EP2454747B1 - Système d'entraînement pour meuble, à commande par moteur électrique, muni d'un système de sécurité fonctionnant dès l'apparition de la premiere erreur - Google Patents

Système d'entraînement pour meuble, à commande par moteur électrique, muni d'un système de sécurité fonctionnant dès l'apparition de la premiere erreur Download PDF

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Publication number
EP2454747B1
EP2454747B1 EP10734967.2A EP10734967A EP2454747B1 EP 2454747 B1 EP2454747 B1 EP 2454747B1 EP 10734967 A EP10734967 A EP 10734967A EP 2454747 B1 EP2454747 B1 EP 2454747B1
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EP
European Patent Office
Prior art keywords
safety
furniture drive
motor
fail
electromotive furniture
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.)
Not-in-force
Application number
EP10734967.2A
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German (de)
English (en)
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EP2454747A1 (fr
Inventor
Armin Hille
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.)
Dewertokin GmbH
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Dewertokin GmbH
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Publication of EP2454747A1 publication Critical patent/EP2454747A1/fr
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H47/00—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current
    • H01H47/002—Monitoring or fail-safe circuits
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C20/00—Head -, foot -, or like rests for beds, sofas or the like
    • A47C20/04—Head -, foot -, or like rests for beds, sofas or the like with adjustable inclination
    • A47C20/041—Head -, foot -, or like rests for beds, sofas or the like with adjustable inclination by electric motors
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G7/00—Beds specially adapted for nursing; Devices for lifting patients or disabled persons
    • A61G7/002—Beds specially adapted for nursing; Devices for lifting patients or disabled persons having adjustable mattress frame
    • A61G7/018—Control or drive mechanisms

Definitions

  • the invention relates to a first-fail-safe electromotive furniture drive according to the preamble of claim 1.
  • Such electromotive furniture drives are known in different versions for the adjustment of various furniture. These furniture includes, among other things, reclining and seating furniture, such as beds, slatted frames, TV chairs.
  • electromotive furniture drives in associated furniture, for example in nursing beds and hospital beds used.
  • relevant regulations, standards and laws with regard to safety apply, whereby the so-called first fault safety is of great importance.
  • First-fault safety means that when a first fault, for example a component, occurs, there is no danger for the user and no unwanted and / or unintentional functions and / or unintentional movements of movable furniture elements are produced which create dangers.
  • EP 1 341 201 A2 describes an electromotive adjustment arrangement for furniture with a release relay, via whose contacts a total motor current flows, which is then fed to a further relay arrangement for acting on a drive motor to effect an adjustment function.
  • This release relay is assigned a function monitoring module, which controls the functionality of the release relay.
  • DE 103 41 705 A1 describes an arrangement for operating an electrically adjustable seat and / or deck furniture with a device for supply current release with a relay.
  • the arrangement comprises a switching means for switching a motor and a further switching means for switching the relay for supply current release, wherein the switching means of independent switching contacts, which are simultaneously actuated
  • document DE 200 19 583 U1 discloses a first fail-safe electromotive furniture drive according to the preamble of claim 1.
  • the object of the present invention is therefore to provide an improved first-fail-safe electromotive furniture drive.
  • the object is achieved by a furniture drive with the features of the characterizing part of claim 1.
  • Direct connection means that the motor current of the drive motor flows directly through the actuator, with their switching contacts for a high motor current (for example in the range 1 to 10 A) as opposed to a low control current (for example in the range of a few mA to 0.5 A) a relay circuit are designed.
  • Such drives with direct circuit are, for example, located in the low price sector, wherein the invention in a simple structure and thus also cost effective for this purpose is used.
  • controls that include switching amplifier devices, such as relays, solid state switches, and the like, which are driven by a low control current and switch high motor current. It flows only the low control current through the actuator. Combinations are possible, of course.
  • each of a motor contact element and a safety contact element are mechanically coupled together.
  • this coupling can be designed such that one of the contact elements can be actuated in advance.
  • a simultaneous operation is of course also possible.
  • the safety contact elements of the actuating units switch in coupling with the at least one safety device whose safety switching element. They can therefore be designed for a low control current.
  • the safety device is arranged in the actuating device.
  • the safety switching element of the safety device may be a relay and / or a semiconductor switch.
  • the safety device can also be arranged in the supply unit, the voltage source and / or combined in these. In this case, the combined arrangement means that components of the safety device are placed at different locations, for example in the supply unit and in the voltage source.
  • the safety contact elements of the at least two actuating units form the at least one safety device.
  • the safety contact elements are designed for the high motor current and connected in series with the associated motor contact elements.
  • a safety switching element in the form of an additional relay or semiconductor switch can be omitted.
