Selection lever

Abstract

Title of the invention: Selection lever The present invention relates to a selection lever (50) arranged in a manual gearbox (1) of a vehicle, the selection lever (50) comprising at least one engagement finger (54) of at least one speed of the manual gearbox (1), the engagement finger (54) taking at least a first position (64) configured to allow electric propulsion of the vehicle and a plurality of other positions (68, 70, 72, 74) configured to control a speed of the manual gearbox (1), the selection lever (50) comprising means prohibiting the control of a speed of the manual gearbox (1) when the engagement finger (54) is in the first position (64). Abstract figure: Figure 2

Description

Title of the invention: Selection lever

[0001] The present invention relates to the field of hybrid vehicles, and more particularly the selection of the propulsion mode of such vehicles.

[0002] Hybrid vehicles are vehicles comprising both a thermal engine and an electric motor, both dedicated to the propulsion of the vehicle. A user of a hybrid vehicle can therefore choose between, on the one hand, a thermal propulsion mode involving the thermal engine and, on the other hand, an electric propulsion mode involving the electric motor.

[0003] A selection of the propulsion mode is generally carried out via an automatic gearbox, but it is also possible to implement a manual gearbox equipped with a gear selector. When the thermal propulsion mode is selected, a movement of this gear selector by the user mechanically causes a movement of transmission parts, such as forks or sliding levers, within the gearbox; however, the electric propulsion mode requires that these transmission parts are not stressed.

[0004] It is then necessary to use a system which on the one hand allows the movement of the transmission parts when using the thermal propulsion mode and on the other hand ensures that these parts are not driven when using the electric propulsion mode, for example by using a detection mechanism.

[0005] The main subject of the present invention is thus a selection lever arranged in a manual gearbox of a vehicle, the selection lever comprising at least one finger for engaging at least one speed of the manual gearbox, the engagement finger taking at least a first position configured to authorize electric propulsion of the vehicle and a plurality of other positions configured to control a speed of the manual gearbox, the selection lever comprising a means preventing the control of a speed of the manual gearbox when the engagement finger is in the first position.

[0006] The manual gearbox of the vehicle, for example a hybrid vehicle, comprises a gear selector operable by a user of this vehicle. The movement of this gear selector causes the movement of the selection lever, and more particularly of the engagement finger of this selection lever. This engagement finger can take several positions during its movements, among which a first position configured to authorize electric propulsion of the vehicle and a plurality of other positions configured to control a speed of the manual gearbox. Thus, when the engagement finger is in the first position, the vehicle can for example move forward or backward using a mode of electric propulsion, involving an electric motor. Conversely, when the engagement finger is in any of the plurality of other positions, i.e. when it controls one of the gears, the vehicle can move forward or backward using a thermal propulsion mode, involving an internal combustion engine. It is however necessary to ensure that when the engagement finger is in the first position, i.e. when the electric propulsion mode is selected, the gears of the thermal propulsion mode cannot be engaged, it being understood that this would cause a movement of transmission parts within the gearbox which would not be compatible with the use of the electric propulsion mode. The selection lever has for this purpose a means preventing the control of a gear of the manual gearbox when the engagement finger is in its first position.According to one example, the means preventing the control of a speed of the manual gearbox when the engagement finger is in its first position is a mechanical means.

[0007] Such a selection lever therefore makes it possible to alternate between the thermal propulsion mode and the electric propulsion mode in a safe manner.

[0008] According to a characteristic of the invention, the selection lever comprises at least one engagement finger position sensor configured to detect at least the first position and inform the vehicle of the switch to electric propulsion.

[0009] This position sensor therefore makes it possible to detect when the vehicle switches to electric propulsion mode and informs the vehicle, or even the user of this vehicle.

[0010] According to another characteristic of the invention, the selection lever comprises a rotary support on which the engagement finger is mounted.

[0011] A change in position of the engagement finger, for example from the first position to one of the plurality of positions configured to control a speed of the manual gearbox, is thus effected by a rotation of the rotary support.

[0012] According to a characteristic of the invention, the means preventing the control of a speed of the manual gearbox when the engagement finger is in the first position takes the form of an angular sector, this angular sector being adapted to block a plurality of gear engagement forks arranged in the manual gearbox. In such a situation, the forks are held at their neutral point by the angular sector.

