EP3956515A1 - Dispositif de fermeture et d'ouverture d'un volet, en particulier d'un volet d'appareils électroménagers, tels que des machines à traiter le linge - Google Patents

Dispositif de fermeture et d'ouverture d'un volet, en particulier d'un volet d'appareils électroménagers, tels que des machines à traiter le linge

Info

Publication number
EP3956515A1
EP3956515A1 EP20725926.8A EP20725926A EP3956515A1 EP 3956515 A1 EP3956515 A1 EP 3956515A1 EP 20725926 A EP20725926 A EP 20725926A EP 3956515 A1 EP3956515 A1 EP 3956515A1
Authority
EP
European Patent Office
Prior art keywords
closing
stop position
opening
permission
translation
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.)
Pending
Application number
EP20725926.8A
Other languages
German (de)
English (en)
Inventor
Stefano ROCCHITELLI
Vito MASI
Marco Mauceri
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.)
Elettrotecnica Rold SRL
Original Assignee
Elettrotecnica Rold SRL
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 Elettrotecnica Rold SRL filed Critical Elettrotecnica Rold SRL
Publication of EP3956515A1 publication Critical patent/EP3956515A1/fr
Pending legal-status Critical Current

Links

Classifications

    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F39/00—Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00 
    • D06F39/12—Casings; Tubs
    • D06F39/14—Doors or covers; Securing means therefor
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F37/00—Details specific to washing machines covered by groups D06F21/00 - D06F25/00
    • D06F37/02—Rotary receptacles, e.g. drums
    • D06F37/12—Rotary receptacles, e.g. drums adapted for rotation or oscillation about a vertical axis
    • D06F37/18—Doors or covers; Securing means therefor
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F37/00—Details specific to washing machines covered by groups D06F21/00 - D06F25/00
    • D06F37/26—Casings; Tubs
    • D06F37/28—Doors; Security means therefor
    • 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
    • E05Y2900/312—Application of doors, windows, wings or fittings thereof for domestic appliances for washing machines or laundry dryers
    • 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B40/00—Technologies aiming at improving the efficiency of home appliances, e.g. induction cooking or efficient technologies for refrigerators, freezers or dish washers

