KR101339924B1 - Door opening device and refrigerator having the same - Google Patents
Door opening device and refrigerator having the same Download PDFInfo
- Publication number
- KR101339924B1 KR101339924B1 KR1020070106383A KR20070106383A KR101339924B1 KR 101339924 B1 KR101339924 B1 KR 101339924B1 KR 1020070106383 A KR1020070106383 A KR 1020070106383A KR 20070106383 A KR20070106383 A KR 20070106383A KR 101339924 B1 KR101339924 B1 KR 101339924B1
- Authority
- KR
- South Korea
- Prior art keywords
- door
- operating member
- extension
- rotation
- rotating
- Prior art date
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Abstract
Disclosed are a door opening device and a refrigerator having the same, which can reduce the number of operations of a driving motor for opening a door, extend the life of the driving motor and related parts, and can quickly open the door. The door opening device includes an actuating member for selectively opening both doors by rotation in selectively opening the first door and the second door; A rotating cam having a plurality of protrusions for rotating the operating member in contact with the operating member and a plurality of spacers spaced apart from the operating member, the rotating cams being alternately disposed in the rotation direction; A drive motor for rotating the rotary cam in the forward and reverse directions; And a restoring device for repositioning the actuating member after the opening of at least one of the two doors, the actuating member each having a first extension extending from the center of rotation to the rotary cam and in both directions intersecting the first extension from the center of rotation. An extended second and third extension portion, a first pressing rod rotatably coupled to the second extension portion by the first connecting shaft and extending toward the inner surface of the first door, and a third extension portion by the second connecting shaft And a second pressurized rod rotatably coupled to the second door and extending toward an inner surface of the second door.
Description
The present invention relates to a door opening device and a refrigerator having the same, and more particularly, to a door opening device and a refrigerator having the same so that the door can be easily opened.
In general, a large refrigerator requires a large force to open the door because the door to open and close the storage compartment is large. Not only is the door weight heavy, but also the pressure drop between the inside and outside of the storage room due to the temperature drop in the storage room when it is operating. Therefore, in recent years, such a refrigerator has been installed in the door opening device to open the door by pushing in the direction of opening the door to open the door.
Korean Laid-Open Patent Publication No. 2006-40436 discloses a double door refrigerator having a door opening device. The refrigerator has storage compartments which are mutually divided on both sides, and has a left door and a right door for opening and closing each storage compartment.
The door opening device of the refrigerator includes a drive motor for forward rotation and reverse rotation, and a main cam rotated by the drive motor. A first sub cam for rotating the left door while rotating by the operation of the main cam and a second sub cam for opening the right door while rotating by the operation of the main cam are provided. The first sub cam is pushed by the main cam when the main cam rotates clockwise to rotate the left door, and the second sub cam is pushed by the main cam when the main cam rotates counterclockwise to rotate the right door. Open.
In the aforementioned door opening device of the refrigerator, the driving motor rotates in the first direction when the door is opened, and the main motor is operated after the opening of the door by rotating the driving motor in the second direction (reverse direction). Return to position That is, in order to open one door, the drive motor had to rotate in the first direction and then rotate in the second direction, so the drive motor had to operate twice. Therefore, the door opening device has a frequent operation of the drive motor, the life of the drive motor and the relay for controlling it could be shortened.
After opening one door and subsequently opening the other door, the driving motor rotates in the first direction to open one door, reversely rotates in the second direction to return to the original position, and then the other door. And further rotating in the second direction to open, and rotating in the first direction to return to the original position. When opening the two doors as described above, there was a problem in that the frequency of operation of the driving motor was frequent and the opening of the door was delayed.
The present invention is to solve the above problems, an object of the present invention to provide a door opening device and a refrigerator having the same to reduce the number of operation of the drive motor for opening the door to extend the life of the drive motor and related parts. It is.
Another object of the present invention is to provide a door opening device and a refrigerator having the same so that the door can be quickly opened.
