EP2995237B1 - Haushaltsgerät - Google Patents

Haushaltsgerät Download PDF

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Publication number
EP2995237B1
EP2995237B1 EP15183142.7A EP15183142A EP2995237B1 EP 2995237 B1 EP2995237 B1 EP 2995237B1 EP 15183142 A EP15183142 A EP 15183142A EP 2995237 B1 EP2995237 B1 EP 2995237B1
Authority
EP
European Patent Office
Prior art keywords
door
actuator
working
domestic appliance
working element
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
EP15183142.7A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2995237A1 (de
Inventor
Markus Höpfl
Jochen Müller
Matthias Nübel
Steffen Westerhausen
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 PL15183142T priority Critical patent/PL2995237T3/pl
Publication of EP2995237A1 publication Critical patent/EP2995237A1/de
Application granted granted Critical
Publication of EP2995237B1 publication Critical patent/EP2995237B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L15/00—Washing or rinsing machines for crockery or tableware
    • A47L15/42—Details
    • A47L15/4251—Details of the casing
    • A47L15/4257—Details of the loading door
    • A47L15/4259—Arrangements of locking or security/safety devices for doors, e.g. door latches, switch to stop operation when door is open

Definitions

  • the present invention relates to a domestic appliance, in particular a dishwasher, with an automatic door opening function.
  • automatic door opening may be initiated at the end of a wash program to allow steam to escape from inside the dishwasher.
  • the DE 10 2012 211 254 A1 describes this purpose an actuator that extends a working element that presses against the locking hook of the door lock. As a result, the door lock is unlocked and the door takes a partial opening position due to its own weight.
  • thermoactuator is an actuator in which there is a movement in response to a change in temperature.
  • the movement includes, for example, the movement of a work item.
  • thermo-actuator is used for example in the DE 10 2012 203 484 A1 used in a household appliance to open or unlock the door.
  • the heating of a thermoactuator takes place actively by Joule heat, while cooling by passive cooling by cooling. Accordingly, a thermal actuator can expand virtually instantaneously, but contract only gradually.
  • the return movement of the working element to its starting position can take several seconds to a few minutes.
  • thermo-actuator when operating an automatic door opener operated by means of a thermo-actuator, the working element remains temporarily extended and impedes closing of the door. However, if, for example, a child safety lock the door, threatens at the point where the working element transmits its force to the door, ie on an inner surface of the door or on the door lock, a mechanical overload.
  • an object of the present invention is to provide an improved household appliance, which in particular has a more easily implemented automatic door opening function.
  • a domestic appliance in particular a dishwasher, proposed with a door and an actuator, which has a working element which is adapted to be adjusted in a working direction between a retracted and an extended position for opening or unlocking the door, wherein the Actuator for a deflection of the working element from the working direction in its extended position in a closing or locking the door or for a deflection of the working element from the working direction at an adjustment of the same from its retracted in its extended position with the door closed or locked transversely to the working direction a pivot axis is pivotable.
  • thermoactuator For automatic opening and unlocking of the door, a cost-effective thermoactuator is preferably used.
  • the actuator can be pivoted between a working position, in which the working element is aligned along the working direction, and a deflecting position, in which the working element is pivoted out of the working direction.
  • a simple pivoting mechanism ensures that the thermal actuator and its working element, when the working element encounters an excessive mechanical resistance during extension or in its extended position, can escape the resistance and be pivoted.
  • the said pivot mechanism allows a manual closing of the door even during an automatic opening operation or when an extended working element.
  • Manual the automatic opening process or the extended working element counteracting operations are thus possible, which increases the user acceptance, avoids mechanical overloads and possibly occurring Damage to the household appliance prevented.
  • the door remains in the closed position after a manual closing.
  • Actuators or actuators convert electrical signals into physical quantities. For example, these may be forces that cause mechanical movements.
  • Working elements are used for power transmission machine elements. Swivel axes limit the freedom of movement of the elements to be pivoted on a solder plane of the pivot axis.
  • opening / closing means a movement of the door to release (open) or close (close) access to a room behind the door.
  • Unlocking / locking the door means an operation of a locking element which releases an opening of the door (unlocking - also referred to as unlocking here) or such an opening locks (locking).
  • the opening and unlocking can also take place simultaneously, just as the closing and locking can take place simultaneously. This is the case, for example, with a door lock in which the unlocking of the door with an opening thereof and / or the locking of the door associated with a closing thereof.
  • the body of the household appliance is its supporting housing, which provides in the case of a dishwasher the space for receiving a washing container.
  • the actuator is pivoted directly or indirectly on a body of the household appliance about the pivot axis.
  • Direct is understood to mean the direct articulation of the actuator without interposed element on the body.
  • the "indirect” linkage comprises the interposition of at least one element between the actuator and the body.
  • the pivotable linkage results primarily in a simple and maintenance-free swivel mechanism.
