SYSTEM OF CONTROLLED FLAPS FOR A VEHICLE WITH TWO FLAP SETS

Description

[0001] The present invention relates to a system of controlled shutters for a vehicle. It finds a particular but non-limiting application in motor vehicles. It also relates to a method for controlling shutters implemented by said controlled shutter system.

[0002] In the field of motor vehicles, a controlled shutter system of a vehicle, known to those skilled in the art, is arranged behind the grille of motor vehicles, and comprises two sets of shutters capable of taking an open position and a closed position, the two sets of shutters being open or closed simultaneously to allow air to pass through or prevent the passage of air under the engine hood of motor vehicles. Other examples of controlled shutter systems are also shown in documents GB2515640A, DE202011050523U1, JP2015182496A, DE102016015116A1 and US2018 / 170170A1.

[0003] A disadvantage of this state of the art is that one of the sets of shutters cannot be opened or closed independently of the other set of shutters.

[0004] In this context, the present invention aims to propose a system of controlled shutters of a vehicle which makes it possible to resolve the mentioned drawback.

[0005] To this end, the invention proposes a system of controlled shutters for a vehicle comprising two sets of shutters, each set of shutters being able to take an open position and a closed position, characterized in that said system of controlled shutters further comprises an actuator configured to control one of the sets of shutters into the open position before the other of the sets of shutters.

[0006] According to non-limiting embodiments, the controlled shutter system of a vehicle may further comprise one or more additional characteristics taken alone or in all technically possible combinations, among the following.

[0007] According to the invention, said controlled shutter system is characterized in that it further comprises: a spring connecting the two sets of flaps, an upper lever with a primary dead travel cam configured to be driven by a connecting rod, a lower lever with a secondary dead travel cam configured to be driven by said actuator, and said connecting rod connected to said actuator and connecting said upper lever and said lower lever.

[0008] According to a non-limiting embodiment, said spring is configured to: be taut when both sets of shutters are in the closed position, relax so as to position one of the sets of shutters in the open position, be taut when both sets of shutters are in the open position.

[0009] According to a non-limiting embodiment, the two sets of shutters are initially in the closed position.

[0010] According to a non-limiting embodiment, one of the sets of shutters extends in a different plane from the other of the sets of shutters or the two sets of shutters are coplanar.

[0011] According to a non-limiting embodiment, said controlled shutter system further comprises: a primary connecting piece connecting the flaps of one of the flap assemblies and comprising at least one primary drive finger which abuts in the primary dead travel cam when one of the flap assemblies is in the open position or in the closed position, a secondary connecting piece connecting the flaps of the other of the flap assemblies and comprising at least one secondary drive finger which abuts in the secondary dead travel cam when the other of the flap assemblies is in the open position or in the closed position, and which slides along said secondary dead travel cam when one of the assemblies is in the open position

[0012] A method of controlling a system of controlled shutters of a vehicle according to the invention is also proposed, said shutters being part of two sets of shutters, each set of shutters being able to take an open position and a closed position, characterized in that said control method comprises a step of controlling one of the sets of shutters into the open position before the other of the sets of shutters.

[0013] According to a non-limiting embodiment, the two sets of shutters are initially in the closed position.

[0014] According to a non-limiting embodiment, to control the two sets of shutters in the open position, said control method executes the step of controlling one of the sets of shutters in the open position before the other of the sets of shutters.

[0015] According to a non-limiting embodiment, to control the two sets of shutters in the closed position, said control method executes the step of controlling the other of the sets of shutters in the closed position before one of the sets of shutters.

