• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    Lock control system comprising a first actuator moving between a first stable state (ES1) in which a lock system is operated, and a disengaged position (ED) in which the lock system is deactivated, and a second actuator moving between a rest position in which the second actuator does not interact with the first actuator, and an active position in which the second actuator is forced against the first actuator, the first actuator comprising a first socket for a head of the second actuator which when it is in the active position and its implementation is maintained blocks the first actuator in the first disengaged position (ED), the first actuator further comprising a second socket, shaped, with the head of the second actuator, to block the first actuator in a second stable state (ES2) in which the lock system is deactivated.
    公开号:FR3079902A1
    申请号:FR1853100
    申请日:2018-04-10
    公开日:2019-10-11
    发明作者:Aurelien Renault；Benoit Tremeau
    申请人:PSA Automobiles SA；
    IPC主号:
    专利说明:

    PARKING LOCK CONTROL SYSTEM The invention relates to the field of gearbox controls for a motor vehicle, and more specifically to the field of parking lock control which can be electrically controlled and associated with a gearbox, in particular an automatic gearbox.
    We know parking lock controls by mechanical cable actuated by the lever of an automatic gearbox, in the passenger compartment.
    But the gearboxes are more and more electrified, and automatic, and the mechanical controls are supplanted by electrical controls ("by wire").
    The parking lock actuation system must include at least one stable position, that is to say that does not require electrical energy to last over time. Systems with a single stable position are known (monostable systems) and systems with two stable positions are also known (bistable systems).
    The invention is an evolution of a monostable system, which in its nominal operation, according to the prior art, has a default position in which the parking lock is engaged and maintained. This default position is that reached in the absence of power supply to the actuation system.
    We are faced with a difficulty in handling the vehicle during the delivery of the gearbox to the terminal assembly plant. It is necessary to move the vehicle at this time, but the gearbox and the parking lock actuation system are not supplied with energy. It is known to manually access the parking lock control, which is tedious, and requires that an access path and a manual outlet have been provided. A tool can also be left in the vehicle. The production line is interrupted at each difficulty.
    The problem also arises in various other life situations, including repairs or overhauls.
    Document DE102014104575_A1 discloses a parking lock with coupling and actuation members movable in translation, with coupling and actuation directions which are transverse to each other.
    To solve the problems mentioned above, a lock control system is proposed comprising a first actuator in movement between a first stable state in which a lock system is implemented, and a first disengaged position in which the lock system is deactivated, and a second actuator in movement between a rest position in which the second actuator does not interact with the first actuator, and an active position in which the second actuator is forced against the first actuator, the first actuator comprising a first socket for a head of the second actuator which, when it is in the active position and its implementation is maintained, blocks the first actuator in the first disengaged position.
    The system is remarkable because the first actuator further comprises a second socket, shaped jointly, with the head of the second actuator, to interact with it so as to block the first actuator in a second stable state in which the system lock is disabled.
    This provides a stable state of the parking lock, requiring no energy input, and in which the parking lock is disengaged.
    Optionally and advantageously, the system can have the following characteristics:
    - The first actuator is in translational movement in a first direction between the first stable state the first disengaged position;
    - The second actuator is in translational movement in a second direction between the rest position and the active position;
    - The second stable state is reached by a stroke of the first actuator from the engaged position longer than that necessary to reach the first disengaged position;
    - The first and second actuators are recalled respectively in their first stable state and their rest position by springs;
    - The first actuator comprises a rod between a head for actuation of the lock system and a jack for the displacement of the rod and the head, the first and second sockets being in the form of two notches made in pairs distinct heights of the rod;
    - The first and the second actuators are electric or hydraulic.
    The invention also provides a parking lock for a motor vehicle with an automatic gearbox comprising a control system as mentioned above.
    The invention also provides a motor vehicle with an automatic gearbox comprising such a parking lock.
    The invention will be better understood, and other objects, characteristics, details and advantages thereof will appear more clearly in the explanatory description which follows, made with reference to the appended drawings given solely by way of example illustrating a embodiment of the invention and in which:
    - Figure 1 is a view of the system in an engagement position of the parking brake;
    - Figure 2 is a view of the system in an unlocking position of the parking brake with supply of electricity to the actuators;
    - Figure 3 is a view of the system in an original stable position for unlocking the parking brake without supplying electricity to the actuators;
    - Figure 4 is a schematic view of the states of the system.
    In Figure 1 there is shown a parking lock control system according to the invention, in a first position.