  • the actuator has a holder, which is articulated pivotably about the pivot axis.
  • the bracket can provide the actuator with protection against contamination, mechanical impact and injury. Above all, it also serves to absorb forces acting on the actuator. Depending on the starting point and direction of the forces acting on these are transferred to the body of the household appliance and / or translated into moments that can lead to the pivoting of the actuator and its holder from its working position in the evasive position.
  • the holder can be designed to be open and be constructed, for example, of a plurality of webs. Alternatively, a closed housing can serve as a holder.
  • the holder has a guide for the working element which is adapted to transmit forces acting transversely on the working element to the holder.
  • the provided in the holder of the actuator guide for the working element in particular ensures that the forces released by the actuator are transmitted via the working element along the direction defined by the pivot axis and guide. Forces acting on the working element transversely to this direction are transmitted to the holder of the actuator, in particular with the aid of the guide, and act as a torque with respect to the pivot axis as a result of the articulation, as a result of which the holder moves with its actuator about the pivot axis.
  • the linkage is realized as part of the holder.
  • a stop is adapted to determine the working direction of the working element.
  • the stopper is in particular so attached to the body of the household appliance, that he the freedom of movement of the holder of the actuator - and thus that of the actuator - in limited a first direction of rotation of the actuator.
  • the position at which the stop is mounted on the body of the household appliance, together with the pivot axis defines the working direction of the working element - and thus of the actuator - in a solder plane of the pivot axis.
  • the stop may be a separate component, or possibly also be provided by a projection on the body of the household appliance.
  • the actuator is to pivot between a working position, in which the working element is aligned along the working direction, and a deflecting position, in which the working element is pivoted out of the working direction.
  • a return spring is adapted to pivot the actuator back into the working position.
  • the return spring is preferably mounted on the body of the household appliance that it restricts the freedom of movement of the holder of the actuator in a second direction of rotation of the actuator.
  • the position at which the return spring is mounted on the body of the household appliance, together with the pivot axis defines the maximum deflection of the working element - and thus of the actuator - in a solder plane with respect to the pivot axis. How strong the pivoting of the actuator fails in the alternate position at a given, acting transversely to the direction of force determines the spring stiffness of the return spring.
  • the working element is adapted to act for opening or unlocking the door against a first contour.
  • any force released by the actuator is transmitted to the first contour via the working element.
  • the door is indirectly, i. via a door lock, or directly yields the force transmitted by the working element, the working element preferably remains on the first contour and causes an opening or unlocking the door.
  • the first contour is formed as a straight or concave surface transversely to the working direction.
  • the working element is perpendicular to it when touching the first contour in order to effect a frictional connection.
  • the angle between the working element and the first contour is preferably between 45 ° and 90 °, more preferably between 65 ° and 90 °, and most preferably between 85 ° and 90 °. This intermediate angle defines, for a given force in the working direction (longitudinal force), which portion of it is deflected perpendicular to the working direction (transverse force).
  • the first contour and the working element can also be embodied in a form-fitting manner.
  • a positive fit would arise, for example, if a convex, i. rounded shape of the coming into contact with the first contour end of the working element meets a correspondingly concave shape of the first contour.
  • the cancellation of the positive engagement and pivoting of the actuator may then require a slight elastic deformation of the first contour.
  • the return spring already when the actuator is in its working position, exert a defined restoring force on the actuator and prevent premature pivoting of the actuator.
  • these two mechanisms can also be used together.
  • an obliquely shaped to the working direction, second contour is provided, which adjoins the first contour and is adapted to act on the working element for pivoting the actuator with a force across the working direction.
  • the power transmission from the working element takes place at the boundary between the first and second contour. If the door of the household appliance does not yield the force transmitted by the working element, for example because it is locked for child safety, the working element can break laterally over the slope of the second contour in the escape position due to the lateral force and thus causes the door remains closed and despite extended working element to no mechanical damage. If the door is opened by the working element, but closed again by the user while the working element is still extended, then the working element also preferably breaks laterally over the second contour into the evading position because of the transverse force In this case, the door remains closed and there is no mechanical damage due to overload.
  • an obliquely shaped to the working direction contour is provided, which is adapted to be actuated by the working element for the opening or unlocking of the door, and further applied to the working element for pivoting the actuator with a force transverse to the working direction.
  • the one contour are both functions, namely opening or unlocking the door and pivoting of the actuator when the force across the working direction exceeds a predetermined threshold assigned.
