EP1556568A1 - Actionneur pour unites mobiles de vehicules automobiles - Google Patents

Actionneur pour unites mobiles de vehicules automobiles

Info

Publication number
EP1556568A1
EP1556568A1 EP03750588A EP03750588A EP1556568A1 EP 1556568 A1 EP1556568 A1 EP 1556568A1 EP 03750588 A EP03750588 A EP 03750588A EP 03750588 A EP03750588 A EP 03750588A EP 1556568 A1 EP1556568 A1 EP 1556568A1
Authority
EP
European Patent Office
Prior art keywords
electric motor
actuator according
actuator
electrical power
blocking position
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
EP03750588A
Other languages
German (de)
English (en)
Other versions
EP1556568B1 (fr
Inventor
Stefan Armbruster
Uwe Reddmann
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.)
Kiekert AG
Original Assignee
Kiekert AG
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 Kiekert AG filed Critical Kiekert AG
Publication of EP1556568A1 publication Critical patent/EP1556568A1/fr
Application granted granted Critical
Publication of EP1556568B1 publication Critical patent/EP1556568B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B81/00—Power-actuated vehicle locks
    • E05B81/24—Power-actuated vehicle locks characterised by constructional features of the actuator or the power transmission
    • E05B81/25—Actuators mounted separately from the lock and controlling the lock functions through mechanical connections
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B81/00—Power-actuated vehicle locks
    • E05B81/12—Power-actuated vehicle locks characterised by the function or purpose of the powered actuators
    • E05B81/20—Power-actuated vehicle locks characterised by the function or purpose of the powered actuators for assisting final closing or for initiating opening
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B81/00—Power-actuated vehicle locks
    • E05B81/54—Electrical circuits
    • E05B81/56—Control of actuators
    • E05B81/62—Control of actuators for opening or closing of a circuit depending on electrical parameters, e.g. increase of motor current

