EP2148035B1 - Drive device for refrigerator doors - Google Patents

Drive device for refrigerator doors Download PDF

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Publication number
EP2148035B1
EP2148035B1 EP09008179.5A EP09008179A EP2148035B1 EP 2148035 B1 EP2148035 B1 EP 2148035B1 EP 09008179 A EP09008179 A EP 09008179A EP 2148035 B1 EP2148035 B1 EP 2148035B1
Authority
EP
European Patent Office
Prior art keywords
door
rack
drive device
pawl
assembly according
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.)
Not-in-force
Application number
EP09008179.5A
Other languages
German (de)
French (fr)
Other versions
EP2148035B8 (en
EP2148035A3 (en
EP2148035A2 (en
Inventor
Josef Hecht
Dietmar Blersch
Armin Pfister
Florian Stephan
Jens Scharf
Markus Kegel
Herbert Müller
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.)
Liebherr Hausgeraete Ochsenhausen GmbH
Original Assignee
Liebherr Hausgeraete Ochsenhausen GmbH
Suspa GmbH
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 Liebherr Hausgeraete Ochsenhausen GmbH, Suspa GmbH filed Critical Liebherr Hausgeraete Ochsenhausen GmbH
Publication of EP2148035A2 publication Critical patent/EP2148035A2/en
Publication of EP2148035A3 publication Critical patent/EP2148035A3/en
Application granted granted Critical
Publication of EP2148035B1 publication Critical patent/EP2148035B1/en
Publication of EP2148035B8 publication Critical patent/EP2148035B8/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05F15/00—Power-operated mechanisms for wings
    • E05F15/60—Power-operated mechanisms for wings using electrical actuators
    • E05F15/603—Power-operated mechanisms for wings using electrical actuators using rotary electromotors
    • E05F15/611—Power-operated mechanisms for wings using electrical actuators using rotary electromotors for swinging wings
    • E05F15/63—Power-operated mechanisms for wings using electrical actuators using rotary electromotors for swinging wings operated by swinging arms
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05F15/00—Power-operated mechanisms for wings
    • E05F15/60—Power-operated mechanisms for wings using electrical actuators
    • E05F15/603—Power-operated mechanisms for wings using electrical actuators using rotary electromotors
    • E05F15/611—Power-operated mechanisms for wings using electrical actuators using rotary electromotors for swinging wings
    • E05F15/616—Power-operated mechanisms for wings using electrical actuators using rotary electromotors for swinging wings operated by push-pull mechanisms
    • E05F15/619—Power-operated mechanisms for wings using electrical actuators using rotary electromotors for swinging wings operated by push-pull mechanisms using flexible or rigid rack-and-pinion arrangements
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05F15/00—Power-operated mechanisms for wings
    • E05F15/60—Power-operated mechanisms for wings using electrical actuators
    • E05F15/603—Power-operated mechanisms for wings using electrical actuators using rotary electromotors
    • E05F15/611—Power-operated mechanisms for wings using electrical actuators using rotary electromotors for swinging wings
    • E05F15/627—Power-operated mechanisms for wings using electrical actuators using rotary electromotors for swinging wings operated by flexible elongated pulling elements, e.g. belts, chains or cables
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME RELATING TO HINGES OR OTHER SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS AND DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION, CHECKS FOR WINGS AND WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05Y2400/00—Electronic control; Power supply; Power or signal transmission; User interfaces
    • E05Y2400/10—Electronic control
    • E05Y2400/30—Electronic control of motors
    • E05Y2400/32—Position control, detection or monitoring
    • E05Y2400/322—Position control, detection or monitoring by using absolute position sensors
    • E05Y2400/326—Position control, detection or monitoring by using absolute position sensors of the angular type
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME RELATING TO HINGES OR OTHER SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS AND DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION, CHECKS FOR WINGS AND WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05Y2800/00—Details, accessories and auxiliary operations not otherwise provided for
    • E05Y2800/10—Additional functions
    • E05Y2800/11—Manual wing operation
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME RELATING TO HINGES OR OTHER SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS AND DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION, CHECKS FOR WINGS AND WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05Y2900/00—Application of doors, windows, wings or fittings thereof
    • E05Y2900/30—Application of doors, windows, wings or fittings thereof for domestic appliances
    • E05Y2900/31—Application of doors, windows, wings or fittings thereof for domestic appliances for refrigerators
    • 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
    • F25D23/028—Details
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/19—Gearing
    • Y10T74/19642—Directly cooperating gears
    • Y10T74/1967—Rack and pinion