Definitions

  • the present invention belongs to the field of household appliances such as washing machines, dishwashers, and/or similar household appliances.
  • the present invention is advantageously applied to the field of washing machines and/or dryers with top loading.
  • the present invention relates to a closing and opening device, in particular for hatches, doors or the like, for example of household appliances of the aforesaid type.
  • the present invention relates to a device of the aforesaid type adapted to allow the performance of at least some of the functions of the household appliance only in the presence of a safe and reliable acknowledgement or electric permission of hatch closed and/or absent and/or not correctly positioned.
  • the present invention further relates to a closing system including said device and to a household appliance equipped with said system.
  • the most widespread closing and opening devices and/or systems used for household appliances such as, for example washing machines, in particular of the top loading type, and/or similar household appliances essentially comprise a true closing (and opening) assembly, usually applied to the casing of the household appliance, and a reference element usually fixed to the hatch of the household appliance itself.
  • the closing and opening assembly further comprises a closing element or latch which is switchable by translation between a first opening position and a second closing position and vice versa, wherein in the closing position, the closing element engages the reference element corresponding to the hatch, therefore ensuring the closing and locking of the hatch itself, while contrarily, with the latch in opening position, the reference element is not engaged and therefore the hatch may be opened.
  • Closing devices and/or systems are also known, including a control unit adapted to generate an electric reference in the absence of which at least some of the functions of the household appliance are inhibited or at least limited, wherein said electric reference is automatically generated as soon as the latch reaches the closing position in which it engages the reference member on the hatch.
  • Figures 10 to 13 relate to a device and/or system according to an embodiment of the present invention, a description of the functionalities of a closing device or system of known type is given below with reference to Figures 10 to 13.
  • Reference numeral 1000 in Figures 10 to 13 identifies a closing system including a closing assembly 100 (as anticipated, adapted to be applied to the casing of the household appliance) and a reference element 200 usually fixed to the hatch of the same household appliance and comprising a cavity 201.
  • the closing assembly further comprises a closing and opening element 110 (substantially a latch) which is switchable by translation (see the following description) between a first end-stop position in which it does not engage cavity 201 , and a second end-stop position in which it contrarily engages cavity 201 , wherein obviously with latch 110 engaged in cavity 201 , the opening of the hatch is prevented by the mutual contrast between latch 110 and the reference member 200.
  • Electric contacts 801 in the form of metal plates are also fixed to latch 110, wherein assembly 100 comprises electric circuitry with electric terminals 701.
  • the electric permission is also used to activate and deactivate, respectively, at least some of the functionalities of the household appliance, wherein, for example with the latch or slider in the closing position, and therefore in the presence of the corresponding electric permission, the wash cycle may be started, whilst contrarily with latch or slider 110 in the opening position, and therefore in the absence of the electric permission, the wash cycle may not be started.
  • a first drawback relates to the fact that the electric reference of“latch or slider 110 in closing position” and the corresponding electric permission are generated irrespective of the actual position of the hatch, and therefore irrespective of the engagement or not of the reference member by the latch, therefore wherein the acknowledgement of “latch or slider 110 in closing position” is not an acknowledgement of “hatch in the closing position” and much less of “reference member 200 engaged by the latch or cursor”.
  • the electric permission generated in any case activates the functionalities of the household appliance, with serious risks in the case, for example the wash cycle is activated.
  • a further drawback or dissatisfaction relates to the fact that with the hatch in closing position and the reference member 200 engaged by latch 110 (and therefore with the hatch actually locked by latch 110), following a forced opening of the hatch, for example with breaking of the reference member 200, the electric permission is not modified (since the latch does not switch from the closing position to the opening one), wherein if underway, the wash cycle therefore is not stopped, here too with serious risks due to, for example the leak of liquids.
  • the closing and opening device and/or system according to the present invention is to be characterized by manufacturing costs which are compatible with the needs of the market, contained sizes and overall volume, and also be applicable to household appliances of known type according to just as simple methods and with just as curbed costs, and also without requiring substantial variations of said household appliances.
  • the present invention is based on the general consideration that the above preset objects may be achieved and the functional and reliability needs may be dealt with in compliance with the safety legislation by means of a device which, in addition to the locking latch, also includes a permission element adapted to verify, with the latch in closing position, the actual presence of the reference member on the hatch, and therefore the actual closing position of the hatch.
  • the present invention relates to a closing and opening device for doors and/or hatches and/or similar components, in particular of household appliances such as washing machines, in particular with top loading, dishwashers and similar household appliances, said device comprising a closing and opening assembly adapted to be fixed to one of a fixed part and the hatch of a household appliance, and including a closing and opening element which is switchable by translation between a first end-stop position and a second end-stop position and vice versa; wherein said device comprises a permission element which is switchable by translation between a first own end-stop position thereof and a second own end-stop position thereof and vice versa, wherein said closing and opening element, during its translation from said first end-stop position to said second end-stop position, translationally drags said permission element from its own first end-stop position to its own second end- stop position, and wherein
