TORSION BEAM JOINT STRUCTURE

There is provided a torsion beam joint structure in a torsion beam suspension including a torsion beam and right and left trailing arms connected to end portions of the torsion beam. The torsion beam has front and rear wall portions, an upper wall portion, and an opening provided at a lower side in an upper-lower direction of the vehicle. The front wall portion and the rear wall portion have a set of joint portions on their right side and left side in the vehicle width direction, by which the front wall portion and the rear wall portion are joined to each of the trailing arms. The set of joint portions includes an outer joint portion located on an outer side at a lowermost position, and an inner joint portion located on an inner side at an uppermost position. The inner joint portion is located higher than the outer joint portion.