[0016] The invention and its various applications will be better understood by reading the following description and examining the accompanying figures: [ Fig. 1 ] schematically illustrates a system of controlled flaps of a vehicle comprising two sets of flaps, an actuator, a spring, an upper lever with a dead stroke cam, a lower lever with a dead stroke cam, and a connecting rod, according to a non-limiting embodiment of the invention, [ Fig. 2a ] illustrates a perspective view of the two flap assemblies, the spring, the upper lever with a dead-stroke cam, the lower lever with a dead-stroke cam, and the connecting piece of the piloted flap system of the figure 1 , when the two sets of shutters are in a closed position, according to a non-limiting embodiment, [ Fig. 2b ] illustrates a profile view of the elements of the figure 2a , without the two sets of shutters, according to a non-limiting embodiment, [ Fig. 3a ] illustrates a perspective view of the two flap assemblies, the spring, the upper lever with a dead-stroke cam, the lower lever with a dead-stroke cam, and a connecting rod of the piloted flap system of the figure 1 , when one of the sets of shutters is in an open position and the other of the sets of shutters is in a closed position, according to a non-limiting embodiment, [ Fig. 3b ] illustrates a profile view of the elements of the figure 3a , without the two sets of shutters, according to a non-limiting embodiment, [ Fig. 4a ] illustrates a perspective view of the two sets of flaps, the spring, the upper lever, the lower lever, and a connecting line of the piloted flap system of the figure 1 , when the two sets of shutters are in an open position, according to a non-limiting embodiment, [ Fig. 4b ] illustrates a profile view of the elements of the figure 4a , without the two sets of shutters, according to a non-limiting embodiment, [ Fig. 5a ] illustrates a zoomed view of one of the flap assemblies, the upper lever, and the connecting rod with their axes of rotation of the figure 3a , according to a non-limiting embodiment, [ Fig. 5b ] illustrates a zoomed-in view of the other of the flap assemblies, the lower lever, and the connecting rod with their axes of rotation of the figure 3a , according to a non-limiting embodiment, [ Fig. 6a ] illustrates a zoomed-in view of a primary connecting piece that connects the flaps of one of the flap assemblies and that cooperates with the upper lever of the figure 1 , according to a non-limiting embodiment, [ Fig. 6b ] illustrates a zoomed-in view of a secondary connecting piece that connects the flaps of the other of the flap assemblies and that cooperates with the lower lever of the figure 1 , according to a non-limiting embodiment, [ Fig. 7 ] illustrates an opening sequence of the two sets of flaps of the piloted flap system of the figure 1 , according to a non-limiting embodiment, and [ Fig. 8 ] illustrates a diagram of a shutter control process implemented by the controlled shutter system of the figure 1 , according to a non-limiting embodiment of the invention, [ Fig. 9 ] illustrates a diagram of the flap control process of the figure 8 with additional steps, according to a non-limiting embodiment.

[0017] Identical elements, by structure or function, appearing in different figures retain, unless otherwise specified, the same references.

[0018] The invention relates to a controlled shutter system 1 of a vehicle. It is described with reference to figures 1 à 7 The invention also relates to a method 2 for controlling flaps 100 of a vehicle implemented by said controlled flap system 1. It is described with reference to figures 8 et 9 . In a non-limiting embodiment, the vehicle is a motor vehicle. By motor vehicle is meant any type of motorized vehicle. This embodiment is taken as a non-limiting example in the remainder of the description. In the remainder of the description, the vehicle is thus otherwise called a motor vehicle.

[0019] The controlled shutter system 1, called "Air Grille Shutter" in English, is arranged behind the grille of the motor vehicle. It is connected to one or more air exchangers. The controlled shutter system 1 allows air from outside the motor vehicle to pass under the engine hood or to prevent air from passing under the engine hood of the motor vehicle.

[0020] As illustrated on the figure 1 , in a non-limiting embodiment, the controlled shutter system 1 comprises: two sets 10a, 10b of flaps 100, an actuator 11, a spring 12, an upper lever 13a with a primary dead travel cam 131a, otherwise called upper lever 13a or primary lever 13a, a lower lever 13b with a secondary dead travel cam 131b, otherwise called lower lever 13b or secondary lever 13b, a connecting rod 14.

[0021] It should be noted that for clarity, only a few 100 shutters have been illustrated on the diagram of the figure 1 . In the remainder of the description, the sets 10a, 10b of shutters 100 will be referred to interchangeably as sets 10a, 10b. The two sets 10a, 10b of shutters 100 can take an open position p1 or a closed position p2. They are separated by a shock-absorbing crosspiece 15 as illustrated in the figure 7 . There is thus a set 10a of shutters 100, otherwise called first set 10a or high track 10a; and a set 10b of shutters, otherwise called second set 10b or low track 10b. Each set 10a, 10b comprises one or more shutters 100 and the same number or a different number of shutters 100. In the non-limiting example of the figure 7 , set 10a and set 10b have a different number of flaps 100.

[0022] The flaps 100 of the assembly 10a are connected to each other by a primary connecting piece 101a (illustrated in the figures 2b , 3b , 4b , 6a And 6b ). The flaps 100 of the assembly 10b are connected to each other by a secondary connecting piece 101b (illustrated in the figures 2b , 3b , 4b , 6a And 6b ).

