EP3390917B1 - Gargerät mit einer türöffnungsvorrichtung zum automatischen verbringen einer tür in eine zwischenstellung sowie verfahren zum öffnen einer tür eines gargeräts - Google Patents

Gargerät mit einer türöffnungsvorrichtung zum automatischen verbringen einer tür in eine zwischenstellung sowie verfahren zum öffnen einer tür eines gargeräts Download PDF

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Publication number
EP3390917B1
EP3390917B1 EP16797937.6A EP16797937A EP3390917B1 EP 3390917 B1 EP3390917 B1 EP 3390917B1 EP 16797937 A EP16797937 A EP 16797937A EP 3390917 B1 EP3390917 B1 EP 3390917B1
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EP
European Patent Office
Prior art keywords
door
spring
cooking appliance
intermediate position
hinge
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.)
Active
Application number
EP16797937.6A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP3390917A2 (de
Inventor
Tobias Schmidt
Ralf Grobleben
Thomas Rembold
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.)
BSH Hausgeraete GmbH
Original Assignee
BSH Hausgeraete 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 BSH Hausgeraete GmbH filed Critical BSH Hausgeraete GmbH
Priority to PL16797937T priority Critical patent/PL3390917T3/pl
Publication of EP3390917A2 publication Critical patent/EP3390917A2/de
Application granted granted Critical
Publication of EP3390917B1 publication Critical patent/EP3390917B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C15/00—Details
    • F24C15/02—Doors specially adapted for stoves or ranges
    • F24C15/026—Doors specially adapted for stoves or ranges stowing of door in open position
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05D—HINGES OR SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS
    • E05D15/00—Suspension arrangements for wings
    • E05D15/56—Suspension arrangements for wings with successive different movements
    • E05D15/58—Suspension arrangements for wings with successive different movements with both swinging and sliding movements
    • E05D15/582—Suspension arrangements for wings with successive different movements with both swinging and sliding movements with horizontal swinging axis
    • 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
    • E05F1/00—Closers or openers for wings, not otherwise provided for in this subclass
    • E05F1/08—Closers or openers for wings, not otherwise provided for in this subclass spring-actuated, e.g. for horizontally sliding wings
    • E05F1/10—Closers or openers for wings, not otherwise provided for in this subclass spring-actuated, e.g. for horizontally sliding wings for swinging wings, e.g. counterbalance
    • E05F1/1041—Closers or openers for wings, not otherwise provided for in this subclass spring-actuated, e.g. for horizontally sliding wings for swinging wings, e.g. counterbalance with a coil spring perpendicular to the pivot axis
    • E05F1/105—Closers or openers for wings, not otherwise provided for in this subclass spring-actuated, e.g. for horizontally sliding wings for swinging wings, e.g. counterbalance with a coil spring perpendicular to the pivot axis with a compression spring
    • E05F1/1058—Closers or openers for wings, not otherwise provided for in this subclass spring-actuated, e.g. for horizontally sliding wings for swinging wings, e.g. counterbalance with a coil spring perpendicular to the pivot axis with a compression spring for counterbalancing
    • 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
    • E05F1/00—Closers or openers for wings, not otherwise provided for in this subclass
    • E05F1/08—Closers or openers for wings, not otherwise provided for in this subclass spring-actuated, e.g. for horizontally sliding wings
    • E05F1/10—Closers or openers for wings, not otherwise provided for in this subclass spring-actuated, e.g. for horizontally sliding wings for swinging wings, e.g. counterbalance
    • E05F1/12—Mechanisms in the shape of hinges or pivots, operated by springs
    • E05F1/1246—Mechanisms in the shape of hinges or pivots, operated by springs with a coil spring perpendicular to the pivot axis
    • E05F1/1253—Mechanisms in the shape of hinges or pivots, operated by springs with a coil spring perpendicular to the pivot axis with a compression spring
    • E05F1/1261—Mechanisms in the shape of hinges or pivots, operated by springs with a coil spring perpendicular to the pivot axis with a compression spring for counterbalancing
    • 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
    • E05F1/00—Closers or openers for wings, not otherwise provided for in this subclass
    • E05F1/08—Closers or openers for wings, not otherwise provided for in this subclass spring-actuated, e.g. for horizontally sliding wings