Definitions

  • the invention relates to an arrangement of a housing, a door hinged thereto and a drive means for pivoting the door relative to the housing.
  • Automatic drives are for example from the WO 2007/009783 A1 , from the US 3,653,154 and from the US 2005/0262868 A1 known and can simplify the opening of a door.
  • a particularly high initial force must be overcome in order to overcome a negative pressure which forms inside the refrigerator when the door is closed.
  • the door can also be opened manually without damaging the drive device. This generally requires a complicated mechanism.
  • the invention is therefore based on the object to improve a drive device for refrigerator doors.
  • the inventive arrangement comprises a in the figures only schematically illustrated housing 1, in particular a refrigerator and / or freezer, a hinged to the housing 1 via a hinge 3 about a pivot axis 2 hinged door 4 and a drive means 5 for pivoting the Door 4 relative to the housing 1. Furthermore, a sealing element 6 is provided, which in the closed state of the door 4 sealingly abuts between this and the housing 1, so that the housing 1 by means of the door 4 airtight to the outside is lockable.
  • the door 4 is mirror-symmetrical to a central plane 7, which runs parallel to the pivot axis 2, is formed.
  • the hinge 3 is thus optionally mounted on one or the other side of the central plane 7.
  • the opening direction of the door 4 is thus freely selectable.
  • the hinge 3 comprises a first leg 8, which is articulated by means of a first hinge 10 on the door 4, and a second leg 9, which is articulated by means of a second hinge 11 on the housing 1.
  • the second joint 11 is fastened to the housing 1 by means of a holding plate 15.
  • the two legs 8, 9 are in turn pivotally connected to each other via a third joint 12.
  • a rack 14 is articulated by means of a fourth joint 13 on the first leg 8.
  • the joints 10, 11, 12, 13 each allow a pivoting about an axis parallel to the pivot axis. 2
  • the first hinge 10 is arranged at a distance from the pivot axis 2.
  • the first leg 8 is L-shaped. This allows a particularly space-saving, compact design of the hinge 3.
  • it is provided to provide a plurality of alternative positions for the arrangement of the fourth joint 13 for the articulation of the rack 14 on the first leg 8. In this way, the lever ratios of the hinge 3, in particular the interaction of the rack 14 of the drive device 5 with the hinge 3 can be adapted to the respective requirements.
  • hinges 3 are integrated in the door 4.
  • the hinges 3 are integrated in the door 4.
  • recesses are provided in the door, wherein the recesses are arranged outside a sealing region of the housing 1 and thus thermally insulated from an inner region of the housing 1.
  • the hinge 3 is multi-part, in particular multi-axially formed. It comprises at least three, in particular at least 4 pivot axes. For a particularly advantageous embodiment of the hinge 3 is on the DE 10 2006 019 332 A1 directed.
  • the rack 14 is formed in two parts. It comprises a first part 16 connected via the fourth joint 13 to the first leg 8 of the hinge 3 and a second part 17 connected to the first part 16.
  • the two parts 16, 17 are linearly offset from each other by a predetermined distance displaceable.
  • an elongated hole-shaped recess 18 is provided in the second part 17, in which engages a pin 16 arranged on the first part 16.
  • the displaceability of the two parts 16, 17 against each other is thus limited by the displaceability of the pin 19 in the recess 18.
  • the second part 17 has a plurality of teeth 20, which are in engagement with a gear 21 of a transmission 22.
  • the gear 21 of the transmission 22 is rotatably driven about a drive axis 23 of a drive unit 60, in particular an electric motor, shown only schematically in the figures.
  • a clutch is provided in the transmission 22.
  • the coupling is used to overload protection of the drive device 5, for example, when manually opening the door 4, or if this jammed in an unforeseen way.
  • the coupling is electromagnetically or mechanically formed. By means of an electromagnetic clutch, the drive device 5 can be switched on and off in a particularly simple manner. This allows you to switch between manual and automatic operation.
  • the opener 24 On the pivot axis 2 with respect to the center plane 7 opposite side of the door 4, an opener 24 is provided.
  • the opener 24 includes an L-shaped pawl 25 which is pivotable about a pawl pivot axis 27.
  • the pawl pivot axis 27 is part of a pawl hinge 28, which is fastened by means of a second retaining plate 26 to the door 4.
  • the pawl-joint 28 has a formed in particular as a spring return element for automatically returning the same in the in Fig. 1 shown starting position.
  • the pawl 25 of the opener 24 is manually operable, that is pivotable about the pawl pivot axis 27.
  • the pawl 25 of the opener 24 is also actuated via the second part 17 of the rack 14 of the electric motor.
  • the pawl 25 is L-shaped and comprises a first pawl leg 29 and a second pawl leg 30.
  • the pawl legs 29, 30 are arranged perpendicular to each other.
  • the second pawl leg 30 may be formed in an advantageous embodiment just so that it unrolls when opening the door 4 on the housing 1.
  • the first pawl leg 29 is engageable with the second part 17 of the rack 14 in engagement. Accordingly, the second pawl leg 30 can be brought into engagement with the housing.
  • the first pawl leg 29 forms a first force arm with respect to a pivoting movement of the pawl 25 about the pawl pivot axis 27.
  • the length of the force arm formed by the first pawl leg 29 results from the distance of a first Berntonticians 31 between the rack 14 on the one hand and the pawl pivot axis 27 on the other. Accordingly, the second pawl leg 30 forms a second force arm whose length is given by the distance of a second contact point 32 between the pawl 25 and the housing 1.
  • the first power arm is longer than the second power arm. It is in particular at least one and a half times, preferably at least twice as large as the length of the second force arm.
  • About a suitable dimensioning of the pawl legs 29, 30 and / or by a targeted arrangement of the pawl pivot axis 27 relative to the two points of contact 31, 32 can be easily adjusted by means of the rack 14 force to overcome an initial resistance when opening the door 4.
  • a pivot axis preparation 33 is provided in the door 4.
  • a sensor 34 is provided in the drive device 5, which monitors the position of the rack 14 and thus the opening position of the door 4 with respect to the housing 1.
  • the sensor 34 is connected to a control unit 61 shown only schematically for controlling the electric motor of the drive device 5 in data transmitting manner.
  • the data transmission can be analog or digital.
  • the sensor 34 is also connected in a corresponding manner to the drive unit 60.
  • an angle sensor for detecting the pivoting position of the door 4 with respect to the pivot axis 2 is provided.
  • the control unit 61 is also connected to the drive unit 60 in a data transmitting manner. It is integrated in the door 4. However, it may be arranged accessible to a user in the door 4.
  • various parameters of the opening behavior of the door 4 are preferably adjustable by the user.
  • the control unit 61 in particular the speed profile of the opening and / or closing operation of the door 4 is adjustable.
  • the maximum opening angle of the door 4 can be adjusted by the user.
  • a maximum opening duration of the door 4 is adjustable, after which the drive device 5 automatically closes the door 4.
  • the user adjustable opening angle that is the angle around the door 4 maximum from the in Fig. 1 shown closed position about the pivot axis 2 is pivotable, is in the range of 20 ° to 180 °, in particular in the range of 70 ° to 130 °.
  • the drive device 5 is designed as a module and thus easy to retrofit.
  • the second pawl leg 30 is pressed with the second contact point 32 against the housing 1, resulting in an opening of the door 4. Due to the lever arm ratio of the first pawl leg 29 to the second pawl leg 30, the drive means 5 requires very little power, even to overcome a considerable initial resistance.
  • the dimensioning of the pawl 25, in particular the lever arm ratio of the first pawl leg 29 to the second pawl leg 30 is particularly adapted to the volume and / or the cooling capacity of the refrigerator.
  • the first part 16 of the rack 14 is displaced by the drive device 5 via the gear 21 along an opening direction 36.
  • the opening direction 36 is opposite to the actuation direction 35.
  • a torque with respect to the pivot axis 2 is exerted on the door 4 via the hinge 3.
  • various parameters of the opening operation of the door 4 are adjustable by means of the control unit 61.
  • it may be provided in particular to set the opening speed, the end position of the door 4 and a maximum opening duration, after which the door 4 is automatically closed by means of the drive device 5.
  • the opening operation of the door 4 is monitored by means of the sensor 34. This makes it possible to ensure that the opening and closing speed of the door 4 is independent of their payload.
  • the user can thus set an individually predetermined door speed via the control unit 61.
  • the opening and / or closing operation by means of the control unit 61 is interruptible and / or reversible.
  • an automatic opening or closing of the door 4 can also be interrupted by hand in a simple manner.
  • the pawl 25a according to the second embodiment is arranged with respect to the pawl pivot axis 27 so as to be pivoted to overcome the initial resistance in opening the door 4 in the same direction about the pawl pivot axis 27 as the door 4 with respect to the pivot axis 2 in the course of further opening the same.
  • the operation direction 35a and the opening direction 36 coincide in this embodiment.
  • the first pawl leg 29a is formed telescopically. It comprises a latching element 37, which is displaceably guided along the leg direction.
  • the latching element 37 is spring-mounted in the latch 25a by means of a latching spring 38.
  • the latching element 37 has an outer contour, which corresponds to an inner contour of a latching recess 39 in the second part 17 of the rack 14.
  • the latching recess 39 has on its side facing away from the pivot axis 2 an engagement flank 40, which runs perpendicular to the actuation direction 35a.
  • the detent recess 39 is formed chamfered.
  • the second part 17 of the rack 14 at its end facing away from the pivot axis 2 a chamfer 41.
  • the rack 14 When closing the door 4, the rack 14 is initially not in engagement with the pawl 25a. By moving the second part 17 of the rack 14 against the opening and actuating direction 36, 35 a, this is pushed over the latching element 37 of the pawl 25 a. Here, the chamfer 41 slides on the contour of the locking element 37 and pushes it against the tension of the detent spring 38 a little inwards. The second part 17 of the rack 14 is displaced against the actuation direction 35a until the latching recess 39 engages with the latching element 37. In this position, the engaging edge 40 is located on the side facing away from the pivot axis 2 of the latching element 37 at this.
  • a displacement of the second part 17 of the locking rod 14 along the actuation direction 35a from this position leads to a pivoting of the pawl 25a about the pawl pivot axis 27, whereby the second pawl leg 30 is pressed against the housing 1 in the second contact point 32 which results in opening the door 4 against the initial resistance.
  • the rack 14 From a certain pivoting of the pawl 25a to the pawl pivot axis 27 comes Rack 14 out of engagement with the pawl 25a.
  • 35 a this no longer interacts with the pawl 25 a.
  • the pawl 25a is automatically pivoted back into its starting position due to the return element in the pawl joint 28.
  • the rack 14, in particular also the first part 16 of the rack 14 is displaced along the opening direction 36.
  • a locking device 42 is provided, by means of which the displaceability of the two parts 16, 17 of the rack 14 against each other can be locked.
  • the locking device 42 comprises a locking lever 43 with a locking lug 44.
  • the locking lever 43 is pivotable about a locking lever axis 45 pivotally mounted on the first part 16 of the rack 14.
  • the second part 17 of the rack 14 has a plurality of the shape of the locking lug 44 adapted locking notches 46.
  • the locking device 42 By engaging the locking lug 44 of the locking lever 43 in one of the locking notches 46, the relative position of the first part 16 of the rack 14 to the second part 17 of the rack 14 can be locked.
  • the locking device 42 also includes a spring 62 which pivots the locking lever 43 about the locking lever axis 45 so that the locking lug 44 on the locking lever 43 with the locking notch 46 in the second part 17 of Rack 14 engages.
  • first unlocking element 47 is arranged transversely to the actuating direction 35.
  • the first unlocking element 47 is in particular designed such that it interacts with a displacement of the rack 14 in the actuating direction 35 from a certain position of the rack 14 with a door 4 mounted on the second unlocking element 48.
  • the second unlocking element 48 is designed as a wedge-shaped attachment. The latter is arranged at a distance from the toothed rack 14 on the door 4 such that it can be brought into engagement with the inclined first unlocking element 47 only when the toothed rack 14 is displaced in the actuating direction 35.
  • the second unlocking element 48 comes as in Fig. 9 shown engages from a certain position of the first part 16 of the rack 14 with the first unlocking element 47 of the locking lever 43, whereby it is pivoted about the locking lever axis 45 so that the locking lug 44 at the locking Lever 43 is pulled out of the locking notch 46, and thus the locking of the first part 16 of the rack 14 is lifted against the second part 17 of the rack 14.
  • the two parts 16, 17 of the rack 14 are thus unlocked for further displacement of the second part 17 of the rack 14 in the operating direction 35 against each other.
  • the two parts 16, 17 of the rack 14 are thus, apart from the operation of the pawl 25 of the opener 24 to overcome the initial resistance when opening the door 4 over almost the entire pivoting range of the door 4 relative to the housing 1 relative to each other immovable.
  • An idle stroke for actuating the pawl 25 is thus only in the range of a small opening angle of less than 10 °, in particular less than 5 ° of the door available.
  • the drive device 5c has a belt 51 running over two rollers 49, 50.
  • the belt 51 is elastic.
  • the belt 51 may also be formed as a toothed belt, rope or chain.
  • the two rollers 49, 50 are rotatable, in particular rotatably drivable arranged on the door 4. Between the two rollers 49, 50 of the belt 51 is substantially rectilinear, which is why the drive means 5c as in the previous embodiments is referred to as a linear drive.
  • the hinge 3c comprises the first leg 8c hinged to the door 4 via the first hinge 10, the second leg 9c hinged via the second hinge 11 to the housing 1 and via the third hinge 12 to the first leg 8c and one via the fourth Joint 13 on the first leg 8c hinged third leg 52.
  • the third leg 52 is connected via a fifth joint 53 pivotally connected to a slide 51 slidably guided by the belt 54.
  • the first leg 8c is arcuate, that is curved.
  • the third leg 52 is curved, curved.
  • the hinge 3c comprises a tension roller 55, which is rotatably mounted on the fourth joint 13.
  • the belt 51 is guided over the tension roller 55.
  • the belt 51 is deflected by the tension roller 55 from its rectilinear course between the rollers 49, 50 and thus biased.
  • the tension roller 55 is pressed against the housing 1, whereby the initial resistance in opening the door 4 is overcome.
  • the fourth joint 13 is passed through an overstretched position of the first and third legs 8c, 52 to each other, that is, a dead center position of these two legs to each other is passed.
  • the dead center position of the first and third leg 8c, 52 to each other ensures a safe closing of the door 4.
  • a displacement of the carriage 54 by means of the belt 51 along the opening direction 36c leads to a pivoting of the door 4 about the pivot axis 2 and thus to an opening of the door.
  • a fourth leg 56 which is articulated via a sixth joint 57 on the third leg 52, is provided.
  • a support roller 58 is arranged, which bears against the housing 1 in the closed state of the door 4.
  • a spring 59 is provided, which is biased when closing the door 4 and presses the fourth leg 56 with the support roller 58 against the housing 1.
  • the opener 24 electromagnetically. This is particularly advantageous for doors with a magnetic closure. To open the door 4, a magnetic field is generated in the opener 24 in this embodiment, which cooperates with a magnetic field of a permanent magnet integrated in the housing 1 just so that the door 4 is thereby opened.