[0023] In a non-limiting embodiment, each set 10a, 10b of flaps 100 comprises two sets of flaps 100, one right and one left. In this case, in a non-limiting embodiment illustrated in the figure 6a , the primary connecting part 101a comprises two sides 1010a allowing each set of shutters 100 to be hung respectively. Similarly, in a non-limiting embodiment illustrated in the figure 6b , the secondary connecting piece 101b comprises two sides 1010b allowing each set of shutters 100 to be hung respectively.

[0024] The two sets 10a, 10b are initially in the closed position p2 as illustrated in the figure 7 . By initially, we mean when starting the motor vehicle. In a non-limiting embodiment, one 10a of the assemblies 10a, 10b extends along a different plane from the other 10b of the assemblies 10a, 10b. In another non-limiting embodiment, the two assemblies 10a, 10b extend along the same plane. They are thus coplanar. In a non-limiting variant embodiment, the two assemblies 10a, 10b extend along the same inclined plane, or the two assemblies 10a, 10b can also extend in planes parallel to each other, or even along two distinct non-parallel planes.

[0025] In a non-limiting embodiment illustrated in the figure 6a And 6b, one 10a of the assemblies 10a, 10b comprises at least one primary drive finger 102a which is configured to come into abutment in the primary dead travel cam 131a of the upper lever 13a when one 10a of the assemblies 10a, 10b is in the open position p1 or in the closed position p2. In particular, it is the primary connecting piece 101a which comprises this primary drive finger 102a. In the non-limiting example illustrated, it comprises two primary drive fingers 102a arranged on each side 1010a of the primary connecting piece 101a. In a non-limiting embodiment, these two primary drive fingers 102a are turned inwards. The dead travel 132a (illustrated in the figure 6a ) of the primary dead stroke cam 131a can move along the primary drive finger 102a.

[0026] In a non-limiting embodiment illustrated in the figure 6b , the other 10b of the assemblies 10a, 10b comprises at least one secondary drive finger 102b which is configured to come into abutment in the secondary dead travel cam 131b of the secondary lever 13b when the other 10b of the assemblies 10a, 10b is in the open position p1 or in the closed position p2. In particular, it is the secondary connecting piece 101b which comprises this secondary drive finger 102b. In the non-limiting example illustrated, it comprises two secondary drive fingers 102b arranged on each side 1010b of the primary connecting piece 101b. In a non-limiting embodiment, these two secondary drive fingers 102b are turned inwards.

[0027] Furthermore, the secondary drive finger 102b slides in said secondary dead travel cam 131b when one 10a of the assemblies 10a, 10b is in the open position p1. The dead travel 132b (illustrated in the figure 6b ) of the secondary dead travel cam 131b moves along the secondary drive finger 131b.

[0028] The actuator 11 is configured to drive one 10a of the sets 10a, 10b of shutters 100 into the open position p1 before the other 10b of the sets 10a, 10b of shutters 100. This results in a sequenced opening of the shutters 100. Thus, it opens the shutters of one of the sets 10a, 10b before the other 10b of the sets 10a, 10b. The actuator 11 can thus drive the two sets 10a, 10b of shutters 100 independently of each other. Thus, it is possible to have a modular shutter control strategy (opening / closing), using a single actuator 11.In the non-limiting embodiment where each assembly 10a, 10b comprises two sets of flaps (right and left) and where the primary connecting piece 101a comprises two sides 1010a and the secondary connecting piece 101b comprises two sides 1010b, in a non-limiting embodiment, the actuator 11 has a double output in order to balance the forces on the primary connecting piece 101a and the secondary connecting piece 101b. The simultaneous action of the force on each side 1010a of the primary connecting piece 101a ensures linear movement. The same is true for the secondary connecting piece 101b. This makes it possible to limit as much as possible parasitic forces due to the deflection of the primary connecting piece 101a by the action of a single upper lever 13a. This makes it possible to limit as much as possible the parasitic forces due to the deflection of the secondary connecting part 101b by the action of a single lower lever 13b.It is interesting to have a double output actuator 11, particularly in this type of kinematics where: . the guidance of the primary drive fingers 102a in the primary dead travels 131a of the upper lever 13a is dependent on the correct alignment of the assembly, namely the alignment of the two primary drive fingers 102a with each other when they cooperate with the primary dead travels 131a, the guidance of the secondary drive fingers 102b in the secondary dead travels 131b of the lower lever 13b is dependent on the correct alignment of the assembly, namely the alignment of the two secondary drive fingers 102b with each other when they cooperate with the secondary dead travels 131b.

