WO2024251837A1 - Ensemble de transmission dans un véhicule automobile et comprenant un dispositif de blocage - Google Patents
Ensemble de transmission dans un véhicule automobile et comprenant un dispositif de blocage Download PDFInfo
- Publication number
- WO2024251837A1 WO2024251837A1 PCT/EP2024/065502 EP2024065502W WO2024251837A1 WO 2024251837 A1 WO2024251837 A1 WO 2024251837A1 EP 2024065502 W EP2024065502 W EP 2024065502W WO 2024251837 A1 WO2024251837 A1 WO 2024251837A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- pinion
- locking sleeve
- crown
- locking
- transmission assembly
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/0059—Braking of gear output shaft using simultaneous engagement of engaging means, e.g. clutches or brakes, applied for different gear ratios
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K1/00—Arrangement or mounting of electrical propulsion units
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K17/00—Arrangement or mounting of transmissions in vehicles
- B60K17/04—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location or kind of gearing
- B60K17/043—Transmission unit disposed in on near the vehicle wheel, or between the differential gear unit and the wheel
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K1/00—Arrangement or mounting of electrical propulsion units
- B60K2001/001—Arrangement or mounting of electrical propulsion units one motor mounted on a propulsion axle for rotating right and left wheels of this axle
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
- B60Y2200/00—Type of vehicle
- B60Y2200/90—Vehicles comprising electric prime movers
- B60Y2200/91—Electric vehicles
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H3/00—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion
- F16H3/02—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion
- F16H3/08—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts
- F16H3/087—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts characterised by the disposition of the gears
- F16H3/091—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts characterised by the disposition of the gears including a single countershaft
- F16H3/0915—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts characterised by the disposition of the gears including a single countershaft with coaxial input and output shafts
Definitions
- TITLE OF THE INVENTION Transmission assembly in a motor vehicle and comprising a locking device
- the invention relates to a transmission assembly comprising a locking device intended to lock an axle or wheel drive train in a motor vehicle. Particular interest is given to vehicle axles equipped with electric motorization, for the front axle or the rear axle. Also targeted is a local electric motorization system specific to a wheel.
- the locking device of interest here by mechanical engagement of a locking member, commonly called a “parking brake”, is used conventionally in particular on vehicles with automatic transmission. This type of locking device is also used in electric or hybrid vehicles.
- the transmission locking device is activated when the driver positions the transmission selection lever in the “P” position, generally when the vehicle is stationary.
- the locking device in question here is distinct and complementary to another brake system called a parking brake, also present on motor vehicles, and acting directly at the wheels of the vehicle.
- Said parking brake also acts as an emergency brake to slow down and immobilize the vehicle.
- the parking brake which is the subject of the present invention is intended and designed to be engaged only at zero or near-zero speed.
- the inventors sought to improve the situation and to propose a new configuration for performing the parking brake function, in particular more compact, in particular for an electric motor assembly.
- a transmission assembly for a motor vehicle comprising a locking device by mechanical engagement of at least one locking member, the assembly comprising at least:
- a primary shaft configured to rotate around a first axis and configured to be driven by a motor
- a secondary shaft mounted to rotate around a second axis, equipped with a second pinion and a third pinion, with a different number of teeth, the second pinion being engaged with the first pinion,
- a fork configured to move the locking sleeve along the first axis between the unlocking position and the locking position, characterized in that in the locking position, the locking sleeve directly connects the output ring gear to the first pinion or the primary shaft in rotation, thereby blocking rotation of the output ring gear due to the engagement between the first pinion and the output ring gear via a mutual gear ratio other than 1.
- the characteristic “the output crown being in kinematic relation with at least one wheel of the vehicle” includes in particular either a direct engagement for the case of an electric motorization of a single wheel (the term ‘E-wheel’ is sometimes used) or an indirect engagement relating to two wheels via a differential (the term ‘E-axle’ is then used).
- locking sleeve can also be called “coupling sleeve”, “dog clutch”, or even “sliding clutch”. It is an annular member comprising internal grooves, as will be seen in more detail below.
- the locking sleeve forms the aforementioned locking member.
- the parking brake function is arranged on the main axis, and the need for a specific parking brake wheel, in particular one offset from the main axis, is avoided.
