Vehicle body joint structure
View Patent ↗An embodiment joint structure of a vehicle body includes a mount bracket attached to a side member of an underbody of the vehicle body and a supporting unit coupled to the mount bracket and to a lower part of a pillar of an upper body of the vehicle body. An embodiment vehicle includes a vehicle body including an underbody and an upper body coupled to the underbody, wherein the upper body includes a plurality of pillars extending in a vertical direction of the vehicle, a floor panel coupled to the plurality of pillars, a mount bracket attached to a side member of the underbody, and a supporting unit coupled to the mount bracket and to a lower part of a pillar of the plurality of pillars.
1. A joint structure of a vehicle body, the joint structure comprising:
a mount bracket attached to a side member of an underbody of the vehicle body; and
a supporting unit coupled to the mount bracket and to a lower part of a pillar of an upper body of the vehicle body;
wherein the mount bracket comprises an upper plate and a lower plate coupled to the side member, a side plate connecting the upper plate and the lower plate, and a spacer coupled to the upper plate and the lower plate between the upper plate and the lower plate.
2. The joint structure of claim 1 , wherein the supporting unit comprises:
a supporting bracket coupled to an inner surface of the lower part of the pillar and fitted to the lower part of the pillar, the pillar having a closed cross-section; and
a pipe nut coupled to the supporting bracket in a vertical direction.
3. The joint structure of claim 2 , wherein the supporting bracket comprises:
a joint flange part extending downward outside an edge of an upper surface of the supporting bracket and coupled to the inner surface of the lower part of the pillar; and
a forming part extending downward along the joint flange part inside the edge of the upper surface of the supporting bracket.
4. The joint structure of claim 3 , wherein:
the forming part comprises a forming upper surface and a forming lower surface; and
a lower end of the pipe nut is coupled to the forming upper surface.
5. The joint structure of claim 4 , wherein the forming part supports an upper surface of the mount bracket through the forming lower surface.
6. The joint structure of claim 3 , wherein an engage bolt penetrates the mount bracket and the forming part in the vertical direction to engage with the pipe nut.
7. The joint structure of claim 2 , wherein:
the lower part of the pillar has a closed cross-section of a trapezoidal shape; and
the supporting bracket has a shape corresponding to the closed cross-section.
8. The joint structure of claim 1 , wherein an engage bolt penetrates the lower plate, the spacer, and the upper plate in a vertical direction to engage with the supporting unit.
9. A joint structure of a vehicle body, the joint structure comprising:
a mount bracket attached to a side member of an underbody of the vehicle body; and
a supporting unit coupled to the mount bracket and to a lower part of a pillar of an upper body of the vehicle body; and
a lower extension member extending from a vertical direction to a vehicle body front-rear direction, the lower extension member being coupled to the pillar.
10. The joint structure of claim 9 , wherein the supporting unit is coupled to a lower part of the lower extension member.
11. The joint structure of claim 1 , wherein the pillar is coupled to a floor panel through a pillar inner member.
12. The joint structure of claim 1 , further comprising a plurality of pillars, wherein a pair of the plurality of pillars facing each other are connected through a sliding rail reinforcement member.
13. The joint structure of claim 1 , wherein a pillar inner member comprises a tapered part, and a distance from a pillar outer member gradually increases toward a lower side of the pillar.
14. A vehicle comprising:
a vehicle body comprising an underbody and an upper body coupled to the underbody, wherein the upper body comprises a plurality of pillars extending in a vertical direction of the vehicle;
a floor panel coupled to the plurality of pillars;
a mount bracket attached to a side member of the underbody; and
a supporting unit coupled to the mount bracket and to a lower part of a pillar of the plurality of pillars;
wherein the mount bracket comprises an upper plate and a lower plate coupled to the side member, a side plate connecting the upper plate and the lower plate, and a spacer coupled to the upper plate and the lower plate between the upper plate and the lower plate.
15. The vehicle of claim 14 , wherein the supporting unit comprises:
a supporting bracket coupled to an inner surface of the lower part of the pillar and fitted to the lower part of the pillar, the pillar having a closed cross-section; and
a pipe nut coupled to the supporting bracket in a vertical direction.
16. The vehicle of claim 15 , wherein the supporting bracket comprises:
a joint flange part extending downward outside an edge of an upper surface of the supporting bracket and coupled to the inner surface of the lower part of the pillar; and
a forming part extending downward along the joint flange part inside the edge of the upper surface of the supporting bracket.
17. The vehicle of claim 16 , wherein an engage bolt penetrates the mount bracket and the forming part in the vertical direction to engage with the pipe nut.
18. The vehicle of claim 14 , wherein an engage bolt penetrates the lower plate, the spacer, and the upper plate in the vertical direction to engage with the supporting unit.
19. The vehicle of claim 14 , further comprising a sliding rail reinforcement member, wherein a facing pair of the plurality of pillars are connected through the sliding rail reinforcement member.
20. The joint structure of claim 9 , wherein the supporting unit comprises:
a supporting bracket coupled to an inner surface of the lower part of the pillar and fitted to the lower part of the pillar, the pillar having a closed cross-section; and
a pipe nut coupled to the supporting bracket in a vertical direction.