EP2677899B1 - Mécanisme d'entraînement à moteur électrique pour meubles - Google Patents

Mécanisme d'entraînement à moteur électrique pour meubles Download PDF

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Publication number
EP2677899B1
EP2677899B1 EP12705686.9A EP12705686A EP2677899B1 EP 2677899 B1 EP2677899 B1 EP 2677899B1 EP 12705686 A EP12705686 A EP 12705686A EP 2677899 B1 EP2677899 B1 EP 2677899B1
Authority
EP
European Patent Office
Prior art keywords
supply device
auxiliary
network
electric
furniture drive
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
EP12705686.9A
Other languages
German (de)
English (en)
Other versions
EP2677899A1 (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 EP2677899A1 publication Critical patent/EP2677899A1/fr
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    • 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
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
    • A47B9/00—Tables with tops of variable height
    • A47B9/04—Tables with tops of variable height with vertical spindle
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
    • A47B2200/00—General construction of tables or desks
    • A47B2200/0035—Tables or desks with features relating to adjustability or folding
    • A47B2200/005—Leg adjustment
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
    • A47B2200/00—General construction of tables or desks
    • A47B2200/0035—Tables or desks with features relating to adjustability or folding
    • A47B2200/005—Leg adjustment
    • A47B2200/0056—Leg adjustment with a motor, e.g. an electric motor
    • 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
    • A61G2203/00—General characteristics of devices
    • A61G2203/10—General characteristics of devices characterised by specific control means, e.g. for adjustment or steering
    • A61G2203/12—Remote controls
    • 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 an electromotive furniture drive with a power supply device for adjusting movable furniture components relative to each other.
  • Such electromotive furniture drives are known in different embodiments. They are designed as linear drives with a linearly adjustable output member or as rotary drives with a rotating output member and have proven themselves in practice.
  • the linear drives have one or a number of electric motors, wherein each motor is followed by a Drehierereduziergetriebe and another the Drehierereduziergetriebe downstream transmission, for example in the form of a threaded spindle gear, which generates a linear movement of the driven member from the rotational movement of the motor.
  • the rotary drives have at least one speed reduction gear connected downstream of the respective electric motor, with the last gear element forming the driven element.
  • the output member of the respective electromotive furniture drive communicates with a fixed and / or with a movable furniture component, so that during an operation of the electric motor, the movable furniture components are adjusted relative to each other.
  • the furniture can be designed as a slatted base, work table, bed, lying surface, treatment couch, hospital or nursing bed, as well as a lifting device for persons such as lifters or patient lifts.
  • auxiliary voltage source which provides an electrical energy for switching or at least initiating a changeover from a switched-off idle state to a switched-on operating state for triggering the switching signals.
  • the DE 41 39 647 A1 describes batteries, rechargeable batteries or electrolytic capacitors as auxiliary voltage sources, which are either charged manually or recharged by switching on the entire furniture drive control. If a recharge or a change of the batteries is not timely, the system can not be restarted again, whereby the mains isolation remains in the off state. Solutions in the form of manual emergency actuations have been specified.
  • the DE 201 22 535 discloses an electromotive furniture drive with a mains isolation device by means of a drive unit is switched off stress.
  • a manual switch is provided, which can be stored on a receiving device, which can be detected by sensor means, whether the manual switch is in the storage position.
  • a capacitor whose voltage is measured. If the voltage falls below a predetermined minimum value, the mains isolation is deactivated to recharge the capacitor.
  • EP 0 792 533 B1 in the form of an emergency charging system, which is charged by a kind of power supply, an auxiliary capacitor with a small capacity, which is used to initiate the switching operation of a semiconductor circuit breaker (triac) use.
  • the emergency charging system is always connected to the mains and actively switched on. When activated, the readiness for operation only becomes apparent after a relatively long waiting time of approx. 10 to 20 seconds. Then, the entire electromotive furniture drive must first be put into operation to charge a working capacitor used as an auxiliary power source.
  • the power-off switch e.g. apartment
  • the power-off switch is inserted between the housing installation and the public power grid and detects whether an electrical consumer, e.g. Light, switched on or off.
  • an electrical consumer e.g. Light
  • With the housing installation is meant the electrical wiring of the apartment for the mains voltage.
  • the mains isolator disconnects the residential installation from the public power grid.
