the bell crank 19 is positioned at the upper end of the opening 17 in this state even if the door is opened and next closed after the lock knob 31 has been set to the locked position downward since the bell crank 19 can freely come into the lower end of the opening 17 the closed door is locked without damaging the actuation member 14 fig4 b shows the state where the lock knob 31 is set to the locked position the remote control lever 1 is set to the locked position and the actuation member 14 is also set to the locked position which is obtained when the remote control lever 1 is moved in the locked direction from the state shown in fig4 a to lock the door since the bottom end of the slot 13 moves the pin 15 upward the opening 17 goes downward to lower the bell crank 19 so that the lock knob is set to the locked position by the remote control lever 1 fig4 c shows the state where the remote control lever 1 is released to the neutral position from the state shown in fig4 b with the actuation member 14 kept in the locked position in this state it is possible to unlock the door by pulling upward the lock knob 31 connected to the door lock member 23 without moving the remote control lever 1 because the projection pin 15 is engaged with the top end of the slot 13 when the lock.