Vehicle frame structure

A vehicle frame structure comprising:

• an inner panel connected to a rear side of a middle part of a side member so as to constitute an inside of a rear part of the side member;
• an outer panel connected to the rear side of the middle part of the side member and coupled to an outside of the inner panel so as to form a closed section with the inner panel and to constitute an outside of the rear part of the side member;
• an opening formed in lower sides of the inner panel and the outer panel so as to partially open the closed section formed by the inner panel and the outer panel such that a front end of a rear suspension arm can be inserted therein;
• a first reinforcement member provided in the opening so as to form a first closed portion with the inner panel;
• and
• a second reinforcement member provided in the opening so as to form a second closed portion with the inner panel, the outer panel, and the first reinforcement member and to isolate a space formed by the inner panel and the outer panel from an outer portion.