EP1621837B1 - Bodenschubladekühlschrank mit Korbhebevorrichtung - Google Patents

Bodenschubladekühlschrank mit Korbhebevorrichtung Download PDF

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Publication number
EP1621837B1
EP1621837B1 EP05008329A EP05008329A EP1621837B1 EP 1621837 B1 EP1621837 B1 EP 1621837B1 EP 05008329 A EP05008329 A EP 05008329A EP 05008329 A EP05008329 A EP 05008329A EP 1621837 B1 EP1621837 B1 EP 1621837B1
Authority
EP
European Patent Office
Prior art keywords
refrigerator
guide
basket
lead screw
lift
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
EP05008329A
Other languages
English (en)
French (fr)
Other versions
EP1621837A2 (de
EP1621837A3 (de
Inventor
Seung-Hwan Oh
Kyung-Han Jeong
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
LG Electronics Inc
Original Assignee
LG Electronics Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by LG Electronics Inc filed Critical LG Electronics Inc
Publication of EP1621837A2 publication Critical patent/EP1621837A2/de
Publication of EP1621837A3 publication Critical patent/EP1621837A3/de
Application granted granted Critical
Publication of EP1621837B1 publication Critical patent/EP1621837B1/de
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D25/00—Charging, supporting, and discharging the articles to be cooled
    • F25D25/02—Charging, supporting, and discharging the articles to be cooled by shelves
    • F25D25/024—Slidable shelves
    • F25D25/025—Drawers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D23/00—General constructional features
    • F25D23/02—Doors; Covers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D25/00—Charging, supporting, and discharging the articles to be cooled
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D25/00—Charging, supporting, and discharging the articles to be cooled
    • F25D25/02—Charging, supporting, and discharging the articles to be cooled by shelves
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
    • A47B2210/00—General construction of drawers, guides and guide devices
    • A47B2210/17—Drawers used in connection with household appliances
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D25/00—Charging, supporting, and discharging the articles to be cooled
    • F25D25/04—Charging, supporting, and discharging the articles to be cooled by conveyors

