US20010038271A1 - Motor vehicle door lock and process for its control - Google Patents
Motor vehicle door lock and process for its control Download PDFInfo
- Publication number
- US20010038271A1 US20010038271A1 US09/780,627 US78062701A US2001038271A1 US 20010038271 A1 US20010038271 A1 US 20010038271A1 US 78062701 A US78062701 A US 78062701A US 2001038271 A1 US2001038271 A1 US 2001038271A1
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- United States
- Prior art keywords
- electric motor
- motor drive
- shut
- point
- actuating element
- Prior art date
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- 238000000034 method Methods 0.000 title claims abstract description 13
- 230000008569 process Effects 0.000 title claims abstract description 13
- 238000012937 correction Methods 0.000 claims description 26
- 230000001133 acceleration Effects 0.000 claims description 6
- 238000006073 displacement reaction Methods 0.000 claims 1
- 230000000875 corresponding effect Effects 0.000 description 6
- 230000006978 adaptation Effects 0.000 description 2
- 238000012512 characterization method Methods 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000003044 adaptive effect Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000002596 correlated effect Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
Images
Classifications
-
- 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
- E05B81/14—Power-actuated vehicle locks characterised by the function or purpose of the powered actuators operating on bolt detents, e.g. for unlatching the bolt
-
- 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
- E05B81/64—Monitoring or sensing, e.g. by using switches or sensors
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S292/00—Closure fasteners
- Y10S292/03—Automobile multiple door latches
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S292/00—Closure fasteners
- Y10S292/07—Disc cam; also swinging windows, locking and operating means
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T292/00—Closure fasteners
- Y10T292/08—Bolts
- Y10T292/1043—Swinging
- Y10T292/1044—Multiple head
- Y10T292/1045—Operating means
- Y10T292/1047—Closure
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T292/00—Closure fasteners
- Y10T292/08—Bolts
- Y10T292/1043—Swinging
- Y10T292/1075—Operating means
- Y10T292/1082—Motor
Landscapes
- Power-Operated Mechanisms For Wings (AREA)
Abstract
A motor vehicle door lock and a process for controlling a motor vehicle door lock, the motor vehicle door lock having an electric motor drive for reaching a set position based upon at least one operating parameter such as a start-up characteristic acquired when the drive is started up. The electric motor drive is shut off and short circuited prior to the set position in time and in position. In order to achieve high positioning accuracy, deviations from the set positions are acquired to correct the shut-off point for later positioning.
Description
- 1. Field of the Invention
- This invention relates to a motor vehicle door lock such as a side door lock, a rear door lock, a rear hatch lock, or a hood lock and a process for controlling a motor vehicle door lock.
- 2. Description of the Related Art
- A motor vehicle door lock with the aforementioned mentioned features is known from practice and includes an electric motor drive for an assigned actuating or locking element of the motor vehicle door lock and a sensor for acquiring the position, especially the rotary position of the drive or the assigned actuating element, and a control means which for positioning of the drive or the actuating element in a set position shuts off or short circuits the drive at a shut-off point which precedes the set position in time and position. The electric motor drive at the shut-off point has a certain energy of motion which leads to a considerable slowing down, therefore to further motion until the drive and thus the actuating element stop. Accurate positioning of the actuating element in the set position is however only possible if the actual slowing down is considered when the shutoff point is established. It has been found in practice that the slowing down depends on various influences such that the positioning accuracy is adversely affected thereby.
- An object of the present invention is to provide a motor vehicle door lock with an electric motor positioning drive and a process for control thereof to obtain accurate positioning independent of production tolerances under various operating conditions.
- The object is achieved so that the actual position of the drive and of the actuating element is acquired or determined in the shut-off state and that for deviations from the set position the shut-off point is corrected accordingly for future positioning. Thus, adaptation is easily enabled which leads to enhanced precision positioning in the set position. In particular, production tolerances can be automatically balanced by the aforementioned measure. Furthermore, very accurate positioning is enabled even under different operating conditions.
