Refrigerator

1. A refrigerator comprising:

a cabinet that defines an upper storage space and a lower storage space;

a front panel door part configured to open and close at least a portion of the lower storage space;

a drawer part located rearward of a rear surface of the front panel door part and configured to insert into and withdraw from the lower storage space together with the front panel door part;

an elevation device that is located inside of the drawer part and that is configured to elevate an object stored in the drawer part relative to a bottom surface of the drawer part;

a driving device that is located at the front panel door part and that is configured to provide power for operation of the elevation device;

a power transmission member that is disposed at the drawer part, that is coupled to the elevation device, and that is configured to transmit the power from the driving device; and

a connection device that is movably disposed at the front panel door part and that is configured to detachably couple the driving device to the power transmission member,

wherein the connection device is exposed to a rear side of the front panel door part and configured to be manipulated and moved by a hand of a user, the connection device being detachably connected to an end of the power transmission member that is exposed to a front side of the drawer part, and

wherein the connection device is configured to, based on a manipulation of the connection device by the user, couple and decouple the driving device and the power transmission member in a state in which the front panel door part is coupled to the drawer part.

2. The refrigerator according to claim 1 , wherein the rear surface of the front panel door part defines a recess that accommodates the driving device.

3. The refrigerator according to claim 2 , wherein the front panel door part comprises a door cover that covers the recess and the driving device.

4. The refrigerator according to claim 3 , wherein the door cover defines an opening that exposes a portion of the connection device, the portion being configured to be manipulated and moved by the hand of the user.

5. The refrigerator according to claim 1 , wherein the connection device is covered by the rear surface of the front panel door part, and

wherein the rear surface of the front panel door part has an opening that exposes a portion of the connection device, the portion being configured to be manipulated and moved by the hand of the user.

6. The refrigerator according to claim 1 , wherein the driving device comprises a first connection gear that is disposed in the front panel door part and that is connected to the connection device, and

wherein the connection device further comprises:

a connection device case located at the front panel door part;

a second connection gear that is accommodated in the connection device case and that is coupled to the first connection gear of the driving device, the second connection gear being configured to rotate about an axis of the second connection gear;

a first connection member that extends toward the power transmission member and that is configured to connect to the power transmission member; and

an elastic member that is disposed between the second connection gear and the first connection member.

7. The refrigerator according to claim 6 , wherein the first connection member extends along the axis of the second connection gear and is connected to the second connection gear, the first connection member being configured to rotate together with the second connection gear and selectively couple the driving device to the power transmission member to transmit power from the driving device to the power transmission member, and

wherein the first connection member is further configured to:

insert into the connection device case while compressing the elastic member; and

disconnect from the elevation device in a state in which the first connection member is inserted into the connection device case.

8. The refrigerator according to claim 7 , wherein the connection device includes an exposed portion that is exposed to a space between the rear surface of the front panel door part and a front surface of the drawer part,

wherein the exposed portion comprises a push member that is exposed through the rear surface of the front panel door part and that is configured to be manipulated by the user, and

wherein the push member is connected to the first connection member and is configured to move together with the first connection member based on the push member being manipulated by the user.

9. The refrigerator according to claim 8 , wherein the first connection member is in surface contact with the push member and is configured to insert into the connection device case based on the push member being pushed toward the front panel door part.

10. The refrigerator according to claim 8 , wherein the push member comprises a push part that protrudes toward the drawer part and that is configured to be manipulated by the user, the push part defining a through-hole that faces the drawer part and that receives the first connection member.

11. The refrigerator according to claim 8 , wherein the connection device further comprises a coupling member that is configured to connect the second connection gear to the first connection member and that allows the second connection gear and the first connection member to rotate together with each other, and

wherein the first connection member defines an insertion hole that receives the coupling member, the first connection member being configured to move along the coupling member based on the push member being pushed toward the connection device case.

12. The refrigerator according to claim 11 , wherein the elastic member surrounds the coupling member.

13. The refrigerator according to claim 6 , wherein the first connection member comprises a first connection part that is located at an end of the first connection member and that is configured to connect to the power transmission member,

wherein the first connection part defines an insertion hole that is configured to couple to an end of the power transmission member and that has a shape corresponding to a shape of the end of the power transmission member, and

wherein the first connection part is configured to transfer power from the driving device to the elevation device based on the insertion hole of the first connection part coupling to the end of the elevation device.

14. The refrigerator according to claim 13 , wherein the connection device further comprises a coupling member that passes through the insertion hole of the first connection part and that is configured to connect the first connection member to the second connection gear.

15. The refrigerator according to claim 1 , wherein the connection device comprises:

a connection device case located at the front panel door part;

a connection gear that is accommodated in the connection device case and that is coupled to an end portion of the driving device;

a first connection member that protrudes from the connection device case toward the power transmission member and that is configured to connect to the power transmission member; and

an elastic member that is disposed between the connection gear and the first connection member.

16. The refrigerator according to claim 15 , wherein the driving device comprises:

a driving shaft that is disposed inside of the front panel door part and that extends across the front panel door part; and

a driving gear that is disposed at an end of the driving shaft, that is disposed inside of the connection device case, and that is coupled to the connection gear.

17. The refrigerator according to claim 15 , wherein the connection device further comprises:

a push member that is exposed through the rear surface of the front panel door part and that is configured to be pushed by the user toward the connection device case, and

wherein the push member is connected to the first connection member and is configured to move together with the first connection member.

18. The refrigerator according to claim 17 , wherein the first connection member comprises:

a first connection part that protrudes from the connection device case toward the power transmission member and that is configured to connect to the power transmission member; and

a support part that extends from a circumference of the first connection part and that is in contact with the push member, and

wherein the elastic member is disposed between the connection gear and the support part.

19. The refrigerator according to claim 1 , wherein the power transmission member comprises a pair of rods that extend along lateral side surfaces of the drawer part.

20. The refrigerator according to claim 1 , wherein the driving device comprises a driving shaft that is disposed inside of the front panel door part and that extends across the front panel door part, and

wherein the power transmission member comprises a rod that extends along a lateral side surface of the drawer part in a direction crossing the driving shaft.