EP4667687A1 - Method for operating an electronic door actuation arrangement - Google Patents

Method for operating an electronic door actuation arrangement

Info

Publication number
EP4667687A1
EP4667687A1 EP24183771.5A EP24183771A EP4667687A1 EP 4667687 A1 EP4667687 A1 EP 4667687A1 EP 24183771 A EP24183771 A EP 24183771A EP 4667687 A1 EP4667687 A1 EP 4667687A1
Authority
EP
European Patent Office
Prior art keywords
voltage
actuating member
time period
electric motor
ratchet 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.)
Pending
Application number
EP24183771.5A
Other languages
German (de)
French (fr)
Inventor
Peter Szegeny
Johannes Bauer
Michael Herrmann
Holger Schiffer
Marco Merletti
Matteo GIARNETTI
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
Priority to EP24183771.5A priority Critical patent/EP4667687A1/en
Priority to PCT/EP2025/067047 priority patent/WO2025262114A1/en
Publication of EP4667687A1 publication Critical patent/EP4667687A1/en
Pending legal-status Critical Current

Links

Classifications

    • EFIXED CONSTRUCTIONS
    • E05LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05BLOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B81/00Power-actuated vehicle locks
    • E05B81/12Power-actuated vehicle locks characterised by the function or purpose of the powered actuators
    • E05B81/20Power-actuated vehicle locks characterised by the function or purpose of the powered actuators for assisting final closing or for initiating opening
    • EFIXED CONSTRUCTIONS
    • E05LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05BLOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B81/00Power-actuated vehicle locks
    • E05B81/54Electrical circuits
    • E05B81/56Control of actuators
    • E05B81/58Control of actuators including time control, e.g. for controlling run-time of electric motors
    • EFIXED CONSTRUCTIONS
    • E05LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05BLOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B81/00Power-actuated vehicle locks
    • E05B81/54Electrical circuits
    • E05B81/64Monitoring or sensing, e.g. by using switches or sensors
    • E05B81/66Monitoring or sensing, e.g. by using switches or sensors the bolt position, i.e. the latching status
    • EFIXED CONSTRUCTIONS
    • E05LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05FDEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05F15/00Power-operated mechanisms for wings
    • E05F15/60Power-operated mechanisms for wings using electrical actuators

