EP0999326B1 - Locking device, for example for domestic appliances - Google Patents

Locking device, for example for domestic appliances Download PDF

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Publication number
EP0999326B1
EP0999326B1 EP19990121728 EP99121728A EP0999326B1 EP 0999326 B1 EP0999326 B1 EP 0999326B1 EP 19990121728 EP19990121728 EP 19990121728 EP 99121728 A EP99121728 A EP 99121728A EP 0999326 B1 EP0999326 B1 EP 0999326B1
Authority
EP
European Patent Office
Prior art keywords
locking
housing
locking device
drive
locking member
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
Application number
EP19990121728
Other languages
German (de)
French (fr)
Other versions
EP0999326A2 (en
EP0999326A3 (en
Inventor
Helmut Dr. Baader
Hubert Harrer
Günther Hengelein
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.)
Ellenberger and Poensgen GmbH
Original Assignee
Ellenberger and Poensgen GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from DE19852578A external-priority patent/DE19852578C5/en
Application filed by Ellenberger and Poensgen GmbH filed Critical Ellenberger and Poensgen GmbH
Publication of EP0999326A2 publication Critical patent/EP0999326A2/en
Publication of EP0999326A3 publication Critical patent/EP0999326A3/en
Application granted granted Critical
Publication of EP0999326B1 publication Critical patent/EP0999326B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • EFIXED CONSTRUCTIONS
    • E05LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05BLOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B47/00Operating or controlling locks or other fastening devices by electric or magnetic means
    • E05B47/0001Operating or controlling locks or other fastening devices by electric or magnetic means with electric actuators; Constructional features thereof
    • E05B47/0009Operating 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
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06FLAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F37/00Details specific to washing machines covered by groups D06F21/00 - D06F25/00
    • D06F37/42Safety arrangements, e.g. for stopping rotation of the receptacle upon opening of the casing door
    • EFIXED CONSTRUCTIONS
    • E05LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05BLOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B15/00Other details of locks; Parts for engagement by bolts of fastening devices
    • E05B15/04Spring arrangements in locks
    • E05B2015/0493Overcenter springs
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S292/00Closure fasteners
    • Y10S292/66Thermally controlled mechanism
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T292/00Closure fasteners
    • Y10T292/68Keepers
    • Y10T292/696With movable dog, catch or striker
    • Y10T292/699Motor controlled

