• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
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    • 专利摘要:
    Power emulator (1, 200) for electrical control of transmission system, comprising: - an input member (8, 223), distinct from a clutch pedal (2) and able to be moved in case of actuation of this clutch pedal (2) by a user, - an elastic return system (25) opposing this displacement of the input member (8, 201), the elastic return system (25) ) comprising: at least one cam (26, 72, 226) cooperating with at least one roller (27, 227), one of the cam (26, 72, 226) and the roller (27, 227) moving on along an axis (X) when the input member (8, 201) moves due to the actuation of the clutch pedal (2), and the cooperation between the cam (26, 72, 226 ) and the roller (27, 227) opposing this displacement along the axis (X).
    公开号:FR3034719A1
    申请号:FR1552989
    申请日:2015-04-07
    公开日:2016-10-14
    发明作者:Herve Maurel；Pascal Maurel；Carsten Lauridsen
    申请人:Valeo Embrayages SAS；
    IPC主号:
    专利说明:

    [0001] The present invention relates to the electrical control of a transmission system. The invention applies notably, but not exclusively, to the control of a single or double clutch, the state of which at rest may be normally engaged or normally disengaged, at the control of a transmission synchronizer for manual transmission, at the control of a robotic gearbox, at the control of a manual gearbox with double clutch, or to the control of a coupling clutch of a heat engine with an electric machine when the latter two are part of a propulsion system of a hybrid vehicle.
    [0002] In such a case, the actuation of the clutch pedal is not intended to generate a force that acts mechanically on one or more intermediate elements in order to modify the state of the transmission system, this actuation of the pedal being done against a reaction force, for example exerted by fluid present in a hydraulic control. In the electrical control applications referred to above, no hydraulic control exerting a reaction force on the clutch pedal is used to move an element of the transmission system. It may be desirable to create a reaction force on the pedal during actuation of the latter, that is to say when the user presses on the latter, although this actuation does not act purely mechanically on the condition of the transmission system. Such a reaction effort makes it possible not to destabilize a user more accustomed to hydraulic clutch controls. This reaction effort on the pedal is then recreated by a force emulator. Such a force emulator is for example known from the application DE 10 2008 043 596. According to this application, the clutch pedal carries two cams and each cam interacts with a spring during the actuation of the pedal. Due to this interaction, a reaction force is exerted on the pedal despite the fact that it is integrated with an electric clutch control. Such a force emulator, which has many specific components, including the clutch pedal, is thus expensive and not very interchangeable with a hydraulic control. There is a need for a power emulator for electrical control that is inexpensive and whose implementation, when it is desired to replace a hydraulic control by an electric control, is easy. The invention aims to meet all or part of this need and it achieves it, according to a first aspect, with the aid of a power emulator for electrical control of a transmission system, comprising: a device 3034719 2 input, distinct from a clutch pedal and able to be moved when this clutch pedal is actuated by a user, an elastic return system opposing this movement of the input member , the elastic return system comprising: at least one cam cooperating with at least one roller, one of the cam and the roller moving along an axis when the input member moves because of the actuation of the clutch pedal, and the cooperation between the cam and the roller opposing this movement along the axis. According to this first aspect, the input member of the emulator is distinct from the clutch pedal. The input member is for example articulated on the latter. This articulation is for example a ball or pivot connection. Alternatively, as will be seen later, the input member is not articulated on the clutch pedal, several intermediate components, such as a hydraulic control transmitter cylinder and a hydraulic pipe, then being interposed between them. With such an input member separate from the clutch pedal, it is possible to reuse a hydraulic clutch pedal 15 to cooperate with the emulator. The cost of the emulator and its interchangeability with a hydraulic control are thus improved. We can reuse a standard clutch pedal. The aforementioned displacement along an axis is assessed relative to a given reference. When the aforementioned displacement is that of the cam, the latter undergoes a rectilinear translation along the axis. When this displacement is that of the roller, the latter rolls along this axis. According to the exemplary embodiments of the invention which will be described later, this reference system may be linked to: - a housing of the emulator, or 25 - to a guide articulated on the housing of the emulator, this guide being integral a support of the roller and guiding the translation along the axis of the cam, - a guide articulated on the housing of the emulator, this guide being secured to a support of the cam and guiding the bearing along the axis of the roller. The elastic return system makes it possible to generate the reaction force during the actuation of the clutch pedal. The return system can generate a force with hysteresis, that is to say that for the same position of the clutch pedal, the reaction force is not the same depending on whether the user presses the pedal or as he releases the pedal. The elastic return system exerts for example a reaction force similar to that exerted with a hydraulic control and a clutch in new condition. The elastic return system may be such that the curve force / stroke of the clutch pedal then, for a race 3034719 3 increasing from zero, first a bump and then a hollow. Alternatively, the elastic return system exerts a determined reaction effort to meet ergonomic criteria. The emulator may be purely passive, that is to say that the elastic return system comprises only mechanical elements, such as springs or cams, being devoid of electromechanical elements such as a solenoid valve or any kind of pump. Such an emulator is then particularly cheap. The input member may be articulated on a rod, the latter moving in translation along the axis when the input member moves. In this case, the input member can be used also in hydraulic control, further reducing the cost of the emulator and improving its interchangeability with hydraulic control. The joint is for example a ball joint or pivot. Alternatively, the input member forms a rod moving in translation along the axis when the clutch pedal is actuated. According to a first example of implementation of the first aspect of the invention, the cam is carried by the rod and the roller is pressed against the cam under the effect of an elastic restoring force. According to this first example of implementation, the elastic return system comprises at least one spring whose axis is transverse to the axis of movement of the rod. The axis of the spring is for example an angle exactly equal to 90 ° with the axis of displacement. According to this first example of implementation, the emulator comprises a housing and the spring 20 extends between an end secured to the housing and an end secured to a member pressing on the roller. The spring is in particular a helical spring. For the purposes of the present application, the housing of the emulator is not necessarily an envelope within which the latter is received wholly or partly the emulator. One or more walls assembled without defining a closed space can define a housing according to the invention and only part of the emulator is then disposed in this housing. The housing can be formed by several separate parts assembled together. The cam then moves in translation along an axis, in a reference linked to the housing of the emulator when the input member is articulated on the rod, as already mentioned. One end of the spring is for example fixed on a spring holding piece, this holding piece being received in the housing and stationary relative thereto. The other end of the spring is for example fixed on a movable plate and pressing against the roller. According to this first example of implementation of the invention, the cam can extend on each side of the rod, that is to say on either side of the axis of displacement, and two separate rollers may be provided, each roller being disposed on one side of the rod. Each roller can be pressed against a portion of the cam via an element pressing on it. In such a case, only a helical spring may be provided, this spring applying against an element pressing on one of the rollers. Other rollers may be present, according to this first example of implementation. These rollers can cooperate with the housing of the emulator to guide the movement of the spring. These rollers 5 can also transmit to the housing the force that the cam exerts on them. According to this first example of implementation, the cam portion cooperating with the roller may have a profile successively comprising: a flat section, and a section forming a ramp. As long as the roller cooperates with the flat portion, the reaction force generated by the emulator on the clutch pedal during actuation of the latter is low. On the other hand, when a ramp cooperates with a roller, the reaction force then becomes greater. The respective lengths of the different sections of the profile and / or the slope of the ramp may be chosen during the design of the elastic return system depending on the reaction force that is sought to be applied to the clutch pedal.
