EP1433893A2 - Dispositif de verrouillage d'une porte, particulièrement pour des appareils électroménagers - Google Patents

Dispositif de verrouillage d'une porte, particulièrement pour des appareils électroménagers Download PDF

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Publication number
EP1433893A2
EP1433893A2 EP03029559A EP03029559A EP1433893A2 EP 1433893 A2 EP1433893 A2 EP 1433893A2 EP 03029559 A EP03029559 A EP 03029559A EP 03029559 A EP03029559 A EP 03029559A EP 1433893 A2 EP1433893 A2 EP 1433893A2
Authority
EP
European Patent Office
Prior art keywords
door
retainer member
condition
retainer
figures
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.)
Granted
Application number
EP03029559A
Other languages
German (de)
English (en)
Other versions
EP1433893A3 (fr
EP1433893B1 (fr
Inventor
Fabrizio Promutico
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.)
Bitron SpA
Original Assignee
Bitron 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.)
Filing date
Publication date
Application filed by Bitron SpA filed Critical Bitron SpA
Publication of EP1433893A2 publication Critical patent/EP1433893A2/fr
Publication of EP1433893A3 publication Critical patent/EP1433893A3/fr
Application granted granted Critical
Publication of EP1433893B1 publication Critical patent/EP1433893B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B47/00—Operating or controlling locks or other fastening devices by electric or magnetic means
    • E05B47/0001—Operating or controlling locks or other fastening devices by electric or magnetic means with electric actuators; Constructional features thereof
    • E05B47/0012—Operating or controlling locks or other fastening devices by electric or magnetic means with electric actuators; Constructional features thereof with rotary electromotors
    • 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
    • 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
    • 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
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B47/00—Operating or controlling locks or other fastening devices by electric or magnetic means
    • E05B47/0001—Operating or controlling locks or other fastening devices by electric or magnetic means with electric actuators; Constructional features thereof
    • E05B2047/0014—Constructional features of actuators or power transmissions therefor
    • E05B2047/0018—Details of actuator transmissions
    • E05B2047/002—Geared transmissions
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B47/00—Operating or controlling locks or other fastening devices by electric or magnetic means
    • E05B47/0001—Operating or controlling locks or other fastening devices by electric or magnetic means with electric actuators; Constructional features thereof
    • E05B2047/0014—Constructional features of actuators or power transmissions therefor
    • E05B2047/0018—Details of actuator transmissions
    • E05B2047/0024—Cams
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B47/00—Operating or controlling locks or other fastening devices by electric or magnetic means
    • E05B2047/0048—Circuits, feeding, monitoring
    • E05B2047/0067—Monitoring
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B47/00—Operating or controlling locks or other fastening devices by electric or magnetic means
    • E05B47/0001—Operating or controlling locks or other fastening devices by electric or magnetic means with electric actuators; Constructional features thereof
    • E05B47/0009—Operating or controlling locks or other fastening devices by electric or magnetic means with electric actuators; Constructional features thereof with thermo-electric actuators, e.g. heated bimetals
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B63/00—Locks or fastenings with special structural characteristics
    • E05B63/0065—Operating modes; Transformable to different operating modes
    • E05B63/0069—Override systems, e.g. allowing opening from inside without the key, even when locked from outside
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05C—BOLTS OR FASTENING DEVICES FOR WINGS, SPECIALLY FOR DOORS OR WINDOWS
    • E05C3/00—Fastening devices with bolts moving pivotally or rotatively
    • E05C3/12—Fastening devices with bolts moving pivotally or rotatively with latching action
    • E05C3/16—Fastening devices with bolts moving pivotally or rotatively with latching action with operating handle or equivalent member moving otherwise than rigidly with the latch
    • E05C3/22—Fastening devices with bolts moving pivotally or rotatively with latching action with operating handle or equivalent member moving otherwise than rigidly with the latch the bolt being spring controlled
    • E05C3/24—Fastening devices with bolts moving pivotally or rotatively with latching action with operating handle or equivalent member moving otherwise than rigidly with the latch the bolt being spring controlled in the form of a bifurcated member

