EP1665488A2 - Systeme pour actionner un element de mobilier d'assise ou de couchage, a reglage electrique - Google Patents

Systeme pour actionner un element de mobilier d'assise ou de couchage, a reglage electrique

Info

Publication number
EP1665488A2
EP1665488A2 EP04786741A EP04786741A EP1665488A2 EP 1665488 A2 EP1665488 A2 EP 1665488A2 EP 04786741 A EP04786741 A EP 04786741A EP 04786741 A EP04786741 A EP 04786741A EP 1665488 A2 EP1665488 A2 EP 1665488A2
Authority
EP
European Patent Office
Prior art keywords
switching
relay
switch
contact
arrangement according
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP04786741A
Other languages
German (de)
English (en)
Other versions
EP1665488B1 (fr
Inventor
Klaus Bellingroth
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.)
Dewert Antriebs und Systemtechnik GmbH and Co KG
Original Assignee
Okin Gesellschaft fur Antriebstechnik mbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Okin Gesellschaft fur Antriebstechnik mbH filed Critical Okin Gesellschaft fur Antriebstechnik mbH
Publication of EP1665488A2 publication Critical patent/EP1665488A2/fr
Application granted granted Critical
Publication of EP1665488B1 publication Critical patent/EP1665488B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
    • H01H13/50—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a single operating member