Definitions

  • the invention relates to a method for operating an electronic door actuation arrangement, comprising an electric motor, a first actuating member and a corresponding second actuating member, wherein the first actuating member is rotationally coupled to the electric motor for being moved from an open position into a main ratchet position with respect to the second actuating member.
  • the invention further relates to an electronic door actuation arrangement and the use of an electronic door actuation arrangement on the door of a vehicle.
  • Electronically actuated door latches, door openers, and door closers are increasingly being installed in vehicles to facilitate the opening, closing, unlocking, and locking of the vehicle's doors and tailgate.
  • the electronically actuated door latch often referred to as an eLatch, is unlocked and locked electronically.
  • the electronically actuated door opener also known as a presenter, is also electronically operated and is used to open the door.
  • the electronically actuated door closer also known as a cincher, closes the open door.
  • These components are often integrated into one unit, forming a comprehensive electronic door actuation arrangement.
  • the door can be opened and closed in different ways. For instance, some doors perform a pivoting movement, while others are designed as sliding doors that move in a linear direction. Such sliding doors can also be equipped with an automatic system to create an electronically actuated sliding door.
  • electronically actuated door latches, door openers, and door closers are subsumed under the term "electronic door actuation arrangements”.
  • a method for operating an electronic door actuation arrangement comprising an electric motor, a first actuating member and a corresponding second actuating member, wherein the first actuating member is rotationally coupled to the electric motor for being moved from an open position via a pre-ratchet position into a main ratchet position with respect to the second actuating member, comprising the following method steps:
  • the first actuating member is therefore force-lockingly connected to the electric motor, such that the first actuating member is moved from the open position via the pre-ratchet position to the main ratchet position with respect to the corresponding second actuating member when the electric motor is actuated.
  • the movement performed here with the first actuating member is preferably a rotational movement.
  • the first actuating member can also be designed such that the rotational movement is converted into a translational movement.
  • the first actuating member directly interacts with the electric motor to initiate a closing or locking movement, while the second actuating member acts as the counterpart, receiving the movement to engage with the first actuating member in the main ratchet position.
  • the electronic door actuation arrangement With the first actuating member in the open position, the electronic door actuation arrangement is open, which means that a door is open or an electronically actuated door latch is unlocked. If the first actuating member is in the main ratchet position, the electronic door actuation arrangement is closed, which means that the door is closed or the electronically actuated door latch is locked.
  • the pre-ratchet position serves as an intermediate stage in the transition from open to closed or unlocked to locked, allowing for a controlled and phased/stepped movement.
  • the second actuating member is therefore designed such that the first actuating member can engage with it.
  • the first actuating member is arranged in the door of a vehicle, while the second actuating member is arranged in a door frame of the vehicle, receiving the movement of the first actuating member to close the door in the main ratchet position.
  • the method comprises driving the electric motor with the first voltage for the predetermined drive time period when the first actuating member is in the open position.
  • Driving the electric motor with the first voltage initiates the movement of the first actuating member from its initial open position.
  • This step comprises most of the movement that needs to be performed to move the first actuating member from the open position to the main ratchet position and therefore benefits from the first voltage being a higher voltage than the third voltage to ensure the movement is swift and efficient. Moving the first actuating member from the open position to the pre-ratchet position requires little force and therefore also implies a lower mechanical load on the first actuating member.
  • One advantage of dividing the movement of the first actuating member with respect to the second actuating member from the open position into the main ratchet position with the pre-ratchet position is that the movement of the first actuating member into the pre-ratchet position can be carried out at a much higher speed than if the first actuating member moves into the main ratchet position in a single movement.
  • Mechanical stress on the electronic door actuation arrangement in this driving step with the first voltage is significantly reduced as compared to the movement from the pre-ratchet position to the main ratchet position.
  • the first voltage is then reduced until the first actuating member reaches the pre-ratchet position when the second voltage is reached.
  • This reduction in voltage serves to decrease the speed of the electric motor, effectively performing a braking action.
  • the method further comprises driving the electric motor with a third voltage until the first actuating member reaches the main ratchet position.
  • the movement from the pre-ratchet position to the main ratchet position requires the most force to be transmitted from the electric motor to the first actuating member.
  • the first actuating member While the first actuating member is in the pre-latching position contacting the second actuating member or in its immediate vicinity, the first actuating member engages with the second actuating member in the main ratchet position, such that the electronic door actuation arrangement is closed.
  • the third voltage is lower than the first voltage, ensuring a smooth and controlled final movement into the main ratchet position.
  • the use of a lower third voltage ensures that the force exerted by the electric motor is gentle yet sufficient to secure the door without causing excessive wear on the first actuating member and the second actuating member.
  • One advantage of this step is the further reduction of mechanical stress and noise.
  • the method ensures that each step is improved for the specific requirements of the first actuating members position with respect to the position of the second actuating member.
  • This stepped/phased approach not only reduces the mechanical load and noise level during the closing process but also enhances the overall durability and reliability of the electronic door actuation arrangement.
  • the second voltage is negative, positive or a base voltage corresponding to a short-circuit voltage.
  • the positive second voltage can advantageously correspond to the third voltage, such that the transition between reaching the pre-ratchet position and moving to the main ratchet position is as smooth as possible.
  • a negative voltage can effectively act as a braking mechanism by reversing the current flow through the electric motor. This provides a more controlled and gradual deceleration of the actuating member.
  • using a negative voltage allows for finer control over the positioning of the first actuating member.
  • a base voltage corresponding to a short-circuit voltage may be understood as a voltage level that causes the electric motor to effectively cease operation, creating a stop condition, which means that the electric motor is at a standstill in the pre-ratchet position.
  • This standstill in the pre-ratchet position can be used, for example, to query again as part of a drive logic whether the electronic door actuation arrangement should be closed or whether an opening signal is still present, etc.
  • One technical advantage of this arrangement is that it allows for flexible control over the electric motor's braking and stopping.
  • the second voltage is a positive voltage
  • the second voltage is lower than the third voltage. This ensures that the electric motor's transition from the pre-ratchet position to the main ratchet position is smooth and controlled, giving the electronic door actuation arrangement more time to move the first actuating member to the main ratchet position.
  • the first voltage is at least 6 V
  • the second voltage is at most 1 V
  • the third voltage is at most 4 V.
  • the second voltage is maintained for a predetermined brake time period
  • the third voltage is maintained for a predetermined close time period.
  • a predetermined brake time period and close time period ensure that each step of the door movement is precisely controlled.
