Reinforcement structure of the back door opening shoulder of the vehicle

Abstract

The structure has a tailgate hinge reinforcing part provided on a mounting portion (3) of a tailgate hinge. A shoulder portion reinforcing part is provided on a rear door opening shoulder portion (2) under a roof covering (6) for reinforcing the shoulder portion. The shoulder portion reinforcing part is connected with an outer lateral extension metal sheet at an external connection point of two locations in a vehicle transverse direction, when the shoulder portion reinforcing part is connected with the tailgate hinge reinforcing part in an inside of a vehicle body.

Description

technical field [0001] The present invention relates to a reinforcement structure for a hatchback opening shoulder of a hatchback vehicle, in particular to a reinforcement structure for a hatchback opening shoulder of a hatchback vehicle having a door hinge portion on the upper rear side of the vehicle body and the hatchback opening upwards structure. Background technique [0002] Conventionally, a back door opening portion of a hatchback type vehicle is designed to have a large area in the rear of the vehicle in order to increase loading capacity or improve workability when loading and unloading luggage. At the same time, when the area of ​​the back door opening is formed large, the rigidity of the entire vehicle decreases, so it is necessary to increase the rigidity of the periphery of the back door opening. [0003] Therefore, some conventional hatchback vehicles are configured to reinforce the rear door opening by increasing the joint rigidity of panels or the like cons...

AI Technical Summary

Problems solved by technology

[0010] When the back door hinge reinforcement 54 extends to the outside in the vehicle width direction and is joined to the roof panel 51 , spot welding may be performed at two joining points W in a common plate of the roof panel 51 and the back door hinge reinforcement 54 , However, the back door hinge reinforcement 54 is installed on the structural member inside the vehicle body and has a role to support the load from the mounting portion 74 of the back door hinge together with the vehicle body frame, therefore, if the back door hinge reinforcement 54 is joined to the vehicle body frame On the roof panel 51 provided separately, it is difficult to obtain the original rigid effect of the rear door hinge reinforcement 54.

In addition, deformation of the mounting portion 74 of the back door hinge due to load deforms the roof panel 51 via the back door hinge reinforcement 54, which deteriorates the appearance and creates a disadvantage in maintaining the quality of the appearance.

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