- the number of parts required to implement the function is lower in the proposed solution than in the known prior art.
- the proposed system is therefore devoid of a specific parking brake wheel and any other component relating thereto.
- the proposed configuration proves to be compact and simple to manufacture and assemble.
- the proposed configuration is lighter than configurations known in the art.
- the rest position could be on the other side, namely on the primary shaft side.
- the motor driving the primary shaft may be an electric motor having a rotor rotatably connected to the primary shaft.
- the motor is a motor internal combustion, the primary shaft then being driven directly or indirectly, or via a clutch by the crankshaft of this engine.
- the output ring is connected to a single wheel of the vehicle directly or via a permanent gear (e.g. a reduction gear).
- a permanent gear e.g. a reduction gear
- the output ring gear is connected to two wheels of the vehicle via a differential comprising a ring gear and two satellites, the output ring gear being formed by the differential ring gear.
- the transmission can be locked upstream of the differential and the parking brake function is provided with a single locking sleeve for two wheels of the vehicle axle.
- This configuration is ideal for electrically powered axles, whether they are arranged at the front or rear of the vehicle.
- the parking brake function is compatible with a differential lock function, both functions can be implemented on the axle in question.
- the primary shaft is hollow and includes an axial through bore.
- This bore allows the passage of a wheel shaft (also called a half-axle shaft) which extends from an output of the differential to one of the wheels.
- a wheel shaft also called a half-axle shaft
- the arrangement is completely coaxial, except for the secondary shaft.
- a first axial end portion (71) equipped with first external splines, complementary to internal splines of the locking sleeve and forming a location for the rest/unlocking position of the locking sleeve, the first axial end portion being rigid in rotation with the part carrying the differential crown or the axial end portion forming an integral part of the differential crown.
- the splines By means of the above-mentioned splines, it is possible to pass torque between the locking sleeve and the output crown.
- the splines preferably extend parallel to the first axis.
- the locking sleeve remains at least partly astride the first axial end portion, in particular when the locking sleeve is in the locking position. In the unlocked position, the entire locking sleeve surrounds the first axial end portion, this being its rest position.
- the primary shaft may comprise a second axial end portion with second external splines adapted to receive internal splines of the locking sleeve.
- entry chamfers are provided on the outer grooves of the second axial end portion, on the side where the sleeve is docked.
- Entry chamfers can also be provided on the radially inner grooves of the locking sleeve on the side of its front face, the one which advances for the coupling.
- the first axial end portion (71) and the second axial end portion (52) are opposite each other, face each other axially and are separated by a gap (E1) of less than 5 millimeters.
- the first axial end portion and the second axial end portion have outer diameters of substantially the same dimension.
- the longitudinal grooves of the locking sleeve can thus easily slide from the first axial end portion to cover the second axial end portion.
- the number of splines can be between 20 and 40. This number makes it possible to minimize the probability of difficulty in engaging tooth against tooth and still have a sufficiently large size of the spline profiles to take up torque.
- the locking sleeve has an outer diameter (D1) and an axial dimension (L1), the outer diameter being less than 12 cm, preferably less than 10 cm, and the axial dimension preferably less than 4 cm.
- the proposed solution is compact.
- the locking sleeve only absorbs torque at zero speed, so it can be dimensioned as precisely as possible. This is how it differs from a differential or gearbox locking dog clutch which must operate over a wide range of rotation speeds.
- the first pinion comprises external splines adapted to receive internal splines of the locking sleeve. This is an alternative to the solution presented above where the receiving splines are arranged on the primary shaft. Here the splines are arranged on the primary pinion.
- entry chamfers are provided on the outer splines of the first pinion, on the side where the sleeve is docked.
- the invention also relates to a powertrain for a vehicle comprising an electric motor and a transmission assembly as described above.
- the motor is an axial flux motor. In one aspect, the motor is a radial flux motor.
- the invention also relates to an electrically powered axle for a vehicle comprising a motor, two wheels, two wheel shafts connected to a differential, and a transmission assembly as described above comprising said differential.