    This control system comprises a first actuator 1 in translational movement in a direction D1, and a second actuator 2 also in translational movement in a direction D2.
    These two actuators are electric (or hydraulic) actuators, and their translational movements are made transversely to one another, and more precisely perpendicular to one another.
    They both include control rods directed in the direction of translation. The control rod of the first actuator 1 is referenced 10 and the control rod of the second actuator 2 is referenced 20. Each of these rods has a head at its free end. The head of the rod 10 of the actuator 1 is referenced 11 and has a function for actuating the parking brake, and the head of the rod 20 of the actuator 2 is referenced 21 and has a function of interaction with the rod 10 for its blocking.
    The actuator 1 further comprises a cylinder 18 with return means which are constituted by a spring 19.
    The actuator 2 comprises a cylinder 28 with return means constituted by a spring 29.
    The cylinders are hydraulic cylinders or solenoid cylinders (electromagnetic).
    The control system comprises a finger 4, having a structure of a cam on which the head 11 presses to make it move in translation in a direction perpendicular to the direction of translation of the rod 10 of the first actuator 1.
    The finger 4 by its translational movement locks or releases the parking lock 3.
    In the position of the control system shown in Figure 1, each of the two actuators 1 and 2 is not supplied with energy, and therefore adopts its rest position, defined by the return means, elastic, spring type , with which they are provided. The first actuator 1 is in the stable position, or first stable state ES1. The second actuator 2 is in the rest position PR.
    It appears from this situation that the first actuator 1 is moved in the direction of the finger 4, which corresponds to its rest position, that the actuator 2 is moved to move away from the actuator 1 and more precisely from its rod 10, which corresponds to its rest position.
    Therefore, the actuator 2 has no influence on the position of the actuator 1, which is free, and which pushes the finger 4, resulting in the locking of the parking lock 3 and the immobilization of the vehicle when stationary, which can thus remain parked for a long time without consuming electrical (or hydraulic depending on the type of actuator) energy for the actuator 1. The return energy of the spring 19 is sufficient for engagement and holding the parking lock.
    In Figure 2, at the request of the user of the motor vehicle the first actuator 1 and the second actuator 2 are both supplied with energy and move, respectively for the actuator 1 away from the finger 4 , to the left of the figure, following a stroke C1, and for the actuator 2 while approaching the rod 10 of the actuator 1, towards the top of the figure. The second actuator 2 is forced against the first actuator 1.
    A first consequence of these movements is that the parking brake 3 is deactivated (the actuator 1 is in a disengaged state or position ED), and that the vehicle can be set in motion to travel on the road, powered by its powertrain and led by the driver.
    A second consequence of these movements is that the head 21 of the rod 20 of the actuator 2 enters a socket 15 in the form of a notch formed on the surface of the rod 10 on the side facing the actuator 2. This reaches an active position PA.
    The insertion of the head 21 into the socket 15 has the effect of blocking the movement of the rod 10 of the actuator 1. This blocking is a securing effect of the deactivation of the parking brake. Indeed, in the event of failure of the excitation circuit of the first actuator 1, the second actuator 2 would maintain the first actuator 1 in position.
    By cons, in the event that the power supply to the two actuators 1 and 2 is cut, for example for parking, the head 21 of the actuator 2, under the effect of the spring 29, is withdraws from the socket 15 which does not oppose resistance to it and the actuator 1 is then free to return to the position of FIG. 1, which it does spontaneously by the effect of the spring 19, then engaging the parking brake 3.
    In Figure 3, there is shown the parking lock control system presented in the preceding figures in an original locked position for deactivation of the actuators.
    The actuator 1 has followed relative to the position in which it is shown in Figures 1 and 2 a translation to the left bringing it into a position even further away from the finger 4 than that shown in Figure 2. The race is a race C2 from the position of figure 1, with C2> C1.
    After the actuator 1 has followed this stroke and thus reaches an intermediate position PI1, the actuator 2 is supplied with energy so that its head 21 is inserted into a socket on the rod 10 of the actuator 1. It reaches its active position PA, already described in connection with FIG. 2.
    Given the additional stroke made by the actuator 1 so that it moves away from the parking finger 4, the head 21 is inserted into a socket 16 of the lateral surface of the rod 10 located between the socket 15 and head 11, on the side of the actuator 2 and having the shape of a notch.
    The particularity of the socket 16, compared to the socket 15 is that it is shaped, together with the head 21 so that in case of removal of the power supply of the actuator 1 and the 'actuator 2, a new effect is obtained.