    [0003] Still according to this first example of implementation of the invention, the rod may comprise several parts assembled together and moving together in translation relative to the aforementioned referential, the latter being optionally linked to the housing or to an articulated guide on this case. As already mentioned, this rod can be distinct from the input member and articulated on the latter.
    [0004] The rod comprises, for example: a hollow slide articulated on the input member of the emulator; a rod, one end of which is arranged in a housing formed in the slide and the other end of which can move about beyond a ring fixed on the housing, the cam being disposed around a portion of the rod disposed outside the slide.
    [0005] A position sensor may be provided, this sensor being in particular integrated in the housing of the emulator. This position sensor measures for example the displacement of the end of the rod. The information provided by this sensor is then used to generate a set point for the electric actuator changing the state of the transmission system. According to a second example of implementation of the first aspect of the invention, the cam is still carried by the rod and the roller is always pressed against the cam under the effect of an elastic restoring force which comprises at least one spring whose axis is transverse to the axis of movement of the rod. The axis of the spring is for example with the axis of displacement an angle exactly equal to 90 °, or approximately equal to 90 °. This spring is in particular a helical spring.
    [0006] According to this second example of implementation, the emulator comprises a housing and two levers, each lever being articulated on the housing and carrying a roller. Each roller is for example rotatable about an axis fixed on one of the levers. Each lever is for example arranged on one side of the axis of displacement, that is to say laterally with respect to the axis of displacement. The cam is then surrounded by the rollers. Each roller can cooperate with a portion of the cam defined by a lateral face of the latter during the movement of the latter along the axis, and the spring is interposed between the levers, bearing on each of them. According to this second example of implementation, the movement of the cam tends to exert a force to move the levers away from each other due to the cooperation of the cam with each roller. The spring, which is interposed between the two levers, exerts a force opposing this spacing of the levers, thereby providing the reaction force during the actuation of the clutch pedal. The elastic return system comprises for example two separate springs, each spring 15 bearing on each lever and being disposed only on one side of the rod. According to this second example of implementation, the rod may be a part of the input member. In this case, the rod moves with the aid of a guide articulated on the housing of the emulator, for example via a ball joint or pivot connection. In this case, the movement in translation of the cam is assessed in a reference linked to the guide. Alternatively, the rod is distinct from, and hinged to, the input member. In this case, the displacement along the axis of the cam is appreciated relative to a reference linked to the housing. The stiffness of the springs can be chosen during the design of the elastic return system depending on the reaction force that is to be applied to the clutch pedal. According to this second example of implementation, each lever can be formed using a piece of sheet metal folded with stampings or bends. These folds thus formed can maintain the axis of each roller. The articulation of a lever on the housing is for example a pivot connection. This articulation is obtained in particular at each lever, through a cut sheet or with a folded-welded wire, to form a closed rectangle.
    [0007] These articulations of the levers on the casing allow the transmission to the casing of the axial forces exerted by the cam on the rollers during the actuation of the clutch pedal. Alternatively, the transmission of these forces to the housing can be effected via additional elements interposed between the housing and the levers, for example flexible blades. According to this second example of implementation, a position sensor may be provided, this sensor being notably integrated into the emulator housing. This position sensor for example measures the displacement of the rod. The information provided by this sensor is then used to generate a set point for the electric actuator changing the state of the transmission system. According to a third example of implementation of the first aspect of the invention, the cam is still carried by the rod and the roller is pressed against the cam under the effect of an elastic restoring force. The elastic return system comprises according to this third example of implementation a leaf spring (s) carrying the roller. The cam may have two lateral faces, each face extending on one side of the axis of displacement and the elastic return system may comprise two rollers, each roller cooperating with a portion of the cam defined by one of said side faces.
    [0008] Each roller may be rotatable about an axis, which axis is attached to a roller support. The cam moves along the axis and this movement is effected against the force exerted by the rollers on the cam. According to a first variant, the leaf spring is made in one piece using a folded sheet, and this leaf spring also forms the roller support. In a plane containing the axis of displacement, this leaf spring may have a U-shape, comprising a back and two branches. Each end of a branch can carry an axis of a roller while the rod extends through the back. According to this first variant, the return force exerted on the cam depends on the choice of the sheet 20 in which the leaf spring is formed. The stiffness of this sheet can be chosen during the design of the elastic return system depending on the reaction force that is to be applied to the clutch pedal. According to a second variant, several separate blades succeeding each other around the axis of displacement form a leaf spring. In this case, a roller support other than the leaf spring may be provided. As a variant, two blades that are symmetrical with respect to the axis of displacement can act as roller supports. Still according to this second variant, the leaf spring is then laminated. The different blades can rub on each other, generating hysteresis. According to this third example of implementation, the rod may be a part of the input member.
    [0009] In this case, the rod moves with the aid of a guide articulated on the housing of the emulator, for example via a ball joint or pivot connection. In this case, the displacement along the axis of the cam is appreciated relative to a reference linked to this guide. Alternatively, the rod is distinct from the input member, and articulated on the latter. In this case, the displacement along the axis of the cam is appreciated relative to a reference linked to the housing.
    [0010] Still according to this third exemplary implementation, a position sensor may be provided, this sensor being in particular integrated into the housing of the emulator. This position sensor for example measures the displacement of the cam. The information provided by this sensor is then used to generate a set point for the electric actuator changing the state of the transmission system.
    [0011] According to a fourth example of implementation of the first aspect of the invention, the roller is carried by the rod and the cam is pressed against the roller. According to this fourth example, the rod carries the axis of the roller, the roller being rotatable about the axis. The axis of the roller then moves along the aforementioned axis of displacement, so that the roller rolls along this axis of displacement.
