Vehicle door device

The present invention addresses the problem of ensuring high suitability to the front door of a vehicle. A vehicle door device (30) is provided with a first link arm (71) and a second link arm (72) having a first rotational connection point (X1) with respect to a vehicle body (2) and a second rotational connection point (X2) with respect to a front door (31) of a vehicle (1). Furthermore, in this vehicle door device (30), the front door (31) opens toward the front side of the vehicle on the basis of the operation of a first link mechanism (51) formed by the first link arm (71) and the second link arm (72). Furthermore, the first link arm (71) has a first rotational connection point (X1) with respect to the vehicle body (2) on the inner side of a dash panel (210) provided in the front portion (200f) of the vehicle cabin (200). 本发明的课题在于确保对车辆的前部门的较高的适合性。车辆用门装置(30)具备第一连杆臂(71)和第二连杆臂(72)，该第一连杆臂(71)和第二连杆臂(72)具有相对于车身(2)的第一转动连结点(X1)和相对于车辆(1)的前部门(31)的第二转动连结点(X2)。而且，在该车辆用门装置(30)中，基于这些第一连杆臂(71)和第二连杆臂(72)所形成的第一连杆机构(51)的动作