- Preferably, at least one current operating characteristic, for example, a start-up characteristic of at least one of the drive and the assigned actuating element, is acquired or determined when the drive is actuated. The at least one operating characteristic is used to establish a shut-off point which precedes the set position in time and position. In particular, it has been recognized that the start-up behavior of the drive can also be used to draw conclusions about the braking behavior of the drive. Thus, without using an additional sensor, better or more accurate characterization of the operating behavior of the drive or its electric motor is possible.
- In general, a plurality of different operating or start-up characteristics can be determined. In a preferred embodiment, it is provided that the voltage which is applied to the electric motor drive when the drive is actuated is acquired as a first start-up characteristic, at least if the drive variable. Additionally, at least one of an initial speed, acceleration of at least one of the drive and the assigned actuating element is acquired as a second start-up characteristic. It has been found that by using the start-up characteristics, the required time or the positional setting of the shut-off point in advance of the set position which is to be assumed in the shut-off state can be established or determined. This can be explained by the fact that from the two indicated start-up characteristics, the temperature of the drive, which has a major effect upon its braking and shut-off behavior, can be estimated or approximately determined by using these start-up characteristics. Accordingly, depending upon the estimated temperature or the two aforementioned start-up characteristics, the advanced positioning of the shut-off point which is necessary for accurate positioning can be ascertained. In addition, the temperature of the drive can also be directly acquired by means of an additional sensor as an important parameter for establishing the shut-off point.
- Generally, the shut-off point is determined depending upon at least one operating parameter while the drive is engaged. In particular, a corresponding table or the corresponding performance data is used to determine the shut-off point based upon one operating parameter or on several current operating parameters. Accordingly pre-established deviations can be stored as a correction table or correction field so that then after establishing the current shut-off point by at least one of a correction table and a correction field based upon at least one current operating parameter, a correction value is determined in order to correct the shut-off point. In the aforementioned process, of course, interpolations are used if necessary. Additionally functional relationships, matrices or the like can be used in performing the process.
- Accordingly, the present invention accomplishes feedback during control, however, there is no control which is undesirably time-consuming for positioning at least one of the drive and the actuating element in a set position, but only correction or adaptation of the control parameters for future positioning after establishing a deviation. Other details, features, objectives and advantages of this invention are detailed below using the drawings of one preferred embodiment.
- FIG. 1 shows a schematic of a motor vehicle door lock; and
- FIG. 2 shows a schematic of the determination of the shut-off point.
- And now to the drawings, in which FIG. 1 shows a motor
vehicle door lock 1 in accordance with the present invention including a housing 2 (indicated by the broken line) and anelectric motor drive 3. Thedrive 3 comprises an electric motor (not shown) and an adjoining transmission such as aworm gear 4. Thedrive 3 acts on or engages a locking or actuatingelement 5 of the motorvehicle door lock 1 and is used to position the actuatingelement 5 in at least one set position. The actuatingelement 5 is made, for example, as a worm wheel and meshes with theworm gear 4. The locking or actuatingelement 5 represents one part of a conventional lock mechanism of the motorvehicle door lock 1 and also acts on adetent pawl 6 for securing an assignedlock latch 7 of the motorvehicle door lock 1. Moreover, the locking or actuatingelement 5 may also assume other or additional functions and optionally also several actuating functions, and may be positioned especially in the latter case in several set positions. - The motor
vehicle door lock 1 furthermore includes asensor 8 assigned to the actuatingelement 5 for acquiring the current position of the actuatingelement 5. Alternatively, thesensor 8 can also be assigned to thedrive 3 or integrated into thedrive 3. Thesensor 8 is made as an incremental detector for acquiring the angular position of at least one of the actuatingelement 5, the electric motor and theworm gear 4. Thesensor 8, however, can also be formed by some other means for acquiring, or optionally, indirectly determining at least one of the actuating or rotary position, the speed and the acceleration of at least one of thedrive 3 and the actuatingelement 5. For example, thesensor 8 may also be a Hall sensor or a plurality of Hall sensors or an optical sensor, a mechanical sensor, such as at least one microswitch, or the like. Alternatively, thelock 1 may also include a current ripple counting or acquisition and evaluation (so-called ripple count) for acquiring the number of revolutions, the rotary speed or other operating parameters. This acquisition can be integrated into a drive control (not shown) or into another other control. - The motor