- FIG.1 schematically illustrates in section an example of a transmission assembly according to the present invention, with the locking sleeve in the unlocked position;
- FIG.2 schematically illustrates in section the transmission assembly of figure 1, with the locking sleeve in the locking position;
- FIG.3 schematically illustrates in section another example of a transmission assembly according to the present invention
- FIG.4 schematically illustrates in section yet another example of a transmission assembly according to the present invention
- FIG.5 schematically illustrates in section the area of the locking sleeve
- FIG.6 illustrates in perspective an example of a locking sleeve
- FIG.7 illustrates in sectional view a detail of the engagement of the grooves.
- FIGS 1 and 2 show an example of an electrically powered axle.
- This axle may be part of the front axle of a vehicle or the rear axle of a motor vehicle. It may be a steered or non-steered wheel axle.
- an electrically powered axle comprises a drive unit, a transmission including a differential, two axle shafts and two wheels.
- the transmission may include a reducer, where appropriate with several selectable reduction ratios (gearbox) and optionally, as will be seen below, devices for connecting two rotating elements together.
- such an axle comprises a left wheel and a right wheel, not shown in the figures.
- a differential 7 is arranged in a middle portion of the axle.
- a first output of the differential is connected in rotation to a left wheel shaft ARG which is itself connected in rotation to the left wheel.
- the other output of the differential is connected in rotation to a right wheel shaft ARD which is itself connected in rotation to the right wheel.
- the differential 7 makes it possible to have differentiated wheel speeds, in particular for example when the vehicle takes a turn or also when one of the wheels slips or slides.
- a differential locking device may be provided which allows for certain phases of vehicle life, to connect in rotation one of the output shafts with the differential body.
- the two ARG, ARD wheel shafts rotate around a first axis noted A1.
- the body 70 of the differential also rotates around the axis A1.
- the axle is motorized, in the example illustrated by an electric motor marked 6.
- the axis of the electric motor coincides with the first axis A1.
- the rotor 60 is flat and the magnetic flux is axial.
- the motor may be a radial magnetic flux motor. It is not excluded that the electric motor has an axis different from the first axis.
- the rotor 60 is mounted on a shaft called the primary shaft 5.
- the primary shaft is hollow and includes an axial through bore, marked 50.
- the left wheel shaft ARG is housed inside the bore 50 of the primary shaft 5.
- the left wheel shaft ARG and the primary shaft 5 are coaxial. A small functional clearance is provided to allow the wheel shaft to rotate inside the bore 50 of the primary shaft.
- the left wheel shaft ARG is connected to an output bevel gear 77 of the differential 7.
- the primary shaft 5 On the primary shaft 5 is arranged a first pinion marked 21.
- the first pinion may be an integral part of the primary shaft or may be an added part mounted to rotate securely on the primary shaft 5.
- the primary shaft 5 may include shoulders, bearing surfaces, annular grooves for circlips, keyway grooves and any other device or function known per se.
- the torque produced by the electric motor 6 is delivered downstream through the first pinion 21 and in particular its external teeth.
- the primary shaft has an end on the differential side, the use of which will be seen later.
- the transmission assembly comprises a secondary shaft 2.
- the secondary shaft is rotatably mounted about a second axis denoted A2.
- the second axis A2 is separated from the first axis A1 by a distance typically between 10 cm and 20 cm.
- the secondary shaft 2 is equipped with a second pinion 22 and a third pinion 23.
- the second pinion 22 and the third pinion 23 have a different number of teeth.
- the second pinion 22 is engaged with the first pinion 21.
- the secondary shaft may be manufactured in one piece with the second and third pinions included.
- one of the two pinions may be an insert mounted on splines or by means of keying or pinning or by means of smooth shrink-fitting.
- the two pinions 22, 23 may be inserts rigidly mounted on the shaft.
- the secondary shaft 2 may be hollow or solid. As with the primary shaft, the secondary shaft may include shoulders, bearing surfaces, annular grooves for circlips, keyways and any other device or function known per se.
- the differential 7 comprises an external crown with teeth.
- this external crown is also called the “output crown” marked 3.
- the output crown 3 is centered on the axis A1 and coaxial with the primary shaft 5.
- the third pinion 23 is engaged with the output crown 3.
- the output crown rotates more slowly than the primary shaft due to the cascade of two reductions, namely a first reduction obtained by the engagement of the second pinion on the first pinion, then that which couples the output crown with the third pinion.
