Underbody structure of automobile

A car body and automobile technology, applied in the direction of substructure, superstructure, vehicle parts, etc.
CN107640227BActive Publication Date: 2019-10-25MAZDA MOTOR CORP
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
MAZDA MOTOR CORP
Publication Date
2019-10-25

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Abstract

To provide an automobile underbody structure in which auxiliary equipment such as a battery is arranged under the floor so that the vehicle does not become heavier and the auxiliary equipment can be protected from severe side impacts such as columnar collisions. An auxiliary machine (40) is arranged in the space S between the floor frame (9a) extending in the front-rear direction and the channel side beam (8a) in the vehicle width direction on the lower side of the floor (4), and the beam (40) extending in the vehicle width direction is installed. 2, 3), the beam (2, 3) straddles the floor frame (9a) on the side where the auxiliary machine (40) is installed in the vehicle width direction and the side opposite to the side where the auxiliary machine (40) is installed The tunnel side beams (8b) on the side, and the tunnel corresponding parts (21, 31) corresponding to the tunnel part (4a) in the width direction of the beams (2, 3) are set so that the vehicle width direction resistance is higher than that of the auxiliary machine (40 ) corresponding to the auxiliary machine corresponding parts (31, 32) have lower endurance in the vehicle width direction.
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Description

technical field

[0001] The present invention relates to an underbody structure of an automobile in which auxiliary machines such as batteries are arranged below a floor. Background technique

[0002] Patent Documents 1 and 2 disclose the underbody structure of an automobile in which auxiliary machines such as batteries are disposed below the floor.

[0003] In Patent Document 1, the battery module as an auxiliary machine is arranged on the left and right sides of the floor, from the back side of the floor, in the space surrounded by the floor frame, the tunnel frame (tunnel side beams), and the seat beams on the front and rear sides. In the region, the floor frame and the tunnel frame are vehicle body rigid members extending in the front-rear direction, and the seat beams on the front and rear sides are vehicle body rigid members extending in the vehicle width direction.

[0004] That is, the battery module of Patent Document 1 is arranged on the floor so as to be surrounde...

Claims

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