EP1217117B1 - Vorrichtung zum Sperren und Freigeben eines Türschlosses eines elektrischen Gerätes - Google Patents
Vorrichtung zum Sperren und Freigeben eines Türschlosses eines elektrischen Gerätes Download PDFInfo
- Publication number
- EP1217117B1 EP1217117B1 EP00128370A EP00128370A EP1217117B1 EP 1217117 B1 EP1217117 B1 EP 1217117B1 EP 00128370 A EP00128370 A EP 00128370A EP 00128370 A EP00128370 A EP 00128370A EP 1217117 B1 EP1217117 B1 EP 1217117B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- state
- release unit
- blocking
- actuator
- release
- 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.)
- Expired - Lifetime
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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
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- 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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S292/00—Closure fasteners
- Y10S292/65—Emergency or safety
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S292/00—Closure fasteners
- Y10S292/69—Washing machine or stove closure latch
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T292/00—Closure fasteners
- Y10T292/68—Keepers
- Y10T292/696—With movable dog, catch or striker
- Y10T292/699—Motor controlled
Definitions
- the present invention relates to a device for locking and releasing a door lock or a door latch for electrical appliances and in particular household electrical appliances.
- the present invention relates a device that allows a door lock or a door lock an electrical device, such as a washing machine, a dishwasher or a tumble dryer, im Normal operation to lock to unlock an undesired or Opening the door lock or the door lock to prevent.
- the present invention enables the door lock or the door latch for unlocking or opening automatically to release automatically when the electric Device is in an abnormal operating condition.
- interlock or Locking devices While the unlock function of interlock or Locking devices are provided in normal operation can, is unlocking a door lock or a door lock usually not by means of such devices more possible if the electrical device deviates from desired operating conditions in a non-normal operating state located. This is the case, for example a failure of the power supply for the electrical device is present, or the electrical device does not have an electrical Energy supply is connected. Interlocking or Locking devices, which is an unwanted opening of the door prevent an electrical device in normal operation generally operated using electrical energy. Thus, a failure or lack of electrical leads Energy supply to that in normal operation by such a device secured or locked door can not be opened.
- the door of a Washing machine or dishwasher in normal operation by means of a device to lock a lock or a door hook and having a locking body.
- the locking body gives in an open position the locking pin or the door hook free for a door opening while in a closed position the locking pin or the door hook at a door opening prevents.
- To the locking body in the open position and to bring the closed position becomes a bistable element used by means of a force-generating element in two positions can be prestressed.
- the bistable element is a movement of the locking body from its closed position in its open position.
- the bistable element allows in a second Position a movement of the locking body from the Closed position in its open position.
- the bistable element thus provides the locking and release function described above during normal operation of a washing machine or dishwasher ready.
- the bistable element is powered by two independent magnets its first and second position moves, being for transitions between the positions to overcome a snap point is that used by one as the force-generating element Spring is provided. Furthermore, a locking bolt is used there, the means of the bistable element the locking body locked in its closed position and to release the locking body of the bistable element except Engagement is brought with the locking body.
- an emergency release lever moves the Locking bar so that this out of engagement with the locking body is brought.
- the operation of the emergency release lever For example, by means of a rope or Bowden cable, which is usually a side wall or the bottom of the washing machine or dishwasher is performed.
- this emergency release also allows the appliance door during normal operation of the washing machine or dishwasher can be opened as a user independently via a Actuation of the emergency release lever that of the locking device provided safeguards against disable unwanted opening of the appliance door can.
- Another disadvantage is that in one not normal operating condition of the washing machine or dishwasher the emergency release manually performed by a user. This is sometimes complicated, since the press the emergency release lever used on hard-to-reach trains Positions are arranged. In addition, it is necessary that the user is informed as a Emergency release is carried out.
- a Locking device used by means of a thermal element movable blocking element and by means of a Electromagnet movable release element comprises.
- the thermocouple In the normal Operation of a household appliance, in which this locking device is used, the thermocouple is under Energizer so heated that it is the blocking element in a Locking position moves, which is a locking pin or a door hook a door locks to prevent unwanted opening to prevent.
- the release element by means of the electrically activated electromagnet moved so that it is the blocking element from the locked position in brings a release order. In the release order exists no operative connection between the blocking element and the Locking hook or the door hook.
- the Blocking element In normal operation is the Blocking element through the thermocouple in its blocking position held for a suitable heating and the resulting Position electrical energy is supplied.
- thermocouple is no longer heated.
- thermocouple cools and goes in its starting position over, whereby the blocking element is not held in its locked position, but in his Release order passes. This will be an emergency release provided in the case of a user no Measures are to be taken.
- thermocouple is used, to bring the locking element in the locked position and in the Hold locked position. Due to the time required, which is needed to heat the thermocouple so that the blocking element is brought into the locked position, locked this locking device does not open the appliance door forcibly simultaneously with the time at which the home appliance is put into operation. Especially for household appliances, where rotating components are used, this can be a danger. Due to the time delay Locking can be done immediately after a user Commissioning the household appliance open its door again and be injured by trailing rotating components. Furthermore, the thermocouple does not guarantee that the blocking element is held securely in its blocking position, since it is necessary for this, the thermocouple during the Normal operation of the household appliance under power supply too heat. For example, a failure of the thermocouple or its electrical supply cause the Appliance door released during operation of the household appliance and thus can be opened.
- GB 2 080 399 A discloses a device having the features of the preamble of claim 1.
- US-5,832,017 discloses a door latch for a washing machine, by means of an electromagnetic Actuator a lock and release unit from a release state is brought into a locked state.