    For the record, in case of removal of the power supply of the two actuators, the actuator 1 is pushed back by its return means (spring 19) towards the finger 4, and the actuator 2 is called back by its return means (spring 29) so as to move away from the rod 10.
    The new effect is that the socket 16 retains the head 21, which is not the case with the socket 15 in the configuration of Figure 2. The two actuators hold each other in the positions of Figure 3, namely the stable state ES2 and the active position PA.
    Thus, it is easy in certain situations to put the parking lock in a specific configuration with the disengaged parking lock remaining in this position stably without energy input.
    This feature can be used for certain maintenance operations as well as during the delivery of the gearbox to the vehicle assembly plant.
    To ensure the proper functioning of the system, it is preferable once the position described in Figure 3 reached with the actuators supplied with energy (PU position), first, cut the power to the actuator 1 , so that the socket 16 is well engaged with the head 21 thanks to the return means of the actuator 1, then only in a second time cut the power supply to the actuator 2, this removal of the supply of the actuator 2 having no consequence since the head 21 is retained by the socket 16. The second stable position ES2 is reached.
    It is specified that to leave this specific position and return to nominal mode as represented by FIGS. 1 and 2, the solution is to supply the actuators 1 and 2 with energy (or only the actuator 1), this making it possible to release the rod 20 from the actuator 2, more precisely its head 21 which leaves the socket 16 and its engagement therewith so that the actuator 2 can return by itself to the rest position, thanks to its means of reminder. We thus reach an intermediate position PI2. Once this is done, the complete return to the unlocked nominal position (state ES1) is done by cutting the power to actuator 1.
    Thus, an additional stroke C2 of the actuator 1 was used, which is used only under certain conditions, and an additional locking system defined by the socket 16 to block the actuator 1 with the control in the disengaged position, or second stable state ES2.
    In Figure 4 is shown the evolutions of the system.
    The nominal positions thereof are represented by ES1 (stable state no. 1, represented in FIG. 1, and in which the lock is put in place) and ED (disengaged state, represented in FIG. 2, in which the actuators are kept supplied with energy). The stroke of the actuator 1 between ES1 and ED is a distance C1, parallel to the rod 10, under the effect of the actuation of the two actuators 1 and 2. The passage from ES1 to ED is naturally reversible by a reverse movement , caused by the return means of the actuators 1 and 2, after stopping the electrical (or hydraulic) actuation of the actuators 1 and 2.
    From state ES1, a stroke C2 of the actuator 1, under the effect of the actuation of the actuator 1, parallel to the rod 10 and longer than the stroke C1 achieves an intermediate position PI1, from which the actuation of the actuator 2 makes it possible to reach a stable state ES2, in which the energy supplies of the two actuators can be interrupted, starting with that of the actuator 1.
    Then, by restoring the power supply to the actuator 1, it is possible to reach an intermediate position PI2, from which the interruption of the supply to the actuator 1 makes it possible to return to the 'stable state ES1, corresponding to the locking position.
    It is thus possible to set up a gearbox which under special conditions can have a stable operating mode with a stationary system despite the absence of energy supply (state ES2), which one can of course easily be brought back to conventional operation with automatic engagement of the parking lock in the event of a power cut (state ES1) as is the case from the configuration in FIG. 2. Optionally, it is possible to pass from ES2 to ED, in a controlled manner.
    The invention therefore allows without the need to add additional components to meet the needs corresponding to life situations encountered without requiring specific manual actions of the user.
    Quite remarkably, the solution allows the delivery of an unlocked automatic gearbox in ES2 state. It does not require a holding tool to do this. It also allows, during the life of the vehicle and for example for a maintenance operation, to return the gearbox to the unlocked position, as for the delivery mode, while removing the energy supply to the actuators.
    权利要求:
    Claims (9)
    [1" id="c-fr-0001]
    1. Lock control system comprising a first actuator (1) moving between a first stable state (ES1) in which a lock system (3) is implemented, and a first disengaged position (ED) in which the system lock (3) is deactivated, and a second actuator (2) moving between a rest position (PR) in which the second actuator (2) does not interact with the first actuator (1), and an active position ( PA) in which the second actuator (2) is forced against the first actuator (1), the first actuator (1) comprising a first socket (15) for a head of the second actuator (21) which when in the active position ( PA) and that its implementation is maintained blocks the first actuator (1) in the first disengaged position (ED), characterized in that the first actuator (1) further comprises a second socket (16), shaped, together with the head of the second actuator (2), for int interact with it so as to block the first actuator (1) in a second stable state (ES2) in which the lock system (3) is deactivated.
