WO2021028777A1 - Running gear for a vehicle and vehicle equipped with such a running gear - Google Patents

Running gear for a vehicle and vehicle equipped with such a running gear Download PDF

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Publication number
WO2021028777A1
WO2021028777A1 PCT/IB2020/057336 IB2020057336W WO2021028777A1 WO 2021028777 A1 WO2021028777 A1 WO 2021028777A1 IB 2020057336 W IB2020057336 W IB 2020057336W WO 2021028777 A1 WO2021028777 A1 WO 2021028777A1
Authority
WO
WIPO (PCT)
Prior art keywords
blade
shaft
vehicle
running gear
winding
Prior art date
Application number
PCT/IB2020/057336
Other languages
French (fr)
Inventor
David Ittah
Original Assignee
David Ittah
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by David Ittah filed Critical David Ittah
Publication of WO2021028777A1 publication Critical patent/WO2021028777A1/en

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Classifications

    • 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
    • B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
    • B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
    • B60K6/42—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by the architecture of the hybrid electric vehicle
    • B60K6/48—Parallel type
    • 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
    • B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
    • B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
    • B60K6/50—Architecture of the driveline characterised by arrangement or kind of transmission units
    • B60K6/52—Driving a plurality of drive axles, e.g. four-wheel drive
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W20/00—Control systems specially adapted for hybrid vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W30/00—Purposes of road vehicle drive control systems not related to the control of a particular sub-unit, e.g. of systems using conjoint control of vehicle sub-units
    • B60W30/18—Propelling the vehicle
    • B60W30/18009—Propelling the vehicle related to particular drive situations
    • B60W30/18027—Drive off, accelerating from standstill
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W30/00—Purposes of road vehicle drive control systems not related to the control of a particular sub-unit, e.g. of systems using conjoint control of vehicle sub-units
    • B60W30/18—Propelling the vehicle
    • B60W30/18009—Propelling the vehicle related to particular drive situations
    • B60W30/18109—Braking
    • B60W30/18127—Regenerative braking
    • 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
    • B60K17/16—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing of differential gearing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W2510/00—Input parameters relating to a particular sub-units
    • B60W2510/08—Electric propulsion units
    • B60W2510/081—Speed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2400/00—Special features of vehicle units
    • B60Y2400/16—Mechanic energy storages
    • B60Y2400/164—Springs
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/62—Hybrid vehicles