  • the mains switch generates a test voltage, e.g. a harmless DC voltage of certain height and switches this on the apartment installation. If a consumer is now switched on, this detects the test voltage and causes the mains isolator to reconnect the residential installation to the public power grid.
  • a power switch can also be used in areas or in each case for a room.
  • the invention is therefore based on the object to provide an improved electromotive furniture drive with a mains isolation device.
  • the electromotive furniture drive has an auxiliary power storage, which is decoupled from the power supply device, connected to the auxiliary supply device and can be charged by the auxiliary supply device.
  • an electromotive furniture drive with a power supply means of a manual operation and with a power cut-off device, which is switchable from an off state to an on state and back, provided for adjusting movable furniture components relative to each other
  • the electromotive furniture drive comprises at least one reversible electric motor, each Electric motor is followed by a speed reducer and wherein each Drehierereduziergetriebe another transmission is connected downstream
  • the power supply device has a network connection, which is connected by the mains isolation device connected to the network, wherein the power supply device transforms the mains side input voltage into at least one output side low voltage, and an isolating transformer or a transmission unit for galvanic isolation between the
  • the power supply device comprises an auxiliary supply device, at least one power disconnect switch, which is opened in the off state and closed in the on state, and a chargeable auxiliary power storage.
  • the electromotive furniture drive has a decoupled from the power supply auxiliary power storage, which is connected to the auxiliary supply device and can be charged by
  • the mains isolation device has a further state ready for operation, in which the auxiliary supply device is connected to the network and the mains disconnect switch is open. This results in a lower consumption of electrical energy.
  • the mains isolation device cooperates with all higher-level power isolators and has an auxiliary voltage source in the form of the auxiliary supply device for reconnecting the mains disconnector, wherein an auxiliary power storage is provided, which is designed as a capacitor of high capacity. It is arranged galvanically isolated from the grid and is charged by the auxiliary supply device separately and independently of the power supply device, ie of a main transformer.
  • the auxiliary supply device is a transformer, a miniature switching power supply, an active optocoupler with a photovoltaic output, a light bulb solar cell unit, etc., wherein these from the Auxiliary power supply device formed for charging the auxiliary power memory by pressing the manual control or other switch, as will be explained in more detail below by switch 2 or switch 3, is activated.
  • the auxiliary power memory provides a stored auxiliary power, with which the mains isolation device can be switched from the switched-off state into the further state ready for operation. For this purpose, only a small amount of power has to be expended, since the mains disconnector is not activated or fed by the auxiliary power storage.
  • the auxiliary power storage is connectable to a coupling device, wherein the coupling device is provided for connecting the auxiliary supply device to the network.
  • the auxiliary supply device is switched on by means of low power, which in turn provides the power required for switching the mains circuit breaker.
  • the auxiliary supply device comprises in one embodiment a transformer or a high-frequency transformer.
  • the coupling device with a switch for example in the form of an electromechanical switch or a semiconductor switch or another coupling element is provided, which connects the network electrically conductively connected to at least one terminal of the primary winding of the transformer of the auxiliary supply device.
  • the auxiliary supply device has another transformer, for example a high-frequency transformer, an electronic transformer or a voltage converter, which is operated by a clock-generating control component of a DC link with a high switching frequency.
  • the intermediate circuit consists essentially of a high-frequency semiconductor switch, which is driven at high frequency and energy from the network to at least one terminal of the primary winding to the high-frequency transformer, and a control module, which drives the high-frequency semiconductor switch via its output, and a signal feedback, which, for example, as Optocoupler is formed and is electrically connected to the input of the control module.
  • a first embodiment of the coupling device has a switch, for example in the form of an electromechanical switch or a semiconductor switch or another coupling element, which is arranged on the intermediate circuit or in the intermediate circuit.
  • the switch of the coupling device may be electrically conductively connected to one terminal of the high-frequency switch and / or to one terminal of the control module and / or to one terminal of the signal feedback and / or to one terminal of the optocoupler of the signal feedback.
  • a second embodiment of the coupling device to a voltage generation, which is formed for example by an output of a photovoltaic coupler. In this case, this voltage generation is electrically connected to the supply terminals of the control module of the intermediate circuit. In a particularly advantageous manner, activation or switching on of the auxiliary supply device by the coupling device is thus possible.
  • the auxiliary supply device can supply even consumers such as switches / radio and infrared receiver and status indicators with energy, this being ready in the further state of the power supply device is possible without the power supply device is turned on with higher power consumption.