- the object of the present invention is to provide a device a door lock or a door lock of an electric Device and in particular a household electrical appliance safely locked in normal operation to prevent unwanted opening of one To prevent appliance door, and ensures that the appliance door is automatically unlocked for opening when the device is in an abnormal operating condition.
- the present invention provides a device for locking and releasing a door lock of an electrical appliance according to Claim 1 ready.
- the device comprises a blocking and releasing unit, in a locked state, the locked door lock of the Device locks to unlock the locked door lock to prevent. In a release state allows the lock and Release unit unlocking the door lock by the (still locked) door lock releases.
- the device has a Emergency release unit, which in an abnormal operating condition of the device, e.g. in the event of a power failure, the blocking and enabling unit brings into the release state.
- the emergency release device independent, automatically activated, so that no measures are to be performed by a user.
- the emergency release unit comprises an actuator in order to to cause a transition to the working state, and a force-generating Element to cause a transition to hibernation, or an actuator to transition to hibernate cause, and a force-generating element to make a transition in the To effect working condition.
- a transition is made to the emergency release unit from the idle state to the working state by an actuator causes.
- the actuator separately executed force-generating element, such as e.g. a spring, used.
- the actuator is activated during commissioning of the electrical device, so that he brings the emergency release unit in the working state (emotional). If the emergency release unit in a normal operating condition of the electrical device go into hibernation is the actuator is deactivated and the force-generating element causes the desired state change.
- the force-generating element is effective for a transition to hibernation, is the To arrange actuator and / or to use a suitable actuator type, that a non-normal operating state of the electrical device also causes a deactivation of the actuator.
- the emergency release unit preferably one or, if necessary, several actuators which Transitions to the working state and the hibernation effect (s).
- the use of a lock and unlock unit of the door lock allows a compact design of the invention Device and avoids the above-described wear in known Devices.
- the emergency release unit ensures that the Door lock when needed, i. in general for a non-normal Operating state of the device, released for opening or unlocking becomes. Since the emergency release unit preferably separate from the lock and Enabling unit is executed, accordingly, the characteristics their functions are defined separately. For example may be the time required by the emergency release unit is to enter the lock and release unit in the release state bring regardless of the technical specifications of the Locking and release unit are specified application-specific. As well the times and / or ranges for the states of the Locking and releasing unit and independent for transitions between these states be specified by the execution of the emergency release unit.
- an operative connection with the door lock can be used at a lock of the door lock, for example when closing the appliance door, the lock and release unit in the locked state emotional. Preferably, this will be substantially immediately after or simultaneously with the actual locking of the door lock ingested.
- actuatable components e.g. electromagnetic or piezostrictive components, used to make a transition of Lock and release unit to effect in the locked state. Further is ensured in this way that the actual closing the appliance door, i. when locking the door lock, the Door lock is locked.
- electric controlled Actuators such as (miniaturized) electric drives, Electromagnet or piezostrictive acting components are used.
- This embodiment allows the door lock and thus the To be able to open the appliance door until the appliance is actually in Operation is taken.
- the transition the lock and release unit in the locked state in relation to To effect a commissioning of the device with a time delay. To this Way, it is possible the lock on the door lock only then when opening the door really undesirable is or actually represents a danger.
- electromagnets To the lock and release unit from the lock state to the release state electric drives, electromagnets, piezostrictive actuators and the like may be used.
- one used for the transition to the release state Actuator also for a transition from the release state in used the lock state.
- the emergency release unit has an idle state and a working state on, wherein at a transition from the working state in the Hibernate the lock and release unit in the release state is brought.
- the emergency release unit is in the working state, if during normal operation of the electrical device the Locking and release unit is in its locked state. in this connection the emergency release unit can be put into working condition, by using a suitable active compound with the Locking and releasing unit the emergency release unit from the idle state is brought into the working state when the lock and release unit goes into its locked state.
- a transition of emergency release unit is brought from the idle state to the working state when the lock and release unit is already in the locked state or before the lock and release unit brought into the locked state becomes.
- the emergency release unit is in normal operation of the electrical appliance in the resting state when the Locking and release unit is in the release state.
- the emergency release unit in a normal Operation of the electrical device in response to a transition of Blocking and release unit from the blocking state to the release state goes into hibernation.
- This can be done for example by means of an active compound, preferably the above-mentioned active compound between the emergency release unit and the lock release unit so that the state transitions of the units substantially run synchronously.
- the transition of the emergency release unit controlled in their idle state or uncontrolled take place with a time delay.
- the emergency release unit has an emergency energy supply device for the actuator, which causes a transition to the idle state, or for the force-generating element.
- the Not energiezucht Hughes leads for a transition to the idle state of the emergency release unit at a not normal operating state of the electrical device this actuator or the force-generating element energy to activate them.
- the Not energiezucht nails can also be used at a normal operation of the electrical device, the actuator or to activate the force-generating element, which in general it is provided that this energy supply by means of facilities is carried out during normal operation for power supply of the electrical device.
- the emergency release unit may include an energy supply device include, during normal operation of the electrical device the transition to the working state causing actuator for Activation of the same energy supplies. Depending on how Transitions to the work and rest conditions can be generated this Energy supply optional or in addition to the Not energiezucht adopted executed be. Further, it is provided a combined power supply component to use the features of the emergency energy supply device and the energy supply device provides.
- the actuator (s) include the emergency release unit (s) a thermally sensitive, thermally actuated Element, e.g. a PCT element, elements with bimetallic Components or a wax engine.
- a thermally sensitive, thermally actuated Element e.g. a PCT element, elements with bimetallic Components or a wax engine.
- This will be the actuator activated by being supplied with electrical energy to to heat the thermally sensitive element.
- the one by one such a change of state or position caused of the actuator (movement of the actuator) is determined by means of appropriate Active compounds with corresponding, unspecified here movable components of the emergency release unit for Transitions to the working state and / or the idle state used.