  • the time periods can vary. According to a preferred embodiment of the invention, however, the predetermined drive time period is 50 ms, the predetermined brake time period is 5 ms, and the predetermined close time period is 10 ms. These specific time periods are selected to ensure improved performance of the electric motor during different steps of the movement of the first actuating member.
  • One technical advantage is that these precise timings enhance the efficiency and smoothness of the actuation, ensuring swift and reliable movements.
  • the method comprises the following further steps:
  • the reference phase can be carried out during the production of the electronic door actuation arrangement or during the assembly of the electronic door actuation arrangement.
  • the normal operation phase is the phase downstream of the reference phase, in an installed state of the electronic door actuation arrangement during its intended operation.
  • the values stored in the reference actuation series can be stored on a data storage and/or in a control unit of the vehicle. They can be stored on this data storage in the form of a table such that the respective required voltages and time periods are clearly assigned to each ambient temperature of the plurality of ambient temperatures of the reference phase.
  • One technical advantage of this arrangement is that it ensures reliable performance of the method according to the invention in different ambient temperature environments by adapting the voltages and predetermined time periods to the current ambient temperature. This reliably prevents the development of mechanical wear and noise, particularly considering temperature-dependent material changes.
  • the plurality of ambient temperatures in the reference phase is altered from -40°C to 85°C. This wide range of temperatures ensures that the method for operating the electronic door actuation arrangement according to the invention is tested and improved for extreme environmental conditions.
  • One technical advantage is that it ensures the electronic door actuation arrangement remains functional and reliable in both very cold and very hot climates.
  • the first voltage, the second voltage, the third voltage and the predetermined drive time period, the predetermined brake time period and the predetermined close time period are determined by interpolating the current ambient temperature from the plurality of ambient temperatures in conjunction with interpolating the required first voltage, the required second voltage, the required third voltage and the drive time period, the brake time period and the close time period of the reference actuation series, or by using the nearest ambient temperature from the plurality of ambient temperatures in conjunction with the nearest required first voltage, the required second voltage, the required third voltage and the drive time period, the brake time period and the close time period of the reference actuation series.
  • This method allows for precise adjustment based on the voltages and predetermined time periods for operating the electronic door actuation arrangement at the current ambient temperature.
  • One technical advantage is that it enhances the adaptability and performance of the electronic door actuation arrangement, ensuring improved moveability of the first actuating member regardless of variations in temperature.
  • the electric motor is driven with the first voltage for the predetermined drive time period up to a fourth voltage, wherein the first voltage is different from the fourth voltage.
  • This additional voltage step provides finer control over the first actuating member's movement.
  • the fourth voltage is lower than the first voltage and higher than the second voltage. This ensures that the method for operating the electronic door actuation arrangement according to the invention avoids abrupt changes in voltage.
  • One technical advantage is the smooth movement of the first actuating member, reducing the risk of mechanical failures and noise.
  • the fourth voltage is reduced until the electric motor is at a standstill for reaching the pre-ratchet position upon reaching the second voltage, wherein the second voltage is the base voltage corresponding to the short-circuit voltage.
  • This controlled reduction in voltage ensures that the electric motor stops precisely at the pre-ratchet position.
  • the voltage is increased starting from the second voltage for the predetermined brake time period up to a fifth voltage, wherein the fifth voltage is the base voltage corresponding to the short-circuit voltage.
  • This step ensures that the electric motor is gently restarted after reaching a standstill in the pre-ratchet position the brake time period.
  • One technical advantage is the smooth transition between the brake and close steps, reducing mechanical stress.
  • the electric motor is driven with the third voltage for the predetermined close time period up to a sixth voltage, wherein the first actuating member is in the main ratchet position when the sixth voltage is reached, and the third voltage is different from the sixth voltage.
  • This step ensures a precise final movement to the main ratchet position.
  • One technical advantage is the secure and reliable movement of the first actuating member with respect to the second actuating member, reducing the risk of incomplete engaging.
  • the voltages can be changed in different ways.
  • the third voltage is achieved by continuously increasing the second voltage. This continuous increase ensures a smooth and controlled transition.
  • One technical advantage is the reduction of mechanical stress and noise, providing a quieter and more durable method according to the invention.
  • the electric motor is at the base voltage corresponding to the short-circuit voltage in the open position and the main ratchet position of the first actuating member. This ensures that the electric motor is effectively turned off when not in use.
  • One technical advantage is the reduction of energy consumption and wear on the electric motor.
  • the first actuating member moves from the main ratchet position via the pre-ratchet position to the open position with a second direction of rotation opposite to a first direction of rotation, the first direction of rotation being the direction of rotation to move the first actuating member from the open position via the pre-ratchet position into the main ratchet position, and the open position is reached starting from the main ratchet position by performing the method steps above.
  • This reverse movement ensures that the door can be opened as smoothly as it is closed.
  • One technical advantage is the consistent performance of the electronic door actuation arrangement in both directions.
  • the electronic door actuation arrangement is an electronically actuated door latch, wherein the first actuating member is a catch, and the second actuating member is a striker.
  • the striker may be understood as a mechanical component that holds the door in place, and the catch as a part that engages with the striker.
  • the invention further concerns an electronic door actuation arrangement for a vehicle, comprising a control unit, an electric motor, a first actuating member and a corresponding second actuating member, wherein the first actuating member is rotationally coupled to the electric motor for being moved from an open position via a pre-ratchet position into a main ratchet position with respect to the second actuating member, the control unit is connected to the electric motor and the first actuating member and the second actuating member for signal transmission, and the control unit is configured for performing the method for operating the electronic door actuation arrangement according to any one of the previous claims.
  • a control unit can be understood as an electronic device that manages the operation of the electric motor and the first actuating member with respect to the second actuating member based on predefined instructions given by the method according to the invention as described above.
  • One technical advantage is the integrated control and coordination of the electronic door actuation arrangement, ensuring reliable and efficient operation.
  • the invention relates also to the use of the electronic door actuation arrangement on the door of a vehicle.
  • Fig. 1 now schematically depicts a method for operating an electronic door actuation arrangement 1 on a door of a vehicle.
  • the electronic door actuation arrangement 1 is an electronically actuated door latch, wherein a first actuating member 3 is a catch and a corresponding second actuating member 4 is a striker.
  • Fig. 2 shows that the electronic door actuation arrangement 1 also has an electric motor 2 and a control unit 5 connected to the electric motor 2 and the first actuating member 3 and the second actuating member 4 for signal transmission.

