EP1498796A1 - Dispositif d'actionnement et/ou de verrouillage pour des appareils domestiques pourvus d'un système de commande amélioré - Google Patents

Dispositif d'actionnement et/ou de verrouillage pour des appareils domestiques pourvus d'un système de commande amélioré Download PDF

Info

Publication number: EP1498796A1
Authority: EP; European Patent Office
Prior art keywords: actuation; locking device; module; previous; household appliance
Prior art date: 2003-07-17
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.): Granted

Application number

EP04016491A

Other languages

German (de)

English (en)

Other versions

EP1498796B1 (fr

Inventor

Marco Moro

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.)

Eltek SpA

Original Assignee

Eltek SpA

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.)

2003-07-17

Filing date

2004-07-13

Publication date

2005-01-19

2004-07-13 Application filed by Eltek SpA filed Critical Eltek SpA

2005-01-19 Publication of EP1498796A1 publication Critical patent/EP1498796A1/fr

2008-03-26 Application granted granted Critical

2008-03-26 Publication of EP1498796B1 publication Critical patent/EP1498796B1/fr

2024-07-13 Anticipated expiration legal-status Critical

Status Expired - Lifetime legal-status Critical Current

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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
- D06F37/00—Details specific to washing machines covered by groups D06F21/00 - D06F25/00
- D06F37/42—Safety arrangements, e.g. for stopping rotation of the receptacle upon opening of the casing door
- 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
- 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
- D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
- D06F2103/40—Opening or locking status of doors
- 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
- D06F2105/00—Systems or parameters controlled or affected by the control systems of washing machines, washer-dryers or laundry dryers
- D06F2105/44—Opening, closing or locking of doors
- 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
- D06F34/00—Details of control systems for washing machines, washer-dryers or laundry dryers
- D06F34/14—Arrangements for detecting or measuring specific parameters
- D06F34/20—Parameters relating to constructional components, e.g. door sensors