  • auxiliary power storage also consumers such as switches / radio and infrared receiver, Verstellweger terminatessysteme, Provide power to microprocessors and status indicators, regardless of the operating conditions of the power supply device and / or the power supply device and / or the auxiliary supply device.
  • the coupling device has a galvanic isolation. This is possible, for example, by means of an optocoupler.
  • a bridging device is provided parallel to the coupling device, which bridges the coupling device in a first-time power connection and connects the auxiliary supply device to the network for a predetermined time for charging the auxiliary power memory.
  • the auxiliary supply device can be connected by means of a charging switch regularly and / or in dependence on a state of charge of the auxiliary power storage with the network. This is a constant operational readiness of the electromotive furniture drive achieved with the lowest power consumption.
  • the auxiliary supply device is designed as a miniature switching power supply.
  • the miniature switching power supply can be designed as a long-range miniature switching power supply, so that all types of internationally known network voltages and network frequencies can be operated on it.
  • the auxiliary supply device is provided with a switchable and / or variable initial load, which is designed and temporarily connectable to a power cable, that a clear detection of the switched auxiliary supply device is possible by a higher-level mains isolation. In this way, a function of the electromotive furniture drive with higher-level power switches is possible.
  • the auxiliary power storage is arranged in the power cut-off device and / or the motor control.
  • the auxiliary power memory for example, is arranged on the board on which the associated wiring to the control lines are provided.
  • the motor control and / or the manual control can be provided with an auxiliary power source, which can be eg a battery, an accumulator or / and a capacitor. This also makes an emergency lowering function possible.
  • the electromotive furniture drive can also meet the demand for low power consumption of devices in stand-by mode.
  • FIG. 1 shows an electromotive furniture drive 1 with a power supply device 5 and a mains isolation device. 9
  • the electromotive furniture drive 1 in this embodiment is a so-called linear drive 2, and the power supply device 5 is e.g. formed with a isolation transformer, rectifier and filter circuit or as a switching power supply.
  • the linear drive 2 has, depending on the direction of rotation of an electric motor, not shown, a retractable and extendable lifting tube 3, at its free end a connection part in the form of a clevis 4 is mounted.
  • Another connection part in the form of a further fork head 4 is fastened to the housing of the linear drive 2.
  • the respective connection part is in a manner not shown in each case with a furniture component in connection, so that move the connected to the linear drive 2 furniture components relative to each other during operation of the electric motor.
  • the mains isolation device 9 is as shown in FIG. 1 connected via a power cord 10 with a power plug 8, wherein in another and not shown embodiment of the power plug 8 to the power cut-off device 9 can be arranged.
  • the mains isolation device 9 may be integrated in the power supply device 5. It should be noted that then the power supply device 5 as shown in FIG. 1 is provided with an enveloping housing, so that the power plug 8 can be attached to the housing or formed.
  • the mains isolation device 9 is electrically connected to the power supply device 5 via a power line 11.
  • An output of the power supply device 5 is connected via a supply line 12 to a motor control 6, to which the linear drive 2 (also representative of more than one linear drive 2) is connected to a motor line 13.
  • mains isolation device 9 is additionally connected via the power supply device 5 to the motor control 6 by control lines 15 and 16 and a charging line 17.
  • control lines 15 and 16 and a charging line 17 The functions of these lines 15, 16 and 17 will be explained in more detail below.
  • a manual control 7 is connected in a wired form with a control line 14, wherein according to the illustration FIG. 1 the manual control 7 has two pushbuttons.
  • the handset 7 is coupled via a wireless transmission link to the engine control 6 and transmits radio waves or infrared light waves for controlling the at least one electric motor, ie linear drive 2 to the engine control 6.
  • FIG. 1 is in a first embodiment, the manual control 7 with the motor controller 6 in conjunction, wherein the motor controller 6 is designed as a relay control with relay switches and / or as a semiconductor circuit with semiconductor switches.
  • the manually operable push-button switch of the manual control 7 switch the control current of the relay switch or the semiconductor switch, wherein the circuit breaker of the relay switch or the semiconductor switch switch the high motor current of the linear actuator 2.
  • the manual control 7 with the motor control 6 in connection which connects the supply line 12 of the power supply device 5 and a motor line 13 of the electric motor of the linear drive 2 and the electrical lines of the manually operable push-button of the hand control 7 together.