  • a housing of the supply unit can be smaller.
  • the safety contact elements can also be designed as a semiconductor switch with control contact elements.
  • the signaling device may have optical and / or acoustic signaling elements. It is also possible to use haptic detectors. It is also conceivable that a device for forwarding messages to external display or monitoring devices is provided. In this case, the forwarding, for example, wired, for example, via the telephone network, electricity or the Internet, done. A wireless forwarding of messages, for example via WLAN or wireless networks, is of course possible.
  • Fig. 1 shows a schematic block diagram of a first embodiment of an electromotive furniture drive according to the invention.
  • the electromotive furniture drive 1 comprises in this example an actuating device 2, a supply unit 3 and a drive unit 4 for adjusting an adjustable part or more of a piece of furniture, not shown.
  • the supply unit 3 here has a voltage source 8, which is for example a transformer and / or an accumulator.
  • the voltage source 8 can be connected to a mains connection 5 to an electrical supply network.
  • the supply unit 3 is here equipped with a safety device 9 for first fault safety of the electromotive furniture drive 1, which will be explained in more detail below.
  • the mains connection 5 can also be attached to the housing of the supply unit 3 as an integrally formed, attached and / or pluggable plug section (for example, as a plug-in power supply unit).
  • the actuating device 2 is connected via a connecting line 6 to the supply unit 3 via a distributor 18, for example a T-distributor.
  • a distributor 18 and the drive unit 4 is connected via a motor line 7, wherein this is continued here in the actuator 2.
  • the distributor 18 is located on or in the supply unit 3.
  • the connecting line 6 also includes the motor line 7.
  • the distributor 18 may, for example, also be connected to or inserted in the drive unit.
  • the actuating device 2 here has two first actuating units 12 and two second actuating units 13 for actuating in each case a drive unit 4.
  • a drive unit 4 In this example, only one group 12, 13 is used, since only one drive unit 4 is present.
  • more than two drive units 4 can be used, in which case a correspondingly adapted actuator 2 is used and further actuation units 12, 13 has.
  • the furniture drive 1 is designed such that the motor current flowing through the motor line 7 of the drive unit 4 from the supply unit 3 to the actuator 2, where it can be fed by the actuatable actuating units 12, 13 in a corresponding polarity for supplying the drive unit 4 in the motor line 7.
  • This is a so-called directly switched furniture drive 1.
  • the actuating device 2 is provided with a signaling device 10, which serves both to display the function and to display a first error and thus the first error security.
  • the reporting device 10 may be executed optically and / or acoustically. Here it has three optical signaling elements 11, which will be described in more detail below.
  • a circuit diagram of this first embodiment according to Fig. 1 is in Fig. 2 shown.
  • the supply unit 3 here has a transformer 8.1 as a voltage source 8, wherein a primary winding of the transformer 8 via a primary fuse 22, for example, a thermal fuse in the primary winding, is connected to the power connector 5, and wherein a secondary winding of the transformer 8 via a resettable fuse element 21 is connected to a rectifier bridge 19 for the provision of DC voltage.
  • the primary fuse 22 and / or the fuse element 21 can also be assigned in each case additionally a fuse.
  • Primary fuse 22 and / or fuse element 21 can also be only fuses themselves.
  • the rectifier bridge 19 is followed by a smoothing capacitor 20.
  • the negative pole of this DC voltage is connected to a main minus line 6.1 of the connecting line 6.
  • a main positive line 6.2 of the connecting line 6 is connected to a first safety switching contact 15.1 of a safety switching element 15, for example a relay.
  • This first safety switching contact 15.1 is opened when the safety switching element 15 is not energized.
  • a closing contact connection of the first safety switching contact 15.1 leads to a motor plus 6.3, and a control input of the safety switching element 15, here the winding of the relay is connected to a control line 6.4 of the connecting line 6.
  • the safety switching element 15 is connected to the negative pole (main minus line 6.1) of the secondary DC voltage.
  • the safety switching element 15 forms here the safety device 9.
  • the actuating device 2 - also referred to as a so-called manual switch - comprises here the first actuating unit 12 and the second actuating unit 13.
  • the actuating unit 12 is in this example a button with an actuating button, which acts on two contact elements, namely a first motor contact element 12.1 and a first safety contact element 12.2.
  • the first motor contact element 12.1 is a change-over contact and the first safety contact element 12.2 is designed as a make contact.
  • the second actuating unit 13 is constructed with a second motor contact element 13.1 (changeover contact) and a second safety contact element 13.2 (normally open contact).
  • both contact elements 12.1 / 12.2 and 13.1 / 13.2 can be actuated simultaneously or in succession.