Definitions

  • the present invention relates to a door lock device, particularly for domestic electrical appliances such as washing machines and/or spin dryers.
  • One object of the present invention is to provide an improved door lock device having an extremely reliable operation.
  • the door lock device 1 comprises a support casing 2, for example of moulded plastics material, which is illustrated in partially sectioned form in figures 1 and 2.
  • this support casing 2 has essentially a shaped bowl-like form, with a substantially planar bottom wall 2a. At one end of this bottom wall is formed an aperture 3 which, as will become more clearly apparent hereinafter, is intended to allow the introduction (into the casing or support structure 2) of a door catch 4 connected to a door (not illustrated) of a domestic electrical appliance.
  • the support casing 2. has in plan a substantially L-shape form with an essentially vertical major limb 5 joined to an essentially horizontal minor limb 6.
  • the support casing 2 has a shaped side wall.
  • this side wall comprises two facing, parallel wall portions 2b and 2c, joined together by a wall 2d orthogonal to them.
  • the limb 5 of the support casing 2 has a pair of facing walls 2e and 2f which are essentially rectilinear and which join with another pair of facing wall portions 2g and 2h having respective shapes.
  • the wall portions 2e and 2g join to the wall portions 2b and 2c respectively.
  • the aperture 3 for the introduction of the door catch 4 is formed in the bottom wall of the limb 6 of the support casing 2.
  • a pin generally indicated 9 is mounted so as to be slidable along the guide grooves 7 and 8.
  • a retainer member generally indicated 10 On this pin 9 are rotatably mounted a retainer member generally indicated 10 and the two limbs of a fork end of a lever 11.
  • This slide member (see in particular figure 4) is slidably mounted on the bottom wall 2a of the support casing for movement along a direction (horizontal as seen in figure 4) essentially orthogonal to the sliding direction of the pin 9.
  • the slide member 13 cooperates in use with a main control cam member 14 mounted rotatably about a fixed pin 15 which projects from the bottom wall 2a of the support casing 2.
  • the cam member 14 has an intermediate portion 14a (figure 4) in the form of a wheel, provided with peripheral teeth 14b.
  • the main control member 14 can be turned about the axis of the pin 15 by an electric motor 16 mounted in the casing 2 by means of a gear transmission generally indicated 17.
  • the electric motor 16 is for example a DC/AC electrical motor.
  • a retainer lever generally indicated 18 is intended to cooperate, in a manner which will be described hereinafter, with the retainer member 10.
  • the lever 18 is turnable relative to the support casing 2 both in an essentially vertical plane (for which see figure 4) and in an essentially horizontal plane (for which see figure 3).
  • a recess 23 in the intermediate portion of the lever 18 houses a transverse projection 24 on which is hooked a first end of a coil spring 25 the other end of which is hooked onto the pin 12.
  • the end of the lever 18 nearer the retainer member 10 has a lower feeler projection or pawl 26.intended to cooperate with control profiles of the said retainer member 10.
  • the lever 18 has a terminal heel 29 (see for example figures 2 and 4).
  • This heel 29 is intended to cooperate in use with an upper cam profile 30 of the main control member 14, having an eccentric shape with respect to the axis of the pin 15.
  • the profile 30 is in fact the lateral surface of a formation integral with the member 14 which extends above the intermediate portion 14a of this member.
  • the member 14 has a further control profile 31, also eccentric with respect to the axis of the pin 15, on the opposite side from the profile 30 with respect to the intermediate portion 14a of the said member 14 (see for example figures 4, 8 and 13).
  • the control profile 31 of the cam member 14 is intended to cooperate in use with the slide member 13.
  • the slide member 13 has a rear, convex, arcuate formation 32 intended to interact with the cam profile 31 of the control member 14.
  • the retainer member 10 is associated with a torsion spring 33 disposed'around the pin 9. This pin tends to make the retainer member 10 rotate in the direction of the arrow 34 of figure 6.
  • the retainer member 10 has formations in relief on its periphery defining profiles with which the feeler projection 26 of the lever 18 cooperates in use.
  • a first, essentially longitudinal projection formation 35 (figures 1-3 and 5) which is arcuate and convex, extends from the upper peripheral surface 10a of the member 10.
  • the end of this formation 35 which faces the lever 18 has in plan a progressively tapered form, essentially in the shape of a wedge.
  • the member 10 In longitudinally offset relation with respect to the projecting formation 35 the member 10 has a further projecting formation 36 having in plan a generally V-shape. Between the projecting formations 35 and 36 there is thus defined a channel of essentially of V or U-shape, indicated 37 (see in particular figures 5 and 7).
  • a further formation indicated 38 projecting from the retainer member 10 faces and is spaced laterally from the projecting formations 35 and 36.
  • a microswitch 39 is mounted in the casing 2 of the door lock device below and in an offset position with respect to the microswitch 28 (see in particular figures 2, 5 and 9).
  • the microswitch 39 has a movable control member indicated 39a in figures 3 and 9 controlled by a transverse projection 13a of the slide member 13.
  • the microswitch 28 is intended to provide in operation a signal indicative of the fact that the door or hatch of the domestic electrical appliance is in the closure position.
  • the microswitch 39 is intended to provide a signal when this door or hatch is locked in the closure position.
  • the door lock device described up to now operates essentially in the following manner.
  • the device With the door open, the device assumes the rest configuration shown in figures from 1 to 6.