Description

Die Erfindung betrifft eine Anordnung aus einem Gehäuse, einer an diesem angelenkten Tür und einer Antriebs-Einrichtung zum Verschwenken der Tür gegenüber dem Gehäuse.The invention relates to an arrangement of a housing, a door hinged thereto and a drive means for pivoting the door relative to the housing.

Automatische Antriebe sind beispielsweise aus der WO 2007/009783 A1 , aus der US 3,653,154 und aus der US 2005/0262868 A1 bekannt und können das Öffnen einer Türe vereinfachen. Jedoch stellt sich beim Öffnen einer Kühlschrank-Türe das Problem, dass hierbei eine besonders hohe Anfangskraft überwunden werden muss, um einen Unterdruck, welcher sich bei geschlossener Türe im Inneren des Kühlschranks ausbildet, zu überwinden. Außerdem wird üblicherweise erwartet, dass die Tür auch manuell geöffnet werden kann, ohne dass hierbei die Antriebs-Einrichtung beschädigt wird. Dies erfordert im Allgemeinen eine komplizierte Mechanik.Automatic drives are for example from the WO 2007/009783 A1 , from the US 3,653,154 and from the US 2005/0262868 A1 known and can simplify the opening of a door. However, when opening a refrigerator door, the problem arises that in this case a particularly high initial force must be overcome in order to overcome a negative pressure which forms inside the refrigerator when the door is closed. In addition, it is usually expected that the door can also be opened manually without damaging the drive device. This generally requires a complicated mechanism.

Der Erfindung liegt daher die Aufgabe zugrunde, eine Antriebs-Einrichtung für Kühlschranktüren zu verbessern.The invention is therefore based on the object to improve a drive device for refrigerator doors.

Diese Aufgabe wird durch die Merkmale des Anspruchs 1 gelöst. Der Kern der Erfindung besteht darin, die Antriebs-Einheit mittels Kraftübertragungs-Elementen an ein Scharnier der Kühlschrank-Tür zu koppeln. Weitere vorteilhafte Ausgestaltungen der Erfindung ergeben sich aus den Unteransprüchen.This object is solved by the features of claim 1. The essence of the invention is to couple the drive unit by means of power transmission elements to a hinge of the refrigerator door. Further advantageous embodiments of the invention will become apparent from the dependent claims.

Merkmale und Einzelheiten der Erfindung ergeben sich aus der Beschreibung mehrerer Ausführungsbeispiele anhand der Zeichnungen. Es zeigen:

Fig. 1
eine schematische Ansicht auf eine Anordnung gemäß einem ersten Ausführungsbeispiel mit der Tür in geschlossener Stellung;
Fig. 2
eine Ansicht gemäß Fig. 1 mit der Tür in Öffnungs-Stellung;
Fig. 3
eine Ansicht einer Anordnung gemäß einem zweiten Ausführungsbeispiel mit der Tür in einer ersten geschlossenen Stellung;
Fig. 4
eine Ansicht der Anordnung gemäß Fig. 3 mit der Tür in einer zweiten geschlossenen Stellung;
Fig. 5
eine Ansicht der Anordnung gemäß Fig. 4 beim Öffnen der Tür;
Fig. 6
eine Ansicht der Anordnung gemäß Fig. 5 mit der Tür in geöffnetem Zustand;
Fig. 7, 8 und 9
Ansichten einer Anordnung gemäß einem dritten Ausführungsbeispiel;
Fig. 10
Ansicht einer Anordnung gemäß einem vierten Ausführungsbeispiel mit der Tür in geschlossener Stellung;
Fig. 11
eine Ansicht der Anordnung gemäß Fig. 10 mit der Tür in geöffneter Stellung; und
Fig. 12, 13 und 14
Ansichten einer Anordnung gemäß einem fünften Ausführungsbeispiel.
Features and details of the invention will become apparent from the description of several embodiments with reference to the drawings. Show it:
Fig. 1
a schematic view of an arrangement according to a first embodiment with the door in the closed position;
Fig. 2
a view according to Fig. 1 with the door in opening position;
Fig. 3
a view of an arrangement according to a second embodiment with the door in a first closed position;
Fig. 4
a view of the arrangement according to Fig. 3 with the door in a second closed position;
Fig. 5
a view of the arrangement according to Fig. 4 when opening the door;
Fig. 6
a view of the arrangement according to Fig. 5 with the door in the open state;
FIGS. 7, 8 and 9
Views of an arrangement according to a third embodiment;
Fig. 10
View of an arrangement according to a fourth embodiment with the door in the closed position;
Fig. 11
a view of the arrangement according to Fig. 10 with the door in the open position; and
FIGS. 12, 13 and 14
Views of an arrangement according to a fifth embodiment.

Im Folgenden wird unter Bezugnahme auf die Fig. 1 und 2 ein erstes Ausführungsbeispiel der Erfindung beschrieben. Die erfindungsgemäße Anordnung umfasst ein in den Figuren nur schematisch dargestelltes Gehäuse 1, insbesondere eines Kühl- und/oder Gefriergeräts, eine am Gehäuse 1 über ein Scharnier 3 um eine Schwenk-Achse 2 verschwenkbar angelenkte Tür 4 und eine Antriebs-Einrichtung 5 zum Verschwenken der Tür 4 gegenüber dem Gehäuse 1. Weiterhin ist ein Dichtungs-Element 6 vorgesehen, welches im geschlossenen Zustand der Tür 4 abdichtend zwischen dieser und dem Gehäuse 1 anliegt, sodass das Gehäuse 1 mittels der Tür 4 luftdicht nach außen abschließbar ist.The following is with reference to the Fig. 1 and 2 a first embodiment of the invention described. The inventive arrangement comprises a in the figures only schematically illustrated housing 1, in particular a refrigerator and / or freezer, a hinged to the housing 1 via a hinge 3 about a pivot axis 2 hinged door 4 and a drive means 5 for pivoting the Door 4 relative to the housing 1. Furthermore, a sealing element 6 is provided, which in the closed state of the door 4 sealingly abuts between this and the housing 1, so that the housing 1 by means of the door 4 airtight to the outside is lockable.

Die Tür 4 ist spiegelsymmetrisch zu einer Mittel-Ebene 7, welche parallel zur Schwenk-Achse 2 verläuft, ausgebildet. Das Scharnier 3 ist somit wahlweise auf der einen oder der anderen Seite der Mittel-Ebene 7 montierbar. Die Öffnungs-Richtung der Tür 4 ist somit frei wählbar.The door 4 is mirror-symmetrical to a central plane 7, which runs parallel to the pivot axis 2, is formed. The hinge 3 is thus optionally mounted on one or the other side of the central plane 7. The opening direction of the door 4 is thus freely selectable.

Das Scharnier 3 umfasst einen ersten Schenkel 8, welcher mittels eines ersten Gelenks 10 an der Tür 4 angelenkt ist, und einen zweiten Schenkel 9, welcher mittels eines zweiten Gelenks 11 am Gehäuse 1 angelenkt ist. Das zweite Gelenk 11 ist mittels einer Halte-Platte 15 am Gehäuse 1 befestigt. Die beiden Schenkel 8, 9 sind ihrerseits über ein drittes Gelenk 12 verschwenkbar miteinander verbunden. Schließlich ist am ersten Schenkel 8 eine Zahnstange 14 mittels eines vierten Gelenks 13 angelenkt. Die Gelenke 10, 11, 12, 13 ermöglichen jeweils eine Verschwenkung um eine Achse parallel zur Schwenk-Achse 2.The hinge 3 comprises a first leg 8, which is articulated by means of a first hinge 10 on the door 4, and a second leg 9, which is articulated by means of a second hinge 11 on the housing 1. The second joint 11 is fastened to the housing 1 by means of a holding plate 15. The two legs 8, 9 are in turn pivotally connected to each other via a third joint 12. Finally, a rack 14 is articulated by means of a fourth joint 13 on the first leg 8. The joints 10, 11, 12, 13 each allow a pivoting about an axis parallel to the pivot axis. 2

Das erste Gelenk 10 ist beabstandet zur Schwenk-Achse 2 angeordnet. Der erste Schenkel 8 ist L-förmig ausgebildet. Dies ermöglicht eine besonders platzsparende, kompakte Ausbildung des Scharniers 3. In einer besonders vorteilhaften Ausführungsform ist es vorgesehen, mehrere Alternativ-Positionen zur Anordnung des vierten Gelenks 13 zur Anlenkung der Zahnstange 14 am ersten Schenkel 8 vorzusehen. Hierdurch können die Hebel-Verhältnisse des Scharniers 3, insbesondere das Zusammenwirken der Zahnstange 14 der Antriebs-Einrichtung 5 mit dem Scharnier 3 an die jeweiligen Erfordernisse angepasst werden.The first hinge 10 is arranged at a distance from the pivot axis 2. The first leg 8 is L-shaped. This allows a particularly space-saving, compact design of the hinge 3. In a particularly advantageous embodiment, it is provided to provide a plurality of alternative positions for the arrangement of the fourth joint 13 for the articulation of the rack 14 on the first leg 8. In this way, the lever ratios of the hinge 3, in particular the interaction of the rack 14 of the drive device 5 with the hinge 3 can be adapted to the respective requirements.

