Locking device

The utility model mainly discloses a locking device. The locking device comprises a box body; the baffle covers the front end of the box body; the lock catch piece comprises a rotating block, a fixed column, a handle and a clamping piece, the bottom end of the fixed column is fixed to the baffle, the rotating block is rotationally arranged on the periphery of the fixed column in a sleeving mode, one end of the rotating block is connected with the handle, and the other end of the rotating block is connected with the clamping piece; and the circuit board is clamped on the clamping piece. 本实用新型主要公开了一种锁紧装置，包括：箱体；挡板，盖设于箱体的前端；锁扣件，包括旋转块、固定柱、拉手及夹持件，固定柱底端固定于挡板上，旋转块旋转套设于固定柱外围，旋转块的一端与拉手连接，旋转块的另一端与夹持件连接；电路板，夹持于夹持件。