    • E05F1/10—Closers or openers for wings, not otherwise provided for in this subclass spring-actuated, e.g. for horizontally sliding wings for swinging wings, e.g. counterbalance
    • E05F1/12—Mechanisms in the shape of hinges or pivots, operated by springs
    • E05F1/1246—Mechanisms in the shape of hinges or pivots, operated by springs with a coil spring perpendicular to the pivot axis
    • E05F1/1269—Mechanisms in the shape of hinges or pivots, operated by springs with a coil spring perpendicular to the pivot axis with a traction spring
    • E05F1/1276—Mechanisms in the shape of hinges or pivots, operated by springs with a coil spring perpendicular to the pivot axis with a traction spring for counterbalancing
    • 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
    • E05D—HINGES OR SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS
    • E05D15/00—Suspension arrangements for wings
    • E05D15/56—Suspension arrangements for wings with successive different movements
    • E05D15/58—Suspension arrangements for wings with successive different movements with both swinging and sliding movements
    • E05D2015/586—Suspension arrangements for wings with successive different movements with both swinging and sliding movements with travelling hinge parts
    • 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
    • E05F1/00—Closers or openers for wings, not otherwise provided for in this subclass
    • E05F1/08—Closers or openers for wings, not otherwise provided for in this subclass spring-actuated, e.g. for horizontally sliding wings
    • E05F1/10—Closers or openers for wings, not otherwise provided for in this subclass spring-actuated, e.g. for horizontally sliding wings for swinging wings, e.g. counterbalance
    • E05F1/1041—Closers or openers for wings, not otherwise provided for in this subclass spring-actuated, e.g. for horizontally sliding wings for swinging wings, e.g. counterbalance with a coil spring perpendicular to the pivot axis
    • E05F1/1066—Closers or openers for wings, not otherwise provided for in this subclass spring-actuated, e.g. for horizontally sliding wings for swinging wings, e.g. counterbalance with a coil spring perpendicular to the pivot axis with a traction spring
    • E05F1/1075—Closers or openers for wings, not otherwise provided for in this subclass spring-actuated, e.g. for horizontally sliding wings for swinging wings, e.g. counterbalance with a coil spring perpendicular to the pivot axis with a traction spring for counterbalancing
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
    • E05Y2201/00—Constructional elements; Accessories therefor
    • E05Y2201/40—Motors; Magnets; Springs; Weights; Accessories therefor
    • E05Y2201/404—Function thereof
    • E05Y2201/422—Function thereof for opening
    • E05Y2201/426—Function thereof for opening for the initial opening movement
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
    • E05Y2201/00—Constructional elements; Accessories therefor
    • E05Y2201/60—Suspension or transmission members; Accessories therefor
    • E05Y2201/622—Suspension or transmission members elements
    • E05Y2201/644—Flexible elongated pulling elements
    • E05Y2201/654—Cables
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
    • E05Y2800/00—Details, accessories and auxiliary operations not otherwise provided for
    • E05Y2800/20—Combinations of elements
    • E05Y2800/22—Combinations of elements of not identical elements of the same category, e.g. combinations of not identical springs
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
    • E05Y2800/00—Details, accessories and auxiliary operations not otherwise provided for
    • E05Y2800/20—Combinations of elements
    • E05Y2800/23—Combinations of elements of elements of different categories
    • E05Y2800/236—Combinations of elements of elements of different categories of motors and springs
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
    • E05Y2900/00—Application of doors, windows, wings or fittings thereof
    • E05Y2900/20—Application of doors, windows, wings or fittings thereof for furniture, e.g. cabinets
    • E05Y2900/212—Doors disappearing in pockets in the furniture body
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
    • E05Y2900/00—Application of doors, windows, wings or fittings thereof
    • E05Y2900/30—Application of doors, windows, wings or fittings thereof for domestic appliances
    • E05Y2900/308—Application of doors, windows, wings or fittings thereof for domestic appliances for ovens

Definitions

  • the invention relates to a cooking device with a door for closing a cooking space of the cooking device.