Es können auch mehrere Scharniere 3 übereinander, beispielsweise am oberen und unteren Rand der Tür 4 angeordnet sein. Hierbei sind die Scharniere 3 ebenso wie die Antriebs-Einrichtung 5 in die Tür 4 integriert. Für die Integration der Antriebs-Einrichtung 5 sind in der Tür 4 Ausnehmungen vorgesehen, wobei die Ausnehmungen außerhalb eines Dichtungsbereiches des Gehäuses 1 angeordnet sind und somit thermisch von einem Innenbereich des Gehäuses 1 isoliert sind.It is also possible to arrange a plurality of hinges 3 one above the other, for example at the upper and lower edge of the door 4. Here, the hinges 3 as well as the drive device 5 are integrated in the door 4. For the integration of the drive device 5 4 recesses are provided in the door, wherein the recesses are arranged outside a sealing region of the housing 1 and thus thermally insulated from an inner region of the housing 1.

Das Scharnier 3 ist mehrteilig, insbesondere mehrachsig ausgebildet. Es umfasst mindestens drei, insbesondere mindestens 4 Schwenkachsen. Für eine besonders vorteilhafte Ausführung des Scharniers 3 sei auf die DE 10 2006 019 332 A1 verwiesen.The hinge 3 is multi-part, in particular multi-axially formed. It comprises at least three, in particular at least 4 pivot axes. For a particularly advantageous embodiment of the hinge 3 is on the DE 10 2006 019 332 A1 directed.

Die Zahnstange 14 ist zweiteilig ausgebildet. Sie umfasst ein über das vierte Gelenk 13 mit dem ersten Schenkel 8 des Scharniers 3 verbundenes erstes Teil 16 und ein mit dem ersten Teil 16 verbundenes zweites Teil 17. Die zwei Teile 16, 17 sind um einen vorbestimmten Weg linear gegeneinander verschiebbar. Hierfür ist im zweiten Teil 17 eine langlochförmige Aussparung 18 vorgesehen, in welche ein am ersten Teil 16 angeordneter Zapfen 19 eingreift. Die Verschiebbarkeit der zwei Teile 16, 17 gegeneinander wird somit durch die Verschiebbarkeit des Zapfens 19 in der Aussparung 18 begrenzt. Das zweite Teil 17 weist eine Vielzahl von Zähnen 20 auf, welche mit einem Zahnrad 21 eines Getriebes 22 in Eingriff stehen. Das Zahnrad 21 des Getriebes 22 ist um eine Antriebs-Achse 23 von einer in den Figuren nur schematisch dargestellten Antriebs-Einheit 60, insbesondere einem Elektromotor, drehantreibbar. Im Getriebe 22 ist eine Kupplung vorgesehen. Die Kupplung dient dem Überlast-Schutz der Antriebs-Einrichtung 5 beispielsweise bei manuellem Öffnen der Tür 4, oder falls sich diese auf unvorhergesehene Weise verklemmt. Die Kupplung ist elektromagnetisch oder mechanisch ausgebildet. Mittels einer elektromagnetischen Kupplung lässt sich die Antriebs-Einrichtung 5 auf besonders einfache Weise zu- und abschalten. Hierdurch kann zwischen manuellem und automatischem Betrieb umgeschaltet werden.The rack 14 is formed in two parts. It comprises a first part 16 connected via the fourth joint 13 to the first leg 8 of the hinge 3 and a second part 17 connected to the first part 16. The two parts 16, 17 are linearly offset from each other by a predetermined distance displaceable. For this purpose, an elongated hole-shaped recess 18 is provided in the second part 17, in which engages a pin 16 arranged on the first part 16. The displaceability of the two parts 16, 17 against each other is thus limited by the displaceability of the pin 19 in the recess 18. The second part 17 has a plurality of teeth 20, which are in engagement with a gear 21 of a transmission 22. The gear 21 of the transmission 22 is rotatably driven about a drive axis 23 of a drive unit 60, in particular an electric motor, shown only schematically in the figures. In the transmission 22, a clutch is provided. The coupling is used to overload protection of the drive device 5, for example, when manually opening the door 4, or if this jammed in an unforeseen way. The coupling is electromagnetically or mechanically formed. By means of an electromagnetic clutch, the drive device 5 can be switched on and off in a particularly simple manner. This allows you to switch between manual and automatic operation.

Über die Zahnstange 14 sind Kräfte zur Bewegung der Tür 4 von dem Elektromotor auf das eine Kinematik bildende Scharnier 3 übertragbar. Die Zahnstange 14 ist geradlinig verschiebbar, weshalb die Antriebs-Einrichtung 5 als Linearantrieb bezeichnet wird. Mittels des Elektromotors ist ein Drehmoment bezüglich der Schwenk-Achse 2 auf die Tür 4 ausübbar. Je nach Drehrichtung des Zahnrads 21 um die Antriebs-Achse 23 ist die Tür 4 somit mittels des Elektro-Motors öffen- oder schließbar.Via the rack 14, forces for moving the door 4 are transferable from the electric motor to the hinge 3 forming a kinematics. The rack 14 is linearly displaceable, which is why the drive device 5 is referred to as a linear drive. By means of the electric motor, a torque with respect to the pivot axis 2 on the door 4 exercisable. Depending on the direction of rotation of the gear 21 about the drive axis 23, the door 4 can thus be opened or closed by means of the electric motor.

Auf der der Schwenk-Achse 2 bezüglich der Mittel-Ebene 7 gegenüberliegenden Seite der Tür 4 ist ein Öffner 24 vorgesehen. Der Öffner 24 umfasst eine L-förmige Klinke 25, welche um eine Klinken-Verschwenk-Achse 27 verschwenkbar ist. Die Klinken-Verschwenk-Achse 27 ist Teil eines Klinken-Gelenks 28, welches mittels einer zweiten Halte-Platte 26 an der Tür 4 befestigt ist. Das Klinken-Gelenk 28 weist ein insbesondere als Feder ausgebildetes Rückstell-Element zum automatischen Zurückführen desselben in die in Fig. 1 gezeigte Ausgangsstellung auf.On the pivot axis 2 with respect to the center plane 7 opposite side of the door 4, an opener 24 is provided. The opener 24 includes an L-shaped pawl 25 which is pivotable about a pawl pivot axis 27. The pawl pivot axis 27 is part of a pawl hinge 28, which is fastened by means of a second retaining plate 26 to the door 4. The pawl-joint 28 has a formed in particular as a spring return element for automatically returning the same in the in Fig. 1 shown starting position.

Die Klinke 25 des Öffners 24 ist manuell betätigbar, das heißt um die Klinken-Verschwenk-Achse 27 verschwenkbar. Die Klinke 25 des Öffners 24 ist außerdem über das zweite Teil 17 der Zahnstange 14 von dem Elektromotor betätigbar.The pawl 25 of the opener 24 is manually operable, that is pivotable about the pawl pivot axis 27. The pawl 25 of the opener 24 is also actuated via the second part 17 of the rack 14 of the electric motor.

Die Klinke 25 ist L-förmig ausgebildet und umfasst einen ersten Klinken-Schenkel 29 und einen zweiten Klinken-Schenkel 30. Die Klinken-Schenkel 29, 30 sind senkrecht zueinander angeordnet. Alternativ hierzu kann der zweite Klinken-Schenkel 30 in einer vorteilhaften Ausführung gerade so ausgebildet sein, dass er beim Öffnen der Tür 4 am Gehäuse 1 abrollt. Der erste Klinken-Schenkel 29 ist mit dem zweiten Teil 17 der Zahnstange 14 in Eingriff bringbar. Entsprechend ist der zweite Klinken-Schenkel 30 mit dem Gehäuse in Eingriff bringbar. Hierbei bildet der erste Klinken-Schenkel 29 einen ersten Kraftarm im Hinblick auf eine Verschwenk-Bewegung der Klinke 25 um die Klinken-Verschwenk-Achse 27. Die Länge des durch den ersten Klinken-Schenkel 29 gebildeten Kraftarms ergibt sich aus dem Abstand eines ersten Berührpunkts 31 zwischen der Zahnstange 14 einerseits und der Klinken-Verschwenk-Achse 27 andererseits. Entsprechend bildet der zweite Klinken-Schenkel 30 einen zweiten Kraftarm, dessen Länge durch den Abstand eines zweiten Berührpunktes 32 zwischen der Klinke 25 und dem Gehäuse 1 gegeben ist. Der erste Kraftarm ist länger als der zweite Kraftarm. Er ist insbesondere mindestens anderthalbmal, vorzugsweise mindestens zweimal so groß wie die Länge des zweiten Kraftarms. Über eine geeignete Dimensionierung der Klinken-Schenkel 29, 30 und/oder durch eine gezielte Anordnung der Klinken-Verschwenk-Achse 27 relativ zu den beiden Berührpunkten 31, 32 lässt sich auf einfache Weise die mittels der Zahnstange 14 übertragbare Kraft zur Überwindung eines Anfangs-Widerstandes beim Öffnen der Tür 4 einstellen.The pawl 25 is L-shaped and comprises a first pawl leg 29 and a second pawl leg 30. The pawl legs 29, 30 are arranged perpendicular to each other. Alternatively, the second pawl leg 30 may be formed in an advantageous embodiment just so that it unrolls when opening the door 4 on the housing 1. The first pawl leg 29 is engageable with the second part 17 of the rack 14 in engagement. Accordingly, the second pawl leg 30 can be brought into engagement with the housing. Here, the first pawl leg 29 forms a first force arm with respect to a pivoting movement of the pawl 25 about the pawl pivot axis 27. The length of the force arm formed by the first pawl leg 29 results from the distance of a first Berührpunkts 31 between the rack 14 on the one hand and the pawl pivot axis 27 on the other. Accordingly, the second pawl leg 30 forms a second force arm whose length is given by the distance of a second contact point 32 between the pawl 25 and the housing 1. The first power arm is longer than the second power arm. It is in particular at least one and a half times, preferably at least twice as large as the length of the second force arm. About a suitable dimensioning of the pawl legs 29, 30 and / or by a targeted arrangement of the pawl pivot axis 27 relative to the two points of contact 31, 32 can be easily adjusted by means of the rack 14 force to overcome an initial resistance when opening the door 4.

