Locking device for case and cabinet

The utility model provides a locking device for a case and a cabinet, which is characterized in that a lock tongue extending out of the outer plate surface of the case is fixedly arranged on the innerwall plate of the case, and a locking hole matched with the lock tongue is formed in the cabinet; and an operation push rod which extends into a front panel of the case and drags the spring bolt to stretch out and draw back is fixedly arranged on the front panel of the case. A locking mode of the case and the cabinet is clamped and limited by adopting a telescopic clamping mode of a lock tongue structure, and a structure that the lock tongue is dragged to stretch out and draw back in the case by an operating push rod on a front panel of the case is adopted, so that the lock tongue is conveniently opened, a limiting locking structure of the case and the cabinet is reduced, and the disassembly and assembly difficulty of the case and the cabinet is reduced. 本实用新型提供了一种机箱与机柜的锁紧装置，机箱内壁板上固装有伸出其外板面的锁舌，机柜上开设有与锁舌配合的锁紧孔；机箱的