  • the door can be lowered into a storage space in a housing of the cooking appliance.
  • the cooking appliance also comprises a door opening device for automatically moving the door, at least in regions, over an entire path of movement measured between a closed position and an open position of the door.
  • the invention also relates to a method for opening such a door of a cooking appliance.
  • the path of movement of the door is relatively complex.
  • the hinges required for this and the corresponding movement control of the door into the storage space are also more complex. Since such a door of a cooking appliance also has a relatively large weight due to thermal requirements and stability requirements, the movement control must be designed here in such a way that no undesirably hard impact occurs.
  • such a door can be moved via an electric drive independently of the user guidance and thus the manual direct movement of the door by a user.
  • an electric drive is, for example, from DE 199 06 913 A1 known.
  • the electric drive is correspondingly large and designed to be high in terms of its electrical power. Because precisely with a relatively heavy door, forces occur on the path of movement which then have to be practically absorbed by the electric drive in order to be able to guide the movement over this entire path via this drive.
  • Such large-sized electric drives require a lot of space, a lot of energy and are therefore also very cost-intensive.
  • the EP 2 574 712 A1 discloses a household appliance with a receiving space and with a door, the door being sunk into the household appliance in the open state.
  • the door can be moved from a closed position into an intermediate position by means of an ejector element designed as a spring.
  • the EP 2 597 378 also discloses a household appliance with a receiving space and with a door, the door being sunk into the household appliance in the open state.
  • the door can be moved from a closed position into an intermediate position by means of an ejector element designed as a spring.
  • the object of the present invention is to create a cooking device and a method for opening a door of such a cooking device, in which the moving of the door into the storage space is improved with at least regionally automatic movement control of the door.
  • a cooking device comprises a door for closing a cooking space of the cooking device.
  • the cooking appliance also includes a housing in which a storage space is formed, into which the door can be lowered when it is opened.
  • the cooking appliance also includes a door opening device for automatically moving the door and thus a user-independent movement guidance of the door.
  • the door opening device is designed for this automatic movement of the door, at least in regions over an entire movement path, measured between a closed position and an open position of the door.
  • the intermediate position is characterized in that the further movement of the door from the intermediate position into the open position retracted into the stowage space is also automatic, but without Support of the actuation unit and thus only takes place through the force of gravity of the door itself.
  • the movement of the door from the closed position to the open position is in particular completely automatic. This means that this movement of the door takes place without directly attacking the door and thus without generating a tensile force on the door from a user.
  • the door can therefore be moved independently of the user.
  • the movement control is initiated via a drive motor of the actuating unit only over a very specific partial path of the entire movement path between the closed position and the open position.
  • Such a configuration allows the actuation unit to be designed to be small, in particular with its motorized drive. As a result, installation space can be saved and the actuating unit does not have to be designed so strongly with regard to its motorized effect in order to be able to absorb the forces that occur precisely when the door is in larger tilted positions. As a result, there are also lower demands on the actuation unit, so that more energy-efficient operation of this motorized drive concept is achieved.
  • control element can be realized in a variety of designs. It can be a touch-sensitive control element. However, it can also be a push button or a toggle switch or the like. Likewise, for example, the operating element can also be designed to recognize a gesture and can thus be actuated without contact. It can also be provided that the operating element is designed for voice recognition and a corresponding voice command is issued by a user in order to initiate this automatic opening process.
  • the actuation unit has an electromechanical device which is connected to a rocker arm with at least one cable pull.
  • This rocker arm is connected in particular to a hinge arm of a hinge.
  • the hinge enables the door to be pivoted and retracted into the storage space.
  • the rocker arm is mechanically coupled to this hinge arm, whereby the rocker arm can be pivoted about a pivot axis by a tensile force acting on the rocker arm via the cable and, depending on this pivoting movement, the hinge arm can be pivoted in such a way that the door can automatically be tilted from the closed position into the intermediate position is.
  • the actuation unit enables, on the one hand, a robust configuration, so that corresponding movement sequences and force transmissions can also be reliably and permanently enabled.