Definitions

  • the invention relates to an actuator for movable motor vehicle units such as tailgates, sliding doors, door locks, etc., with an electric motor, an actuating element and a remindstelleinrichtu g for the actuating element and / or the electric motor and / or a coupling unit between the actuating element and the motor vehicle unit, wherein the electric motor moves the actuator against the force of the return device against a stop in a blocking position.
  • a generic actuator according to EP o 147 549 A2 is an electric central locking device for motor vehicles. At least one electrical position indicator ensures that the actuator is switched off.
  • a flap hinge arrangement from the DB 19945 755 AI, in which, with the help of the electric motor, a coupling element is brought into a releasable positive or non-positive connection when energized. After the electric motor is switched off, the reset device in the form of a reset spring ensures that the disengaged state is restored.
  • DE 197 10 834 A1 discloses a device and a method for actuating a locking element.
  • the locking element is led out of a housing and can be activated by control signals from an electric motor.
  • One with the locking element cooperating position sensor is arranged in the housing such that the position sensor can generate an electrical position signal corresponding to a current position of the locking element in the housing.
  • a control device for controlling operating states of the electric motor in response to the position signal is also provided.
  • EP 1 096 087 A2 discloses a motor vehicle door lock in which the drive is energized at least within a time interval required for adjusting the drive device and the drive is mechanically blocked within or at the end of the time interval. The current supply to the drive and thus its torque and / or speed is reduced along a ramp.
  • the prior art cannot satisfy all points.
  • the application of electrical power to the electric motor is maintained as long as this state must be set. This leads to increased power consumption and excessive heating, which in the worst case corresponds to damage to the electric motor, but in almost all cases at least to a reduction in its service life.
  • the invention seeks to remedy this.
  • the invention is based on the technical problem of further developing an actuator of the configuration described in the introduction in such a way that damage to the electric motor can be reliably avoided with reduced energy consumption.
  • a generic actuator is characterized in accordance with the invention in that after an adjustable delay time - after taking the blocking position - the electrical power supplying the electric motor is reduced to a value just ensuring the blocking position of the adjusting element.
  • the control element may act directly on the motor vehicle unit to be moved, i. H.
  • the actuating element may be integrated in a motor vehicle door lock and for example to provide central locking, as is the case in EP 0 147
  • control element can also work on the optional clutch unit interposed between the control element and the motor vehicle unit.
  • the electric motor then ensures that when the current is supplied, a coupling element establishes a positive and / or non-positive connection between the actuating element and the motor vehicle unit when the actuating element reaches the stop.
  • the stop can also be formed by a mating coupling element.
  • the reset device may be assigned to the clutch unit and ensures that the at least one movable clutch element is returned to the disengaged state after the electric motor has been switched off, as is basically done in the context of DE 199 45 755 AI.
  • the blocking position of the adjusting element is determined and maintained by means of a position sensor in and / or on the adjusting element.
  • This position sensor may be a speed sensor in and / or on the electric motor and / or a displacement sensor in and / or on the control element.
  • the speed sensor can be used, for example, to determine whether and in which direction of rotation the electric motor is moving.
  • a power consumption device may also function as a position sensor, which determines and evaluates the electrical power supplied to the electric motor over time. In particular, conclusions can be drawn from this regarding the blocking position, which corresponds to an increased power consumption.
  • a control unit In order to register and process the individual detected values, a control unit is generally provided which controls the electrical power acting on the electric motor as a function of input signals from the aforementioned position sensor. This occurs in particular after the delay time has elapsed, where the control unit ensures that this electrical power is successively reduced. This can be done along a linear course over time. In the context of the invention, it has however, it has been shown to be favorable to represent an almost exponential drop in performance over time.
  • the invention further proposes that the control unit forms a closed control loop together with the position sensor.
  • the values recorded by the position sensor are registered as a reference variable by the control unit and converted into electrical power as a control variable for the electric motor.
  • the regulation of the electrical power is now approximated to a holding value in the blocking position by continuously (exponentially) reducing the electrical power supplied to the electric motor until the position sensor registers a backward movement of the electric motor as a result of the unchanged reset device.
  • the electrical power is increased again until the actuating element again moves up to the stop against the force of the resetting device.
  • the electrical power is then reduced again until the hold value, which has been appoximized in this way, is reached after an adjustable period of cycles.
  • the delay time between reaching the blocking position and the reduction in the electrical power supplied to the electric motor is measured at values of less than 1 second. Because this period of time is sufficient to eliminate any elasticity to overcome in the entire drive chain and to achieve a defined position of the actuator.
  • the delay time may take values between 0.2 to 0.8 seconds, is preferably approximately 0.5 seconds.
  • the reset device is usually a return spring, although of course other media, such as. B. an air and / or hydraulic spring can be used.
  • an actuator for movable motor vehicle units is made available, in which the electrical power is successively reduced after reaching an blocking position of the adjusting element after an adjustable delay time (which can also be zero), significantly.
  • the blocking position is kept unchanged. This reduces the heating of the electric motor and at the same time prevents damage.