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  • Lock And Its Accessories (AREA)

Abstract

The invention relates to a method for operating an electronic door actuation arrangement (1), comprising an electric motor (2), a first actuating member (3) and a corresponding second actuating member (4), wherein
the first actuating member (3) is rotationally coupled to the electric motor (2) for being moved from an open position via a pre-ratchet position into a main ratchet position with respect to the second actuating member (4), comprising the following method steps:
S1) in the open position, driving the electric motor (2) with a first voltage for a predetermined drive time period,
52) reducing the first voltage until the first actuating member (3) is in the pre-ratchet position upon reaching a second voltage,
S3) driving the electric motor (2) with a third voltage until the first actuating member (3) is in the main ratchet position, wherein the third voltage is lower than the first voltage. In this way an improved method for operating an electronic door actuation arrangement that reduces mechanical stress and noise is provided.

Description

  • The invention relates to a method for operating an electronic door actuation arrangement, comprising an electric motor, a first actuating member and a corresponding second actuating member, wherein the first actuating member is rotationally coupled to the electric motor for being moved from an open position into a main ratchet position with respect to the second actuating member. The invention further relates to an electronic door actuation arrangement and the use of an electronic door actuation arrangement on the door of a vehicle.
  • Background
  • Electronically actuated door latches, door openers, and door closers are increasingly being installed in vehicles to facilitate the opening, closing, unlocking, and locking of the vehicle's doors and tailgate. The electronically actuated door latch, often referred to as an eLatch, is unlocked and locked electronically. The electronically actuated door opener, also known as a presenter, is also electronically operated and is used to open the door. The electronically actuated door closer, also known as a cincher, closes the open door. These components are often integrated into one unit, forming a comprehensive electronic door actuation arrangement. The door can be opened and closed in different ways. For instance, some doors perform a pivoting movement, while others are designed as sliding doors that move in a linear direction. Such sliding doors can also be equipped with an automatic system to create an electronically actuated sliding door. In this context, electronically actuated door latches, door openers, and door closers are subsumed under the term "electronic door actuation arrangements".
  • All of these electronic door actuation arrangements are based on a motorized drive concept powered by electric motors. These electric motors are designed to provide the necessary force to operate a first actuating member of the electronic door actuation arrangement reliably. However, the current state of the art has several disadvantages. One significant issue is that the first actuating member which interacts with a second actuating member corresponding to the first actuating member in such a way that the closing or opening or locking and unlocking of the door of the vehicle is performed in a single, continuous movement. This results in high mechanical stress on the components, leading to accelerated wear and tear. Additionally, this movement causes considerable noise, which can be disruptive and undesirable, particularly in residential or quiet environments.
  • The high mechanical stress and noise pollution associated are further exacerbated by varying ambient temperatures. In cold conditions, the materials and components may become brittle, increasing the likelihood of mechanical failure. Conversely, in hot conditions, the components may expand or lose their structural integrity, leading to reduced efficiency and potential malfunction. These temperature-related issues add to the operational challenges and maintenance costs of electronic door actuation arrangements.
  • It is therefore an objective of the present invention to provide an improved method for operating an electronic door actuation arrangement that reduces mechanical stress and noise.
  • The object of the invention is solved by the features of the independent claims. Preferred implementations are detailed in the dependent claims.
  • Thus, a method for operating an electronic door actuation arrangement is provided, comprising an electric motor, a first actuating member and a corresponding second actuating member, wherein the first actuating member is rotationally coupled to the electric motor for being moved from an open position via a pre-ratchet position into a main ratchet position with respect to the second actuating member, comprising the following method steps:
    • in the open position, driving the electric motor with a first voltage for a predetermined drive time period,
    • reducing the first voltage until the first actuating member is in the pre-ratchet position upon reaching a second voltage,
    • driving the electric motor with a third voltage until the first actuating member is in the main ratchet position, wherein the third voltage is lower than the first voltage.
  • The first actuating member is therefore force-lockingly connected to the electric motor, such that the first actuating member is moved from the open position via the pre-ratchet position to the main ratchet position with respect to the corresponding second actuating member when the electric motor is actuated. The movement performed here with the first actuating member is preferably a rotational movement. However, the first actuating member can also be designed such that the rotational movement is converted into a translational movement. In this context, the first actuating member directly interacts with the electric motor to initiate a closing or locking movement, while the second actuating member acts as the counterpart, receiving the movement to engage with the first actuating member in the main ratchet position. With the first actuating member in the open position, the electronic door actuation arrangement is open, which means that a door is open or an electronically actuated door latch is unlocked. If the first actuating member is in the main ratchet position, the electronic door actuation arrangement is closed, which means that the door is closed or the electronically actuated door latch is locked. The pre-ratchet position serves as an intermediate stage in the transition from open to closed or unlocked to locked, allowing for a controlled and phased/stepped movement. The second actuating member is therefore designed such that the first actuating member can engage with it. For example, it may be provided that the first actuating member is arranged in the door of a vehicle, while the second actuating member is arranged in a door frame of the vehicle, receiving the movement of the first actuating member to close the door in the main ratchet position.
  • The method comprises driving the electric motor with the first voltage for the predetermined drive time period when the first actuating member is in the open position. Driving the electric motor with the first voltage initiates the movement of the first actuating member from its initial open position. This step comprises most of the movement that needs to be performed to move the first actuating member from the open position to the main ratchet position and therefore benefits from the first voltage being a higher voltage than the third voltage to ensure the movement is swift and efficient. Moving the first actuating member from the open position to the pre-ratchet position requires little force and therefore also implies a lower mechanical load on the first actuating member. One advantage of dividing the movement of the first actuating member with respect to the second actuating member from the open position into the main ratchet position with the pre-ratchet position is that the movement of the first actuating member into the pre-ratchet position can be carried out at a much higher speed than if the first actuating member moves into the main ratchet position in a single movement. Mechanical stress on the electronic door actuation arrangement in this driving step with the first voltage is significantly reduced as compared to the movement from the pre-ratchet position to the main ratchet position.
  • Subsequently, the first voltage is then reduced until the first actuating member reaches the pre-ratchet position when the second voltage is reached. This reduction in voltage serves to decrease the speed of the electric motor, effectively performing a braking action. By slowing down the electric motor as it approaches the pre-ratchet position, one advantage is the reduction of mechanical stress and the prevention of abrupt stops that could damage the components. This controlled deceleration also contributes to a quieter operation, as sudden movements are a primary source of noise.
  • According to the invention, the method further comprises driving the electric motor with a third voltage until the first actuating member reaches the main ratchet position. The movement from the pre-ratchet position to the main ratchet position requires the most force to be transmitted from the electric motor to the first actuating member. While the first actuating member is in the pre-latching position contacting the second actuating member or in its immediate vicinity, the first actuating member engages with the second actuating member in the main ratchet position, such that the electronic door actuation arrangement is closed.