  • the spring 33 (figure 6) maintains the retainer member 10 in an angular position in which it forms at the aperture 3 of the casing 2 a cavity or notch 10b intended subsequently to cooperate with the door catch 4 of the door of the domestic electrical appliance.
  • the retainer lever 18 has its heel 29 disengaged from the cam profile 30 of the control member 14 (figure 4), the transverse projection 27 of this lever maintains the microswitch 28 in the condition in which it indicates the open condition of the door.
  • the feeler projection 26 of the lever 18 (figure 5) presses against the end portion of the projecting formation 38 of the retainer member 10, at a distance from the projecting formations 36 and 35.
  • a projection 38a of the retainer member 10 presses against an abutment formation 40 formed in the body 2 of the device (figures from 4 to 6).
  • the slide member 13 has its rear tail 32 in engagement with the cam profile 31 of the control member 14.
  • this slide member 13 further has an upper projection 13b (figures 4 and 5) which presses against a transverse stop strip 41 mounted in the casing.
  • the position of the retainer lever 18 in the horizontal plane is stabilised by the engagement of its lateral projection 42 (figure 3) in abutment against the lateral wall portion 2b of the casing 2.
  • the electric motor 16 is deactivated.
  • the control unit of this apparatus causes activation of the electrical motor 16 of the door lock device 1 so as to cause rotation of the control member 14 via the gear transmission 17.
  • the rotation of the control member 14 by means of the cam profile 31 causes translation of the slide member 13 in the direction of the aperture 3 and the door catch 4.
  • This translation in turn involves a translation of the pin 9 of the member 10 along the guides 7 and 8 away from the aperture 3 by means of the interconnection lever 11, as seen for example by comparison of figures 10 and 8.
  • the projection 13a of the slide member 13 engages the control member 39a of the microswitch 39 (figure 9) thus giving the "door locked” signal.
  • the electric motor 16 is then deactivated, and the door lock device is now in the configuration of figures from 10 to 12.
  • the door can subsequently be released by making the electric motor 16 rotate in the opposite sense.
  • the control member 14 is caused to turn in the opposite sense from that previously.
  • the slide member 13 now translates away from the door catch 4, and the pin 9 can translate along the guides 7 and 8 in the direction of the aperture 3, together with the retainer member 10 until the shoulder 38b of this member 10 is disengaged form the abutment surface 40.
  • the biasing spring 33 associated with the member 10 causes rotation of this latter about the pin 9 towards the rest position which allows disengagement of the door catch 4.
  • a release member firmly mounted in the support casing 2 of the door lock device is generally indicated 45 and has an end 45a which extends out from this support casing.
  • the opposite end 45b of the release member 45 is essentially shaped as a hook and has a terminal portion 45c (figure 13) shaped as a rack capable of meshing with a toothing 46 coaxially and fixably associated with the main control member 14.
  • the release member 45 is made of moulded plastics material and its rack-shape end portion 45c is moulded in a "closed” condition in such a way that in operation it tends elastically towards the adjacent link 45d of the release member (figure 13).
  • a projection 47 extending in the direction of the bottom wall 2a of the casing of the device, and intended in use to follow a predetermined path in a suitably shaped portion of the bottom wall 2a of the casing 2, generally indicated 48 in figures 1,3, 9 and 14.
  • the release member 45 has two projections or transverse resilient arms 49, the distal ends of which rest against arcuate opposing surfaces 50 which converge in the direction of the end 45a of the member 45 (see for example figures 3 and 13).
  • release member 45 At rest the release member 45 is disposed as shown in figures 3 and 13 with its rack 45c adjacent to but disengaged from the toothed wheel 46 of the main control member 14.
  • the projection or tooth 47 of the release member 45 extends inwards of a groove 51 of essentially P-shape, formed in the formation 48 of the bottom of 2a of the casing of the device (figure 14).
  • FIGS 15 and 16 there is illustrated a variant embodiment which allows the performance of a further security function (the so-called "child-safety” function).
  • a further security function the so-called "child-safety” function.
  • the transverse stop element 41 is an elastically deformable blade in the form of a leaf spring fixed at its ends.
  • the stop element 41 serves as an abutment element for the projection 13b of the slide member 13, in particular when the door is closed but not yet locked as is shown in figure 15.
  • the cam profile 31 of the control member 14 is modified (compare figure 15 with figure 18) in such a way that between the rear tail 32 of the slide member 13 and this cam profile there is now defined a distance indicated a in figure 15.
  • the variant according to figures from 17 to 20 differs essentially by the different disposition and configuration of the interacting parts of the retainer lever 18 and the member 10.
  • the interacting parts are now found on two facing surfaces of the lever 18 and the retainer member 10 respectively.
  • the member 10 which has a feeler projection 126 which cooperates with projections and profiles pre-arranged in a lateral face of the retainer lever 18.
  • the door lock device When the door has reached the closure position the door lock device is as shown in figure 20d: the pin 126 is disposed and retained in the cavity of the projection 136. In this case, before the door is locked in the closure position - after activation of the electric motor 16 - this door can again be opened, by means of a thrust exerted on the door or by means of a tension exerted on it as is shown in figure 20e and 20f respectively.