    [0012] According to this fourth example, the elastic return system may comprise a leaf spring whose surface defines the cam cooperating with the roller. The leaf spring can be made in one piece using a folded sheet. Two rollers can be carried by the rod, each roller being disposed on a different side of the axis of displacement. In a plane containing the axis of movement, the leaf spring may have a U-shape, including a back and two branches. Each branch can form a cam portion cooperating with one of the rollers while the rod extends through the back. The return force exerted by the cams on the rollers depends on the choice of the sheet in which the leaf spring is formed. The stiffness of this sheet can be chosen during the design of the elastic return system depending on the reaction force that is to be applied to the clutch pedal. According to this fourth example of implementation, the rod may be a part of the input member. In this case, the rod moves with the aid of a guide articulated on the housing of the emulator, for example via a ball joint or pivot connection. In this case, the rolling along the axis of the rollers is appreciated relative to a reference linked to the guide. Alternatively, the rod is distinct from and articulated to the input member. In this case, the rolling along the axis of the rollers is appreciated with respect to a reference linked to the housing. Still according to this fourth example of implementation, a position sensor may be provided, this sensor being in particular integrated into the housing of the emulator. This position sensor for example measures the displacement of the cam. The information provided by this sensor is then used to generate a setpoint for the electric actuator changing the state of the transmission system. In all the foregoing, when the input member is distinct from the rod and hinged on it, the reference relative to which the displacement of the roller or the cam is assessed can be linked to the housing, the latter supporting the stem.
    [0013] Still in all the foregoing, when a portion of the input member defines the rod, the reference relative to which the displacement of the roller or cam is judged can be related to the aforesaid guide. In all the above, each roller is guided in rotation on its axis by a ball bearing or needle, or by a plain bearing. The choice of this guidance in rotation of the rollers may depend on the hysteresis that it is desired to confer on the reaction force exerted on the clutch pedal by the emulator when it is actuated. In the case where each roller is guided in rotation by a sliding bearing, when it is desired to provide such a hysteresis, it is possible, for example, to increase the coefficient of friction of the bearings, by choosing the material used, and / or increase the ratio between diameter of a bearing and outer diameter of the roller guided in rotation by the latter. In all the foregoing, an additional resilient return member such as a coil spring may be interposed between the input member and the emulator housing. This additional elastic return member may have an end bearing against the housing and an end 15 bearing against the input member, and the additional elastic return member then extends between said ends. In such a case, the input member may be separate from the rod and articulated on the latter. By varying, the input member defines the rod. Such an additional elastic return member is in particular provided in the fourth example of implementation of the first aspect of the invention.
    [0014] When the additional elastic return member is integrated in the fourth example of implementation of the first aspect of the invention, it can act in parallel with the leaf spring defining the cam cooperating with the roller or rollers. Such additional spring can thus generate a portion of the reaction force on the clutch pedal when the latter is actuated. The presence of a coil spring in parallel provides in particular the following advantages: - reduction of the stresses in the leaf spring with identical dimensions, - reduction of the forces on the roller or rollers, - reduction of the hysteresis of the stress of reaction exerted on the clutch pedal when it is actuated, in particular in the first part of the stroke thereof, - reduction of the total weight of the elastic return system, because of the higher mass / energy ratio which the coil spring with respect to the leaf spring, - safe operation, since the coil spring still generates at least partly the reaction force on the clutch pedal if the leaf spring is malfunctioning. According to a second aspect of the invention, the latter also relates to a force emulator for electrical control of transmission system, comprising: an input member, distinct from a clutch pedal and capable of to be moved upon actuation of this clutch pedal by a user, - a return system opposing this movement of the input member, the return system comprising: - a chamber filled with a fluid, - a piston movable in the chamber under the effect of the displacement of the input member and sealingly defining two compartments in the chamber, and - a communication channel between the two compartments, this channel being preferably arranged outside the chamber and having an adjustable flow so as to vary the pressure opposing the movement of the piston in the chamber when the clutch pedal is actuated. Such an emulator makes it possible, by modifying the flow rate in the channel, to vary the pressure opposing the displacement of the piston in the chamber. It is thus possible to dynamically vary the reaction force applied to the clutch pedal when it is actuated. Such a possibility makes it possible to adapt the stroke-effort characteristic to the wishes of an automobile manufacturer, to the type of user, or according to the circumstances of use of the vehicle on which the transmission system is embarked. Such an emulator may be described as an asset, comprising one or more electromechanical components, and not only mechanical components.
    [0015] Such an active emulator can generate a reaction force with hysteresis, that is to say that for the same position of the clutch pedal, the reaction force is not the same depending on whether the user supports on the pedal or as it releases the pedal. The emulator according to this second aspect of the invention exerts for example a reaction force similar to that exerted with a hydraulic control and a clutch in new condition.
    [0016] The active emulator is for example such that the curve force / stroke of the clutch pedal then has, for a race increasing from scratch, first a bump and then a hollow. Alternatively, the active emulator according to the second aspect of the invention exerts a determined reaction effort to meet ergonomic criteria. According to this second aspect, the input member of the emulator is distinct from the clutch pedal. The input member can thus be articulated on the latter. This articulation is for example a ball joint or pivot. Alternatively, as will be seen later, the input member is not articulated on the clutch pedal, several intermediate components, such as a hydraulic control transmitter cylinder and a hydraulic pipe being then interposed between them.
    [0017] With such an input member separate from the clutch pedal, it is possible to reuse a hydraulic control clutch pedal to cooperate with the emulator. The cost of the emulator and its interchangeability with a hydraulic control are thus improved. We can reuse a standard clutch pedal.
    [0018] The input member may be articulated on a rod, the latter moving in translation along an axis when the clutch pedal is actuated, so as to move the piston in translation. Alternatively, the input member forms a rod moving in translation along an axis when the clutch pedal is actuated, so as to move the piston in translation.
    [0019] The fluid may be a hydraulic fluid and the return system may include a solenoid valve for adjusting the passage section in the channel. This changes the flow in the channel, and therefore the reaction force on the clutch pedal acting on this passage section. Alternatively, the fluid may be a rheological fluid and the biasing system includes a variable magnetic field source for adjusting the fluid velocity in the channel. Depending on the value of the magnetic field generated, the fluid particles are thus more or less attracted into the channel, so that the flow rate in the latter varies. The variable magnetic field source may be a coil with or without a core or, alternatively, a movable magnet.
    [0020] According to this second aspect of the invention, the return system may further comprise an elastic return member opposing the displacement of the piston when the clutch pedal is actuated. This elastic return member is for example disposed in one of the compartments of the chamber and it bears against one side of a wall of this compartment, and on the other hand against the piston. This return member is then compressed when the piston moves under the effect of an actuation of the clutch pedal. The flow in the channel is for example set by a control unit which may or may not be integrated in the engine control unit (ECU). According to this second aspect of the invention, a position sensor may be provided. This position sensor for example measures the movement of the piston. The information provided by this sensor is then used to generate a setpoint for the electric actuator to change the state of the transmission system and / or to adjust the flow rate in the channel. According to the first or the second aspect above, when a position sensor is present, this sensor may be a non-contact linear sensor. The connector of this sensor can be placed on the engine compartment side.