  • It is thus essential for the method according to the invention, that the third voltage is lower than the first voltage, ensuring a smooth and controlled final movement into the main ratchet position. The use of a lower third voltage ensures that the force exerted by the electric motor is gentle yet sufficient to secure the door without causing excessive wear on the first actuating member and the second actuating member. One advantage of this step is the further reduction of mechanical stress and noise.
  • By dividing the movement of the first actuating member into distinct steps with corresponding voltage levels, the method ensures that each step is improved for the specific requirements of the first actuating members position with respect to the position of the second actuating member. This stepped/phased approach not only reduces the mechanical load and noise level during the closing process but also enhances the overall durability and reliability of the electronic door actuation arrangement.
  • In general, it is possible to reduce the first voltage to different second voltages. According to a preferred embodiment of the invention, however, the second voltage is negative, positive or a base voltage corresponding to a short-circuit voltage. The positive second voltage can advantageously correspond to the third voltage, such that the transition between reaching the pre-ratchet position and moving to the main ratchet position is as smooth as possible. A negative voltage can effectively act as a braking mechanism by reversing the current flow through the electric motor. This provides a more controlled and gradual deceleration of the actuating member. Furthermore, using a negative voltage allows for finer control over the positioning of the first actuating member. By precisely adjusting the voltage, the first actuating member is stopped at the pre-ratchet position with higher accuracy, without overshooting or undershooting. A base voltage corresponding to a short-circuit voltage may be understood as a voltage level that causes the electric motor to effectively cease operation, creating a stop condition, which means that the electric motor is at a standstill in the pre-ratchet position. This standstill in the pre-ratchet position can be used, for example, to query again as part of a drive logic whether the electronic door actuation arrangement should be closed or whether an opening signal is still present, etc. One technical advantage of this arrangement is that it allows for flexible control over the electric motor's braking and stopping.
  • According to a preferred embodiment of the invention, if the second voltage is a positive voltage, the second voltage is lower than the third voltage. This ensures that the electric motor's transition from the pre-ratchet position to the main ratchet position is smooth and controlled, giving the electronic door actuation arrangement more time to move the first actuating member to the main ratchet position.
  • In principle, different voltages can be used for the first voltage, the second voltage and the third voltage. According to a preferred embodiment of the invention, however, the first voltage is at least 6 V, the second voltage is at most 1 V, and the third voltage is at most 4 V. These specific voltage levels are chosen to improve the electric motor's performance during the steps of door movement. One technical advantage is that it ensures efficient energy use while reducing mechanical stress and noise, thereby improving the overall performance and longevity of the system.
  • It is possible to carry out position verification via sensors in the electronic door actuation arrangement. According to a preferred embodiment of the invention, however, the second voltage is maintained for a predetermined brake time period, and the third voltage is maintained for a predetermined close time period. A predetermined brake time period and close time period ensure that each step of the door movement is precisely controlled. One technical advantage is that it provides consistent and reliable movement, reducing variability and potential mechanical issues.
  • In principle, the time periods can vary. According to a preferred embodiment of the invention, however, the predetermined drive time period is 50 ms, the predetermined brake time period is 5 ms, and the predetermined close time period is 10 ms. These specific time periods are selected to ensure improved performance of the electric motor during different steps of the movement of the first actuating member. One technical advantage is that these precise timings enhance the efficiency and smoothness of the actuation, ensuring swift and reliable movements.
  • In general, it is possible to determine the voltages required to move the first actuating member and the predetermined time periods in different ways. According to a preferred embodiment of the invention, however, the method comprises the following further steps:
    • in a reference phase, exposing the electronic door actuation arrangement to a plurality of different ambient temperatures, and for each of the ambient temperatures of the plurality of ambient temperatures:
      • actuating the open position, the pre-ratchet position, and the main ratchet position,
      • detecting a required first voltage and a required second voltage to reach the pre-ratchet position and a required third voltage to reach the main ratchet position, as well as a drive time period, a brake time period and a close time period, and
      • storing the required first voltage, the required second voltage and the required third voltage as well as the drive time period, the brake time period and the close time period with the respective ambient temperature of the plurality of ambient temperatures in a reference actuation series, and
    • in a normal operation phase downstream of the reference phase, comparing a current ambient temperature of the electronic door actuation arrangement with the plurality of ambient temperatures of the reference actuation series, and
      selecting the first voltage, the second voltage and the third voltage from the required first voltage, the required second voltage and the required third voltage, and the by selection predetermined drive time period, the predetermined brake time period and the predetermined close time period on the basis of the comparison, and subsequently performing the steps above.
  • The reference phase can be carried out during the production of the electronic door actuation arrangement or during the assembly of the electronic door actuation arrangement. The normal operation phase is the phase downstream of the reference phase, in an installed state of the electronic door actuation arrangement during its intended operation. The values stored in the reference actuation series can be stored on a data storage and/or in a control unit of the vehicle. They can be stored on this data storage in the form of a table such that the respective required voltages and time periods are clearly assigned to each ambient temperature of the plurality of ambient temperatures of the reference phase. One technical advantage of this arrangement is that it ensures reliable performance of the method according to the invention in different ambient temperature environments by adapting the voltages and predetermined time periods to the current ambient temperature. This reliably prevents the development of mechanical wear and noise, particularly considering temperature-dependent material changes.
  • In principle, different ambient temperatures can be used in the reference phase. According to a preferred embodiment of the invention, however, the plurality of ambient temperatures in the reference phase is altered from -40°C to 85°C. This wide range of temperatures ensures that the method for operating the electronic door actuation arrangement according to the invention is tested and improved for extreme environmental conditions. One technical advantage is that it ensures the electronic door actuation arrangement remains functional and reliable in both very cold and very hot climates.
  • In this context, according to a particularly preferred further embodiment of the invention, it is provided that the first voltage, the second voltage, the third voltage and the predetermined drive time period, the predetermined brake time period and the predetermined close time period are determined by interpolating the current ambient temperature from the plurality of ambient temperatures in conjunction with interpolating the required first voltage, the required second voltage, the required third voltage and the drive time period, the brake time period and the close time period of the reference actuation series, or by using the nearest ambient temperature from the plurality of ambient temperatures in conjunction with the nearest required first voltage, the required second voltage, the required third voltage and the drive time period, the brake time period and the close time period of the reference actuation series. This method allows for precise adjustment based on the voltages and predetermined time periods for operating the electronic door actuation arrangement at the current ambient temperature. One technical advantage is that it enhances the adaptability and performance of the electronic door actuation arrangement, ensuring improved moveability of the first actuating member regardless of variations in temperature.