  • the locking of said permission element in said own third intermediate position does not interfere with the translation of said closing element towards said second closing position, wherein, on the contrary, with said permission element locked in said own third intermediate position, said closing and opening element is translatable with respect to said permission element.
  • said device comprises elastic means interposed between said closing and opening element and said permission element, wherein the translation of said closing and opening element from said first end-stop position to said second end-stop position results in a thrust exerted by said closing and opening element on said elastic means, and in a thrust exerted on said permission element by said elastic means.
  • the unlocking of said permission element results in the automatic translation of said permission element from said own third intermediate position towards said own second end-stop position.
  • the automatic translation of said permission element from said own third intermediate position to said own second end-stop position is generated by the elastic response of said elastic means.
  • the translation of said closing and opening element towards said first end-stop position results in the translation of said permission element towards said own first end-stop position, due to a dragging action exerted by said closing and opening element.
  • the translation of said closing and opening element from said second end-stop position towards said first end-stop position results in a thrust exerted by said closing and opening element on said elastic means, and in a thrust exerted on said permission element by said elastic means.
  • the translation of said closing and opening element towards said first end-stop position occurs first with respect to said permission element and then it results in the translation of said permission element towards said first own end-stop position, due to a dragging action exerted by said closing and opening element.
  • said device comprises a control unit for controlling at least some of the functions of said household appliance, wherein said device comprises at least one electric circuit, the closing of which results in the activation, by said control unit, of at least one function of said household appliance, and wherein said at least one circuit is electrically closed only with said closing and opening element in said second end-stop position and with said permission element locked in said own third intermediate position.
  • said at least one circuit comprises a plurality of terminals
  • said device comprises a plurality of contact elements fixed to said closing element and/or said permission element, and wherein only with said closing and opening element in said second end-stop position and with said permission element locked in said own third position, said at least one electric circuit is electrically closed by mutual contact between said terminals of said at least one circuit and said contact elements.
  • the present invention also relates to a system for closing and opening doors and/or hatches and/or similar components, in particular of household appliances, such as washing machines, dishwashers and similar household appliances, said system comprising a reference member adapted to be fixed firmly to said hatch and/or a fixed part of said one household appliance, wherein said system comprises a closing and opening device according to one of the embodiments of the present invention.
  • said reference member defines a cavity, wherein said closing and opening element comprises an end portion adapted to be accommodated in said cavity.
  • said reference member defines an engagement element adapted to be engaged by said permission element during the translation thereof from said own first end-stop position to said own second end-stop position, and to lock said permission element in said own third intermediate position.
  • the present invention also relates to a household appliance, such as for example a washing machine, including at least one hatch, said household appliance comprising at least one hatch which is switchable between a first opening position and a second closing position, wherein said household appliance comprises a system according to one of the embodiments of the present invention, wherein said reference member is fixed to said hatch or to a fixed part of said household appliance, wherein said device is fixed to a fixed part of said household appliance or to said hatch of said household appliance, respectively, and wherein said reference member and device are mutually positioned so that, with said hatch in said closing position, said reference member is adapted to be engaged by said closing and opening element in said second closing position and by said permission element in said own third intermediate position.
  • a household appliance such as for example a washing machine, including at least one hatch, said household appliance comprising at least one hatch which is switchable between a first opening position and a second closing position
  • said household appliance comprises a system according to one of the embodiments of the present invention, wherein said reference member is fixed to said hatch
  • FIG. 1 to 3 show perspective views of a closing and opening device according to an embodiment of the present invention, with the closing element and the permission element in different positions, respectively;
  • FIG. 4 to 9 show side views of the device and the system according to an embodiment of the present invention, with the closing element and the permission element in different positions, respectively;
  • FIG. 10 to 13 show top and partial sectional views of the device and the system according to an embodiment of the present invention, with the closing element and the permission element in different positions, respectively;
  • Figures 14 and 15 show a side and partial sectional view and a perspective and partial sectional view, respectively, of the device according to an embodiment of the present invention
  • FIG. 16 shows an exploded perspective view of the device according to an embodiment of the present invention.
  • the present invention is particularly applied to the field of household appliances such as washing machines, dishwashers and similar household appliances, in particular washing machines with top loading, this being the reason whereby the present invention is described below with possible particular reference to the applications thereof to the field of household appliances, in particular of a washing machine.
  • Reference numeral 1000 in Figures 1 to 9 indicates a closing and opening system as a whole, comprising a closing assembly 100 adapted to be fixed to a rigid part, for example of a household appliance (not shown for reasons of clarity), and a reference member 200 adapted to be fixed to hatch 2000 of said device.
  • Said reference member further comprises a cavity 201 adapted to be engaged by the end portion of a latch 110.
  • the cross sections (with respect to the translation direction of latch 110) of cavity 201 and of the end portion of latch 110 have corresponding sizes and shapes, for example square, rectangular (as depicted) and/or similar shapes.