    [0021] The third subject of the invention is an assembly for the electrical control of a transmission system, comprising: a clutch pedal actuable by a user; aspect of the invention, comprising a housing, and 5 - an electric actuator, adapted to control the transmission system according to the force exerted by the user on the pedal. As already mentioned, the input member of the emulator can be articulated on the clutch pedal. In this case, the emulator is used in place of a hydraulic control transmitter cylinder.
    [0022] Such an emulator is particularly interesting when the implantation of the latter in the vicinity of the clutch pedal is possible. Alternatively, the assembly may comprise an emitter cylinder, and a hydraulic line connected on the one hand to the emitter cylinder and on the other hand to the force emulator, the actuation of the clutch pedal by a user generating fluid displacement from the emitter cylinder to the emulator through the hydraulic line, and this fluid displacement causing the emulator input member to move. In this case, the emulator does not replace the hydraulic control transmitter cylinder, which remains present, just like the hydraulic line, but it replaces the slave cylinder. As before, the actuation of the clutch pedal thus does not create a force which, by purely mechanical action, makes it possible to modify the state of the transmission system. Such an emulator is particularly interesting when the implantation of the latter near the pedal is not possible, because of a limited available space.
    [0023] The above assembly may comprise a wall in which an opening is provided in which the housing of the emulator is mounted. This wall is still called "apron". The emulator housing can be snugly mounted in the opening of the wall. A system for fixing the housing of the emulator on the wall is for example provided, for example a bayonet mount or snap.
    [0024] The aperture in the wall may be of a size that allows it to receive indifferently and in an adjusted manner the emulator housing or a transmission system hydraulic control transmitter cylinder housing. In other words, the housing of the emulator may have dimensions allowing it to be interchangeably mounted with a conventional hydraulic control transmitter cylinder in the wall, or apron.
    [0025] 3034719 12 It is thus possible to use an emulator and an electric control with a standard apron. The assembly may comprise at least one seal applying between the housing of the emulator and the wall so as to seal between this housing and this wall. Another object of the invention is, according to another of its aspects, an assembly for the electrical control of a transmission system, comprising: a clutch pedal actuable by a user; a force emulator, suitable to generate a reaction force on the clutch pedal during an actuation thereof, and comprising a housing, - an electric actuator, able to control the transmission system according to the force 10 exerted by the user on the pedal, and - a wall having an opening the size of which allows it to fitly receive and interchangeably the housing of the emulator and a housing of a hydraulic control transmitter cylinder. All or some of the features mentioned above apply to this other aspect of the invention. The invention further relates to a kit for controlling a transmission system with clutch pedal, comprising: an emulator capable of generating a reaction force on a clutch pedal when the latter is actuated, 20 - an emitter cylinder adapted to generate a hydraulic force when the clutch pedal is actuated, the emulator and the emitter cylinder each comprising a housing whose dimensions allow the interchangeable mounting of these housings in an opening of a wall. All or some of the features mentioned above apply to this other aspect of the invention. In all of the above, the emulator can be associated with a manual gearbox. The invention will be better understood on reading the following description of nonlimiting examples of implementation thereof and on examining the appended drawing in which: FIG. 1 schematically represents an emulator for electrical control of transmission system 30 according to a first example of implementation of a first aspect of the invention, - Figure 2 is a sectional view along II-II of Figure 1, - Figure 3 is a FIG. 4 is a very schematic view of an emulator according to a second example of implementation of the first aspect of the invention, FIG. 5 is a very diagrammatic view of FIG. An emulator according to a third example of implementation of the first aspect of the invention, - Figures 6 to 11 relate to a fourth example of implementation of the first aspect of the invention, Figure 6 being a view of burst of the emulator, FIG. 7 being a view of the emulator of FIG. 6 when assembled, FIG. 8 being a schematic sectional view of the emulator different from that of FIGS. 6 to 8 by its input member, FIG. 9 being a front view of FIG. the emulator of Figure 6, Figure 10 being a sectional view along XX of the emulator of Figure 9, and Figure 11 being a sectional view along XI-XI of the emulator according to Figure 10, 10 FIG. 12 represents the reaction force applied to the clutch pedal as a function of the stroke thereof by the emulator of FIGS. 6 to 11, one of the curves showing this force when the clutch pedal is actuated while the other curve shows this effort when the clutch pedal is released. 13 to 15 show a variant of the fourth embodiment of the first aspect of the invention, FIG. 13 being similar to FIG. 7 while FIGS. 14 and 15 are similar to FIGS. 10 and 11, FIG. FIG. 15 being a sectional view along line XV-XV of FIG. 14, FIG. 16 is a similar representation of FIGS. 4, 5 and 8 of an emulator for electrical control of a transmission system according to a second aspect of the invention; FIG. 17 shows another example of a transmission system control emulator which may belong to both the first and second aspects of the invention, and FIG. 18 is a sectional view of the emulator of FIG. 17. An emulator for electrical control of a vehicle transmission system will be described with reference to the figures. In the examples described below, the emulator 1 interacts with a clutch pedal 2 and with a manual gearbox not shown. Since the transmission system is electrically controlled, no pressure is exerted by a fluid changing the state of the transmission system when the clutch pedal 2 is actuated. The emulator 1 thus allows the exercise of a reaction force on this pedal. Figures 1 to 3 show a first example of implementation of an assembly comprising an emulator 1 according to a first aspect of the invention.
    [0026] According to this first aspect, the emulator 1 is purely passive, that is to say that it generates the reaction force on the clutch pedal 2 by means of an elastic return system comprising that mechanical elements, such as springs or cams, being devoid of electromechanical element such as a solenoid valve or any kind of pump. The emulator 1 here comprises a housing 4 mounted in an opening 5 of an apron 6 of the vehicle.
    [0027] The housing 4 has dimensions allowing it to be disposed interchangeably in the opening 5 with a conventional hydraulic control transmitter cylinder housing. In other words, the housing 4 has dimensions for using the emulator 1 with a standard apron 6. The housing 4 is then fitted in the opening 5. As can be seen in Figure 2 for example, a fastening system of the housing 4 in the opening 5 is provided, this fastening system comprising here the housing level 4 an element 9 for fixing bayonet housing 4 on the apron 6. As shown in Figure 1, a seal 7 is also provided, this seal 7 to seal the interior of the deck 6 relative to the the passenger compartment of the vehicle at the level of the opening 5.