Definitions

the present invention relates to an actuation and/or locking device for household appliances of a type as described in the preamble of the first claim, having a particular and improved system for controlling the actuation to be performed and the overall operation of the device, as well as to a method for assembling said actuation and/or locking device.
a device of such a type is for example known from the Italian Patent for Industrial Invention No. 1.314.176 in the name of the present Applicant, hereafter referred to as "first known solution" for simplicity sake, the equivalent foreign patent applications being the European Patent application. EP 1 041 186 and the USA application 09/479,289. In view of a close examination of the latters, the texts of the cited applications are provided as an integral part of the present description.
a further example of known actuation means is provided by "direct action" actuators which, unlike the first and the second known solutions, do not have a real kinematic system associated with the actuation means. Therefore, such actuators incorporate at most connection elements whose movements necessarily follow those of the actuators. They can thus be seen merely as actuators having an improved constitution compared to simple monostable type actuators, e.g. thermo-actuators.
the known actuation devices of this latter type offer the possibility of integrating, on the outside of the actuator body, optical sensors suitable for detecting the position of the above-mentioned connection elements, whose actuation stroke is closely related to that of the actuators commanding the overall operation of the devices.
critical referred to the assembly and operation mode of an actuation and/or locking device, means:
the known solutions have the undoubted disadvantage of an irrational assembly as regards the technical problem of advantageously applying a number of substantially known sensors (such as magnetic sensors, optical sensors, or other types of sensors), and of connecting the actuator associated with the device in an efficient manner. It follows that the known solutions imply evident complications in the assembly of the devices and in the connection of the related wiring to the electronic control unit or, more in general, to the control system of the household appliance, suitable for managing the various functions that the actuation and/or locking devices must implement.
substantially known sensors such as magnetic sensors, optical sensors, or other types of sensors
actuation and/or locking devices having a system for controlling the actuation to be performed and the overall operation which cannot be easily protected from the action of particularly aggressive atmospheric agents, such as, for instance, the high level of humidity present within household appliances, like washing machines.
particularly aggressive atmospheric agents such as, for instance, the high level of humidity present within household appliances, like washing machines.
microswitches cannot be resinated or at least partially coated with protective materials, and are therefore easily attacked by oxidizing agents, with predictable consequences.
the present invention is based on the acknowledgment of the above facts and permits to overcome the highlighted drawbacks of the state of the art.
the present invention mainly has the purpose of indicating an actuation and/or locking device for household appliances which is reliable, economical and easy to be assembled, and that therefore does not require any particularly careful manual intervention by an operator appointed to the assembly of household appliances.
a first aim of the invention is therefore to provide an actuation and/or locking device for household appliances having a particular and improved system for controlling the actuation to be performed and the overall operation; it is capable not only of detecting the actual and proper operation of the elements of the kinematic system associated with it, but also of performing its functions in a non-critical mode of assembly and operation, i.e. of implementing them with the maximum manufacturing efficiency and the minimum cost.
a further aim of the invention is that of indicating an actuation and/or locking device for household appliances which requires an assembly process easily feasible by using automatic production systems.
the device according to the invention is capable of controlling the state and the position of an internal or associated kinematic system/mechanism (and therefore not only the simple operation of the actuator or of the actuation elements closely associated with it), at the same time producing a much higher efficiency in terms of assembly, operation and reliability.
a further aim of the invention is that of indicating an actuation and/or locking device for household appliances which implies an assembly of the actuation device at low risk of rejection during a quality and reliability check carried out on the entire actuator.
a rejection may be caused either by a defective operation of the means for the detection of the position of the kinematic system elements of said device, or by a wrong harness concerning the detection and actuation means.
a further aim of the invention is that of indicating an actuation and/or locking device for household appliances which allows to easily carry out testing procedures by means of automatic production systems.
a further aim of the invention is that of indicating an actuation and/or locking device for household appliances having a system for controlling the actuation to be performed and the overall operation which can be easily provided in a version with protected assembly, i.e. susceptible of efficiently operating in environments with particularly hard climatic conditions and/or a shock-proof location.
a further aim of the invention is then to provide an actuation and/or locking device with external dimensions as small as possible, for applications on household appliances having particular needs in terms of compactness and therefore of rationalization of the inner spaces.
a further aim of the invention is that of indicating an actuation and/or locking device for household appliances comprising a module providing at least part of the harness/connection of at least part of the sensor and/or the actuator.
an actuation and/or locking device for household appliances having an improved system for controlling the actuation to be performed and the overall operation, as well as by a method for controlling the actuation to be performed, having the features of the annexed claims, which form an integral part of the present description.
the device according to the invention is of a typology as described in the preamble of the first claim, which is considered as an integral part of the present description, i.e. of a type comprising at least an actuator and a kinematic system and/or actuation means; the actuation kinematic system allows the actuator to transfer at least a part of the motion it generates to the final actuation and/or locking elements.
the invention fits any devices comprising a kinematic system suitable for producing an actuation and/or locking of parts of household appliances, and wherein it should be appropriate, for any reason, to monitor the proper functionality of said kinematic system.
Devices according to the present invention may also comprise some actuation kinematic systems suitable for assuming operating states which are independent from the operating state of the actuator that drives them.
Said devices may therefore comprise the feature of having a plurality of stability positions and/or an autonomous operation and/or an improved working speed, and/or of implementing other specific functions; furthermore, they may comprise complex kinematic systems, or more simply they may command the articulated actuation of shafts, strikers, cams, foils, hooks, and the like.
autonomous operation devices we mean a category of devices suitable for carrying out all phases of their working cycle, i.e. all of the sequences of actuation and/or hooking/unhooking, independently from the fact of being mounted on household appliance or final apparatus and/or without necessarily having to co-operate with external means, such as kinematic systems or actuation elements belonging to the final apparatus; an extremely accurate assembly of said devices on the machine or final apparatus is therefore not strictly necessary.
kinematic system means a set of elements or means which are susceptible of transmitting the action, e.g. a thrust, pull or rotation, etc. produced by an associated actuator and/or of transforming said action into a different motion.
the kinematic system is at least partially independent from the operation of the actuator, i.e. some parts of said kinematic system may not be integral with the actuator and therefore may not be subject to a motion constantly constrained to that of the actuator.
Fig. 12 of the first known solution shows the initial condition, or idle condition, of the device 20, comprising said characteristics of autonomous operation, wherein the actuator 1 is not electrically supplied and the slide 23 is in an advanced or extracted position with respect to the housing body, i.e. in the lock position in the given embodiment of use as a drum lock, wherein the appendix 23A is inserted in a suitable cavity or seat defined in the pulley 28.
the start of a wash cycle causes the electric supply of the thermo-actuator 7, with the consequent extension of the shaft 3.
the thrust produced by the shaft 3 causes the displacement of the slide 23 and of the lateral appendix 23G, thereby freeing the driving element 22A of the microswitch 22.
the teeth 23E engage with the pins 21F, thereby locking the slide 23 in the retracted position of use, or unlock position; in such a condition, the appendix 23A of the slide 23 is in a retracted position within the body 21, and so it is behind the cavity of the pulley 28, thereby freeing it and allowing its rotation.
the switching of the microswitch 22 is also used for closing the door lock supply circuit, thereby preventing the washing machine door from being opened.