Definitions

  • the invention relates to an arrangement for operating an electrically adjustable seat and / or recliner according to the preamble of claim 1.
  • Today's seating and or reclining furniture can be equipped with electric adjustment drives.
  • An electrical circuit for controlling the drives is described, for example, in the generic European patent EP 0615667 B2.
  • the operating voltage is applied to a servomotor via a relay, the relay coil being connected to the operating potential via a pushbutton switch which has a single switch contact.
  • a further relay is provided, which is arranged in the power supply line to the transformer and which is also operated via the specified push button switch.
  • This push-button circuit is usually located on a manual control element, which is connected to the other elements of the electrical circuit arrangement via a cable.
  • a defect such as a short circuit occurs, for example in the cable or in the pushbutton switch, this can trigger undesired control functions.
  • operating situations are possible that also involve a certain risk potential.
  • the invention already achieves this object with an arrangement for operating an electrically operable seating and / or reclining furniture with the features of claim 1.
  • the arrangement has a device for isolating the supply current from control devices, which is provided with a first mains-connected voltage source for providing a Operating potential for a servomotor are connected.
  • a first relay is included, which is arranged on the primary or secondary side of a mains transformer, the relay being in an off position in the non-excited state.
  • An auxiliary voltage source can be connected to the control input of the relay to release the supply to the control device.
  • the arrangement is characterized in that a switching means is included which has two mutually independent switching contacts for simultaneous triggering of the switching processes, the switching contacts being actuatable by one or two pushbutton switches.
  • the first switch contact for connecting the auxiliary voltage source to the control input of the first relay and the second switch contact for applying the operating potential to the servomotor can be triggered.
  • Simultaneous triggering of the switching processes means that the contacts are both triggered at a certain point in time in order to start the specified actions, but it is very possible that both switching contacts change over to the triggering state at different points in time. In any case, this must be ensured be that when a control function is called up by the second switching contact, the supply the control devices are disconnected from the power supply.
  • the design of the arrangement according to the invention ensures that the occurrence of a single fault, especially in the area of a manual control element for calling up control functions, does not trigger any undesired functions when a single fault occurs. For example, in the event of a short circuit in the first switching contact, which releases the supply current for the control devices, an actuating motor is not controlled automatically and incorrectly. Even a short circuit in the second switch contact does not automatically lead to an adjustment of the motor, since the supply current for the control devices is not released by the specified error as long as the first switch contact is not actuated.
  • the configuration of the arrangement according to the invention means that, despite compliance with a first-fault safety, both the supply current can be disconnected for the control devices and the function can be triggered by a manual control element.
  • the invention is based on the idea of providing first-fault safety for an operating element in that the relay for releasing the supply current for the control devices and the control functions for controlling the servomotor are triggered independently of one another by the provision of a switching means which has two switching contacts for triggering the actions mentioned.
  • the device for isolating the supply current from control devices is designed to enable the control devices from the network, the first relay spatially separated from the control devices and on the primary side of the transformer. This constructive measure can greatly reduce the risk of fire or electric shock caused by a transformer permanently connected to the mains.
  • the manual control element can be coupled to the remaining part of the electrical arrangement both via an air interface and by wire.
  • a non-wired coupling can include an infrared or a radio connection.
  • a mains transformer is used to generate the necessary operating voltages, which has at least two secondary windings to generate the first voltage source, to provide an operating potential for the motor and to generate a second voltage source which is connected to the control input of the first relay can be connected by means of the first switch.
  • the arrangement comprises two essentially independent circuits which provide a further improvement in the first-fault safety of the arrangement according to the invention. If, for example, a fault occurs in one of the two circuits, this usually has no influence on the other circuit, so that the influence of the fault is essentially ruled out can.
  • Both circuits are only affected if a fault occurs in the mains transformer, which affects both secondary windings of the transformer.
  • a separate transformer is provided for each of the mains-connected voltage sources, both transformers being separated from the mains by the first relay when the relay is in the off position, ie in the rest position and on the primary side to the transformer angeord ⁇
  • a capacitor for smoothing the voltage supplied by the rectifier may be connected to two mains-connected voltage sources, which are formed by the transformer and a downstream rectifier.
  • These capacitors can also have the function of an energy store in order to provide operating functions such as the closing of the first relay for applying the mains voltage to the transformer even at times when the mains voltage is separated from the arrangement. In order to be able to make these operating functions available if the
  • capacitors are discharged, for example due to their leakage currents, it can be provided that a battery of both the first and the second mains-connected voltage source is connected in parallel via diodes.
  • the control input of the first relay has a control input of a second relay in parallel or is connected in series, the second relay being arranged on the secondary side in the circuit of the first voltage source and in the non-excited state in an off position in which it disconnects the parallel circuit from the first mains-connected voltage source and battery from the servomotor.
  • the control devices can be formed by a plurality of second switch contacts, which function as motor function switches and which either direct the operating potential to the motor or via an additional relay.
