Refrigerator including multiple storage compartments

• US 9,175,903 B2
• Filed: 01/28/2014
• Issued: 11/03/2015
• Est. Priority Date: 01/04/2010
• Status: Expired due to Fees

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Oh, Seungjin, Lee, Jonghwa, Choi, Changbong, Park, Manho, Lim, Kiyoung
• Primary Examiner(s): Troy, Daniel J
• Assistant Examiner(s): Gallego, Andres F
• Application Number:
  US14/165,847
• Publication Number:
  US 20140139093A1
• Time in Patent Office: 644 Days
• Field of Search: 312/405, 312/321.5, 312/291, 312/292, 312/293.1, 312/293.2, 312/326, 312/328, 312/329, 312/324, 312/204, 312/405.1, 163/65, 163/66, 163/17, 162/84, 49/61, 49/62, 49/63, 49/65, 491/42, 49/98, 491/04, 491/09, 292/197, 292/198
• US Class Current: 1/1
• CPC Class Codes: E05B 65/0042 For refrigerators or cold rooms E05B17/0075 takes precedence; magnetic E05C19/16
• CPC Class Codes: E05D 11/0081 for transmitting energy, e.g. electrical cable routing
• CPC Class Codes: E05D 11/06 Devices for limiting the opening movement of hinges
• CPC Class Codes: E05D 11/1078 the maintaining means acting parallel to the pivot
• CPC Class Codes: E05D 5/00 Construction of single parts, e.g. the parts for attachment
• CPC Class Codes: E05D 7/00 Hinges or pivots of special construction used for special suspension arrangements E05D15/00; so as to be self-closing E05F1/06, E05F1/12; with means for raising wings before being turned E05F7/02
• CPC Class Codes: E05D 7/081 the pivot axis of the wing being situated near one edge of the wing, especially at the top and bottom, e.g. trunnions
• CPC Class Codes: E05F 5/00 Braking devices, e.g. checks; Stops; Buffers construction of pneumatic or liquid braking devices E05F3/00; braking devices, buffers or end stops on drawers for tables, cabinets or like furniture A47B88/473; combined with devices for holding wings open E05C17/00; devices for limiting opening of wings or for holding wings open by a movable member extending between frame and wing E05C17/04
• CPC Class Codes: E05Y 2800/71 Secondary wings, e.g. pass doors
• CPC Class Codes: E05Y 2900/31 for refrigerators
• CPC Class Codes: F25D 23/00 General constructional features F25D21/00 takes precedence
• CPC Class Codes: F25D 23/02 Doors; Covers F25D23/08 takes precedence locks or fastenings E05B65/0042
• CPC Class Codes: F25D 23/025 Secondary closures
• CPC Class Codes: F25D 23/028 Details
• CPC Class Codes: F25D 23/04 with special compartments, e.g. butter conditioners
• CPC Class Codes: F25D 23/085 Breaking strips
• CPC Class Codes: F25D 23/087 Sealing strips
• CPC Class Codes: F25D 2323/024 Door hinges
• CPC Class Codes: F25D 25/027 Rotatable shelves

Abstract

A refrigerator includes a cabinet that defines a first storage compartment, a first door that is opened or closed to allow or prevent access to an interior of the first storage compartment, a storing device coupled to the first door to define a second storage compartment, and a second door connected to the first door that is opened or closed to allow or prevent access to an interior of the second storage compartment. The first door includes a plurality of first coupling parts to which the storing device is coupled. The storing device includes a frame and a basket installed on the frame, each including at least one second coupling part interacting with at least one of the plurality of first coupling parts. A front surface of the second door is positioned to be generally coplanar with at least a portion of a front surface of the first door.

Claims

1. A refrigerator, comprising:

a cabinet;

a first storage area within the cabinet;

a first door having a front surface, a rear surface, an upper surface, a lower surface, a first side surface, and a second side surface, the first door being rotatably connected to the cabinet and configured to open and close at least a portion of the first storage area such that, when the first door is oriented in a closed position, the rear surface of the first door covers a front surface of the cabinet, the first door including;

an access opening, and

a second storage area located at a rear portion of the first door and accessible through the access opening;