  • first the safety contact element 12.2 / 13.2 is actuated ("leading contact element") and then the motor contact element 12.1 / 13.1.
  • Both contact elements 12.1 / 12.2 and 13.1 / 13.2 can each have, for example, a common actuating element, for example a plunger. But you can also be operated by a kind of rocker simultaneously or sequentially, with only one keystroke is required.
  • both contact elements 12.1 / 12.2 and 13.1 / 13.2 also individually actuated, but both must be actuated to effect a movement of the drive unit 4.
  • the contact elements 12.2., 13.2 can also be designed so that they have a switching output, which consists for example of a semiconductor switch or relay switching contact, which is controlled by a certain size, such as a touch switch, proximity switch, touch screen u. like.
  • each changeover contact of the motor contact elements 12.1 / 13.1 is connected in each case with its connection a via the motor line 7 to a motor 4.1 of the drive unit 4.
  • each changeover contact connects the connection a with an opener connection b.
  • each changeover contact connects the connection a with a normally open connection c.
  • the ⁇ ffneran everything b are each with the main minus lead 6.1 connected and the normally open terminals c are respectively connected to the motor plus 6.3.
  • the safety contact elements 12.2 and 13.2 are each connected to a connection d with the control line 6.4 and are each connected to a terminal e to the main positive line 6.2.
  • the actuating device 2 is equipped with the signaling device 10, which here comprises three indicator lights 11.1, 11.2 and 11.3 in the form of light-emitting diodes (LED) with respective series resistors R1, R2 and R3.
  • the first indicator light 11.1 is here connected via series resistor R1 to the control line 6.4 and the main minus lead 6.1, wherein the cathode of the LED is located on the main minus lead 6.1.
  • the second indicator light 11.2 is connected to the cathode via the series resistor R2 to the main negative lead 6.1 and with its anode to the motor plus 6.3.
  • the third indicator light 11.3 is connected with its anode via the series resistor R3 to the main positive line 6.2 and with its cathode to the motor plus line 6.3.
  • this first or the second actuating unit 12, 13 is actuated in order to switch the motor 4.1 in a corresponding direction of movement, then the respective safety contact element 12.2, 13.2 switches on the safety switching element 15 whose safety switching contact 15.1 connects the main positive line 6.2 to the motor plus 6.3.
  • the normally open terminals b of the motor contact elements 12.1, 13.1 are at the potential of the main positive line 6.2, the motor 4.1 is switched on accordingly and the first indicator light 11.1 lights up as long as the respective safety contact element 12.2, 13.2 is actuated. It signals its function. When you release the depressed actuator unit 12, 13, the first indicator light must go out 11.1.
  • Indicator light 11.1 thus serves to display the function and error display of the safety contact elements 12.2, 13.2 and thus contributes to the first error safety.
  • the second indicator light 11.2 lights up. It thus serves to display the function of the safety switching element 15. If it does not light despite actuated safety contact element 12.2, 13.2 and its respective correct function display, so signaled the second indicator light 11.2 a first error of the safety switching element 15 and also contributes to Lease—When.
  • the series resistor R3 of the third indicator light 11.3 is particularly high impedance.
  • the third indicator light 11.3 signals a faulty motor contact element 12.1, 13.1 in the case of lights, for example in the event that the closing contact a / c of a respective changer of a motor contact element 12.1, 13.1 is burned or welded and no longer opens. Then lies in the unactuated state of the actuator 2, the motor plus 6.3 via the so incorrectly closed motor contact element 12.1, 13.1, thus connected via the motor line 7 motor 4.1 and the other motor contact element 12.1, 13.1 on the main minus 6.1 (via the internal resistance of the motor 4.1). In this way, then the third indicator light 11.3 is turned on and thus indicates this first error. The current flowing through the motor is so low that the motor does not start.
  • FIG. 2 illustrates a circuit diagram of a first example of a furniture drive 1 not belonging to the invention, wherein, in contrast to the first embodiment according to FIG Fig. 2
  • the safety switching element 15 is arranged in one of the voltage source 8 to the power connection 5 upstream power switching unit 16 and connects the voltage source 8 to the power supply when energizing the safety switching element 15 with a second safety switch contact 15.2.
  • the safety switching contact 15.2 is designed here bipolar.
  • the safety switching element 15 also forms the safety device 9.
  • the network switching unit 16 is also referred to as mains isolation.
  • an auxiliary voltage source 17 is arranged with an auxiliary voltage transformer 17.1, which is permanently connected to the mains connection 5.
  • the auxiliary voltage source 17 may also be a battery and / or an accumulator.