  • Each of the second switching contacts is assigned a first switching contact to form an above switching means. For example, it is possible for a single switch with a first switch contact to be arranged in the operating part and for calling up a control function for the
  • Adjustment of a servomotor one of the switches must be printed with a second switch contact.
  • the first switching contact assigned to em is provided for every second switching contact on the manual control unit. In this case, all first switching contacts are arranged electronically in parallel.
  • the invention can in principle be implemented with all possible push buttons. Not only mechanical pushbutton switches but also inductive or capacitive switches can be used. In order to avoid malfunctions, mechanical switches are to be preferred.
  • the arrangement of a single switch with a first switch contact on one side of a manual control unit is particularly ergonomic, while the second switches with the second switch contact, which serve to control the servomotor, can be arranged on the flat side of the manual control unit.
  • manual control unit refers to a device that the user generally uses for actuation. is picked up.
  • the switching means comprises an actuating element which, when actuated, directly or indirectly on both the first and the second switching contact to trigger the two switching contacts acts.
  • This con- structural feature is particularly easy to apply to mechanically triggered switches.
  • the switching means can be constructed in such a way that, depending on the actuation of the switching means, one of the two switching contacts is triggered with a time delay compared to the other. This can bring particular advantages in terms of circuit technology.
  • the two switching contacts are arranged with respect to one another such that when one switching contact is actuated, a mechanical force is exerted on the second switching contact, so that the second switching contact is also triggered.
  • the switching means is designed in a stacked construction and has a mechanical actuator, a membrane switch that can be deflected in the direction of actuation with a switchable foil contact, and a pressure switch with a plunger that is arranged under the membrane and has a switchable contact ,
  • the components arranged one above the other in the actuating device are in such a mechanical operative connection to one another that when the beta tiger is drawn, it presses on the switching foil to trigger the switching foil contact, causing the switching foil to bend and press against the plunger to trigger the pressure switch.
  • the first switching contacts can be provided for all switching devices in the form of a switching mat, which provides a large number of membrane switches on one level.
  • a mechanical actuator and pressure switch in the actuating direction are assigned to each foil contact of the switching mat to form the switching means described in a stacked construction.
  • These pressure switches each provide the second switching contact for the respective switching device.
  • a switching means with a very low failure rate is formed by a mechanical actuator which can be moved onto associated actuating elements by two test switches which are arranged essentially next to one another to trigger the two switches.
  • Both switches can be designed, for example, as pressure switches with a plunger, the plungers being actuated either simultaneously or laterally one after the other, depending on the design, by the mechanical actuator, as a result of which the switches are correspondingly spaced in time or triggered simultaneously.
  • a locking switch for example in the form of a key switch, is provided electrically in series with all the first switches in the manual control element. Despite the actuation of one of the first switch contacts and the associated second switch contact, this interlock switch prevents the application of a voltage to the control input of the first relay and thus the generation of an operating voltage for the servomotor (s).
  • FIG. 1 shows a schematic diagram of the structure of an arrangement according to the invention for operating an electrically operable seating and / or recliner and
  • Fig. 2 shows an embodiment of a switching means for the arrangement shown in Fig. 1.
  • FIG. 1 shows an arrangement according to the invention for operating an electrically operable seating and / or reclining couch in a schematic diagram.
  • the circuit is divided into four sections A to D.
  • A relates to the hand control, which is connected to the rest of the circuit arrangement C via a cable in section B.
  • Section D denotes the part of the primary connection of the transformer to the mains which essentially has the mains supply, ie a mains cable and the relay 2a.
  • the arrangement comprises in particular a transformer 1 with a primary winding 1 a and two secondary windings 1 b, 1 c, which are used to generate two mains-connected voltage sources.
  • the first results from tapping the series connection of the secondary windings and supplying the converted mains voltage to a rectifier 8, the output of which is connected in parallel with a storage capacitor 9.
  • the second mains-connected voltage source is generated by tapping the converted mains voltage from one of the secondary windings and feeding it to a rectifier 3, the output of which is in turn connected in parallel to the storage capacitor 4.
  • the circuits running from both mains-connected voltage sources are independent of one another.
  • the circuit which is assigned to the storage capacitor 4, runs via a control coil 2 b of a two-pole relay, the relay being arranged on the primary side in the mains supply of the transformer 1.
  • the circuit runs to the hand control unit 20 via a pushbutton switch 5 functioning as the first switching contact and a key switch 6 back to the negative pole of the storage capacitor 4.
  • a battery 10 is arranged in parallel with the storage capacitor 4 via diodes, which together form an auxiliary voltage source for actuating the relay 2 a when the arrangement is not on the network, i.e. the relay 2 a is in the off state, since the associated control coil 2 b is not energized.
  • the control coil 2 b of the two-pole relay 2 a is a further control coil 7 b of a single-pole relay 7 a in the present case assigned in parallel, which closes the circuit in response to excitation of the control coil 7 b. This means that the relay contact 7 a is open when the associated control coil 7 b is not energized.
  • the battery 10 is also connected in parallel to the storage capacitor 9 of the other mains-connected voltage source via diodes.
  • a servomotor 11 which can be supplied with the operating voltage for controlling the motor via second switches 11 a, 11 b with a second switching contact.
