Door apparatus of refrigerator and damping apparatus of the same
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
A47B-096/04
출원번호
US-0445560
(2007-10-30)
등록번호
US-8186782
(2012-05-29)
우선권정보
KR-10-2006-0105781 (2006-10-30)
국제출원번호
PCT/KR2007/005390
(2007-10-30)
§371/§102 date
20090414
(20090414)
국제공개번호
WO2008/054115
(2008-05-08)
발명자
/ 주소
Choi, Chang-Bong
출원인 / 주소
LG Electronics Inc.
대리인 / 주소
Birch, Stewart, Kolasch & Birch, LLP
인용정보
피인용 횟수 :
4인용 특허 :
11
초록▼
Disclosed are a door apparatus for a refrigerator and a damping apparatus for the same. The door apparatus for the refrigerator comprises: a main door for opening/closing the interior of a refrigerator, a sub-door for opening/closing the interior of the refrigerator through a portion of the main doo
Disclosed are a door apparatus for a refrigerator and a damping apparatus for the same. The door apparatus for the refrigerator comprises: a main door for opening/closing the interior of a refrigerator, a sub-door for opening/closing the interior of the refrigerator through a portion of the main door, a sub-door frame disposed on the main door and supporting the sub-door, and a damper disposed at the sub-door frame to reduce an impact due to the pivotal movement of the sub-door. With a damping force required when the door is opened/closed and a more simplified structure of the door, a door design of higher tightness can be implemented.
대표청구항▼
1. A door apparatus for a refrigerator, comprising: a main door for opening/closing an interior of a refrigerator;a sub-door for opening/closing the interior of the refrigerator through a portion of the main door;a sub-door frame disposed on the main door for supporting the sub-door;a damper pressur
1. A door apparatus for a refrigerator, comprising: a main door for opening/closing an interior of a refrigerator;a sub-door for opening/closing the interior of the refrigerator through a portion of the main door;a sub-door frame disposed on the main door for supporting the sub-door;a damper pressurizing unit disposed at the sub-door; anda damper positioned at the sub-door frame and pressurized by the damper pressurizing unit as the sub-door performs a pivotal movement so as to reduce an impact according to the pivotal movement of the sub-door,wherein the sub-door is pivoted centering around a hinge shaft by being coupled to the sub-door frame by a hinge, and the damper pressurizing unit is disposed below the sub-door centering around the hinge shaft,wherein the damper includes a damper body, an elastic member disposed inside the damper body, and a pressurized member elastically supported by the elastic member and pressurized by the damper pressurizing unit,wherein the damper pressurizing unit includes an inner-side damper pressurizing unit facing the interior of the refrigerator and a lower-side damper pressurizing unit extending from the inner-side damper pressurizing unit and facing downward when the sub-door is closed,wherein the damper is spaced from the sub-door when the sub-door is closed, and one end of the damper contacts the sub-door when the sub-door is opened, andwherein the damper is disposed at the sub-door frame while the pressurized member is vertically oriented in a downward direction. 2. The apparatus of claim 1, wherein the damper pressurizing unit is disposed on a rear surface of the sub-door. 3. The apparatus of claim 1, wherein if the sub-door is pivoted to open a portion of the main door, the damper pressurizing unit moves toward an inside of the main door. 4. The apparatus of claim 1, wherein the damper is pressurized by the damper pressurizing unit in a tangential direction on a circumference of a certain radius centering around the shaft of the hinge. 5. The apparatus of claim 1, wherein a head portion of the pressurized member contacting the damper pressurizing unit is formed relatively larger than other portions thereof. 6. The apparatus of claim 1, further comprising: a damper mounting unit disposed on the sub-door frame so as to install the damper thereon. 7. The apparatus of claim 6, wherein the damper mounting unit includes a damper insertion hole disposed in the sub-door frame. 8. The apparatus of claim 7, wherein the damper insertion hole is formed in a direction corresponding to a pivotal direction of the damper. 9. The apparatus of claim 6, wherein the damper mounting unit is disposed at a lower portion of the sub-door frame. 10. The apparatus of claim 6, wherein at least two damper mounting units are disposed in locations corresponding to both sides of the sub-door frame. 11. The apparatus of claim 6, wherein the damper mounting unit includes a fixing member for fixing the damper to the sub-door frame. 12. A door apparatus for a refrigerator, comprising: a main door for opening/closing an interior of a refrigerator;a sub-door frame disposed on the main door and having a damper installing unit;a sub-door pivotally mounted at the sub-door frame so as to open/close the interior of the refrigerator through a portion of the main door;a damper pressurizing unit disposed at the sub-door; anda damper disposed at the damper mounting unit on a pivotal path of the sub-door and pressurized by the damper pressurizing unit as the sub-door performs a pivotal movement so as to reduce an impact due to the pivotal movement of the sub-door,wherein the sub-door is pivoted centering around a hinge shaft by being coupled to the sub-door frame by a hinge, and the damper pressurizing unit is disposed below the sub-door centering around the hinge shaft,wherein the damper includes a damper body, an elastic member disposed inside the damper body, and a pressurized member elastically supported by the elastic member and pressurized by the damper pressurizing unit,wherein the damper pressurizing unit includes an inner-side damper pressurizing unit facing the interior of the refrigerator and a lower-side damper pressurizing unit extending from the inner-side damper pressurizing unit and facing downward when the sub-door is closed,wherein the damper is spaced from the sub-door when the sub-door is closed, and one end of the damper contacts the sub-door when the sub-door is opened, andwherein the damper is disposed at the sub-door frame while the pressurized member is vertically oriented in a downward direction.
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