  • the movement control and the movement initiation are made possible here very precisely. This avoids undesirable tolerances in the movement of the door. This refinement also prevents undesired tolerances from occurring at the respective coupling points which could then also add up.
  • the actuation unit also includes a motor drive or a motor with which the movement of the cable pull is achieved. This configuration then also enables the motor, in particular, to be arranged at a distance from the hinge arm and also from the rocker arm. As a result, space-specific improvements can be achieved.
  • the design is free of large components of the actuation unit precisely at the points at which the hinge is then also arranged. As a result, the entire guide device of the door can be maintained unchanged and is not subject to any structural restrictions. In addition, it is then also possible that the motor of the electromechanical device can be arranged at a location that also has no negative effects on the function of this motor with regard to thermal loads on the cooking appliance during operation.
  • the hinge has a hinge housing to which the hinge arm is rotatably connected and the rocker arm is pivotably arranged on the hinge housing.
  • the door is directly connected to the hinge arm. Since the rocker arm is then coupled directly to the hinge housing, corresponding forces can also be transmitted in an improved manner here, since the hinge housing is also a more robust and larger component than the hinge arm. In addition, this specific coupling point in turn does not impair the connection concept between the hinge arm and the door and the corresponding relative movements when moving the door between the door and the hinge arm are not impaired.
  • the rocker arm is also arranged to be pivotable relative to the hinge arm.
  • the intermediate position is reached at a tilt angle between 15 ° and 30 °, in particular between 18 ° and 22 °, in particular at 20 °, to the closed position of the door.
  • the closed position of the door is that in which the door is oriented vertically. Due to the relatively small angular interval starting from the closed position, the motor drive power via the actuation unit is significantly reduced. Nevertheless, a position is reached in which the weight of the door acts on the further movement starting from the intermediate position into the open position or initiates further independent movement.
  • the hinge arm is a one-piece bracket which preferably has a U-shape.
  • two rollers are arranged at a distance from one another and are rotatable. With these rollers, the hinge arm engages in guide tracks that are formed on the narrow vertical side edges of the door. This results in a mechanically stable guide, while still allowing the possibility of relative movement between the hinge arm and the door without jolting. This has particular advantages when moving the door into the stowage space and the movement paths that occur between the door and the hinge arm.
  • guide tracks are formed on the housing on the side walls that delimit the storage space, in each of which a guide carriage is guided.
  • the guide carriages formed on opposite sides are preferably connected to a connecting rod so that the position relative to one another can be maintained and no tilting or twisting relative to one another occurs with respect to the movement.
  • This positional coupling between the guide carriages enables jolt-free and uniform movement along the guide tracks in the storage space on walls delimiting opposite sides.
  • the door is advantageously connected at its lower end to this guide carriage, in particular rotatably connected to it.
  • the guide carriages are separate components from the hinge arms.
  • the guide carriages are connected to the door in a stationary and thus non-displaceable manner, with an axis of rotation being formed at the connection point, around which the door can then rotate relative to a guide carriage.
  • the hinge arms with the rollers already explained above enable not only a relative movement with respect to a rotation to one another, but also a relative displacement between the door and a hinge arm due to the already mentioned guide grooves or guide tracks in the door, which are also formed on the side edges.
  • the electromechanical device has a motor drive.
  • the electromechanical device also comprises a lifting wheel rotatable by the motor drive and a lifting rod connected to the lifting wheel.
  • the lifting rod can be moved linearly by rotating the lifting wheel, in particular it can be displaced upwards and downwards in the vertical direction.
  • the cable pull coupled to the lifting rod can be actuated.
  • the movement of the rocker arm can be very dosed and finely adjusted, which in turn has a corresponding effect on a correspondingly dosed movement of the door.
  • a sudden opening of the door or a related rebound or wobbling of the door to and fro is avoided.
  • the force generated by the motor drive is then also transmitted continuously and without jolting precisely through the lifting wheel and the lifting rod.
  • a cable lever to which the at least one cable pull is attached, is connected to the lifting rod.
  • the movement of the lifting rod actuates the cable lever that can be moved with it and thus exerts a corresponding tensile force on the cable pull.