  • the contacts of the manually operable push-buttons of the manual control 7 designed as a circuit breaker and switch at keystroke the high motor current of the electric motor of the linear actuator.
  • the power supply device 5 is inserted into the housing of the linear drive 2 or attached thereto, wherein the linear drive 2 can be constructed in a manner not shown in the manner of a double drive, which at least one motor, but preferably two Engines motors in a common housing.
  • the power plug 8 passes via the power cord 10, the input-side mains voltage first to the power cut-off device 9, which will be described in more detail below.
  • the mains isolation device 9 has three states. In a first state, the mains isolation device 9 is switched off, in a second state, it is ready for operation and in a third state, the mains isolation device 9 is turned on.
  • the mains isolator 9 If the mains isolator 9 is turned on, e.g. activated by an actuated manual operation, it connects the power cord 10 via the power line 11 to the power supply device 5, which outputs a low voltage in the form of a DC voltage as the operating voltage on the secondary side and forwards it to the motor controller 6.
  • the operating voltage is e.g. in the amount of about 29 V and is used in an operating state of the power supply device 5 for operating the motor controller 6 and the linear drive. 2
  • FIG. 2 shows a schematic block diagram of an embodiment of the furniture drive after FIG. 1 ,
  • Power lines or paths are indicated by thick lines and control lines or - paths are indicated by thin lines.
  • the mains isolation device 9 comprises a power disconnect switch 20 with a control switch 20a; an auxiliary supply device 21 (also referred to as an auxiliary voltage source); and a coupling device 24.
  • the power cut-off device 9 also has a charging circuit 26 in addition.
  • the power disconnect switch 20 is executed here two-pole with closing contacts. It is in this case a two-pole network relay, which is controlled by the control switch 20a. That is, in the first and second states (turned off and ready) of the power cut-off device 9 is the power disconnect switch 20 open, in the third state (turned on) of the power cut-off device 9, the power disconnect switch 20 is closed.
  • the auxiliary supply device 21 is here equipped with a transformer 22 and a rectifier 23 and provides an auxiliary power supply at its output A on the one hand to supply the power disconnect switch 20 and the other to supply the charging circuit 26 is available.
  • the auxiliary supply device 21 is formed in one embodiment as a small switching power supply to the transmitter 22.
  • the transformer 22 is a high-frequency transformer.
  • the auxiliary supply device 21 is connected directly to an input E with a line of the power cable 10, wherein the other line of the power cable 10 via the coupling device 24 to the input E of the auxiliary supply device 21 is connectable.
  • the auxiliary power supply 21 is turned off.
  • the auxiliary power supply 21 is turned on, i. connected to the power cord 10 and thus to the mains voltage of a connected electrical supply network.
  • the auxiliary supply device 21 is formed with an EI core transformer or toroidal transformer as a transformer 22.
  • the output A and its provided auxiliary supply voltage is galvanically isolated from the electrical supply network due to the transformer 22.
  • the auxiliary supply device 21 is switched on and off.
  • the coupling device 24 has a control element 24a and an interacting with this of the control element 24a galvanically isolated coupling element 24b.
  • the coupling device 24 is an optocoupler, wherein the control element 24a is a lighting means, e.g. an LED is, and the coupling element 24b is designed as a photosensitive switching transistor with a corresponding dielectric strength with respect to the mains voltage.
  • the coupling element 24b is arranged on or in an intermediate circuit of the auxiliary supply device 21 described above, if this is designed as a switching power supply.
  • the charging circuit 26 serves to provide a charging voltage for an auxiliary power storage 27, which is formed in this embodiment as a high-capacitance capacitor, e.g. a so-called gold cap capacitor. Its function will be explained in more detail below.
  • the auxiliary power storage 27 is charged in the second and third states (ready and turned on) of the power cut-off device 9 via the charging circuit 26 from the auxiliary supply device 21.
  • the auxiliary power storage 27 is disposed in the engine controller 6.
  • the motor control 6 comprises a control unit 6a, to which the linear drive 2 and the manual control 7 are connected, as well as a control signal distributor 28 and a charging switch 29.
  • the auxiliary power storage 27 is connected to an output A with an auxiliary supply line 18 and a common line 19, e.g. a ground or negative lead, connected to the control signal distributor 28.
  • the common line 19 is also connected to the control unit 6a and via the control signal distributor 28 to the control switch 20a and the coupling device 24.