  • the auxiliary voltage source 17 supplies a DC voltage (here by bridge rectifier and smoothing capacitor) whose negative pole to the safety switching element 15, the cathode of the LED of the second indicator light 11.2, which is arranged here in the network switching unit 16 (but can also be arranged in the actuator 2) , and an auxiliary negative lead 6.5 of the connecting line 6 is connected.
  • the positive pole of the auxiliary voltage source 17 is connected via an auxiliary positive line 6.6 to the main positive line 6.2 of the connecting line 6.
  • the safety switching element 15 is provided with a field connection or control connection connected to the control line 6.4.
  • a motor plus 6.3 is not present, since the main plus line 6.2 and the main minus 6.1 by the safety switching element 15 are switchable.
  • the actuator units 12, 13 of the actuator 2 are constructed as in the first embodiment. Their connections to the connection cable 6 are as follows.
  • the terminals a of the motor contact elements 12.1, 13.1 are connected to the motor line 7 (as in FIG Fig. 2 ).
  • the terminals b are also located on the main minus lead 6.1 as in the first embodiment.
  • connections c are connected to the main positive line 6.2.
  • the terminals d of the safety contact elements 12.2, 13.2 are together on the control line 6.4, and the terminals e are connected to the main positive line 6.2 and the auxiliary positive line 6.6.
  • a respective safety contact element 12.2, 13.2 switches on the safety switching element 15 by means of the potential of the auxiliary positive lead 6.6 on the main positive lead 6.2, which connects the voltage source 8 to the mains connection 5.
  • the main positive line 6.2 leads the potential of the voltage source 8, which is switched by the respective actuated motor contact element 12.1, 12.2 on the motor 4.1 for the movement thereof.
  • the first indicator light 11.1 (indicator light designed as LED) is connected in this first example with the cathode to the main minus lead 6.1 and the anode via the dropping resistor R1 to the main positive lead 6.2. It lights up when the safety switch element 15 is turned on when actuated. If it does not light when actuated, this is a signaling of a first fault of the safety switching element 15.
  • the second indicator light 11.2 also lights up when actuated and indicates a defective safety contact element 12.2, 13.2 when actuated by non-lighting.
  • the third indicator light 11.3 is connected via a diode unit 14 which is connected between the motor lines 7, connected to the anode via a series resistor R4, wherein its cathode is connected to the Hilfsminusieitung 6.5.
  • the diode unit 14 has a first diode 14.1 and a second diode 14.2, whose cathodes are connected together, and whose anodes are each connected to a motor line 7.
  • the cathodes are connected to the third indicator light 11.3.
  • the engine is switched on 4.1, that is, when pressed, the third indicator light 11.3. If it does not light despite being actuated, it signals a first fault of a motor contact element. If it lights up after releasing an actuating unit 12, 13, it signals, for example, a glued closing contact a / c of a previously actuated motor contact element 12.1, 13.1.
  • Fig. 4 shows a second embodiment of the furniture drive 1 according to the invention, wherein an advantageous simple construction of a first-proof furniture drive 1 is provided with direct circuit.
  • the connecting line 6 has only the main minus line 6.1 and the main positive line 6.2, which are connected to the voltage source 8 (in FIG Fig. 2 described).
  • the normally open terminals c of the motor contact elements 12.1, 13.1 are respectively connected to the terminals d of the associated safety contact elements 12.2, 13.2 whose normally open terminals e are in turn connected to the main positive line 6.2.
  • the first indicator light 11.1 (LED) lies with its cathode at the anode of a series-connected third diode 14.3 of a diode unit 14 whose cathode is connected both to the terminal d of the first safety contact element 12.2 and to the terminal d of the second safety contact element 13.2 is.
  • the anode of the first indicator light 11.1 is located at half the supply voltage via a high-impedance voltage divider (R5, R6), which is connected between the main minus line 6.1 and the main positive line 6.2.
  • the second indicator light 11.2 (LED) lies with its anode at the cathode of a diode connected in series with the fourth diode 14.3 of the diode unit 14, whose anode is connected both to the terminal d of the first safety contact element 12.2 and to the terminal d of the second safety contact element 13.2 ,
  • the cathode of the first indicator light 11.1 is also at half supply voltage to the high-impedance voltage divider (R5, R6).
  • the second indicator light 11.2 lights to check the function as long as the actuation lasts.
  • a first fault of the motor contact elements 12.1, 13.1, safety contact elements 12.2, 13.2, safety switching elements 15 and / or safety switch contacts 15.1 does not lead to uncontrolled behavior of the furniture drive and is signaled immediately. This is a first-fail safe electric motor furniture drive 1 created in direct circuit.
  • Fig. 5 a circuit diagram of a not belonging to the invention second example of a furniture drive 1 is shown.