  • the electric motor 16 of the door lock device is a unidirectionally rotatable AC motor.
  • the main control member 14 rotatable on the pin 15 has a further cam profile which is followed by a feeler member 61 mounted rotatably about an axis 62.
  • the feeler member 61 is connected to a movable contact member 63 having one end stably connected to a first electrical terminal 64 accessible from outside and the other end capable of commuting (by the effect of the displacement of the feeler 61) between two extreme positions shown in figures 21 and 22 respectively, in which they are found in contact with a first and a second conductor member respectively, clenched onto corresponding terminals 65 and 66 also accessible from outside.
  • a coil spring 67 which tends to press this feeler member into engagement with the cam profile 60 of the rotatable control member 14.
  • the cam profile 60 has in particular a notch 68 in which the tip of the feeler member 61 can engage when the door is closed but not locked.
  • the movable contact 63 (figure 2) connects the terminals 64 and 65 together.
  • the cam profile 60 further has a projection 69 (figure 22) with which the tip of the feeler member 61 engages when the door is closed and locked. In this condition the movable contact 63 connects the terminals 64 and 66 together.
  • the cam 60, the feeler 61, the movable contact 63 and the terminals 64 to 66 overall constitute a sort of position sensor which makes it possible to indicate to the control unit the instantaneous condition of the door (open, closed, closed and locked, intermediate position).
  • the door lock according to figures 21 and 22 does not therefore have the microswitch 29 of the versions of the preceding figures.
  • the device according to figures 21 and 22 can also conveniently include the components, and be arranged to performed the functions of the previously described versions.
  • the device according to figures 23 et seq also comprise a single microswitch 28, and a position sensor device associated with the main control member 14 and including a cam profile 60 (see for example figure 29) with which cooperates a feeler member 61 connected to a movable conductive control member 63. This latter is stably connected to an electrical terminal 64, and is selectively commutable between the other two electrical terminals indicated 65 and 66.
  • the cam profile 60 is similar to that already described above with reference to figures 21 and 22.
  • the device has a further electrical connector terminal 70, accessible from the exterior (see for example figures 28 and 31).
  • a tablet resistor 71 of positive temperature coefficient (PTC) type is disposed between the terminals 64 and 70 disposed between the terminals 64 and 70 .
  • PTC positive temperature coefficient
  • One end of a bimetallic strip 72 is connected to the terminal 64 adjacent to this resistor 71.
  • a control member associated with the cam control member 14 is indicated 73 and rotatably mounted in the support casing 2 of the door lock device about an axis indicated 74 (see for example figures 28 and 31).
  • control member 73 is essentially a lever having an L-shape rotatable about the axis 74 which passes through one end thereof. The free end of the bimetallic strip 72 is engaged in a notch 75 the other end of this lever.
  • the cam 60, feeler 61, the movable contact 63 and the terminals 64 to 66 of the assembly also constitute a position sensor which makes it possible to indicate to a control unit the instantaneous condition of the door. It is seen, however, that with respect to the version of figures 21 and 22, in the device according to figures 23 et seq , the cam 60 is disposed upon the lower face of the main controller 14 (see for example figure 24 or figure 40).
  • control member 73 In its intermediate portion the control member 73 has a shaped through hole 76, through which the upper end of the pin 15 extends with clearance, about which, beneath this control member 73, the main control member 14 is rotatably mounted. This member 14 is actually pressed upwardly in the direction of the control member 73 by a coil spring 77 disposed about the pin 15 and beneath this main control member 14 (see for example figures 24 and 29).
  • the control member 73 is coupled to the control member 14 and is capable of controlling its operation in a manner which will be described better hereinafter.
  • the upper face of the control member 14, which faces the control member 73 has coupling formations generally indicated 77 in figure 25, intended to cooperate in ways which will be better described hereinafter with corresponding formations formed in the lower face of the control member 73 and generally indicated 78 in figure 26.
  • the loose coupling between the upper end of the fixed pin 15 and the shaped aperture 76 of control member 73 is such as to allow this latter to perform a limbed rotation about its pivot axis 74 under the control of the bimetallic strip 72 in dependence on the temperature of the heating resistor 71.
  • the coupling formations 77 of the main control member 14 include a central hub 79 in which is defined a central axial aperture 80 into which the fixed pin 15 extends.
  • the proximal portion or root of the hub 79 is surrounded by the eccentric cam 30.
  • the upper surface of this cam 30 has respective lower and upper portions 83 and 84 respectively, offset from one another and connected by two inclined planes 85 (of which only one is visible in figure 25).
  • the inclined planes 85 join at their upper ends with respective teeth 86 which are upstanding with respect to the plane of the upper portion 84 of the upper surface of the cam 30.
  • the aperture 76 of the control lever 73 has a section essentially corresponding to the connection of two circumferences having different diameters.
  • an end portion 76a of this aperture has a diameter corresponding essentially to, or slightly greater than, that of the fixed pin 15 (figure 27).
  • the remaining portion 76b of the aperture 76 has a diameter corresponding essentially to, or slightly greater than, the diameter d of the hub 79 of the control member 14.
