Environment structure for side frame of vehicle

Abstract

The invention provides a surrounding structure for a side frame of a vehicle, which is easy to manufacture and capable of reducing the manufacture cost, realizing the lowered gravity center, increasing the driving stability, and effectively absorbing loads in the vehicle longitudinal direction. The surrounding structure for the side frame of the vehicle comprises a gear box arranged in the vehicle transverse direction at a center of the vehicle, a tire located in the vehicle transverse direction towards the outside, a drive shaft coupling the gear box and the tire, and a side frame arranged above the drive shaft in the vehicle longitudinal direction. The side frame is provided with an inner plate and an outer plate which are mutually engaged. The inner plate is provided with an inner portion which constitutes a central end part of the side frame in the vehicle transverse direction and is along the vertical direction. The outer plate is provided with a flange which constitutes a lower portion of the side frame and protrudes downwards along the lower portion in the vehicle transverse direction and from a central end portion of the lower portion in the vehicle transverse direction. A lower end portion of the inner portion of the inner plate is engaged with the flange of the outer plate.

Description

Technical field [0001] The present invention relates to a peripheral structure of a side frame arranged in the front and rear direction of the vehicle above a drive shaft extending in the width direction of the vehicle. Background technique [0002] Generally, a pair of left and right side frames in the vehicle width direction is provided at the front of a vehicle such as an automobile as one of the members constituting the body frame. The side frame is arranged along the vehicle front and rear direction on the outer side in the vehicle width direction, and the closed cross section of the side frame is mainly formed by joining two plates. A drive shaft of a transmission that extends in the vehicle width direction and connects a tire at the center of the vehicle width direction and a transmission outside in the vehicle width direction is arranged below such a side frame. Therefore, the side frame needs to be formed to avoid the drive shaft. [0003] Therefore, in one of the conven...

AI Technical Summary

Problems solved by technology

However, when a load in the front-rear direction is applied to the vehicle, since the stress concentrates on the relatively curved portion of the side frame, deformation in the front-rear direction of the side frame cannot be promoted, and the load in the front-rear direction cannot be absorbed by the side frame. The frame as a whole absorbs efficiently

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