Definitions

  • the invention relates to a locking device for locking the door Household appliance, in particular a household appliance operated at high temperature, with a through a bimetallic drive between an opening and a Closed position and vice versa movable locking member according to the preamble of claim 1.
  • Bimetal controlled locking devices for domestic appliance doors are for example known from DE 37 09 660 C2 and EP 0 347 592 A1. With these Locking devices is as a drive for the hand-operated locking member in the locking position locking slide a bimetallic Snap disc provided. This bimetallic snap disc ensures on the one hand when heating up for a sudden blocking of the closure the gate valve. After such a block, the Heating current for the bimetallic snap disc. This jumps due to its cooling back to its open position.
  • FR 1 581 402 A is a locking device for locking a motor vehicle door with an adjustable between two positions by means of two bimetals Actuator known.
  • a tilting mechanism acts on the actuator, that keeps the actuator bistable in both positions and that the actuator moves to the other position as soon as it through one of the bimetals from the previous position over a dead center is driven.
  • DE 196 01 228 C2 describes a sealing device for the door a washing machine or dishwasher is known in which a locking body between a closed position and an open position is adjustable.
  • the locking device has a bistable adjustable by a magnetic drive Element that locks the locking body in a first position and releases in a second position.
  • Locking device simple and therefore economical to manufacture. she should be able to be realized in a space-saving manner, also with the freedom of design for the Do not restrict device design. After all, their operation should save energy and environmentally friendly, e.g. be quiet.
  • the bimetallic Drives directly control the locking and unlocking movements and not just the mobility of the locking member in the closed position locking gate valve. Energy consumption only falls during the Switching process on and there only to cope with the first part of the Locking or unlocking movement until the dead position is exceeded of the toggle. After that, the toggle not only takes over second part or the completion of the displacement movement or the switching process but also preferably switches off the electric bimetal heating. The functional system is therefore from the dead point of the toggle mechanism is de-energized and the locking or unlocking position is still stable. Both the locking movement and also controlled the unlocking movement. The final state reached, that is Locking and unlocking positions are stable. It is a matter of an overall bistable system.
  • the coupling bridge and locking slide encapsulate the toggle mechanism between them, which is also shielded from the bimetal drive. Carry out all movements of the functional parts of the locking device itself in the longitudinal plane of the housing. This also makes it easier to install Construction.
  • a locking slide 2 in the transverse direction 3 between its unlocked position (Fig. 2) and a locking position (Fig. 3) mounted longitudinally. He assigns the Outline shape of a T standing on its head and stands with both of them Horizontal ends 4,5 of the T-transom as well as with the free vertical end 6 of the T-longitudinal beam through housing openings 7 in the side walls of the Lower housing part 1 to the outside.
  • the ends 4-6 are the drive ends of the locking slide 2, for locking purposes with door-side locking elements 8 immediately (Fig. 5,6) or via intermediate Transmission elements 9 e.g. act indirectly in the form of a swivel lever.
  • the Locking elements 8 are e.g. Part of an appliance door to be locked.
  • Bimetals 10,11 Approximately perpendicular to the transverse direction 3 there are two within the lower part 1 of the device Bimetals 10,11 arranged. They are designed like stripes.
  • the stripe plane runs at right angles to the plane of the drawing of FIGS. 1-4.
  • the stripe levels run parallel to each other and keep a certain lateral distance between them on.
  • the bimetals are fixed on the housing side with their foot ends 12, 13. There are they are firmly welded to the contact tongues 14, 15, which are in slots 16 inside the housing side wall 17 lie fixed and with their contact ends from the Protect the interior of the housing from the outside (Fig. 2,3).
  • the bimetals 10, 11 engage with their movement ends 18, 19 in the transverse direction 9 sliding locking slide 2 indirectly. This is indirectness however only to the extent that between the ends of the movement 18, 19 the Bimetals 10, 11 and the actual locking slide 2 a coupling bridge 20 is interposed, which, however, by its positive engagement 21 in the locking slide 2 and by their drive-like interaction and their parallel position to the locking slide 2 functionally as part of Locking slide 2 can be seen.
  • the two-part design of coupling bridge 20 and locking slide 2 has i.a. manufacturing or assembly reasons.
  • the two bimetals 10, 11 form together with the locking slide 2 or its coupling bridge 20, so to speak, the two vertical legs and the saddled horizontal leg of one of the Greek Letters ⁇ corresponding overall structure.
  • the locking slide is 2 or the coupling bridge 20 to the movement ends 18, 19 of the two bimetals 10.11.
  • the two bimetals 10, 11 thus act like the two pillars of a bridge head as supporting parts for the coupling bridge 20, the longitudinal guidance of the housing base 22 and the housing cover 23 as Side guides is effected when the housing is in its final assembly state located.
  • This mounting or mounting of the coupling bridge 20 is special low-friction and therefore also energy-saving.
  • the bimetals 10.11 stand with their movement ends 18, 19 in recesses 24 on the side facing them Flank of the coupling bridge 20 into it.
  • the recesses 24 have the Function of a cutting edge bearing (Fig. 4). They also form through their transverse walls a shift lock for the movement ends 18, 19 of the bimetals 10.11.
  • the coupling bridge 20 therefore hovers freely on the bimetal ends 18, 19 and is guided by the bimetals 10, 11 alone. No one is needed additional guidance of the displacement movement of the coupling bridge 20 within of the housing 1, although such guidance through the housing base 22nd or the housing cover 23 should not be excluded.
  • the coupling bridge 20 is practically attached to the ends of the bimetals 10, 11.
  • the coupling bridge 20 is connected to the locking slide 2 by a loose positive engagement 21. This transmits the drive movement the bimetals 10, 11 on the locking slide 2, but without on the locking slide acting bearing pressures on the coupling bridge 20 and thereby indirectly to the bimetals 10, 11 and thereby approximately their functionality to influence or impair.
  • the coupling bridge 20 is between the two recesses 24 for the ends of the movement 18.19 of the bimetals 10.11 or between their pins for one Positive engagement 21 on the locking slide 2 on the locking slide 2 facing side hollowed out (trough 25).
  • the locking slide 2 contains on the coupling bridge 20 side with the trough 25 corresponding counter trough 26.
  • the troughs 25, 26 enclose a cavity, in which a housing projection 27 protrudes from the housing base 22.
  • the housing projection 27 forms the housing-side support of the tilt spring 28, the bottom 29 of the trough 25 of the coupling bridge with its lower end 20 acted upon.
  • the toggle spring 28 forms the energy store of a toggle mechanism, which 2 and 3 is shown in its two tilt positions, on the one hand the locking position (Fig. 3) and on the other hand the unlocking position (Fig. 2) form.
  • the rocker spring 22 acts on the coupling bridge 20 in the transverse direction 3 such that their ends either on the left side wall 32 (Fig. 3) in the locked position or on the right housing wall 33 (Fig. 2) in the unlocked position.
  • This housing system causes a voltage-independent positional stability of the coupling bridge 20 or the Locking slide 2 in the locked position (Fig.
  • the housing projection 27 is also part of the housing side Longitudinal guide for the locking slide 2, as that of FIGS. 1-3 is clearly recognizable.
  • the toggle spring 28 holds the coupling bridge 20 in all positions securely on the movement ends 18, 19 of the bimetals 10.11.
  • the coupling bridge 20 is supported on the drive ends 18, 19 without any friction of bimetals 10.11. This edition is stabilized by that between the two Drive ends 18, 19 from above acting on the coupling bridge 20 rocker spring 28.
  • the guidance of the locking slide 2 or the coupling bridge 20 within of the housing 1 can otherwise be accomplished through the housing walls be also the end stops for the mutual sliding movements form.
  • the active sides of the thermal bimetals 10, 11 face one another (Fig. 4). They are heated by PTC resistors 34, 35.
  • the PTC's 34.35 are connected to voltage via the contact tongues 14a and 39 or 15a and 39. 2, the contacts 14a, 39 on When voltage is applied, the PTC resistor 34 heats up and the bimetal 10 swings out with its end of movement 18 counterclockwise. This Swiveling movement becomes very low-friction via the coupling bridge 20 onto the locking slide 2 transferred to the locking in the transverse direction 3 after is moved to the left.
  • the movement distance up to the stop of the coupling bridge 20 on the housing side wall 32 is divided into two sections of approximately the same length.
  • the warming of the PTC's 34 caused by the deflection of the bimetal 10 pivot drive required in this movement section also causes the compression of the rocker spring 28 until whose longitudinal axis has reached the dead center, in which it is approximately perpendicular to the transverse direction 3, that is oriented vertically with reference to FIGS. 2 and 3.
  • By walking through the dead center expands the rocker spring 28 and thereby takes over further displacement drive for the coupling bridge 20 or for the locking slide 2 regardless of the heating of the PTC's 34.
  • the control of the signal contacts 42 of a signal device is also carried out by the coupling bridge 20 accomplished. Depending on their position, therefore, from the outside the system status can be recognized at any point.
  • the advantage of the locking device is the extremely small dimensions the unit.
  • a stroke of, for example, 3 mm of the locking slide 2 is sufficient to lock the mechanics.
  • the bistability of the two positions (Locking and unlocking position) is guaranteed.
  • the current one Position of the locking slide 3 is independent of any power failures and it remains.
  • the drive remains in its starting position, if a voltage failure occurs during the switching process.
  • Voltage is only present during the switching processes for locking and unlocking Bimetal or at the PTC.
  • the bimetals and PTC's are only slightly thermally stressed, so that they ensure a long service life.
  • the system works silent in contrast to a magnetic drive.
  • the system unlocks automatically when connected to voltage.
  • the energy requirement is very low. He is approx. 1 A over max. 2 sec at 230 V. Also lower voltages than the nominal voltage 230 V are sufficient for full functionality without any problems. It does not apply in other systems, e.g. Linkage necessary for a motor drive, because the locking

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Thermally Actuated Switches (AREA)

Description

Die Erfindung betrifft eine Verriegelungsvorrichtung zum Verriegeln der Tür eines Hausgeräts, insbesondere eines bei hoher Temperatur betriebenen Hausgeräts, mit einem durch einen bimetallischen Antrieb zwischen einer Öffnungs- und einer Schließstellung und umgekehrt bewegbaren Verriegelungsglied nach dem Oberbegriff des Anspruchs 1.The invention relates to a locking device for locking the door Household appliance, in particular a household appliance operated at high temperature, with a through a bimetallic drive between an opening and a Closed position and vice versa movable locking member according to the preamble of claim 1.

Bimetallgesteuerte Verriegelungsvorrichtungen für Hausgerätetüren sind beispielsweise aus der DE 37 09 660 C2 und der EP 0 347 592 A1 bekannt. Bei diesen Verriegelungsvorrichtungen ist als Antrieb für einen das handbetätigbare Verriegelungsglied in Verriegelungsstellung sperrenden Sperrschieber eine bimetallische Schnappscheibe vorgesehen. Diese bimetallische Schnappscheibe sorgt einerseits bei Aufheizung für eine sprungartige Sperrung des Verschlusses durch den Sperrschieber. Nach einer solchen Sperrung erfolgt eine Abschaltung des Heizstromes für die Bimetall-Schnappscheibe. Diese springt infolge ihrer Erkaltung wieder in ihre Öffnungsstellung zurück.Bimetal controlled locking devices for domestic appliance doors are for example known from DE 37 09 660 C2 and EP 0 347 592 A1. With these Locking devices is as a drive for the hand-operated locking member in the locking position locking slide a bimetallic Snap disc provided. This bimetallic snap disc ensures on the one hand when heating up for a sudden blocking of the closure the gate valve. After such a block, the Heating current for the bimetallic snap disc. This jumps due to its cooling back to its open position.