  • the manual operation 7 is connected via a manual control line 14a to the control line 14 to the control unit 6a and also connected via a trigger line 14c to the control signal distributor 28.
  • a remote control receiver 30, e.g. for radio / infrared control be coupled via a remote control line 14b to the control line 14.
  • the control signal distributor 28 is connected to the control switch 20a of the power disconnect switch 20 of the mains disconnecting device 9 via a control line, the control switching line 15 (see also Fig. 1 ) and via a further control line, the coupler line 16 is connected to the control element 24a of the coupling device 24.
  • the charging switch 29 is connected to the signal distributor 28 in this embodiment.
  • the charging switch 29 is further connected to a measuring terminal MA of the auxiliary power storage 27.
  • the control signal distributor 28 serves to separate the different control lines 14, 15, 16 so that no repercussions can occur on other units connected thereto. This can e.g. be effected by means of diode gate. Other versions are of course possible.
  • an operating button of the manual control 7 is actuated. Since the power disconnect switch 20 is opened, the power supply device 5 and the motor controller 6 are de-energized. In this first state, the auxiliary power storage 27 via the auxiliary supply line 18 and the signal distributor 28, a low electrical power available, by means of which by the operated manual control 7 and the signal distributor 28, first the control 24a of the coupling device 24 is sufficiently activated to turn on the coupling element 24b , As a result, the auxiliary supply device 21 is switched on, and thus the mains isolating device 9 changes from the first state to the second state ready for operation.
  • the mains cut-off device 9 is switched off ready for operation in the second state by actuating the handset 7 from the first state by the electrical energy stored in the auxiliary power storage 27.
  • the low power of the auxiliary power storage 27 is sufficient, so that the auxiliary power storage 27 may be formed correspondingly small.
  • control signals are applied neither to the control switch 20a nor to the coupling device 24. This opens the power disconnect switch 20 and the coupling element 24b.
  • the mains isolation device 9 switches back to the first state switched off. This downshift may be delayed by means of a time delay in an embodiment not shown.
  • the remote control receiver 30 may also trigger the above-described operations.
  • the remote control receiver has at its output switches, for example in the form of transistor switches, on, which are arranged equivalent to the triggering by a keystroke of the manual control 7.
  • the charging switch 29 serves to cause an automatic charging of the auxiliary power storage 27.
  • the charging switch 29 may have a timing circuit which causes a regular charging.
  • the charging switch 27 is caused to cause charging of the auxiliary power storage 27 by a voltage request of the auxiliary power storage 27. In this case, the voltage of the auxiliary power storage 27 at the measuring tap MA is compared with a value. As soon as this value is reached, the auxiliary power storage 27 is charged.
  • Such charging which is initiated regularly or when a voltage limit value is reached, occurs in that the charging switch 29 has a switching output, for example in the form of a transistor switch, and a control voltage via the control signal distributor 28 selectively outputs a control signal to the coupling device 24 via the coupler line 16.
  • This causes the auxiliary supply device 21 to be turned on. That is, the mains isolation device 9 switches from the first state turned off in the second state ready, and ready for operation only in this second state.
  • the third state is not turned on, since this is not necessary to load the auxiliary power memory 27, because the auxiliary power memory 27 is charged via the switched by means of the coupling device 24 auxiliary supply device 21.
  • This charging process takes only a short period of time, since the auxiliary power storage 27 only requires such a charge, which is necessary for the activation of the coupling device 24.
  • the charging process can be time-controlled or voltage-controlled via the measuring tap MA. If the auxiliary power memory 27 is recharged, the mains disconnecting device 9 changes from the second state ready for operation back to the first state turned off.
  • the input E of the auxiliary supply device 21 may be provided with a switchable and / or variable initial load, which trained so and is temporarily connectable to the terminals of the power cord 10 that a clear detection of the switched-auxiliary device 21 through the parent mains isolation is possible, which is not shown here.
  • the temporarily switchable initial load can be switched by, for example, a transistor switch or by the coupling device 24 or by a further coupling device, not shown.
  • the primary coil of the transformer 22 is designed as an initial load, because in one embodiment it has a relatively low internal resistance.
  • the transformer 22 may be formed as El-core transformer.
  • an electrical resistance is connected in parallel to the primary coil of the transformer 2 or the transformer, not shown, of the auxiliary supply device 21.
  • the coupling element 24b of the coupling device 24 is in the in FIG. 2 illustrated embodiment with a bypass circuit 25 connected in parallel.