Definitions

  • the present invention relates to a refrigerator having a basket lift device and more particularly, to a basket lift device capable of making a basket received at a lower portion of a main body lifted to enhance users' convenience.
  • Figure 1 is a perspective view of a refrigerator and Figure 2 is a sectional view of a lower portion of the refrigerator showing how a basket is received in a main body of the refrigerator in accordance with the conventional art.
  • a typical bottom drawer-type refrigerator includes a main body 102 having an opened front side and a receiving space, an upper cooling chamber 106 disposed at an upper portion of the main body 102, having a pair of upper ('French' style side-by-side) doors 104 respectively opening swingably at both sides, for keeping food items stored therein cold, and a lower cooling chamber 112 (e.g. a freezer compartment) disposed at a lower portion of the main body 102, separated by a barrier wall 108 from the upper cooling chamber 106 and having a drawer door 110 opening slidably outwardly.
  • a lower cooling chamber 112 e.g. a freezer compartment
  • a mechanical chamber 116 which includes a compressor 114 and other components for generating cooling air supplied to the upper cooling chamber 106 and the lower cooling chamber 112, is provided at a rear portion of the main body 102.
  • a basket 120 for receiving food items therein is slidably disposed in the lower cooling chamber 112, and the drawer door 110 is fixed at the front side of the basket 120 like a drawer front panel. Accordingly, when the drawer door 110 is pulled out, the basket 120 is thereby opened, and when the drawer door 110 is pushed in, the basket 120 is thereby closed.
  • a guide rail 124 is respectively installed between each of the outer sides of the basket 120 and iner sides of the lower cooling chamber 112 to guide the basket 120 to be slid the inward/outward directions.
  • One or more of drawers 126 for keeping food items therein may be provided above the basket 120 so as to be slidably opened.
  • the conventional bottom drawer-type refrigerator has a problem in that, because the installation position of the basket is too low, a user must lower his/her posture, that is, for example, the user must bend his/her back or crouch down in order to put in or take out the food items, causing users' inconvenience.
  • an object of the present invention is to provide a bottom drawer type refrigerator having a basket lift device capable of enhancing users' convenience by lifting a position of the basket in such a manner that when a basket disposed at a lower portion of a main body of the refrigerator is drawn out, it is lifted upwardly.
  • a bottom drawer refrigerator including: a main body having at least a lower cooling chamber disposed at a lower portion of the main body, a base frame disposed to be moved inwardly and outwardly at the lower cooling chamber and having a drawer door at a front side thereof; a lift frame disposed at an upper surface of the drawer base frame, on which lift frame a basket may be placed, a lead screw disposed vertically at a rear surface of the drawer door; a lift unit provided at a side of the lift frame and movable up and down along the lead screw by clockwise or counterclockwise rotation of the lead screw; and a driving unit for rotating the lead screw clockwise or counterclockwise.
  • a first guide unit for guiding the lift frame to ascend and descend is provided between the lift frame and the drawer door.
  • the first guide unit includes at least one vertical guide bar attached to a rear surface of the drawer door; and at least one guide portion provided at the rear surface of the lift frame and receiving the guide bar such that the guide portion can move vertically along the guide bar.
  • Figure 3 is a frontal perspective view of a refrigerator with a basket opened in accordance with a first embodiment of the present invention
  • Figure 4 is a side view showing a basket lift device of the refrigerator in accordance with the first embodiment of the present invention.
  • a refrigerator implementing the basket lift device of the present invention includes: a main body 10 having a receiving space, an upper cooling chamber 14 disposed at an upper portion of the main body 10 and having a pair of upper (e.g. 'French') swinging doors 12 open at both sides, a lower cooling chamber 18 separated by a barrier wall 16 from the upper cooling chamber 14 and disposed at a lower portion of the main body 10, a basket 20 disposed to be slidable in inward/outward directions at the lower cooling chamber 18 for keeping food items therein, and a lift unit for lifting the basket 20 upward when the basket 20 is drawn out.
  • a main body 10 having a receiving space
  • an upper cooling chamber 14 disposed at an upper portion of the main body 10 and having a pair of upper (e.g. 'French') swinging doors 12 open at both sides
  • a lower cooling chamber 18 separated by a barrier wall 16 from the upper cooling chamber 14 and disposed at a lower portion of the main body 10
  • a basket 20 disposed to be
  • the upper cooling chamber 14 is preferably used as a refrigerating chamber for keeping refrigerated food items
  • the lower cooling chamber 18 is preferably used as a freezing chamber for keeping frozen food items.
  • a drawer door 22 is disposed at a front side of the lower cooling chamber 18 and pushes in or draws out the basket 20 while being moved inwardly/outwardly of the main body 10.
  • a plurality of drawers 24 are optionally disposed at an upper portion of the lower cooling chamber 18, to keep food items, e.g. ice cubes, therein and can be drawn in or out.
  • the drawer door 22 includes a handle 26 at its front side, and includes one or more operation switches 28a and 28b for operating the lift unit.
  • a base frame 30 is mounted, on which the basket 20 is mounted, and a pair of guide rails 32 are installed between the lower cooling chamber 18 and the base frame 30 to guide the base frame 30 inwardly/outwardly of the main body 10.