Zum Verriegeln einer Kraftfahrzeugtür ist aus der FR 1 581 402 A eine Verriegelungsvorrichtung mit einem mittels zweier Bimetalle zwischen zwei Stellungen verstellbaren Betätigungsglied bekannt. Auf das Betätigungsglied wirkt ein Kippsprungwerk, das das Betätigungsglied bistabil in beiden Stellungen hält und das das Betätigungsglied in die jeweils andere Stellung weiter bewegt, sobald es durch eines der Bimetalle aus der bisherigen Stellung über einen Totpunkt hinweg angetrieben wird.FR 1 581 402 A is a locking device for locking a motor vehicle door with an adjustable between two positions by means of two bimetals Actuator known. A tilting mechanism acts on the actuator, that keeps the actuator bistable in both positions and that the actuator moves to the other position as soon as it through one of the bimetals from the previous position over a dead center is driven.

Ferner ist aus der DE 196 01 228 C2 eine Veffiegelungsvorrichtung für die Tür einer Wasch- oder Spülmaschine bekannt, bei der ein Verriegelungskörper zwischen einer Schließstellung und einer Offenstellung verstellbar ist. Die Verriegelungsvorrichtung weist ein durch einen magnetischen Antrieb verstellbares bistabiles Element auf, das den Verriegelungskörper in einer ersten Stellung verriegelt und in einer zweiten Stellung freigibt.Furthermore, DE 196 01 228 C2 describes a sealing device for the door a washing machine or dishwasher is known in which a locking body between a closed position and an open position is adjustable. The locking device has a bistable adjustable by a magnetic drive Element that locks the locking body in a first position and releases in a second position.

Vorliegend geht es darum, mit einfachen Mitteln sicherzustellen, dass eine einmal verriegelte Tür auch bei Spannungsunterbrechung oder Spannungsausfall nicht zu öffnen ist. Das ist besonders wichtig bei mit sehr hohen Temperaturen arbeitenden Hausgeräten. Dort muss die Verriegelung bis zu einer Abkühlung auf ungefährliche Temperaturen aufrecht erhalten bleiben, auch wenn die Stromversorgung ausfällt.This is about using simple means to ensure that one time the door is not locked even in the event of a power failure or power failure can be opened. This is particularly important for those working at very high temperatures Household appliances. There, the lock must cool down to harmless Temperatures are maintained even when the power supply fails.

Neben den hohen Sicherheitsanforderungen ist es eine besondere Aufgabe, die Verriegelungsvorrichtung einfach und dadurch kostensparend herzustellen. Sie soll raumsparend realisierbar sein, auch um den Gestaltungsspielraum für das Gerätedesign nicht einzuschränken. Schließlich soll ihr Betrieb energiesparend und umweltfreundlich, z.B. geräuscharm sein.In addition to the high security requirements, it is a special task that Locking device simple and therefore economical to manufacture. she should be able to be realized in a space-saving manner, also with the freedom of design for the Do not restrict device design. After all, their operation should save energy and environmentally friendly, e.g. be quiet.

Diese Aufgaben werden durch Anspruch 1 gelöst bzw. erleichtert. Die bimetallischen Antriebe steuern direkt die Verriegelungs- und die Entriegelungsbewegung und nicht nur einen die Beweglichkeit des Verriegelungsgliedes in Verschlussstellung sperrenden Sperrschieber. Ein Energieverbrauch fällt nur während des Umschaltvorganges an und dort auch nur zur Bewältigung des ersten Teils der Verriegelungs- oder der Entriegelungsbewegung bis zur Überschreitung der Totlage des Kippsprungwerkes. Danach übernimmt das Kippsprungwerk nicht nur den zweiten Teil bzw. die Vollendung der Verschiebebewegung bzw. des Umschaltvorganges sondern bevorzugt auch die Abschaltung der elektrischen Bimetallbeheizung. Das Funktionssystem ist also ab Überschreitung der Totlage des Kippsprungwerkes stromlos und die Verriegelungs- bzw. Entriegelungsposition ist trotzdem stabil. Bevorzugt sind derart sowohl die Verriegelungsbewegung als auch die Entriegelungsbewegung gesteuert. Der erreichte Endzustand, also die Verriegelungs- und die Entriegelungsstellung sind lagestabil. Es handelt sich um ein bistabiles Gesamtsystem. These tasks are solved or facilitated by claim 1. The bimetallic Drives directly control the locking and unlocking movements and not just the mobility of the locking member in the closed position locking gate valve. Energy consumption only falls during the Switching process on and there only to cope with the first part of the Locking or unlocking movement until the dead position is exceeded of the toggle. After that, the toggle not only takes over second part or the completion of the displacement movement or the switching process but also preferably switches off the electric bimetal heating. The functional system is therefore from the dead point of the toggle mechanism is de-energized and the locking or unlocking position is still stable. Both the locking movement and also controlled the unlocking movement. The final state reached, that is Locking and unlocking positions are stable. It is a matter of an overall bistable system.

Ein weiterer, besonderer Vorteil liegt in der konstruktiv einfachen und vor allen Dingen sehr raumsparenden Bauweise, wie sie insbesondere dadurch erreicht wird, dass die beiden Bimetalle mit dem ihre Enden querenden Verriegelungsschieber und/oder der Koppelbrücke ein Figurengebilde ähnlich dem griechischen Buchstaben Π bilden, welches in der Bewegungsebene des Gehäuses einliegt. Die schneidenlagerartige Lagerung der Koppelbrücke auf den Bewegungsenden der Bimetalle ermöglicht einen besonders reibungsarmen Antrieb des Verriegelungsschiebers, auf welchen die Bimetalle praktisch direkt einwirken. Dass der Verriegelungsschieber bei der bevorzugten Ausführungsform durch sein Aufsatteln auf ein parallel zu ihm angeordnetes, antriebsmäßig gleichwirkendes Antriebsglied zweiteilig ausgebildet ist, hat einerseits fertigungs- bzw. montagetechnische Gründe. Beide Teile könnten funktionstechnisch auch zu einem einstückigen Verriegelungsschieber miteinander verbunden sein. Andererseits bewirkt diese zweiteilige Ausbildung eine schwebende Halterung und Lagerung des als Koppelbrücke ausgebildeten Antriebsgliedes an den Enden der Bimetalle, ohne dass auf den Verriegelungsschieber einwirkende Lagerkräfte auf die Koppelbrücke und damit die Bimetalle einwirken und die schwebende Lagerung der Koppelbrücke beeinträchtigen, die durch den Energiespeicher des Kippsprungwerkes in ihrer Anlage an den Bimetallenden gehalten wird.Another particular advantage lies in the structurally simple and above all Things very space-saving design, as achieved in particular by it is that the two bimetals with the locking slide crossing their ends and / or the coupling bridge a figure structure similar to the Greek Form the letter Π, which lies in the plane of movement of the housing. The cutting-edge-like mounting of the coupling bridge on the movement ends the bimetal enables a particularly low-friction drive of the locking slide, on which the bimetals act practically directly. That the Locking slide in the preferred embodiment by its saddling to a drive element arranged in parallel with it and having the same drive is formed in two parts, on the one hand has manufacturing or assembly technology Reasons. Functionally, both parts could also be made in one piece Locking slide must be connected to each other. On the other hand, it does two-part training a floating bracket and storage as a coupling bridge trained drive member at the ends of the bimetals without bearing forces acting on the locking slide on the coupling bridge and so that the bimetals act and the floating bearing of the coupling bridge affect by the energy storage of the Kippsprungwerkes in their Plant is held on the bimetal ends.