[0029] Since such a dual output actuator is known to those skilled in the art, it is not described in further detail here.

[0030] The shutter control strategy may include: opening all the shutters 100 of the two sets 10a, 10b, closing all the shutters 100 of the two sets 10a, 10b, opening the shutters of one 10a of the sets 10a, 10b and closing the shutters 100 of the other 10b of the sets 10a, 10b, closing the shutters of one 10a of the sets 10a, 10b and opening the shutters of the other 10b of the sets 10a, 10b.

[0031] In a non-limiting exemplary embodiment, the flaps 100 of the two sets 10a, 10b of flaps 100 are opened during a warm-up phase of the thermal engine. This can occur when the motor vehicle is traveling slowly and on a hill. At this time, there is in fact little air arriving under the engine hood and air is brought in to cool the engine.

[0032] In a non-limiting example embodiment, the shutters of the two sets 10a, 10b of shutters 100 are closed: when we want to improve the air penetration of the motor vehicle. This avoids creating turbulence under the engine hood by preventing air from entering under the engine hood. This results in a gain in speed, reduces fuel consumption and therefore CO2 emissions, during periods of extreme cold, so that the air already under the engine hood is in a closed circuit and heats the engine so as to facilitate a quick start of the motor vehicle, and thus reduce fuel consumption, when the motor vehicle is stationary for a few hours to prevent the engine from cooling down and thus facilitate the starting of the motor vehicle thereafter.

[0033] The actuator 11 is connected to the lower lever 13b. It is configured to drive said lower lever 13b. The actuator 11 is set in motion by a motor (not shown). An electronic control unit (not shown) makes it possible to send control signals to said actuator 11 to set it in motion, depending on the defined flap control strategy.

[0034] As illustrated on the figure 1 , in a non-limiting embodiment, the axis of rotation Ax1 of the actuator 11 is the same as the axis of rotation Ax2 of the lower lever 13b. Furthermore, as illustrated in the figure 5a , the axis of rotation Ax2 of the lower lever 13b is located on the same plane as the axis of rotation Ax3 of each flap 100 of the assembly 10b. This allows for good kinematics. For the sake of clarity, the figure 5b illustrates only one panel 100.

[0035] As illustrated on the figure 5b , the rotation axis Ax2 of the lower lever 13b is distant by a distance d1 from the support point 113 of the actuator 11 on the lower lever 13b. As illustrated in the figure 5b , the rotation axis Ax3 of each flap 100 of the assembly 10b has the same distance d1 with a fixing point 1000 of each flap 100 on the secondary connecting piece 101b. In a non-limiting embodiment, the distance d1 is greater than or equal to 17mm. It should be noted that below this value, feasibility problems could arise. Thus, the secondary dead travel cam 131b of the lower lever 13b performs an identical displacement in distance as the secondary connecting piece 101b.

[0036] The spring 12 connects the two sets 10a, 10b of flaps 100. It is thus attached to one 10a of the sets 10a, 10b, and to the other of the sets 10a, 10b by means respectively of the primary connecting piece 101a which connects the flaps 100 of one 10a of the sets 10a, 10b, and of the secondary connecting piece 101b which connects the flaps 100 of the other 10b of the sets 10a, 10b. Thus, one of its ends 120a (illustrated on the figure 5a ) is attached to the primary connecting piece 101a, and the other (illustrated on the figure 5a ) of its ends 120b (illustrated on the figure 5b ) is attached to the secondary connecting piece 101b.

[0037] As illustrated on the figures 2a And 2b , the spring 12 is configured to be tensioned from above when the two sets 10a, 10b of flaps 100 are in the closed position p2. The figure 7 illustrates the shutters 100 of the upper track 10a closed and the shutters 100 of the lower track 10b closed (phase a).

[0038] As illustrated on the figures 3a And 3b , the spring 12 is configured to relax (rest position) so as to position one 10a of the sets of shutters 100 in the open position p1 while the other 10b of the sets of shutters 100 is held in the closed position p2. figure 7 illustrates the shutters 100 of the upper track 10a open and the shutters 100 of the lower track 10b closed (phase b).