According to an aspect of the present invention, there is provided a door opening device comprising: an actuating member for selectively opening the two doors by rotation in selectively opening the first door and the second door; A rotating cam having a plurality of protrusions for rotating the operating member in contact with the operating member and a plurality of spacers spaced apart from the operating member, wherein the protrusion and the spacer are alternately disposed in a rotational direction; A drive motor for rotating the rotary cam in a forward direction and a reverse direction; And a restoring device for repositioning the actuating member after the opening of at least one of the two doors, wherein the actuating member intersects the first extension extending from the center of rotation to the rotary cam and the first extension from the center of rotation. Second and third extension portions extending in both directions, the first pressure rods rotatably coupled to the second extension portion by a first connecting shaft and extending toward an inner surface of the first door, and a second connection portion. And a second pressing rod rotatably coupled to the third extension part by a shaft and extending toward an inner surface of the second door.
The first and second connecting shafts are spaced apart from the rotation center of the operating member, and are disposed in a position biased toward an end portion of the first extension part which contacts the rotary cam as compared with the rotation center of the operating member.
The actuating member is characterized in that the length of the first extension is longer than the length of the second and third extension.
In addition, the door opening device according to the present invention and the operation member for opening the door by rotation; A rotating cam having a plurality of protrusions for rotating the operating member in contact with the operating member and a plurality of spaced portions spaced apart from the operating member, wherein the protrusions and the spaced apart portions are alternately disposed along the rotational direction; A drive motor for rotating the rotary cam; And a restoring device for repositioning the actuating member after the door is opened, the actuating member extending toward a side of the first cam extending from the center of rotation and toward the side of the first cam from the center of rotation. It includes an extended second extension portion, and a pressing rod rotatably coupled to the second extension portion by a connecting shaft extending toward the inner surface of the door.
In addition, the refrigerator according to the present invention selectively includes a main body having a first storage compartment and a second storage compartment partitioned with each other, first and second doors that open and close the first and second storage compartments, and the first and second doors, respectively. And a door opening device for opening the door, wherein the door opening device comprises: an operation member for selectively opening the two doors by rotation; A rotating cam having a plurality of protrusions for rotating the operating member in contact with the operating member and a plurality of spacers spaced apart from the operating member, wherein the protrusion and the spacer are alternately disposed in a rotational direction; A drive motor for rotating the rotary cam in a forward direction and a reverse direction; And a restoring device for repositioning the actuating member after opening of at least one of the two doors, wherein the actuating member intersects the first extension extending from the center of rotation to the rotary cam and the first extension from the center of rotation. Second and third extension portions extending in both directions, the first pressure rods rotatably coupled to the second extension portion by a first connecting shaft and extending toward an inner surface of the first door, and a second connection portion. And a second pressing rod rotatably coupled to the third extension part by a shaft and extending toward an inner surface of the second door.
The door opening device according to the present invention can open the door only by the operation of the drive motor rotates a predetermined section in one direction, and after the door is opened, it becomes the initial state even if the drive motor does not operate in the reverse direction, thereby minimizing the operation of the drive motor. have. Therefore, there is an effect that can extend the life of the drive motor and related parts.
In addition, the door opening device according to the present invention, even when the first door and the second door is continuously opened, the drive motor rotates in the clockwise direction and then rotates counterclockwise again. Not only can significantly reduce the effect of opening the two doors quickly.
In addition, the door opening device according to the present invention is a method of pressing the inner surface of the door while the first and second pressure rods retreat by the rotation of the operating member, so that the door can be easily opened by the door opening device. It can be effective.
Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.