- the use of a wax engine offers here due to its high thermal expansion coefficient at.
- the actuator (s) may (may) be an electric motor, an electromagnetic actuator or at least comprise a magnet.
- the Not energiezucht To those required for a transition to hibernation Energy without external energy supply can provide the Not energiezucht adopted a capacitor, an accumulator, a solar cell or combinations thereof. It is preferable that the Not energiezucht adopted during normal operation of the electrical device Energy absorbs or stores these in a non-normal way To provide operating status.
- the normal operating conditions differ and additionally require that unlocking of the door lock and prevents the door from opening becomes.
- An example of this is a washing machine, at which is interrupted due to a power failure, the operation and whose water level in the laundry drum is so high that would escape water when opening the door.
- a release of the door lock by the Emergency release unit can be prevented.
- the inventive Device a release device for the Emergency release unit, which depends on parameters, the a non-normal operating state of the electrical device characterize a transition of emergency release unit in their resting state allows.
- the parameters for controlling the Release device can, if an electrical energy supply, for example, the Not energiezuschreib Rhein and / or the energy supply device of the emergency release unit, is available, by electrical means or by means of a mechanical arrangement (for example water level float to be provided.
- Fig. 1a to 1d show a known door lock 2 with a order an axle 4 rotatable gripping device 6 formed therein a trap 8 has.
- the trap 8 acts with a Locking cam 10 together so that a movement of the locking pin 10 when closing a door, not shown the Gripping device 6 rotates so that the door lock 2 locks becomes.
- a corresponding movement rotates of the locking block 10, the gripping device 6 in a in Compared to closing opposite direction of rotation, causing the door lock 2 is unlocked.
- FIGS. 1a to 1d show components 16 to 34 of FIG Locking and releasing unit 12 and components 36 to 52 a Emergency release unit 14 for an embodiment of a device for locking and releasing the door lock 2.
- the components the lock and release and emergency release units 12 and FIG. 14 will be explained with reference to FIG. 1a. For the Description of the operation of this embodiment will become Fig. 1a to 1d reference.
- the lock and release unit 12 has an electromagnetic Actuator 16 and a movable by this magnetic plunger 18 on. According to Fig. 1a to 1d, the magnetic plunger 18th movable to the left and right. The magnetic plunger 18 engages in an end of a lever 20 rotatable about an axis 20 a.
- the Lever 22 is a bistable element, which by a spring 24 be biased in two positions described below can. Further, the spring 24 is arranged here so that for Transitions of the lever 22 between its positions required Forces at least partially provided by the spring 24 become. This is achieved by a movement the lever 22 stored in the spring 24 potential Energy after overcoming a snap point in kinetic Energy is converted to forces in the original direction of movement of the lever 22.
- the design of the lever 22 is reduced as a bistable element required for the electromagnetic actuator 16 Energy, since the electromagnetic actuator 16 is not needed is to hold the lever 22 in one of the positions.
- the lever 22 may also be a conventional lever, when the electromagnetic actuator 16 and / or the magnetic plunger 18 and / or other means not shown, that the lever 22 occupies and maintains positions which, as described below, for the operation of the Locking and release unit 12 are required.
- One with the magnetic plunger 18 in operative connection End opposite end of the lever 22 is by means of a articulated connection 26 with one end 28 of a locking and Release element 30 connected.
- This executed as a slider Locking and release element 30 has in the region of the door lock 2 on a blocking surface 32.
- a the end 28 opposite End 34 is used to operate the lock and Release element 30 through the emergency release unit 14 to how explained below, the lock and release unit 12 at a non-normal operating state of an electrical appliance, whose appliance door is locked and unlocked with the door lock 2 can be, the door lock 2 for unlocking release.
- the emergency release unit 14 includes a rotatable about an axis 36 Lever 38, with one end 40 in a non-normal Operation of the electrical device by an operative connection with the end 34, the lock and release unit 12 can operate.
- An end 40 opposite the end 42 has a nose 44th on, which serves to attach one end of a tension spring 46.
- the other end of the tension spring 46 is on a mounting flange 48 attached, the according to Fig. 1a to 1d to a housing (not designated) of a thermally sensitive, thermal activatable actuator 50 is mounted.
- the mounting flange 48 may also be another fastener used, for example, on a frame for individual, several or all of the components shown in Fig. 1a to 1d is appropriate.
- the actuator 50 here comprises a wax motor due to its high coefficient of thermal expansion used becomes.
- the actuator 50 can be powered by supplying electrical or heated thermal energy, wherein the wax expands, around a displaceable member 52 connected thereto to move.
- the position of the displaceable member 52 can be made an operative connection with the lever 38, to the described below "emergency" release of the door lock 2 in a non-normal operating state of the electrical Device to allow.
- the door is open, why the locking block 10 is not engaged with the trap 8 is located. Accordingly, the door lock is 2 unlocked. Furthermore, there are the lock and release unit 12 in a release state and the emergency release unit 14 in a dormant state.
- the lever 22 by the spring 24 in the position held for the release position, whereby the lock and Release member 30 and in particular the locking surface 32 is positioned are that for closing and locking the door the locking block 10 inserted into the case 8 and the Gripping device 6 can be rotated.
- the emergency release unit 14 is the actuator 50 not activated, whereby the displaceable member 52 in the rest position shown in Fig. 1a is located.
- the tension spring 46 holds the lever 38 in the position shown there, the slidable member 52 and / or the end 34 as a stop for serve the lever 38.
- Such a stop can also by a separately executed stop element (not shown) is provided become.