[0013] These gear engagement forks are implemented when the engagement finger is in one of the plurality of positions configured to control a speed of the manual gearbox; they are transmission parts which participate in transmitting a torque coming from the thermal engine. They are for this purpose capable of cooperating with the engagement finger, for example by means of notches carried by them in which the engagement finger engages. When the engagement finger is in the first position, it cannot cooperate with these forks and transmit the torque of the thermal engine.

[0014] It is thus understood that the first position, configured to authorize electric propulsion, corresponds to an absence of association between the engagement finger and any of the engagement forks. According to the invention, this absence of association is secured by the angular sector, which can cooperate with the engagement forks in place of the engagement finger in order to block them. The angular sector can therefore, depending on the propulsion mode, lock or unlock the engagement forks.

[0015] According to another characteristic of the invention, the engagement finger takes a second position configured to authorize electric propulsion, the first position corresponding to a movement towards the front of the vehicle and the second position corresponding to a movement towards the rear of the vehicle.

[0016] It is thus understood that the first position uses the electric motor to move the vehicle forward while the second position uses it to move the vehicle backward.

[0017] According to one characteristic, the engagement finger position sensor is configured to detect the second position and inform the vehicle of the switch to electric propulsion.

[0018] In the same way as for the first position, the position sensor detects when the vehicle uses the electric propulsion mode to reverse and informs the vehicle and by extension its user.

[0019] According to a characteristic of the invention, the engagement finger position sensor is configured to detect the manual gearbox gear engaged and inform the vehicle of the use of the manual gearbox.

[0020] The position sensor is therefore notably configured to detect an association or an absence of association between the engagement finger and an engagement fork.

[0021] According to another characteristic of the invention, the position sensor is a contactless sensor.

[0022] For example, the position sensor may be a Hall effect sensor.

[0023] According to a characteristic of the invention, the rotary support carries a magnetic track, the position sensor comprising a detector of this magnetic track.

[0024] The detector of the position sensor is thus capable of detecting a magnetic field of this magnetic track, this magnetic field being variable on a surface of the magnetic track. Different values of the magnetic field correspond to the different positions that the engagement finger can take, and the recognition of one of these values allows the position sensor to determine the specific position in which the engagement finger is located.

[0025] According to one feature, a billing system locks the first and / or second position of the engagement finger.

[0026] This billing system is, like the engagement finger, carried by the rotary support. During a rotation, it can put the engagement finger and one of the engagement forks into angular relation for the thermal propulsion mode, or on the contrary angularly offset the engagement finger relative to these engagement forks for the electric propulsion mode. Here, the term "angular relation" means that the engagement finger is arranged relative to one of the engagement forks so as to be able to cooperate with its notch.

[0027] The invention further relates to a hybrid motor vehicle, comprising an internal combustion engine connected to a manual gearbox and an electric motor, these motors participating in the movement of the vehicle, as well as a selection lever as described previously.

[0028] The selection lever allows the vehicle to be moved according to a propulsion mode involving one or other of these engines.

[0029] According to a characteristic of the invention, the selection lever is controlled by a device for selecting a propulsion mode of the vehicle from among a propulsion mode by the internal combustion engine connected to the manual gearbox and the electric propulsion mode, this propulsion mode selection device being configured to be controlled by at least one gear selector.

[0030] Such a selection device corresponds for example to an H-shaped grid, an actuation of the gear selector within this H-shaped grid causing a movement of the engagement finger in the manual gearbox.

[0031] Other characteristics, details and advantages of the invention will emerge more clearly on reading the description which follows on the one hand, and examples of embodiment given for informational and non-limiting purposes with reference to the appended drawings on the other hand, in which:

[0032] [Fig-1] is a longitudinal sectional view of a manual gearbox;

[0033] [Fig.2] illustrates, schematically, a selection lever according to the invention arranged in the manual gearbox of [Fig.l], an engagement finger of this selection lever being in a first position;

[0034] [Fig.3] is a schematic representation of the selection lever of [Fig.2] according to a cross-section, in general view;

[0035] [Fig.4] illustrates, schematically, the selection lever of [Fig.l] in sectional view longitudinal;

[0036] [Fig.5] is a schematic representation of the selection lever according to a section transverse, the engagement finger of the selection lever being in another position ;

[0037] [Fig.6] is another schematic representation of the selection lever according to a cross-section, the engagement finger of the selector lever being in yet another position;

[0038] [Fig.7] is another schematic representation of the selection lever according to a cross-section, the engagement finger of the selector lever being in yet another position;

[0039] [Fig.8] is another schematic representation of the selection lever according to a cross-section, the engagement finger of the selector lever being in yet another position;

[0040] [Fig.9] is a schematic representation of a selection device.