the microswitch 22 is kept in the door lock supply circuit closed position, thereby preventing the machine door from being opened.
the shaft 3 is however free to continue its return stroke within the body 2 of the actuator 1; during said stroke, the return of the shaft 3 causes the retraction of the slider 26 (Fig. 15), and the lateral appendixes 26A slide onto the inclined reliefs 23F of the foils 23D; the result is therefore a reciprocal opening of the foils 23D until the slide 23 is released and returns toward its original position (Figs. 16, 17).
the device 1 thus returns to the initial position (Fig. 12), i.e. the lock position.
the switching of the microswitch 22 takes place, since the lateral appendix 23G presses again the actuation element 22A.
the switching of the microswitch 22 causes the opening of the supply circuit of the electric motor that produces the drum revolution; it follows that the washing machine drum is locked in the desired position, the motor is stopped and the machine door can be opened.
the above described device of the first known solution uses a microswitch 22 which co-operates with a lateral appendix 23G constrained to the slide 23 in order to send an ON/OFF type signal to a logic of the control system of the machine on which the device is mounted, aiming at signaling whether or not the slide 23 is in the working extracted position, i.e. the lock position.
the microswitch 22 is of mechanic type, and is suitable, as described above, for detecting the position of an element of the kinematic system for the actuation of the autonomous operation device.
a first requirement that such actuation devices, in particular drum locks and/or door locks for applications in household appliances, must meet is that of having external dimensions as small as possible, so that they can be housed even in particularly compact machines. From this viewpoint, we can preliminarily point out that the use of a microswitch, which is bulky by its very constitution, placed next to the kinematic system as in the first known solution, often takes much more room than the maximum width of the main body of such actuation devices will allow. Therefore, in the known drum locking devices, said contacts or microswitches are very difficult to be installed within the confined inner spaces available in the current household appliances.
Actuation devices of the above-mentioned type are also used as door locks for ovens, especially for household applications. Also for such devices related to the second known solution we can make some considerations concerning practical disadvantages.
FIGS 4 and 9-11 related to the aforesaid document EP 781 920 illustrate an embodiment of an actuation device comprising a position sensor, indicated as a whole with 20, suitable for providing an electric signal as a function of the operating position of the appendix 7.
the sensor 20 is of an optical type and the related position signal is of digital binary type.
the first movable element 28 of the sensor 20 is integral with the appendix 7, whereas the second movable element 30 is integral with the support element 9, to which the second thermo-actuator 5 (Fig. 4) is rigidly constrained. Therefore, the sensor 20 is only capable of detecting the proper operation of the elements within the body 2 of the actuation device, but without being able to detect anything regarding an external kinematic system that may operate in association with the whole actuation device 1.
the first embodiment of the actuation device according to the present invention is illustrated in the annexed Figs. 1-10, and concerns an actuation and/or locking device having an inner kinematic system analogous to that represented in the first known solution, whose text is to be considered as an integral part of the present description, particularly as regards the constitution and the operation of the homologous parts.
Figs. 1-6 clearly highlight the parts making up the entire actuation and/or locking device, indicated as a whole with 50. It consists of a main body 51 substantially shaped as an open-top cradle, for instance made of a thermoplastic material, and having at its four ends many flanges 52 for fastening the same device 50 to a machine incorporating the same device 50 by means of known fastener means.
a seat 53 is provided, protruding or raised with respect to the same body 51, for housing and/or fastening a module 54, comprising sensor and transducer means which will be better detailed later, suitable for detecting at least some operating conditions of the device 50 and for transferring the corresponding signals to a control system, not shown here for simplicity sake, of the actuation and/or locking device 50.
Said module 54 is suitable for providing at least a part of the related harness and/or electric connection among the parts of the same device 50 and to the above-mentioned control system; moreover, it is preferably a single module, such as, for instance, a printed circuit, and comprises at least one electronic device; on this matter, reference to Figs. 1, 6 and 7 is particularly made.
the module 54 comprises an electronic circuit 54A, mounted on a printed circuit, wherein at least on one side or an end there are electric connections forming a male connector element 54AI, suitable for being inserted into and/or connected to a respective external female connector 55.
the female connector 55 may for example be in connection with the control system of a machine incorporating the actuation device 50 according to the invention, and therefore said connection allows for the above-mentioned electric connection between the module 54 and the control system.
the module 54 is also electrically connected to a second connector 56, suitable for providing an electric connection to at least one actuator 1 of the device 50; aimed to this, the connector 56 is engaged onto the electric contacts of a thermo-actuator 1 housed in the actuation and/or locking device 50, in order to transmit the electric supply to a thermistor or PCT within the same thermo-actuator 1.
the electronic circuit 54A comprises a pair of optical sensors made up of one light emitter 54B and one light receiver 54C, represented by a LED diode and a phototransistor, respectively, mutually coupled, i.e. facing each other; if necessary, electronic components may be additionally present on the electronic circuit 54A, such as, for instance, resistances and capacitors, if necessary obtained with the SMD (surface mounted device) technique.
said module 54 allows to obtain electric signals, e.g. of binary type, depending on whether the receiver 54C receives or not a light signal produced by the emitter 54B.
the module 54 including the electronic circuit 54A, is mounted onto the seat 53 of the main body 51 through suitable known fastening and/or hooking elements, e.g. of the typology specified below.
the male connector 54AI turns out to be easily accessible from the side of the body 51; at the top it is then covered by a part of the body, i.e. by a shell 54D (Fig.1), which preferably performs multiple functions; in fact, said shell 54D has the functions of covering and protecting the electronic circuit 54A as well as of driving the connection of the electronic circuit 54A onto the male element 54AI, i.e. it is suitable for determining univocally the polarization of the connector 55 during the connection to the electronic circuit 54A.
the shell 54D has references 54E in the engagement area of the female connector 55, which in its turn has mating strikers 55E suitable for guiding its engagement into the male connector 54I. This way, it is univocally determined that only a particular female connector 55 is able to be connected to the sensor 54, with only one possible connection orientation.
hooking means suitable for retaining the connector 55 in the operating position; such hooking means, e.g. consisting of an elastic element, may be provided also within the shell 54D.
thermo-actuator 1 is of a type analogous to that illustrated in the first known solution, and its operation is the same. Therefore these aspects are not to be detailed any further, since they are known and widely described in the cited patent text.
the number 57 indicates a movable element or slide within the body 51, which at one end has a driving or locking element 57A, hereafter referred to simply as shaft 57A, protruding from an aperture 57G defined in one of the lengthwise ends of the body 51; the shaft 57A is suitable for representing the actuation and/or locking element for the actuated device 50.
a driving or locking element 57A hereafter referred to simply as shaft 57A, protruding from an aperture 57G defined in one of the lengthwise ends of the body 51; the shaft 57A is suitable for representing the actuation and/or locking element for the actuated device 50.
the slide 57 once assembled to the body 51 along with a cover 58, creates a volume inside the device 50, wherein the thermo-actuator 1 is housed.
the cover 58 is movable with respect to the body 51, and is a part of the kinematic system: it is of a typology as illustrated in Figs. 10 and 11 of the first known solution, i.e. it is suitable for engaging through its slider 58C with the final portion of the actuation element 3 of the thermo-actuator 1.
the cover 58 is then moved by the actuation element 3 in both translation directions, in accordance with the activation state of the thermo-actuator 1.
An elastic element 59 in particular a spiral spring, is rested between the slide 57 and the body 51, in front of the latter in the representations of Figs. 1 to 10.
the body 51 houses the thermo-actuator 1 resting on the relief 51C, which is susceptible of commanding in a known manner the actuation of the kinematic system of the actuation device 50, i.e. whether the related piston or actuation element 3 should extend or not depending on the supply or the interruption of the electric power to the inner PCT thermoresistor.
the housing modes of the thermo-actuator 1 are also known, since they are identical to those illustrated and described in the embodiment showing the first known solution.
