# US 10,479,392 B2 · Vehicle lower portion structure

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- Number: US 10,479,392 B2
- Document ID: US10479392B2
- Status: Granted
- Kind: B2
- Application number: 15/708,466
- Filed: 2017-09-19
- Published: 2018-04-05
- Granted: 2019-11-19
- Earliest claimed: 2016-10-03
- Assignees: Toyota Jidosha Kabushiki Kaisha
- Applicants: Toyota Jidosha Kabushiki Kaisha
- Inventors: Yuichiro Suzuki
- Web page: https://patentgrep.com/patent/US10479392B2

## CPC

- B62D 1/02: vehicle-mounted
- B60R 19/24: Arrangements for mounting bumpers on vehicles
- B62D 3/12: of rack-and-pinion type
- B62D 21/02: comprising longitudinally or transversely arranged frame members
- B62D 21/05: pinched frame type, i.e. formed of at least two longitudinal frame sections connected by other longitudinal frame sections of lesser transverse dimension
- B62D 21/12: assembled from readily detachable parts
- B62D 27/065: {using screwthread (connection of crossbeam to A- pillars B62D25/147; mounting load bearing surfaces B62D21/09; securing mudguards B62D25/163; connections for synthetic parts B62D29/048)}
- B62D 25/08: Front or rear portions {(sub-frames for mounting engine or suspensions B62D21/11)}
- 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)
- B60R: VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR

## Abstract

A vehicle lower portion structure includes: a suspension member including a pair of left and right under from side members that extend in a vehicle front-rear direction, a cross member that extends in a vehicle transverse direction and connects the under front side members, and a steering gear box that extends in the vehicle transverse direction and is formed integrally with the cross member; and an under front bumper reinforcement that extends in the vehicle transverse direction and is installed between front end portions of the pair left and right under front side members.

## Claims

### Claim 1

A vehicle lower portion structure comprising:
a suspension member including a pair of left and right under front side members that extend in a vehicle front-rear direction, a cross member that extends in a vehicle transverse direction and connects the under front side members, and a steering gear box that extends in the vehicle transverse direction and is formed integrally with the cross member; and
an under front bumper reinforcement that extends in the vehicle transverse direction and is installed between front end portions of the pair of left and right under front side members,
wherein the under front bumper is installed between the front end portions of the pair of left and right under front side members via crash boxes.

### Claim 2 (depends on 1)

The vehicle lower portion structure of claim 1, wherein the under front side members include fit-together portions with which vehicle transverse direction both end portions of the cross member are fit-together and joined.

### Claim 3 (depends on 2)

The vehicle lower portion structure of claim 2, wherein the vehicle transverse direction both end portions of the cross member are joined to the fit-together portions by fastening by bolts.

### Claim 4 (depends on 2)

The vehicle lower portion structure of claim 2, wherein each of the fit-together portions includes a front wall, a top wall, a rear wall, a bottom wall, and an outer wall formed in a shape of a housing that opens towards a vehicle transverse direction inner side, the vehicle transverse direction both end portions of the cross member being respectively inserted into the fit-together portions.

### Claim 5 (depends on 1)

The vehicle lower portion structure of claim 1, wherein a radiator is mounted to the front end portion of the pair of left and right under front side members, the radiator being disposed between the under front bumper reinforcement and the cross member in the vehicle front-rear direction.

### Claim 6 (depends on 1)

The vehicle lower portion structure of claim 1, wherein the cross member is formed of a rectangular open cross-sectional shape that opens downward.