  • the switches 11b and 11a are designed and arranged such that in the rest position both connections of the motor 11 are at the plus potential of the storage capacitor 9.
  • the switches 11 a, 11 b have two switching positions with which the respective motor connection can be connected either to the plus or the minus potential of the voltage source provided by the rectifier 8. Accordingly, one switch is used for forwarding and the other switch for returning motor 11.
  • Both switches 11 a, 11 b are pressed, the motor with both connections is at the negative potential of the voltage source.
  • Both the first switch 5 with the first switching contact and the switches 11 a, 11 b with the second switching contact are designed as mechanical pushbuttons.
  • the key switch 6 is closed. Since the first relay 2 a is open when the control coil 2 b is not energized, no mains current initially flows into the transformer, so that there are voltages at the storage capacitors 4, 9 which depend on past operation. The parallel connection of the battery to both storage capacitors ensures, however, that the battery voltage is minimal at the capacitors 4,9. In this situation, a mistake works in you the switch 11 a, 11 b in such a way that a keying is triggered or such an actuation is carried out unintentionally, the open relay 7 a prevents the corresponding control function, which is assigned to the respective key, from being carried out. This prevents the servomotor 11 from being activated due to a fault, for example due to a contact short circuit.
  • both the control coil 2b and the control coil 7b can be excited due to the battery supply to the capacitor 4.
  • Switching the two-pole relay 2 a has no effect, but the single-pole relay 7 a is set to an on state, as a result of which the battery voltage or the voltage at the storage capacitor 9 in the manual control element is present at the contacts of the second switch.
  • the first switch 5 is actuated simultaneously with the first switch contact and one of the two switches 11 a, 11 b with the second switch contact, an actuating movement of the motor can be triggered.
  • the control coil 2 b is excited by actuation of the switch 5 and the two-pole relay is thus switched, as a result of which the mains voltage is present on the transformer side.
  • the relay 7a switches, as described.
  • the voltage supplied by the rectifier 8 is smoothed at the capacitor 9, so that the operating voltage for controlling the servomotor 11 is present at the contacts on the input side in the manual control element.
  • the servomotor 11 is controlled.
  • the voltage of the battery 10 is selected so that it is lower than that of the mains-connected voltage source, which can be tapped at the output of the rectifier 8. This ensures that during normal operation the
  • the respective operating potential not by the Battery 10 is provided, but is only available for very specific function controls when the mains voltage fails. This applies, for example, to lowering the mob into a basic position.
  • the battery voltage to the other mains-connected voltage source is set to a similar value, here 9 V, so that it can be ensured in any case that a sufficiently large voltage is available at all times to control the coils 2 b and 7 b via the switch 5 excite.
  • the cable in section B comprises 6 lines a, b, c, d and el and e2, which are assigned to the two circuits or the supply of the operating voltage to the motor.
  • a cable break with a short circuit in one of the two circuits does not lead to an unwanted function triggering, i.e. to operation of the servomotor 11.
  • a single fault in the manual control element for example a short circuit in the switch 5 with the first switching contact or in one of the second switches 11 a, 11 b with the second switching contact does not lead to an undesired function triggering.
  • the switch 5 is spatially separated from the function-triggering switches 11 a, 11 b. As mentioned, both the switch 5 with the first switching contact and the second switch 11 a or 11 b with the second switching contact must be printed to trigger a predetermined function
  • switching means in the manual control element e which includes both the first and the second switching contact, both switching contacts being arranged laterally one behind the other by printing of a single mechanical actuator.
  • a switching means 30 is shown schematically in FIG. 2.
  • the switching means 30 has a plurality of elements arranged one above the other in the actuating device. These are a mechanical actuator 31, a membrane switch which can be deflected in the direction of actuation and a pressure switch which is also arranged in the direction of actuation below the membrane.
  • the membrane switch is single-pole (see switch 5 in FIG. 1) and the pressure switch 33 is designed as a changeover switch (see switch 11a or 11b in FIG. 1).
  • the membrane switch accordingly has two contact tongues 32 a and 32 b, while the pressure switch underneath has three connection contacts.
  • the actuator 31 When the actuator 31 is actuated manually, it presses against the membrane switch 32, so that the two contact tongues 32 a and 32 b come into contact.
  • the actuation path of the actuation element 31 is set in such a way that when the actuator is further printed, the latter moves the film contact in the direction of a pushing ice 34 of the pressure switch 33 until the lower surface of the film switch 32 is finally moved against the push rod, whereby the switch 33 is triggered becomes.
  • a defect in one of the two switches for example a short circuit in the membrane switch, cannot trigger an undesired control function for controlling the motor 11.
  • the switching means shown in FIG. 2 is eminently suitable for forming a corresponding switching means matrix with which several motors can be controlled as indicated. All the first switching contacts, ie the switches 32 of the switching means matrix, are connected in parallel.
  • the switch 32 in FIG. 2 corresponds to the switch 5 in FIG. 1.
  • the switches 33 of the switching means matrix assigned to these motors are connected in parallel on the input side, so that all the respective changeover contacts on the positive pole of the storage capacitor 9 or its negative pole, so that each motor supply of the associated switch 33 with simultaneous actuation of the membrane switch 32 applied to the operating potential
  • the first relay is not arranged on the primary side but on the secondary side of the mains transformer, as a result of which the control devices are de-energized in their rest position.
  • the first relay can be arranged in a connection on the secondary side in the connection between the rectifier 8 and the secondary side of the transformer 1.
  • the first relay it is also possible for the first relay to be designed with multiple poles and to separate both the first rectifier 8 and the second rectifier 3 in their rest position from the transformer.

