Integral type hot-stamping vehicle body structure and vehicle applying the same

1. An integral hot-stamped vehicle body structure comprising:

an integral hot-stamped panel separated into an A pillar section forming an A pillar, a B pillar section forming a B pillar, and a C pillar section forming a C pillar, and forming a side sill with lower portions of the A pillar section, the B pillar section, and the C pillar section; and

a joint member disposed on the A pillar section and occupying an open front joint space in the A pillar section,

wherein the joint member comprises an inner bracket and an outer bracket forming a closed section into dual closed sections,

wherein a first end flange of the inner bracket and a first end flange of the outer bracket are welded to a side of a pillar lower portion of the A pillar section to form a first fixed portion and a second fixed portion, respectively, and

wherein a second end flange of the inner bracket and a second end flange of the outer bracket are connected to each other to form a third fixed portion positioned out of a space horizontally formed between the first and second fixed portions.

2. The integral hot-stamped vehicle body structure of claim 1 , wherein the front joint space is blocked by a front pillar side inner which is added on the A pillar section, and the joint member occupies the front joint space to form the closed section.

3. The integral hot-stamped vehicle body structure of claim 2 , wherein the front joint space is separated into a side sill joint space and a pillar lower end joint space, and the closed section is formed in the side sill joint space.

4. The integral hot-stamped vehicle body structure of claim 1 , wherein the dual closed sections are separated into an upper closed section which is formed by an upper portion of the outer bracket and the inner bracket, and a lower closed section which is formed by a lower portion of the outer bracket, the front pillar section, and a bottom portion of an A pillar side inner.

5. The integral hot-stamped vehicle body structure of claim 1 , wherein the inner bracket has a flat body formed in a straight line shape, and the outer bracket has a space body formed in a “U” shape.

6. The integral hot-stamped vehicle body structure of claim 5 ,

wherein the first end flange and the second end flange of the inner bracket are formed at the flat body by bending both ends of the flat body toward opposite directions from each other;

wherein the first end flange and the second end flange of the outer bracket are formed at the space body by bending both ends of the space body toward opposite directions from each other; and

wherein the first end flange and the second end flange of the inner bracket, and the first end flange and the second end flange of the outer bracket, are formed as welding portions.

7. The integral hot-stamped vehicle body structure of claim 6 , wherein the inner bracket is configured with an extended bracket formed at the flat body.

8. The integral hot-stamped vehicle body structure of claim 6 , wherein the outer bracket is configured with a plurality of holes bored in the space body.

9. The integral hot-stamping vehicle body structure of claim 1 , wherein the joint member further comprises a guide bracket positioned toward the inner bracket of the joint member, and the guide bracket disperses overlap impact being applied to the A pillar section.

10. The integral hot-stamped vehicle body structure of claim 9 , wherein the guide bracket is slanted to make an acute angle in an upward direction with respect to the inner bracket.

11. The integral hot-stamped vehicle body structure of claim 9 , wherein the guide bracket is formed as a rectangular body, which are bent at 90 degrees at each of four sides.

12. The integral hot-stamped vehicle body structure of claim 11 , wherein a slot is bored at the rectangle body.

13. A vehicle comprising:

the integral hot-stamped vehicle body structure of claim 1 ,

wherein the integral hot-stamped vehicle body structure is applied to a side frame of the vehicle.