Weiter kapseln Koppelbrücke und Verriegelungsschieber zwischen sich das Kippsprungwerk, welches dadurch auch von dem Bimetallantrieb abgeschirmt ist. Sämtliche Bewegungen der Funktionsteile der Verriegelungsvorrichtung vollziehen sich in der Gehäuselängsebene. Das erleichtert auch einen montagefreundlichen Aufbau.Furthermore, the coupling bridge and locking slide encapsulate the toggle mechanism between them, which is also shielded from the bimetal drive. Carry out all movements of the functional parts of the locking device itself in the longitudinal plane of the housing. This also makes it easier to install Construction.

Der Gegenstand der Erfindung wird anhand von in den Figuren dargestellten Ausführungsbeispielen näher erläutert. Es zeigen:

Fig. 1
die Verriegelungsvorrichtung mit ihren sämtlichen funktionswesentlichen Einzelteilen in Explosionsdarstellung
Fig. 2
eine Draufsicht auf das Gehäuseunterteil mit einliegend sämtlichen wesentlichen Funktionsteilen der Verriegelungsvorrichtung in Entriegelungsstellung des Verriegelungsschiebers.
Fig. 3
eine Darstellung analog Fig. 2 mit in Verriegelungsstellung befindlichem Verriegelungsschieber.
Fig. 4
eine Darstellung der antriebsmäßigen Verbindung der Bewegungsenden der Bimetalle mit der Koppelbrücke.
Fig. 4a
einen Ausschnitt IVa-IVa in Fig. 4 betreffend die Schneidenlagerung der Koppelbrücke auf den Bimetallenden.
Fig. 5 + 7
das Einwirken des Verriegelungsschiebers auf konstruktiv unterschiedlich gestaltete Türverriegelungen in jeweiliger Entriegelungsstellung einer Tür.
Fig. 6 + 8
Darstellungen analog Fig. 5 und 7 in jeweiliger Verriegelungsstellung des Verriegelungsschiebers.
The object of the invention is explained in more detail with reference to exemplary embodiments shown in the figures. Show it:
Fig. 1
the locking device with all its essential functional parts in an exploded view
Fig. 2
a plan view of the lower housing part with all essential functional parts of the locking device in the unlocked position of the locking slide.
Fig. 3
a representation analogous to FIG. 2 with the locking slide located in the locking position.
Fig. 4
a representation of the drive connection of the movement ends of the bimetals with the coupling bridge.
Fig. 4a
a section IVa-IVa in Fig. 4 regarding the cutting edge bearing of the coupling bridge on the bimetal ends.
Fig. 5 + 7
the action of the locking slide on differently designed door locks in the respective unlocked position of a door.
6 + 8
Representations analogous to FIGS. 5 and 7 in the respective locking position of the locking slide.

Innerhalb des aus Isolierstoff bestehenden Gehäuseuntereils 1 ist ein Verriegelungsschieber 2 in Querrichtung 3 zwischen seiner Entriegelungsstellung (Fig. 2) und einer Verriegelungsstellung (Fig. 3) längsverschiebbar gelagert. Er weist die Umrissform eines auf seinem Kopf stehenden T auf und steht sowohl mit den beiden Horizontalenden 4,5 des T-Querbalkens als auch mit dem freien Vertikalende 6 des T-Längsbalkens durch Gehäuseöffnungen 7 in den Seitenwänden des Gehäuseunterteils 1 nach außen hinaus. Die Enden 4-6 sind die Antriebsenden des Verriegelungsschiebers 2, die zu Verriegelungszwecken mit türseitigen Verriegelungselementen 8 unmittelbar (Fig. 5,6) oder über zwischengeschaltete Übertragungsglieder 9 z.B. in Form eines Schwenkhebels mittelbar einwirken. Die Verriegelungselemente 8 sind z.B. Teil einer zu verriegelnden Gerätetür.Inside the lower housing part 1 made of insulating material is a locking slide 2 in the transverse direction 3 between its unlocked position (Fig. 2) and a locking position (Fig. 3) mounted longitudinally. He assigns the Outline shape of a T standing on its head and stands with both of them Horizontal ends 4,5 of the T-transom as well as with the free vertical end 6 of the T-longitudinal beam through housing openings 7 in the side walls of the Lower housing part 1 to the outside. The ends 4-6 are the drive ends of the locking slide 2, for locking purposes with door-side locking elements 8 immediately (Fig. 5,6) or via intermediate Transmission elements 9 e.g. act indirectly in the form of a swivel lever. The Locking elements 8 are e.g. Part of an appliance door to be locked.

Etwa rechtwinklig zur Querrichtung 3 sind innerhalb des Geräteunterteil 1 zwei Bimetalle 10,11 angeordnet. Sie sind streifenartig ausgebildet. Die Streifenebene verläuft rechtwinklig zur Zeichnungsebene der Fig. 1-4. Die Streifenebenen verlaufen parallel zueinander und halten zwischen sich einen gewissen Seitenabstand ein. Die Bimetalle sind mit ihren Fußenden 12,13 gehäuseseitig fixiert. Dort sind sie fest mit den Kontaktzungen 14,15 verschweißt, die in Schlitzen 16 innerhalb der Gehäuseseitenwand 17 fixiert einliegen und mit ihren Kontaktenden aus dem Gehäuseinnenraum von außen kontaktierbar hinausstehen (Fig. 2,3).Approximately perpendicular to the transverse direction 3 there are two within the lower part 1 of the device Bimetals 10,11 arranged. They are designed like stripes. The stripe plane runs at right angles to the plane of the drawing of FIGS. 1-4. The stripe levels run parallel to each other and keep a certain lateral distance between them on. The bimetals are fixed on the housing side with their foot ends 12, 13. There are they are firmly welded to the contact tongues 14, 15, which are in slots 16 inside the housing side wall 17 lie fixed and with their contact ends from the Protect the interior of the housing from the outside (Fig. 2,3).