  • a seat or recess 87 in the aperture 76 (figure 27), the sidewall of which has a diameter corresponding essentially to, or slightly greater than, the diameter d of the hub 79 of the member 14.
  • the cylindrical sidewall of the recess 87 joins with that of the portion 76b of the aperture 76 through two facing parallel flats 88 and 89, of which the first is more extensive than the second.
  • the distance between these flats, indicated d2 in figures 26 and 32 corresponds essentially to, or is slightly greater than, the distance d1 between the flats 81 and 82 of the hub 79 of the control member 14 (see in particular figure 32).
  • the coupling between the control member 73 and the main control member 14 is such that the hub 79 of the member 14 extends into the recess 87 of the control member 73.
  • the upper surface 79a of the hub 79 is in contract with the bottom wall 87a of the recess 87.
  • the lower face of the control member 73 has an essentially flat surface portion 73a which by means of two ascending inclined surfaces 90 and 91 joins with a flat surface 92 which surrounds the recess 87 and which is in turn arcuate and lowered with respect to a main surface 93 of the lower face of the member 73.
  • the door lock device 1 is shown in the door closed but not locked condition.
  • the tail 32 of the slide member 13 is not blocked by the cam profile of the member 14 (figure 29).
  • the hub 79 of this control member 14 extends into the recess or seat 87 of the control member 73 (figures 31 and 32), the distal end of the fixed pin 15 extends into the smaller diameter portion 76a of the shaped aperture 76.
  • the control member 73 cannot rotate about the axis 74 relative to the control member 14 because of the angular position assumed by the hub 79 of the member 14 in the seat 87 of the member 73.
  • the tip or tooth of the feeler member 61 engages in the notch 68 of the cam 60 (figure 3) so that the movable contact 63 interconnects the fixed contacts 64 and 65, providing an indication that the door is closed but not locked (figures 28, 30 and 31).
  • the activation of the electrical motor 16 causes a rotation of the main control member 14 in such a way that this member passes from the angular position illustrated in figure 30 to that shown in figure 34.
  • the cam profile 31 engages the rear tail 32 of the slide member 13 preventing retraction of this latter (see also figure 33).
  • the door of the appliance is locked in the closure position.
  • the feeler member 61 engages the projection 69 of the cam 60 (figure 34) and the movable contact 63 connects the fixed contacts 64 and 66 together providing an indication or signal that the door is closed and locked (figures 34 and 35).
  • the hub 79 of this latter is disposed essentially as shown in figure 36, that is with its flats 81 and 82 aligned with the corresponding flats 88 and 89 of the control lever 73. In this condition the hub 79 of the member 14 will be able to allow a relative rotation of the member 73 with respect to the member 14. This rotation is however prevented by the bimetallic strip 72 which maintains the member 73 in the position shown in figures 35 and 36.
  • the heating resistor 71 gradually cools and correspondingly tends gradually to "straighten out " the bimetallic strip 72.
  • the control member 73 is turned about the axis 74, this rotation being permitted by the alignment between the flats 88 and 89 of this member with the flats 81 and 82 of the hub 79 of the member 14.
  • the member 73 now gradually moves into the position shown in the drawings by 37 - 39.
  • the hub 79 of the member 14 faces and its axis is in alignment with the greater diameter portion 76b of the aperture 76 in the member 73 (figure 38) and, under the thrust of the spring 77 (figure 39) is displaced along the fixed pin 15 towards the member 73 by an amount such as to allow disengagement of the cam 31 from the tail 32 of the slide member 13 (figures 39 and 40).
  • the slide number 13 can thus displace allowing the passage of the retainer member 10 to the position shown in figure 39, in which the door of the domestic electrical appliance is closed but not locked.
  • the feeler member 61 engages a portion of the cam profile 60 which is lowered with respect to the projection 69 (see figure 40) so that the movable contact 63 is disposed in an intermediate position between the contacts 66 and 65 (figure 41).
  • the door lock device can be reactivated (by the electronic control unit of the appliance) with a sufficient delay to allow the PTC 71 resistor to heat the bimetallic strip 72 preliminarily.
  • the activation of the electric motor 16 causes a rotation of the member 14 during which the inclined planes 86 of the member 14 meet the corresponding inclined planes 91 and 90 of the control member 73 (figure 26).
  • the coupling between these inclined planes is such as to cause a progressive lowering of the member 14 along the fixed pin 15 until the upper surface 79a of the hub 79 is brought below the level of the bottom surface 77a of the seat 87 of the member 73.
  • the steps 86 serve at this point to ensure that the end surface 79a of the hub 79 of the member 14 is brought slightly below the surface 87a of the seat 87.
  • the bimetallic strip 72 Upon reaching this condition the bimetallic strip 72 causes a rotation of the control member 73 with respect to the member 14 so as to bring these member 14 and 73 into the condition shown in figure 36.
  • the feeler member 61 re-engages the projection 69 of the cam 60 and the movable contact 63 is disposed again in the position in which it interconnects the contacts 64 and 66 (figure 35) reinstating the door closed and locked indication.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Lock And Its Accessories (AREA)
EP03029559A 2002-12-23 2003-12-22 Dispositif de verrouillage d'une porte, particulièrement pour des appareils électroménagers Expired - Lifetime EP1433893B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITTO20021112 2002-12-23
IT001112A ITTO20021112A1 (it) 2002-12-23 2002-12-23 Dispositivo blocca-porta, particolarmente per elettrodomestici.