  • Each guide rail 32 includes a fixed rail 32a fixed at the bottom surface of the lower cooling chamber 18, a middle rail 32b slidably connected with the fixed rail 32a, and a moving rail 32c slidably connected with the middle rail 32b and fixed at the lower surface of the base frame 30.
  • Figure 5 is a rear perspective view of the basket lift device of the refrigerator in accordance with the first embodiment of the present invention
  • Figure 6 is a top plan view of the basket lift device of the refrigerator in accordance with the first embodiment of the present invention.
  • the lift unit includes a lift frame 36, on which the basket 20 is placed, disposed above the base frame 30, a driving unit 38 driving the lift frame 38 up and down, a guide unit guiding the lift frame 36 to be linearly moved up and down, and a control unit controlling the driving unit 32 for lifting the basket 20 when the basket 20 is drawn out.
  • the driving unit 38 includes a rotatable lead screw 40 mounted vertically at a rear surface of the drawer door 22, a lift arm 42 extending forwardly from a vertical riser at a front side of the lift frame 36 and engaged with the lead screw 40 so as to be moved up and down when the lead screw 40 is rotated, and a drive motor 44 connected with a lower end of the lead screw 40 and rotating the lead screw 40 clockwise or counterclockwise when power is applied thereto.
  • An upper end of the lead screw 40 is rotatably supported by an upper support bearing or bushing 46 fixed at the rear surface of the drawer door 22 and a lower end of the lead screw 40 is rotatably supported by a lower support bearing 48 also fixed at the rear surface of the drawer door 22.
  • the guide unit includes at least one guide rod 50 mounted vertically to a rear surface of the drawer door 22, and at least one guide arm 52 extending forwardly from the vertical riser of the lift frame 36 and receiving the guide rod 50 therethrough such that the guide arm 52 can move vertically along the guide rod. Both ends of the guide bar 50 are fixed at the rear surface of the drawer door 22 by respectively fixing brackets 54.
  • a pair of guide rails 56 are fixed vertically at respective sides of the base frame 30, and corresponding guide protrusions 58 are formed at the sides of the lift frame 36 and inserted to be linearly movable in the guide rails 56, for further guiding and supporting vertical movement of the lift frame 36.
  • the control unit includes switches 28a and 28b operated by a user in order to lift the basket 20, a first sensor 60 mounted at an upper portion of the rear surface of the drawer door 22 and sensing when the lift frame 36 located at a maximum lifted position, a second sensor 62 mounted at a lower portion of the rear surface of the drawer door 22 and sensing when the lift frame 36 is located at its bottommost lowered position, and a controller 64 for turning on/off the supply of power applied to the driving motor 44 according to a signal applied from the switches 28a and 28b, the first sensor 60 and the second sensor 62.
  • the switches 28a and 28b are installed at the front surface of the drawer door 22.
  • the user When the lift frame 36 is to be lifted, the user operates the first switch 28a.
  • the lift frame 36 When the lift frame 36 is to be lowered, the user operates the second switch 28b.
  • the first sensor 60 and the second sensor 62 are formed as limit switches or as optical sensors for supplying signals to the controller 64 when the lift frame 36 is lifted up or lowered down.
  • the basket lift device constructed as described above operates as follows.
  • Figure 9 shows an operation state of the basket lift device of the bottom drawer refrigerator in accordance with the first embodiment of the present invention.
  • the user When the user wants to put or take a food item to or out of in the basket 20, the user pulls the drawer door 22 in an outward direction to draw the basket 20 out of the lower cooling chamber 28 and operates the first switch 28a mounted at the front surface of the drawer door 22. Then, a signal is applied from the first switch 28a to the controller 64 and the controller 64 applies power to the driving motor 44 to drive the driving motor 44 in a forward direction (in the direction of lifting the basket.
  • the lift arm 42 engaged with the lead screw 40 is moved up along the lead screw 40, and the lift frame 36 is thereby lifted.
  • the first sensor 60 senses that and applies a corresponding signal to the controller 64, and the controller 64 cuts off power supply to the driving motor 44.
  • the user puts a food item in the basket 20 or takes a food item out of the basket 20 and then operates the second switch 28b. Then, the controller 64 applies power to the driving motor 44 in the opposite direction to drive the driving motor 44 in a reverse direction, according to which, the lead screw 40 is rotated in the opposite direction to lower the lift arm 42 and thereby the lift frame 36.
  • the second sensor 62 senses that and applies a corresponding signal to the controller 64 and the controller cuts off power supply to the driving motor 44.
  • the basket 20 is received in the lower cooling chamber 18.
  • Figure 10 is a perspective view of a basket lift device of the refrigerator in accordance with a second embodiment of the present invention.
  • the basket lift device in accordance with the second embodiment of the present invention has the same basic structure as the basket lift device of the first embodiment, except that the lead screw 40 is operated manually.
  • a square or hexagonal drive protrusion 70 onto which a tool may be inserted, is formed at an upper end of the lead screw 40.
  • a tool namely, a crank handle 72
  • the lead screw 40 is rotated to thereby lift up or lower down the lift frame 36.
  • the refrigerator having the basket lift device has many advantages.
  • the basket lift device is provided for the basket disposed at the lower portion of the refrigerator.
  • the basket can be lifted to allow the user to take a food item out of the basket without having to bend his/her back.
  • users' convenience can be enhanced.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Refrigerator Housings (AREA)

