion support part in a region of the anchoring reinforcement. ### Claim 7 (depends on 1) The motor vehicle chassis as claimed in claim 1, wherein the blanking sheet comprises a vertical surface parallel to a vertical plate of the rear raising part, and two lateral vertical surfaces folded back from the vertical surface and assembled to the vertical plate of the rear raising part, along sides thereof. ### Claim 8 (depends on 1) The motor vehicle chassis as claimed in claim 1, comprising two longitudinal members connected by the rear central crossmember and covered at a front of the crossmember by lateral floor reinforcements, a transverse reinforcement being fixed to the lateral reinforcements and two lateral raising parts being fixed to the lateral reinforcements, the seat-cushion support part of a floor being fixed above the two lateral raising parts, the rear raising part and the transverse reinforcement so as to create a housing for an energy storage tank below the seat-cushion support part of the floor. ### Claim 9 (depends on 8) The motor vehicle chassis as claimed in claim 8, wherein a strip of the horizontal plate of the rear raising part protrudes beyond a rear of the vehicle relative to the blanking sheet and relative to the rear central crossmember. ### Claim 10 (depends on 9) The motor vehicle chassis as claimed in claim 9, wherein the rear raising part and the transverse reinforcement extend solely between internal sides of the two lateral floor reinforcements.