Spiegelsymmetrisch zur Schwenk-Achse 2 bezüglich der Mittel-Ebene 7 ist in der Tür 4 eine Schwenk-Achsen-Vorbereitung 33 vorgesehen.Mirror-symmetrical to the pivot axis 2 with respect to the center plane 7, a pivot axis preparation 33 is provided in the door 4.

Vorteilhafterweise ist in der Antriebs-Einrichtung 5 ein Sensor 34 vorgesehen, welcher die Position der Zahnstange 14 und somit die Öffnungs-Stellung der Tür 4 bezüglich des Gehäuses 1 überwacht. Der Sensor 34 ist mit einer nur schematisch dargestellten Steuer-Einheit 61 zur Steuerung des Elektromotors der Antriebs-Einrichtung 5 in Daten übertragender Weise verbunden. Die Datenübertragung kann analog oder digital erfolgen. Der Sensor 34 ist außerdem in entsprechender Weise mit der Antriebs-Einheit 60 verbunden. Als Sensor 34 ist insbesondere ein Winkelsensor zur Erkennung der Verschwenkstellung der Tür 4 bezüglich der Schwenk-Achse 2 vorgesehen. Die Steuer-Einheit 61 ist ebenfalls mit der Antriebs-Einheit 60 in Daten übertragender Weise verbunden. Sie ist in die Tür 4 integriert. Sie kann jedoch für einen Benutzer zugänglich in der Tür 4 angeordnet sein. Mittels der Steuer-Einheit 61 sind vorzugsweise verschiedene Parameter des Öffnungs-Verhaltens der Tür 4 vom Benutzer einstellbar. Mittels der Steuer-Einheit 61 ist insbesondere der Geschwindigkeitsverlauf des Öffnungs- und/oder Schließ-Vorgangs der Tür 4 einstellbar. Außerdem kann mittels der Steuer-Einheit 61 der maximale Öffnungswinkel der Tür 4 vom Benutzer eingestellt werden. Schließlich ist mittels der Steuer-Einheit 61 auch eine maximale Öffnungs-Dauer der Tür 4 einstellbar, nach welcher die Antriebs-Einrichtung 5 die Tür 4 automatisch schließt. Der vom Anwender einstellbare Öffnungswinkel, das heißt der Winkel um den die Tür 4 maximal aus der in Fig. 1 dargestellten geschlossenen Position um die Schwenk-Achse 2 verschwenkbar ist, liegt im Bereich von 20° bis 180°, insbesondere im Bereich von 70° bis 130°.Advantageously, a sensor 34 is provided in the drive device 5, which monitors the position of the rack 14 and thus the opening position of the door 4 with respect to the housing 1. The sensor 34 is connected to a control unit 61 shown only schematically for controlling the electric motor of the drive device 5 in data transmitting manner. The data transmission can be analog or digital. The sensor 34 is also connected in a corresponding manner to the drive unit 60. As sensor 34, in particular, an angle sensor for detecting the pivoting position of the door 4 with respect to the pivot axis 2 is provided. The control unit 61 is also connected to the drive unit 60 in a data transmitting manner. It is integrated in the door 4. However, it may be arranged accessible to a user in the door 4. By means of the control unit 61, various parameters of the opening behavior of the door 4 are preferably adjustable by the user. By means of the control unit 61, in particular the speed profile of the opening and / or closing operation of the door 4 is adjustable. In addition, by means of the control unit 61, the maximum opening angle of the door 4 can be adjusted by the user. Finally, by means of the control unit 61, a maximum opening duration of the door 4 is adjustable, after which the drive device 5 automatically closes the door 4. The user adjustable opening angle, that is the angle around the door 4 maximum from the in Fig. 1 shown closed position about the pivot axis 2 is pivotable, is in the range of 20 ° to 180 °, in particular in the range of 70 ° to 130 °.

Die Antriebs-Einrichtung 5 ist als Modul ausgebildet und somit leicht nachrüstbar.The drive device 5 is designed as a module and thus easy to retrofit.

Im Folgenden wird die Funktion der Anordnung beschrieben. Um die Tür 4 aus der in Fig. 1 dargestellten geschlossenen Stellung zu öffnen, muss zunächst ein durch die Magnetkraft der Dichtung und/oder ein relatives Vakuum im Innern des Gehäuses 1 hervorgerufener Anfangs-Widerstand überwunden werden. Hierzu wird die Klinke 25 des Öffners 24 um die Klinken-Verschwenk-Achse 27 verschwenkt. Dies kann entweder durch eine manuelle Betätigung der Klinke 25 oder mittels des Elektromotors der Antriebs-Einrichtung 5 durchgeführt werden. Zum Verschwenken der Klinke 25 mittels der Antriebs-Einrichtung 5 wird das Zahnrad 21 derart um die Antriebs-Achse 23 gedreht, dass das zweite Teil 17 der Zahnstange 14 entlang einer Betätigungs-Richtung 35 verschoben wird und dadurch mit dem ersten Klinken-Schenkel 29 der Klinke 25 in Eingriff kommt und diese um die Klinken-Verschwenk-Achse 27 verschwenkt. Hierdurch wird der zweite Klinken-Schenkel 30 mit dem zweiten Berührpunkt 32 gegen das Gehäuse 1 gedrückt, was zu einer Öffnung der Tür 4 führt. Aufgrund des Hebelarm-Verhältnisses des ersten Klinken-Schenkels 29 zum zweiten Klinken-Schenkel 30 benötigt die Antriebs-Einrichtung 5 nur sehr wenig Leistung, selbst um einen beträchtlichen Anfangs-Widerstand zu überwinden. Die Dimensionierung der Klinke 25, insbesondere des Hebelarm-Verhältnisses des ersten Klinken-Schenkels 29 zum zweiten Klinken-Schenkel 30 ist insbesondere an das Volumen und/oder die Kühlleistung des Kühlgerätes angepasst.The function of the arrangement will now be described. To the door 4 from the in Fig. 1 To open illustrated illustrated closed position, first caused by the magnetic force of the seal and / or a relative vacuum in the interior of the housing 1 initial resistance must be overcome. For this purpose, the pawl 25 of the opener 24 is pivoted about the pawl pivot axis 27. This can be done either by a manual operation of the pawl 25 or by means of the electric motor of the drive device 5. For pivoting the pawl 25 by means of the drive device 5, the gear 21 is rotated about the drive axis 23 that the second part 17 of the rack 14 is displaced along an actuating direction 35 and thereby with the first pawl leg 29 of Pawl 25 engages and this pivots about the pawl pivot axis 27. As a result, the second pawl leg 30 is pressed with the second contact point 32 against the housing 1, resulting in an opening of the door 4. Due to the lever arm ratio of the first pawl leg 29 to the second pawl leg 30, the drive means 5 requires very little power, even to overcome a considerable initial resistance. The dimensioning of the pawl 25, in particular the lever arm ratio of the first pawl leg 29 to the second pawl leg 30 is particularly adapted to the volume and / or the cooling capacity of the refrigerator.

Nach Betätigen des Öffners 24, insbesondere der Klinke 25 erfolgt eine Umschaltung der Drehrichtung des Elektromotors mittels der Steuer-Einheit 61. Das Umschalten erfolgt nach einer definierten, vorgegebenen Zeit. Denkbar ist jedoch auch, den Umschalt-Vorgang mittels der Steuer-Einheit 61 derart zu steuern, dass er nach dem Erreichen der Endposition des zweiten Teils 17 der Zahnstange 14, beispielsweise durch Kontaktschluss des Zapfens 19 in der Aussparung 18, eingeleitet wird.After pressing the opener 24, in particular the pawl 25, a changeover of the direction of rotation of the electric motor by means of the control unit 61. The switching takes place after a defined, predetermined time. However, it is also conceivable to control the switching operation by means of the control unit 61 such that it is introduced after reaching the end position of the second part 17 of the rack 14, for example by contact closure of the pin 19 in the recess 18.

Zum weiteren Öffnen der Tür 4 wird das erste Teil 16 der Zahnstange 14 von der Antriebs-Einrichtung 5 über das Zahnrad 21 entlang einer Öffnungs-Richtung 36 verschoben. Die Öffnungs-Richtung 36 ist entgegengesetzt zur Betätigungs-Richtung 35. Hierdurch wird über das Scharnier 3 ein Drehmoment bezüglich der Schwenk-Achse 2 auf die Tür 4 ausgeübt. In einer besonders vorteilhaften Ausführungsform sind verschiedene Parameter des Öffnungs-Vorgangs der Tür 4 mittels der Steuer-Einheit 61 einstellbar. So kann insbesondere vorgesehen sein, die ÖffnungsGeschwindigkeit, die End-Position der Tür 4 und eine maximale Öffnungs-Dauer, nach welcher die Tür 4 mittels der Antriebs-Einrichtung 5 automatisch geschlossen wird, einzustellen.To further open the door 4, the first part 16 of the rack 14 is displaced by the drive device 5 via the gear 21 along an opening direction 36. The opening direction 36 is opposite to the actuation direction 35. As a result, a torque with respect to the pivot axis 2 is exerted on the door 4 via the hinge 3. In a particularly advantageous embodiment, various parameters of the opening operation of the door 4 are adjustable by means of the control unit 61. Thus, it may be provided in particular to set the opening speed, the end position of the door 4 and a maximum opening duration, after which the door 4 is automatically closed by means of the drive device 5.