  • In principle, only the first voltage, the second voltage and the third voltage can be used to move the first actuating member from the open position to the main rest position via the pre-ratchet position. According to a preferred embodiment of the invention, however, the electric motor is driven with the first voltage for the predetermined drive time period up to a fourth voltage, wherein the first voltage is different from the fourth voltage. This additional voltage step provides finer control over the first actuating member's movement. One technical advantage is the ability to further reduce mechanical stress and improve the transition steps between different movements.
  • In accordance with a particularly preferred further embodiment of the invention, the fourth voltage is lower than the first voltage and higher than the second voltage. This ensures that the method for operating the electronic door actuation arrangement according to the invention avoids abrupt changes in voltage. One technical advantage is the smooth movement of the first actuating member, reducing the risk of mechanical failures and noise.
  • In general, it is not necessary to bring the electric motor to a standstill when the pre-ratchet position is reached. According to another preferred embodiment of the invention, however, the fourth voltage is reduced until the electric motor is at a standstill for reaching the pre-ratchet position upon reaching the second voltage, wherein the second voltage is the base voltage corresponding to the short-circuit voltage. This controlled reduction in voltage ensures that the electric motor stops precisely at the pre-ratchet position. One technical advantage is the precise positioning of the first actuating member with respect to the second actuating member, enhancing the reliability and accuracy.
  • Similarly, according to a preferred embodiment of the invention, if the second voltage is negative, the voltage is increased starting from the second voltage for the predetermined brake time period up to a fifth voltage, wherein the fifth voltage is the base voltage corresponding to the short-circuit voltage. This step ensures that the electric motor is gently restarted after reaching a standstill in the pre-ratchet position the brake time period. One technical advantage is the smooth transition between the brake and close steps, reducing mechanical stress.
  • According to a preferred embodiment of the invention, the electric motor is driven with the third voltage for the predetermined close time period up to a sixth voltage, wherein the first actuating member is in the main ratchet position when the sixth voltage is reached, and the third voltage is different from the sixth voltage. This step ensures a precise final movement to the main ratchet position. One technical advantage is the secure and reliable movement of the first actuating member with respect to the second actuating member, reducing the risk of incomplete engaging.
  • In general, the voltages can be changed in different ways. According to a preferred embodiment of the invention, however, the third voltage is achieved by continuously increasing the second voltage. This continuous increase ensures a smooth and controlled transition. One technical advantage is the reduction of mechanical stress and noise, providing a quieter and more durable method according to the invention.
  • In principle, different voltages can be applied in the open position and the main ratchet position. According to a preferred embodiment of the invention, however, the electric motor is at the base voltage corresponding to the short-circuit voltage in the open position and the main ratchet position of the first actuating member. This ensures that the electric motor is effectively turned off when not in use. One technical advantage is the reduction of energy consumption and wear on the electric motor.
  • According to a preferred embodiment of the invention, the first actuating member moves from the main ratchet position via the pre-ratchet position to the open position with a second direction of rotation opposite to a first direction of rotation, the first direction of rotation being the direction of rotation to move the first actuating member from the open position via the pre-ratchet position into the main ratchet position, and the open position is reached starting from the main ratchet position by performing the method steps above. This reverse movement ensures that the door can be opened as smoothly as it is closed. One technical advantage is the consistent performance of the electronic door actuation arrangement in both directions.
  • In general, it is possible to design the electronic door actuation arrangement in different ways. According to a preferred embodiment of the invention, however, the electronic door actuation arrangement is an electronically actuated door latch, wherein the first actuating member is a catch, and the second actuating member is a striker. The striker may be understood as a mechanical component that holds the door in place, and the catch as a part that engages with the striker. This arrangement provides a robust mechanical interlock, ensuring secure door locking. This arrangement provides a robust mechanical interlock, ensuring secure door locking.
  • The invention further concerns an electronic door actuation arrangement for a vehicle, comprising a control unit, an electric motor, a first actuating member and a corresponding second actuating member, wherein the first actuating member is rotationally coupled to the electric motor for being moved from an open position via a pre-ratchet position into a main ratchet position with respect to the second actuating member, the control unit is connected to the electric motor and the first actuating member and the second actuating member for signal transmission, and the control unit is configured for performing the method for operating the electronic door actuation arrangement according to any one of the previous claims. A control unit can be understood as an electronic device that manages the operation of the electric motor and the first actuating member with respect to the second actuating member based on predefined instructions given by the method according to the invention as described above. One technical advantage is the integrated control and coordination of the electronic door actuation arrangement, ensuring reliable and efficient operation.
  • The invention relates also to the use of the electronic door actuation arrangement on the door of a vehicle.
  • Further implementations and advantages of the method can be derived by the person skilled in the art from the method for operating the electronic door actuation arrangement as described before.
  • Brief description of drawings
  • These and other aspects of the invention will be apparent from and elucidated with reference to the implementation described hereinafter.
  • In the drawings:
  • Fig. 1
    schematically depicts a scheme of a method for operating an electronic door actuation arrangement according to a preferred embodiment of the invention, and
    Fig. 2
    schematically depicts a scheme of an electronic door actuation arrangement according to a preferred embodiment of the invention.
  • Fig. 1 now schematically depicts a method for operating an electronic door actuation arrangement 1 on a door of a vehicle. The electronic door actuation arrangement 1 is an electronically actuated door latch, wherein a first actuating member 3 is a catch and a corresponding second actuating member 4 is a striker. Fig. 2 shows that the electronic door actuation arrangement 1 also has an electric motor 2 and a control unit 5 connected to the electric motor 2 and the first actuating member 3 and the second actuating member 4 for signal transmission.
  • The first actuating member 3 is rotationally coupled to the electric motor 2, such that a rotation of the electric motor 2 moves the first actuating member 3 in relation to the second actuating member 4 from an open position via a pre-ratchet position to a main ratchet position. In a first step S1, starting from the open position, the electric motor 2 is driven with a first voltage of 6 V for a predetermined drive time period of 50 ms up to a fourth voltage of 5 V. In a second step S2, the fourth voltage is reduced until the electric motor 2 is at a standstill for reaching the pre-ratchet position upon reaching the second voltage, being a base voltage corresponding to a short-circuit voltage at 0 V. This base voltage is hold for a predetermined brake time period of 5 ms. In the last step S3, the electric motor 2 is driven with the third voltage of 3 V for the predetermined close time period of 10 ms up to a sixth voltage of 2 V until the first actuating member 3 is in the main ratchet position and engages the second actuating member 4.
  • While the invention has been illustrated and described in detail in the drawings and foregoing description, such illustration and description are to be considered illustrative or exemplary and not restrictive; the invention is not limited to the disclosed implementations. Other variations to be disclosed implementations can be understood and effected by those skilled in the art in practicing the claimed invention, from a study of the drawings, the disclosure, and the appended claims. In the claims, the word "comprising" does not exclude other elements or steps, and the indefinite article "a" or "an" does not exclude a plurality. The mere fact that certain measures are recited in mutually different dependent claims does not indicate that a combination of these measures cannot be used to advantage. Any reference signs in the claims should not be construed as limiting scope.
  • List of reference symbols
  • 1
    Electronic door actuation arrangement
    2
    electric motor
    3
    first actuating member
    4
    second actuating member
    5
    control unit

