A fitting for movably mounting a furniture part, a door, or a window on a support structure, includes a first fitting part to be connected to the furniture part, the door, or the window, and at least one second fitting part to be connected to the support structure. At least one securing device can secure the first fitting part to the second fitting part. The securing device includes a first component with at least one thread-free section and a threaded section and a second component with at least one mating thread. The thread-free section, the threaded section, and the mating thread are arranged on the two components of the securing device such that the mating thread contacts the thread-free section in a sliding position and is engaged with the threaded section in an engagement position.

A lock apparatus includes a lid configured to turn to open and close an opening of a box; a rod switchable between a locked position where a tip of the rod projects to outside of the lid and an unlocked position where the tip is retracted to inside of the lid; and a guide member attached to the inside of the lid and configured to slidably support the rod. The lid includes one of an engaging portion and an engaged portion, and the guide member includes the other of the engaging portion and the engaged portion. The engaging portion and the engaged portion are configured to move the guide member in a direction intersecting a lid opening and closing direction to thereby fix and press-fit to each other without rattle.

A door driving system can include a first bracket, a second bracket, a hinge portion connecting the first bracket to the second bracket, a driving portion disposed on the first bracket and coupled to the hinge portion, and a connecting portion having one side coupled to the second bracket and the other side connected to the driving portion to support rotation of the first bracket.