thermo-actuator 1 has a substantially fixed position with respect to the body 51, thanks to the presence of a clamp 60 that retains it from the top; said clamp may be a suitably shaped metal band, which hooks onto catches that are not detailed any further here for simplicity sake.
the slide 57 is configured so as to have an empty central area, whose dimensions are greater than those of the thermo-actuator 1 housed within, resting on the main body 51.
the slide 57 is suitably shaped and/or provided with a side aperture fitted for allowing it to move notwithstanding the crossing and/or presence of some elements of the actuator 1, whose contacts always remain facing toward the outside part of the slide 57.
a first end of the slide 57, in the rear in Figs. 1-10, defines the already cited shaft 57A which, as said above, passes through an aperture 57G being present in one of the lengthwise ends of the main body 51 of the actuation device 50.
the foils 57D depart from the bridge 57B, laterally with respect to the constraint element 57C, thereby providing hooking means for the slide 57.
These foils 57D are flexible and have ends shaped for defining respective hooking teeth 57E, each having an inclined surface which ends with a step.
reliefs 57F are also defined, whose function will be described later; as it can be seen, each of the reliefs 57F has at least a lateral surface which is inclined or anyway shaped for allowing an easy sliding onto it of a surface of a further functional component of the actuation device 1, specifically the slider 58C of the cover 58.
the slider 58C has appendixes 58I provided for, when the kinematic system is activated, sliding onto the reliefs 57F and setting apart the foils 57D.
the main body 51 also has hooking pins 51B integrated into the bottom wall and projecting into the body 51, located near the foils 57D at a distance that allows them to interact with the latter.
the pins 51B are substantially positioned in correspondence with the cited inclined surface of the hooking teeth 57E.
the surface of the pins 51B facing the foils 57D is suitable for easing the sliding of the inclined surface of the teeth 57E, when these have to overcome the constraint being represented by the pins 51B.
the teeth 57E of the slide 57 are also suitable for hooking onto the pins 51B of the body 51.
an indicator 61 protrudes from the slide 57, preferably having a relief-like or bridge-like shape and integral or in one piece with the same slide 57.
said indicator 61 is susceptible of interacting with the module 54 associated with the main body 51.
it is capable of sliding between the emitter 54B and the receiver 54C of the same module 54, thus interfering with the emitted light signal.
Such a solution embodiment therefore permits to signal the position of the slide 57 with respect to the main body 51 of the actuation device 50.
the slider 58C is bound to the cover 58, and is mechanically coupled in a known way with the actuation element or piston 3 of the thermo-actuator 1 (on this matter, see the description of the first known solution).
the slider 58C therefore is not constrained to the main body 51, being able to slide longitudinally with respect to it, and can longitudinally return with respect to the slide 57.
the same slider 58C also defines two appendixes 58I, which are substantially aligned with the inclined reliefs of the foils 57D; said appendixes 58I have the function of operating onto the inclined reliefs of the foils 57D in order to cause a bending during the opening action and therefore cause the hooking teeth 57E to be released from the pins 51B integral with the body 51 of the device 50.
the actuation and/or locking device 50 is suitable for being applied to a household appliance, for instance a laundry washing and/or drying machine provided with a safety drum locking function. Its operation is described below with particular reference to Figs. 7-10.
the above-mentioned figures show the actuation device 50 in plan view and without some exterior components, in order to facilitate the understanding of its operation; specifically, it is represented without the upper part of the cover 58 of the body 51, but with the slider 58C integral with the cover 58, and without the shell 54D of the module 54.
the cited figures also provide a schematic representation of a pulley 28 integral with the drum revolution shaft of a laundry washing machine; the other components of this machine are not shown and described hereafter for simplicity, since such components and their operation are known in the art.
Fig. 7 shows an operating condition of the actuation device 50, which can be considered as initial.
the actuation device 50 is in the lock position, i.e. with the shaft 57A of the slide 57 at its maximum lengthwise stroke, inserted in a cavity defined in the pulley 28 for preventing the drum from turning.
the spiral spring 59 is at its maximum extension, constrained between the constraint point 51A of the main body 51 and the constraint element 57C of the slide 57; the thermoactuator 1 is not electrically supplied, and therefore the related actuation element 3 is in retracted position.
the hooking teeth 57E of the foils 57D are distant from the hooking pins 51B; the slider 58C of the cover 58, where the actuation element 3 of the thermoactuator 1 is constrained, is in fully retracted position.
the indicator 61 integral with the slide 57 interrupts the optical transmission between the emitter 54B and the receiver 54C.
the module 54 transmits an electric signal to the machine control system, e.g. of ON type, thereby detecting the presence of the slide 57 and therefore of the related shaft 57A in the drum lock operating condition of the same machine, i.e. of maximum lengthwise extension.
the subsequent operating phase starts by supplying power to the thermoactuator 1, which displaces the actuation element or piston 3 in a known way, bringing it to an extracted position of use, e.g. within a time of a few tenths of seconds.
Fig. 8 highlights said second operating condition, according to which the actuation element 3 pushes the bridge 57B of the slide 57, against the opposed action of the spring 59. Therefore, the slide 57 translates to a retracted position of use together with its shaft 57A, thereby freeing the cavity of the pulley 28.
the actuation device 50 is now in an actuation or unlock condition, and the drum of the laundry washing machine in which it is mounted is free to rotate.
the above-mentioned retraction of the slide 57 is readily signaled by the module 54, which sends corresponding information to the control logic of the laundry washing machine.
the indicator 61 integral with the slide 57 is also in a retracted operating position, and therefore is far from the space defined between the emitter 54B and the receiver 54C of the module 54. The transmission of the optical signal between these items 54B and 54C is thus allowed, and this time the digital signal output from the module 54 is of OFF type.
the signal switching between ON and OFF, or any other suitable typology of signal (e.g. analogue, encoded, etc.), sent by the module 54 to the control system of the laundry washing machine may then suitably be used for implementing additional functions of a machine in which the actuation device 50 is installed, e.g. in order to close the supply circuit of a door lock associated with the actuation device 50, i.e. with the drum lock, thereby preventing the door of the laundry washing machine from being opened.
a door lock associated with the actuation device 50 i.e. with the drum lock
Fig. 8 also shows what happens on the other end of the slide 57, i.e. on the bridge 57B.
the teeth 57E of the foils 57D are now hooked on the hooking pins 51B of the main body 51.
the actuation element 3 of the thermoactuator 1 produces a displacement of the slide 57 allowing the teeth 57E of the foils 57D to bend and open slightly in contact with the pins 51B.
the opening takes place due to the shape of the inclined surface of the teeth 57E, which is capable of sliding onto the specially shaped surface of the pins 51B.
the elastic reaction of the foils 57D will realign them, with the foils 57D being hooked onto the pins 51B.
thermo-actuator 1 The operating condition of Fig. 8, during which the thermo-actuator 1 is electrically supplied, lasts as long as the locking device is not to be engaged, in particular for locking the drum of a laundry washing machine.
the subsequent operating condition is implemented by the machine control system through the interruption of the electric supply to the thermoactuator 1, e.g. at the end of an entire wash program carried out by a laundry washing machine.
thermoactuator 1 cools down and the actuation element 3 slowly goes back, returning to an initial or retracted operating position, being assisted by the action of the spring 59.
This progressive retraction is shown clearly in Figs. 9 and 10, and ends with the actuation device 50 in the initial operating condition, i.e. in the lock position shown in Fig. 7.
the slider 58C is free to translate with respect to the main body 51 of the actuation device 50 and, in the hooked configuration of the teeth 57E, also with respect to the slide 57.
thermoactuator 1 is prevented from translating within the main body 51 by the presence of the relief 51C.
Fig.10 shows the moment when, at a certain bending or opening value of the foils 57D, the hooking teeth 57E free themselves from the pins 51B due to the disengagement of the respective surfaces, previously facing and touching each other.
the slide 57 is released from the pins 51B, and the spring 59 pushes said slide 57 toward the initial or lock position of the actuation device 50.
the shaft 57A of the slide 57 therefore presses onto the pulley 28, with the spring 59 loaded.
the initial operating condition of Fig. 7 is achieved when the shaft 57A is free to reach its maximum extension; in this specific embodiment, when it enters the cavity of the pulley 28.