Claims (15)

  1. Method for operating an electronic door actuation arrangement (1), comprising an electric motor (2), a first actuating member (3) and a corresponding second actuating member (4), wherein
    the first actuating member (3) is rotationally coupled to the electric motor (2) for being moved from an open position via a pre-ratchet position into a main ratchet position with respect to the second actuating member (4), comprising the following method steps:
    S1) in the open position, driving the electric motor (2) with a first voltage for a predetermined drive time period,
    S2) reducing the first voltage until the first actuating member (3) is in the pre-ratchet position upon reaching a second voltage,
    S3) driving the electric motor (2) with a third voltage until the first actuating member (3) is in the main ratchet position, wherein the third voltage is lower than the first voltage.
  2. Method according to the previous claim, wherein the second voltage is negative, positive or a base voltage corresponding to a short-circuit voltage.
  3. Method according to any one of the previous claims, wherein the first voltage is at least 6 V, the second voltage is at most 1 V and the third voltage is at most 4 V.
  4. Method according to any one of the previous claims, wherein the second voltage is maintained for a predetermined brake time period, and
    the third voltage is maintained for a predetermined close time period.
  5. Method according to the previous claim, comprising the following further method steps:
    S1a) in a reference phase, exposing the electronic door actuation arrangement (1) to a plurality of different ambient temperatures, and for each of the ambient temperatures of the plurality of ambient temperatures:
    S1b) actuating the open position, the pre-ratchet position, and the main ratchet position,
    S1c) detecting a required first voltage and a required second voltage to reach the pre-ratchet position and a required third voltage to reach the main ratchet position, as well as a drive time period, a brake time period and a close time period, and
    S1d) storing the required first voltage, the required second voltage and the required third voltage as well as the drive time period, the brake time period and the close time period with the respective ambient temperature of the plurality of ambient temperatures in a reference actuation series, and
    S1e) in a normal operation phase downstream of the reference phase, comparing a current ambient temperature of the electronic door actuation arrangement with the plurality of ambient temperatures of the reference actuation series, and
    S1f) selecting the first voltage, the second voltage and the third voltage from the required first voltage, the required second voltage and the required third voltage, and the by selection predetermined drive time period, the predetermined brake time period and the predetermined close time period on the basis of the comparison, and subsequently performing the steps S1 to S3.
  6. Method according to the preceding claim, wherein the first voltage, the second voltage, the third voltage and the predetermined drive time period, the predetermined brake time period and the predetermined close time period are determined by interpolating the current ambient temperature from the plurality of ambient temperatures in conjunction with interpolating the required first voltage, the required second voltage, the required third voltage and the drive time period, the brake time period and the close time period of the reference actuation series, or
    by using the nearest ambient temperature from the plurality of ambient temperatures in conjunction with the nearest required first voltage, the required second voltage, the required third voltage and the drive time period, the brake time period and the close time period of the reference actuation series.
  7. Method according to any one of the previous claims, wherein step S1 is instead:
    S1) driving the electric motor (2) with the first voltage for the predetermined drive time period up to a fourth voltage, wherein the first voltage is different from the fourth voltage.
  8. Method according to the previous claim, wherein step S2 is instead:
    S2) reducing the fourth voltage until the electric motor (2) is at a standstill for reaching the pre-ratchet position upon reaching the second voltage, wherein the second voltage is the base voltage corresponding to the short-circuit voltage.
  9. Method according to the previous claim, wherein in step S3 instead:
    S3) driving the electric motor (2) with the third voltage for the predetermined close time period up to a sixth voltage, wherein the first actuating member (3) is in the main ratchet position when the sixth voltage is reached, and the third voltage is different from the sixth voltage.
  10. Method according to the previous claim, wherein the third voltage is achieved by continuously increasing the second voltage.
  11. Method according to any one of the previous claims, wherein the electric motor (3) is at the base voltage corresponding to the short-circuit voltage in the open position and the main ratchet position of the first actuating member (3).
  12. Method according to any one of the previous claims, wherein the first actuating member (3) moves from the main ratchet position via the pre-ratchet position to the open position with a second direction of rotation opposite to a first direction of rotation,
    the first direction of rotation being the direction of rotation to move the first actuating member (3) from the open position via the pre-ratchet position into the main ratchet position, and
    the open position is reached starting from the main ratchet position by performing steps S3 to S1.
  13. Method according to any one of the previous claims, wherein the electronic door actuation arrangement (1) is an electronically actuated door latch, wherein the first actuating member (3) is a catch and the second actuating member (4) is a striker.
  14. Electronic door actuation arrangement (1) for a vehicle, comprising a control unit (5), an electric motor (2), a first actuating member (3) and a corresponding second actuating member (4), wherein
    the first actuating member (3) is rotationally coupled to the electric motor (2) for being moved from an open position via a pre-ratchet position into a main ratchet position with respect to the second actuating member,
    the control unit (5) is connected to the electric motor (2) and the first actuating member (3) and the second actuating member (4) for signal transmission, and
    the control unit (5) is configured for performing the method for operating the electronic door actuation arrangement (1) according to any one of the previous claims.
  15. Use of the electronic door actuation arrangement (1) according to the previous claim on the door of a vehicle.
EP24183771.5A 2024-06-21 2024-06-21 Method for operating an electronic door actuation arrangement Pending EP4667687A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP24183771.5A EP4667687A1 (en) 2024-06-21 2024-06-21 Method for operating an electronic door actuation arrangement
PCT/EP2025/067047 WO2025262114A1 (en) 2024-06-21 2025-06-18 Method for operating an electronic door actuation arrangement