Publications (3)

Publication Number Publication Date
EP1433893A2 true EP1433893A2 (fr) 2004-06-30
EP1433893A3 EP1433893A3 (fr) 2004-08-11
EP1433893B1 EP1433893B1 (fr) 2009-12-09

Family

ID=32448948

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03029559A Expired - Lifetime EP1433893B1 (fr) 2002-12-23 2003-12-22 Dispositif de verrouillage d'une porte, particulièrement pour des appareils électroménagers

Country Status (3)

Country Link
EP (1) EP1433893B1 (fr)
DE (1) DE60330434D1 (fr)
IT (1) ITTO20021112A1 (fr)

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006063684A1 (fr) * 2004-12-16 2006-06-22 Emz-Hanauer Gmbh & Co. Kgaa Serrure de porte pour la porte d'un appareil menager
WO2008096222A2 (fr) * 2007-02-05 2008-08-14 Itw Metalflex, Druzba Za Proizvodnjo Delov Za Gospodinjske Aparate, D.O.O. Dispositif de blocage pour la porte d'un appareil électroménager électrique, en particulier la porte d'une machine à laver
US7731806B2 (en) 2003-02-25 2010-06-08 Illinois Tool Works, Inc. Automatic door for dishwasher
DE102012013703A1 (de) * 2012-07-10 2014-01-16 Gantner Electronic Gmbh Elektronisches Schloss mit Zustandskontrolleinrichtung
ITPD20130043A1 (it) * 2013-02-26 2014-08-27 Topp S P A A Socio Unico Serratura elettrica per ante scorrevoli
US20150035295A1 (en) * 2013-07-31 2015-02-05 Illinois Tool Works Inc. Door latch and a dishwasher mounted with the door latch
WO2015187223A1 (fr) * 2014-06-03 2015-12-10 Illinois Tool Works Inc. Serrure de porte pour appareil ménager pourvue d'un mécanisme de détection de crochet
GB2527735A (en) * 2014-05-04 2016-01-06 Haigh Eng Co Ltd Lid interlock apparatus
IT201700099948A1 (it) * 2017-09-06 2019-03-06 Elettrotecnica Rold Srl Dispositivo per la chiusura e apertura di sportelli, in particolare di sportelli di elettrodomestici quali lavatrici o simili
IT201800004000A1 (it) * 2018-03-27 2019-09-27 Illinois Tool Works Blocco-porta per elettrodomestici, in particolare lavatrici e simili, con meccanismo di riduzione di forza perfezionato
IT201800004012A1 (it) * 2018-03-27 2019-09-27 Illinois Tool Works Blocco-porta per elettrodomestici, in particolare lavatrici e simili, con meccanismo di blocco perfezionato
CN111021837A (zh) * 2019-11-25 2020-04-17 青岛海尔滚筒洗衣机有限公司 用于衣物处理设备的门锁装置及衣物处理设备
US20210278090A1 (en) * 2018-07-20 2021-09-09 Samsung Electronics Co., Ltd. Oven
CN114108256A (zh) * 2020-08-31 2022-03-01 emz-汉拿两合有限公司 家用电器及其门闩
EP4159963A4 (fr) * 2020-06-01 2024-07-24 Lg Electronics Inc Appareil électroménager
EP4155486A4 (fr) * 2020-05-22 2024-07-24 Lg Electronics Inc Appareil électroménager