the slide 57 After the return of the slide 57 to an initial position, another switching of the signal sent by the module 54 to the control system is obtained, this time from OFF to ON.
the indicator 61 returns to occupy the space between the emitter 54B and the receiver 54C, and therefore the transmission of the optical signal is physically interrupted. Said switching can be used by the machine control system to implement various machine functions in a known manner.
the components of the kinematic system of the actuation device 50 and in particular the slide 57, the foils 57D and the respective teeth 57E and reliefs 57F, the pins 51B and the slider 58C with the respective appendixes 58I, are appropriately sized so that the teeth 57E unhook from the pins 51B when the actuation element 3 of the thermo-actuator 1 has almost fully returned to the retracted position of use.
the stroke of the slider 58C is longer than the working stroke of the foils 57D.
the device 50 has a module 54 which preferably consists in a single electronic operation module, i.e. the electronic circuit 54A, where a part of the connectors supplying power to the thermoactuator 1 as well as the transducer/sensor means 54B, 54C and the circuits for detecting the position of the indicator 61 of the slide 57, may be integrated.
the cited electric connection means 54A, 55, 56 may be realized either according to specific requirements or in a known manner. In particular, at least two electric connections, for instance made up of different tracks of electrically conductive material and defined in the electronic circuit 54A, respectively lead to:
the module 54 of the position of the slide 57 has an electronic circuit 54A wherein a plurality of distinct electric connections are defined in a known and therefore not further detailed manner, which implement the above-mentioned connections 1) and 2) and allow for an easy connection, for instance by pressure, of the electronic circuit 54A onto the male element 54AI of the electronic circuit 54A.
the electronic circuit 54A is in its turn electrically connected to the machine control system which, among other functions, also manages the actuation and/or locking of the actuation device 50.
the module 54 may also contain other electronic components necessary for the operation of the actuation device, such as, for instance, additional position sensors and/or electronic circuits needed for their operation which, being known, are not detailed here.
the operation of the transducer 54B-54C, integrated into the electronic circuit 54A, can be easily tested in a known manner before being assembled into the main body 51, since it is contained in the described integrated electronic module 54: testing can therefore be performed through electronic diagnostic methods, and such operation can be carried out easily, in a known and therefore not detailed manner, within automatic production systems.
a variation of the actuation device 50 provides a module 54 of a type which may be defined as "protected assembly".
Said assembly implies the execution of a resin finishing process or, more in general, of a partial or total coating and/or protection and/or waterproofing process on the electronic circuit 54A and/or the module 54, by using a suitable resin or thermoplastic material.
Said process may be carried out in a known manner through a material applied by spraying, casting, immersion, molding or injection, or else obtained through any suitable method, which in particular must be performed by using automatic methods and/or along a production line.
the above variation advantageously permits to install the actuation device 50 in household appliances operating in particularly heavy conditions, e.g. in the presence of a high level of humidity, which in the long term would cause the oxidation of the connectors. It follows a higher reliability in time of the actuation control system and therefore of the overall operation of the actuation device 50.
the first system of forces/displacements is identified by the situation illustrated and described in Figs. 7 and 10, whereas the second system of forces/displacements is substantially represented in Figs. 8 and 9.
the forces acting on the kinematic system essentially consist in that exerted by the actuation element 3 of the thermoactuator 1, which is equal and opposite to the elastic force exerted by the spiral spring 59;
the second system of forces/displacements presents, in addition to the first, the constraint reaction that the hooking pins 51 exert onto the hooking teeth 57E of the foils 57D of the slide 57.
these two different systems of forces/displacements make the actuation device 50 become of a type with two different stability positions, i.e. bistable, and having improved working speed.
the kinematic system of the actuation device 50 (i.e. of the actuation and/or locking device according to the invention) is suitable for transferring the motion from the first actuation means, i.e. the thermoactuator 1, to the second actuation and/or locking means, i.e. the shaft 57A of the slide 57, so as to convert the motion produced by the first actuation means into a second motion different from the first one.
the size of the indicator 61 can be well greater than the light it must obscure when the sensor is ON, so that any production tolerances can be easily controlled and made non-influential.
the described actuation and/or locking device 50 provides, as illustrated, a system for controlling the internal kinematic system of the device and for commanding the thermo-actuator 1 with a "non-critical" mode of assembly and operation.
the adopted solution i.e. the use of the optical module 54, solves the above-mentioned criticality in a brilliant and original way.
the actuation and/or locking device for household appliances has an actuation control system which is reliable, economical and easy to assemble.
the device 50 has a single module 54 having a single electronic circuit 54A integrating the transducer/sensor means 54B and 54C, the conductive tracks and the second connector 56 supplying power to the thermo-actuator 1, as well as the conductive tracks suitable for connecting electrically to the external connector 55, finally transmitting the signal concerning the position of the indicator 61 of the slide 57 to the control system of the actuation and/or locking device 50.
the electric wiring is extremely easy to be implemented, by connecting the external connector 55 with a slight pressure onto the male connector element 54AI of the electronic circuit 54A; the same process is required for the connection of the second connector 56 to the contacts of the thermoactuator 1.
the electronic circuit 54A integrating the transducer/sensor 54B and 54C, the operation of which can be easily tested before its assembly onto the main body 51, is at low risk of being rejected during a quality check carried out on the entire actuation device. Moreover, testing can be easily performed by using automatic production systems, to great advantage for the quality of the final product.
the actuation control system may also be easily provided in a version with protected assembly, as previously described, so as to operate efficiently in particular heavy conditions thanks to the perfect operation of the electric contacts.
the optical-type module 54 once assembled, protrudes just a little bit from the overall shape of the main body 51 (which is substantially defined by the rectangle comprising the flanges 52 of the body 51).
the optical-type module 54 also offers the advantage of an extremely low weight, thus contributing to the reduction of the overall weight of the entire device 50.
the inventive idea at the basis of the present invention consists in proposing an actuation device having a system for controlling the actuation and/or locking and the overall operation, which is neither assembly-critical nor operation-critical. Said feature is obtained through the use of a sensor having a single module, in particular an electronic one, integrating the functions for the connection to the actuation means of the device as well as the means for detecting/transducing the position of an element of the kinematic system associated with said actuation means.
the above invention revolutionizes the approach to the manufacture and production of actuation and/or locking devices for household appliances, teaching to apply the sensors for detecting the position of an element of the kinematic system (and therefore of the actual operating state of the device itself) within a single module, in particular an electronic one, integrated with connections to the actuator. In this way, the assembly, production and final use of the entire device are made highly reliable and efficient.
the described control system uses an optical transducer/sensor; it could however also be achieved with other known systems having a non-critical mode of assembly and operation, i.e. being integrated into a module, in particular an electronic one, together with the connectors of the actuation means.
the receiver element of an inductive or Hall-effect magnetic sensor could be integrated into a similar electronic module as a technical equivalent of the optical sensors.
the magnetic sensor would therefore need the insertion of a ferromagnetic material in a certain position of the slide 57, in particular laterally, in the area corresponding to and as a substitute for the indicator 61. In such a amnner, the presence of the slide in a certain position would equally be detected through the development of an induced current in the magnetic sensor.
a locking device to be applied onto the door of a household appliance, e.g. an oven door lock, indicated as a whole with DB.
a peculiarity of this detection device DR consists in having a first SO1 and a second SO2 pair of optical sensors plugged into a printed circuit CS supporting them, sensors thereof being made up of an emitter element and a receiver element facing each other, such as, for instance, a LED photodiode and a phototransistor mutually coupled; the pairs of optical sensors SO1 and SO2 are preferably aligned according to a common lengthwise direction.
