Lock and tray box

Abstract

The invention provides a lock and a tray box. The lock is used for locking a first component and a second component of the tray box, and the first component and the second component are adjacent. The lock comprises a lock plate, a pin shaft and an elastic part, wherein a hook part is arranged at the upper end of the lock plate, and a through hole is formed below the hook part; one end of the pin shaft penetrates through the through hole and is fixed to the second component; the pin shaft is sleeved with the elastic part, the elastic part is pressed on the lock plate, and the lock plate rotates around the pin shaft to be in a locking state or open state. In the locking state, the hook part is locked with the first component. In the open state, the surface of the lock plate does not protrude out of the outline of the second component. Moreover, under the elastic function of the elastic part, the lock plate is kept in the locking state or the open state. The lock does not protrude out of the outline of the end wall where the lock is located in the open state, so that damage to the part when the end wall is opened or folded is avoided. The lock is simple in structure, low in cost and convenient to operate.

Description

technical field [0001] The invention relates to a lock for a pallet box, in particular to a lock for connecting the top cover and the end wall of the pallet box. Background technique [0002] Pallet boxes generally consist of a chassis, two end walls, two side walls and a top cover. At present, there are many forms of pallet boxes, such as figure 1 , 2 Pallet box shown with half-folding doors. In order to reduce the cost of logistics packaging, the way of adding liner bags to pallet boxes is commonly used to load fluid goods such as liquids, granules or powdery solids. In order to facilitate unloading, a half-fold door 110' is usually set on one end wall of the pallet box and the lower discharge port. The half-fold door 110' is connected with the top cover 200 through a hook lock 300. When installing the liner bag, the operator rotates the hook lock 300, opens the half-fold door 110', and turns it down, then bends down and penetrates into the box, arranges the liner bag...

AI Technical Summary

Problems solved by technology

In actual operation, the hook lock handle is easy to turn over and ride on the lock bracket 310 (see Image 6 ), or, the hook lock handle is not pressed into the limiting space S, but is supported by the limiting part 320 (see Figure 7 ), these two cases will cause the hook lock 300 to stick out of the end wall and protrude from the outer contour of the end wall, so when folding, the hook lock handle supported on the end wall will abut against the folded end wall or side wall, causing damage to the hook lock handle or end wall or side wall parts (see Figure 8 )

Images