RESTRAINING DEVICE, RESTRAINING ASSEMBLY AND SEAT UNIT

A restraining device of a seat unit is described. This restraining device is able to protect a person without relying on a supporting surface. The restraining device has an airbag which comprises in the deployed state a first part (30), a second part (40) and a third part (50). The first part (30) extends from its first end (30a) in a first direction (X) over the shoulder of a person (P) sitting in the vehicle seat (10) to a backrest-distal second end (30b) being located in front of the person's head and/or torso, and in a second direction (Y) from a person-outer third end (30c) to a person-inner fourth end (30d). The second part (40) extends in a third direction (Z) from a fifth end (40a) to a sixth end (40b) and from a backrest-proximate seventh end (40c) to a backrest-distal eighth end (40d), such that a least an upper section (42) of the second part (40) extends laterally of the person's head. The third part (50) extends in the second direction (Y) from a person-outer ninth end (50a) to a person-inner tenth end (50b), such that at least an upper section of the third part (50) faces the person's face.