Refrigerator

Patent metadata

Field	Value
Publication number	US-9933202-B2
Application number	US-201615015029-A
Country	US
Kind code	B2
Filing date	Feb 3, 2016
Priority date	Feb 3, 2015
Publication date	Apr 3, 2018
Grant date	Apr 3, 2018

Abstract

Disclosed herein is a refrigerator capable of opening a first door with a small force using an auxiliary opening apparatus that decreases an opening force for opening the first door. A refrigerator includes a main body, a first door rotatably provided in the front of the main body and including an opening, a second door rotatably provided in front of the first door and configured to open or close the opening, a first handle coupled to a front surface of the first door and configured to open or close the first door, an auxiliary opening apparatus configured to separate the first door from the main body and decrease an opening force of the first door, a handle lever that is provided at the first handle and configured to operate the auxiliary opening apparatus, and a door cap coupled to an upper portion of the first door.

First claim

What is claimed is:

1. A refrigerator comprising:
a main body including a storage compartment;
a first door rotatably provided in a front of the main body and including an opening;
a second door that is rotatably provided in front of the first door and configured to open or close the opening;
a first handle coupled to a front surface of the first door and configured to open or close the first door;
a second handle provided at the second door and configured to open or close the second door;
an auxiliary opening apparatus configured to separate the first door from the main body and decrease an opening force of the first door;
a handle lever that is provided at the first handle and configured to operate the auxiliary opening apparatus; and
a door cap coupled to an upper portion of the first door, wherein a guide portion configured to guide the auxiliary opening apparatus connected to the handle lever to pass through the first door and contact the main body and is coupled to the door cap,
wherein the auxiliary opening apparatus includes:
a first rack configured to connect to the handle lever and straightly move forward or backward,
a pinion gear configured to engage with the first rack and rotate when the first rack straightly moves, and
a second rack configured to engage with the pinion gear and straightly move in a direction opposite to the first rack when the pinion gear rotates, and

wherein the handle lever includes:
a rotation unit configured to rotatably couple to a handle lever coupling unit;
an insertion portion into which the auxiliary opening apparatus is inserted; and
a push portion to which an external force is applied so that the handle lever rotates about the rotation unit in a direction toward a front surface of the first door.

2. The refrigerator of claim 1 , wherein the first handle includes:
a handle bar;
the handle lever coupling unit provided at the handle bar so that the handle lever is rotatably coupled thereto; and
a handle cap coupled to an upper portion of the handle bar and configured to prevent the auxiliary opening apparatus connected to the handle lever from being exposed to an outside of the refrigerator.

3. The refrigerator of claim 2 , wherein an elastic member is provided between the handle lever and the first handle.

4. The refrigerator of claim 3 , wherein the first rack includes:
an insertion protrusion configured to insert into the insertion portion; and
a first rack gear configured to engage with the pinion gear.

5. The refrigerator of claim 4 , wherein the second rack includes:
a rack gear portion in which a second rack gear is configured to engage with the pinion gear is provided;
a contact portion configured to contact the main body; and
a connection portion that is provided between the rack gear portion and the contact portion and comprises a diameter less than those of the rack gear portion and the contact portion,
wherein a spring is provided on the connection portion.

6. The refrigerator of claim 5 , wherein the pinion gear includes:
a first gear configured to engage with the first rack gear;
a second gear configured to engage with the second rack gear; and
a rotational shaft configured to rotatably couple the pinion gear with the guide portion.

7. The refrigerator of claim 6 , wherein the door cap includes:
an accommodation portion in which a part of the guide portion is accommodated;
a first coupling hole to which the guide portion is coupled;
a cover that is coupled to an upper portion of the guide portion and configured to cover the upper portion of the guide portion; and
a through hole through which the contact portion contacts the main body.

8. The refrigerator of claim 7 , wherein the cover includes:
a first rotational hole to which the rotational shaft is rotatably coupled; and
a second fastening hole that is provided at a position corresponding to a first fastening hole provided in the guide portion and configured to fasten the cover to the guide portion.

9. The refrigerator of claim 8 , wherein the guide portion includes:
an insertion hole into which the first rack is inserted;
a first guide configured to guide the first rack inserted in the insertion hole to straightly move forward or backward;
a second guide configured to guide the second rack to straightly move forward or backward;
an opening that is provided behind the second guide and includes a size less than a diameter of the contact portion and greater than a diameter of the connection portion;
a second rotational hole to which the rotational shaft is rotatably coupled; and
a second coupling hole provided at a position corresponding to the first coupling hole.

10. The refrigerator of claim 9 , wherein:
one side of the spring is supported by a first support portion provided at an edge of the opening;
an other side of the spring is supported by a second support portion provided at the rack gear portion; and
the spring is configured to compress when the second rack moves backward.

11. The refrigerator of claim 10 , wherein when the push portion of the handle lever is pushed in a direction toward the front surface of the first door, the handle lever is rotated in the direction toward the front of the first door, and the first rack inserted into the insertion portion is moved forward.

12. The refrigerator of claim 11 , wherein when the first rack moves forward, the second rack is configured to move backward and compress the spring, and the contact portion is configured to push the main body to separate the first door from the main body.

13. The refrigerator of claim 12 , wherein when an external force applied to the handle lever is released in a state in which the first door separated from the main body is open, the second rack is configured to move forward due to a compressive force of the spring, and the first rack is configured to move backward.

14. A refrigerator comprising:
a main body including a storage compartment;
a first door rotatably provided in a front of the main body and including an opening;
a second door which is rotatably provided in front of the first door and configured to open or close the opening;
an auxiliary opening apparatus configured to separate the first door from the main body and decrease an opening force of the first door;
a handle lever that is provided at a first handle coupled to a front surface of the first door and configured to operate the auxiliary opening apparatus;
a guide portion configured to guide the auxiliary opening apparatus connected to the handle lever to pass through the first door and contact the main body; and
a door cap coupled to an upper portion of the first door and including an accommodation portion in which a part of the guide portion is accommodated, a coupling hole to which the guide portion is coupled, a cover configured to cover an upper portion of the guide portion, and a through hole through which the auxiliary opening apparatus contacts the main body,
wherein the auxiliary opening apparatus includes:
a first rack configured to connect to the handle lever and straightly move forward or backward,
a pinion gear configured to engage with the first rack and rotate when the first rack straightly moves, and
a second rack configured to engage with the pinion gear and straightly move in a direction opposite to the first rack when the pinion gear rotates, and

wherein the handle lever includes:
a rotation unit configured to rotatably couple to a handle lever coupling unit;
an insertion portion into which the auxiliary opening apparatus is inserted; and
a push portion to which an external

Assignees

• Samsung Electronics Co Ltd

Inventors

• Kang Won Soo
• Kyong Yong Soo
• Lee Jea Won
• Lee Jee-Hoon

Classifications

• E05F11/02

  for wings in general, e.g. fanlights (E05F11/36 takes precedence; for windows to be lowered vertically E05F11/38; for doors E05F11/54) · CPC title

• F25D23/025 Primary

  Secondary closures · CPC title

• E05Y2900/31

  for refrigerators · CPC title

• F25D2323/023

  Door in door constructions · CPC title

• F25D23/028

  Details · CPC title