A door is a moving structure used to block off, and allow access to, an entrance to or within an enclosed space, such as a building or vehicle. Doors normally consist of a panel that swings on hinges on the edge, but there are also doors that slide or spin inside of a space. Similar exterior structures to doors are called gates. Below are five main types of door mechanism.
1.Hinged doors
Most doors are hinged along one side to allow the door to pivot away from the doorway in one direction, but not the other. The axis of rotation is usually vertical. In some cases, such as hinged garage doors, the axis may be horizontal, above the door opening.
2.Folding doors
A folding door is a type of door which opens by folding back in sections or so-called panels. Folding doors are also known as ‘bi-fold doors', in spite of them most often having more than two panels.
3.Sliding doors
It is often useful to have doors which slide along tracks, often for space or aesthetic considerations.
4.Rotating doors
A rotating door has several wings or leaves, generally four, radiating from a central shaft, forming compartments that rotate about a vertical axis. A revolving door allows people to pass in both directions without colliding, and forms an airlock maintaining a seal between inside and out.
5.Up-and-over doors
Up-and-over or overhead doors are often used in garages. Instead of hinges it has a mechanism, often counterbalanced or sprung, that allows it to be lifted so that it rests horizontally above the opening. A roller shutter or sectional overhead door is one variant of this type.
Know more>> 6 different Types of Sliding Doors.
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