Die Bimetalle 10,11 greifen mit ihren Bewegungsenden 18,19 an dem in Querrichtung 9 verschiebbaren Verriegelungsschieber 2 mittelbar an. Diese Mittelbarkeit ist allerdings nur insoweit vorhanden, als zwischen den Bewegungsenden 18,19 der Bimetalle 10,11 und dem eigentlichen Verriegelungsschieber 2 eine Koppelbrükke 20 zwischengeschaltet ist, die indessen durch ihren Formschlusseingriff 21 in den Verriegelungsschieber 2 und durch ihre antriebsmäßige Gleichwirkung sowie ihre Parallellage zum Verriegelungsschieber 2 funktionsmäßig als Bestandteil des Verriegelungsschiebers 2 anzusehen ist. Die Zweiteiligkeit von Koppelbrücke 20 und Verriegelungsschieber 2 hat u.a. fertigungs- bzw. montagetechnische Gründe. Die beiden Bimetalle 10,11 bilden in Draufsicht gemeinsam mit dem Verriegelungsschieber 2 bzw. seiner Koppelbrücke 20 gewissermaßen die beiden Vertikalschenkel und den aufgesattelten Horizontalschenkel eines dem griechischen Buchstaben π entsprechenden Gesamtgebildes. Montagetechnisch sind der Verriegelungsschieber 2 bzw. die Koppelbrücke 20 auf die Bewegungsenden 18,19 der beiden Bimetalle 10,11 aufgesetzt. Die beiden Bimetalle 10,11 wirken also wie die beiden Pfeiler eines Brückenhauptes als Trageteile für die Koppelbrücke 20, deren Längsführung vom Gehäuseboden 22 und dem Gehäusedeckel 23 als Seitenführungen bewirkt ist, wenn sich das Gehäuse in seinem Montageendzustand befindet. Diese Lagerung bzw. Halterung der Koppelbrücke 20 ist besonders reibungsarm und dadurch auch energiesparend. Die Bimetalle 10,11 stehen mit ihren Bewegungsenden 18,19 in Ausnehmungen 24 an der ihnen zugewandten Flanke der Koppelbrücke 20 hinein. Die Ausnehmungen 24 haben dabei die Funktion eines Schneidenlagers (Fig. 4). Außerdem bilden sie durch ihre Querwände eine Verschiebesicherung für die Bewegungsenden 18,19 der Bimetalle 10,11. Die Koppelbrücke 20 schwebt daher frei auf den Bimetallenden 18,19 und ist dabei allein durch die Bimetalle 10,11 bewegungsgeführt. Es bedarf keiner zusätzlichen Führung der Verschiebebewegung der Koppelbrücke 20 innerhalb des Gehäuses 1, wenngleich eine solche Führung durch den Gehäuseboden 22 oder den Gehäusedeckel 23 nicht ausgeschlossen sein soll. Die Koppelbrücke 20 ist also praktisch auf die Enden der Bimetalle 10,11 aufgesteckt.The bimetals 10, 11 engage with their movement ends 18, 19 in the transverse direction 9 sliding locking slide 2 indirectly. This is indirectness however only to the extent that between the ends of the movement 18, 19 the Bimetals 10, 11 and the actual locking slide 2 a coupling bridge 20 is interposed, which, however, by its positive engagement 21 in the locking slide 2 and by their drive-like interaction and their parallel position to the locking slide 2 functionally as part of Locking slide 2 can be seen. The two-part design of coupling bridge 20 and locking slide 2 has i.a. manufacturing or assembly reasons. In plan view, the two bimetals 10, 11 form together with the locking slide 2 or its coupling bridge 20, so to speak, the two vertical legs and the saddled horizontal leg of one of the Greek Letters π corresponding overall structure. In terms of assembly, the locking slide is 2 or the coupling bridge 20 to the movement ends 18, 19 of the two bimetals 10.11. The two bimetals 10, 11 thus act like the two pillars of a bridge head as supporting parts for the coupling bridge 20, the longitudinal guidance of the housing base 22 and the housing cover 23 as Side guides is effected when the housing is in its final assembly state located. This mounting or mounting of the coupling bridge 20 is special low-friction and therefore also energy-saving. The bimetals 10.11 stand with their movement ends 18, 19 in recesses 24 on the side facing them Flank of the coupling bridge 20 into it. The recesses 24 have the Function of a cutting edge bearing (Fig. 4). They also form through their transverse walls a shift lock for the movement ends 18, 19 of the bimetals 10.11. The coupling bridge 20 therefore hovers freely on the bimetal ends 18, 19 and is guided by the bimetals 10, 11 alone. No one is needed additional guidance of the displacement movement of the coupling bridge 20 within of the housing 1, although such guidance through the housing base 22nd or the housing cover 23 should not be excluded. The coupling bridge 20 is practically attached to the ends of the bimetals 10, 11.

Die Verbindung der Koppelbrücke 20 mit dem Verriegelungsschieber 2 erfolgt durch einen losen Formschlusseingriff 21. Dieser überträgt die Antriebsbewegung der Bimetalle 10,11 auf den Verriegelungsschieber 2, ohne aber auf den Verriegelungsschieber einwirkende Lagerdrücke auf die Koppelbrücke 20 und dadurch indirekt auf die Bimetalle 10,11 zu übertragen und dadurch etwa deren Funktionsfähigkeit zu beeinflussen bzw. zu beeinträchtigen.The coupling bridge 20 is connected to the locking slide 2 by a loose positive engagement 21. This transmits the drive movement the bimetals 10, 11 on the locking slide 2, but without on the locking slide acting bearing pressures on the coupling bridge 20 and thereby indirectly to the bimetals 10, 11 and thereby approximately their functionality to influence or impair.

Die Koppelbrücke 20 ist zwischen den beiden Ausnehmungen 24 für die Bewegungsenden 18,19 der Bimetalle 10,11 bzw. zwischen ihren Zapfen für einen Formschlusseingriff 21 am Verriegelungsschieber 2 auf der dem Verriegelungsschieber 2 zugewandten Seite ausgemuldet (Mulde 25). Der Verriegelungsschieber 2 enthält auf der Koppelbrücke 20 zugewandten Seite eine mit der Mulde 25 korrespondierende Gegenmulde 26. Die Mulden 25,26 umschließen einen Hohlraum, in welchen vom Gehäuseboden 22 her ein Gehäusevorsprung 27 hineinsteht. Der Gehäusevorsprung 27 bildet die gehäuseseitige Abstützung der Kippfeder 28, die mit ihrem unteren Ende den Boden 29 der Mulde 25 der Koppelbrükke 20 beaufschlagt. Zur Zentrierung der beiden Enden der Kippfeder 28 einerseits an der Koppelbrücke 20 und andererseits an dem Gehäusevorsprung 27 dienen die in die Federwindung eingreifenden Schraubenköpfe 30,31 von Halteschrauben. Die Kippfeder 28 bildet den Energiespeicher eines Kippsprungwerkes, welches in den Fig. 2 und 3 in seinen beiden Kippstellungen dargestellt ist, die einerseits die Verriegelungsstellung (Fig. 3) und andererseits die Entriegelungsstellung (Fig. 2) bilden. In diesen Stellungen beaufschlagt die Kippfeder 22 die Koppelbrücke 20 in Querrichtung 3 derart, dass sie mit ihren Enden entweder an der linken Seitenwand 32 (Fig. 3) in Verriegelungsstellung oder an der rechten Gehäusewand 33 (Fig. 2) in Entriegelungsstellung anliegt. Diese Gehäuseanlage bewirkt eine spannungsunabhängige Lagestabilität der Koppelbrücke 20 bzw. des Verriegelungsschiebers 2 in Verriegelungsstellung (Fig. 3) und in Entriegelungsstellung (Fig. 2). Der Gehäusevorsprung 27 ist gleichzeitig Teil der gehäuseseitigen Längsführung für den Verriegelungsschieber 2, wie das aus den Fig. 1-3 deutlich erkennbar ist. Außerdem hält die Kippfeder 28 die Koppelbrücke 20 in sämtlichen Positionen sicher auf den Bewegungsenden 18,19 der Bimetalle 10,11.The coupling bridge 20 is between the two recesses 24 for the ends of the movement 18.19 of the bimetals 10.11 or between their pins for one Positive engagement 21 on the locking slide 2 on the locking slide 2 facing side hollowed out (trough 25). The locking slide 2 contains on the coupling bridge 20 side with the trough 25 corresponding counter trough 26. The troughs 25, 26 enclose a cavity, in which a housing projection 27 protrudes from the housing base 22. The housing projection 27 forms the housing-side support of the tilt spring 28, the bottom 29 of the trough 25 of the coupling bridge with its lower end 20 acted upon. To center the two ends of the rocker spring 28 on the one hand serve on the coupling bridge 20 and on the other hand on the housing projection 27 the screw heads 30, 31 engaging in the spring turn of retaining screws. The toggle spring 28 forms the energy store of a toggle mechanism, which 2 and 3 is shown in its two tilt positions, on the one hand the locking position (Fig. 3) and on the other hand the unlocking position (Fig. 2) form. In these positions, the rocker spring 22 acts on the coupling bridge 20 in the transverse direction 3 such that their ends either on the left side wall 32 (Fig. 3) in the locked position or on the right housing wall 33 (Fig. 2) in the unlocked position. This housing system causes a voltage-independent positional stability of the coupling bridge 20 or the Locking slide 2 in the locked position (Fig. 3) and in the unlocked position (Fig. 2). The housing projection 27 is also part of the housing side Longitudinal guide for the locking slide 2, as that of FIGS. 1-3 is clearly recognizable. In addition, the toggle spring 28 holds the coupling bridge 20 in all positions securely on the movement ends 18, 19 of the bimetals 10.11.