Landscapes

  • Control Of Electric Motors In General (AREA)
  • Control Of Direct Current Motors (AREA)
  • Relay Circuits (AREA)
  • Keying Circuit Devices (AREA)
  • Control Of Multiple Motors (AREA)

Abstract

L'invention vise à mettre au point un système permettant de libérer le courant d'alimentation de dispositifs de commande, satisfaisant aux normes de sécurité les plus élevées, tout en étant aisé à manipuler, en service. Ledit système comprend un dispositif pour libérer le courant d'alimentation de dispositifs de commande, qui sont reliés à une première source de tension rattachée au réseau, afin de produire un potentiel d'exploitation pour un servomoteur. Il est prévu un premier relais, qui est disposé côté primaire ou côté secondaire d'un transformateur. A l'état non excité, ledit relais se trouve en position de coupure. Une source de tension auxiliaire peut être reliée à l'entrée de commande du relais, afin de libérer le réseau au niveau du dispositif de commande. Ledit système se caractérise en ce qu'il est prévu un élément de commutation qui présente deux contacts de commutation indépendants l'un de l'autre, pour lancer simultanément les processus de commutation. Les contacts de commutation peuvent être actionnés par un ou deux commutateurs à touche. A cet effet, le premier contact de commutation peut être lancé, pour commuter la source de tension auxiliaire au niveau de l'entrée de commande du premier relais et le second contact de commutation peut être lancé pour appliquer le potentiel d'exploitation au niveau du servomoteur.
EP04786741A 2003-09-10 2004-09-09 Systeme pour actionner un element de mobilier d'assise ou de couchage, a reglage electrique Expired - Lifetime EP1665488B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10341705.2A DE10341705B4 (de) 2003-09-10 2003-09-10 Anordnung zum Betrieb eines elektrisch verstellbaren Sitz- und/oder Liegemöbels
PCT/DE2004/002019 WO2005025024A2 (fr) 2003-09-10 2004-09-09 Systeme pour actionner un element de mobilier d'assise ou de couchage, a reglage electrique

Publications (2)

Publication Number Publication Date
EP1665488A2 true EP1665488A2 (fr) 2006-06-07
EP1665488B1 EP1665488B1 (fr) 2010-11-10

Family

ID=34258542

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04786741A Expired - Lifetime EP1665488B1 (fr) 2003-09-10 2004-09-09 Systeme pour actionner un element de mobilier d'assise ou de couchage, a reglage electrique

Country Status (6)

Country Link
US (1) US7567050B2 (fr)
EP (1) EP1665488B1 (fr)
JP (1) JP4359310B2 (fr)
DE (1) DE10341705B4 (fr)
ES (1) ES2356081T3 (fr)
WO (1) WO2005025024A2 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005018686B4 (de) * 2005-04-21 2007-03-22 Barthelt, Hans-Peter, Dipl.-Ing. Pflegebett mit Doppelmotorantrieb
DE102006033712A1 (de) * 2006-07-20 2008-01-31 Logicdata Electronic & Software Entwicklungs Gmbh Steuerung für elektrisch verstellbare Möbel
DE202009005020U1 (de) 2009-07-14 2010-12-16 Dewert Antriebs- Und Systemtechnik Gmbh Erstfehlersicherer elektromotorischer Möbelantrieb
DE202010005413U1 (de) * 2010-05-08 2011-10-12 Dewert Antriebs- Und Systemtechnik Gmbh Elektromotorischer Möbelantrieb mit einer Netzfreischaltungseinrichtung und entsprechende Netzfreischaltungseinrichtung
DE202011001008U1 (de) * 2011-04-29 2012-07-31 Dewertokin Gmbh Elektromotorischer Möbelantrieb
WO2013128034A1 (fr) * 2012-03-02 2013-09-06 Dewertokin Gmbh Unité d'actionnement d'un mécanisme de meuble à moteur électrique, mécanisme de meuble à moteur électrique et meuble correspondant
DE102012104758B4 (de) * 2012-06-01 2020-03-19 Timotion Technology Co., Ltd. Standby Batteriebox für einen elektronischen Zylinder

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US3917929A (en) * 1973-11-19 1975-11-04 Baylor Co Systems and methods for solving simultaneous equation
SE470300B (sv) * 1991-11-08 1994-01-10 Em Evolution Ab Anordning för omkoppling av en spänningskälla till en elektrisk apparat
DE4139647A1 (de) * 1991-12-02 1993-06-03 Koch Dietmar Anordnung zur netzfreischaltung von steuereinrichtungen
DE10012050B4 (de) 2000-03-14 2004-02-26 OKIN Gesellschaft für Antriebstechnik mbH & Co. KG Anordnung zum Verstellen von beweglichen Möbelteilen
DE10205951A1 (de) * 2002-02-13 2003-08-21 Cimosys Ag Goldingen Steuerungsanordnung für mit elektrischer Niederspannung betriebene, mit Netzfreischaltung versehene netzabhängig gespeiste Geräte
ATE496421T1 (de) * 2005-09-05 2011-02-15 Ideassociates Iom Ltd Verfahren zum steuern eines mechanisch kommutierten elektromotors

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Also Published As

Publication number Publication date
JP2007505597A (ja) 2007-03-08
WO2005025024A2 (fr) 2005-03-17
DE10341705B4 (de) 2016-06-09
DE10341705A1 (de) 2005-04-28
EP1665488B1 (fr) 2010-11-10
US20070195480A1 (en) 2007-08-23
JP4359310B2 (ja) 2009-11-04
WO2005025024A3 (fr) 2005-06-23
US7567050B2 (en) 2009-07-28
ES2356081T3 (es) 2011-04-04

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