Der Öffnungs-Vorgang der Tür 4 wird mittels des Sensors 34 überwacht. Hierdurch lässt sich sicherstellen, dass die Öffnungs- und Schließgeschwindigkeit der Tür 4 unabhängig von deren Zuladung ist. Der Benutzer kann somit über die Steuer-Einheit 61 eine individuell vorgegebene Türgeschwindigkeit einstellen. Über die Stromaufnahme der Antriebs-Einheit 60 und/oder eine Abweichung der Winkelgeschwindigkeit der Tür 4 bezüglich der Schwenk-Achse 2 von einem über die Steuer-Einheit 61 vorgegebenem Geschwindigkeitsverlauf können auch Hindernisse beim Öffnen und/oder Schließen der Tür 4 schnell und einfach erkannt werden. In einem solchen Fall ist der Öffhungs- und/oder Schließ-Vorgang mittels der Steuer-Einheit 61 unterbrechbar und/oder umkehrbar. Hierdurch lässt sich ein automatisches Öffnen oder Schließen der Tür 4 auch auf einfache Weise von Hand unterbrechen.The opening operation of the door 4 is monitored by means of the sensor 34. This makes it possible to ensure that the opening and closing speed of the door 4 is independent of their payload. The user can thus set an individually predetermined door speed via the control unit 61. About the current consumption of the drive unit 60 and / or a deviation of the angular velocity of the door 4 with respect the pivot axis 2 of a predetermined via the control unit 61 speed course and obstacles during opening and / or closing the door 4 can be detected quickly and easily. In such a case, the opening and / or closing operation by means of the control unit 61 is interruptible and / or reversible. As a result, an automatic opening or closing of the door 4 can also be interrupted by hand in a simple manner.

Zum Schließen der Tür 4 wird das erste Teil 16 der Zahnstange 14 gegen die Öffnungs-Richtung 36 verschoben.To close the door 4, the first part 16 of the rack 14 is moved against the opening direction 36.

Im Folgenden wird unter Bezugnahme auf die Fig. 3 bis 6 ein zweites Ausführungsbeispiel der Erfindung beschrieben. Identische Teile erhalten dieselben Bezugszeichen wie beim ersten Ausführungsbeispiel, auf dessen Beschreibung hiermit verwiesen wird. Konstruktiv unterschiedliche, jedoch funktionell gleichartige Teile erhalten dieselben Bezugszeichen mit einem nachgestellten a. Der zentrale Unterschied zum ersten Ausführungsbeispiel besteht in der Ausbildung der Klinke 25a und deren Zusammenwirken mit der Zahnstange 14.The following is with reference to the Fig. 3 to 6 A second embodiment of the invention described. Identical parts are given the same reference numerals as in the first embodiment, to the description of which reference is hereby made. Structurally different but functionally similar parts receive the same reference numerals with a following a. The main difference to the first embodiment is the formation of the pawl 25a and their interaction with the rack 14th

Die Klinke 25a ist gemäß dem zweiten Ausführungsbeispiel derart bezüglich der Klinken-Verschwenk-Achse 27 angeordnet, dass sie zum Überwinden des Anfangs-Widerstands beim Öffnen der Tür 4 in die gleiche Richtung um die Klinken-Verschwenk-Achse 27 verschwenkt wird, wie die Tür 4 bezüglich der Schwenk-Achse 2 im Verlauf des weiteren Öffnens derselben. Mit anderen Worten fallen die Betätigungs-Richtung 35a und die Öffnungs-Richtung 36 bei diesem Ausführungsbeispiel zusammen.The pawl 25a according to the second embodiment is arranged with respect to the pawl pivot axis 27 so as to be pivoted to overcome the initial resistance in opening the door 4 in the same direction about the pawl pivot axis 27 as the door 4 with respect to the pivot axis 2 in the course of further opening the same. In other words, the operation direction 35a and the opening direction 36 coincide in this embodiment.

Der erste Klinken-Schenkel 29a ist teleskopisch ausgebildet. Er umfasst ein entlang der Schenkel-Richtung verschiebbar geführtes Rast-Element 37. Das Rast-Element 37 ist mittels einer Rast-Feder 38 gefedert in der Klinke 25a gelagert. Das Rast-Element 37 weist eine Außen-Kontur auf, welche einer Innen-Kontur einer Rast-Aussparung 39 im zweiten Teil 17 der Zahnstange 14 entspricht. Die Rast-Aussparung 39 weist an ihrer der Schwenk-Achse 2 abgewandten Seite eine Eingriffs-Flanke 40 auf, welche senkrecht zur Betätigungs-Richtung 35a verläuft. Auf ihrer der Schwenk-Achse 2 zugewandten Achse ist die Rast-Aussparung 39 abgeschrägt ausgebildet. Außerdem weist das zweite Teil 17 der Zahnstange 14 an ihrem der Schwenk-Achse 2 abgewandten Ende eine Abschrägung 41 auf.The first pawl leg 29a is formed telescopically. It comprises a latching element 37, which is displaceably guided along the leg direction. The latching element 37 is spring-mounted in the latch 25a by means of a latching spring 38. The latching element 37 has an outer contour, which corresponds to an inner contour of a latching recess 39 in the second part 17 of the rack 14. The latching recess 39 has on its side facing away from the pivot axis 2 an engagement flank 40, which runs perpendicular to the actuation direction 35a. On its pivot axis 2 facing axis, the detent recess 39 is formed chamfered. In addition, the second part 17 of the rack 14 at its end facing away from the pivot axis 2 a chamfer 41.

Beim Schließen der Tür 4 ist die Zahnstange 14 zunächst noch nicht in Eingriff mit der Klinke 25a. Durch Verschieben des zweiten Teils 17 der Zahnstange 14 gegen die Öffnungs- und Betätigungs-Richtung 36, 35a wird dieses über das Rast-Element 37 der Klinke 25a geschoben. Hierbei gleitet die Abschrägung 41 auf der Kontur des Rast-Elements 37 und drückt dieses gegen die Spannung der Rast-Feder 38 ein wenig nach innen. Das zweite Teil 17 der Zahnstange 14 wird solange gegen die Betätigungs-Richtung 35a verschoben, bis die Rast-Aussparung 39 mit dem Rast-Element 37 in Eingriff kommt. In dieser Stellung liegt die Eingriffs-Flanke 40 auf der der Schwenk-Achse 2 abgewandten Seite des Rast-Elements 37 an diesem an. Eine Verschiebung des zweiten Teils 17 der Raststange 14 entlang der Betätigungs-Richtung 35a aus dieser Stellung führt zu einer Verschwenkung der Klinke 25a um die Klinken-Verschwenk-Achse 27, wodurch der zweite Klinken-Schenkel 30 im zweiten Berührpunkt 32 gegen das Gehäuse 1 gedrückt wird, was eine Öffnung der Tür 4 gegen den Anfangs-Widerstand zur Folge hat. Ab einer bestimmten Verschwenkung der Klinke 25a um die Klinken-Verschwenk-Achse 27 kommt die Zahnstange 14 außer Eingriff mit der Klinke 25a. Bei einer weiteren Verschiebung der Zahnstange 14 entlang der Öffnungs- und Betätigungs-Richtung 36, 35a wirkt diese nicht mehr mit der Klinke 25a zusammen. Die Klinke 25a wird aufgrund des Rückstell-Elements im Klinken-Gelenk 28 selbsttätig in ihre Ausgangsposition zurückgeschwenkt. Zum weiteren Öffnen der Tür 4 wird die Zahnstange 14, insbesondere auch das erste Teil 16 der Zahnstange 14, entlang der Öffnungs-Richtung 36 verschoben.When closing the door 4, the rack 14 is initially not in engagement with the pawl 25a. By moving the second part 17 of the rack 14 against the opening and actuating direction 36, 35 a, this is pushed over the latching element 37 of the pawl 25 a. Here, the chamfer 41 slides on the contour of the locking element 37 and pushes it against the tension of the detent spring 38 a little inwards. The second part 17 of the rack 14 is displaced against the actuation direction 35a until the latching recess 39 engages with the latching element 37. In this position, the engaging edge 40 is located on the side facing away from the pivot axis 2 of the latching element 37 at this. A displacement of the second part 17 of the locking rod 14 along the actuation direction 35a from this position leads to a pivoting of the pawl 25a about the pawl pivot axis 27, whereby the second pawl leg 30 is pressed against the housing 1 in the second contact point 32 which results in opening the door 4 against the initial resistance. From a certain pivoting of the pawl 25a to the pawl pivot axis 27 comes Rack 14 out of engagement with the pawl 25a. In a further displacement of the rack 14 along the opening and actuating direction 36, 35 a this no longer interacts with the pawl 25 a. The pawl 25a is automatically pivoted back into its starting position due to the return element in the pawl joint 28. To further open the door 4, the rack 14, in particular also the first part 16 of the rack 14, is displaced along the opening direction 36.