- the differential crown 3 drives the satellite axles 75, the bevel gears 76 in turn drive the bevel gears 77 connected to the respective wheel shafts.
- the differential is not described further because it is assumed to be known per se.
- a locking sleeve 1 is provided.
- the differential body 70 comprises a splined bearing surface 71 for receiving said locking sleeve 1 around this splined bearing surface.
- This splined bearing surface 71 is herein referred to as the first axial end portion.
- the splined bearing surface 71 comprises splines herein referred to as first outer splines 73, which receive radially inner splines of the locking sleeve.
- the locking sleeve 1 can also be called a coupling sleeve, dog clutch, dog clutch, or even a sliding clutch. It is an annular member comprising internal shapes comprising grooves 12, oriented longitudinally relative to the first axis, and visible in FIGS. 6 and 7.
- the locking sleeve 1 comprises an annular groove 10 open towards the outside.
- the annular groove is framed by two rims 16.
- At least one free end of a fork 4 is engaged in the annular groove 10.
- the fork 4 has a semicircular shape which engages in the groove over an angular range of approximately 180°.
- the locking sleeve 1 is centered on the first axis A1.
- the locking sleeve 1 is axially movable, between an unlocking position denoted P1 and a locking position denoted P2.
- the fork 4 is movable along the axis A1 to cause the locking sleeve to move along the first axis A1 between the unlocking position P1 shown in FIG. 1 and the locking position P2 shown in FIG. 2.
- the fork 4 can be moved in translation along the first axis.
- the fork 4 can be rotatably mounted and be rotated relative to an auxiliary axis distant from the first axis and perpendicular to the latter.
- the fork 4 does not rotate about the first axis A1 whereas in the general case when the vehicle is moving, the locking sleeve 1 rotates about the axis A1. It can be provided that in the unlocked position, at rest, the locking sleeve is in an indexed position and that the end of the fork slides without contact in the annular groove 10.
- Q5 is the rotational speed of the primary shaft
- Q3 is the rotational speed of the differential body.
- control to move the fork 4 to the left, i.e. towards the coupling position is only authorized if the speed of the vehicle is zero or even optionally almost zero, i.e. less than 3 km/h.
- a control unit is responsible for the control logic of the position of the locking sleeve, depending on the position of the transmission lever ‘P’ or Non-‘P’ and the current speed of the vehicle.
- the locking sleeve only works in torque at zero speed, i.e. it is never subjected to a torque while it is rotating, which makes it possible to size its diameter D1 and its grooves 12 as precisely as possible. It is also possible to relax the choice of material or to do without certain heat treatments, if we compare this locking sleeve with a gearbox sliding sleeve or a differential locking sleeve.
- the grooves 12 of the locking sleeve are provided with inlet chamfers 14 of pronounced shape, the end of the groove being in the form of a point.
- the inlet chamfers 14 are provided in particular on the side of the front face 17 of the sleeve which advances during the translation towards the locking position.
- the primary shaft 5 comprises a second axial end portion 52 with the splines 54 capable of receiving the radially internal splines 12 of the locking sleeve.
- the splines 54 on the primary shaft 5 side also have entry chamfers 55.
- the number of grooves 12 can be between 20 and 40. Of course, the number of grooves chosen is the same for the locking sleeve which forms the female part as well as the two male parts arranged end to end which are covered at least in part by the locking sleeve.
- the inner diameter D3 of the locking sleeve is slightly larger than the diameter of the primary shaft excluding the splines.
- the wheel shafts have an external diameter D5 smaller than the diameter D4 of the bore 50 provided in the primary shaft.
- the locking sleeve 1 has an axial dimension L1, preferably less than 4 cm.
- the external diameter D1 is less than 12 cm, and preferably less than 10 cm. Depending on the torque specifications, the diameter D1 can even be smaller. In an exemplary embodiment, L1 + D1 can be chosen to be less than 14 cm.
- the first axial end portion 71 and the second axial end portion 52 are opposite each other, i.e. face each other and are separated by a gap E1 of less than 5 millimeters.
- the gap E1 is less than 4 mm, or even less than 3 mm.
- the first axial end portion 71 and the second axial end portion 52 have external diameters D2 of substantially the same dimension.
- the coupling sleeve 1 covers a portion 25 of the first pinion instead of directly the primary shaft.