  • the service life increases and downtimes can be reduced to practically zero.
  • the essence of the invention is based on the knowledge that in order to achieve the blocking position of the actuating element and / or the motor vehicle unit connected to it, a multiple of the electrical power is required which is sufficient to hold the actuating element in this functional position following it .
  • the reasons for this include sliding friction forces to be overcome during the actuating movement, which no longer occur in the blocking position.
  • the reset device for example, a return spring to compress than to maintain this compressed state.
  • elasticities to be overcome in the blocking position during the actuating movement likewise only contribute to a reduced extent to the power consumption.
  • the electric motor is able to hold the actuating element in the sketched position with a much lower electrical output than it had to be applied beforehand for the actuating movement.
  • the actuating element actuates the coupling unit between the actuating element and the motor vehicle unit.
  • reduced electrical powers are required in order to keep the movable coupling element in the engaged position than is necessary for closing the coupling unit.
  • the adjustable delay time after reaching the blocking position ensures that the described power reduction for loading the electric motor is initiated after a short period of time.
  • this reduction in power is carried out by the control unit in a closed control loop and leads to an approximate holding value for the electrical power. This corresponds to a value for the electrical power that just ensures the blocking position of the control element. In this respect, an optimal value for the power application of the electric motor is achieved. This is where the main advantages can be seen.
  • the invention is explained in more detail below on the basis of a drawing illustrating only one exemplary embodiment. Show it:
  • Fig. 1 shows schematically the individual parts of the actuator according to the invention
  • FIG. 2 shows a power / time diagram in conventional operation (FIG. 2a) and the modification of the power consumption achieved by the invention (cf.
  • an actuator for movable motor vehicle units 1 is shown in the figures.
  • this may be a motor vehicle door lock 1, which is moved into the “unlocked” and “locked” positions by the actuator, in a similar manner to that described in US Pat. No. 4,358,718 is.
  • a tailgate or a tailgate hinge arrangement can also be acted upon with the aid of the actuator shown, as is the subject of DE 199 45 755 AI or also DE 199 60 373.
  • the actuator carries out linear adjusting movements in the direction of the double arrow, to be precise acted upon by an electric motor 2, against the force of a resetting device 3.
  • the reversing electric motor 2 drives an output shaft 4 with an output gear 5, which meshes with a spring gear 6, which in its
  • a return spring 3 or coil spring 3 Inside the reset device 3 carries in the form of a return spring 3 or coil spring 3. Rotations of the The electric motor 2 causes a threaded spindle rod 7 connected to the spring gear 6 to also be rotated, as a result of which a spindle nut 8 or an adjusting element 8 located on the spindle rod 7 performs the desired adjusting movements. If the spindle nut 8 is extended, this results in the coil spring 3 being compressed and building up restoring forces which move the spindle nut 8 (and the electric motor 2) back into their starting position after the action by the electric motor 2 has ceased.
  • the electric motor 2 now ensures that the spindle nut 8 or the actuating element 8 moves against a stop 9, namely within a period of time i or the actuating time.
  • the electric motor 2 is supplied with a constantly high electrical power after this blocking position has been reached, so that the corresponding position of the motor vehicle door lock 1 is maintained perfectly.
  • a position sensor 10 is integrated in the electric motor 2, is electrically connected to a control unit 11 and evaluates speed signals of the electric motor 2.
  • the position sensor 10 can also draw conclusions from the time profile of the electrical power P consumed by the electric motor 2
  • a coupling unit 12 between the actuating element 8 and the motor vehicle unit 1 which has a coupling element 12a connected to the actuating element 8 and movable with it, and a counter-coupling element 12b.
  • the counter-coupling element 12b which is stationary with respect to the coupling element 12a, functions like the stop 9 and ensures the connection of the actuating element 8 to the Motor vehicle unit 1 with the clutch unit 12 closed. Then mechanical movements from the electric motor 2 or another drive unit can be transmitted to the motor vehicle unit 1 via this connecting line 8, 12.
  • the control unit 11 now specifies the electrical power P supplied to the electric motor 2, specifically in the context of the invention in accordance with the time profile according to FIG. 2b. It can be seen that, depending on input signals from the position sensor 11, the electrical power P acting on the electric motor 2 is reduced after the delay time T 2 has elapsed, and successively along an exponential curve. This continues until a holding value P 2 of the electrical power is reached, specifically after a further period T 3 .
  • control unit 11 forms a closed control circuit together with the position sensor 10, the values recorded by the position sensor 10 being recorded as a reference variable by the control unit 11 and converted into the respective electrical power P as a control variable for the electric motor 2.
  • the regulation of the electrical power P is approximated to the aforementioned holding value P 2 , namely following an approximation method.
  • This approximation method may be Newton's approximation method, in which the exponential course is simulated by individual secants placed against one another (cf. also Dubbel "Taschenbuch für Maschinenbau, 18th edition 1995, pages A 106, A 107 ).
  • the delay time T 2 which starts from the beginning of the blockage, that is to say with the second increase in power consumption P for the electric motor 2, is usually measured below 1 second and is approximately 0.5 seconds in the exemplary embodiment. That is, it applies , T 2 «0.5 seconds. Until the hold value P 2 is reached, usually only about half a second passes. That is, T 3 «0.5 sec.
  • the control of the power P of the electric motor 2 is carried out by the control unit 11 in the sense of a pulse-wide modulated energization.
  • the electrical power P available in each case can be determined simply by the product of the time duration of the respective current pulses times their current value.