[0041] The features, variants and the different embodiments of the invention may be combined with each other, in various combinations, provided that they are not incompatible or mutually exclusive. In particular, variants of the invention may be imagined comprising only a selection of features described below in isolation from the other features described, if this selection of features is sufficient to confer a technical advantage and / or to differentiate the invention from the prior art.

[0042] In the figures, the elements common to several figures retain the same reference.

[0043] [Fig.l] thus illustrates, schematically, a manual gearbox 1 according to a longitudinal sectional view, this manual gearbox 1 being able for example to be integrated into a motor vehicle. Such a motor vehicle is of the hybrid type and comprises two propulsion means, with here an internal combustion engine illustrated schematically by the reference 2, and an electric motor not shown in the figures. It is therefore understood that the vehicle can move either according to a thermal propulsion mode involving the internal combustion engine 2, or according to an electric propulsion mode involving the electric motor.

[0044] The manual gearbox 1 is driven by the internal combustion engine 2. The internal combustion engine 2 carries a clutch device 4 which is actuated by a hydraulic cylinder 6. This hydraulic cylinder 6 can for example be controlled by a user of the hybrid motor vehicle equipped with the manual gearbox 1 when this user actuates a clutch pedal of the hybrid motor vehicle.

[0045] The manual gearbox 1 makes it possible to transmit a torque from the internal combustion engine 2 to the wheels of the vehicle. More particularly, this torque is transmitted to a primary shaft 8 and to a secondary shaft 10. Primary shaft 8 and secondary shaft 10 are respectively centered on a first pivot axis Y1 and a second pivot axis Y2.

[0046] The manual gearbox 1 comprises several gear ratios, with here a first gear, a second gear, a third gear, a fourth gear, a fifth gear, a sixth gear and a reverse gear. This reverse gear allows the hybrid motor vehicle to move towards the rear of this vehicle, while the other gears generate a movement of the hybrid motor vehicle towards the front.

[0047] For this purpose, the primary shaft 8 carries fixed gears 12, 14 with a first fixed gear 12 for the first speed and a second fixed gear 14 for the second speed. The primary shaft 8 also carries four idler gears, with a first idler gear 16 for the third speed, a second idler gear 18 for the fourth speed, a third idler gear 20 for the fifth speed and a fourth idler gear 22 for the sixth speed. These gears 12, 14, 16, 18, 20, 22 are capable of cooperating with teeth of the secondary shaft 10.More particularly, they are capable of cooperating with idler teeth 24, 26 including a first idler tooth 24 for the first speed and a second idler tooth 26 for the second speed, as well as fixed teeth 28, 30, 32, 34 including a first fixed tooth 28 for the third speed, a second fixed tooth 30 for the fourth speed, a third fixed tooth 32 for the fifth speed and a fourth fixed tooth 34 for the sixth speed.

[0048] Reverse gear can be engaged via a tertiary shaft 36, separate from the primary 8 and secondary 10 shafts and having a pivot axis Z parallel to the first and second pivot axes Y1, Y2. This tertiary shaft 36 comprises a pinion 38 capable of cooperating with the idler teeth 24 of the secondary shaft 10.

[0049] Furthermore, the secondary shaft 10 and the tertiary shaft 36 each have a toothed wheel 40, 42 capable of cooperating with a differential crown 44. This differential crown 44 is included in a housing 46 which also contains a torque distribution mechanism 48 to wheels of the hybrid motor vehicle.