  • this one single complete revolution of the lifting wheel automatically returns the rocker arm to its starting position. It is precisely through this specific rotary movement of a single complete turn of the lifting wheel that the required maximum travel of the rocker arm starting from its starting position or basic position into a rotary position, in which the hinge arm is then moved so that the door is in the intermediate position, is achieved
  • the rocker arm is then automatically returned to this basic position from its maximum position pivoted in this regard.
  • the hinge housing has a main spring with a first spring rate, the main spring being coupled to an additional spring with a second spring rate lower than the first spring rate.
  • the hinge housing of this hinge is on the path of movement between the closed position of the door and the intermediate position of the door relative to a fixed connection point of the Movable additional spring.
  • the hinge is designed to pivot and retract the door into the storage space.
  • this embodiment also ensures that the main spring is inactive in particular on the first movement path section between the closed position and the intermediate position and thus does not yet act with a spring force, on the other hand, the main spring in a particularly advantageous manner on the Acts second movement path section between the intermediate position and the open position of the door.
  • the second movement path section in which the further tilting of the door is caused by the force of gravity of the door itself, in such a way that the door does not tilt down without braking and thus an undesirably hard impact occurs, but instead counteracting spring force of the main spring, this merely gravity-initiated tilting movement of the door downwards is metered and cushioned.
  • the main spring is connected to the auxiliary spring via a coupling rod.
  • This direct connection also creates a direct interaction between the two springs. This means that power transmissions can take place very directly and without distortion.
  • the coupling rod is inherently rigid, as a result of which these advantages mentioned above are achieved in an even better way.
  • the main spring and the additional spring are connected in such a way that on the movement path section between the closed position of the door and the intermediate position of the door, the auxiliary spring is compressible and the main spring is uncompressed.
  • the main spring Since the two spring stiffness of the main spring and the additional spring are selected individually and the first spring of the main spring is just greater than the second spring stiffness of the additional spring, the main spring remains virtually unchanged and compressed or expanded during this movement path between the closed position and the intermediate position of the door not doing it.
  • a longitudinal axis of the main spring is arranged parallel to or in a straight extension to a longitudinal axis of the additional spring.
  • the additional spring is arranged in a spring pot which is positioned in a stationary manner.
  • the additional spring is also arranged in a protected manner to a certain extent, and bending to the side is prevented even better.
  • the additional spring is guided by the spring cup with regard to its compression and expansion.
  • this spring cup then also forms a robust mechanical stop for the main spring if it then rests against the spring cup with the hinge housing when the intermediate position is reached and the main spring then expands on further movement on the second movement path section of the door.
  • the hinge housing is arranged at a distance from the spring cup in the closed position of the door and that the hinge housing is arranged in contact with the spring cup when the intermediate position is reached.
  • the hinge housing is then also moved relative to the additional spring and thus to its spring cup and thus moved towards the spring cup, in particular moved in a straight line in this regard.
  • the spring cup thus forms a stop for the hinge housing and the main spring arranged therein.
  • the hinge housing is then also held in a secure position for the further movement of the door towards the open position, so that the basic position of the main spring as such does not change as an entire spring on this further path of movement of the door towards the open position, but only the main spring is expanded in itself, whereby the desired spring force is applied to hold the door against an undesirably hard stop when moving into the stowage space. From the intermediate position onwards, the hinge housing is in block with the spring cup.
  • the main spring is inactive on the movement path between the closed position and the intermediate position of the door and thus on this first movement path section with respect to a spring force caused by a change in length.
  • the main spring is expandable on the movement path of the door between the intermediate position and the open position and thus also the above-mentioned second movement path section and a spring force occurring due to the expansion counteracts the gravitational movement of the door.
  • At least one lifting magnet is formed in the actuation unit, which then also enables the automatic movement of the door between the closed position and the intermediate position.
  • at least one lifting magnet is formed in the actuation unit, which then also enables the automatic movement of the door between the closed position and the intermediate position.
  • the invention also relates to a method for opening a door of a cooking device, in which the door is sunk into a stowage space in a housing of the cooking device.
  • the door is automatically moved with a door opening device of the cooking appliance, at least in some areas, over an entire movement path measured between a closed position and an open position of the door.