vehicle door lock 1 further includes a controller or control means 9 comprising a micro-controller for controlling thedrive 3, especially for actuating (and turning off) thedrive 3. The control means 9 is electrically connected via aterminal 10 to motor vehicle electronics (not shown), for example, a central interlock system, and/or an actuating switch. Thesensor 8 is electrically connected to the control means 9 so that the control means 9 can at least one of acquire and indirectly determine at least one of the angular position and the angular speed of at least one of the actuatingelement 5 and thedrive 3. - Positioning in the desired set position is detailed below using FIG. 2. The actuating
element 5 is disk-like and bears a journal-like function element 11 which projects in the axial direction of the actuatingelement 5 and swivels adetent pawl 6 depending upon the rotary position of the actuatingelement 5. To position the actuatingelement 5 or thefunction element 11 in aset position 12, such as a desired angular position, for the direction of motion orrotation 13 of the actuatingelement 5, theelectric drive motor 3 is at least one of turned off at a shut-offpoint 14, and, depending upon the version of theelectric motor drive 3 and the desired braking, is short-circuited. The shut-offpoint 14 is placed in advance of theset position 12 either positionally by the braking distance or thebraking angle 15 against thedirection 13 of motion or rotation of the actuating element or in time by the braking time. The braking distance or braking time which is required by thedrive 3 or the actuatingelement 5 after thedrive 3 is shut off, therefore starting from the shut-offpoint 14, depends upon the slowing down of thedrive 3 and the actuatingelement 5 after thedrive 3 is shut off. The shut-offpoint 14 can, therefore, be determined by the interval in time or space from theset position 12, depending upon how the control means 9 functions. - It is provided that the control means9 when the
drive 3 is actuated (started-up), or in the immediately subsequent (start-up) phase, acquires at least one start-up characteristic which at least indirectly characterizes the operating state of thedrive 3 or its electric motor, or some other operating parameter. The start-up characteristic which is re-determined preferably for each turn-on or start-up is then used to fix or vary or correct the shut-offpoint 14. While it is preferred that the start-up characteristics are acquired or updated each time thedrive 3 is started or turned on, acquisition of the start-up characteristics can be repeated only when a stipulated minimum time has transpired. The expression “start-up characteristic” should be understood by those skilled in the art in the sense that at least one parameter is encompassed which allows characterization of the starting behavior of thedrive 3 based upon the current operating state. In particular, several start-up characteristics can also be acquired. The corresponding applies to other operating parameters which can be acquired alternatively or additionally to the establishment of the shut-off point 14. - The distance traveled and the angle traversed by at least one of the
drive 3 and theactuating element 5 in a definable time from the start-up or engagement of thedrive 3 is acquired by the control means 9 as a start-up characteristic. Alternatively, the time necessary for a certain distance traveled and a certain angle traversed can be acquired by the control means 9 as a start-up characteristic. One such start-up characteristic in combination with the voltage applied to thedrive 3 allows enhanced determination or estimation of the temperature of thedrive 3. Since heat has a major effect upon the braking behavior or the slowing down of thedrive 3 and theactuating element 5, the shut-off point 14 can be appropriately set or corrected directly from the indicated start-up characteristic and the voltage and/or with interim estimation of the temperature of thedrive 3 or the value correlated therewith, so that positioning in theset position 11 at rest can be obtained. - Additionally, at least one of the initial or average speed, acceleration, and the values of the
drive 3 and of theactuating element 5 are derived from or corresponding to the aforementioned start-up characteristic or at least one of the actual speed, acceleration of at least one of thedrive 3 and theactuating element 5, measurable after a certain start-up time, is determined or acquired as a start-up characteristic. In particular, based upon the voltage applied to thedrive 3, parameters for determining or estimating the temperature of thedrive 3 and/or of the slowing down or the braking behavior of thedrive 3 may be obtained. The temperature, if used as an operating parameter to establish or determine the shut-off point 14, can also be acquired via thesensor 8 or a separate sensor (not shown). Current measurement or acquisition of the voltage applied to thedrive 3 can be omitted if it is always constant; this however is not always the case in a motor vehicle. In addition, the power consumption of thedrive 3 in the start-up phase can be acquired as the start-up characteristic. - Preferably, each time the