[0039] As illustrated on the figures 4a And 4b , the spring 12 is configured to be tensioned from below when the two sets 10a, 10b of flaps 100 are in the open position p1. The figure 7 illustrates the shutters 100 of the high track 10a open and the shutters 100 of the low track 10b open (phase c).

[0040] As illustrated on the figures 2a à 4b , the upper lever 13a and the lower lever 13b are connected by the connecting rod 14. The upper lever 13a is thus configured to be driven by the connecting rod 14. The lower lever 13b is configured to be driven by the actuator 11 because it is connected to said actuator 11 and consequently it is configured to push the connecting rod 14.

[0041] As illustrated on the figure 5a , in a non-limiting embodiment, the axis of rotation Ax4 of the upper lever 13a is located on the same plane as the axis of rotation Ax5 of each flap 100 of the assembly 10a. This allows for good kinematics. For the sake of clarity, the figure 5b illustrates only one flap 100. The axis of rotation Ax2 of the lower lever 13b is located on the same plane as the axis of rotation Ax4 of the upper lever 13a.

[0042] As illustrated on the figure 5a , the axis of rotation Ax4 of the upper lever 13a is distant by a distance d1 from the support point 143 of the connecting rod 14 on the upper lever 13a. As illustrated in the figure 5a , the rotation axis Ax5 of each flap 100 of the assembly 10a has the same distance d1 with a fixing point 1001 of each flap 100 on the primary connecting piece 101a. In a non-limiting embodiment, the distance d1 is less than 30mm (millimeters). Thus, the primary dead travel cam 131a of the upper lever 13a performs a movement identical in distance to the primary connecting piece 101a.

[0043] The primary dead travel cam 131a of the upper lever 13a is configured to cooperate with at least one primary drive finger 102a of the primary connecting piece 101a. In the non-limiting example illustrated in the figure 6a , it cooperates with two primary drive fingers 102a. In this case, it is a double dead travel cam. The secondary dead travel cam 131b of the lower lever 13b is configured to cooperate with at least one secondary drive finger 102b of the secondary connecting piece 101b. In the non-limiting example illustrated in the figure 6a , it cooperates with two secondary drive fingers 102b. In this case, it is a double dead stroke cam.

[0044] In a non-limiting embodiment, the primary dead travel cam 131a can take positions between -90° and +90°. The -90° position (illustrated in the figure 2b ) corresponds to all the shutters 100 of the set 10a closed (illustrated on the figure 2a ). The 0° position (illustrated on the figure 3b ) corresponds to all the shutters 100 of the set 10a open (illustrated on the figure 3a ). The +90° position (illustrated on the figure 4b ) corresponds to all the shutters 100 of the set 10a open (illustrated on the figure 4a ).

[0045] In a non-limiting embodiment, the secondary dead travel cam 131b can take positions between -90° and +90°. The -90° position (illustrated in the figure 2b ) corresponds to all the shutters 100 of the set 10b closed (illustrated on the figure 2a ). The 0° position (illustrated on the figure 3b ) corresponds to all the shutters 100 of the set 10b closed. (illustrated on the figure 3a ). The +90° position (illustrated on the figure 4b ) corresponds to all the 100 shutters of the set 10b open (illustrated on the figure 4a ).

[0046] So, as illustrated on the figures 2a And 2b , when the high track 10a and the low track 10b are in the closed position p2, the primary dead travel cam 131a is in a -90° position and the secondary dead travel cam 131b is also in a -90° position.

[0047] So, as illustrated on the figures 3a And 3b , when the upper track 10a is in the open position p1 and the lower track 10b is in the closed position p2, the primary dead travel cam 131a is in a 0° position and the secondary dead travel cam 131b is also in a 0° position.

[0048] So, as illustrated on the figures 4a And 4b , when the high track 10a and the low track 10b are in the open position p1, the primary dead travel cam 131a is in a position at +90° and the secondary dead travel cam 131b is also at +90°.

[0049] Thus, to move from the closed position p2 where all the flaps 100 are closed to the open position p1 where all the flaps 100 are open, the primary stroke cam 131a and the secondary stroke cam 131b will have rotated +180°.