[0050] A selection from among the different ratios of the manual gearbox 1 is made by means of a selection lever 50, which will be described in relation to FIGS. 2 to 8. This selection lever 50 is connected to a gear selector 51, which can be actuated by the user of the hybrid motor vehicle. This gear selector 51 cooperates with the selection lever 50 via a first rotation lever 51a and a second translation lever 51b in order to allow respectively the rotational movement and the translation of the selection finger 54 along the axis of rotation X. This gear selector 51 therefore participates in the selection of the gears of the gearbox 1 manual gear for the thermal propulsion of the hybrid motor vehicle, but it can also participate in the selection of the electric propulsion.

[0051] The selection lever 50 comprises a rotary support 52, here a tubular-shaped element, which pivots about an axis of rotation X parallel to the pivot axes Yl, Y2 and to the pivot axis Z. The rotary support 52 can further perform a translation along this axis of rotation X. The rotary support 52 of the selection lever 50 carries an engagement finger 54, which is also a tubular-shaped element. This engagement finger 54 can therefore move according to rotational and / or translational movements relative to the axis of rotation X. Such movements allow the engagement finger 54 to cooperate with engagement forks of the gears of the manual gearbox 1, at least a portion of the engagement forks being aligned radially in a plane perpendicular to the axes of rotation X, pivot Yl, Y2 and pivot Z.Among these engagement forks, there is a first engagement fork 56 which corresponds to reverse gear, a second engagement fork 58 which corresponds to the first and second speeds, a third engagement fork 60 which corresponds to the third and fourth speeds and a fourth engagement fork 62 which corresponds to the fifth and sixth speeds, according to a plurality of positions of the engagement finger 54 which will be described in more detail later. Here, the term "cooperate" means that the engagement finger 54 can engage in control members of these engagement forks 56, 58, 60, 62 so as to, ultimately, transmit the torque from the internal combustion engine 2.

[0052] As mentioned above and in the case of a hybrid motor vehicle, propulsion can be provided by means of the internal combustion engine 2 and the manual gearbox 1, as well as by the electric motor. Such propulsion by the electric motor means that the torque of the internal combustion engine 2 is not transmitted to the wheels of the vehicle. For this purpose, the engagement finger 54 is able to take at least one position in which it does not cooperate with any of the engagement forks 56, 58, 60, 62, this position corresponding to the electric propulsion mode and being illustrated in FIGS. 2 and 3.

[0053] It is thus understood that in addition to the selection among the speeds of the manual gearbox 1, the selection lever 50 makes it possible, by moving the engagement finger 54, to choose between, on the one hand, the propulsion mode involving the internal combustion engine 2 and, on the other hand, the propulsion mode involving the electric motor. Thus, the gear selector 51 can control a device 53 for selecting the vehicle propulsion mode among the thermal propulsion mode by the internal combustion engine 2 connected to the manual gearbox 1 and the electric propulsion mode by the electric motor. Such a selection device 53 can, for example, example corresponding to an H-shaped grid, an actuation of the gear selector 51 within this H-shaped grid causing a movement of the engagement finger 54 in the manual gearbox 1. This selection device 53 will be described subsequently in relation to [Fig.9].

[0054] Figures 2 and 3 therefore illustrate a position of the engagement finger 54 configured to allow the electric propulsion of the hybrid motor vehicle. This position of the engagement finger 54 may be a first angular position 64 corresponding to a forward movement of the hybrid motor vehicle, or a second angular position 66 corresponding to a rearward movement of the vehicle, by means of the electric propulsion. It is thus understood that the first angular position 64 uses the electric motor to move the hybrid motor vehicle forward while the second angular position 66 uses it to move this vehicle backward. Such angular positions 64, 66 are more particularly illustrated schematically in [Fig.4], which shows a portion of the selection lever 50 in a sectional view.In this figure, the engagement finger 54 is shown both in its first angular position 64 and in its second angular position 56, but it is understood that during operation of the selection lever 50 the engagement finger 54 can only take one of these angular positions 64, 66 at a time.

[0055] The first angular position 64 and the second angular position 66 of the engagement finger 54 correspond to an absence of cooperation between this engagement finger 54 and any one of the engagement forks 56, 58, 60, 62. When the engagement finger 54 is in one or the other of this first angular position 64 or second angular position 66, the torque of the internal combustion engine 2 is therefore not transmitted to the wheels via the manual gearbox 1.