  • An essential idea of the method according to the invention is to be seen in the fact that, starting from the closed position, the door is automatically tilted only to an intermediate position with an actuating unit of the door opening device.
  • the intermediate position is characterized in that the further movement of the door from the intermediate position into the open position retracted into the stowage space is carried out automatically and without the assistance of the actuation unit and thus also without motorized drive only by the force of gravity of the door itself and thus by its weight.
  • the automatic movement of the door from the closed position into the intermediate position takes place in particular in a motor-driven manner or via a lifting magnet device.
  • a cooking device 1 designed as a baking oven is shown in a schematic perspective illustration.
  • the cooking appliance 1 comprises a housing 2 in which a cooking space is formed which is delimited by a muffle (not shown). Food can be placed in the cooking space for preparation.
  • the cooking chamber can be closed at the front by a door 3, which is shown in Fig. 1 shown in the closed position.
  • a handle 4 is formed on the front of the door 3.
  • the oven comprises an operating device 5, which has a display unit 6 and operating elements 7 and 8 in terms of position and display, only by way of example.
  • cooking zones 9, 10, 11 and 12 which are only shown as examples with regard to position and number, are also shown.
  • the door 3 can be pushed or sunk into the housing 2 in its lower region 13, which is the case when the door 3 is transferred from the FIG Fig. 1 the closed position shown to the fully open position is the case.
  • the door 3 is then arranged sunk in a free space of the housing 2, with this free space forming a storage space 14 arranged under the cooking space and separated from it by a corresponding partition.
  • the door 3 is connected to door hinges 15 and 16, which are shown and identified by way of example, and can be pivoted via these and can be retracted and extended into the storage space 14 mentioned.
  • Fig. 2 the cooking appliance 1 is shown in the lower area with the door 3 partially open in a schematic and only partial side view with regard to the components present.
  • a bearing unit 17 of a hinge 15 or 16 is shown.
  • the hinges 15 and 16 are designed in particular to be structurally identical and functionally identical, so that the following explanation of one of the two hinges 15 and 16 also applies to the other.
  • the hinges 15 and 16 have a respective hinge housing 25 in addition to a bearing unit 17 provided in each case. These hinges 15 and 16 are in particular also each assigned to a guide device 18 with regard to the components and the functions.
  • the door 3 is movement-guided by means of these guide devices 18, which are also constructed in particular identically, and thereby correspondingly coupled so that it is guided into and out of the storage space 14.
  • the bearing unit 17 comprises a particularly U-shaped bearing bracket or hinge arm 17a.
  • the hinge arm 17a is preferably rotatable about a pivot point which is on an axis of rotation A, which is in Fig. 2 extends perpendicular to the plane of the figure, is arranged.
  • the bearing unit 17 is also connected to the hinge housing 25 and is pivotable relative to the hinge housing 25.
  • the bearing unit 17 comprises two guide elements 19 and 20, which are designed as rollers and are rotatably mounted on the hinge arm 17a.
  • a vertical height h is shown, which represents the extent of a technical part 21 which is associated with the guide device 18.
  • the technical part 21 describes in particular a component which then also has a groove or a guide track 22 in which a respective guide carriage 23 is guided when the door 3 slides into the stowage space 14.
  • the guide carriage 23 is associated with the guide device 18.
  • the door 3 is rotatably connected to the guide carriage 23 at its lower end. The pivot point is stationary on the door 3 and therefore cannot be shifted in position.
  • the hinge arm 17a is both rotatably coupled to the door 3 with respect to the door 3 and is also displaceable and can therefore be changed in its position as an entire component on the door 3.
  • a straight guide track 24 or a groove is formed on each side edge of the door 3, in which the guide elements 19 and 20 are received and slide along depending on the movement of the door 3.
  • Both opposite narrow vertical side edges of the door 3 each have such a guide track 24.
  • the hinge 15 there also includes a hinge housing 25, which is only shown in sketch form here.
  • the hinge housing 25 is rotatably connected to the hinge arm 17a.
  • a door opening device 26 is shown in a perspective illustration in the exemplary embodiment, with which the door 3 can be automatically brought from its closed position into an open position.