  • the first and / or second contour is formed on a slide, which is adapted to actuate a striker of a door lock of the door.
  • the first and / or second contour can be realized in a slide, which accomplishes a power transmission between the working element and the door lock and allows actuation of the door lock from the inside of the household appliance.
  • a power transmission from the working element to a first contour formed in a slide preferably causes unlocking of the door, and optionally a subsequent opening of the same.
  • the slider and the striker can be formed in one piece or as separate components.
  • the first and / or second contour is formed on an inner panel of the door.
  • the first and / or second contour can already be taken into account in the design of the inner panel of the door, which reduces the number of components to be purchased and assembled.
  • an angle between the working direction of the working element and the surface of the inner panel can be formed by suitable positioning and alignment of the actuator. From the point of view of the working element, this one arises Intermediate angle as a slope in the working direction, which optionally exerts a transverse force on the working element and causes the pivoting of the actuator in the evasive position.
  • the slope can be provided by the fact that the working direction of the actuator is slightly obliquely directed to a flat inner panel of the door.
  • a power transmission from the working element to a formed as an inner plate of the door first contour preferably causes opening of the door.
  • the working element is designed as a ram.
  • a working element that can be designed in the form of a plunger or piston.
  • the working element is rounded at its door-side end or formed with a roller.
  • a convex rounding of the working element, or an equipment of the working element with a roller in particular reduces the frictional connection between the working element on the one hand and the first and / or second contour on the other hand, which reduces the transverse force required for pivoting the actuator from its working direction.
  • the actuator is designed as a thermoactuator, in particular as a wax engine.
  • Thermo-actuators usually comprise a wax (for example, oil, wax, hard paraffin or metal), which undergoes a phase change by a change in temperature and thus a significant change in volume, which can be implemented in a proportional change in length.
  • a wax for example, oil, wax, hard paraffin or metal
  • thermoactuators are wax motors, bimetals or shape memory alloys (memory metals).
  • Thermoactuators, in particular the mentioned wax engines, are characterized by the fact that they are particularly cost-effective.
  • the striker of the door lock which by means of the actuator from a locking position in which it engages positively in the door, against an acting in the closing direction of the door spring in an unlocked position adjustable, in which it releases the door for opening the same and secures positively against return by a spring, and has a lever which reverses the positive locking when closing the door, whereby the spring actuates the striker in the locked position and the door in the Closing direction pulls.
  • the door of the household appliance preferably has on its upper side a recess which is provided for a positive engagement of the striker or closing hook of the door lock.
  • the striker or locking hook is lifted out of the recess. This is done in particular by manually opening the door or by the fact that the automatic door opener pushes the striker or locking hook in the direction of the front of the device via the slide.
  • the striker or locking hook is pressed against a spring and secured against resetting. Subsequently, the door can be opened. To close the door, this return protection is released by a hook provided for this, and the spring pushes the striker or locking hook back into its locking position.
  • Fig. 1 shows a schematic side view of a household appliance 1 with a closed door 2, which hinged at its lower end to a body 3 of the household appliance 1 pivotally and thereby between a vertical closed position and a in Fig. 1 indicated horizontal opening position is pivotable.
  • the household appliance 1 further comprises an actuator 4 and a door lock 5, which together realize an automatic door opening function. While the door lock 5 is directly above the door 2 in is arranged in its closed position in a ceiling region of the body 3, the actuator 4 is provided adjacent to the door lock 5.
  • the household appliance 1 is in particular a dishwasher, in principle, however, it is conceivable for each household appliance 1 with a pivotably hinged door 2 that it is unlocked by automatic door opening function and / or opened. Examples of such household appliances are washing machines, ovens, steamer and the like.
  • FIG. 2A and Fig. 2B represent the relevant plan view and side view.
  • the actuator 4 which is designed as a thermal actuator, in particular as a wax engine.
  • the actuator 4 is surrounded by a holder 6, which is hinged to a body 3 of the household appliance 1 pivotable about a pivot axis S, which is why the holder 6 - and thus the actuator 4 - only in a solder plane of the pivot axis S is movable.
  • the pivoting of the actuator 4 in this solder plane is further limited by a stop 7 and a return spring 8, which are also mounted on the body 3 of the household appliance 1.
  • the stop 7 sets together with the pivot axis S a working direction A of the actuator 4 fixed (working position), and prevents beyond this working direction A beyond pivoting of the actuator 4.
  • the working position is in Fig. 2A in a solid line and in Fig. 3A shown in dotted line.
  • the stop 7 may be a separate component, or optionally also formed by a projection on the body 3 of the household appliance.
  • Such a transverse force is due to the fact that the holder 6 has a guide 9 for the working element 10, the forces acting transversely on the working element 10 forces on the holder 6 of the actuator 4 transmits. A force exerted laterally on the working element 10 can thus lead to pivoting of the actuator 4 from its working direction A into its escape position.