  • the safety switching element 15 is similar to the first example Fig. 3 arranged in one of the voltage source 8 to the mains connection 5 upstream power switching unit 16.
  • the auxiliary voltage source 17 for example, as a battery, rechargeable battery (accumulator) and / or capacitor designed with high capacity.
  • a positive pole of the auxiliary voltage source 17 is connected via a first protective diode 23 to the auxiliary positive line 6.6, wherein the negative pole is connected to the main minus line 6.1.
  • the protective diode 23 serves as a reverse polarity protection and on the other hand to protect against the voltage that leads the main positive line 6.2, which is generally higher than the auxiliary voltage. Because in another difference to the first example after Fig.
  • a connection of the main positive line 6.2 is carried out via a second protective diode 24 with the auxiliary positive line 6.6, wherein the second protective diode 24 is located with its anode to the main positive line 6.2.
  • the auxiliary positive line 6.6 always carries the potential of the auxiliary voltage. If the voltage source 8 is switched on, the auxiliary positive line 6.6 leads to the cathode of the first protective diode 23, the potential of the auxiliary voltage and behind the cathode, the potential of the main positive line 6.2 reduced by the forward voltage of the second protective diode 24th
  • the cathode of the LED of the second indicator light 11.2 is arranged in the power switching unit 16 and connected to the auxiliary negative lead 6.5 and the main negative lead.
  • the safety switching element 15 is as in the first example after Fig. 3 connected to the exciter connection or control connection to the control line 6.4. Again, a motor plus 6.3 is not present, since the main plus line 6.2 and the main minus 6.1 by the safety switching element 15 are switchable.
  • the actuator units 12, 13 of the actuator 2 are as in the first example after Fig. 3 built up. Their connections to the connection cable 6 are as follows.
  • the terminals a of the motor contact elements 12.1, 13.1 are connected to the motor line 7 (as in FIG Fig. 2 and 3 ).
  • the terminals b are also as in the first embodiment according to Fig. 2 and to the first example according to Fig. 3 on the main minus lead 6.1 and the leads c are connected to the main positive lead 6.2.
  • the terminals d of the safety contact elements 12.2, 13.2 are together on the control line 6.4, wherein the terminals e in contrast to the first example according to Fig. 3 are connected to the auxiliary positive line 6.6.
  • a respective safety contact element 12.2, 13.2 switches the safety switching element by the potential of the auxiliary positive lead 6.6 15, which connects the voltage source 8 to the mains connection 5.
  • the main positive line 6.2 leads the potential of the voltage source 8, which by the respective actuated motor contact element 12.1, 13.1 to the motor 4.1 is switched for its movement.
  • the potential of the main positive line 6.2 is then applied via the second protective diode 24 to the auxiliary positive line 6.6 and conducted to the safety switching element 15 via the respective closed safety contact element 12.2, 13.2.
  • the first indicator light 11.1 (indicator light designed as LED) is connected in this second example with the cathode to the main minus lead 6.1 and the anode via the dropping resistor R1 to the main positive lead 6.2. It lights up when the safety switch element 15 is turned on when actuated. If it does not light when actuated, this is a signaling of a first fault of the safety switching element 15.
  • the second indicator light 11.2 also lights up when actuated and indicates a defective safety contact element 12.2, 13.2 when actuated by non-lighting.
  • the invention is not limited to the embodiments described above. It is modifiable within the scope of the appended claims.
  • a fourth indicator light can be arranged as a supply voltage indicator in the actuating device 2, which indicates a defective fuse element 21, 22 at mains connection by non-lighting.
  • the indicator lights 11.1 to 11.3 of the annunciator 10 may also be configured as a multi-color LED. It is also possible, for example, to use LEDs with an integrated flashing circuit, whereby the flashing function is used for error representation.
  • the fuse switching element 15 of the first embodiment may be arranged in the actuating device 2, wherein the power supply is, for example, a plug-in power supply. Thus, it is possible to dispense with a separate housing of the supply unit 3.
  • the actuator 2 may also be arranged a so-called overcurrent shutdown for switching off an engine in case of overload.
  • overcurrent shutdown can also be arranged, for example, in the supply unit 3 and / or at another suitable location in the course of the power lines, which lead the motor current during operation of the motor.
  • the safety contact element 12.2, 13.2 may also be designed as a change-over, whereby it is possible to lock individual drives 4 against each other, if their adjustment functions are a danger at the same time.
  • the actuating device 2 is provided with locking locks or with suitable locking functions, whereby the power supply of the safety contact elements 12.2, 13.2 can be prevented.
  • a lighting of the actuator 2 for example with LEDs, possible.
  • the safety switching element 15 may also be a semiconductor switch instead of a relay.