Die Koppelbrücke 20 lagert vollständig reibungsfrei auf den Antriebsenden 18,19 der Bimetalle 10,11. Diese Auflage ist stabilisiert durch die zwischen den beiden Antriebsenden 18,19 von oben auf die Koppelbrücke 20 einwirkende Kippfeder 28. Die Führung des Verriegelungsschiebers 2 bzw. der Koppelbrücke 20 innerhalb des Gehäuses 1 kann im Übrigen durch die Gehäusewände bewerkstelligt sein, die auch die Endanschläge für die beiderseitigen Verschiebebewegungen bilden.The coupling bridge 20 is supported on the drive ends 18, 19 without any friction of bimetals 10.11. This edition is stabilized by that between the two Drive ends 18, 19 from above acting on the coupling bridge 20 rocker spring 28. The guidance of the locking slide 2 or the coupling bridge 20 within of the housing 1 can otherwise be accomplished through the housing walls be also the end stops for the mutual sliding movements form.

Die Thermo-Bimetalle 10,11 sind mit ihren aktiven Seiten einander zugewandt (Fig. 4). Sie werden durch PTC-Widerstände 34,35 aufgeheizt. Die PTC's 34,35 werden über die Kontaktzungen 14a und 39 oder 15a und 39 an Spannung gelegt. Werden in der Entriegelungsstellung nach Fig. 2 die Kontakte 14a,39 an Spannung gelegt, so heizt der PTC-Widerstand 34 auf und das Bimetall 10 schwenkt mit seinem Bewegungsende 18 entgegen dem Uhrzeigersinn aus. Diese Schwenkbewegung wird sehr reibungsarm über die Koppelbrücke 20 auf den Verriegelungsschieber 2 übertragen, der zur Verriegelung in Querrichtung 3 nach links bewegt wird.The active sides of the thermal bimetals 10, 11 face one another (Fig. 4). They are heated by PTC resistors 34, 35. The PTC's 34.35 are connected to voltage via the contact tongues 14a and 39 or 15a and 39. 2, the contacts 14a, 39 on When voltage is applied, the PTC resistor 34 heats up and the bimetal 10 swings out with its end of movement 18 counterclockwise. This Swiveling movement becomes very low-friction via the coupling bridge 20 onto the locking slide 2 transferred to the locking in the transverse direction 3 after is moved to the left.

Die Bewegungsstrecke bis zum Anschlag der Koppelbrücke 20 an die Gehäuseseitenwand 32 teilt sich in zwei etwa gleichlange Teilstrecken auf. Zur Durchmessung der ersten Teilstrecke wird der auf der Erwärmung des PTC's 34 beruhende, durch die Ausbiegung des Bimetalls 10 bewirkte Schwenkantrieb benötigt, der in diesem Bewegungsabschnitt auch die Kompression der Kippfeder 28 bewirkt, bis deren Längsachse die Totlage erreicht hat, in der sie etwa rechtwinklig zur Querrichtung 3, also bezogen auf Fig. 2 und 3 vertikal ausgerichtet ist. Mit dem Durchschreiten der Totlage expandiert die Kippfeder 28 und übernimmt dadurch den weiteren Verschiebeantrieb für die Koppelbrücke 20 bzw. für den Verriegelungsschieber 2 und zwar unabhängig von der Erhitzung des PTC's 34. Im Gegenteil öffnet diese von der Kippfeder 28 ausgehende, auf den Verriegelungsschieber 2 einwirkende, nunmehr auf rein mechanischem Antrieb beruhende Verschiebebewegung im zweiten Bewegungsabschnitt den Kontakt 40 zwischen den Kontaktzungen 14 und 14a und unterbricht damit die Bestromung des PTC's 34. Der zweite Bewegungsabschnitt für die Verriegelungsbewegung ist also unabhängig von dem elektrischen Antrieb. Er wird allein durch die Kippfeder 28 bewirkt und erst durch das Anschlagen des linken Endes der Koppelbrücke 20 an der Gehäuseinnenwand 32 abgeschlossen. In dieser Anschlagstellung ist der Verriegelungsschieber 2 lagestabilisiert in seiner Verriegelungsstellung (Fig. 3). Gleichzeitig ist der Kontakt 41 geschlossen und damit befindet sich die Verriegelungsvorrichtung in einer für ihre Entriegelung bereiten Ausgangsposition.The movement distance up to the stop of the coupling bridge 20 on the housing side wall 32 is divided into two sections of approximately the same length. For diameter In the first section, the warming of the PTC's 34, caused by the deflection of the bimetal 10 pivot drive required in this movement section also causes the compression of the rocker spring 28 until whose longitudinal axis has reached the dead center, in which it is approximately perpendicular to the transverse direction 3, that is oriented vertically with reference to FIGS. 2 and 3. By walking through the dead center expands the rocker spring 28 and thereby takes over further displacement drive for the coupling bridge 20 or for the locking slide 2 regardless of the heating of the PTC's 34. On the contrary opens this, starting from the toggle spring 28, onto the locking slide 2 acting displacement movement, now based on purely mechanical drive in the second movement section, the contact 40 between the contact tongues 14 and 14a and thus interrupts the energization of the PTC's 34. The second movement section for the locking movement is therefore independent from the electric drive. It is caused solely by the rocker spring 28 and only by striking the left end of the coupling bridge 20 on the housing inner wall 32 completed. The locking slide is in this stop position 2 stabilized in its locking position (Fig. 3). simultaneously the contact 41 is closed and thus the locking device is located in a starting position ready for their unlocking.