  • the working element 10 may be designed as a plunger or piston and for easier pivoting at the end facing the door 2 or the door lock 5, rounded or formed with a roller 11. In Fig. 2A the variant with the rounded end of the working element 10 is shown.
  • a longitudinal force exerted by the actuator 4 on the working element 10 leads to an adjustment of the working element 10 between a retracted and an extended position. If the working element 10 in the working direction A on the door 2 (see. Fig. 3A, 3B . 4A and 4B below) or on the door lock 5 (see. FIGS. 2A and 2B ), its extension causes an opening or unlocking of the door 2.
  • a first contour 12 is provided, which lies in the working direction A of the working element 10 and is formed as a straight or concave surface transversely to the working direction A.
  • the working element 10 is perpendicular to the first contour 12, while a concave surface provides additional positive engagement with the working element 10.
  • Fig. 2A the variant of the first contour 12 is shown with the straight surface.
  • adjoining the straight surface of the first contour 12 is a concave surface 12a, which is pulled out against the working direction A from the plane of the first contour 12.
  • the concave surface 12a, together with the stop 7, ensures that pivoting of the actuator 4 always takes place in the evasion position provided for this purpose.
  • the side of the first contour 12 is followed by a second contour 13 formed at an angle to the working direction A. It provides the working element 10, which starts at the boundary between the first contour 12 and the second contour 13, a slope, which converts a portion of the longitudinal force in a transverse force.
  • This can, as shown above, pivot the actuator 4 from its working direction A, provided that it exceeds the spring force of the return spring 8.
  • the actuator 4 is thus pivoted out of its working direction A as soon as the force exerted on it and transmitted through it longitudinal force is too large. This limit depends on the design of the working element 10, the first contour 12, the optional second contour 13 and the spring stiffness of the return spring 8.
  • FIGS. 2A and 2B is the first and second contour 12, 13 formed on a slider 14 which actuates a striker 15 of the door lock 5 of the door 2.
  • the side view in Fig. 2B shows that the striker 15 of the door lock 5 is in retracted actuator 4 in a locking position in which it engages positively in the door 2 and in the indicated recess.
  • the door 2 is in its closed position.
  • a spring 16, which serves to reset an optionally unlocked striker 15, is therefore relaxed.
  • FIGS. 2A and 2B shown embodiment with an actuator 4, which is adapted to operate the door lock 5 is in the FIGS. 3A and 3B shown with the actuator 4 extended.
  • the working element 10 is exemplified with a roller 11, also the first contour 12 is shown in a concave configuration.
  • Fig. 3A shows the top view Fig. 2A with the actuator 4 and the locked door 2.
  • the actuator 4 When the working element 10 strikes a non-openable, in particular secured by a child safety door 2, the transmitted longitudinal force soon exceeds a limit, which leads to a transverse force, the actuator 4 to the Swivel axis S can pivot around out of its working direction A. This panning is in Fig. 3A shown. Since the door 2 can not escape the longitudinal force transmitted by the working element 10, the actuator 4 breaks out of its working direction A via the first and / or second contour 12, 13. In this way, overloads avoided if the automatic door opening function hits a door that can not be opened.
  • Fig. 3A shows in this case the state at the end of the closing process.
  • the actuator 4 is pivoted in the same manner about the pivot axis S around out of its working direction A, thus avoiding overload.
  • Fig. 3B shows in solid line the side view Fig. 2B with the actuator 4 extended and the door 2 unlocked and opened.
  • the door lock 5 can be set up in such a way that the unlocking and opening on the one hand and the closing and locking on the other hand occur simultaneously.
  • the striker 15 of the door lock 5 is accordingly adjusted from the locking position (dotted line) in an unlocked position (solid line), pressed against a force acting in the closing direction of the door 2 spring 16, and positively secured against return by the spring 16, whereby he Door 2 releases for opening same as Fig. 3A shows.
  • the striker 15 has a lever 17, which when unlocking the door 2 extends so that it must be operated mandatory when closing the door 2 manually.
  • the lever 17 lifts the positive connection of the striker 15 with a locking this in the unlocked position locking 19 (see Fig. 3B ), whereupon the spring 16 actuates the striker 15 in the locking position and pulls the door 2 in the closing direction.
  • FIGS. 4A and 4B show schematic detail views from above of an embodiment of the household appliance 1, in which an extended actuator 10 does not act on a door lock 5 but directly on the door 2.
  • Fig. 4A will be the case of a non-openable, in particular Door 2 secured by a child safety lock, while Fig. 4B an unlocked door 2 is based.
  • first and / or second contour 12, 13 formed on an inner panel 18 of the door 2 to be able to act directly on the door 2 for the purpose of automatic door opening.
  • Figs. 5A and 5B show schematic detail views from above of a further embodiment of the household appliance 1, in which an extended actuator 10 acts directly on the door 2.
  • the first and second contour 12, 13 are made Fig. 2A an inner plate 18 of the door 2 is formed.
  • This design also fulfills the purpose of being able to act directly on the door 2 for automatic door opening.
  • Fig. 5A the case of a non-openable door 2 is treated, wherein the working position is shown in dotted line and the evasive position of the actuator 4 in a solid line.
  • Fig. 5B shows how the door 2 is opened, wherein in its dashed line the closed position and in a solid line, the open position is shown. In both cases, however, this is true FIGS. 4A and 4B Said.

