Vehicle body
A vehicle body may include: a side sill extending in the lengthwise direction of a vehicle; and a cross member extending in the widthwise direction of the vehicle and coupled at an end thereof to the side sill, wherein: the side sill comprises an inner panel, an outer panel coupled to the inner panel, an outer panel coupled to the inner panel, and a reinforcement member disposed between the inner panel and the outer panel; the inner panel includes an inclined surface formed to have an ascending slope from the inner side to the outer side of the vehicle; the end of the cross member is formed to have a slope corresponding to the inclined surface and is coupled to the outer surface of the inclined surface; and one end of the reinforcement member is coupled to the inner surface of the inclined surface.
1 . A vehicle body, comprising:
a side sill extending in a lengthwise direction of a vehicle; and
a cross member extending in a widthwise direction of the vehicle, an end thereof being coupled to the side sill,
wherein:
the side sill includes
an inner panel;
an outer panel coupled to the inner panel; and
a reinforcing member disposed between the inner panel and the outer panel,
the inner panel includes an inclined surface formed to have an ascending slope from an inner side to an outer side of the vehicle,
an end of the cross member is formed to have a slope corresponding to the inclined surface and is coupled to an outer surface of the inclined surface,
one end of the reinforcing member is coupled to an inner surface of the inclined surface,
the reinforcing member comprises a first reinforcing member coupled to the inner panel, and a second reinforcing member coupled to the outer panel,
one end of the first reinforcing member is coupled to an inner wall of the inclined surface,
the first reinforcing member and the second reinforcing member are partially in contact with each other at a plurality of surfaces, and are fixed,
a plurality of contact surfaces on which the first reinforcing member and the second reinforcing member are in contact with each other is located at a central portion of the side sill and extends to be parallel to a vertical line extending in the height direction of the vehicle.
2 . The vehicle body of claim 1 , wherein the inclined surface is inclined at an angle between 8 to 20 degrees with a vertical line extending in a height direction of the vehicle.
3 . The vehicle body of claim 1 , wherein each of the first reinforcing member and the second reinforcing member is formed by bending a single sheet material.
4 . The vehicle body of claim 1 , wherein an end of the cross member comprises a first flange surface formed without notches.
5 . The vehicle body of claim 4 , wherein the first flange surface is inclined at the same angle as the inclined surface, and is coupled to be in contact with an outer surface of the inclined surface.
6 . The vehicle body of claim 5 , wherein the cross member comprises
a pair of wall surfaces extending in a height direction of the vehicle, and
a connection surface connecting one end of the pair of wall surfaces,
wherein the other end of the wall surface is bent to form a second flange surface.
7 . The vehicle body of claim 6 , wherein a bead portion formed to extend in a lengthwise direction of the cross member is disposed on the connection surface of the cross member,
wherein a depth or height of the bead portion is formed to be variable.
8 . The vehicle body of claim 7 , wherein an intermediate portion and both ends of the cross member are formed of sheet materials of different materials and then coupled to each other by welding.
9 . The vehicle body of claim 8 , wherein the intermediate portion of the cross member has a strength equal to or greater than the strength of both ends, and has a thickness less than or equal to the thickness of both ends.
10 . The vehicle body of claim 8 , wherein in the intermediate portion, the bead portion has a certain depth or height, and
at the both ends, the depth of the bead portion becomes shallower or the height of the bead portion becomes lower as the distance thereof from the intermediate portion increases.
11 . The vehicle body of claim 1 , wherein the side sill and the cross member are made of a sheet material formed of ultra-high strength steel of 780 MPa or more.