1 illustrates a refrigerator to which a door opening device according to the present invention is applied. The refrigerator includes a
The
2 to 6 show a door opening apparatus according to the first embodiment. As shown in FIGS. 2 and 3, the
The
The
The
As shown in FIG. 3, the actuating
As shown in FIG. 3, the first to
The
The
The
In this way, since the elasticity of the
At the center of rotation of the
The rotary oil damper has a
As illustrated in FIG. 1, the
Next, the operation of the
As shown in FIG. 3, the driving
As shown in FIG. 4, when the user grabs or pulls the
Thus, the
As shown in FIG. 6, when the user grabs or pulls the
Even when the
10 illustrates a refrigerator to which a door opening device according to a second embodiment of the present invention is applied. The second embodiment is a refrigerator having one
1 is a perspective view showing a refrigerator to which a door opening device according to the present invention is applied.
2 is an exploded perspective view of the door opening apparatus according to the first embodiment of the present invention.
3 is a plan view of the refrigerator to which the door opening device according to the first embodiment of the present invention is applied, and shows a state in which the door is closed.
4 is a plan view of the refrigerator to which the door opening device according to the first embodiment of the present invention is applied, and shows a state in which the first door is opened by the door opening device.
5 is a plan view of the refrigerator to which the door opening device is applied according to the first embodiment of the present invention, and shows an operation of returning the operation member of the door opening device to an initial position.
6 is a plan view of the refrigerator to which the door opening device according to the first embodiment of the present invention is applied and shows a state in which the second door is opened by the door opening device.
FIG. 7 is a cross-sectional view taken along the line VII-VII 'of FIG. 3.
FIG. 8 is a cross-sectional view taken along the line VII-VII 'of FIG. 3.
9 is a cross-sectional view taken along line IX-IX 'of Fig.
10 is a plan view of the refrigerator to which the door opening device according to the second embodiment of the present invention is applied.
Explanation of symbols on the main parts of the drawings
10: main body, 11: first door,
12: second door, 20: door opening device,
21: upper cover, 24: support shaft,
25: return spring, 30: operating member,
31: the first extension, 32: the second extension,
33: third extension, 34: first connecting shaft,
35: second connecting shaft, 36: first pressing rod,
37: second pressure rod, 38: roller,
40: rotary cam, 41: protrusion,
42: spacing, 43: magnet,
44: detection sensor, 50: drive motor,
60: rotation resistance unit.
Claims (9)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020070106383A KR101339924B1 (en) | 2007-10-23 | 2007-10-23 | Door opening device and refrigerator having the same |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020070106383A KR101339924B1 (en) | 2007-10-23 | 2007-10-23 | Door opening device and refrigerator having the same |
Publications (2)
Publication Number | Publication Date |
---|---|
KR20090040949A KR20090040949A (en) | 2009-04-28 |
KR101339924B1 true KR101339924B1 (en) | 2013-12-10 |
Family
ID=40764154
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1020070106383A KR101339924B1 (en) | 2007-10-23 | 2007-10-23 | Door opening device and refrigerator having the same |
Country Status (1)
Country | Link |
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KR (1) | KR101339924B1 (en) |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR970002224A (en) * | 1995-06-16 | 1997-01-24 | 배순훈 | Refrigerator door automatic opening device |
KR100621700B1 (en) | 2003-01-21 | 2006-09-07 | 삼성전자주식회사 | Refrigerator with ice feeding device |
KR100675795B1 (en) | 2004-11-05 | 2007-02-02 | 삼성전자주식회사 | A side-by-side type refrigerator and door opening method for the side-by-side type refrigerator |
-
2007
- 2007-10-23 KR KR1020070106383A patent/KR101339924B1/en not_active IP Right Cessation
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR970002224A (en) * | 1995-06-16 | 1997-01-24 | 배순훈 | Refrigerator door automatic opening device |
KR100621700B1 (en) | 2003-01-21 | 2006-09-07 | 삼성전자주식회사 | Refrigerator with ice feeding device |
KR100675795B1 (en) | 2004-11-05 | 2007-02-02 | 삼성전자주식회사 | A side-by-side type refrigerator and door opening method for the side-by-side type refrigerator |
Also Published As
Publication number | Publication date |
---|---|
KR20090040949A (en) | 2009-04-28 |
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