    [0028] As shown in FIG. 1, the emulator 1 comprises an input member 8, able to be articulated on the clutch pedal 2 so as to be displaced when this clutch pedal 2 is actuated by a clutch pedal 2. vehicle user. Here, the input member 8 is directly articulated on the clutch pedal 2.via a ball joint arranged at its end 10 coming into contact with the clutch pedal 2.
    [0029] In the example shown, the input member 8 is articulated on a rod 12. This articulation is for example a ball joint arranged at the end 14 of the input member 8 opposite the end 10 allowing the link with the clutch pedal 2. The rod 12 is received inside the housing 4 and it moves in translation along an axis X with respect to a frame linked to the housing 4.
    [0030] The rod 12 comprises in this example several pieces assembled together and moving together in translation relative to the housing. The rod 12 comprises here: - a hollow slider 15 articulated on the input member 8 and forming with the end 14 of the latter a ball joint, and - a rod 17, one end of which is arranged in a housing 18 formed in the slider 25 and whose other end 19 can move beyond a ring 20 fixed to the housing. The assembly also comprises in the example shown a position sensor 22. The sensor 22 is here carried by the housing 4 of the emulator 1 and this sensor, which is in particular a non-contact and linear sensor, measures for example the displacement end 19 of the rod 17. The information provided by this sensor 22 can be used by a processing unit, for example integrated in the ECU, to generate a set point for an electric actuator modifying the state of the system of transmission. It is thus possible to achieve an electric control of the "clutch by wire" type. For example, it is possible to run freewheeling, also called "coasting" in English.
    [0031] The emulator 1 exerts a reaction force on the clutch pedal 2 by means of an elastic return system 25 configured to oppose the movement of the input member 8 consecutive to this actuation of the clutch pedal. In the example of FIG. 1, this elastic return system 25 comprises a cam 26, carried by the portion of the rod 17 disposed outside the slide 15, and two rollers 27. The cam 26 moves in the example in translation along the axis X in the reference linked to the housing 4, and it extends on either side of this axis X, and on either side of the rod 12. The cam 26 here has a portion 29 extending on one side of the axis X and a portion 30 extending on the other side of the axis X, and each of these portions 29 or 30 cooperates with one of 10 rollers 27. Each portion 29 or 30 of the cam has an identical profile from one portion to another, this profile comprising successively: a secti plane, and a section forming a ramp. A roller 27 is, in the example of Figures 1 to 3, pressed against the portion 29 of the cam 26 via a spring 32. This spring 32 extends here along an axis Y which is orthogonal to the axis X according to which the cam 26 is moved. This plating allows the rollers 27 to oppose the displacement of the cam 26. This displacement of the cam 26 being, as already mentioned, caused by the actuation of the clutch pedal 2 by a user, the cooperation between the cam 26 and the rollers 27 thus makes it possible to generate the reaction force on the clutch pedal 2 during the actuation of the latter.
    [0032] The spring 32 is here a helical spring which extends along the Y axis between two ends. One of these ends is secured to the housing 4, being here fixed on a holding member 34 fixedly mounted in the housing 4 and guiding the movement of the spring 32 in the housing 4. The other end of the spring 32 is fixed on a plate 36, this plate pressing on one of the rollers 27.
    [0033] The plate 36 can also cooperate with a roller 38, also called "guide roller and reaction". This roller 38 serves to guide the movement of the spring 32 relative to the housing 4 and to transmit to the housing 4 the forces that the cam 26 exerts on it. Two rollers 38 may be provided, each of these rollers then being arranged on one side of the rod 12. Each roller 38 may have a shape identical to that of the rollers 27.
    [0034] We will now describe the operation of the emulator 1 according to the first example of implementation of the first aspect of the invention. When the clutch pedal 2 is actuated, the input member 8 is moved via the connection formed at its end 10. This displacement is then transmitted to the rod 12 via the connection formed with the end 14 of the organ 8. The rod 12 then moves in translation along the X axis 35 in the housing 4, and this movement tends to cooperate the ramps of the portions 29 and 30 of the cam 26 26 with 26 rollers. spring 32 exerts a force on the rollers 27 opposing their displacement along the Y axis because of their cooperation with the ramps of the cam 26. This force exerted by the spring 32 generates a reaction force on the pedal of clutch 2. The respective lengths of the different sections of the profile and / or the slope of the ramp of the portions 29 or 30 of the cam can be chosen during the design of the elastic return system 25 as a function of the reaction force that we try to apply on the pedal of emb striping. For example, it is possible to design a return system 25 that generates a force with hysteresis, that is to say that for the same position of the clutch pedal 2, the reaction force is not the same depending on whether the user presses the pedal or as he releases the pedal. In an undescribed variant of this first example, the rod 12 is formed by a portion of the input member 8. In this case, the rod 12 moves inside a guide articulated on the housing of the emulator 1, and the translation of the cam 26 is appreciated relative to a reference linked to this guide.
    [0035] An emulator 1 according to a second example of implementation of the first aspect of the invention will now be described with reference to FIG. This emulator 1 comprises, as that described above, an elastic return system 25 implementing a cam 26 and rollers 27. The rod 12, shown schematically in Figure 4, may be a part of the input member 20 8, in which case it moves in translation along an axis X in a reference linked to a guide articulated on the housing 4. In a variant, the rod is distinct from the input member 8 of the emulator and articulated thereto in which case the displacement in translation of the rod 12 is appreciated with respect to a reference linked to the housing 4 of the emulator 1.
    [0036] As can be seen in FIG. 4, the cam 26 is carried by the rod 12 and two rollers 27 are provided on each side of the rod 12. Each roller 27 is pressed against a portion 29 or 30 of the cam 26 by two parallel springs 32, each of these springs 32 extending along an axis Y substantially perpendicular to the axis X of displacement of the rod 12 and the cam 26. Each spring 32 is here a helical spring. Each spring 32 is on one side of the rod 12.