the detection device DR is assembled in the actuation device DB with the printed circuit CS resting on the staked support FR6 of the body FR and the sensor pairs SO1 and SO2 toward the inside of the body FR.
the first sensor pair SO1 is capable of interacting with a first appendix C1A of the first slider C1
the second pair SO2 can interact with a second appendix C2A of the second slider C2.
This configuration is clearly visible in Fig. 13 and in Figs. 15 to 20.
the printed circuit CS as well as the entire detection device DR, is of the same type as the 54A one related to the sensor 54 of the first representative solution embodiment shown in Figs. 1-10; the arrangement of the electric connections is also the same.
the detection device DR has:
the printed circuit CS is crossed by the electric signals indicating the position of the sliders C1 and C2, as well as by the supply signals for the thermo-actuator TA. Therefore, the detection device DR integrates into an electronically working single module the printed circuit CS, the functions for detecting the position of the sliders C1 and C2, and those for the connection to the thermoactuator TA.
the body FR has a cover CO on top, movable with respect to the body FR, which covers the whole housing for the kinematic system C, the second slider C2 and the hooking element B, leaving free only the thermoactuator TA, which thus can be easily replaced by accessing the locking device DB from above.
the cover CO has the peculiarity of being provided with teeth or references CO1 in the area corresponding to the housing of the detection device DR, which is at least partially covered, thereby guiding the pressure connection of the plug SP to the respective connector CS1.
Said references CO1 are suitable for determining the direction of insertion of the connector or plug SP during its connection to the respective connector CS1, thus preventing connection mistakes.
Figs. 15 and 16-20 show the locking device DB in a plan view without the cover CO; in particular, Figs. 16-20 show the detection device DR without the printed circuit CS in order to highlight the sensor pairs SO1 and SO2.
the pivoting element EB co-operates in a known manner (see the description of the second known solution) in association with the inner walls of the body FR adjacent to the same element BE and with a specially shaped relief C1R sideways from the first slider C; the element EB also co-operates with a fourth spring M4, binding itself to the first slider C1.
This particular conformation of the pivoting element EB substantially having four fulcrum points represented by the three cited protrusions and the head, indicated with the symbols EB1-EB4, gives the same element its particular pivoting motion; said particular motion is induced by the respective positions taken from time to time, combined by the pull exerted by the fourth spring M4 on a point near the head EB4, the action being generated when the first slider C1 advancing under the thrust action of the pushing element TA1 of the thermoactuator TA.
Figs. 16 and 16/I show the locking device DB in idle or not active configuration, i.e. with the hooking element B1 in retracted unlock position and deactivated thermoactuator TA.
the second slider C2 is in extracted position, the latter meaning that the element to be locked of the household appliance, an oven door (PF in Fig. 28) in this embodiment, is not closed, i.e. does not interfere with the ledge C2B of the second slider C2.
This condition does not imply any interruption of the transmission of the optical signal between emitter and receiver of the optical sensor pairs SO1 and SO2; the appendixes C1A and C2A do not interpose themselves between emitter and receiver of said sensors.
Such a condition is therefore recognized by the regulating device DR and signaled to the control system of the household appliance.
the subsequent closing of the oven door (PF in Figs. 21 and 22), shown in Figs. 17 and 17/I, causes the retraction of the ledge C2B integral with the second slider C2; the second appendix C2A interrupts the optical transmission between emitter and receiver of the second sensor pair SO2, which switches its state, e.g. to the ON position, and sends the corresponding signal to the control system.
the next phase implemented by the control system is locking, i.e. the actuation of the locking device DB, as shown in Figs. 18 and 18/I.
the control system supplies the thermoactuator TA, so that its pushing element TA1 makes the first slider C1 move forward, which in its turn acts upon the hooking element B as previously described.
the hooking element B rotates about the fulcrum FR4, so that the hook B1 is extracted in a lock position.
the rotation of the hooking element B is caused by the thrust exerted in co-operation by the inclined plane of the second end C1II of the first slider C1 and by the second profile or cam B2 of the element B itself.
the first slider C1 moves in the same direction, thereby causing the relief C1R to slide onto the lateral surface; the pivoting element EB therefore slides onto the relief C1R of the first slider C1 until overcoming it and bringing its own head EB4 in engagement with the relief C1R, under the action of the fourth spring M4; the second appendix EB2 remains engaged in the provided seat within the body FR.
the first appendix C1A also gets to interfere with the first sensor pair SO1, thereby interrupting the optical signal between emitter and receiver and switching the state of the signal sent to the control system, e.g. to ON; at this stage, therefore, both sensor pairs SO1 and SO2 send an ON signal to the control system.
the pivoting element EB therefore performs an swinging or angular movement about a fulcrum point located in the area corresponding to the inclined surface of the relief C1R of the first slider C1; the fourth spring M4 takes a position which is substantially parallel to the sliding axis of the first slider C1.
the above configuration does not allow the first slider C1 to go back under the thrust of the third spring M3, and therefore the locking device DB remains in the lock position, as clearly shown in Fig. 19, even in the absence of electric supply to the thermoactuator TA.
the advancing of the first slider C1 causes the pivoting element EB to be released from the relief C1R; due to the unstable condition determined by the pull of the fourth spring M4, the head EB4 moves away from the condition of hooking with the relief C1R, with the first appendix EB1 moving toward the body FR.
the operating situation where the pivoting element EB is released from the relief C1R is shown in Figs. 20, 20/I.
the first slider C1 tends to go back under the action of the third spring M3, until it causes the third appendix EB3 to come out from the seat EB3 of the second retainer FE2.
the retraction of the pushing element TA1 therefore causes the first slider C1 to follow the same element TA1, since the pivoting element EB is fully adhering to the inner surface of the body FR.
This condition allows the hooking element B to rotate about the fulcrum FR4 again under the action of the first spring M1, thus reaching a release operating condition.
This restores the configuration wherein the first sensor pair SO1 sends an OFF signal to the control system, whereas the second sensor pair SO2 sends an ON signal (Fig. 17, 17/I).
the subsequent opening of the oven door causes the second slider C2 to advance under the thrust of the second spring M2, and the second sensor pair SO2 switches the signal to OFF.
the locking device DB is then again in the configuration of Figs. 16, 16/I.
the locking device DB may assume in its operating conditions, with particular reference to the ON/OFF signals that the detection device DR sends to the control system through its integrated electronic module, i.e. the printed circuit CS, and the electric connection provided by the fast-coupling connector SP.
Fig. 21 shows a perspective view from above of the locking device DB assembled to a household appliance F, in particular an oven, working as a door lock for a door PF, e.g. an angularly movable or pivoting door.
Fig. 22 shows an enlarged lengthwise section of a detail of the oven F, i.e. the upper area, according to a plane parallel to the lateral surface of the oven F and very close to said surface.
the device DB is positioned with the second end FR5 of the body FR, i.e. the end where the hooking element B is located, close to the upper surface of the oven F in the area corresponding to the oven door PF.
end FR5 has hooking seats IN, clearly visible in Figs. 11 and 13, which rest or hook onto the lower edge SS1 of an open-box structure SS representing the exterior enclosure of said upper area of the oven F.
the first flanged end FR1 of the body FR i.e. the one corresponding to the area where the thermoactuator TA is housed, protrudes inside said upper area of the oven F, where the device DB is fastened.
the locking device DB is in the lock operating position, as can be noticed from the extracted position of the hooking element B, whose hook B1 is engaged in a seat SP of the door PF in order to prevent it from opening.
the wiring can advantageously be provided automatically during the assembly of the household appliance in which the locking device has to operate; it follows a rationalization, a higher speed and a better overall efficiency of the production processes for household appliances using the locking device according to the present invention.
the hooking element and the kinematic system could be provided in a known manner through a single element, consisting in a number of linked parts susceptible of performing the functions previously described.
the sensor means could be actuated by an element integral with the hooking and/or locking means, i.e. with the second actuation and/or locking means, instead of being integral with the kinematic system.
this solution implies a higher versatility in the realization of the design architecture of the entire actuation and/or locking device, offering the additional possibility of locating the integrated single module in proximity of the second actuation and/or locking means.

