Movable medical case

1. A movable medical case comprising a medical case housing, a medicine box, a tray and drawers, said tray locatable inside said medical case housing when said tray is pushed into said medical case housing, said tray pullable out of said medical case housing, wherein:

said medicine box is separably installed on the tray, said medicine box pullable out and pushable into said medical case housing with said tray,

the drawers are installed inside the medicine box,

the medicine box is installed inside the medical case housing, and

drawer driving devices are installed in the medical case housing, the drawer driving devices pass through the medicine box and are separably connected with the drawers, and drive the drawers to get out of or enter the medical case housing,

wherein a coupling mechanism is installed at the rear end of the drawer, at least one of the drawer driving devices is installed on the side wall inside the medical case housing, comprising a motor, a synchronous belt, two synchronous belt wheels and a coupling rod, the motor is installed in the medical case housing to drive the synchronous belt wheels to rotate so as to drive the synchronous belt to move, and the coupling rod is installed in the synchronous belt and is removably couplable with a coupling mechanism of one of the drawers with which the coupling rod is associated, wherein, when the medical box is placed in the medical case housing, the coupling rod is fixed on the synchronous belt and is connected with the coupling mechanism of said one of the drawers, and wherein, when the drawer driving device separates the coupling rod from the coupling mechanism, the medicine box is removable from the medical case housing.

2. The movable medical case according to claim 1 , wherein an elastic hook is installed on said tray, and a tray lock is installed in said medical case housing, the elastic hook cooperates with tray lock to lock the tray inside medical case housing or unlock it.

3. The movable medical case according to claim 1 , wherein the drawer driving device further comprises a guide rod and a coupling rod fixed mount, the guide rod is fixed in the side wall of the medical case housing, the coupling rod fixed mount comprises a sliding block sheathed on the guide rod and a coupling rod pedestal fixed in the bottom portion of the sliding block, the synchronous belt is clamped between the sliding block and the coupling rod fixed mount, and the coupling rod is fixed in the coupling rod pedestal.

4. The movable medical case according to claim 1 , wherein the coupling mechanism comprises a bracket, a hook plate and a return spring,

the bracket is a plate with a U-shaped cross section, wherein an opening thereof faces towards the rearward of the drawer, and a bottom portion thereof is fixed in the rear end of the drawer,

the hook plate comprises an articulation portion, a connecting portion and a wedged-head portion, the articulation portion is located at the lower portion of the hook plate and is articulated with the lower portion of the bracket,

the connecting portion and the wedged-head portion are located at the top portion of the hook plate, the connecting portion is located at one side close to the bracket, a holding groove is formed between the connecting portion and the wedged-head portion, and the holding groove is matched with the coupling rod, and

the return spring is installed at the top portion inside the bracket, the position of the return spring is corresponding to the position of the connecting portion, one end of the return spring is fixed in the bracket, and the other end is connected with the connecting portion.

5. The movable medical case according to claim 4 , wherein the portion of the holding groove close to the wedged-head portion forms an arc bent towards the inside of the holding groove.

6. The movable medical case according to claim 4 , wherein the transition between the portion of the holding groove close to the wedged-head portion and the top surface of the wedged-head portion is arc transition.