  • the bypass circuit 25 is used in an embodiment as an automatic switch at a first connection of the electromotive furniture drive 1 to the electrical supply network for immediate and automatic charging of the auxiliary power storage 27 by the mains isolation device 9 as described above by connecting the auxiliary supply device 21 with the power cord 10 from the first State is switched off in the second state ready, wherein the auxiliary power storage 27 is charged. As described above, this charging operation takes place in a very short time, so that the electromotive furniture drive 1 can be moved within a few seconds, e.g. can be used within 2 or 3 seconds.
  • the bypass circuit 25 may according to Fig. 3 with a bridge rectifier 25a and a timer 25b, here an RC element, be formed.
  • Current flows to the auxiliary supply device 21 when the mains voltage is applied for a short time.
  • the coupling element 24b of the coupling device 24 is thus bridged for a certain time, the duration of the time depending on the structural design of the RC element and fractions of a second up to to a few seconds, for example up to 10 seconds.
  • the resistance of the RC element is designed as a high-resistance resistor, such that the current flow through the resistor after application of the mains voltage is very small, thus considered negligible, and thus practically only for a short time current flows to the auxiliary supply device 21, when mains voltage is applied.
  • Fig. 4 can also be provided a PTC element which is parallel to the coupling element 24b firstly current is permeable due to a low resistance, but then due to the current assumes a high resistance and practically the Power interrupts.
  • the PTC element can persist in this state after the transition to the state of high internal resistance and only falls back to the original state when the mains voltage is removed.
  • Other configurations of a PTC element have an alternating character, with the internal resistance initially increasing after a certain period of time after the mains voltage is applied, and later the internal resistance alternating between a maximum value and a smaller value.
  • the bypass circuit 25 may also include a wiper circuit and / or a timer.
  • a manually operated button can also be provided in order to be able to charge manually.
  • FIG. 2 Another embodiment of the electromotive furniture drive 1 includes in accordance with the invention a bridging circuit 25 or another bridging circuit 25 according to the manner described above and is according to the FIGS. 3 and 4 provided with the terminals a and b, wherein the terminals a and b with the terminals 31 and 32 as shown in FIG FIG. 2 are connected.
  • the terminal 31 is arranged in a line between the coupling element 24 b and the auxiliary supply device 21.
  • the terminal 32 is directly connected to another line of the network, wherein at the terminal 32 during operation of the electromotive furniture drive 1, the second power potential, for example, the potential of the neutral conductor or the center conductor, is applied.
  • Another embodiment of the electromotive furniture drive 1 has a bridging circuit 25 or another bridging circuit 25, which at the terminals 32 and 33 as shown in FIG FIG. 2 connected.
  • the first power potential for example, the grid potential of the phase to.
  • the function of the bypass circuit 25, which is connected with its terminals a and b at the terminals 31 and 32 and / or at the terminals 32 and 33, is as follows: Starting from the de-energized state of the system, the bypass circuit 25 at the moment of applying a Mains voltage electrically continuous and conductive and acts at the moment of initial commissioning as a consumer.
  • the RC element or the PTC element is designed such that the test voltage of a higher-level mains isolation, which can also be described as a so-called home mains isolation, at the terminals 31, 32nd and / or 32, 33 connected bridging circuit 25 detected as a consumer and then turns on. This can be ensured in accordance with the invention that the electromotive furniture drive 1 described above can be operated smoothly with any design of a parent power cut.
  • auxiliary power source may be, for example, a battery / rechargeable battery / a capacitor and also serve for emergency lowering.
  • the coupling device 24 may e.g. also be a photovoltaic optocoupler. Further embodiments are conceivable, such as relay, coil / Hall sensor, lamp LDR, coil with primary and secondary resonant circuit, miniature transformer with upstream sine wave generator, etc. In a preferred embodiment of the coupling device 24, this has a control 24a and a coupling element 24b, which are galvanically separated from each other. In a simplified embodiment of the coupling device 24, this is formed for example by a semiconductor switch, wherein the control element 24a and the coupling element 24b have a common terminal.
  • auxiliary supply device 21 is designed as a switched-mode power supply, its control circuit can also be connectable to the network by means of a coupling device via a suitable voltage regulator circuit.
  • the power disconnect switch 20 may also include semiconductor switches, e.g. Triac, MOSFET.
