| 摘要 |
PROBLEM TO BE SOLVED: To provide a hinge capable of realizing a closed state from a half-open state only by the hinge without depending upon a door checker or the like in order to avoid the half opening of a door which damages the effect of air conditioning and often caused trouble. SOLUTION: In the hinge in which an upper hinge 1 and a lower hinge 2 are connected by pins 3, the V-shaped hinge has a structure in which corrugated undersides 1-3 are formed to the underside of an upper cylinder 1-2 and the top face of a lower cylinder 2-2 as the rotary sliding surfaces of the hinge respectively and a corrugated top face 2-3 to the lower cylinder 2-2 and the hinge is opened and closed by its own force by door own weight or the like until the crests and valley of the wave forms reach angles where the crest and valley are fitted mutually when the hinge is opened and closed gradually, and stopped at the fitted angles.
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