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DE4426611A1 (de) * 1994-07-27 1996-02-01 Bosch Siemens Hausgeraete Betätigungsvorrichtung für einen Türverschluß
US5520424A (en) * 1995-01-30 1996-05-28 U.S. Controls Copr. Tamper-proof door switch and latch device
DE19601230A1 (de) * 1996-01-15 1997-07-17 Zangenstein Elektro Türverriegelung
WO2001081696A1 (fr) * 2000-04-21 2001-11-01 Bitron S.P.A. Dispositif de verrouillage de porte pour appareil menager electrique
EP1217117A1 (fr) * 2000-12-22 2002-06-26 Elektromanufaktur Zangenstein, Hanauer GmbH & Co. KGaA Dispositif pour verrouiller et déverrouiller une serrure de porte d'un appareil électrique
WO2002095171A1 (fr) * 2001-05-23 2002-11-28 Siemens Aktiengesellschaft Dispositif de commande

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Publication number Priority date Publication date Assignee Title
US4082078A (en) * 1976-10-06 1978-04-04 Litton Systems, Inc. Pyrolytic lock assembly
DE4426611A1 (de) * 1994-07-27 1996-02-01 Bosch Siemens Hausgeraete Betätigungsvorrichtung für einen Türverschluß
US5520424A (en) * 1995-01-30 1996-05-28 U.S. Controls Copr. Tamper-proof door switch and latch device
DE19601230A1 (de) * 1996-01-15 1997-07-17 Zangenstein Elektro Türverriegelung
WO2001081696A1 (fr) * 2000-04-21 2001-11-01 Bitron S.P.A. Dispositif de verrouillage de porte pour appareil menager electrique
EP1217117A1 (fr) * 2000-12-22 2002-06-26 Elektromanufaktur Zangenstein, Hanauer GmbH & Co. KGaA Dispositif pour verrouiller et déverrouiller une serrure de porte d'un appareil électrique
WO2002095171A1 (fr) * 2001-05-23 2002-11-28 Siemens Aktiengesellschaft Dispositif de commande