Im Folgenden wird unter Bezugnahme auf die Fig. 7 bis 9 ein drittes Ausführungsbeispiel der Erfindung beschrieben. Identische Teile erhalten dieselben Bezugszeichen wie beim ersten Ausführungsbeispiel, auf dessen Beschreibung hiermit verwiesen wird. Der Unterschied zum ersten Ausführungsbeispiel besteht darin, dass eine Verriegelungs-Einrichtung 42 vorgesehen ist, mittels welcher die Verschiebbarkeit der beiden Teile 16, 17 der Zahnstange 14 gegeneinander verriegelbar ist. Die Verriegelungs-Einrichtung 42 umfasst einen Verriegelungs-Hebel 43 mit einer Verriegelungs-Nase 44. Der Verriegelungs-Hebel 43 ist um eine Verriegelungs-Hebel-Achse 45 verschwenkbar am ersten Teil 16 der Zahnstange 14 angelenkt. Außerdem weist das zweite Teil 17 der Zahnstange 14 mehrere an die Form der Verriegelungs-Nase 44 angepasste Verriegelungs-Kerben 46 auf. Durch einen Eingriff der Verriegelungs-Nase 44 des Verriegelungs-Hebels 43 in eine der Verriegelungs-Kerben 46 ist die relative Position des ersten Teils 16 der Zahnstange 14 zum zweiten Teil 17 der Zahnstange 14 verriegelbar. Die Verriegelungs-Einrichtung 42 umfasst außerdem eine Feder 62, welche den Verriegelungs-Hebel 43 derart um die Verriegelungs-Hebel-Achse 45 verschwenkt, dass die Verriegelungs-Nase 44 am Verriegelungs-Hebel 43 mit der Verriegelungs-Kerbe 46 im zweiten Teil 17 der Zahnstange 14 in Eingriff kommt.The following is with reference to the Fig. 7 to 9 A third embodiment of the invention described. Identical parts are given the same reference numerals as in the first embodiment, to the description of which reference is hereby made. The difference from the first embodiment is that a locking device 42 is provided, by means of which the displaceability of the two parts 16, 17 of the rack 14 against each other can be locked. The locking device 42 comprises a locking lever 43 with a locking lug 44. The locking lever 43 is pivotable about a locking lever axis 45 pivotally mounted on the first part 16 of the rack 14. In addition, the second part 17 of the rack 14 has a plurality of the shape of the locking lug 44 adapted locking notches 46. By engaging the locking lug 44 of the locking lever 43 in one of the locking notches 46, the relative position of the first part 16 of the rack 14 to the second part 17 of the rack 14 can be locked. The locking device 42 also includes a spring 62 which pivots the locking lever 43 about the locking lever axis 45 so that the locking lug 44 on the locking lever 43 with the locking notch 46 in the second part 17 of Rack 14 engages.

An dem der Verriegelungs-Nase 44 entgegengesetzten Ende des Verriegelungs-Hebels 43 weist dieser ein als Schräge ausgebildetes erstes Entriegelungs-Element 47 auf. Das erste Entriegelungs-Element 47 ist quer zur Betätigungs-Richtung 35 angeordnet. Das erste Entriegelungs-Element 47 ist insbesondere derart ausgebildet, dass es bei einer Verschiebung der Zahnstange 14 in Betätigungs-Richtung 35 ab einer bestimmten Position der Zahnstange 14 mit einem an der Tür 4 angebrachten zweiten Entriegelungs-Element 48 zusammenwirkt. Das zweite Entriegelungs-Element 48 ist als keilförmiger Aufsatz ausgebildet. Dieser ist derart beabstandet zur Zahnstange 14 an der Tür 4 angeordnet, dass er bei einer Verschiebung der Zahnstange 14 in Betätigungs-Richtung 35 ausschließlich mit dem schräggestellten ersten Entriegelungs-Element 47 in Eingriff bringbar ist. Bei einer Verschiebung der Zahnstange in Betätigungs-Richtung 35 kommt das zweite Entriegelungs-Element 48 wie in Fig. 9 dargestellt ab einer bestimmten Position des ersten Teils 16 der Zahnstange 14 mit dem ersten Entriegelungs-Element 47 des Verriegelungs-Hebels 43 in Eingriff, wodurch dieser derart um die Verriegelungs-Hebel-Achse 45 verschwenkt wird, dass die Verriegelungs-Nase 44 am Verriegelungs-Hebel 43 aus der Verriegelungs-Kerbe 46 gezogen wird, und somit die Verriegelung des ersten Teils 16 der Zahnstange 14 gegen das zweite Teil 17 der Zahnstange 14 aufgehoben wird. Die zwei Teile 16, 17 der Zahnstange 14 sind somit für eine weitere Verschiebung des zweiten Teils 17 der Zahnstange 14 in Betätigungs-Richtung 35 gegeneinander entriegelt. Umgekehrt sind die beiden Teile 16, 17 der Zahnstange 14 bei einer Verschiebung derselben gegen die Betätigungs-Richtung 35 nur solange gegeneinander verschiebbar, wie die beiden Entriegelungs-Elemente 47, 48 miteinander in Eingriff stehen. Sobald das erste Teil 16 der Zahnstange 14 soweit in Öffnungs-Richtung 36 verschoben wird, dass das zweite Entriegelungs-Element 48 nicht mehr mit dem ersten Entriegelungs-Element 47 in Eingriff steht, kommt die Verriegelungs-Nase 44 am Verriegelungs-Hebel 43 mit der Verriegelungs-Kerbe 46 im zweiten Teil 17 der Zahnstange 14 in Eingriff und verriegelt die Verschiebbarkeit der beiden Teile 16, 17 der Zahnstange 14 gegeneinander.At the locking lug 44 opposite end of the locking lever 43, this has a trained as a slope first unlocking element 47. The first unlocking element 47 is arranged transversely to the actuating direction 35. The first unlocking element 47 is in particular designed such that it interacts with a displacement of the rack 14 in the actuating direction 35 from a certain position of the rack 14 with a door 4 mounted on the second unlocking element 48. The second unlocking element 48 is designed as a wedge-shaped attachment. The latter is arranged at a distance from the toothed rack 14 on the door 4 such that it can be brought into engagement with the inclined first unlocking element 47 only when the toothed rack 14 is displaced in the actuating direction 35. Upon a displacement of the rack in the actuating direction 35, the second unlocking element 48 comes as in Fig. 9 shown engages from a certain position of the first part 16 of the rack 14 with the first unlocking element 47 of the locking lever 43, whereby it is pivoted about the locking lever axis 45 so that the locking lug 44 at the locking Lever 43 is pulled out of the locking notch 46, and thus the locking of the first part 16 of the rack 14 is lifted against the second part 17 of the rack 14. The two parts 16, 17 of the rack 14 are thus unlocked for further displacement of the second part 17 of the rack 14 in the operating direction 35 against each other. Conversely, the two parts 16, 17 of the rack 14 at a displacement thereof against the operating direction 35 only against each other as long as the two unlocking elements 47, 48 are engaged with each other. As soon as the first part 16 of the rack 14 is moved so far in the opening direction 36 that the second unlocking element 48 is no longer in engagement with the first unlocking element 47, the locking nose comes 44 on the locking lever 43 with the locking notch 46 in the second part 17 of the rack 14 engages and locks the displaceability of the two parts 16, 17 of the rack 14 against each other.

Die beiden Teile 16, 17 der Zahnstange 14 sind somit abgesehen von der Betätigung der Klinke 25 des Öffners 24 zum Überwinden des Anfangs-Widerstandes beim Öffnen der Tür 4 über annähernd den gesamten Schwenkbereich der Tür 4 gegenüber dem Gehäuse 1 relativ zueinander unverschiebbar. Ein Leerhub zum Betätigen der Klinke 25 ist somit lediglich im Bereich eines kleinen Öffnungswinkels von weniger als 10°, insbesondere weniger als 5° der Tür vorhanden.The two parts 16, 17 of the rack 14 are thus, apart from the operation of the pawl 25 of the opener 24 to overcome the initial resistance when opening the door 4 over almost the entire pivoting range of the door 4 relative to the housing 1 relative to each other immovable. An idle stroke for actuating the pawl 25 is thus only in the range of a small opening angle of less than 10 °, in particular less than 5 ° of the door available.

Selbstverständlich kann eine entsprechende Verriegelungs-Einrichtung 42 auch bei der Ausführungsform gemäß der Figuren 3 bis 6 vorgesehen sein.Of course, a corresponding locking device 42 also in the embodiment according to the FIGS. 3 to 6 be provided.

Im Folgenden wird unter Bezugnahme auf die Fig. 10 und 11 ein viertes Ausführungsbeispiel der Erfindung beschrieben. Identische Teile erhalten dieselben Bezugszeichen wie beim ersten Ausführungsbeispiel, auf dessen Beschreibung hiermit verwiesen wird. Konstruktiv unterschiedliche, jedoch funktional gleichwertige Teile erhalten dieselben Bezugszeichen mit einem nachgestellten c. Der wesentliche Unterschied gegenüber dem ersten Ausführungsbeispiel besteht darin, dass die Antriebs-Einrichtung 5c einen über zwei Rollen 49, 50 verlaufenden Riemen 51 aufweist. Der Riemen 51 ist elastisch ausgebildet. Der Riemen 51 kann auch als Zahnriemen, Seil oder als Kette ausgebildet sein. Die beiden Rollen 49, 50 sind drehbar, insbesondere drehantreibbar an der Tür 4 angeordnet. Zwischen den beiden Rollen 49, 50 verläuft der Riemen 51 im Wesentlichen geradlinig, weshalb die Antriebs-Einrichtung 5c wie bei den vorhergehenden Ausführungsbeispielen als Linearantrieb bezeichnet wird.The following is with reference to the 10 and 11 A fourth embodiment of the invention is described. Identical parts are given the same reference numerals as in the first embodiment, to the description of which reference is hereby made. Structurally different, but functionally equivalent parts receive the same reference numerals with a c. The essential difference with respect to the first exemplary embodiment is that the drive device 5c has a belt 51 running over two rollers 49, 50. The belt 51 is elastic. The belt 51 may also be formed as a toothed belt, rope or chain. The two rollers 49, 50 are rotatable, in particular rotatably drivable arranged on the door 4. Between the two rollers 49, 50 of the belt 51 is substantially rectilinear, which is why the drive means 5c as in the previous embodiments is referred to as a linear drive.