drive 3 is actuated (started up), a first start-up characteristic is acquired, such as the rpm or the speed of thedrive 3, when at least one of thedrive 3 and theactuating element 5 reaches a first position or when a predetermined time after engagement has transpired. Acquisition can take place via thesensor 8 for position acquisition, and the rpm or the speed of thedrive 3 can be determined from the behavior of the current or by means of at least one of a second sensor and an incremental detector or the like (not shown). It is also possible to use a clock base or time base or the like which is conventionally present anyway in the control means 9. - Furthermore, the current temperature is acquired or determined as the second operating parameter or start-up characteristic via at least one of another sensor (not shown) from at least one start-up characteristic of at least one of the
drive 3 and theactuating element 5. For example, a determination or estimation of the current temperature of the drive can be made from two start-up characteristics, for example, the time duration of how long at least one of thedrive 3 and theactuating element 5 needs to move by a predetermined angle of rotation or by what angle of rotation at least one of thedrive 3 and theactuating element 5 moves within a predetermined time, and the voltage on thedrive 3 via at least one of a function and a table stored or filed in thecontrol unit 9. - Subsequently, the expected slowing down or
braking angle 15 is ascertained from the aforementioned two operating characteristics. Accordingly, the initially temporary shut-off point 14 is established by the control means 9 and takes place by the shut-off point 14 which is stipulated as the base setting and/or thebraking angle 15 which is stipulated as the base setting being corrected or changed depending upon the ascertained or acquired operating parameters. Of course, thetemporary braking angle 15 and/or the shut-off point 14 can also be directly determined from the two indicated operating parameters, especially in turn using a function and/or a table which is filed in the control means 9 or performance data which are filed in the control means 9. It goes without saying that intermediate values can be interpolated if necessary. - After determining the
temporary braking angle 15 or the shut-off point 14 in accordance with the present invention, if necessary, a correction takes place in order to obtain at least one of thefinal braking angle 15 and shut-off point 14 at which thedrive 3 is in fact shut off during the current positioning process. In particular, it is provided that a correspondingly matched correction table or a correspondingly matched correction field stored or filed in the control means 9 is used based upon at least one operating parameter, and delivers a correction value which is added or subtracted with consideration of the corresponding sign to thetemporary braking angle 15 or shut-off point 14 in order to obtain thefinal braking angle 15 or shut-off point 14. Of course, intermediate values can also be interpolated here if necessary. Also functional relationships, matrices or the like can be used in doing so. Correction values can also be made available in some other way by the control means 9. - After establishing the final braking angle or shut-
off point 14 thedrive 3 is shut off when the shut-off point 14 is reached. As a result of slowing down, theactuating element 5 continues to move until thedrive 3 and theactuating element 5 stop whereby the actuating element assumes the actual position (not shown) which corresponds as much as possible to the set position. It is provided in accordance with the present invention that the actual position of theactuation element 5 or thefunction element 11 is acquired by thesensor 8 or other sensor means. The control means 9 determines the deviation of the actual position from theset position 12; therefore, the difference is formed. This deviation or difference is filed or stored as a correction value in the control means 9. Accordingly, the aforementioned correction table or the aforementioned correction field can be formed by at least one of considering or assigning at least one operating parameter, preferably all operating parameters, which was or were used to determine thetemporary braking angle 15 or the shut-off point 14. In particular, for deviations from zero various correction values can be stored accordingly in the correction table or the correction field. These correction values are then used in subsequent positionings based upon the operating parameters. Accordingly adaptive correction which leads to an increase of positioning accuracy easily results. - Of course, the correction can also take place by other processing, display or storage of correction values or by another control sequence. In particular, for example, a threshold value can be stipulated so that only deviations of the actual position from the
set position 12 which quantitatively exceed the threshold value lead to a change of the corresponding correction values. The present invention is advantageous since, at very little cost, accurate positioning can be obtained for prompt stopping and especially without control. - In accordance with the present invention, the
actuating element 5 executes rotary motion, while theactuating element 5 may also execute linear or superimposed motion. In addition, the present invention is not limited to a motorvehicle door lock 1, but may also be applied to any electric motor positioning drive. The present invention is, however, used especially in actuating and drive systems in motor vehicles, since economical and reliably operating systems with a simple structure are desired.