    [0037] The emulator 2 further comprises in this example two levers 40, each lever 40 being hinged to the housing 4 via a hinge 41. Each lever 40 is arranged on one side of the X axis of displacement, that is to say say in the example considered on one side of the rod 12. Each lever 40 is in the example considered formed using a folded sheet metal part with stampings. Each hinge 41 can be obtained by means of a cut sheet or by means of a folded-welded wire, to form a closed rectangle. In a variant not described, additional elements are interposed between the housing 4 and the levers 40, for example flexible blades, so as to transmit to the housing 4 the forces exerted by the cam 26 on the levers 40. one of its ends, each lever 40 carries an axis 43 of one of the rollers 27. The folds in a lever allow the latter to maintain the axis 43 it carries. Each roller 27 is then rotatable about a stationary axis relative to the lever 40. Each spring 32 then extends between the two levers 40, resting at each of its ends on one of the levers 40. this second example of implementation, the displacement in translation of the cam 26 tends to exert a force to move the levers 40 from one another. Each spring 32 exerts a force opposing this spacing of the levers 40, thereby providing the reaction force on the clutch pedal 2, upon actuation thereof. As described in connection with the first example of implementation of the invention, the assembly comprising an emulator according to the second embodiment of the invention may comprise a position sensor of the displacement of the rod 12.
    [0038] An emulator according to a third example of implementation of the first aspect of the invention will now be described with reference to FIG. 5. In this third example, the cam 26 is still carried by the rod 12. The rod 26 is here formed by a portion of the input member 8. The latter can move in translation along an axis X inside an articulated guide 50, for example via a ball joint 51, on the housing 4.
    [0039] The translational movement is then appreciated with respect to a reference linked to the guide 50. According to this third example of implementation, the elastic return system further comprises two rollers 27 which each interact with a portion 29 or 30 of the cam 26, each of these portions 29 and 30 extending only on one side of the rod 12 and being formed by a side face of the cam 26.
    [0040] The return system here is devoid of a coil spring. A leaf spring 55 is provided here, this leaf spring exerting on the rollers 27 a force pressing against a portion 29 or 30 of the cam 26. Each roller 27 is rotatable about an axis 43, the latter being fixed on the leaf spring 55 which acts as a roller support. The leaf spring is here fixed on the guide 50, so that the translation of the rod 12 is appreciated relative to a reference linked to the support of the rollers 27. In the example shown, the leaf spring 55 is realized in one piece using a folded sheet. In a plane containing the axis of displacement X, this leaf spring here has a U-shape, comprising a back 57 and two branches 56. Each end of a branch 56 here carries an axis 43 of a roller 27 while the rod 12 extends through the back 57.
    [0041] The choice of the sheet for making the leaf spring 55 can make it possible to choose the elastic restoring force exerted on the rollers 27 to press them against the cam 26. Thus, the choice of the sheet makes it possible to adjust the force of reaction exerted on the clutch pedal 2 when it is actuated.
    [0042] In a variant not shown, the leaf spring is other, being especially laminated. Several blades spaced around the X axis can then be provided. In another variant not described, the rod 12 is distinct from the input member 8, and articulated on the latter. The translational movement of the rod 12 is then assessed with respect to a reference linked to the housing 4.
    [0043] Still according to this third example of implementation, a position sensor may be provided. A set with an emulator according to a fourth embodiment of the invention will now be described with reference to FIGS. 6 to 11. As can be seen in Figure 6, the housing 4 is for example in two parts, screws 60 then allowing the assembly of these two parts of the housing 4.
    [0044] According to this fourth example of implementation, the cam is not displaced in translation by the rod 12. The cam 26 is formed by a leaf spring 70. The leaf spring 70 is made in one piece to the using a folded sheet. In a plane containing the axis of displacement X, this leaf spring here has a U-shape, comprising a back 71 and two branches 72. Each branch 72 defines a running surface which, other than at its free end extends parallel to the axis X. The leaf spring 70 is in the example considered secured to the housing 4 by means of the screws 60 used to assemble the two parts of the housing 4. Still according to this fourth example of implementation the rod 12 carries the axes 43 of the rollers 27. Each roller 27 is disposed on one side of the X axis of displacement. The rollers 27 can roll along the X axis, via their cooperation with the branches 72 of the leaf spring 70.
    [0045] The leaf spring thus makes it possible to press the branches 72, which correspond to the cam portions 28 and 29 described above, against the rollers 27. As can be seen in FIGS. 6 and 7, the rod 12 can be articulated on the input member 8, in which case the rolling along the axis X of the rollers 27 is evaluated with respect to a reference linked to the housing 4.
    [0046] In the variant illustrated in FIG. 8, the rod 12 is formed by a part of the input member 8. In this case, the rod 12 moves in translation inside a guide 50, similarly to what has been described with reference to the second and third examples of implementation of the invention. The leaf spring 70 which defines the cam is in this variant fixed on the guide 50, so that the rolling of the rollers 27 along the axis X is appreciated in a reference frame 35 connected to the leaf spring 70.
    [0047] Still according to this fourth example of implementation, a position sensor may be provided. In all the examples which have just been described, each roller 27 may be guided in rotation on its axis 43 by a ball or needle bearing. or by a plain bearing. Each of the resilient return systems described with reference to FIGS. 1 to 11 can be used to generate a reaction force on the clutch pedal when it is actuated with a hysteresis. As represented in fact in FIG. 12, which is a graph obtained with the emulator according to the fourth implementation example, but which can be transposed to the other examples of implementation previously described, the reaction force exerted on the clutch pedal 2 depending on its actuating stroke may be different depending on whether the user presses the clutch pedal or releases it. We can indeed see by comparing the curve 80, which corresponds to a support on the pedal 2, and the curve 81, which corresponds to a release of the pedal, that different values of reaction force exist for the same race of the pedal.
    [0048] As can be seen in FIG. 12, the elastic return system 25 exerts for example on the clutch pedal 2 a reaction force similar to that which would be exerted on the latter with a hydraulic control and a clutch on the clutch pedal. new condition. Each curve 80 and 81 then presents, for a race increasing from zero, first a hump and then a hollow. A variant of the fourth embodiment of the invention will now be described with reference to FIGS. 13 to 15. The emulator 1 according to this variant differs essentially from that described with reference to FIGS. 6 to 11 in that an additional helical spring 90 is provided. This helical spring 90 is here interposed between the housing 4 and a support formed in the input member 8. The spring 90 is here connected to both the housing 4 and the input member 8. This spring 90 acts and in parallel with the leaf spring 70 to press the rollers 27 against the cam portions 72 formed by the branches of the leaf spring 70. The spring 90 acts in this variant in parallel with the leaf spring 70 and provides a part of the the reaction force exerted on the clutch pedal 2 when the latter is actuated. A set comprising an emulator 100 according to a second example of implementation of the invention will now be described with reference to FIG.