- the first pinion 21 is coaxial and integrally connected in rotation with the primary shaft 5
- the functionality is identical to what was explained above for the first embodiment.
- this fourth pinion 44 of the third embodiment comprises a splined bearing surface for accommodating the locking sleeve, which forms the first axial end portion 71.
- output crown refers to either the crown of a differential body or a peripheral portion of a conventional gear pinion.
- the output crown 3 is configured to be in kinematic relationship with at least one wheel of the vehicle.
- the characteristic “the kinematic relationship with at least one wheel of the vehicle” means a direct engagement for the case of an electric motorization of a single wheel.
- the characteristic “the kinematic relationship with at least one wheel of the vehicle” means an indirect engagement with respect to the two wheels via the differential 7.
- All parts of the transmission assembly are made of metal, particularly steel or cast iron.
- the parts of the transmission assembly are lubricated by splashing oil into the bottom of the housing or forced through an oil pump.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Retarders (AREA)
- Lock And Its Accessories (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
Description
Claims
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP24731341.4A EP4724720A1 (fr) | 2023-06-09 | 2024-06-05 | Ensemble de transmission dans un véhicule automobile et comprenant un dispositif de blocage |
| CN202480049282.6A CN121925527A (zh) | 2023-06-09 | 2024-06-05 | 机动车辆中的变速器总成,该总成包括锁止装置 |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR2305843A FR3149661B1 (fr) | 2023-06-09 | 2023-06-09 | Ensemble de transmission dans un véhicule automobile et comprenant un dispositif de blocage |
| FRFR2305843 | 2023-06-09 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2024251837A1 true WO2024251837A1 (fr) | 2024-12-12 |
Family
ID=87747956
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP2024/065502 Ceased WO2024251837A1 (fr) | 2023-06-09 | 2024-06-05 | Ensemble de transmission dans un véhicule automobile et comprenant un dispositif de blocage |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP4724720A1 (fr) |
| CN (1) | CN121925527A (fr) |
| FR (1) | FR3149661B1 (fr) |
| WO (1) | WO2024251837A1 (fr) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011083985A2 (fr) * | 2010-01-08 | 2011-07-14 | (주)브이이엔에스 | Automobile |
| US20160223082A1 (en) | 2013-10-10 | 2016-08-04 | Bayerische Motoren Werke Aktiengesellschaft | Parking Lock for Motor Vehicles |
| DE102017217829A1 (de) * | 2017-10-06 | 2019-04-11 | Zf Friedrichshafen Ag | Elektrischer Achsantrieb eines Fahrzeuges mit Parksperrenvorrichtung |
| US20210276409A1 (en) * | 2016-08-30 | 2021-09-09 | Dana Heavy Vehicle Systems Group, Llc | Electric drive axle powerpath & the drive axle made therewith |
-
2023
- 2023-06-09 FR FR2305843A patent/FR3149661B1/fr active Active
-
2024
- 2024-06-05 WO PCT/EP2024/065502 patent/WO2024251837A1/fr not_active Ceased
- 2024-06-05 CN CN202480049282.6A patent/CN121925527A/zh active Pending
- 2024-06-05 EP EP24731341.4A patent/EP4724720A1/fr active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011083985A2 (fr) * | 2010-01-08 | 2011-07-14 | (주)브이이엔에스 | Automobile |
| US20160223082A1 (en) | 2013-10-10 | 2016-08-04 | Bayerische Motoren Werke Aktiengesellschaft | Parking Lock for Motor Vehicles |
| US20210276409A1 (en) * | 2016-08-30 | 2021-09-09 | Dana Heavy Vehicle Systems Group, Llc | Electric drive axle powerpath & the drive axle made therewith |
| DE102017217829A1 (de) * | 2017-10-06 | 2019-04-11 | Zf Friedrichshafen Ag | Elektrischer Achsantrieb eines Fahrzeuges mit Parksperrenvorrichtung |
Also Published As
| Publication number | Publication date |
|---|---|
| FR3149661B1 (fr) | 2025-04-25 |
| FR3149661A1 (fr) | 2024-12-13 |
| EP4724720A1 (fr) | 2026-04-15 |
| CN121925527A (zh) | 2026-04-24 |
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