  • This automatic movement is divided into different concepts that bring about the automatism and these then act individually in different movement path sections.
  • This door opening device 26 can be operated via an operating element 27 ( Fig. 1 ) can be started.
  • the position and configuration of the operating element 27 in Fig. 1 is only to be understood as an example.
  • the operating element 27 can, for example, be a push button that is pressed by a user.
  • Fig. 3 it is also shown here that the storage space 14 is laterally limited by walls 28 and 29 of the technical part 21.
  • the already mentioned guide tracks 22 are each formed on the inner sides of these walls 28 and 29 facing the storage space.
  • the hinge housing 25 is in Fig. 3 Shown in the cut or broken state so that one can look inside.
  • the door opening device 26 in the embodiment shown has an actuating unit 31 with which the door 3 can be moved automatically.
  • This automatic movement thus means that the door 3 can still be opened by a user in a motor-driven manner without any specific action by a user of the door 3 and thus without any force generated, in particular tensile force on the door 3.
  • This actuation unit 31 is designed to automatically tilt the door 3, starting from the closed position, in particular by means of a motor, only to an intermediate position.
  • This intermediate position is characterized in that, at this point, the further movement of the door 3 from the intermediate position into the open position fully retracted into the stowage space 14 is automatic and without further assistance and thus without a motor drive by the actuation unit 31 solely by the weight of the door 3 itself takes place.
  • the actuation unit 31 comprises an electromechanical device 32.
  • the electromechanical device 32 has a motor drive or a motor 33.
  • this electromechanical device 32 comprises a lifting wheel 34 which is driven, in particular rotated, by the motor 33.
  • the electromechanical device 32 comprises an in particular straight lifting rod 35, which is connected to the lifting wheel 34.
  • a cable lever 36 is arranged on a lower end of the lifting rod 35 facing away from the lifting wheel 34.
  • the cable lever 36 is rotatably connected to this lower end of the lifting rod 35.
  • Two separate cables 37 and 38 are connected to this cable lever 36.
  • the cables 37 and 38 each run to rocker arms of the electromechanical device 32.
  • a rocker arm 39 is arranged on the hinge 15.
  • the rocker arm 39 is rotatable on the Hinge housing 25 is attached, in particular coupled to a coupling element 40, which can be a coupling pin, of the hinge arm 17a.
  • This coupling element 40 is fixedly attached to the hinge arm 17a, whereas the rocker arm 39 is also rotatably attached to the hinge arm 17a.
  • a rocker arm is also arranged on the hinge 16 and connected to the cable 37. As shown in the illustration Fig. 3 can be seen, the cable 38 is connected to the rocker arm 39.
  • the actuation unit 31 has a main spring 41 in the hinge housing 25.
  • the main spring 41 is connected to the hinge arm 17a via a connection 42.
  • a spring cup 43 is arranged in particular outside the hinge housing 25 and separately therefrom, which spring cup 43 is arranged in particular in the housing 2.
  • An additional spring 44 ( Fig. 5 ) arranged.
  • the auxiliary spring 44 has a second spring rate which is less than a first spring rate of the main spring 41.
  • the main spring 41 in the form of its, in particular, spiral spring, is arranged with respect to its longitudinal axis parallel or coaxially in series with the longitudinal axis of the additional spring 44, which is likewise designed in particular as a spiral spring.
  • the main spring 41 is connected to the auxiliary spring 44 via an inherently rigid coupling rod 45.
  • a rear end of the additional spring 44 is fixedly attached to a connection point 46, which is in particular in the spring cup 43.
  • Fig. 4 is the component arrangement according to Fig. 3 shown in a different perspective.
  • the door 3 is shown in the closed state. In particular, it is thus arranged in a vertically oriented manner here. In this closed state, a rear end 25 a of the hinge housing 25 is spaced apart from a front end 43 a of the spring cup 43 facing the hinge housing 25.
  • Fig. 6 the relevant operating position of the lifting wheel 34, the lifting rod 35 and the cable lever 36 is shown.
  • a user can actuate the operating element 27. This causes the automatic opening of the door 3 to start.