  • latch 110 is translatable (according to methods clarified in detail below) from a first end-stop position ( Figures 1 and 4) in which it substantially is completely accommodated in assembly 100, and a second end-stop position ( Figures 3 and 7 to 9) in which it contrarily protrudes from assembly 100. Therefore, it is shown that with hatch 2000 in closing position, and therefore with the reference member 200 positioned in front of assembly 100 (on the translation trajectory of latch 110), the switching by translation of latch 110 from the first end-stop position to the second end-stop position results in the engagement of cavity 201 by the end portion of latch or slider 110, and therefore in the locking of the hatch in the closing position.
  • Assembly 100 further comprises a second slider 300, hereinafter also identified as slider or permission element 300 for reasons which will be apparent in light of the following description, said slider 300 being translatable along a translation direction parallel to that of latch 110, between a first own end-stop position ( Figures 1 , 4 and 5) in which it is accommodated in assembly 100, and a second own end-stop position ( Figures 3, 8 and 9) in which contrarily it protrudes from assembly 100.
  • a first own end-stop position Figures 1 , 4 and 5
  • a second own end-stop position Figures 3, 8 and 9 in which contrarily it protrudes from assembly 100.
  • a peculiarity of the device according to the present invention relates to the fact that during the translation thereof between its own first end-stop position and second end-stop position, slider 300 may be stopped, stationary, in a third own intermediate position ( Figures 2 and 7) without interfering with the translation of latch 110 which contrarily, with slider 300 locked in its own third intermediate position, may be translated up to reaching the second end-stop and closing position (from right to left with respect to the drawings), and from the second end-stop and closing position to the first end-stop and opening position (from left to right with respect to the drawings).
  • the locking of slider 300 in its own third end-stop position occurs by interference with the reference member 200 according to the following methods.
  • slider 300 is dragged by latch 110, in particular (but not only) from its own first end-stop position to its second own end-stop position; whether slider 300, when dragged by latch 110 toward its own secind end-stop position, actually reaches said own second own end-stop position or rather is locked (stopped) in its own third intermediate position depends on the position of hatch 2000 and of the corresponding reference member 200.
  • assembly 100 comprises an electric motor 500, on the rotating shaft onto which a worm screw 501 is keyed.
  • latch 110 comprises a fork portion 1101 which extends from the end portion 1102 (that engaging cavity 201 according to the preceding description) to form a substantially 90° angle. Therefore, it is shown that the rotation of screw 501 in a first rotation direction results in the translation of latch 110 in a first translation direction, where the rotation of screw 501 in a second rotation direction, opposite to the first, results in the translation of latch 110 in a second translation direction, opposite to the first one.
  • the end 1103 of latch 110 opposite to the engagement end 1102 defines an engagement pin 1104 on which a first end portion of a helicoidal spring 600 is engaged.
  • Slider 300 further comprises a shaped portion 302 which extends from the end (engagement) portion 301 and defines an engagement pin 304 on which the second end portion of the helicoidal spring 600 is engaged. Both latch 110 and slider 300 are supported by a support 400 and are guided in translation by guides defined by said support 400 and not described in detail for synthesis purposes.
  • latch 110 may be translated up to reaching the second end-stop position ( Figures 8, 9 12), and thereby that slider 300 is also dragged up to reaching its own second end-stop position.
  • FIGS 10 to 16 further show that assembly 100 comprises a board 700 from which emerge the terminals of electric circuits which are adapted to generate just as many electric references or permissions on the basis of which or in the absence of which, respectively, a control unit (not shown and adapted to be connected to the different component parts of the household appliance) enables or inhibits, respectively, at least some of the functionalities of said household appliance.
  • latch 110 and slider 300 each carry electric contacts 801 and 802, respectively, which are translationally dragged by latch 110 and slider 300, respectively, and repositioned with respect to the terminals 701 according to the positions taken on by latch 110 and slider 300.
  • each of the sliding electric contacts 801 (carried by latch 110) and 802 (carried by slider 300) closes the corresponding circuit and the electric reference is such as to again inhibit said at least some of the functionalities of the household appliance, in particular such as to prevent the start of the wash cycle;
  • the sliding contact 801 closes the corresponding electric circuit, while the electric circuit served by the sliding contact 802 remains open, and the electric reference (here, the electric permission) is such as to enable at least some of the functionalities of the household appliance, in particular such as to allow the start of the wash cycle.
  • a closing and opening device is provided by the present invention, which:
  • the device according to the present invention is adapted to be used in combination, or also to be equipped with, a further presence sensor of hatch 2000 and/or of the corresponding reference member 200.
  • device 1000 according to the present invention could be equipped with a feeler sensor of the reed switch type or also of the optical type, it also capable of detecting the presence or absence of hatch 2000 and/or of the reference member 200.
  • a reed switch sensor may be provided, including a magnetic element to be fixed to hatch 2000 and/or to the reference member 200, and a reader consisting of flexible strips connected to further contacts of the circuitry described above; with the hatch and the reference member 200 in closing position and with the reference member 200 being intact and not damaged, the reader perceives the presence of the magnetic element which causes the flexible strips to approach and closes the corresponding circuit, thus generating a further electric permission.
  • the functionalities of the household appliance, the wash cycle in particular, may be started only in the case of a first electric permission as per item c), and a further electric permission generated by the reed switch. And therefore, the start of the wash cycle is however subordinate to the further electric permission generated by the reed switch even in the highly unlikely case of electric permission as per item c) generated in an improper manner (with the hatch open and/or the reference member 200 absent or damaged).