Landscapes

  • Power-Operated Mechanisms For Wings (AREA)

Abstract

L'invention concerne un actionneur pour des unités mobiles (1) de véhicules automobiles, telles que hayons, portes coulissantes, serrures de portes (1), etc.. Dans sa configuration de base, ledit actionneur présente un moteur électrique (2), un élément d'actionnement (8) et un élément de rappel (3). Le moteur électrique (2) déplace l'élément d'actionnement (8), en s'opposant à la force exercée par l'élément de rappel (3), jusqu'à une butée (9). Selon l'invention, après un temps de retard (T2) réglable, la puissance électrique (P) alimentant le moteur électrique (2) est réduite à une valeur (P2) juste assez élevée pour placer l'élément d'actionnement (8) en position de blocage.
EP03750588A 2002-09-21 2003-09-20 Actionneur pour unites mobiles de vehicules automobiles Expired - Lifetime EP1556568B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE2002143893 DE10243893A1 (de) 2002-09-21 2002-09-21 Stellantrieb für bewegbare Kraftfahrzeug-Aggregate
DE10243893 2002-09-21
PCT/EP2003/010486 WO2004029392A1 (fr) 2002-09-21 2003-09-20 Actionneur pour unites mobiles de vehicules automobiles

Publications (2)

Publication Number Publication Date
EP1556568A1 true EP1556568A1 (fr) 2005-07-27
EP1556568B1 EP1556568B1 (fr) 2006-06-21

Family

ID=31969354

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03750588A Expired - Lifetime EP1556568B1 (fr) 2002-09-21 2003-09-20 Actionneur pour unites mobiles de vehicules automobiles

Country Status (4)

Country Link
EP (1) EP1556568B1 (fr)
AU (1) AU2003270231A1 (fr)
DE (2) DE10243893A1 (fr)
WO (1) WO2004029392A1 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006020799B4 (de) * 2006-05-03 2018-01-04 Huf Hülsbeck & Fürst Gmbh & Co. Kg Verriegelungseinrichtung mit einem bürstenlosen Gleichstrom-Antriebsmotor
DE202007016719U1 (de) * 2007-11-28 2009-04-02 Kiekert Ag Kraftfahrzeugtürverschluss
DE102011008992A1 (de) * 2011-01-20 2012-07-26 GM Global Technology Operations LLC (n. d. Ges. d. Staates Delaware) Verschlussvorrichtung
DE102012010456A1 (de) * 2012-05-26 2013-11-28 Kiekert Aktiengesellschaft Kraftfahrzeugtürschloss
DE102016209915A1 (de) 2016-06-06 2017-12-07 Brose Fahrzeugteile Gmbh & Co. Kommanditgesellschaft, Bamberg Verstellantrieb eines Kraftfahrzeugs
DE102021110406A1 (de) * 2021-04-23 2022-10-27 Brose Fahrzeugteile Se & Co. Kommanditgesellschaft, Bamberg Kraftfahrzeugschloss
NL2033731B1 (en) * 2022-12-15 2024-06-20 Mci Mirror Controls Int Netherlands B V Vehicle inlet port door actuation

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2460562A1 (fr) * 1979-07-03 1981-01-23 Mecanismes Comp Ind De Dispositif electrique de commande centralise, notamment pour serrures de vehicule automobile
DE3347024A1 (de) * 1983-12-24 1985-07-04 Vdo Adolf Schindling Ag, 6000 Frankfurt Elektrische zentralverriegelungsvorrichtung fuer kraftfahrzeuge und verfahren zur elektrischen zentralverriegelung
GB2309251B (en) * 1996-01-16 2000-05-17 Nissan Europ Tech Centre Electrical central locking arrangement
DE19710834C2 (de) * 1996-03-18 2002-10-31 Eak Electronic Alarm Kromer Gm Vorrichtung und Verfahren zum Betätigen eines Sperrelements
ES2274827T3 (es) * 2000-02-11 2007-06-01 BROSE SCHLIESSSYSTEME GMBH & CO. KG Cerradura de puerta de vehiculo automovil y procedimiento de control de la misma.
DE10032664C2 (de) * 2000-07-05 2003-10-16 Daimler Chrysler Ag Verriegelungssystem für ein Fahrzeug
JP2002034286A (ja) * 2000-07-17 2002-01-31 Nec Corp Ｈブリッジ型モータ駆動回路

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2004029392A1 *

Also Published As

Publication number Publication date
AU2003270231A1 (en) 2004-04-19
WO2004029392A1 (fr) 2004-04-08
DE10243893A1 (de) 2004-04-01
EP1556568B1 (fr) 2006-06-21
DE50303992D1 (de) 2006-08-03

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