Die Entriegelung aus der in Fig. 3 dargestellten Verriegelungsstellung erfolgt dadurch, dass die Kontaktzunge 15a und die Druckfeder 37 über die Kontaktzunge 39 zur Bestromung des PTC's 35 an Spannung gelegt werden. Dadurch heizt der PTC 35 und das Bimetall 11 schwenkt mit seinem Bewegungsende 19 im Uhrzeigersinn aus. Der vorstehend beschriebene, auf die Kippfeder 28 bezogene Kippvorgang wird nun in umgekehrter Richtung vollzogen. Nach dem Überschreiten der Totlage der Kippfeder 28 übernimmt diese den weiteren Verschiebeantrieb für die Rückführung der Koppelbrücke 20 in die Entriegelungsstellung (Fig. 2), die ebenfalls rein mechanisch durch die Expansion der Kippfeder 28 lagestabilisiert ist. Dabei wird durch die Öffnung des Kontaktes 41 die Bestromung des PTC' 35 abgeschaltet. Bis zur erneuten Umschaltung ist das System wieder spannungsfrei. Da die Querkraft der Kippfeder 28 größer ist als die Rückstellkraft der abkühlenden Bimetalle 10,11, bleibt das System auch bei einem Spannungsausfall in den jeweiligen Schaltstellungen (Fig. 2,3) spannungsfrei. Auch durch relativ hohe, maschinenbedingte Umgebungstemperaturen auftretende Bimetallspannungen werden durch die entgegengesetzte Anordnung bzw. Wirksamkeit der beiden Bimetalle 10,11 kompensiert.The unlocking from the locking position shown in Fig. 3 takes place by that the contact tongue 15a and the compression spring 37 over the contact tongue 39 to energize the PTC's 35. This heats up the PTC 35 and the bimetal 11 pivot with its end of motion 19 in Clockwise. The one described above related to the rocker spring 28 The tilting process is now carried out in the opposite direction. After passing the dead position of the rocker spring 28 takes over the further displacement drive for the return of the coupling bridge 20 in the unlocking position (Fig. 2), the also stabilized position purely mechanically by the expansion of the rocker spring 28 is. Through the opening of the contact 41, the current supply to the PTC '35 off. The system is de-energized again until the switchover takes place. Since the transverse force of the rocker spring 28 is greater than the restoring force of the cooling Bimetals 10.11, the system remains in the event of a power failure respective switching positions (Fig. 2,3) voltage-free. Also due to relatively high, machine-related Ambient temperatures occurring bimetal voltages due to the opposite arrangement or effectiveness of the two bimetals 10.11 compensated.

Die Steuerung der Signalkontakte 42 einer Signaleinrichtung wird ebenfalls durch die Koppelbrücke 20 bewerkstelligt. Je nach deren Stellung kann daher von außen der Systemzustand an beliebiger Stelle erkannt werden.The control of the signal contacts 42 of a signal device is also carried out by the coupling bridge 20 accomplished. Depending on their position, therefore, from the outside the system status can be recognized at any point.

Der Vorteil der Verriegelungsvorrichtung liegt in den äußerst kleinen Abmessungen der Einheit. Ein Hub von beispielsweise 3 mm des Verriegelungsschiebers 2 reicht zur Verriegelung der Mechanik aus. Die Bistabilität der beiden Stellungen (Verriegelungs- und Entriegelungsstellung) ist gewährleistet. Die momentane Stellung des Verriegelungsschiebers 3 ist von etwaigen Spannungsausfällen unabhängig und sie bleibt auch bestehen. Der Antrieb verharrt in seiner Ausgangsstellung, wenn während des Umschaltvorganges ein Spannungsausfall auftritt. Nur während der Schaltvorgänge zur Ver- und Entriegelung liegt Spannung am Bimetall bzw. am PTC an. Die Bimetalle und PTC's sind thermisch nur gering belastet, so dass sie eine hohe Lebensdauer gewährleisten. Das System arbeitet geräuschlos im Gegensatz zu einem Magnetantrieb. Das System entriegelt automatisch bei Anschluss an Spannung. Der Energiebedarf ist sehr gering. Er beträgt ca. 1 A über max. 2 sec bei 230 V. Auch kleinere Spannungen als die Nennspannung 230 V reichen problemlos zur vollen Funktionsfähigkeit aus. Es entfällt das bei anderen Systemen, z.B. bei einem motorischen Antrieb notwendige Gestänge, da der Verriegelungshebel 8 z.B. direkt am Gerät anbringbar ist. The advantage of the locking device is the extremely small dimensions the unit. A stroke of, for example, 3 mm of the locking slide 2 is sufficient to lock the mechanics. The bistability of the two positions (Locking and unlocking position) is guaranteed. The current one Position of the locking slide 3 is independent of any power failures and it remains. The drive remains in its starting position, if a voltage failure occurs during the switching process. Voltage is only present during the switching processes for locking and unlocking Bimetal or at the PTC. The bimetals and PTC's are only slightly thermally stressed, so that they ensure a long service life. The system works silent in contrast to a magnetic drive. The system unlocks automatically when connected to voltage. The energy requirement is very low. He is approx. 1 A over max. 2 sec at 230 V. Also lower voltages than the nominal voltage 230 V are sufficient for full functionality without any problems. It does not apply in other systems, e.g. Linkage necessary for a motor drive, because the locking lever 8 e.g. can be attached directly to the device.

BezugszeichenlisteLIST OF REFERENCE NUMBERS

11
GehäuseunterteilHousing bottom
22
Verriegelungsschieberlocking slide
33
Querrichtungtransversely
44
HorizontalendeHorizontal end
55
HorizontalendeHorizontal end
66
Vertikalendevertical end
77
Gehäuseöffnunghousing opening
88th
Verriegelungselementlocking element
99
Übertragungsgliedtransmission member
1010
Bimetallbimetallic
1111
Bimetallbimetallic
1212
Fußendefoot
1313
Fußendefoot
1414
Kontaktzungecontact tongue
1515
Kontaktzungecontact tongue
1616
Schlitzslot
1717
GehäuseseitenwandHousing sidewall
1818
Bewegungsendemovement end
1919
Bewegungsendemovement end
2020
Koppelbrückecoupling bridge
2121
FormschlusseingriffForm-fitting engagement
2222
Gehäusebodencaseback
2323
Gehäusedeckelhousing cover
2424
Ausnehmungrecess
2525
Muldetrough
2626
Gegenmuldeagainst depression
2727
Gehäusevorsprunghousing projection
2828
Kippfedertoggle spring
2929
Bodenground
3030
Schraubenkopfscrew head
3131
Schraubenkopfscrew head
3232
GehäuseseitenwandHousing sidewall
3333
GehäuseseitenwandHousing sidewall
3434
PTC-WiderstandPTC resistor
3535
PTC-WiderstandPTC resistor
3636
Druckfedercompression spring
3737
Druckfedercompression spring
3838
Brückebridge
3939
Kontaktzungecontact tongue
4040
KontaktContact
4141
KontaktContact
4242
Signalkontaktsignal contact