    [0049] This emulator 100 is integrated with an electrical control of a vehicle transmission system, as is the emulator described with reference to FIGS. 1 to 12. This emulator 100 thus interacts with a clutch pedal not shown in FIG. 13. and with a manual gearbox also not shown. Since the transmission system is electrically controlled, no pressure is exerted by a fluid changing the state of the transmission system when the clutch pedal is actuated. The emulator 100 thus allows the exercise of a reaction force on this pedal. According to this second aspect, the emulator 100 is active, that is to say that it generates the reaction force on the clutch pedal by means of a return system comprising one or more elements. electromechanical, as will be seen later. This emulator 100 comprises, similarly to the emulator 1 described above, an input member 101, separate from the clutch pedal and adapted to be articulated on the latter so as to be displaced when this pedal is actuated. clutch by a user. An end 102 of this input member 101 forms for example a ball joint connection with the clutch pedal 10. The emulator 100 further comprises a chamber 103 filled with a liquid and a piston 104 movable in the chamber 103 under the effect of the displacement of the input member 101. The piston 104 defines in a sealed manner two compartments 105 and 106 in the chamber 103. As can be seen, a channel 107, which is in the example described, arranged outside the chamber 103, allows communication between the compartments 105 and 106. As will be seen later, this channel 107 has an adjustable flow rate, which allows to vary in a controlled manner the pressure difference between the compartments 105 and 106. Similar to the emulator 1 described above, the emulator 100 comprises a housing 110 mounted in an opening 111 of the apron 112 of the vehicle. The housing 110 has dimensions 20 allowing it to be disposed in the opening 111 interchangeably with a conventional hydraulic control transmitter cylinder housing. Still in a manner similar to the emulator 1 of FIGS. 1 to 12, a system for fastening the housing 110 in the opening 111 is provided, this fastening system comprising here at the housing 110 an element 113 for fixing the housing to a bayonet 110 on the apron 111. A seal 115 is also provided, this seal 115 making it possible to seal the inside of the deck relative to the passenger compartment of the vehicle at the level of the opening 111. In the example of FIG. 13 , the input member 101 forms a rod and the rod moves in translation in a guide 120 articulated on the housing 110, for example via a ball joint. In the example shown in FIG. 13, the liquid present in the chamber 103 is a hydraulic liquid and a solenoid valve 122 is disposed in the channel 107. This solenoid valve 122 is controlled by a control unit 124 which communicates with the ECU the vehicle, being for example integrated into the vehicle's ECU. The solenoid valve 122 makes it possible to regulate the flow rate in the channel 107 by varying the passage section in the channel 107.
    [0050] Alternatively, the liquid present in the chamber 103 is a rheological liquid and the flow rate in the channel 107 is regulated by a variable magnetic field source such as a coil, with or without a core, or a movable magnet. The magnetic field can thus, depending on its value, circulate more or less liquid particles in the channel 107.
    [0051] The chamber 103, the piston 104 and the adjustable flow channel 107 constitute, according to this second aspect of the invention, a return system for generating a reaction force on the clutch pedal when it is actuated. In the example described, this return system further comprises a helical spring 125 disposed in the compartment 105 and opposing the decrease in the volume of the latter when the piston 104 moves due to the actuation of the pedal. 'clutch. As can be seen in FIG. 13, a position sensor 127 is also present, this sensor measuring in the example described the displacement of the rod 101. The information provided by this sensor 127 can be used to generate a setpoint for the electric actuator modifying the state of the transmission system and / or regulating the flow rate in the channel 107.
    [0052] The operation of the emulator 100 shown in FIG. 16 will now be described. When the clutch pedal is actuated by a user, the input member 101, and thus the rod, moves in translation in the guide 120 and in the chamber 103. This displacement of the rod 101 moves the piston 104. This movement is against the force exerted by the spring 125 and against the force exerted by the pressure in the compartment 105 and which results from the flow of liquid in the channel 107. Thus the emulator 100 is controlled by the control unit 124 so that the pressure difference in the chamber 103 on either side of the piston 104 leads a predefined reaction force is applied to the clutch pedal. Thanks to the emulator 100, the reaction force applied to the clutch pedal when it is actuated can be varied dynamically. Such a possibility makes it possible to adapt the race-effort characteristic to the wishes of an automobile manufacturer, to the type of user or according to the circumstances of use of the vehicle on which the transmission system is embedded. The emulator 100 exerts for example on the clutch pedal a reaction force similar to that which would be exerted on the latter by a hydraulic control and a clutch in new condition. In a not shown variant of the emulator 100, the input member 101 is articulated on a rod, and this rod moves in translation in the chamber 103, thus displacing the piston 104 in translation.
    [0053] In all the examples which have just been described, the input member 8 or 101 of the emulator 1 or 100 is articulated on the clutch pedal of the vehicle and the conventional hydraulic control is completely removed. The invention is however not limited to such a configuration, as will now be seen with reference to Figures 14 and 15.
    [0054] According to the example of FIGS. 14 and 15, described in connection with the first aspect of the invention but which also applies to the second aspect of the invention, the assembly comprises - an emitter cylinder 210, and - a pipe 211. In known manner, the emitter cylinder 210 is connected to a low pressure reservoir 212 and to the hydraulic pipe 211. The actuation of the clutch pedal 2 displaces a piston in the emitter cylinder 210, which causes a delivery of pressurized liquid in the hydraulic pipe 211. The hydraulic pipe 211 is connected to an inlet 213 formed in the housing 220 of the emulator 200. This inlet 213 thus allows the liquid displaced due to the actuation of the clutch pedal 2 to come into contact with the input member 223 of the emulator 200 and to move the latter. In the example shown, the input member 223 of the emulator 200 forms a rod moving in the housing 220 of the emulator 200. This rod carries a cam 226 and the displacement of this cam 226 is against an elastic force exerted on this cam 226 by rollers 227 on which a helical spring 232 presses, similarly to what has been described with reference to Figures 1 to 3. This force exerted by the rollers 227 on the cam 226 is propagated to through the hydraulic pipe 211 to the transmitter cylinder 210, so that a reaction force is generated on the clutch pedal 2 by the emulator 200. According to variants not described, the reminder system of the emulator 200 is other, for example that according to the second example of implementation, or the third example of implementation or the fourth example of implementation of the first aspect of the invention which have been described above. According to another variant not described, the reminder system of the emulator 200 is that according to the second aspect of the invention, shown in FIG. 13.
    权利要求:
    Claims (19)
    [0001]
    REVENDICATIONS1. Power emulator (1, 200) for electrical control of transmission system, comprising: - an input member (8, 223), distinct from a clutch pedal (2) and able to be moved in case of actuation of this clutch pedal (2) by a user, - an elastic return system (25) opposing this displacement of the input member (8, 201), the elastic return system (25) ) comprising: at least one cam (26, 72, 226) cooperating with at least one roller (27, 227), one of the cam (26, 72, 226) and the roller (27, 227) moving on along an axis (X) when the input member (8, 201) moves due to the actuation of the clutch pedal (2), and the cooperation between the cam (26, 72, 226 ) and the roller (27, 227) opposing this displacement along the axis (X).