[0050] Positions other than -90°, 0° and +90° may be assumed. Thus, in another non-limiting example, the primary dead travel cam 131a is in a -45° position and the secondary dead travel cam 131b is also in a -45° position. In this case, the flaps 100 of the high track 10a are half open while the flaps 100 of the low track 10b remain closed. Thus, in another non-limiting example, the primary dead travel cam 131a is in a +45° position and the secondary dead travel cam 131b is also in a +45° position. In this case, the flaps 100 of the low track 10b are half open while the flaps 100 of the high track 10a are already fully open. It should be noted that the shutters 100 of the upper track 10a and the lower track 10b cannot be half open at the same time.

[0051] It will be noted that when the primary dead travel cam 131a and the secondary dead travel cam 131b are between an angle of -90° and 0°, the upper path 10a is influenced while the lower path 10b remains in the closed position p2. Whereas when the primary dead travel cam 131a and the secondary dead travel cam 131b are between an angle of 0° and +90°, the lower path 10b is influenced while the upper path 10a remains in the open position p1. A set 10a, 10b of flaps 100 is thus operated independently of each other.

[0052] Thus, depending on the control strategy of the flaps 100, the flaps 100 of the assembly 10a and / or of the assembly 10b can be opened more or less in order to allow more or less air to pass under the engine hood.

[0053] The connecting rod 14 which connects the upper lever 13a and the lower lever 13b is configured to drive the upper lever 13a, namely it is configured to rotate the upper lever 13a.

[0054] As illustrated on the figure 2a , when the high track 10a and the low track 10b are in the closed position p2, the connecting rod 14 is close to the spring 12 and is in a so-called low position p3.

[0055] As illustrated on the figure 3a , when the upper track 10a is in the open position p1 and the lower track 10b is in the closed position p2, the connecting rod 14 is further away from the spring 12, and is in a so-called intermediate position p4.

[0056] As illustrated on the figure 4a , when the high track 10a and the low track 10b are in the open position p1, the connecting rod 14 is again close to the spring 12 and is in a so-called high position p5.

[0057] The controlled flap system 1 of a vehicle thus described is configured to implement a method 2 for controlling flaps 100 (otherwise called control method 2), said flaps 100 forming part of two sets 10a, 10b of flaps 100. The control method 2 is described below with reference to figures 8 et 9 . The control is carried out by actuator 11.

[0058] The sequence illustrated in the figure 7 is taken as a non-limiting example. As illustrated in the figure 7 , the shutters 100 of the high track 10a and the low track 10b are initially closed p2 (phase (a)). The high track 10a and the low track 10b are in the closed position p2. The shutters 100 of the high track 10a will be opened before those of the low track 10b (phase (b)). Then, the shutters 100 of the low track 10b will be opened (phase (c)). Finally, the shutters 100 of the high track 10a and the low track 10b will all be open. The high track 10a and the low track 10b will be in the open position p1.

[0059] The piloting method 2 comprises the following steps according to a non-limiting embodiment.

[0060] As illustrated on the figure 8 , the control method 2 comprises an initial step E0), illustrated F0(10a, p2, 10b, p2), in which the two sets 10a, 10b of flaps 100 are initially positioned in the closed position p2. When the upper track 10a and the lower track 10b are initially in the closed position p2, the spring 12 is stretched upwards by the primary connecting piece 101a. It is thus tensioned from above. Furthermore, the primary dead travel cam 131a of the upper lever 13a is positioned at -90° as well as the secondary dead travel cam 131b of the lower lever 13b. The primary drive finger 102a of the upper track 10a is in abutment in the primary dead travel cam 131a. The secondary drive finger 102b of the lower track 10b is in abutment in the secondary dead travel cam 131b.

[0061] As illustrated on the figure 8 , in step E1), illustrated F1(10a, p1, 10b p2), one 10a of the sets 10a, 10b of shutters 100 is positioned in the open position p1 before the other 10b of the sets of shutters 100. In the non-limiting example illustrated, it is the high track 10a which is positioned in the open position p1.

[0062] The actuator 11 which is connected to the lower lever 13b rotates the secondary dead travel cam 131b of the lower lever 13b counterclockwise. It thus moves from the -90° position to 0°. The secondary dead travel cam 131b slides along the secondary drive finger 102b of the secondary connecting piece 101b. The secondary connecting piece 101b does not move. The lower track 10b whose flaps 100 are connected by the secondary connecting piece 101b does not change position. The flaps 100 of the lower track 10b remain closed.