  • the safety contact element 12.2 / 13.2 as a safety device 9 in the second embodiment may be a combination of a mechanical NO contact for control and a power semiconductor switch for the motor current.
  • the actuator 2 may also be provided with a further voltage source in the form of a battery or a rechargeable battery, whereby a so-called Notabsenkungsfunktion is given.
  • Other connections for additional lights, such as a bedside lighting can be provided for example by means of X-connector in the connecting line 6.
  • a so-called care LED can also be installed in the supply unit 3, whereby a line to the actuator 2 can be saved. This Care LED indicates a fault, for example, when it lights up when you press the control, does not light up, flashes, changes color, and so on. like.
  • the signaling elements 11 of the signaling device 10 are controlled by an evaluation unit.
  • This evaluation unit can, for example, as a diode gate (see diode unit 14), logic gates, controllers u.
  • This evaluation unit can, for example, as a diode gate (see diode unit 14), logic gates, controllers u.
  • diode gate see diode unit 14
  • logic gates like.
  • controllers u Like. Be formed, which evaluates voltage and / or current states of the different lines (with predeterminable setpoints, Sollkonstellationen etc.) compares and as a result, the signaling elements 11 turns on / off, flashing and / or change color.
  • safety contact elements 12.2, 13.2 these have a movable carbon contact, movable metal contact or a movable foil contact, which is mechanically coupled to an actuating unit and is designed to be manually operable.
  • the respective movable contact is in operative connection with a fixed contact, which is inextricably or cohesively in connection as a carbon contact or as a gold-plated contact of a fixed or flexible printed circuit board or film.
  • the safety device 9 or the signaling device 10 described in the introduction is generally considered as part of the furniture drive 1, wherein the safety device 9 and / or the signaling device 10 can be arranged in only one component or separately in different components of the furniture drive 1 in a preferred embodiment.
  • the safety device 9 and / or the reporting device 10 may be integrated in a component of the furniture drive 1, but at least electrically connected to at least one of the components, the components of the furniture drive 1 essentially from the Supply unit 3, the distribution unit 18, the actuator 2 and / or the drive unit 4 is formed or formed.
  • each drive unit 4 may be coupled with an overcurrent shutdown, however, an overcurrent shutdown may also be coupled with a number of drive units 4 or preferably with only one drive unit 4.
  • an overcurrent shutdown has a current measuring point, for example in the form of a Measuring resistor, with connected threshold and amplifier on and detects this excessive current flow and sends an electrical signal to the safety device 9 and / or to the annunciator 10.
  • the annunciator 10 is electrically coupled to the Care LED described above or through the Care LED formed.
  • This controlled breaker contact can be designed as an electromechanical relay contact or as an electronic semiconductor contact, wherein the energy supply to the input or the output of the supply unit 3 or the input of a number, all or each drive unit is transmitted via the contacts or via the semiconductor layers of the controlled breaker contact. If the safety device 9 detects a fault, it controls the controlled breaker contact, whereupon its contacts open or switch off nonconducting and interrupt or minimize the flow of current to the at least one drive unit 4.
  • the controlled breaker contact is designed as a manually controllable breaker contact and is integrated according to further embodiments in the housing of the actuator 2 or in a separate housing, which is connected to a cable of the actuator.
  • the manually controllable breaker contact is designed as a normally closed as a kind of emergency stop switch / button.
  • the controlled breaker contact can be designed as manually reversible, as electrically reversible or as irreversible breaker contact.
  • the distribution unit 18 described above is described in an embodiment described above as a T-distributor.
  • This T-distributor has in the simplest form three electrical connections, which can be designed in the form of cable connections and / or plug-in form in the form of plug-in connections.
  • a connection to the supply unit 3 a connection to the actuating device 2 and a connection to the drive unit 4 are electrically connected.
  • the furniture drive 1 several drive units 4 and / or several supply units 3 and / or have multiple actuators 2. All drive units 4, supply units 3 and actuators 2 can be electrically interconnected by only one distributor unit 18.
  • a plurality of distributor units 18 are provided, which are electrically connected to a number of drive units 4, supply units 3 and actuators 2.
  • the simplest embodiment provides at least one distribution unit 18, which is attached separately or on furniture or on a component of the furniture drive 1 or integrated therein.
  • the at least one distributor unit 18 may be arranged in the supply unit 3, in the voltage source 8, in the actuating device 2 or in the drive unit 4.
  • the safety device 9 and / or the reporting device 10 in the supply unit 3, in the power source 8, in the actuator 2 and / or in the drive unit 1 is arranged or electrically connected thereto.
  • the furniture drive 1 can be provided with a plurality of actuating devices 2 in different embodiments.
