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thumbnail A swing is a hanging seat, often found at playgrounds for children, a circus for acrobats, or on a porch for relaxing, although they may also be items of indoor furniture, such as the Indian oonjal. The seat of a swing may be suspended from chains or ropes. Once a swing is in motion it continues to oscillate like a pendulum until external interference or drag brings it to a halt. Swing sets are very popular with children. On playgrounds, several swings are often suspended from the same metal or wooden frame, known as a swing set, allowing more than one child to play at a time. Such swings come in a variety of sizes and shapes. For infants and toddlers, swings with leg holes support the child in an upright position while a parent or sibling pushes the child to get a swinging motion. Some swing sets include play items other than swings, such as a rope ladder or sliding pole. For older children, swings are sometimes made of a flexible canvas seat, of rubberized ventilated tire tread, of plastic, or of wood. A common backyard sight is a wooden plank suspended on both sides by ropes from a tree branch. ==Types of swings== Tire swings are a form of swing made from a whole tire. These are often simply a new or used tire hanging from a tree on a rope. On commercially-developed playground swing sets, oversized new tires are often reinforced with a circular metal bar to improve safety and are hung on chains from metal or wooden beams. They may hang vertically or hang flat, suspended from three or more points on one side. The flat version can hold three or more children. Pumping is achieved by using one or two of the three chains attached to the swing, and two (or more) children can pump in turn.〔(''Tire swings - Information'' ) 〕 Tire swings can also be used in ''spinners'', where the occupants use their feet to propel the tire. Natural swings may be created by lianas (creeper plants) in a subtropical wild forest like Aokigahara forest near Mount Fuji. Rope swings are swings created by tying one end of a length of rope to a tree branch, bridge, or other elevated structure. A knot or loop is usually put on the other end to prevent fraying and help the swinger stay on. Rope swings are often situated so that those swinging on them can let go and land in water deep enough to cushion the fall and to be swum around in. The incorporation of a short board such as a skateboard in which the rider stands is called swing boarding. It is made safer by the use of an attached board and a harness for the rider. Toddler swings are swings with a bucket shape with holes for the child's legs, or a half-bucket shape and a safety belt, that is intended to reduce the likelihood of a very young child from falling out. Porch swing is a swinging, conventionally painted wood, bench-like seat intended primarily for adults. The swing's suspension chains are permanently mounted to the porch ceiling; and the seat is typically large enough to seat about three people, with an armrest at each end. Porch swings are an alternative to using rocking chairs or gliders outdoors. Canopy swing is similar to a porch swing, but it is hung on a separate frame and is usually portable. The name is derived from a canopy installed as a sun shade. Kiiking is a sport played in Estonia wherein players attempt to rotate 360 degrees around a spindle, on a long swing consisting of a seat hung with steel bars - instead of with ropes or chains. Hammock swing is a portable (removable) bed-swing made of lightweight material such as canvas, netting (or as little as two ropes), typically suspended between two trees or attached to a hammock stand. File:Keemu sadam 2.JPG|Estonian traditional swing File:Hws.jpg|Canopy swing File:Lord Laitinen and Patricia, September 2011.jpg|Two people on a canopy swing File:Kiiking.jpg|Kiiking swing File:Rope swing really tall Summit NJ.jpg|Rope swing File:Three Boys on a Tire Swing.JPG|Three boys are on a tire swing File:Schaukel aus Reifen.jpg|Swing made out of tires in East Timor File:Partschins-Naturns-7425-Bearbeitet.jpg|Fresco of St Proculus on a swing, 7th century, South Tyrol File:NORTHERN CALIFORNIA - NARA - 543093.jpg|Tire swing in motion 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Swing (seat)」の詳細全文を読む スポンサード リンク
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