Environment structure for suspension frame of vehicle

Abstract

The invention provides a surrounding structure for a suspension frame of a vehicle, which is capable of highly effectively bearing loads and vibrations applied onto the body of the vehicle and increasing the rigidity of the body of the vehicle. A suspension frame (4) arranged between a pair of lower arms (3) comprises a front arm (10) and a rear arm (11) extending outwardly from the two ends of a middle connection body in the vehicle width direction; and a front suspension frame body (12) and a rear suspension frame body (14) respectively extending outwardly from the two ends of the front and rear arms in the vehicle width direction. An outer supporting arm (16) connects the front and rear suspension frame bodies (13, 14). A front suspension frame shaft (19) penetrates through a penetration hole (3b 1) of a front installation part (3b) of a lower arm (3) configured between a front end wall (12a) of the front suspension body (12) and a front end wall (16a) of the outer supporting arm (16), as well as a penetration hole (12a 1) of the front end wall (12a). A front end portion of the front suspension frame shaft (19) is installed on the front end wall (12a), while a rear end portion of the front suspension frame shaft (19) is connected with an installation nut (18) for installing the rear end portion onto the front end wall (16a) of the outer supporting arm (16).

Description

technical field [0001] The present invention relates to a peripheral structure of a suspension frame arranged between a pair of left and right side frames in the vehicle width direction. Background technique [0002] In a vehicle such as an automobile, a pair of side frames are provided at a distance from each other in the vehicle width direction as members constituting the frame of the vehicle body. Around each pair of side frames, a lower arm is provided as a part constituting the suspension mechanism, and when the vehicle is running, load and vibration are input from the wheels to the vehicle body through the lower arm. Such loads and vibrations include, for example, loads and vibrations in the vehicle width direction when the vehicle is turning, loads and vibrations in the front and rear directions of the vehicle when the vehicle is braking and accelerating, and loads and vibrations in the vertical direction caused by unevenness of the road surface. Vibration, loads and...

AI Technical Summary

Problems solved by technology

However, the structure of Patent Document 1 cannot sufficiently withstand this moment.

Therefore, in the structure of Patent Document 1, it is difficult to withstand the load and vibration in the vehicle width direction, and the rigidity of the vehicle body with respect to the load and vibration in the vehicle width direction cannot be efficiently improved by using the suspension frame.

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