Claims (12)

  1. Kühlschrank mit unterem Schubfach, umfassend:
    einen Hauptkörper (10) mit zumindest einer Kühlkammer (18), die am unteren Abschnitt des Hauptkörpers angeordnet ist, ein Grundgestell (30), das zur Verschiebung nach innen und außen an der unteren Kühlkammer (18) angeordnet ist und eine Schubfachtür (22) an einer Vorderseite davon aufweist;
    ein Hebegestell (36), das über dem Grundgestell (30) angeordnet ist und an dem ein Korb (20) angeordnet ist;
    eine Leitspindel (40), die drehbar vertikal an einer rückwärtigen Fläche der Schubfachtür angeordnet ist;
    einen Hebearm (42), der an einer Vorderseite des Hebegestells (36) vorgesehen ist und sich entlang der Leitspindel nach oben und nach unten verschiebt, wenn die Leitspindel gedreht wird; und
    eine Antriebseinheit (38) zum Drehen der Leitspindel im Uhrzeigersinn oder gegen den Uhrzeigersinn.
  2. Kühlschrank nach Anspruch 1, wobei Führungsschienen (32) zum derartigen Führen des Grundgestells, dass es in den Hauptkörper hinein oder daraus herausgleitet, zwischen dem Grundgestell (30) und der unteren Kühlkammer eingerichtet sind.
  3. Kühlschrank nach Anspruch 1, wobei eine erste Führungseinheit (50) zum Führen des Hebegestells zum Ansteigen oder Ablassen in einer vertikalen Richtung zwischen dem Hebegestell und der Schubfachtür ausgebildet ist.
  4. Kühlschrank nach Anspruch 2, wobei die erste Führungseinheit folgendes umfasst:
    zumindest eine vertikale Führungsstange (50), die an einer rückwärtigen Fläche der Schubfachtür (22) angebracht ist; und
    zumindest einen Führungsarm (52), der an der Vorderseite des Hebegestells vorgesehen ist und die Führungsstange aufnimmt, sodass sich der Führungsarm vertikal entlang der Führungsstange bewegen kann.
  5. Kühlschrank nach Anspruch 1, wobei eine zweite Führungseinheit zwischen dem Hebegestell und dem Grundgestell zum Führen des Hebegestells, das hinauf und hinunter bewegt werden soll, ausgebildet ist.
  6. Kühlschrank nach Anspruch 5, wobei die zweite Führungseinheit folgendes umfasst:
    ein Paar Führungsschienen (56), die jeweils an jeder Seite des Grundgestells (30) befestigt sind; und
    Führungsvorsprünge (58), die an jeder Seite des Hebegestells (36) ausgebildet und linear in den entsprechenden Führungsschienen verschiebbar sind.
  7. Kühlschrank nach Anspruch 1, wobei die Antriebseinheit einen Antriebsmotor (44) umfasst, der mit einem unteren Ende der Leitspindel (40) verbunden ist und die Leitspindel im Uhrzeigersinn oder gegen den Uhrzeigersinn dreht, wenn Leistung daran angelegt ist.
  8. Kühlschrank nach Anspruch 1, wobei die Antriebseinheit folgendes umfasst:
    einen Antriebsvorsprung (70), der an einem oberen Ende der Leitspindel (40) ausgebildet ist; und
    eine Handkurbel (72), die zum Drehen der Leitspindel von Hand mit dem Antriebsvorsprung in Eingriff gebracht ist.
  9. Kühlschrank nach Anspruch 1, ferner umfassend:
    eine Steuereinheit zum Steuern des Anhebens des Korbs durch Steuern der Antriebseinheit, wenn das Grundgestell herausgezogen ist.
  10. Kühlschrank nach Anspruch 9, wobei die Steuereinheit folgendes umfasst:
    Schaltermittel (28) zum Betätigen durch einen Benutzer zum Anheben und Absenken des Korbs (20);
    einen ersten Sensor (60), der an einer Oberseite einer rückwärtigen Fläche der Schubfachtür angebracht ist und einen Maximalhubzustand des Hebegestells abfühlt;
    einen zweiten Sensor (62), der an einer Unterseite der rückwärtigen Fläche der Schubfachtür angebracht ist und einen tiefstabgesenkten Zustand des Hebegestells abfühlt; und
    eine Steuerung (64) zum Anlegen von Leistung an den Antriebsmotor 44 gemäß Signalen, die von den Schaltern und dem ersten und zweiten Sensor zugeleitet sind.
  11. Kühlschrank nach Anspruch 10, wobei die Schaltermittel einen ersten Schalter, der an einer Vorderfläche der Schubfachtür eingerichtet ist und vom Benutzer zum Anheben des Hebegestells betätigt wird, und einen zweiten Schalter umfasst, der ebenfalls an der Vorderfläche der Schubfachtür eingerichtet ist und vom Benutzer zum Absenken des Hebegestells betätigt wird.
  12. Kühlschrank nach Anspruch 10, wobei der erste und zweite Sensor Endschalter oder optische Sensoren sind.
EP05008329A 2004-07-29 2005-04-16 Bodenschubladekühlschrank mit Korbhebevorrichtung Expired - Fee Related EP1621837B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020040059930A KR100652583B1 (ko) 2004-07-29 2004-07-29 바스켓 승강장치를 구비한 냉장고

Publications (3)

Publication Number Publication Date
EP1621837A2 EP1621837A2 (de) 2006-02-01
EP1621837A3 EP1621837A3 (de) 2006-07-26
EP1621837B1 true EP1621837B1 (de) 2008-03-26

Family

ID=35427971

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05008329A Expired - Fee Related EP1621837B1 (de) 2004-07-29 2005-04-16 Bodenschubladekühlschrank mit Korbhebevorrichtung

Country Status (6)

Country Link
US (1) US20060021373A1 (de)
EP (1) EP1621837B1 (de)
KR (1) KR100652583B1 (de)
CN (1) CN100344927C (de)
AU (1) AU2005201538B2 (de)
DE (1) DE602005005571T2 (de)

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CN1727825A (zh) 2006-02-01
DE602005005571D1 (de) 2008-05-08
AU2005201538B2 (en) 2006-11-09
AU2005201538A1 (en) 2006-02-16
EP1621837A2 (de) 2006-02-01
CN100344927C (zh) 2007-10-24
KR20060011224A (ko) 2006-02-03
DE602005005571T2 (de) 2008-07-03
US20060021373A1 (en) 2006-02-02
EP1621837A3 (de) 2006-07-26

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