Claims (12)
1. A motor vehicle door lock comprising:
an actuating element
an electric motor drive for engaging said actuating element;
a sensor electrically connected to said electric motor drive for acquiring at least one of an angular position and angular velocity of at least one of said electric motor drive and said actuating element; and
control means for controlling said electric motor drive based upon signals received from said sensor by establishing a set position of said electric motor drive and at least one of turning off and short circuiting said electric motor drive at a predetermined shut-off point which precedes the set position in time and position,
wherein at least one of an actual position and a deviation from a set position of at least one of said electric motor drive and said actuating element in at least one of the shut-off state and the short circuit state is determined to correct the shut-off point.
2. The motor vehicle door lock as claimed in , wherein at least one operating parameter of at least one of said electric motor drive and said actuating element is obtained for establishing the shut-off point.
claim 1
3. The motor vehicle door lock as claimed in , wherein said at least one operating parameter includes at least one of a voltage, angular speed, angular displacement, time, angular acceleration, predetermined time after start-up, power consumption and voltage of at least one of said electric motor drive and said actuating element.
claim 2
4. The motor vehicle door lock as claimed in , wherein th e shut-off point is obtained based upon an actual temperature of said electric motor drive.
claim 3
5. The motor vehicle door lock as claimed in , wherein the shut-off point is obtained based upon an estimated temperature of said electric motor drive determined using said at least one operating parameter.
claim 3
6. The motor vehicle door lock as claimed in , wherein the shut-off point is obtained using at least one of a braking distance and a braking time of said electric motor drive based upon the set position.
claim 3
7. The motor vehicle door lock as claimed in , wherein the braking distance or the braking time is obtained based upon at least one of a start-up characteristic and the temperature of the electric motor drive derived from said start-up characteristic.
claim 3
8. Process for controlling a motor vehicle door lock with an electric motor drive for an assigned actuating element, said process comprising the steps of:
establishing a set position for said electric motor drive by at least one of shutting off and short-circuiting at least one of said electric motor drive and said actuating element at a shut-off point which precedes the set position in time and position,
acquiring an actual position of at least one of said electric motor drive and said actuating element in the shut-off state; and
determining a deviation value of the actual position from the set position; and
correcting the shut-off point based upon the deviation value.
9. The process as claimed in , wherein the deviation value is stored as a correction value used for correcting the shut-off point when the shut-off point is established.
claim 8
10. The process as claimed in , wherein at least one of a start-up characteristic and the temperature of at least one of said electric motor drive and said actuating element is acquired, and wherein the shut-off point is established based upon at least one of a start-up characteristic and the temperature and the set position.
claim 9
11. The process as claimed in , wherein a plurality of correction values are stored based upon at least one of the start-up characteristics and the temperatures, and wherein said plurality of correction values are used accordingly for subsequent correction of the shut-off point.
claim 10
12. The process as claimed in , wherein at least one of angular distance, time, speed and angular acceleration of at least one of said electric motor drive and said actuating element, a predetermined time after start-up of said electric motor drive, power consumption of said electric motor drive, the voltage applied to said electric motor drive are obtained as a start-up characteristic.
