Patent ID: 9616933
Date: 2017-04-11
CPC Classifications: B60G,B62D

Claim:
1. A sub frame structure of a vehicle which is rigidly connected to a vehicle body, comprising: a pair of right-and-left side members extending in a vehicle longitudinal direction, to which a pair of right-and-left arm members supporting right-and-left rear wheels are pivotally connected, each of the arm members including two front-and-rear connection portions to be pivotally connected to the side member, the two front-and-rear connection portions being spaced apart from each other such that the arm member rotates vertically around a rotational axis connecting the two front-and-rear connection portions; and a rear cross member holding the vicinity of respective rear ends of the pair of right-and-left side members; and a front cross member interconnecting the pair of right-and-left side members in a vehicle width direction and being positioned in front of the rear cross member, being spaced apart from the rear cross member, wherein each of said side members includes two front-and-rear arm connection portions which support said two front-and-rear connection portions of the arm member, respectively, said rear arm connection portion is positioned at a lower level than said front arm connection portion, and a portion of the side member which is located near said rear arm connection portion is configured to be weaker than another portion of the side member which is located near said front arm connection portion, whereby the rear arm connection portion is caused to be displaced so as to rotate forward and downward around the front arm connection portion when receiving a longitudinal load in a vehicle rear collision.