Claims (14)

  1. Electrothermically controlled locking device for locking the door of a domestic appliance, in particular of a domestic appliance which is operated at high temperature, having a locking member (2) which can be moved, by means of a bimetallic drive, between an opening position and a locking position and vice versa, having a first bimetallic element (10) as a locking drive and a second bimetallic element (11) as an unlocking drive, and having a tilting snap-action mechanism which acts on the locking member (2), wherein the bimetallic elements (10, 11) are each driven only over a first part of their movement path and supply energy to the energy store (28) of the tilting snap-action mechanism until a dead-centre position is reached, this energy being released again, when the dead-centre position of the tilting snap-action mechanism is exceeded, as a movement drive for the rest of the movement path and retaining the locking member (2) in a stable end position at the end of the respective movement path, characterized in that the moving ends (18, 19) of the bimetallic elements (10, 11) are each positioned securely in a recess (24) on that flank of a drive member which is directed towards the moving ends (18, 19), with the result that each moving end (18, 19) essentially forms a knife-edge bearing with the corresponding recess (24), the drive member being a coupling bridge (20) which is positioned between the moving ends (18, 19) of the bimetallic elements (10, 11) and the locking member (2) and is drive-connected to the locking member (2) on its flank which is directed towards the same.
  2. Locking device according to Claim 1, characterized in that the energy store (28) of the tilting snap-action mechanism is positioned between the two bimetallic elements (10, 11), outside the moving ends (18, 19) of the bimetallic elements (10, 11).
  3. Locking device according to Claim 2, characterized in that the energy store (28) acts on the locking member (2) or the coupling bridge (20) from the side which is located opposite the abutment side of the bimetallic elements (10, 11).
  4. Locking device according to one or more of the preceding claims, characterized in that the coupling bridge (20) and the locking member (2) are drive-connected to one another by a form-fitting engagement (21).
  5. Locking device according to Claim 4, characterized by a loose form fit of the engagement.
  6. Locking device according to one or more of the preceding claims, characterized by a housing (1) in which the bimetallic elements (10, 11), the coupling bridge (20), the locking member (2) and the energy store (28) are positioned together.
  7. Locking device according to Claim 6, characterized in that the energy store is a compression spring (28) which is active as a snap-action member and has its other end supported on the housing (1).
  8. Locking device according to Claim 6 or 7, characterized in that the locking member (2) has recessed into it a space (26) in which are positioned, on the one hand, the energy store (28) and, on the other hand, a housing protrusion (27) which is supported on the energy store (28).
  9. Locking device according to Claim 8, characterized in that the housing protrusion (27) is part of the housing-mounted longitudinal guide for the locking member (2).
  10. Locking device according to one or more of the preceding claims, characterized in that the locking member (2) and/or the coupling bridge (20) are/is active as a switching drive for an electrical position indicator.
  11. Locking device according to one or more of the preceding claims, characterized in that the planes of movement of the bimetallic elements (10, 11) and of the locking members (2) and/or of the coupling bridge (20) and of the tilting snap-action mechanism coincide.
  12. Locking device according to Claim 11, characterized in that the plane of movement of the contacts (42) of the signal arrangement essentially coincides with the planes of movement of the other functional parts.
  13. Locking device according to one or more of Claims 6 to 12, characterized in that the electrical terminal contacts (14, 14a; 15, 15a; 39) are pressed into the housing (1) on that side of the housing which is directed away from the locking member (2).
  14. Locking device according to Claim 13, characterized in that its moving parts are fixed between housing protrusions formed integrally on the inside of the housing base (22), which is injection-molded from plastic, and they are retained in a functionally moveable but captive manner in a common housing plane by a housing cover (23) which has been placed in position.
EP19990121728 1998-11-04 1999-11-03 Locking device, for example for domestic appliances Expired - Lifetime EP0999326B1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE19850815 1998-11-04
DE19850815 1998-11-04
DE19852578 1998-11-14
DE19852578A DE19852578C5 (en) 1998-11-04 1998-11-14 Locking device z. B. for household appliance doors

Publications (3)

Publication Number Publication Date
EP0999326A2 EP0999326A2 (en) 2000-05-10
EP0999326A3 EP0999326A3 (en) 2003-02-12
EP0999326B1 true EP0999326B1 (en) 2004-10-13

Family

ID=26049941

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19990121728 Expired - Lifetime EP0999326B1 (en) 1998-11-04 1999-11-03 Locking device, for example for domestic appliances

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US (1) US6345848B1 (en)
EP (1) EP0999326B1 (en)
DE (1) DE29824095U1 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10154850C1 (en) * 2001-11-08 2003-06-18 Ellenberger & Poensgen door lock
EP1340870B1 (en) * 2002-02-27 2009-11-18 emz-Hanauer GmbH & Co. KGaA Unit with shape memory metal actuator for doorlocks of domestic appliances
DE102004060607B3 (en) * 2004-12-16 2006-03-23 Emz-Hanauer Gmbh & Co. Kgaa Door locking system for household appliance may lock door in partially-open position and has detector determining state of door together with locking mechanism
ITRM20100046A1 (en) * 2010-02-09 2011-08-10 Bitron Spa SECURITY DEVICE.
IT1400623B1 (en) * 2010-06-18 2013-06-14 Eltek Spa DOOR LOCK DEVICE FOR APPLIANCES WITH THERMAL ACTUATOR.

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DE1678088A1 (en) * 1967-09-20 1971-08-19 Siemens Ag Locking and / or unlocking device for motor vehicle doors
US3540767A (en) * 1968-10-01 1970-11-17 Caloric Corp Rotary thermal lock with slip clutch
US3617957A (en) * 1968-12-12 1971-11-02 Texas Instruments Inc Locking devices for washing machines or electromechanical appliances with bimetallic element
US3638636A (en) * 1970-01-22 1972-02-01 Lear Siegler Inc Air heater
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DE3008756C2 (en) * 1980-03-07 1985-08-08 Kiekert GmbH & Co KG, 5628 Heiligenhaus Locking device for a household machine or the like.
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IT1202431B (en) * 1987-01-27 1989-02-09 Onofrio Rocchitelli DEVICE FOR QUICK LOCKING AND DELAYED UNLOCKING OF THE DEVICES FOR CLOSING MACHINE DOORS HAVING INSIDE PARTS SUBJECT TO INERTIAL ROTATION, IN PARTICULAR FOR DOORS OF WASHING MACHINE DOORS
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Also Published As

Publication number Publication date
US6345848B1 (en) 2002-02-12
EP0999326A2 (en) 2000-05-10
EP0999326A3 (en) 2003-02-12
DE29824095U1 (en) 2000-04-27

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