Das Scharnier 3c umfasst den ersten, über das erste Gelenk 10 an der Tür 4 angelenkten Schenkel 8c, den zweiten, über das zweite Gelenk 11 am Gehäuse 1 und über das dritte Gelenk 12 am ersten Schenkel 8c angelenkten zweiten Schenkel 9c und einen über das vierte Gelenk 13 am ersten Schenkel 8c angelenkten dritten Schenkel 52. Der dritte Schenkel 52 ist über ein fünftes Gelenk 53 verschwenkbar mit einem mittels des Riemens 51 verschiebbar geführten Schlitten 54 verbunden. Der erste Schenkel 8c ist bogenförmig, das heißt gekrümmt ausgebildet. Ebenso ist der dritte Schenkel 52 bogenförmig, gekrümmt ausgebildet.The hinge 3c comprises the first leg 8c hinged to the door 4 via the first hinge 10, the second leg 9c hinged via the second hinge 11 to the housing 1 and via the third hinge 12 to the first leg 8c and one via the fourth Joint 13 on the first leg 8c hinged third leg 52. The third leg 52 is connected via a fifth joint 53 pivotally connected to a slide 51 slidably guided by the belt 54. The first leg 8c is arcuate, that is curved. Likewise, the third leg 52 is curved, curved.

Außerdem umfasst das Scharnier 3c eine Spannrolle 55, welche am vierten Gelenk 13 drehbar gelagert ist. Der Riemen 51 ist über die Spannrolle 55 geführt. Im geschlossenen Zustand der Türe 4 ist der Riemen 51 von der Spannrolle 55 aus seinem geradlinigen Verlauf zwischen den Rollen 49, 50 ausgelenkt und somit vorgespannt. Durch eine Erhöhung der Spannung im Riemen 51 beim Öffnen der Tür 4 wird die Spannrolle 55 gegen das Gehäuse 1 gedrückt, wodurch der Anfangs-Widerstand beim Öffnen der Tür 4 überwunden wird. Hierbei wird das vierte Gelenk 13 durch eine überstreckte Stellung des ersten und dritten Schenkels 8c, 52 zueinander hindurchgeführt, das heißt eine Totpunktstellung dieser beiden Schenkel zueinander wird durchschritten. Die Totpunktstellung des ersten und dritten Schenkels 8c, 52 zueinander stellt ein sicheres Schließen der Tür 4 sicher. Nach Durchschreiten des Totpunkts führt eine Verschiebung des Schlittens 54 mittels des Riemens 51 entlang der Öffnungs-Richtung 36c zu einer Verschwenkung der Tür 4 um die Schwenk-Achse 2 und somit zu einem Öffnen der Tür.In addition, the hinge 3c comprises a tension roller 55, which is rotatably mounted on the fourth joint 13. The belt 51 is guided over the tension roller 55. In the closed state of the door 4, the belt 51 is deflected by the tension roller 55 from its rectilinear course between the rollers 49, 50 and thus biased. By increasing the tension in the belt 51 when opening the door 4, the tension roller 55 is pressed against the housing 1, whereby the initial resistance in opening the door 4 is overcome. Here, the fourth joint 13 is passed through an overstretched position of the first and third legs 8c, 52 to each other, that is, a dead center position of these two legs to each other is passed. The dead center position of the first and third leg 8c, 52 to each other ensures a safe closing of the door 4. After passing through the dead center, a displacement of the carriage 54 by means of the belt 51 along the opening direction 36c leads to a pivoting of the door 4 about the pivot axis 2 and thus to an opening of the door.

Im Folgenden wird unter Bezugnahme auf die Fig. 12 bis 14 ein fünftes Ausführungsbeispiel der Erfindung beschrieben. Identische Teile erhalten dieselben Bezugszeichen wie bei dem vierten Ausführungsbeispiel, auf dessen Beschreibung hiermit verwiesen wird.The following is with reference to the Fig. 12 to 14 A fifth embodiment of the invention is described. Identical parts are given the same reference numerals as in the fourth embodiment, the description of which is hereby incorporated by reference.

Der wesentliche Unterschied zum vierten Ausführungsbeispiel besteht darin, dass anstelle der Spannrolle ein vierter Schenkel 56, welcher über ein sechstes Gelenk 57 am dritten Schenkel 52 angelenkt ist, vorgesehen ist.The essential difference from the fourth embodiment is that instead of the tension roller, a fourth leg 56, which is articulated via a sixth joint 57 on the third leg 52, is provided.

Am freien Ende des vierten Schenkels 56 ist eine Abstütz-Rolle 58 angeordnet, welche im geschlossenen Zustand der Tür 4 am Gehäuse 1 anliegt. Im Bereich des sechsten Gelenks 57 ist eine Feder 59 vorgesehen, welche beim Schließen der Tür 4 vorgespannt wird und den vierten Schenkel 56 mit der Abstütz-Rolle 58 gegen das Gehäuse 1 drückt.At the free end of the fourth leg 56, a support roller 58 is arranged, which bears against the housing 1 in the closed state of the door 4. In the region of the sixth joint 57, a spring 59 is provided, which is biased when closing the door 4 and presses the fourth leg 56 with the support roller 58 against the housing 1.

In einer weiteren, nicht dargestellten Ausführungsform ist es vorgesehen, den Öffner 24 elektromagnetisch auszubilden. Dies ist insbesondere bei Türen mit einem magnetischen Verschluss vorteilhaft. Zum Öffnen der Tür 4 wird bei dieser Ausführungsform im Öffner 24 ein Magnetfeld erzeugt, welches mit einem Magnetfeld eines im Gehäuse 1 integrierten PermanentMagneten gerade so zusammenwirkt, dass die Tür 4 hierdurch geöffnet wird.In a further, not shown embodiment, it is provided to form the opener 24 electromagnetically. This is particularly advantageous for doors with a magnetic closure. To open the door 4, a magnetic field is generated in the opener 24 in this embodiment, which cooperates with a magnetic field of a permanent magnet integrated in the housing 1 just so that the door 4 is thereby opened.

Claims (11)

  1. Assembly comprising
    a. a housing (1) for a refrigerator and/or a freezer;
    b. a door (4) that is articulated to the housing (1) so as to be pivotable about a pivot axis (2) of a hinge (3; 3c) of the assembly, wherein the hinge (3; 3c) is articulated to the door (4) by means of a first joint (10) so as to be pivotable about an axis parallel to the pivot axis (2), and
    c. at least one drive device (5; 5c) for pivoting the door (4) in relation to the housing (1),
    d. wherein the drive device (5; 5c) comprises a drive unit (60) by means of which, in order to open the door (4) and to close the door (4), a torque is applicable to the door (4) in relation to the hinge axis (2) by means of a force transmission means (14; 51) in such a way that the at least one force transmission means (14; 51) is displaceable linearly along an opening direction (36) of the force transmission means (14; 51),
    characterised in that
    - the drive device (5; 5c) is integrated in the door (4),
    - the hinge (3; 3c) comprises a first leaf (8; 8c) articulated to the door (4) by means of the first joint (10), and a second leaf (9; 9c) articulated to the housing (1) by means of a second joint (11),
    - the first leaf (8; 8c) and the second leaf (9; 9c) being connected to each other, via a third joint (12), in such a way as to be pivotable, and
    - the at least one force transmission means (14; 51) is articulated to the first leaf (8; 8c) of the hinge (3; 3c).
  2. Assembly according to claim 1, further characterised in that an opener (24) is provided to move the door (4) out of a closed position.
  3. Assembly according to claim 2, characterised in that the opener (24) is actuable manually and by means of the drive device (5; 5c).
  4. Assembly according to any one of the preceding claims, characterised in that the at least one force transmission means (14; 51) is configured to be coupled to the drive unit (60) via a coupling.
  5. Assembly according to any one of the preceding claims, characterised in that the drive device (5; 5c) is configured as a linear drive.
  6. Assembly according to any one of the preceding claims, characterised in that the force transmission means (14) is configured as a rack.
  7. Assembly according to claim 6, characterised in that the rack (14) is configured such as to comprise at least two parts, wherein the at least first rack part (16) is displaceable in relation to the at least second rack part (17).
  8. Assembly according to any one of claims 1 to 5, characterised in that the force transmission means (51) is configured as a belt, in particular as a toothed belt.
  9. Assembly according to any one of the preceding claims, characterised in that a sensor (34), in particular an angle sensor coupled to the pivot axis (2), is provided to detect an open position of the door (4).
  10. Assembly according to any one of the preceding claims, characterised in that a control unit (61), which is connected to the drive device (5; 5c) in a data-transmitting manner, is provided for controlling the drive device (5; 5c).
  11. Assembly according to any one of the preceding claims, characterised in that at least one parameter of the pivotability of the door (4) is settable by means of the control unit (61).
EP09008179.5A 2008-07-24 2009-06-23 Drive device for refrigerator doors Not-in-force EP2148035B8 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102008034809A DE102008034809A1 (en) 2008-07-24 2008-07-24 Drive device for refrigerator doors

Publications (4)

Publication Number Publication Date
EP2148035A2 EP2148035A2 (en) 2010-01-27
EP2148035A3 EP2148035A3 (en) 2012-11-07
EP2148035B1 true EP2148035B1 (en) 2017-12-13
EP2148035B8 EP2148035B8 (en) 2018-02-07

Family

ID=41227567

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09008179.5A Not-in-force EP2148035B8 (en) 2008-07-24 2009-06-23 Drive device for refrigerator doors

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US (1) US8347553B2 (en)
EP (1) EP2148035B8 (en)
CN (1) CN101634512A (en)
DE (1) DE102008034809A1 (en)
ES (1) ES2660588T3 (en)
RU (1) RU2009127307A (en)

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Also Published As

Publication number Publication date
EP2148035B8 (en) 2018-02-07
EP2148035A3 (en) 2012-11-07
CN101634512A (en) 2010-01-27
RU2009127307A (en) 2011-01-27
DE102008034809A1 (en) 2010-01-28
ES2660588T3 (en) 2018-03-23
US20100018122A1 (en) 2010-01-28
EP2148035A2 (en) 2010-01-27
US8347553B2 (en) 2013-01-08

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