#$%^&*AU2013101595A420140109.pdf#####ABSTRACT BARRIER DEVICE A barrier device is pivotally mounted on a seat apparatus (1) that includes a barrier retainer (11 5 The barrier device includes a barrier plate body (2) that is pivotable relative to the seat apparatus (1) between fixed and unfixed positions, and a locking unit (3) that i mounted inside the barrier plate body (2) The barrier plate body (2) has a through hole (211) and 10 an aperture (221) comunicating with the through hole (211) , The locking unit has a press portion (31) that extends into and. is pressable from the aperture (221) When. the pre-ss portion (31) is not pressed, the press porcti on 1) is flush with a looped surface of the barrier 15 plate body (2) that bounds the through hole (2111) (Figure 3)CIAl Y-Z '11 19