- a contact thereof with the displaceable Link 52 and / or the end 34 in the in Fig. 1a shown position is not required, but first, how described below, by a movement of the lock and Release element 30 and / or the displaceable member 52nd produced.
- the lock and release unit 12 is activated to the door lock 2 to lock, more precisely, a rotation of the gripping device 6 to prevent. It is envisaged that the lock and Release unit 12 substantially immediately coincident with the locking of the door lock 2, after a predetermined Duration or depending on an operating condition of the electrical device is operated.
- the electromagnetic Actuator 16 activated. This will cause the magnetic plunger 18 moves in Fig. 1b to the left, whereby the lever 22 to the Axis 20 is rotated to the position shown there and in this held by the spring 24 and / or the magnetic plunger 18 becomes.
- the rotation of the lever 22 causes a displacement of the Sperrund Release element 30 to the right, causing the blocking surface 32 assumes a position, one for unlocking the door lock 2 required rotation of the gripping device 6 prevents.
- the blocking surface 32 assumes a position, one for unlocking the door lock 2 required rotation of the gripping device 6 prevents.
- smaller movements of the gripping device 6 still be possible, but with spins that are required for actual unlocking of the door lock 2 are necessary, through the blocking surface 32 are prevented.
- the actuator 50 substantially simultaneously with the electromagnetic actuator 16 or after a predetermined time delay activated, i. energized become.
- the actuator 50 before a Activation of the electromagnetic actuator 16 is activated is that before a shift of the lock and release element 30 displaced the sliding member 52 to the left becomes.
- the lever 38 may be that shown in Fig. 1b Working position before being actuated by the Take blocking and release unit 12.
- the power supply of the actuator 50 is interrupted. These Interruption of the power supply can be controlled, if by means not shown here an operating state is detected by the lock and release unit 12 to release the door lock 2 are no longer operated can. In case of power failure or lack of power for the electrical device is the interruption of the power supply for the actuator 50 automatically.
- a thermally sensitive element having actuator used at least in abnormal operating conditions of the electrical device, comparable to the tension spring 46, forces generated the lever 38 in the above described Turn way to the locking and releasing unit 12 in their To bring release state.
- a thermally sensitive element having actuator used, at least in abnormal operating conditions of the electrical device, comparable to the tension spring 46, forces generated the lever 38 in the above described Turn way to the locking and releasing unit 12 in their To bring release state.
- a thermally sensitive element having actuator used, at least in abnormal operating conditions of the electrical device, comparable to the tension spring 46, forces generated the lever 38 in the above described Turn way to the locking and releasing unit 12 in their To bring release state.
- a Actuator be arranged so that it is not normal Operating state of the electrical device for rotation of the lever 38 suitable forces in the end 42 can initiate.
- an actuator can be used which, comparable to the tension spring 46, cooperates with the end 42 and at a Interruption of the energy supply and the resulting Cool down the lever 38 clockwise (pulls).
- an actuator with a wax motor can be used here which, in contrast to the previously described Wax motor, with a supply of electrical or thermal Energy an actuator (comparable to the sliding Member 52) in a direction opposite to that described above Movement of the displaceable member 52 at a Activation of the actuator 50 moves ("pulls into the actuator"). Accordingly, a deactivation of this actuator, i.e. an interruption of the power supply, the actuator move in one direction, which is essentially the Direction of movement of the displaceable member 52 at a deactivation of the actuator 50 corresponds to ("a movement of the actuator ").
- an actuator can be used, the at a not normal operating condition of the electrical equipment pressure forces on the end 42 to rotate the lever 38.
- the actuator is for a non-normal operating state to power the electrical appliance, to the desired thermal expansion for rotation of the To reach levers 38.
- a power supply required which in such cases independent energy can provide.
- Such a power supply can, for example by a correspondingly dimensioned storage capacitor be provided during a normal Operation of the electrical device is charged.
- Release device used for the emergency release unit 14 become.
- Such a release device acts in dependence of parameters that reflect the current abnormal operating state characterize the electrical device, so with the emergency release unit 14 that a release of the Door lock 2 are prevented by the emergency release unit 14 can.
- the release device for example a lever or pin, which in such operating conditions a transition of emergency release unit 14 from her Working state mechanically prevented in its resting state.
- the release device in dependence of current non-normal operating state, the emergency release unit 14 by a corresponding activation in their working state or prevent it from activating.
- the emergency release unit 14 independent of a power supply can supply energy for the electrical device.
- Fig. 2a to 2d the mirrored in relation to the representations of Fig. 1a to 1d
- the components shown are those described above Components correspond with the same reference numerals Mistake.
- This embodiment is different from the above in that the emergency release device 14 is an actuating element 54, which via a hinge 56 with the End 40 is connected.
- a spring 60 generates one on the Actuator 54 counterclockwise rotating force and a compressive force acting in the plane of the drawing.
- the Compressive force can also be caused by an elastic deformation of the actuating element 54 and / or the lever 38 are provided.
- this embodiment comprises a slotted guide 62, for example, on a mounting frame for the Emergency release unit 14 is attached.
- the in Fig. 3 schematically Slotted guide 62 shown has an unspecified Recess on, which is a substantially horizontal extending guide channel 64 and an associated in the includes a substantially vertically extending guide channel 66, which merges into a curved guide channel 68, which additionally connects the guide channels 64 and 66.
- the curved guide channel 68 includes a slope 70, the starting from the plane of the guide channel 66 (slightly) rising to an edge 72 runs.
- An arranged in the recess The web 74 together with the edge 72 forms a boundary of the guide channel 64.
- the arrows shown in Fig. 3 give the directions of movement of the pin 58 in the slotted guide 62 during operation of the emergency release unit 14.
- the door lock 2 In the state shown in Fig. 2a, the door lock 2 is unlocked, wherein the lock and release unit 12 in the release state and the emergency release unit 14 are at rest.