  • the actuators 2 may be formed as a hand switch or fixedly attached to the furniture panel or only accessible to the nursing staff switching device. At least one actuating device 2 is available to a person to be cared for or ill, while further actuating devices 2 can only be available to the nursing staff, since they are arranged, for example, spatially separated from other actuating devices 2 on the furniture.
  • a number or all of the actuators 2 may comprise a mechanical and / or an electric lock.
  • Mechanical lock locks are known, which can be electrically switched, for example, by introducing a mechanical key.
  • Electric lock locks are also known which can initiate lock functions via a key combination or by applying, for example, a magnetic key.
  • the supply unit 3 or the voltage source 8 described at the beginning can be designed according to different embodiments as a network-dependent or as a grid-independent supply unit 3.
  • Mains-independent supply units 3 have batteries or accumulators, which may be connected to upstream charging circuits.
  • Grid-dependent supply units 3 have transformers, eg with so-called EI core transformers, toroidal transformers or electronic transformers in the form of switched mode power supplies with a high frequency transformer.
  • the supply units 3 can be introduced directly into a socket according to different embodiments, may have a sealed housing in another embodiment and be designed as a base unit for placement on the floor and / or as a built-in device for installation in the furniture.

Landscapes

  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Nursing (AREA)
  • Control Of Electric Motors In General (AREA)
  • Keying Circuit Devices (AREA)
  • Invalid Beds And Related Equipment (AREA)
  • Power-Operated Mechanisms For Wings (AREA)
  • Safety Devices In Control Systems (AREA)

Claims (14)

  1. Entraînement de meuble à moteur électrique à sûreté intégrée (1) avec :
    au moins une unité d'entraînement (4) comprenant au moins un moteur (4.1) ;
    au moins un dispositif d'actionnement (2) avec au moins deux unités d'actionnement (12, 13) présentant chacune un élément de contact de moteur (12.1 ; 13.1) et un élément de contact de sécurité (12.2, 13.2);
    au moins une unité d'alimentation (3) ; et
    au moins un dispositif de sécurité (9), dans lequel
    le dispositif d'actionnement (2) est relié à l'unité d'alimentation (3) par l'intermédiaire d'au moins un distributeur (18) auquel est reliée également l'au moins une unité d'entraînement (4); et dans lequel
    l'entraînement de meubles (1) est construit avec un dispositif de signalisation (10) pour afficher le fonctionnement et une défaillance des au moins deux unités d'actionnement (12, 13) et du dispositif de sécurité (9); caractérisé en ce que les éléments de contact de moteur (12.1, 13.1) des au moins deux unités d'actionnement (12, 13) peuvent être connectés au l'au moins un moteur (4.1) pour commuter directement un courant de moteur; et
    le dispositif de signalisation (10) comprend au moins une diode électroluminescente (11.3, 11.1, 11.2) avec une résistance à haute impédance (R3, R5, R6), par l'intermédiaire de laquelle un faible courant traversant la résistance interne de le moteur (4,1) peut être balayé pour déterminer une première erreur.
  2. Entraînement de meuble à moteur électrique à sûreté intégrée (1) selon la revendication 1, caractérisée en ce que le premier élément de contact de moteur (12.1, 13.1) et l'élément de contact de sécurité (12.2, 13.2) sont couplés mécaniquement l'un à l'autre.
  3. Entraînement de meuble à moteur électrique à sûreté intégrée (1) selon la revendication 2, caractérisée en ce que l'un des éléments de contact de moteur (12.1, 13.1) et un élément de contact de sécurité (12.2, 13.2) peuvent être actionnés simultanément ou l'un après l'autre.
  4. Entraînement de meuble à moteur électrique à sûreté intégrée (1) selon l'une des revendications précédentes, caractérisée en ce que les éléments de contact de sécurité (12.2, 13.2) des au moins deux unités d'actionnement (12, 13) pour actionner une commande de sécurité l'élément de commutation (15) sont couplés à l'au moins un dispositif de sécurité (9).
  5. Entraînement de meuble à moteur électrique à sûreté intégrée (1) selon l'une des revendications précédentes, caractérisée en ce que l'au moins un dispositif de sécurité (9) est disposé dans le dispositif d'actionnement (2) de l'unité d'alimentation la source de tension (8), et / ou combinés dans celles-ci.
  6. Entraînement de meuble à moteur électrique à sûreté intégrée (1) selon la revendication 5, caractérisée en ce que les éléments de contact de sécurité (12.2, 13.2) des au moins deux unités d'actionnement (12, 13) forment l'au moins un dispositif de sécurité 9).