[0056] Conversely, the torque from the internal combustion engine 2 can be transmitted when the engagement finger 54 cooperates with one of the engagement forks 56, 58, 60, 62. [Fig. 5] illustrates the manual gearbox 1 with the engagement finger 54 cooperating with the first engagement fork 56, [Fig. 6] illustrating the engagement finger 54 cooperating with the second engagement fork 58, [Fig. 7] illustrating the engagement finger 54 cooperating with the third engagement fork 60 and [Fig. 8] illustrating the engagement finger 54 cooperating with the fourth engagement fork 62.The engagement finger 54 is thus in a third angular position 68 when it cooperates with the first engagement fork 56, in a fourth angular position 70 when it cooperates with the second engagement fork 58, in a fifth angular position 72 when it cooperates with the third engagement fork 60 and in a sixth angular position 74 when it cooperates with the fourth engagement fork 62.

[0057] When the engagement finger 54 is in the third angular position 68 as visible in [Fig. 5], it therefore cooperates with the first engagement fork 56 to drive the tertiary shaft 36 in rotation about the pivot axis Z, this tertiary shaft 36 in turn driving the differential crown 44 in order to transmit the torque to the wheels of the hybrid motor vehicle by means of the torque distribution mechanism 48.

[0058] Similarly, when the engagement finger 54 is in one of the fourth, fifth or sixth angular positions 70, 72, 74, it cooperates respectively with the second engagement fork 58, the third engagement fork 60 or the fourth engagement fork 62 so as to rotate the primary shaft 8 about the first pivot axis Y1 or the secondary shaft 10 about the second pivot axis Y2, which in turn drive the differential crown 44 in order to transmit the torque to the wheels of the hybrid motor vehicle.

[0059] According to the invention, in order to ensure that when the engagement finger 54 is in one of the angular positions 64 or 66 corresponding to the electric propulsion mode, the gears of the manual gearbox 1 cannot be engaged. The selection lever 50 comprises a means preventing the control of one of these gears when the engagement finger 54 is in the first angular position 64 or in the second angular position 66. Such a means makes it possible in particular to secure the use of each of the propulsion modes of the hybrid motor vehicle, one in relation to the other.

[0060] The means preventing the control of one of the speeds of the manual gearbox 1 when the engagement finger 54 is in the first angular position 64 or in the second angular position 66 may for example take the form of at least one angular sector 76, which corresponds to a substantially planar portion of disc. This angular sector 76 is visible in FIGS. 2 to 8 and is carried by a rotary element 78. Such a rotary element 78 may, like the rotary support 52, rotate around the axis of rotation X, but it differs from this rotary support 52 in that its translation along the axis of rotation X is blocked.According to the invention, the angular sector 76 is adapted to lock the engagement forks 56, 58, 60, 62 of the manual gearbox 1 by rotating about this axis of rotation X, that is to say that it can cooperate with them in place of the engagement finger 54 when the latter is in its first angular position 64 or in its second angular position 66. In other words, the angular sector 76 can, depending on the propulsion mode of the hybrid motor vehicle, lock or unlock the engagement forks 56, 58, 60, 62. A locking of these engagement forks 56, 58, 60, 62 of the manual gearbox 1 is particularly visible in [Fig.4], corresponding to a neutral position of these . forks.

[0061] A passage from the first angular position 64 of the engagement finger 54 to the second angular position 66 and vice versa is ensured by the translation of the rotary support 52 along the axis of rotation X. Furthermore, a passage from one to the other of the angular positions 68, 70, 72, 74 of the engagement finger 54 corresponding to a change of speed of the manual gearbox 1 is ensured by the rotation of the rotary support 52 around this axis of rotation X.

[0062] The position of the engagement finger 54 can be locked by a balling system 80, particularly visible in [Fig.2]. This balling system 80 comprises balling ramps 82 which are carried by the rotary support 52, such balling ramps 82 being able to interact with a balling 84 carried by the rotary element 78. Such an interaction between these balling ramps 82 and this balling 84 makes it possible to stabilize the rotary support 52, and thus to lock the engagement finger 54 in one of its positions.