  • the drive 33 is then started via a control unit. It is then the lifting wheel 34 starting from the in Fig. 6 shown home position rotated. As a result, the lifting rod 35 is raised and the cable lever 36 is brought into an even more horizontal position in this regard. As a result of the movement and the associated change in position of the cable lever 36, the cables 37 and 38 are pulled. This in turn causes a corresponding tightening of the in Fig. 5 Drag levers 39 shown in the basic position.
  • this motor-driven, automatically generated movement of the door 3 takes place only up to this intermediate position.
  • the motorized movement is then no longer carried out subsequently from the intermediate position into the fully opened position of the door 3, which is retracted into the storage space 14.
  • the intermediate position of the door 3 the latter has namely reached a tilting position from which it tilts further downward by its own weight itself and thus also automatically by weight and then moves into the stowage space 14.
  • the motor 33 is inactive or deactivated.
  • the main spring 41 remains essentially, in particular completely, unchangeable in length and is thus neither compressed nor expanded.
  • the hinge housing 25 is displaced in the direction of the spring cup 43 until it is in the intermediate position of the door 3 according to FIG Fig. 7 strikes with the rear end 25a on the front end 43a of the spring cup 43. This is also in Fig. 7 shown.
  • the main spring 41 is expanded upon further opening movement of the door 3, the hinge housing 25 remaining in contact with the spring cup 43.
  • the expansion of the main spring 41 generates a spring force which acts against the force of gravity of the door 3, so that the door 3 does not tilt further downwards from the intermediate position into the open position without braking.
  • a certain cushioning or damping of the second movement path section of the door 3 from the intermediate position into the open position is achieved.
  • Fig. 8 the lifting wheel 34, the lifting rod 35 and the cable lever 36 are shown in the operating state and thus the position in which the door 3 is in the intermediate position.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • General Engineering & Computer Science (AREA)
  • Power-Operated Mechanisms For Wings (AREA)
  • Electric Ovens (AREA)
  • Closing And Opening Devices For Wings, And Checks For Wings (AREA)
EP16797937.6A 2015-12-18 2016-11-18 Gargerät mit einer türöffnungsvorrichtung zum automatischen verbringen einer tür in eine zwischenstellung sowie verfahren zum öffnen einer tür eines gargeräts Active EP3390917B1 (de)

Priority Applications (1)

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PL16797937T PL3390917T3 (pl) 2015-12-18 2016-11-18 Urządzenie do obróbki termicznej z układem otwierania drzwi do automatycznego umieszczenia drzwi w położeniu pośrednim i sposób otwierania drzwi urządzenia do obróbki termicznej

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DE102015226009.7A DE102015226009A1 (de) 2015-12-18 2015-12-18 Gargerät mit einer Türöffnungsvorrichtung zum automatischen Verbringen einer Tür in eine Zwischenstellung sowie Verfahren zum Öffnen einer Tür eines Gargeräts
PCT/EP2016/078105 WO2017102244A2 (de) 2015-12-18 2016-11-18 Gargerät mit einer türöffnungsvorrichtung zum automatischen verbringen einer tür in eine zwischenstellung sowie verfahren zum öffnen einer tür eines gargeräts

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EP3390917A2 EP3390917A2 (de) 2018-10-24
EP3390917B1 true EP3390917B1 (de) 2021-04-14

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US (2) US10408465B2 (pl)
EP (1) EP3390917B1 (pl)
CN (1) CN108369013B (pl)
DE (1) DE102015226009A1 (pl)
PL (1) PL3390917T3 (pl)
WO (1) WO2017102244A2 (pl)

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Also Published As

Publication number Publication date
DE102015226009A1 (de) 2017-06-22
CN108369013B (zh) 2020-09-08
US10408465B2 (en) 2019-09-10
US20180328593A1 (en) 2018-11-15
US20190271474A1 (en) 2019-09-05
WO2017102244A2 (de) 2017-06-22
EP3390917A2 (de) 2018-10-24
US10948195B2 (en) 2021-03-16
WO2017102244A3 (de) 2017-08-10
CN108369013A (zh) 2018-08-03
PL3390917T3 (pl) 2021-10-25

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