- the pin 58 is located at the in Fig. 3rd I position.
- Fig. 2b shows a state in which the door lock 2 is locked is and the lock and release unit 12 in its locked state located.
- the transition the lock and release unit 12 in the locked state here no operation of the lever 38. Rather, here is the Lever 38 is rotated when the slidable member 52 due Activation of the actuator 50 moves to the right Has.
- a movement of the displaceable member 52 causes a rotation the lever 38 in a clockwise direction, wherein the pin 58 in the curved guide channel 68 starting from the position I in the direction given by the arrow P3 to the position II is moved (see Fig. 3).
- This movement becomes the pen 58 led from the slope 70 to the edge 72, behind the he due to the pressing force of the spring 60 to the level of the bottom surface of the guide channel 64 jumps.
- Is the Pin 58 at the position II shown in Fig. 3 is the emergency release unit 14 in their working state shown in Fig. 2c passed.
- the pin 58 Due to the boundary formed by the edge 72 and the web 74 of the guide channel 64, the pin 58 in this until led to position III. Is the pin 58 at the Position III, i. at the transition between the guide channel 64 and the guide channel 66, the spring 60 causes a rotation the actuating element counterclockwise and thus a movement in the direction of the arrow P2 to the position I. Thereafter, the emergency release unit 14 is in the in Fig. 2a illustrated idle state.
- An advantage of this embodiment is that when Lock the door lock 2 of the electromagnetic actuator 16 and / or spring 24 only the forces are to be generated for an actuation / movement of the lock and release unit 12 are required. Forces for a turn of the Lever 38 against the force of the tension spring 46 is needed in this case, will not be passed through the lock and release unit 12 provided. This may be in terms of interpretation the electromagnetic actuator 16 and / or the spring 24 be advantageous.
- Another advantage is that the emergency release unit 14 substantially independent of the lock and release unit 12 works. Consequently, this is also a reliable Locking the door lock 2 ensured when the emergency release unit 14 does not work properly, for example if due to a defect of the actuator 50, the working state is maintained.
- Fig. 4a-4f is the Function of the blocking and release element 30 of FIGS. 1 and 2 provided by a lock slider 80.
- Fig. 4a, 4b and 4f is the locking slide 80 in a release position in which a door lock not shown here can be unlocked.
- the locking slide 80 contactsed in the release order the locking slide 80 a stop 82, wherein one between the locking slide 80 and another Stop 84 arranged compression spring 86 the locking slide 80 secures in the release position.
- This backup function the compression spring 86 is here only one feature, since the Compression spring 86, as described below, also serves the locking slide 80 both in a normal operation as well as in an abnormal operation of an electric Apparatus using this embodiment a blocking position described in the following in the release position bring to.
- the locking slide 80 is by means of an actuator 88 of an electromagnetic actuator 90 Drainiebund actuated.
- the function of the electromagnetic actuator 90 corresponds essentially to the function of the electromagnetic Actuator 16 and is used to lock the lock 80 from the release position into a shown in Fig. 4d To bring locking position.
- a movable on an axis 92 and rotatably arranged pawl 94 acts on the top of the lock slider 80 arranged slotted guide 96 together.
- the Operation of the pawl 94 and the slide guide 96th will be described in more detail below with reference to FIG. 5 explained.
- the pawl 94 is connected to a tension spring 98, which exerts on the pawl 94 forces, the one end 100 of the pawl 94 in the direction of the slide guide 96th pulling the surface of the locking slide 80.
- the tension spring 98 is arranged so that their forces with respect to the axis 92, a rotation of the end 100 against the Clockwise (i.e., a rotation of the end 100 in the drawing plane of Fig. 4a-4f in the direction of the viewer).
- the emergency release unit includes in this embodiment, a thermally sensitive, thermally activatable actuator 102 having a Wax motor.
- the actuator 102 is a sliding Link 104 connected by contact with an angled here End 106 of the pawl 94 this in the in Fig. 4a shown position holds. This is the actuator 102 in the hibernation state described above and accordingly the displaceable member 104 has taken a rest position. To achieve this rest position, an actuator 102 and in particular a wax motor type used in a not activated state (i.e. missing or interrupted state) Energy supply) a movement of the displaceable member 104 effect in this position.
- the electromagnetic Actuator 90 is activated, causing the actuator 88 moves the locking slide 80 to the right.
- the actuator 88 moves the locking slide 80 to the right.
- the actuator 102 is activated, i. in his working condition is brought to the displaceable member 104 in the in Fig. 4b shown work position.
- the is needed to the displaceable member 104 in the working position to bring is the time of activation of the Actuator 102 relative to the activation time for the to select electromagnetic actuator 90.
- the electromagnetic actuator 90 has the locking slide 80 brought into the position shown in Fig. 4c, for example by the length of the actuator 88 and / or a stop not shown here can be defined the electromagnetic actuator 90 is deactivated again. Accordingly, the actuator 88 gives the lock slider 80 free, of the compression spring 86 to the left and moved to the blocking position shown in Fig. 4d. in this connection becomes the blocking position by an interaction of the end 100th retained the pawl 94 with the slide guide 96.
- the electromagnetic becomes Actuator 90 reactivated.
- the actuator 88 Moved in the episode the actuator 88, the locking slide 80 from the Locking position to the right in the position shown in Fig. 4e. Due to the slotted guide 96 used this position substantially the position shown in Fig. 4c.
- This movement of the locking slide 80 is required here for an active compound of the end 100 of the To reach pawl 94 and the slide guide 96, the for a transition of the locking slide 80 from the Locking position is required in the release position.
