Abstract: Operation switches, which a passenger operates with his/her fingers, are disposed on the front end of the upper portion of a console box, and a palm rest on which the passenger rests his/her palm is set rearward of the operation switches. An operation knob that releases the locked state of the console box is disposed on a lower portion of the palm rest in a range where the passenger can reach the operation knob with his/her fingers. Consequently, when the passenger wishes to adjust the front-rear position of the palm rest, the passenger can move the console box by simply lifting up the operation knob with one hand to release the locked state, and without having to conduct an operation such as opening a lid or the like.