Front body structure of vehicle

1. A front body structure of a vehicle, comprising:

a closed loop member projected on a front surface of a body and configured to form a closed loop such that both sides of the closed loop are coupled to front ends of front side members at both sides of the body;

a back beam assembly coupled to a front part of the closed loop member; and

lower reinforcement members connecting a lower portion of the closed loop member, at both sides thereof, to a front part of a subframe,

wherein the lower portion of the closed loop member is provided with a reinforcement insert extending in a transverse direction of the body, and

wherein the lower reinforcement members are coupled to a rear part of the reinforcement insert to connect the rear part of the reinforcement insert to the subframe.

2. The front body structure according to claim 1 , wherein the closed loop member is a front end module carrier.

3. The front body structure according to claim 1 , wherein the back beam assembly comprises:

back beam support members coupled to respective front parts of both sides of the closed loop member; and

a back beam coupled to a front part of the back beam support members while extending in a transverse direction of the body.

4. The front body structure according to claim 3 , wherein the back beam support members are installed to be rectilinearly aligned with the front side members in a forward and rearward direction of the body with the closed loop member interposed therebetween.

5. The front body structure according to claim 1 , wherein the lower portion of the closed loop member has a cap-type cross-sectional structure that is open toward a rear of the body.

6. The front body structure according to claim 1 , wherein each of the lower reinforcement members is configured by coupling an inner panel inside the body to an outer panel outside the body with a closed space defined therebetween, and has a polyprism shape that extends in a forward and rearward direction of the body.

7. The front body structure according to claim 6 , wherein a plurality of shock absorbing beads are arranged in a front of the inner panel and outer panel of the lower reinforcement members in a longitudinal direction of the lower reinforcement members.

8. The front body structure according to claim 6 , wherein a rear end of the lower reinforcement members has a cross-sectional structure that is opened to enlarge an area coupled to the front part of the subframe.

9. The front body structure according to claim 1 , wherein the closed loop member, the front side members, the subframe, and the lower reinforcement members are connected in turn such that a shape thereof projected in a lateral direction of the body forms a closed curve therein.