铰链(英语:hinge),又称合页合叶,是用来连接两个固体,使两者之间可做转动机械装置。铰链可由可移动的组件构成,或者由可折叠的材料构成。最常见的铰链是门窗上安装的铰链。

鎏金铜合页,长陵车站秦手工业作坊遗址出土,咸阳博物馆藏。

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