- the electromagnetic actuator 90 is deactivated and due to movement of the actuator 88 released to the right of the locking slide 80. is the locking slide 80 released, moves the compression spring 86 the locking slide 80 to the left, due to the embodiment of the slide guide 96, the pawl 94th assumes the position shown in Fig. 4f, the here for a Transition of the locking slide 80 in the release position is required.
- the actuator 102 becomes substantially deactivated at the same time or after a predetermined period of time.
- the actuator is used 102.
- This deactivation can be, for example in the event of a power failure, inherently out of the ordinary Operating condition arise or controlled, if For example, a faulty operation has occurred is required in which unlocking the door lock or is desired.
- the deactivation of the actuator 102 leads to a shift of the displaceable member 104 to the left. Pressed the slidable member 104 the end 106 of the pawl 94th so that these starting from the position shown in Fig. 4d is brought into the position shown in Fig. 4a.
- This position change the pawl 94 causes a release of the Locking slide 80 due to a lack of operative connection between the end 100 and the slide guide 96.
- the compression spring 86 moves the lock slider 80 in its release position, whereby the one shown in Fig. 4a State is reached. In this state is the door lock released and can be unlocked.
- Activation of the actuator 102 causes a movement of the end 100 to the position II, from which the end 100 along the arrow P1 due to a Activation of the electromagnetic actuator 90 and the thereof resulting movement of the locking slide 80 the Position III reached.
- the end 100 is at the position III, when the locking slide 80 in the in Fig. 4c position shown.
- the electromagnetic actuator 90 becomes the lock slider 80 by the compression spring 86 in the in Fig. 4d shown position shown in FIG. 5, a movement of the Slotted guide 96 has the right result. It moves the end 100 of the pawl 94 over an inclined surface 108 to position IV, where it defines a catch Surface 110 contacted. Due to the operative connection of the catch 110 with the end 100 of the locking slide 80 in the Lock position held.
- the electromagnetic Actuator 90 reactivated. This results in a Movement of the slide guide 96 of FIG. 5 to the left, wherein the tension spring 98 rotates the pawl 94 about the axis 92. As a result, the end 100 moves relative to the slotted guide along the arrow P3 to the position V.
- the following Deactivation of the electromagnetic actuator 90 gives the Locking slide 80 free, due to the pressure spring 86 generated force according to FIG. 5, a movement of the slotted guide 96 to the right result. This moves End 100 of the pawl 94 along the arrow P4 via a inclined surface 112 and a substantially horizontal Surface 114 up to an edge 116.
- the actuator 102 deactivated to the pawl 94th to press. Due to the electromagnetic actuator 90 caused locking of the door lock is located the end 100 of the pawl at position IV. The actuation the pawl 94 by the deactivated actuator 102nd causes a movement of the end 100 in the direction of the arrow P5 to position VI. Due to the movement of the locking slide 80 results under the action of force of the compression spring 86 a movement of the end 100 relative to the slotted guide in the direction of the arrow P6 up to position I.
- An advantage of the illustrated with reference to Fig. 4a-4f Embodiment is that to maintain the blocking state, i.e. the locking position of the locking slide 80 it is not necessary, the electromagnetic actuator 90 in an activated state and / or a device to use the function of the one described above bistable element 22 provides.
Description
- Fig. 1a-1d
- eine Ausführungsform der erfindungsgemäßen Vorrichtung,
- Fig. 2a-2d
- eine weitere Ausführungsform der erfindungsgemäßen Vorrichtung,
- Fig. 3
- eine schematische Darstellung einer bei der Ausführungsform von Fig. 2a-2d verwendeten Kulissenführung,
- Fig. 4a-4f
- eine weitere Ausführungsform der erfindungsgemäßen Vorrichtung, und
- Fig. 5
- eine perspektivische Ansicht einer bei der Ausführungsform von Fig. 4a-4f verwendeten Kulissenführung.
Claims (13)
- Vorrichtung zum Sperren und Freigeben eines Türschlosses eines elektrischen Gerätes, mit:einer Sperr- und Freigabeeinheit (12), die in einem Sperrzustand ein verriegeltes Türschloß (2) eines elektrischen Gerätes sperrt und in einem Freigabezustand ein Entriegeln des Türschlosses ermöglicht, undeiner Notfreigabeeinheit (14), die in einem nicht normalen Betriebszustand des elektrischen Gerätes die Sperr- und Freigabeeinheit (12) in den Freigabezustand bringt,die Notfreigabeeinheit (14) einen Ruhezustand und einen Arbeitszustand aufweist, unddie Notfreigabeeinheit (14) einen Aktuator (50), um einen Übergang in den Arbeitszustand zu bewirken, und ein krafterzeugendes Element (46) umfaßt, um einen Übergang in den Ruhezustand zu bewirken, oderdie Notfreigabeeinheit (14) einen Aktuator (50), um einen Übergang in den Ruhezustand zu bewirken, und ein krafterzeugendes Element (46) umfaßt, um einen Übergang in den Arbeitszustand zu bewirken.
- Vorrichtung gemäß Anspruch 1, dadurch gekennzeichnet, daß:die Sperr- und Freigabeeinheit (12) den Sperrzustand mittels einer Wirkverbindung mit dem Türschloß (2) in Antwort auf dessen Verriegelung einnimmt, oderdie Sperr- und Freigabeeinheit (12) bei einem verriegelten Zustand des Türschlosses (2) den Sperrzustand gesteuert einnimmt.
- Vorrichtung gemäß Anspruch 1 oder 2, dadurch gekennzeichnet, daß:die Sperr- und Freigabeeinheit (12) den Freigabezustand bei einem Betriebszustand des elektrischen Gerätes einnimmt, für den eine Entriegelung des Türschlosses (2) gewünscht und/oder zulässig ist.