[0063] The lower lever 13b which is also connected to the connecting rod 14 when it starts to move drives said connecting rod 14; it pushes it upwards. The latter performs a circular stroke and rises. The connecting rod 14 which is also connected to the upper lever 13a drives said upper lever 13a and rotates the primary dead travel cam 131a of the latter in the counterclockwise direction. It thus passes from the -90° position to 0°. The primary dead travel cam 131a releases the primary drive finger 102a of the primary connecting piece 101a. The spring 12 which is connected to the primary connecting piece 101a relaxes, and the primary connecting piece 101a descends downwards. The flaps 100 of the upper track 10a open.

[0064] Thus, we have the shutters 100 of the upper channel 10a which are open, and the shutters 100 of the lower channel 10b which remain closed. We are in a configuration of a part of the shutters 100 of the controlled shutter system 1 open and another part of the shutters 100 closed.

[0065] As illustrated on the figure 8 , in step E2), illustrated F2(10a, p1, 10b, p1), the other 10b of the sets 10a, 10b of shutters 100 is positioned in the open position p1. In the non-limiting example illustrated, it is the lower track 10b which is positioned this time also in the open position p1.

[0066] The actuator 11, which is connected to the lower lever 13b, causes the secondary dead travel cam 131b of the lower lever 13b to rotate counterclockwise again. The secondary dead travel cam 131b thus moves from the 0° position to +90°. It has thus completed a rotation of -90° again. The secondary drive finger 102b of the lower track 10b, which is in abutment on the secondary dead travel cam 131b of the lower lever 13b, drives the secondary connecting piece 101b downwards due to the rotation of the secondary dead travel cam 131b. The spring 12, which is connected to the secondary connecting piece 101b, is stretched downwards by the secondary connecting piece 101b. It is thus tensioned from below. The flaps 100 of the lower track 10b open.

[0067] The lower lever 13b, which is also connected to the connecting rod 14, when it starts to move, drives said connecting rod 14; it always pushes it upwards. The latter continues its circular stroke and continues to rise. The connecting rod 14, which is also connected to the upper lever 13a, drives said upper lever 13a and rotates the primary dead travel cam 131a of the latter counterclockwise. The primary dead travel cam 131a thus moves from the -0° position to +90°. It has thus completed a further rotation of -90°. The primary dead travel cam 131a slides along the primary drive finger 102a of the primary connecting piece 101a. The primary connecting piece 101a does not move. The upper track 10a, the flaps 100 of which are connected by the primary connecting piece 101a, does not change position. The shutters 100 of the high track 10a remain open.

[0068] Thus, we have the shutters 100 of the lower channel 10b which open, and the shutters 100 of the upper channel 10a which remain open. We are in a configuration of all the shutters 100 of the controlled shutter system 1 open.

[0069] It will be noted that to move from the initial step to step E2, the primary stroke cam 102a and the secondary dead stroke cam 102b have rotated -180° (counterclockwise).

[0070] It will be noted that to control both sets 10a, 10b of flaps 100 in the open position p1, said control method 2 executes the step of controlling in the open position p1 one 10a of the sets 10a, 10b of flaps 100 before the other 10b of the sets 10a, 10b of flaps 100. Thus, to pass from phase a to the figure 7 , at phase c on the figure 7 we go through phase b on the figure 7 .

[0071] Furthermore, to control both sets 10a, 10b of flaps 100 back into the closed position p2, in a non-limiting embodiment illustrated in the figure 9 , said piloting method 2 executes the piloting step in closed position p2 the other 10b of the sets 10a, 10b of flaps 100 before one 10a of the sets 10a, 10b of flaps 100. Thus, to pass from phase c to the figure 7 , at phase a on the figure 7 we go through phase b on the figure 7 . In this case, as illustrated in the figure 9 , the piloting method 2 further comprises: a step of E3), illustrated F3(10a, p1, 10b, p2) to drive the other 10b of the assemblies 10a, 10b into the closed position p2. In the non-limiting example illustrated, it is the assembly 10a that it positions in the closed position p2, and a step of E4), illustrated F4(10a, p2, 10b, p2) to drive one 10a of the assemblies 10a, 10b into the closed position p2. In the non-limiting example illustrated, it is the assembly 10b that it subsequently positions in the closed position p2.