[0063] The position taken by the engagement finger 54 can be detected by a position sensor 86. Such a position sensor 86 is thus configured to detect at least the first angular position 64 and the second angular position 66 which correspond to the electric propulsion mode, so as to be able to inform the hybrid motor vehicle and thus use the angular sector 76 to block the engagement forks 56, 58, 60, 62 accordingly. This position sensor 86 can further be configured to detect the engagement of a gear of the manual gearbox 1, i.e. the cooperation between the engagement finger 54 and any one of the engagement forks 56, 58, 60, 62, and inform the hybrid motor vehicle of the use of the thermal propulsion mode, and of the gear engaged.It is thus understood that the position sensor 86 is configured to detect cooperation or a lack of cooperation between the engagement finger 54 and an engagement fork 56, 58, 60, 62.

[0064] For this purpose, the rotary support 52 carries a magnetic track 88, of which a detector 90 of the position sensor 86 can detect the magnetic field. The position sensor 86 therefore comprises both the magnetic track 88 and the detector 90, which can for example involve a contactless sensor such as a Hall effect sensor.

[0065] Since the position sensor 86 must be capable of detecting several positions of the engagement finger 54, the magnetic track 88 does not have a uniform magnetic field over its entire surface. Each position of the engagement finger 54 is thus associated with a different magnetic field value. The detector 90 is therefore capable, depending on the detected magnetic field value, of determining the position of the engagement finger 54.

[0066] As mentioned previously, actuation of the gear selector 51 within the selection device 53 shown in [Fig.9] causes a movement of the finger engagement 54 in the manual gearbox 1. The selection device 53 forms a first selection pattern 55 between the different speeds which correspond to the ratios of the manual gearbox 1 and a second selection pattern 57 between at least two electric propulsion modes, the gear selector 51 being able to move within one or the other of the selection patterns 55, 57. The first selection pattern 55 is dedicated to the thermal propulsion mode and is therefore connected to the manual gearbox 1; as such, it cooperates with the different ratios of this manual gearbox 1. The first selection pattern 55 comprises for this purpose seven locations each corresponding to a ratio of the manual gearbox 1, among which six locations 59, 61, 63, 65, 67, 69 for the forward speeds and one location 71 for the reverse speed 93.The first location 59, corresponding to a low speed 89, is arranged at a first end 73 of the first selection pattern 55 while the sixth location 69, corresponding to a high speed 91, is arranged at a second end 75 of the first selection pattern 55. The seventh location 71 which corresponds to the reverse speed 93 is arranged at the first end 73 of the first selection pattern 55.

[0067] The second selection diagram 57 is dedicated to the electric propulsion mode. This second selection diagram 57 is arranged next to the first selection diagram 55, in the vicinity of its second end 75, for example laterally to the right of the first selection diagram 55. The second selection diagram 57 comprises two locations 77, 79 which each correspond to an electric propulsion mode, with an eighth location 77 for engaging a first electric propulsion mode and a ninth location 79 for engaging a second electric propulsion mode.

[0068] As visible in [Fig.9], the distribution of the locations 59, 61, 63, 65, 67, 69, 71, 77, 79 of the selection diagrams 55, 57 is carried out with respect to a separation plane 81 which extends in the direction perpendicular to a main direction of elongation A of the hybrid motor vehicle. The first location 59 of the first gear, the third location 63 of the third gear, the fifth location 67 of the fifth gear, the seventh location 71 of the reverse gear 93 and the ninth location 79 of the second electric propulsion mode are arranged on a first side 83 of the separation plane 81, while the second location 61 of the second gear, the fourth location 65 of the fourth gear, the sixth location 69 of the sixth gear and the eighth location 77 of the first electric propulsion mode are arranged on a second side 85 of the separation plane 81.

[0069] It will thus be noted that locations 71 and 79 of the reverse gear 93 and of the second electric propulsion mode corresponding to a rearward movement of the hybrid motor vehicle are arranged on the same side of the separation plane 81, here the first side 83.