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Engineering & Computer Science (AREA)
Textile Engineering (AREA)
Main Body Construction Of Washing Machines And Laundry Dryers (AREA)
Lock And Its Accessories (AREA)
Selective Calling Equipment (AREA)
Executing Machine-Instructions (AREA)

EP04016491A 2003-07-17 2004-07-13 Dispositif d'actionnement et/ou de verrouillage pour des appareils domestiques pourvus d'un système de commande amélioré Expired - Lifetime EP1498796B1 (fr)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
IT000554A ITTO20030554A1 (it)	2003-07-17	2003-07-17	Dispositivo di attuazione e/o bloccaggio per apparecchi elettrodomestici avente un migliorato sistema di controllo dell'attuazione.
ITTO20030554		2003-07-18

Publications (2)

Publication Number	Publication Date
EP1498796A1 true EP1498796A1 (fr)	2005-01-19
EP1498796B1 EP1498796B1 (fr)	2008-03-26

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ID=33463069

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Application Number	Title	Priority Date	Filing Date
EP04016491A Expired - Lifetime EP1498796B1 (fr)	2003-07-17	2004-07-13	Dispositif d'actionnement et/ou de verrouillage pour des appareils domestiques pourvus d'un système de commande amélioré

Country Status (4)

Country	Link
EP (1)	EP1498796B1 (fr)
AT (1)	ATE390659T1 (fr)
DE (1)	DE602004012668T2 (fr)
IT (1)	ITTO20030554A1 (fr)

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KR100849564B1 (ko)	2006-12-20	2008-07-31	엘지전자 주식회사	오븐의 잠금장치 및 수동 오븐잠금 해제장치
WO2009007290A1 (fr)	2007-07-09	2009-01-15	BSH Bosch und Siemens Hausgeräte GmbH	Appareil domestique doté d'un dispositif de détection de la position d'une fermeture de porte à auto-diagnostic
WO2009007802A1 (fr) *	2007-07-10	2009-01-15	Indesit Company S.P.A.	Dispositif et procédé de verrouillage et de déverrouillage de la porte d'un appareil ménager
EP2397626A1 (fr) *	2010-06-18	2011-12-21	Eltek S.P.A.	Dispositif de verrouillage de porte avec un thermo-actionneur pour appareils ménagers
CN103228835A (zh) *	2010-10-05	2013-07-31	比特龙有限公司	用于家用器具的门锁定装置
EP2052122A4 (fr) *	2007-04-25	2014-10-08	Dual Mechanics Co Ltd	Dispositif de verrouillage de porte pour appareil électroménager
EP3225147A1 (fr) *	2016-03-28	2017-10-04	Lg Electronics Inc.	Verrou et électroménager en étant doté
WO2018236684A1 (fr) *	2017-06-19	2018-12-27	Illinois Tool Works Inc.	Serrure de porte
CN109138620A (zh) *	2017-06-19	2019-01-04	伊利诺斯工具制品有限公司	门锁