Landscapes

  • Closing And Opening Devices For Wings, And Checks For Wings (AREA)
  • Washing And Drying Of Tableware (AREA)
EP15183142.7A 2014-09-11 2015-08-31 Haushaltsgerät Active EP2995237B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL15183142T PL2995237T3 (pl) 2014-09-11 2015-08-31 Urządzenie gospodarstwa domowego

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102014218238.7A DE102014218238B3 (de) 2014-09-11 2014-09-11 Haushaltsgerät

Publications (2)

Publication Number Publication Date
EP2995237A1 EP2995237A1 (de) 2016-03-16
EP2995237B1 true EP2995237B1 (de) 2017-05-31

Family

ID=54014640

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15183142.7A Active EP2995237B1 (de) 2014-09-11 2015-08-31 Haushaltsgerät

Country Status (3)

Country Link
EP (1) EP2995237B1 (pl)
DE (1) DE102014218238B3 (pl)
PL (1) PL2995237T3 (pl)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113323509B (zh) * 2020-02-28 2023-02-17 宁波方太厨具有限公司 一种门锁结构及应用有该门锁结构的清洗机
US11536070B2 (en) 2020-06-04 2022-12-27 Whirlpool Corporation Dish treating appliance with a door opener
DE102021104747A1 (de) 2021-02-26 2022-09-01 Emz-Hanauer Gmbh & Co. Kgaa Haushaltsgerät mit Verschluss- und Öffnungsfunktion für eine Tür des Haushaltsgeräts

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011141542A1 (en) * 2010-05-14 2011-11-17 Arcelik Anonim Sirketi A dishwasher comprising an automatic door opening mechanism
DE102012203484A1 (de) * 2012-03-06 2013-09-12 BSH Bosch und Siemens Hausgeräte GmbH Haushaltsgerät
DE102012211254A1 (de) * 2012-06-29 2014-01-02 BSH Bosch und Siemens Hausgeräte GmbH Haushaltsgerät mit einer Verriegelungsanordnung und einem Türgewichtsausgleichssystem

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

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Publication number Publication date
EP2995237A1 (de) 2016-03-16
DE102014218238B3 (de) 2015-10-15
PL2995237T3 (pl) 2017-10-31

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