Lower vehicle-body structure of vehicle

Patent metadata

Field	Value
Publication number	US-9623908-B2
Application number	US-201514966193-A
Country	US
Kind code	B2
Filing date	Dec 11, 2015
Priority date	Jan 21, 2015
Publication date	Apr 18, 2017
Grant date	Apr 18, 2017

Abstract

A tunnel side frame includes a U-shaped portion having a U-shaped cross section opening upward, the U-shaped portion comprising a bottom face portion, an outer face portion, and an inner face portion. A front tunnel member comprises a first face portion which faces to the bottom face portion of the tunnel side frame, a second face portion which faces to the inner face portion of the tunnel side frame, and a third face portion which extends inward from an upper end of the second face portion. The front tunnel member is attached to a vehicle body by attaching the first face portion to the bottom face portion of the U-shaped portion and attaching the third face portion to a floor tunnel.

First claim

What is claimed is:

1. A lower vehicle-body structure of a vehicle, comprising:
right-and-left side sills extending in a vehicle longitudinal direction at both outward sides, in a vehicle width direction, of a vehicle body;
a floor panel connected to the right-and-left side sills;
a floor tunnel protruding upward at a central portion of the floor panel;
a pair of tunnel side frames extending in the vehicle longitudinal direction along both sides, in the vehicle width direction, of the floor tunnel; and
a tunnel member connecting right-and-left lower portions of the floor tunnel,
wherein said tunnel side frame includes a U-shaped portion having a U-shaped cross section which opens upward, the U-shaped portion comprising a bottom face portion, an outer face portion, and an inner face portion,
said tunnel member comprises a first face portion which opposes said bottom face portion of the tunnel side frame, a second face portion which opposes said inner face portion of the tunnel side frame, and a third face portion which extends inward from an upper end of said second face portion, and
said tunnel member is attached to the vehicle body by attaching said first face portion to said bottom face portion of the tunnel side frame and attaching said third face portion to said floor tunnel directly or via a bracket, respectively.

2. The lower vehicle-body structure of the vehicle of claim 1 , wherein two portions of said attaching are provided substantially at the same position in the vehicle longitudinal direction.

3. A lower vehicle-body structure of a vehicle, comprising:
right-and-left side sills extending in a vehicle longitudinal direction at both outward sides, in a vehicle width direction, of a vehicle body;
a floor panel connected to the right-and-left side sills;
a floor tunnel protruding upward at a central portion of the floor panel;
a pair of tunnel side frames extending in the vehicle longitudinal direction along both sides, in the vehicle width direction, of the floor tunnel; and
a tunnel member connecting right-and-left lower portions of the floor tunnel,
wherein said tunnel side frame includes a U-shaped portion having a U-shaped cross section which opens upward, the U-shaped portion comprising a bottom face portion, an outer face portion, and an inner face portion,
said tunnel member comprises a first face portion which faces to said bottom face portion of the tunnel side frame, a second face portion which faces to said inner face portion of the tunnel side frame, and a third face portion which extends inward from an upper end of said second face portion, and
said tunnel member is attached to the vehicle body by attaching said second face portion to said inner face portion of the tunnel side frame directly or via a bracket.

4. The lower vehicle-body structure of the vehicle of claim 3 , wherein said tunnel member is attached to the vehicle body by attaching said first face portion to said bottom face portion of the tunnel side frame directly or via a bracket.

5. The lower vehicle-body structure of the vehicle of claim 4 , wherein two portions of said attaching are provided substantially at the same position in the vehicle longitudinal direction.

Assignees

• Mazda Motor

Inventors

• Natsume Hirotaka
• Maruyama Kenji
• Hanazaki Masanobu

Classifications

• B62D21/06 Primary

  of X-shaped or fork-shaped construction, i.e. having members which form an X or fork as the frame is seen in plan view · CPC title

• B62D25/2036

  the subunits being side panels, sills or pillars (B62D21/157 takes precedence) · CPC title