    [0002]
    2. Emulator according to claim 1, the input member (8) being articulated on a rod (12) moving in translation along the axis (X) when the input member (8) moves. .
    [0003]
    3. Emulator according to claim 1, the input member (8) forming a rod (12) moving in translation along the axis (X) when the clutch pedal is actuated (2).
    [0004]
    4. Emulator according to claim 2 or 3, the cam (26, 226) being carried by the rod (12) and the roller (27, 227) being pressed against the cam (26) under the effect of a force of elastic return.
    [0005]
    5. Emulator according to claim 4, the elastic return system (25) comprising at least one spring (32) whose axis (Y) is transverse to the axis of displacement (X) of the rod (12) .
    [0006]
    6. Emulator according to claim 5, comprising a housing (4, 220) and the spring (32, 232) extending between an end secured to the housing (4, 220) and an end secured to a member (36) supporting on the roller (27, 227).
    [0007]
    7. Emulator according to claim 5, comprising a housing (4) and two levers (40), each lever (40) being articulated on the housing (4) and carrying a roller (27), each roller (27) cooperating with a portion (29, 30) of the cam during movement along the axis (X) thereof, and the spring (32) being interposed between the two levers (40), and supported on each lever (40) .
    [0008]
    8. Emulator according to claim 7, the elastic return system (25) comprising two springs (32), the rod (12) being disposed between these two springs (32).
    [0009]
    9. Emulator according to claim 4, the elastic return system (25) comprising a leaf spring (s) (55) carrying the roller (27).
    [0010]
    10. Emulator according to claim 9, the leaf spring (s) (55) being made in one piece using a crushed sheet or being formed by the meeting of blades arranged around the rod (12). .
    [0011]
    11. Emulator according to claim 2 or 3, the roller (27) being carried by the rod (12) and the cam (72) being pressed against the roller (27). 3034719 24
    [0012]
    12. Emulator according to claim 11, the elastic return system (25) comprising a leaf spring (70) whose surface (72) defines the cam.
    [0013]
    13. Emulator according to claim 12, the elastic return system (25) comprising an additional elastic return member (90), in particular a helical spring, acting in parallel with the leaf spring (70).
    [0014]
    14. An assembly for the electrical control of a transmission system, comprising: - a clutch pedal (2) operable by a user, - an emulator (1, 200) according to any one of the preceding claims, comprising a housing (4, 220), and 10 - an electric actuator, adapted to control the transmission system according to the force exerted by the user on the clutch pedal (2).
    [0015]
    15. The assembly of claim 14, the input member (8) of the emulator (1) being articulated on the clutch pedal (2).
    [0016]
    16. An assembly according to claim 14, comprising: - an emitter cylinder (210), and - a hydraulic line (211) connected on the one hand to the emitter cylinder (210) and on the other hand to the emulator of effort (200), the actuation of the clutch pedal (2) by a user generating fluid displacement from the transmitter cylinder (210) to the emulator (200) through the hydraulic line (211), and fluid displacement causing displacement of the input member (223) of the emulator (200).
    [0017]
    17. An assembly according to any one of claims 14 to 16, comprising a wall (6) in which is formed an opening (5) in which is mounted the housing (4) of the emulator (1).
    [0018]
    18. An assembly according to claim 17, the aperture (5) having dimensions enabling it to indifferently receive the casing (4) of the emulator (1) or a casing of a hydraulic system control transmitter cylinder. transmission.
    [0019]
    19. The assembly of claim 17 or 18, comprising at least one seal (7) applying between the housing (4) of the emulator (1) and the wall (6) so as to seal between this housing (4) and this wall (6). 30
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    同族专利:
    公开号 | 公开日
    WO2016162623A1|2016-10-13|
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    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    DE102008061569A1|2007-12-19|2009-06-25|Luk Lamellen Und Kupplungsbau Beteiligungs Kg|Clutch operating system for friction clutch in motor vehicle, has profile unit having two opposite profile characteristics line arranged along profile unit, which pressurizes two rollers or sliding body|
    FR2963286A1|2010-07-28|2012-02-03|Peugeot Citroen Automobiles Sa|Hydraulic system's master cylinder and clutch pedal assembly for clutch controller of heat engine of motor vehicle, has control rod whose rolling element cooperates with profile of cam according to variable support angle along profile|
    DE102014203271A1|2013-03-12|2014-09-18|Schaeffler Technologies Gmbh & Co. Kg|Actuation device for a clutch|
    DE102008043596A1|2008-11-10|2010-05-12|Zf Friedrichshafen Ag|Actuating arrangement for vehicle coupling, has cam plate arranged axially towards or at pedal at axial side, so that supporting force is axially engaged at both sides of pedal, where axial side is turned towards another cam plate|DE102015216146A1|2015-08-24|2017-03-02|Schaeffler Technologies AG & Co. KG|Device for force simulation on an actuating element of a vehicle, in particular pedal force simulator|
    DE102017103211A1|2017-02-16|2018-08-16|Schaeffler Technologies AG & Co. KG|Pedal force simulation device with a flat spring element and actuating system|
    DE102017103208A1|2017-02-16|2018-08-16|Schaeffler Technologies AG & Co. KG|Pedal force simulation device with multipart guide piston and actuation system|
    DE102019216855A1|2019-10-31|2021-05-06|Zf Friedrichshafen Ag|Force generating device, in particular pedal force simulator, for an actuating element of a motor vehicle|
    法律状态:
    2016-04-28| PLFP| Fee payment|Year of fee payment: 2 |
    2016-10-14| PLSC| Search report ready|Effective date: 20161014 |
    2017-04-28| PLFP| Fee payment|Year of fee payment: 3 |
    2018-04-26| PLFP| Fee payment|Year of fee payment: 4 |
    2019-04-29| PLFP| Fee payment|Year of fee payment: 5 |
    2020-04-30| PLFP| Fee payment|Year of fee payment: 6 |
    2021-04-29| PLFP| Fee payment|Year of fee payment: 7 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1552989A|FR3034719B1|2015-04-07|2015-04-07|EFFORT EMULATOR FOR ELECTRICAL CONTROL OF TRANSMISSION SYSTEM|
    FR1552989|2015-04-07|FR1552989A| FR3034719B1|2015-04-07|2015-04-07|EFFORT EMULATOR FOR ELECTRICAL CONTROL OF TRANSMISSION SYSTEM|
    PCT/FR2016/050767| WO2016162623A1|2015-04-07|2016-04-05|Load emulator for electrical control of a transmission system|
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