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KR100849564B1 (ko)	2006-12-20	2008-07-31	엘지전자 주식회사	오븐의 잠금장치 및 수동 오븐잠금 해제장치
EP2052122A4 (fr) *	2007-04-25	2014-10-08	Dual Mechanics Co Ltd	Dispositif de verrouillage de porte pour appareil électroménager
WO2009007290A1 (fr)	2007-07-09	2009-01-15	BSH Bosch und Siemens Hausgeräte GmbH	Appareil domestique doté d'un dispositif de détection de la position d'une fermeture de porte à auto-diagnostic
RU2453262C2 (ru) *	2007-07-09	2012-06-20	Бсх Бош Унд Сименс Хаусгерете Гмбх	Бытовой прибор, оборудованный устройством диагностики положения запорного элемента двери
US8440028B2 (en)	2007-07-09	2013-05-14	Bsh Bosch Und Siemens Hausgeraete Gmbh	Domestic appliance with a self-diagnosing door lock position detection device
CN101686792B (zh) *	2007-07-09	2013-05-15	Bsh博世和西门子家用器具有限公司	具有自诊断式门锁位置探测装置的家用器具
WO2009007802A1 (fr) *	2007-07-10	2009-01-15	Indesit Company S.P.A.	Dispositif et procédé de verrouillage et de déverrouillage de la porte d'un appareil ménager
EP2397626A1 (fr) *	2010-06-18	2011-12-21	Eltek S.P.A.	Dispositif de verrouillage de porte avec un thermo-actionneur pour appareils ménagers
CN103228835A (zh) *	2010-10-05	2013-07-31	比特龙有限公司	用于家用器具的门锁定装置
CN103228835B (zh) *	2010-10-05	2016-10-12	比特龙有限公司	用于家用器具的门锁定装置
EP3225147A1 (fr) *	2016-03-28	2017-10-04	Lg Electronics Inc.	Verrou et électroménager en étant doté
CN107237561A (zh) *	2016-03-28	2017-10-10	Lg电子株式会社	锁和具有该锁的家用电器
US10321798B2 (en)	2016-03-28	2019-06-18	Lg Electronics Inc.	Lock and home appliance having the same
EP3501370A1 (fr) *	2016-03-28	2019-06-26	LG Electronics Inc.	Verrou et appareil électroménager le comprenant
CN107237561B (zh) *	2016-03-28	2019-07-16	Lg电子株式会社	锁和具有该锁的家用电器
US10531782B2 (en)	2016-03-28	2020-01-14	Lg Electronics Inc.	Lock and home appliance having the same
US11419477B2 (en)	2016-03-28	2022-08-23	Lg Electronics Inc.	Lock and home appliance having the same
WO2018236684A1 (fr) *	2017-06-19	2018-12-27	Illinois Tool Works Inc.	Serrure de porte
CN109138620A (zh) *	2017-06-19	2019-01-04	伊利诺斯工具制品有限公司	门锁
CN109138620B (zh) *	2017-06-19	2022-01-07	伊利诺斯工具制品有限公司	门锁
US11898369B2 (en)	2017-06-19	2024-02-13	Illinois Tool Works Inc.	Door lock

Also Published As

Publication number	Publication date
ATE390659T1 (de)	2008-04-15
ITTO20030554A1 (it)	2005-01-18
DE602004012668T2 (de)	2009-04-09
DE602004012668D1 (de)	2008-05-08
EP1498796B1 (fr)	2008-03-26

Publication	Publication Date	Title
EP1498796B1 (fr)	2008-03-26	Dispositif d'actionnement et/ou de verrouillage pour des appareils domestiques pourvus d'un système de commande amélioré
EP2450510B1 (fr)	2020-09-16	Dispositif de verrouillage de porte pour un appareil ménager et mécanisme bistable
CN104662219B (zh)	2017-04-05	具有门存在感测的设备闩锁
EP1396052B1 (fr)	2006-03-15	Connecteur electrique
CA2463830C (fr)	2010-06-29	Serrure modulaire de portiere de vehicule a moteur et portiere dotee de cette serrure
US20100140963A1 (en)	2010-06-10	Motor vehicle door lock
KR101606725B1 (ko)	2016-03-28	세탁기의 리드 로커
CN115316906A (zh)	2022-11-11	一种洗碗机、开门机构及其控制方法
KR20250076490A (ko)	2025-05-29	식기세척기의 도어 개폐 매커니즘
JP3918766B2 (ja)	2007-05-23	媒体自動交換機
KR101855470B1 (ko)	2018-07-05	하트캠 방식의 세탁기 도어 잠금장치
KR102754239B1 (ko)	2025-01-14	가전 제품의 도어를 잠그기 위한 도어 잠금 장치
CN115263097B (zh)	2023-11-21	一种用于家用电器的门锁执行机构
CN113969719B (zh)	2025-01-24	一种具有自动开关门功能的执行机构
EP4339353B1 (fr)	2025-07-02	Module d'ouverture automatique pour une porte d'un appareil ménager
KR102364088B1 (ko)	2022-02-17	가전기기
CN105986710B (zh)	2020-03-17	门锁装置
CN110318612B (zh)	2024-09-10	车门锁及具有其的车辆
KR102429320B1 (ko)	2022-08-04	가전제품 도어락 장치
JP2016205028A (ja)	2016-12-08	レバー組付構造及びレバー組付方法
SI21888A (sl)	2006-04-30	Varnostna zapora vrat gospodinjskih aparatov
IT202000026906A1 (it)	2022-05-11	Sistema blocco-porta modulare.
KR102775232B1 (ko)	2025-03-04	식기세척기 및 그 제어방법
CN218304847U (zh)	2023-01-17	一种洗碗机及其开门机构
CN119923502A (zh)	2025-05-02	用于家用电器的门的自动打开模块

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