[0072] Of course, the description of the invention is not limited to the embodiments described above and to the field described above. Thus, in another non-limiting embodiment, the axis of rotation Ax1 of the actuator 11 is located in a plane different from that Ax2 of the lower lever 13b and from that Ax3 of each flap of the assembly 10b. Thus, in another non-limiting embodiment, the axis of rotation Ax4 of the upper lever 13a is located in a plane different from that Ax5 of each flap of the assembly 10a.

[0073] Thus, the invention described presents in particular the following advantages: it allows for a flexible shutter control strategy, it allows for two sets 10a, 10b of shutters 100 controlled with a single actuator 11, it allows for only all or part of the shutters 100 to be opened or closed.

Claims

1. System (1) of controlled flaps for a vehicle, comprising two sets (10a, 10b) of flaps (100), each set (10a, 10b) of flaps (100) being able to assume an open position (p1) and a closed position (p2), said system (1) of controlled flaps further comprising an actuator (11) configured to drive one (10a) of the sets (10a, 10b) of flaps (100) into the open position (p1) before the other (10b) of the sets (10a, 10b) of flaps (100), characterized in that said system of controlled flaps further comprises: - a spring (12) connecting the two sets (10a, 10b) of flaps (100), - an upper lever (13a) with a primary lost motion cam (131a) configured to be driven by a connecting rod (14), - a lower lever (13b) with a secondary lost motion cam (131b) configured to be driven by said actuator (11), and - said connecting rod (14) connected to said actuator (1) and connecting said upper lever (13a) and said lower lever (13b).

2. System (1) of controlled flaps according to the preceding claim, wherein said spring (12) is configured to: - be tensioned when the two sets (10a, 10b) of flaps (100) are in the closed position (p2), - relax so as to position in the open position (p1) one (10a) of the sets (10a, 10b) of flaps (100), - be tensioned when the two sets (10a, 10b) of flaps (100) are in the open position (p1).

3. System (1) of controlled flaps according to either one of the preceding claims, wherein the two sets (10a, 10b) of flaps (100) are initially in the closed position (p2).

4. System (1) of controlled flaps according to any one of the preceding claims, wherein one (10a) of the sets (10a) of flaps (100) extends in a different plane from the other (10b) of the sets (10a, 10b) of flaps (100) or the two sets (10, 10b) of flaps (100) are coplanar.

5. System (1) of controlled flaps according to any one of the preceding claims, wherein said system (1) of controlled flaps further comprises: - a primary connecting part (101a) connecting the flaps (10) of one (10a) of the sets (10a, 10b) of flaps (100) and comprising at least one primary drive finger (102a) which comes into abutment in the primary lost motion cam (131a) when one (10a) of the sets of flaps (100) is in the open position (p1) or in the closed position (p2), - a secondary connecting part (101b) connecting the flaps (100) of the other (10b) of the sets (10a, 10b) of flaps (100) and comprising at least one secondary drive finger (102b) which comes into abutment in the secondary lost motion cam (131b) when the other (10b) of the sets (10a, 10b) of flaps (100) is in the open position (p1) or in the closed position (p2), and which slides along said secondary lost motion cam (131b) when one (10a) of the sets is in the open position (p1).

6. Method (2) for controlling a system (1) of controlled flaps of a vehicle according to one of the preceding claims, said flaps (100) forming part of two sets (10a, 10b) of flaps (100), each set (10a, 10b) of flaps (100) being able to assume an open position (p1) and a closed position (p2), characterized in that said control method (2) comprises a step of driving one (10a) of the sets (10a, 10b) of flaps (100) into the open position (p1) before the other (10a) of the sets (10a, 10b) of flaps (100).

7. Control method (2) according to the preceding claim, wherein the two sets (10a, 10b) of flaps (100) are initially in the closed position (p2).

8. Control method (2) according to either one of the preceding Claims 6 and 7, wherein, to drive the two sets (10a, 10b) of flaps (100) into the open position (pl), said control method (2) executes the step of driving one (10a) of the sets (10a, 10b) of flaps (100) into the open position (p1) before the other (10b) of the sets (10a, 10b) of flaps (100).

9. Control method (2) according to any one of the preceding Claims 6 to 8, wherein, to drive the two sets (10a, 10b) of flaps (100) into the closed position (p2), said control method (2) executes the step of driving the other (10b) of the sets (10a, 10b) of flaps (100) into the closed position (p2) before one (10a) of the sets (10a, 10b) of flaps (100).