claim 11
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10021186A DE10021186A1 (en) | 2000-02-28 | 2000-05-03 | Electric motor operated motor vehicle door lock has a sensor and control system which stops the motor at a predetermined point prior to unlocking unless a certain parameter is satisfied |
DE10021186 | 2000-05-03 | ||
DE10021186.0 | 2000-05-03 |
Publications (2)
Publication Number | Publication Date |
---|---|
US20010038271A1 true US20010038271A1 (en) | 2001-11-08 |
US6459223B2 US6459223B2 (en) | 2002-10-01 |
Family
ID=7640427
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US09/780,627 Expired - Fee Related US6459223B2 (en) | 2000-05-03 | 2001-02-12 | Motor vehicle door lock and process for its control |
Country Status (1)
Country | Link |
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US (1) | US6459223B2 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20110061199A1 (en) * | 2009-09-14 | 2011-03-17 | Matthias Rauscher | Locking device for locking a motor vehicle part |
WO2013171006A1 (en) * | 2012-05-15 | 2013-11-21 | Zf Friedrichshafen Ag | Electromechanical assembly for a vehicle closing system and method for determining an actuation of a switching device |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10028041A1 (en) * | 2000-06-06 | 2001-12-13 | Kostal Leopold Gmbh & Co Kg | Determining the position of an element, e.g. sun roof of vehicle, actuated by the drive shaft of DC motor, involves evaluating current ripple contained in armature current signal when moving element from one block position to another |
GB0110456D0 (en) * | 2001-04-28 | 2001-06-20 | Meritor Light Vehicle Sys Ltd | Latch assembly |
DE10126168A1 (en) * | 2001-05-30 | 2002-12-05 | Kostal Leopold Gmbh & Co Kg | Method for determining the frequency of the current ripples contained in the armature current signal of a commutated DC motor |
DE10239734A1 (en) * | 2002-08-26 | 2004-03-11 | Brose Schließsysteme GmbH & Co.KG | Motor vehicle flap closure or the like |
JP3952297B2 (en) * | 2002-08-29 | 2007-08-01 | 富士電機システムズ株式会社 | Motor drive control device |
DE102008035928A1 (en) * | 2008-08-01 | 2010-02-04 | Assa Abloy Sicherheitstechnik Gmbh | Door opener with remote-controlled valve |
JP5421012B2 (en) * | 2009-03-24 | 2014-02-19 | アイシン精機株式会社 | Opening / closing member drive control device for vehicle |
EP2806091B1 (en) * | 2012-04-17 | 2017-10-04 | Magna Closures SpA | An electrical vehicle latch |
DE102012023236A1 (en) * | 2012-11-28 | 2014-05-28 | Kiekert Aktiengesellschaft | Motor vehicle door lock |
US11572721B2 (en) | 2019-01-17 | 2023-02-07 | Strattec Security Corporation | Latch assembly |
US11933082B2 (en) | 2020-03-23 | 2024-03-19 | Strattec Security Corporation | Cinching latch assembly |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2628597C3 (en) * | 1976-06-25 | 1979-07-19 | Ellenberger & Poensgen Gmbh, 8503 Altdorf | Locking device for doors and the like on electrically operated devices |
DE3531931A1 (en) * | 1985-09-07 | 1987-03-19 | Ymos Ag Ind Produkte | LOCKING DEVICE FOR MOTOR VEHICLES |
US5656899A (en) * | 1994-07-18 | 1997-08-12 | Mitsui Mining & Smelting Co., Ltd. | Control apparatus for door lock device |
DE19539753B4 (en) * | 1995-10-26 | 2005-12-22 | Kiekert Ag | Motor vehicle door lock with central locking device |
DE19711563A1 (en) * | 1997-03-20 | 1998-09-24 | Bosch Gmbh Robert | Circuit arrangement for controlling an electrically operated motor vehicle door lock or the like. |
US6139073A (en) * | 1998-08-31 | 2000-10-31 | Westinghouse Air Brake Company | Lock assembly |
-
2001
- 2001-02-12 US US09/780,627 patent/US6459223B2/en not_active Expired - Fee Related
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20110061199A1 (en) * | 2009-09-14 | 2011-03-17 | Matthias Rauscher | Locking device for locking a motor vehicle part |
US8596424B2 (en) * | 2009-09-14 | 2013-12-03 | Brose Fahrzeugteile Gmbh & Co. Kg, Coburg | Locking device for locking a motor vehicle part |
WO2013171006A1 (en) * | 2012-05-15 | 2013-11-21 | Zf Friedrichshafen Ag | Electromechanical assembly for a vehicle closing system and method for determining an actuation of a switching device |
Also Published As
Publication number | Publication date |
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US6459223B2 (en) | 2002-10-01 |
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