  7. Entraînement de meuble à moteur électrique à sûreté intégrée (1) selon la revendication 5, caractérisée en ce que les éléments de contact de sécurité (12.2, 13.2) sont connectés électriquement en série avec l'élément de contact de moteur correspondant (12.1, 13.1).
  8. Entraînement de meuble à moteur électrique à sûreté intégrée (1) selon l'une des revendications précédentes, caractérisée en ce que le dispositif de signalisation (10) comporte des éléments de signalisation (11) optiques et / ou acoustiques.
  9. Entraînement de meuble à moteur électrique à sûreté intégrée (1) selon la revendication 8, caractérisée en ce que le dispositif de signalisation (10) comporte des diodes électroluminescentes en tant qu'éléments de signalisation optique (11).
  10. Entraînement de meuble à moteur électrique à sûreté intégrée (1) selon la revendication 8, caractérisée en ce que le dispositif de signalisation (10) comporte au moins une unité d'analyse sous la forme d'au moins un circuit logique et / ou un dispositif de commande éléments de rapport (11).
  11. Entraînement de meuble à moteur électrique à sûreté intégrée (1) selon la revendication 10, caractérisée en ce que le dispositif de signalisation (10) comporte au moins une unité de diode (14) en tant qu'unité d'analyse.
  12. Entraînement de meuble à moteur électrique à sûreté intégrée (1) selon l'une des revendications précédentes, caractérisée en ce que le dispositif de sécurité (9) fait partie d'une unité de commutation de réseau (16) avec une source de tension électrique auxiliaire (17).
  13. Entraînement de meuble à moteur électrique à sûreté intégrée (1) selon la revendication 12, caractérisé en ce que la source de tension électrique auxiliaire (17) est un transformateur de tension auxiliaire (17.1) raccordé au secteur.
  14. Entraînement de meuble à moteur électrique à sûreté intégrée (1) selon la revendication 12, caractérisée en ce que la source de tension électrique auxiliaire (17) est une batterie, une batterie rechargeable et/ou un condensateur à haute capacité.
EP10734967.2A 2009-07-14 2010-07-14 Système d'entraînement pour meuble, à commande par moteur électrique, muni d'un système de sécurité fonctionnant dès l'apparition de la premiere erreur Not-in-force EP2454747B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE202009005020U DE202009005020U1 (de) 2009-07-14 2009-07-14 Erstfehlersicherer elektromotorischer Möbelantrieb
PCT/EP2010/060144 WO2011006931A1 (fr) 2009-07-14 2010-07-14 Dispositif d'actionnement de meuble à moteur électrique à sécurité intégrée

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EP2454747A1 EP2454747A1 (fr) 2012-05-23
EP2454747B1 true EP2454747B1 (fr) 2017-11-29

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EP10734967.2A Not-in-force EP2454747B1 (fr) 2009-07-14 2010-07-14 Système d'entraînement pour meuble, à commande par moteur électrique, muni d'un système de sécurité fonctionnant dès l'apparition de la premiere erreur
EP10734966.4A Not-in-force EP2454746B1 (fr) 2009-07-14 2010-07-14 Système d'entraînement pour meuble, à commande par moteur électrique, muni d'un systéme de sécurite fonctionnant dès l'apparition de la première erreur

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US (2) US9230764B2 (fr)
EP (2) EP2454747B1 (fr)
JP (2) JP5615358B2 (fr)
CN (2) CN102498537B (fr)
AU (2) AU2010272518B2 (fr)
DE (1) DE202009005020U1 (fr)
DK (2) DK2454747T3 (fr)
WO (2) WO2011006931A1 (fr)

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CN102484017B (zh) 2015-12-02
US9230764B2 (en) 2016-01-05
AU2010272518A1 (en) 2012-03-01
US20120194106A1 (en) 2012-08-02
JP2012533283A (ja) 2012-12-20
WO2011006931A1 (fr) 2011-01-20
CN102498537B (zh) 2014-12-17
CN102498537A (zh) 2012-06-13
DK2454746T3 (en) 2017-02-13
EP2454746A1 (fr) 2012-05-23
JP5896899B2 (ja) 2016-03-30
EP2454746B1 (fr) 2016-11-02
DK2454747T3 (en) 2018-02-26
US8981679B2 (en) 2015-03-17
DE202009005020U1 (de) 2010-12-16
EP2454747A1 (fr) 2012-05-23
CN102484017A (zh) 2012-05-30
JP5615358B2 (ja) 2014-10-29
US20120206070A1 (en) 2012-08-16
AU2010272519B2 (en) 2015-11-19
JP2012533161A (ja) 2012-12-20
AU2010272519A1 (en) 2012-02-09
WO2011006930A1 (fr) 2011-01-20
AU2010272518B2 (en) 2015-06-11

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