- Vorrichtung gemäß einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß:die Sperr- und Freigabeeinheit (12) einen elektromagnetischen Aktuator (16) für einen Übergang aus dem Sperrzustand in den Freigabezustand umfaßt.
- Vorrichtung gemäß Anspruch 4, dadurch gekennzeichnet, daß:der elektromagnetische Aktuator (16) ausgelegt ist, einen Übergang aus dem Freigabezustand in den Sperrzustand zu bewirken.
- Vorrichtung gemäß einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß:die Notfreigabeeinheit (14) bei einem Übergang aus dem Arbeitszustand in den Ruhezustand die Sperr- und Freigabeeinheit (12) in den Freigabezustand bringt.
- Vorrichtung gemäß einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß:die Notfreigabeeinheit (14) mittels einer Wirkverbindung mit der Sperr- und Freigabeeinheit (12) in Antwort auf deren Übergang in den Sperrzustand den Arbeitszustand einnimmt.
- Vorrichtung gemäß einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß:die Notfreigabeeinheit (14) den Arbeitszustand gesteuert einnimmt, wenn sich die Sperr- und Freigabeeinheit (12) in dem Sperrzustand befindet oder bevor die Sperr- und Freigabeeinheit (12) den Sperrzustand einnimmt.
- Vorrichtung gemäß einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß:die Notfreigabeeinheit (14) bei einem normalen Betrieb des elektrischen Gerätes in Antwort auf einen Übergang der Sperr- und Freigabeeinheit (12) aus dem Sperrzustand in den Freigabezustand ihren Ruhezustand einnimmt.
- Vorrichtung gemäß einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, daß:das krafterzeugende Element (46) eine Feder ist. - Vorrichtung gemäß einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, daß:der Aktuator (50) ein thermisch empfindliches Element, ein Thermoelement oder einen Wachsmotor umfaßt. - Vorrichtung gemäß einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, daß:die Notfreigabeeinheit (14) eine Energiezufuhreinrichtung für den Aktuator (50) umfaßt, die ausgelegt ist, bei einem nicht normalen Betrieb des elektrischen Gerätes zum Aktivieren des Aktuators (50) diesem Energie zuzuführen. - Vorrichtung gemäß einem der Ansprüche 6 bis 12, gekennzeichnet durch:eine Freigabeeinrichtung für die Notfreigabeeinheit (14), die in Abhängigkeit von Parametern, die einen nicht normalen Betriebszustand des elektrischen Gerätes charakterisieren, einen Übergang der Notfreigabeeinheit (14) in den Ruhezustand zuläßt.
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE50009661T DE50009661D1 (de) | 2000-12-22 | 2000-12-22 | Vorrichtung zum Sperren und Freigeben eines Türschlosses eines elektrischen Gerätes |
EP00128370A EP1217117B1 (de) | 2000-12-22 | 2000-12-22 | Vorrichtung zum Sperren und Freigeben eines Türschlosses eines elektrischen Gerätes |
US10/016,526 US6840553B2 (en) | 2000-12-22 | 2001-12-10 | Apparatus for blocking and releasing a door lock of an electrical appliance |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP00128370A EP1217117B1 (de) | 2000-12-22 | 2000-12-22 | Vorrichtung zum Sperren und Freigeben eines Türschlosses eines elektrischen Gerätes |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1217117A1 EP1217117A1 (de) | 2002-06-26 |
EP1217117B1 true EP1217117B1 (de) | 2005-03-02 |
Family
ID=8170795
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP00128370A Expired - Lifetime EP1217117B1 (de) | 2000-12-22 | 2000-12-22 | Vorrichtung zum Sperren und Freigeben eines Türschlosses eines elektrischen Gerätes |
Country Status (3)
Country | Link |
---|---|
US (1) | US6840553B2 (de) |
EP (1) | EP1217117B1 (de) |
DE (1) | DE50009661D1 (de) |
Families Citing this family (23)
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US7089948B2 (en) * | 2002-05-03 | 2006-08-15 | Whirlpool Corporation | In-sink dishwasher with integrated latch |
ITTO20021112A1 (it) * | 2002-12-23 | 2004-06-24 | Bitron Spa | Dispositivo blocca-porta, particolarmente per elettrodomestici. |
DE10312305B4 (de) * | 2003-03-19 | 2006-09-21 | Miele & Cie. Kg | Türverriegelung für elektrische Geräte, insbesondere für Waschmaschinen |
JP4084694B2 (ja) * | 2003-04-22 | 2008-04-30 | シャープ株式会社 | 洗濯機 |
US7900979B2 (en) * | 2003-06-27 | 2011-03-08 | Illinois Tool Works, Inc. | Low power consumption lock for appliance latch |
ES2293388T3 (es) * | 2003-11-14 | 2008-03-16 | Bsh Bosch Und Siemens Hausgerate Gmbh | Electrodomestico provisto de una seguridad para niños. |
US6940373B2 (en) * | 2003-11-21 | 2005-09-06 | Ark-Les Corporation | Fast engage, slow release electrical actuator |
US7306266B2 (en) | 2004-03-05 | 2007-12-11 | Illinois Tool Works, Inc. | Appliance latch having a rotating latch hook mounted on a linear slide |
