DELIVERY ROBOT

1 . A delivery robot comprising:

a main body configured to be movable with respect to a ground;

a coupling module coupled to one surface of the main body; and

a locking unit coupled to a tray that is configured to be movable,

wherein the coupling module comprises an actuator configured to be driven to be coupled with the locking unit when the coupling module and the tray are located adjacent to each other.

2 . The delivery robot of claim 1 , wherein the main body comprises:

a moving unit including a wheel configured to be movable with respect to the ground;

an extension unit extending in one direction from one end of the moving unit; and

a display unit extending from an end portion of the extension unit at a predetermined angle with respect to the extension unit.

3 . The delivery robot of claim 2 , wherein the moving unit comprises:

a coupling part disposed on an upper surface thereof and through which the coupling module is coupled; and

a TOF camera disposed at a lateral surface thereof and provided in plurality spaced apart from one another along a periphery of the lateral surface.

4 . The delivery robot of claim 3 , wherein the moving unit further comprises:

a first wheel configured to move the main body in a direction in which the extension unit is defined and a direction opposite to the direction in which the extension unit is defined; and

a second wheel configured to be steerable to allow the main body to rotate.

5 . The delivery robot of claim 3 , wherein the moving unit further comprises a main body lidar disposed toward the front and disposed above the TOF camera.

6 . The delivery robot of claim 3 , wherein the extension unit extends perpendicular to the upper surface of the moving unit, and

wherein the extension unit comprises:

a camera part provided at a front surface thereof and including a camera capable of shooting terrain ahead;

a speaker that transmits sound to the outside; and

an engaging part disposed at a rear surface thereof and configured to fix at least one of the coupling module and the tray.

7 . The delivery robot of claim 2 , wherein the display unit comprises:

a display configured to display a state of the main body and output a screen for controlling the main body;

an inclined part configured to support the display; and

an angle adjustment part configured to adjust an angle of the display.

8 . The delivery robot of claim 2 , wherein the coupling module comprises:

a module body coupled to one surface of the main body; and

a docking part provided at an upper surface of the module body in a protruding manner and configured to determine whether or not docking is completed according to proximity of the tray, and

wherein the actuator comprises:

an actuator bar configured to move up when the tray and the coupling module are docked at the docking part; and

a drive part configured to operate the actuator bar.

9 . The delivery robot of claim 8 , wherein the docking part is disposed adjacent to the extension unit,

wherein the actuator bar is disposed in a direction opposite to the extension unit with respect to the docking part, and

wherein the actuator bar is inserted into the module body before the coupling module and the tray are docked.

10 . The delivery robot of claim 9 , wherein the module body is provided with a front groove that is concavely recessed to allow the extension unit to be inserted therein, and

wherein a plurality of module TOF cameras are provided at a lateral surface of the module body to be spaced apart from one another along a periphery of the module body.

11 . The delivery robot of claim 10 , wherein the module body includes a module lidar formed toward the rear thereof and configured to scan a rear side of the main body.

12 . The delivery robot of claim 9 , wherein the upper surface of the module body is equal to or smaller than the upper surface of the moving unit, and

wherein the module body includes rolling pins disposed on the upper surface of the module body in a direction opposite to a direction in which the actuator bar is disposed and configured to be rotatable.

13 . The delivery robot of claim 12 , wherein the locking unit comprises:

a locking part mounted to one end of the tray and in which the actuator bar is inserted; and

a guide part extending from the locking part and having a width greater than a width of the locking part, and

wherein at least a portion of the guide part is guided by the rolling pins.

14 . The delivery robot of claim 13 , wherein the guide part comprises:

first portions extending from the locking part in an inclined manner;

second portions having a width that corresponds to a separation distance between the rolling pins disposed at both sides of the module body and extending in a lengthwise direction of the guide part; and

a third portion connecting the second portions disposed at both sides of the locking part.

15 . The delivery robot of claim 14 , wherein the first portions are guided by the rolling pins when the coupling module approaches the locking part.

16 . The delivery robot of claim 14 , wherein a gap is defined between the coupling module and the second portions.

17 . The delivery robot of claim 14 , wherein the coupling module includes a damper disposed at an upper surface of the coupling module, configured to surround the docking part, and extending along an extension direction of the extension unit.

18 . The delivery robot of claim 17 , wherein the damper includes a damper groove through which the docking part is exposed to the outside and into which the docking part is inserted, and

wherein a front surface of the damper in which the damper groove is defined protrudes more to the actuator than a front surface of the docking part that is exposed to the outside.

19 . The delivery robot of claim 18 , wherein the locking part is provided with a locking groove into which the actuator bar is inserted, and

wherein the actuator bar is disposed to be spaced apart from at least one of front and rear surfaces of the locking groove that define the locking groove.

20 . The delivery robot of claim 19 , wherein a front surface of the locking part is brought into contact with the damper when the tray moves forward relative to the main body as the main body is switched to a stationary state from a moving state.