Damping hinge, folding mechanism and electronic equipment

The invention discloses a damping hinge, a folding mechanism and electronic equipment. The damping hinge comprises an outer shaft which is hollow; an inner shaft provided with an inner cavity, wherein the inner shaft is rotatably arranged in the outer shaft, an outer cavity is formed between the inner shaft and the outer shaft, liquid is arranged in the outer cavity and the inner cavity, and a through hole suitable for communicating the outer cavity with the inner cavity is formed in the inner shaft; and a piston movably arranged in the inner cavity, wherein the piston is used for blocking or opening the through hole so as to adjust the damping of relative rotation of the outer shaft and the inner shaft. 本申请公开了一种阻尼铰链、折叠机构和电子设备。阻尼铰链包括：外轴，中空设置；内轴，具有内腔，内轴可转动地设于外轴内，内轴与外轴之间形成有外腔，且外腔和内腔中设有液体，内轴上设有适于连通外腔和内腔的通孔；活塞，可活动地设于内腔，其中，活塞用于封堵或开启通孔，以调节外轴和内轴相对转动的阻尼大小。