    [2" id="c-fr-0002]
    2. Lock control system according to claim 1, characterized in that the first actuator (1) is in translational movement in a first direction (D1) between the first stable state (ES1) the first disengaged position (ED).
    [3" id="c-fr-0003]
    3. Lock control system according to claim 1 or claim 2, characterized in that the second actuator (2) is in translational movement in a second direction (D2) between the rest position (PR) and the active position (PA).
    [4" id="c-fr-0004]
    4. Lock control system according to one of claims 1 to 3, characterized in that the second stable state (ES2) is reached by a stroke (C2) of the first actuator from the longer engaged position (ES1) than that necessary (C1) to reach the first disengaged position (ED).
    [5" id="c-fr-0005]
    5. Lock control system according to one of claims 1 to 4, characterized in that the first and second actuators (1,2) are recalled respectively in their first stable state (ES1) and their rest position (PR ) by springs (19, 29).
    [6" id="c-fr-0006]
    6. Lock control system according to one of claims 1 to 5, characterized in that the first actuator (1) comprises a rod (10) between a head (11) for actuation of the lock system (3) and a jack (18) for the displacement of the rod (10) and the head (11), the first and second catches (15, 16) being in the form of two notches formed at two distinct heights of the rod (10 ).
    [7" id="c-fr-0007]
    7. Lock control system according to one of claims 1 to 5, characterized in that the first and second actuators are electrically operated or
    5 hydraulic.
    [8" id="c-fr-0008]
    8. Parking lock for a motor vehicle with automatic gearbox characterized in that it comprises a control system according to one of claims 1 to 7.
    [9" id="c-fr-0009]
    9. Motor vehicle with automatic gearbox characterized in that it comprises a parking lock according to claim 8.
    类似技术:
    公开号 | 公开日 | 专利标题
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    FR3100593A1|2021-03-12|INTERNAL GEAR CONTROL DEVICE WITH ELECTRIC PASSAGE INTERLOCK
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    FR2760412A1|1998-09-11|METHOD AND DEVICE FOR ADJUSTING A CLUTCH CONTROL JACK
    同族专利:
    公开号 | 公开日
    FR3079902B1|2020-03-13|
    WO2019197742A1|2019-10-17|
    EP3775626A1|2021-02-17|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US20140110216A1|2011-06-21|2014-04-24|Daimler Ag|Motor Vehicle Parking Lock Device Having at Least One Locking Element|
    EP2927540A1|2014-04-01|2015-10-07|GETRAG Getriebe- und Zahnradfabrik Hermann Hagenmeyer GmbH & Cie KG|Parking lock system for a motor vehicle transmission and motor vehicle transmission using the same|
    WO2018192989A1|2017-04-18|2018-10-25|Punch Powertrain N.V.|A hydraulic system for a vehicle, a vehicle transmission, and method for operating a vehicle transmission|
    DE102020117018A1|2020-06-29|2021-12-30|Schaeffler Technologies AG & Co. KG|Parking lock actuation system with locking element held in a form-fitting manner; and a method for controlling the parking lock actuation system|
    DE102020117020A1|2020-06-29|2021-12-30|Schaeffler Technologies AG & Co. KG|Parking lock actuation system with locking element held in a form-fitting manner; and a method for controlling the parking lock actuation system|
    DE102020120619A1|2020-08-05|2022-02-10|Schaeffler Technologies AG & Co. KG|parking lock actuation system|
    DE102020120621A1|2020-08-05|2022-02-10|Schaeffler Technologies AG & Co. KG|Parking lock actuation system and method for operating a parking lock actuation system|
    法律状态:
    2019-03-20| PLFP| Fee payment|Year of fee payment: 2 |
    2019-10-11| PLSC| Search report ready|Effective date: 20191011 |
    2020-03-19| PLFP| Fee payment|Year of fee payment: 3 |
    2021-03-23| PLFP| Fee payment|Year of fee payment: 4 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1853100|2018-04-10|
    FR1853100A|FR3079902B1|2018-04-10|2018-04-10|PARKING LOCK CONTROL SYSTEM|FR1853100A| FR3079902B1|2018-04-10|2018-04-10|PARKING LOCK CONTROL SYSTEM|
    PCT/FR2019/050628| WO2019197742A1|2018-04-10|2019-03-20|Parking lock control system|
    EP19717128.3A| EP3775626A1|2018-04-10|2019-03-20|Parking lock control system|
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