DOWN KNOB / Doorknob

The situation of opening the door with the something on both hands can be taken place frequently. It is not easy to open the door without assistance in the situation of impossibility of using both hands.
It will be more difficult in case of the door to be opened by turning the knob. In order to cope with such situation, the ‘Down Knob’ is the concept of opening the door by placing the luggage onto the door knob.