Cited By (32)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7731806B2 (en) 2003-02-25 2010-06-08 Illinois Tool Works, Inc. Automatic door for dishwasher
US8991877B2 (en) 2004-12-16 2015-03-31 Emz-Hanauer Gmbh & Co. Kgaa Door lock for the door of a household appliance
WO2006063684A1 (fr) * 2004-12-16 2006-06-22 Emz-Hanauer Gmbh & Co. Kgaa Serrure de porte pour la porte d'un appareil menager
WO2008096222A3 (fr) * 2007-02-05 2008-10-09 Itw Metalflex Druzba Za Proizv Dispositif de blocage pour la porte d'un appareil électroménager électrique, en particulier la porte d'une machine à laver
WO2008096222A2 (fr) * 2007-02-05 2008-08-14 Itw Metalflex, Druzba Za Proizvodnjo Delov Za Gospodinjske Aparate, D.O.O. Dispositif de blocage pour la porte d'un appareil électroménager électrique, en particulier la porte d'une machine à laver
DE102012013703A1 (de) * 2012-07-10 2014-01-16 Gantner Electronic Gmbh Elektronisches Schloss mit Zustandskontrolleinrichtung
DE102012013703B4 (de) * 2012-07-10 2014-10-23 Gantner Electronic Gmbh Elektronisches Schloss mit Zustandskontrolleinrichtung
ITPD20130043A1 (it) * 2013-02-26 2014-08-27 Topp S P A A Socio Unico Serratura elettrica per ante scorrevoli
EP2770140A1 (fr) * 2013-02-26 2014-08-27 Topp S.p.A. A Socio Unico Serrure électrique pour portes coulissantes ou obturateurs
US20150035295A1 (en) * 2013-07-31 2015-02-05 Illinois Tool Works Inc. Door latch and a dishwasher mounted with the door latch
US10858859B2 (en) * 2013-07-31 2020-12-08 Illinois Tool Works Inc. Door latch and a dishwasher mounted with the door latch
GB2527735B (en) * 2014-05-04 2020-10-28 The Haigh Eng Company Ltd Lid interlock apparatus
GB2527735A (en) * 2014-05-04 2016-01-06 Haigh Eng Co Ltd Lid interlock apparatus
US10914026B2 (en) 2014-06-03 2021-02-09 Illinois Tool Works Inc. Door lock for home appliance with hook sensing mechanism
WO2015187223A1 (fr) * 2014-06-03 2015-12-10 Illinois Tool Works Inc. Serrure de porte pour appareil ménager pourvue d'un mécanisme de détection de crochet
CN111386374A (zh) * 2017-09-06 2020-07-07 罗德电工有限公司 用于关闭和打开舱门的装置，特别地用于诸如洗衣机等的家用电器的舱门
IT201700099948A1 (it) * 2017-09-06 2019-03-06 Elettrotecnica Rold Srl Dispositivo per la chiusura e apertura di sportelli, in particolare di sportelli di elettrodomestici quali lavatrici o simili
WO2019049057A1 (fr) * 2017-09-06 2019-03-14 Elettrotecnica Rold S.R.L. Dispositif de fermeture et d'ouverture de trappes, en particulier de trappes d'appareils électroménagers tels que des machines à laver ou similaire
WO2019190976A1 (fr) * 2018-03-27 2019-10-03 Illinois Tool Works Inc. Serrure de porte pour appareils ménagers, en particulier machines à laver et similaires, avec mécanisme de verrouillage amélioré
IT201800004000A1 (it) * 2018-03-27 2019-09-27 Illinois Tool Works Blocco-porta per elettrodomestici, in particolare lavatrici e simili, con meccanismo di riduzione di forza perfezionato
CN112272719B (zh) * 2018-03-27 2023-09-01 伊利诺斯工具制品有限公司 具有改进的减力机构的用于家用电器，特别是洗衣机等的门锁
WO2019190975A1 (fr) * 2018-03-27 2019-10-03 Illinois Tool Works Inc. Système de verrouillage pour appareils ménagers, en particulier machines à laver et similaires, ayant un mécanisme de réduction de force amélioré
CN112272718A (zh) * 2018-03-27 2021-01-26 伊利诺斯工具制品有限公司 具有改进的锁定机构的用于家用电器，特别是洗衣机等的门锁
CN112272719A (zh) * 2018-03-27 2021-01-26 伊利诺斯工具制品有限公司 具有改进的减力机构的用于家用电器，特别是洗衣机等的门锁
IT201800004012A1 (it) * 2018-03-27 2019-09-27 Illinois Tool Works Blocco-porta per elettrodomestici, in particolare lavatrici e simili, con meccanismo di blocco perfezionato
CN112272718B (zh) * 2018-03-27 2023-10-10 伊利诺斯工具制品有限公司 具有改进的锁定机构的用于家用电器，特别是洗衣机等的门锁
US20210278090A1 (en) * 2018-07-20 2021-09-09 Samsung Electronics Co., Ltd. Oven
CN111021837A (zh) * 2019-11-25 2020-04-17 青岛海尔滚筒洗衣机有限公司 用于衣物处理设备的门锁装置及衣物处理设备
EP4155486A4 (fr) * 2020-05-22 2024-07-24 Lg Electronics Inc Appareil électroménager
EP4159963A4 (fr) * 2020-06-01 2024-07-24 Lg Electronics Inc Appareil électroménager
CN114108256A (zh) * 2020-08-31 2022-03-01 emz-汉拿两合有限公司 家用电器及其门闩
CN114108256B (zh) * 2020-08-31 2024-03-12 emz-汉拿两合有限公司 家用电器及其门闩

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ITTO20021112A1 (it) 2004-06-24
EP1433893A3 (fr) 2004-08-11
EP1433893B1 (fr) 2009-12-09

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