noun
opening/closing device; mechanical opener/closer
Refers to a mechanical device that opens and closes something, such as shutters, gates, or windows. Often used in technical or product contexts.
このシャッターには自動開閉機が付いています。
This shutter is equipped with an automatic opening/closing device.
窓の開閉機が故障して動かない。
The window opener/closer is broken and won't move.
noun
railway crossing gate; barrier
Rare term for a railway crossing gate. The more common word is 遮断機 (しゃだんき).
See also: 遮断機
古い資料では踏切の開閉機という表現が見られる。
In old documents, the term 開閉機 can be found referring to a railway crossing gate.