DE602004004099T2 (de) * | 2004-07-13 | 2007-08-09 | C.R.F. S.C.P.A. | Maschine zum Waschen und/oder Trocknen von Wäsche, mit einer elektrisch betätigbaren Verriegelungs-/Entriegelungsvorrichtung der Tür |
US8215135B2 (en) * | 2007-04-20 | 2012-07-10 | Illinois Tool Works, Inc. | Appliance latch with power failure unlock |
ITTO20070476A1 (it) * | 2007-06-29 | 2008-12-30 | Itw Metalflex Druzba Za Proizv | Dispositivo elettromagnetico di bloccaggio per una porta di un elettrodomestico, in particolare un oblo' di una lavatrice |
ITTO20070501A1 (it) * | 2007-07-10 | 2009-01-11 | Indesit Co Spa | Dispositivo e metodo per bloccare e sbloccare la porta di un elettrodomestico |
WO2009061628A1 (en) * | 2007-11-06 | 2009-05-14 | Illinois Tool Works Inc. | Appliance latch with compact form factor |
US8152208B2 (en) * | 2009-04-21 | 2012-04-10 | Cosco Management, Inc. | Panel lock |
US9273425B2 (en) * | 2010-04-05 | 2016-03-01 | Lg Electronics Inc. | Apparatus for treating laundry and method for controlling the same |
IT1399631B1 (it) * | 2010-04-21 | 2013-04-26 | Elettrotecnica Rold Srl | Dispositivo di chiusura "push-pull" |
DE102012203484A1 (de) * | 2012-03-06 | 2013-09-12 | BSH Bosch und Siemens Hausgeräte GmbH | Haushaltsgerät |
GB2527735B (en) * | 2014-05-04 | 2020-10-28 | The Haigh Eng Company Ltd | Lid interlock apparatus |
US9779597B2 (en) * | 2014-07-10 | 2017-10-03 | Nova Products, Inc. | Method of operating a security system with deterrent capability for intimidation and neutralization |
CZ28601U1 (cs) * | 2015-05-14 | 2015-09-07 | Alliance Laundry Ce S.R.O. | Bezpečnostní zařízení pro detekci zajištění dveří pracího bubnu pračky |
EP3364847B1 (de) | 2015-10-21 | 2021-07-21 | Illinois Tool Works Inc. | Leerlaufsystem und -verfahren für spülmaschine |
DE102017006642B4 (de) * | 2017-07-13 | 2022-07-07 | Emz-Hanauer Gmbh & Co. Kgaa | Überhub-Türverschluss mit Verriegelungsmechanismus |
DE102019211281A1 (de) * | 2019-07-30 | 2021-02-04 | BSH Hausgeräte GmbH | System zum Betrieb einer Riegelvorrichtung |
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DE2628597C3 (de) * | 1976-06-25 | 1979-07-19 | Ellenberger & Poensgen Gmbh, 8503 Altdorf | Verriegelungsvorrichtung für Türen u.dgl. an elektrisch betriebenen Geräten |
US4074545A (en) * | 1976-08-26 | 1978-02-21 | Franklin Manufacturing Company | Bimetal lid lock |
US4109637A (en) * | 1977-01-06 | 1978-08-29 | Les Industries Bfg Limitee | Latch mechanism for pyrolytic range |
US4286811A (en) * | 1978-03-15 | 1981-09-01 | Schantz Spencer C | Bimetal actuated locking device |
IT1136453B (it) * | 1980-07-24 | 1986-08-27 | Zanussi Grandi Impianti Spa | Dispositivo di sicurezza per l'appertura della porta di macchine lavatrici o simili,in particolare del tipo industriale |
US4351288A (en) * | 1981-06-17 | 1982-09-28 | White Consolidated Industries, Inc. | Oven door latch |
JPS5829754U (ja) * | 1981-08-21 | 1983-02-26 | 日立金属株式会社 | ドアロツク用アクチユエ−タ |
US4718705A (en) * | 1986-08-25 | 1988-01-12 | White Consolidated Industries, Inc. | Bimetal actuated lock |
SE461989B (sv) * | 1988-09-16 | 1990-04-23 | Electrolux Ab | Laasanordning foer en lucka till en tvaettmaskin, centrifug e d |
FR2639096B1 (fr) * | 1988-11-17 | 1991-01-04 | Bourgeois Ste Coop Production | Fermeture pour four |
US4917414A (en) * | 1988-12-23 | 1990-04-17 | Texas Instruments Incorporated | Interlock arrangement for an appliance door and an interlock unit therefor |
US5241292A (en) * | 1992-05-28 | 1993-08-31 | Prime Mover, Inc. | Three position electrically operated actuator |
US5520424A (en) * | 1995-01-30 | 1996-05-28 | U.S. Controls Copr. | Tamper-proof door switch and latch device |
DE19601228C5 (de) | 1996-01-15 | 2007-08-16 | Emz-Hanauer Gmbh & Co. Kgaa | Vorrichtung zum Verriegeln der Tür einer Wasch- oder Spülmaschine |
US5879036A (en) * | 1996-09-19 | 1999-03-09 | Moline; Steven S. | Door interlock for an appliance such as a washer |
US5823017A (en) * | 1996-12-10 | 1998-10-20 | U.S. Controls Corporation | Rapid release washing machine lid lock |
US6036241A (en) * | 1998-03-11 | 2000-03-14 | Maytag Corporation | Locking mechanism for an appliance door |
ITTO980511A1 (it) | 1998-06-11 | 1999-12-13 | Bitron Spa | Dispositivo di bloccaggio di un portello di un apparecchio elettrodome stico. |
-
2000
- 2000-12-22 DE DE50009661T patent/DE50009661D1/de not_active Expired - Lifetime
- 2000-12-22 EP EP00128370A patent/EP1217117B1/de not_active Expired - Lifetime
-
2001
- 2001-12-10 US US10/016,526 patent/US6840553B2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
DE50009661D1 (de) | 2005-04-07 |
US6840553B2 (en) | 2005-01-11 |
EP1217117A1 (de) | 2002-06-26 |
US20020101313A1 (en) | 2002-08-01 |
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