  • a charging of the auxiliary power storage 27 can also be done for example via active optocouplers, wherein the auxiliary supply means 21 feeds the optocoupler and its photovoltaic element, the charging power to the auxiliary power storage 27 supplies.
  • Other couplings are of course possible.

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  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Nursing (AREA)
  • Remote Monitoring And Control Of Power-Distribution Networks (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Claims (12)

  1. Mécanisme d'entraînement de meuble électromotorisé (1) comprenant un dispositif d'alimentation en énergie (5), un actionneur manuel (7) ainsi qu'un dispositif de déconnexion du réseau (9) qui peut être commuté d'un état hors circuit à un état en circuit et inversement pour permettre le réglage d'éléments de meuble mobiles les uns par rapport aux autres,
    le système d'entraînement de meuble à moteur électrique (1) comprenant au moins un moteur électrique dont le sens de rotation peut être inversé, à la suite de chaque moteur électrique étant monté un réducteur de vitesse, et à la suite de chaque réducteur de vitesse étant montée une autre transmission,
    le dispositif d'alimentation en énergie (5) comprenant un branchement sur le réseau qui peut être relié au réseau par le dispositif de déconnexion du réseau (9), le dispositif d'alimentation en énergie (5) transformant la tension d'entrée côté réseau en au moins une basse tension côté sortie, ainsi qu'un transformateur de séparation ou une unité de transmission pour permettre une séparation galvanique entre le côté entrée relié au réseau et le côté sortie délivrant une basse tension pour permettre l'actionnement du système d'entraînement de meuble à moteur électrique (1), le dispositif de déconnexion du réseau (9) comprenant un dispositif d'alimentation auxiliaire (21), au moins un commutateur de séparation du réseau (20) qui est ouvert à l'état hors circuit et fermé à l'état en circuit et un accumulateur de puissance auxiliaire (27) pouvant être chargé,
    caractérisé en ce que
    l'accumulateur de puissance auxiliaire (27) est découplé du dispositif d'alimentation en énergie (5), relié au dispositif d'alimentation auxiliaire (21) et peut être chargé par le dispositif d'alimentation auxiliaire (21).
  2. Système d'entraînement de meuble à moteur électrique (1) conforme à la revendication 1,
    caractérisé en ce que
    le dispositif de déconnexion du réseau (9) peut fonctionner dans un autre état dans lequel le dispositif d'alimentation auxiliaire (21) est relié au réseau et le commutateur de séparation du réseau (20) est ouvert.
  3. Système d'entraînement de meuble à moteur électrique (1) conforme à la revendication 2,
    caractérisé en ce que
    l'accumulateur de puissance auxiliaire (27) fournit une puissance auxiliaire accumulée par laquelle le dispositif de déconnexion du réseau (9) peut être commuté de l'état hors circuit dans l'autre état.
  4. Système d'entraînement de meuble à moteur électrique (1) conforme à la revendication 3,
    caractérisé en ce que
    l'accumulateur de puissance auxiliaire (27) peut être relié à un dispositif d'accouplement (24) prévu pour permettre de relier le dispositif d'alimentation auxiliaire (21) au réseau.
  5. Système d'entraînement de meuble à moteur électrique (1) conforme à la revendication 4,
    caractérisé en ce que
    le dispositif d'accouplement (24) comporte une séparation galvanique.
  6. Système d'entraînement de meuble à moteur électrique (1) conforme à la revendication 4 ou 5,
    caractérisé en ce qu'
    il est prévu, monté en parallèle sur le dispositif d'accouplement (24), un dispositif de pontage (25) qui court-circuite le dispositif d'accouplement (24) lors d'une première connexion au réseau et relie le dispositif d'alimentation auxiliaire (21) au réseau pendant une durée prédéfinie pour permettre la charge de l'accumulateur de puissance auxiliaire (27).
  7. Système d'entraînement de meuble à moteur électrique (1) conforme à l'une des revendications précédentes,
    caractérisé en ce que
    le dispositif d'alimentation auxiliaire (21) peut être relié au réseau constamment par l'intermédiaire d'un interrupteur de charge (29) et/ou en fonction de l'état de charge de l'accumulateur de puissance auxiliaire (27).
  8. Système d'entraînement de meuble à moteur électrique (1) conforme à l'une des revendications précédentes,
    caractérisé en ce que
    le dispositif d'alimentation auxiliaire (21) est réalisé sous la forme d'un élément de réseau miniature.