[0070] Transitions from the first selection pattern 55 to the second selection pattern 57 on the one hand, and within the first selection pattern 55 on the other hand, are not free. It is understood here that such transitions require an action by the user on the selection device 53. Indeed, the latter comprises a securing means, which in a first position prevents the passage of the speed selector 51 from one selection pattern 55, 57 to the other as well as the passage of this speed selector 51 to the seventh location 71 of reverse gear 93. Conversely, in a second position of this securing means, these two movements are authorized. This securing means can for example be a trigger 87, which is shown schematically in [Fig.9].This trigger 87 is illustrated at two locations 87A and 87B, each corresponding to a location of the selection device 53 where the passage from the first position to the second position is required to authorize the movement of the speed selector 51. Thus, a first location 87A of the trigger 87 is represented at the first end 73 of the first selection diagram 55 for the passage of the speed selector 51 to the seventh location 71 of the reverse gear 93, a second location 87B of the trigger 87 being represented in the vicinity of the second end 75 of the first selection diagram 55 for the passage of the speed selector 51 to the eighth and ninth locations 77, 79 corresponding to the two electric propulsion modes. It is understood, however, that this is only a schematic representation and that there is a single trigger 87 arranged on the speed selector 51.

[0071] The present invention thus proposes a selection lever participating in choosing between a thermal propulsion mode and an electric propulsion mode, this selection lever comprising a means of ensuring that the engagement of the thermal propulsion mode is not possible when the electric propulsion mode is selected.

[0072] The present invention cannot, however, be limited to the means and configurations described and illustrated here and it also extends to any equivalent means and configuration as well as to any technically operative combination of such means.

Claims

Claims

1. Selection lever (50) arranged in a manual gearbox (1) of a vehicle, the selection lever (50) comprising at least one engagement finger (54) of at least one speed of the manual gearbox (1), the engagement finger (54) taking at least a first position (64) configured to allow electric propulsion of the vehicle and a plurality of other positions (68, 70, 72, 74) configured to control a speed of the manual gearbox (1), the selection lever (50) comprising a means prohibiting the control of a speed of the manual gearbox (1) when the engagement finger (54) is in the first position (64), this means prohibiting the control of a speed of the manual gearbox (1) when the engagement finger (54) is in the first position (64) taking the form of an angular sector (76),this angular sector (76) being adapted to block a plurality of gear engagement forks (56, 58, 60, 62) arranged in the manual gearbox (1).,

2. Selection lever (50) according to the preceding claim, comprising at least one position sensor (86) of the engagement finger (54) configured to detect at least the first position (64) and inform the vehicle of the switch to electric propulsion.

3. A selection lever (50) according to any preceding claim, comprising a rotatable support (52) on which the engagement finger (54) is mounted.

4. A selection lever (50) according to any preceding claim, wherein the engagement finger (54) assumes a second position (66) configured to enable electric propulsion, the first position (64) corresponding to forward movement of the vehicle and the second position (66) corresponding to rearward movement of the vehicle.

5. Selection lever (50) according to the preceding claim in combination with claim 2, wherein the position sensor (86) of the engagement finger (54) is configured to detect the second position (66) and inform the vehicle of the switch to electric propulsion.

6. A selection lever (50) according to any preceding claim in combination with claim 2, wherein the position sensor (86) of the engagement finger (54) is configured to detect the gear of the manual gearbox (1) engaged and inform the vehicle of the use of the manual gearbox (1).

7. A selection lever (50) according to any preceding claim, wherein the position sensor (86) is a non-contact sensor.

8. Selection lever (50) according to any one of the preceding claims in combination with claim 3, in which the rotary support (52) carries a magnetic track (88), the position sensor (86) comprising a detector (90) of this magnetic track (88).

9. A selection lever (50) according to any preceding claim in combination with claim 4, wherein a ball system (80) locks the first (64) and / or second position (66) of the engagement finger (54).

10. Hybrid motor vehicle, comprising an internal combustion engine (2) connected to a manual gearbox (1) and an electric motor, these motors (2) participating in the movement of the vehicle, as well as a selection lever (50) according to any one of the preceding claims.

11. Vehicle according to the preceding claim, in which the selection lever (50) is controlled by a device for selecting a propulsion mode of the vehicle from among a propulsion mode by the internal combustion engine connected to the manual gearbox (1) and the electric propulsion mode, this propulsion mode selection device being configured to be controlled by at least one gear selector (51).

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