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP24183771.5A EP4667687A1 (en) 2024-06-21 2024-06-21 Method for operating an electronic door actuation arrangement

Publications (1)

Publication Number Publication Date
EP4667687A1 true EP4667687A1 (en) 2025-12-24

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ID=91664142

Family Applications (1)

Application Number Title Priority Date Filing Date
EP24183771.5A Pending EP4667687A1 (en) 2024-06-21 2024-06-21 Method for operating an electronic door actuation arrangement

Country Status (2)

Country Link
EP (1) EP4667687A1 (en)
WO (1) WO2025262114A1 (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6359762B1 (en) * 1998-11-09 2002-03-19 Mitsui Kinzoku Kogyo Kabushiki Kaisha Control method of sliding a vehicle door by a powered sliding device
US20100270815A1 (en) * 2009-04-28 2010-10-28 Aisin Seiki Kabushiki Kaisha Opening and closing member control device
US20230332455A1 (en) * 2022-04-19 2023-10-19 GM Global Technology Operations LLC Power panel system and control

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6359762B1 (en) * 1998-11-09 2002-03-19 Mitsui Kinzoku Kogyo Kabushiki Kaisha Control method of sliding a vehicle door by a powered sliding device
US20100270815A1 (en) * 2009-04-28 2010-10-28 Aisin Seiki Kabushiki Kaisha Opening and closing member control device
US20230332455A1 (en) * 2022-04-19 2023-10-19 GM Global Technology Operations LLC Power panel system and control

Also Published As

Publication number Publication date
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