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Washing And Drying Of Tableware (AREA)
  • Push-Button Switches (AREA)

Abstract

L'invention concerne un dispositif (1000) permettant de fermer et d'ouvrir des volets et/ou des trappes et/ou des éléments similaires, en particulier d'appareils électroménagers tels que des lave-linge, en particulier avec chargement par le dessus, des lave-vaisselles et des appareils électroménagers similaires, ledit dispositif comprenant un ensemble (100) de fermeture et d'ouverture conçu pour être fixé à une partie fixe ou la trappe d'un appareil électroménager, et comprenant un élément (110) de fermeture et d'ouverture qui peut être basculé par translation entre une première position d'arrêt d'extrémité et une seconde position d'arrêt d'extrémité et vice versa.
EP20725926.8A 2019-04-19 2020-04-17 Dispositif de fermeture et d'ouverture d'un volet, en particulier d'un volet d'appareils électroménagers, tels que des machines à traiter le linge Pending EP3956515A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT201900006178 2019-04-19
PCT/IB2020/053658 WO2020212930A1 (fr) 2019-04-19 2020-04-17 Dispositif de fermeture et d'ouverture d'un volet, en particulier d'un volet d'appareils électroménagers, tels que des machines à traiter le linge

Publications (1)

Publication Number Publication Date
EP3956515A1 true EP3956515A1 (fr) 2022-02-23

Family

ID=67384274

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20725926.8A Pending EP3956515A1 (fr) 2019-04-19 2020-04-17 Dispositif de fermeture et d'ouverture d'un volet, en particulier d'un volet d'appareils électroménagers, tels que des machines à traiter le linge

Country Status (3)

Country Link
EP (1) EP3956515A1 (fr)
KR (1) KR20220002377A (fr)
WO (1) WO2020212930A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3808888B1 (fr) * 2019-10-15 2023-11-22 Bitron S.p.A. Dispositif de verrouillage de porte amélioré
IT202000025843A1 (it) * 2020-10-30 2022-04-30 Elettrotecnica Rold Srl Dispositivo per la chiusura e apertura e/o il blocco e lo sblocco di sportelli, in particolare di sportelli di elettrodomestici quali lavabiancheria o simili
IT202000026906A1 (it) * 2020-11-11 2022-05-11 Bitron Spa Sistema blocco-porta modulare.
DE102021210865A1 (de) 2021-09-28 2023-03-30 BSH Hausgeräte GmbH Haushalts-Geschirrspülmaschine

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2809454T3 (es) * 2015-11-25 2021-03-04 Montajes Electronicos Dorcas S L Sistema de desbloqueo eléctrico
IT201600127447A1 (it) * 2016-12-16 2018-06-16 Bitron Spa Elettrodomestico con dispositivo di sicurezza per prevenire l’uscita di panni e relativo dispositivo di sicurezza.
IT201600130683A1 (it) * 2016-12-23 2018-06-23 Illinois Tool Works Blocco-porta con un cursore di rilevamento gancio con sicurezza addizionale

Also Published As

Publication number Publication date
KR20220002377A (ko) 2022-01-06
WO2020212930A1 (fr) 2020-10-22

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