  9. Système d'entraînement de meuble à moteur électrique (1) conforme à au moins l'une des revendications précédentes,
    caractérisé en ce que
    le dispositif d'alimentation auxiliaire (21) comporte une charge initiale commutable et/ou variable qui est réalisée et peut être reliée temporairement à un câble de réseau (10) de façon à permettre une reconnaissance explicite de l'état en circuit du dispositif d'alimentation auxiliaire (21) un circuit de déconnexion du réseau principal.
  10. Système d'entraînement de meuble à moteur électrique (1) conforme à au moins l'une des revendications précédentes,
    caractérisé en ce que
    l'accumulateur de puissance auxiliaire (27) est monté dans le dispositif de déconnexion du réseau (9) et/ou la commande du moteur (6).
  11. Système d'entraînement de meuble à moteur électrique (1) conforme à au moins l'une des revendications précédentes,
    caractérisé en ce que
    la commande de moteur (6) et/ou l'actionneur manuel (7) est(sont) équipé(e)s d'une source d'alimentation en énergie.
  12. Système d'entraînement de meuble à moteur électrique (1) conforme à la revendication 11,
    caractérisé en ce que
    la source d'énergie auxiliaire est une batterie, un accumulateur, et/ou un condensateur.
EP12705686.9A 2011-02-25 2012-02-24 Mécanisme d'entraînement à moteur électrique pour meubles Not-in-force EP2677899B1 (fr)

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DE202011000443U DE202011000443U1 (de) 2011-02-25 2011-02-25 Elektromotorischer Möbelantrieb
PCT/EP2012/053172 WO2012113912A1 (fr) 2011-02-25 2012-02-24 Mécanisme d'entraînement à moteur électrique pour meubles

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EP2677899A1 EP2677899A1 (fr) 2014-01-01
EP2677899B1 true EP2677899B1 (fr) 2017-06-14

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DE102012107482A1 (de) * 2012-08-15 2014-02-20 Dewertokin Gmbh Netzgebundene Stromversorgungseinheit
DE202014101452U1 (de) * 2014-03-27 2015-07-01 Dewertokin Gmbh Elektromotorischer Möbelantrieb
DE102014106544B4 (de) * 2014-05-09 2019-06-19 Ferdinand Lusch Gmbh & Co. Kg Sitzmöbel mit motorischem Antrieb
US11805902B2 (en) 2019-04-25 2023-11-07 Ergotron, Inc. Height adjustable workstation with zero idle power

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DE4139647A1 (de) 1991-12-02 1993-06-03 Koch Dietmar Anordnung zur netzfreischaltung von steuereinrichtungen
IT1272753B (it) * 1993-10-27 1997-06-26 Ciar Srl Sistema di alimentazione particolarmente per attuatori lineari per letti o divani con testate e/o pediera ad angolazione variabile.
DE4400657C1 (de) * 1994-01-12 1995-03-09 Sonetta Gmbh Anordnung für die Netzfreischaltung einer Steuereinrichtung
WO1995023450A1 (fr) 1994-02-28 1995-08-31 Linak A/S Systeme d'interruption du courant de secteur de dispositifs consommateurs de courant tel que des actuateurs
DE10012050B4 (de) * 2000-03-14 2004-02-26 OKIN Gesellschaft für Antriebstechnik mbH & Co. KG Anordnung zum Verstellen von beweglichen Möbelteilen
DE20113125U1 (de) * 2001-08-14 2002-02-14 Dewert Antriebs- und Systemtechnik GmbH & Co KG, 32278 Kirchlengern Netzfreischaltung für Sitz- und Schlafmöbel
DE20122535U1 (de) * 2001-12-21 2006-03-02 Cimosys Ag Elektromotorischer Möbelantrieb
WO2010054656A1 (fr) * 2008-11-13 2010-05-20 Linak A/S Article de mobilier à réglage électrique et notamment table, lit ou fauteuil inclinable
DE102010016406A1 (de) * 2010-04-12 2011-10-13 Vibradorm Gmbh Schaltungsanordnung zum Einschalten einer über Relaiskontakte mit Anschlüssen für ein elektrisches Versorgungsnetz verbindbaren Verbrauchers

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DE202011000443U1 (de) 2012-05-29
WO2012113912A1 (fr) 2012-08-30
EP2677899A1 (fr) 2014-01-01
CN203789529U (zh) 2014-08-27

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