a second door having a front surface, a rear surface, an upper surface, a lower surface, a first side surface, and a second side surface, the second door being rotatably connected to the first door and configured to open and close the access opening by rotating in a same direction as a rotation direction of the first door such that, when the second door is oriented in a closed position, the rear surface of the second door covers the front surface of the first door to close the access opening, the second door being thinner than the first door such that, when the first and second doors are oriented in closed positions, a distance between the front surface of the first door and the front surface of the second door is less than a distance between the front surface of the first door and the front surface of the cabinet;

a first hinge connecting the upper surface of the first door to an upper surface of the cabinet and positioned closer to the first side surface of the first door than the second side surface of the first door;

a second hinge connecting the upper surface of the second door to the upper surface of the first door and positioned closer to the first side surface of the second door than the second side surface of the second door;

a hooking member located at one of the first door and the second door;

a locking unit located at the other of the first door and the second door at which the hooking member is not located, the locking unit being configured to confine the hooking member into a confined state and to also release the hooking member from the confined state;

gasket provided on the rear surface of the second door and configured to be compressed to provide a seal between the rear surface of the second door and the front surface of the first door when the second door is in the closed position; and

a limiting member disposed at one of the first door and the second door,

wherein the locking unit is configured to release the hooking member based on a pressing force being applied to the front surface of the second door that is greater than a repulsive force being applied to the second door from the limiting member,

wherein the limiting member is configured to, based on the second door being closed, apply, to the second door, the repulsive force to thereby prevent the hooking member from being released when the first door is rotated to be opened, and

wherein when the second door is in the closed position, the first side surfaces of the first and the second door are substantially coplanar, the second side surfaces of the first and the second door are substantially coplanar, and the upper surfaces of the first and second doors are substantially coplanar.

2. The refrigerator according to claim 1, wherein the hooking member includes a latch hook, and the locking unit includes a latch cam configured to confine the latch hook.

3. The refrigerator according to claim 2, wherein the latch hook is configured to be confined by the latch cam when the second door is pushed toward the first door.

4. The refrigerator according to claim 3, wherein when the latch hook is confined by the latch cam, the latch hook is configured to be released from the latch cam when the second door is pushed toward the first door.

5. The refrigerator according to claim 1, wherein the first door includes:

a first part; and

a second part positioned above the first part, the second part having a thickness that is less than a thickness of the first part,

wherein the access opening is defined at the second part of the first door, and

wherein the second storage area is located at the rear portion of the first door at the second part.

6. The refrigerator according to claim 5, wherein when the second door is oriented in a closed position, the front surface of the second door and a front external surface of the first part of the first door are configured to be coplanar.

7. The refrigerator according to claim 5, further comprising a grip part positioned at an upper end of the first part of the first door.

8. The refrigerator according to claim 1, wherein the limiting member protrudes from the front opening surface of the first door or from the rear surface of the second door.

9. The refrigerator according to claim 8, wherein a protrusion length of the limiting member is smaller than a protrusion length of the gasket.

10. The refrigerator according to claim 1, wherein the limiting member is separate and spaced apart from the hooking member and the locking unit.

11. The refrigerator according to claim 10, wherein the limiting member is disposed vertically below the hooking member and the locking unit.

12. The refrigerator according to claim 1, wherein the limiting member is formed of an elastically deformable material selected from the group consisting of rubber, silicone, and synthetic resin.

13. The refrigerator according to claim 1, wherein when the second door is oriented in a closed position, the repulsive force is greater than inertia force applied by the second door as the first door is rotated to open.

14. The refrigerator according to claim 1, wherein the limiting member is positioned a predetermined distance away from the hooking member or the locking unit.

15. The refrigerator according to claim 1, wherein the upper surface of the first door includes a first stepped portion that is recessed downward from an uppermost surface of the first door, wherein the upper surface of the second door includes a second stepped portion that is recessed downward from an uppermost surface of the second door, and wherein the first hinge and the second hinge are connected, respectively, to the first and second doors at a space that is defined by the first and second stepped portions when the second door is oriented in a closed position.

16. The refrigerator according to claim 1, wherein a diameter of a first hinge shaft of the first hinge is greater than a diameter of a second hinge shaft of the second hinge.

17. The refrigerator according to claim 1, further comprising a third hinge connecting the first door to a lower part of the second door, the third hinge including a member configured to apply elastic force to the second door in a direction that opens the second door.

18. The refrigerator according to claim 1, wherein the limiting member is configured to, based on the second door being closed, apply, to the second door, the repulsive force to thereby prevent the hooking member from being released when the first door is rotated to be opened about an axis that is parallel to a rotation axis of the second door.