Definitions

  • the present invention relates to the automotive field, and relates to a running gear for a vehicle and a vehicle equipped with such a running gear.
  • a land motor vehicle is driven by means of one or more motors which propel the vehicle, via wheels, which support the vehicle and which are rotated by means of a set of transmission members which transmit the engine torque to the front and / or rear wheels via one or more drive shafts.
  • the torque that an electric, thermal or hybrid motor must provide to allow a vehicle to rotate the wheels, when it is desired to change the vehicle from a stopped state to a traveling state, is extremely important relative to the torque that the engine must provide to maintain the rotation of the drive shafts when the vehicle is cruising or in acceleration phase.
  • the start-up phase which consists in bringing a vehicle from a stopped state to a state in which it is moving, is that, among other things, which requires the most energy relative to the other phases of movement of the vehicle. vehicle.
  • the present invention aims to overcome the drawbacks of the prior art, and to do this relates to a running gear for a vehicle, comprising a wheel drive shaft and a device for driving said drive shaft in rotation, said device being remarkable in that it comprises:
  • an elastic blade movable between a compressed position according to which said blade is wound around a winding axis and a relaxed position according to which said blade is unwound relative to said winding axis, said blade being able to acquire energy when 'it changes from its relaxed position to its compressed position and to restore mechanical energy as it moves from its compressed position to its relaxed position;
  • a means for driving the winding shaft designed to drive said winding shaft of the blade in rotation when the speed of rotation of the drive shaft reaches a value lower than a predetermined threshold value; a means for transmitting force from the blade to the drive shaft, arranged to transmit the mechanical energy of the blade to said drive shaft when the blade passes from its compressed position to its relaxed position.
  • the running gear according to the invention allows, when the elastic blade moves from its compressed position to its relaxed position, to rotate the drive shaft of the vehicle wheels.
  • the blade winding shaft is rotated so as to allow the elastic blade to pass from its relaxed position to its compressed position.
  • the passage of the elastic blade from its relaxed position to its compressed position is obtained automatically thanks to the rotary drive means, which is designed to drive the winding shaft when the vehicle decelerates until it reaches a speed lower than a predetermined threshold value.
  • the winding shaft drive means drives the winding shaft of the blade, which passes from its relaxed position to its compressed position.
  • the blade As the blade moves from its compressed position to its relaxed position, it supplies mechanical energy to the driveshaft through the force transmission means.
  • the vehicle which was stationary after the braking phase, thus receives an initial torque and is driven in motion by the only mechanical energy induced by the relaxation of the elastic blade.
  • the running gear of the present invention makes it possible to set a vehicle in motion over a short distance without operating the main engine, which can be thermal, electric or hybrid; therefore, no energy is used.
  • the blade is contained inside a drum and has a first end secured to an internal wall of said drum and a second end fixed to the winding shaft of the blade;
  • the drive means of the blade winding shaft comprises a gearbox
  • the means for driving the winding shaft of the blade comprises a movement reversing device coupled to a clutch;
  • the movement reverser device and the clutch are mounted on the blade winding shaft;
  • the winding axis of the blade is substantially perpendicular to a longitudinal axis of the drive shaft; - the means for transmitting force from the blade to the drive shaft comprises a first bevel gear mounted at one end of the winding shaft of the blade and a second bevel gear mounted at a second end of the drive shaft.
  • the present invention also relates to a vehicle comprising a running gear according to the invention, remarkable in that the blade is housed in the passenger compartment of said vehicle, preferably at the front or at the rear of said vehicle.
  • the blade is housed in the spare wheel space of the vehicle.
  • FIG. 1 is an isometric view of a blade according to the invention, mounted in a drum.
  • FIG. 3 illustrates a running gear obtained according to a second embodiment of the invention.
  • FIG. 4 illustrates a running gear obtained according to a third embodiment of the invention.
  • FIG.5 illustrates a running gear obtained according to a fourth embodiment of the invention.
  • the elastic blade 1 can be obtained in a metallic material.
  • the elastic blade 1 can be obtained from a composite material, for example carbon fibers, in order to reduce the mass of the blade 1 and increase its strength.
  • the length, width and thickness of the blade 1 are calculated based on the initial torque that it is desired to provide to the vehicle equipped with the running gear of the invention.
  • the elastic blade 1 is preferably soft and flexible, which allows it to be wound around a winding axis 3.
  • the elastic blade 1 is contained inside a drum 5, for example cylindrical.
  • the elastic blade 1 has a first end 1a fixed to an internal wall 7 of the drum 5 and a second end 1b which is fixed to a winding shaft 9 of the blade 1.
  • the drum 5 comprises a cylindrical inner wall and several grooves distributed over its inner wall.
  • the drum 5 has ten grooves, which can be distributed evenly.
  • the grooves are arranged parallel to the axis of revolution of the cylindrical wall.
  • the winding shaft 9 of the blade 1 also comprises a groove along at least part of one of its generators.
  • the elastic blade 1 is embedded both in one of the grooves of the drum 5 and in the groove of the winding shaft 9, for securing the elastic blade 1 to the drum 5 and to the winding shaft 9.
  • the grooves made at the inner wall of the drum have a dimension substantially equal to that of a generatrix of the drum 5.
  • the elastic blade 1 is movably mounted between a compressed position in which it is wound around the winding axis 3 and a relaxed position in which it is unwound relative to the winding axis 3.
  • the drum 5 When mounted in a vehicle, the drum 5 is integral with the vehicle frame, so that it is fixed in position, both in rotation and in translation.
  • FIG. 2 illustrating a running gear 101 obtained according to a first embodiment of the invention.
  • the running gear 101 intended to be integral with a vehicle frame 102, comprises two drive shafts 103 and two devices 107 for driving the shafts 103 in rotation.
  • Each drive shaft 103 receives at the level of 'a first end 103 has a wheel 109.
  • the winding axis 3 of the blade 1 is substantially parallel to the longitudinal axis of the drive shaft 103, and preferably substantially coincident with the longitudinal axis of the drive shaft 103 .
  • the device 107 for driving in rotation comprises a force transmission means, arranged to transmit the mechanical energy of the elastic blade 1 to the drive shafts 103 of the vehicle when the elastic blade 1 passes from its compressed position to its relaxed position.
  • the force transmission means is constituted by the winding shaft 9.
  • Each drive shaft 103 receives at a second end 103b a movement reversing device 111, coupled to a clutch 113.
  • the assembly formed by the movement reversing device 111 and the clutch 113 forms a means for driving the winding shaft 9 of the elastic blade 1.
  • the winding shaft 9 has a first end fixed to the second end of the elastic blade 1, and a second end engaged with the movement reversing device 111.
  • the clutch 113 is controlled by a control means, for example a microprocessor (not shown), programmed to couple the reversing device of movement 111 to the drive shaft 103 when the speed of rotation of the drive shaft reaches a value less than a predetermined threshold value programmable and modifiable.
  • a control means for example a microprocessor (not shown), programmed to couple the reversing device of movement 111 to the drive shaft 103 when the speed of rotation of the drive shaft reaches a value less than a predetermined threshold value programmable and modifiable.
  • the threshold value of the speed of rotation of the drive shaft below which the clutch couples the motion reversing device to the drive shaft corresponds to a predetermined threshold speed of the vehicle.
  • the predetermined threshold value of the vehicle may be equal to 15 km / h. This threshold value can be adapted at will by G user.
  • the drive shaft 103 on which the device according to the invention is mounted does not cause rotation of the winding shaft 9 of the blade 1, the movement reversing device 111 being disconnected by the clutch 113.
  • the clutch 113 couples the motion reversing device 111.
  • the movement reverser device 111 thus activated, rotates the winding shaft 9 of the elastic blade 1 in a direction opposite to that of the drive shaft 103.
  • the winding shaft 9 of the blade 1, fixed to the blade 1, drives the blade 1 from its relaxed position to its compressed position, reached when the braking phase has continued until the vehicle reaches zero speed.
  • the blade 1 acquires energy during this winding phase.
  • the blade 1 remains in its compressed position in the drum 5 as long as
  • the relaxation of the blade 1 restores mechanical energy when it passes from its compressed position to its relaxed position, and rotates the winding shaft 9 in the opposite direction to that previously obtained to wind the blade 1 .
  • the drive shaft 103 thus drives the wheel 109 on which it is rotatably mounted.
  • the shaft 103 then receives an initial engine torque allowing the vehicle to move.
  • the heat engine and / or electric of the vehicle thus has, for this phase of setting in motion of the vehicle, practically no engine energy consumed, the heat engine not having used fuel and the electric motor not having used its battery, which represents a considerable saving of energy, thermal or electric.
  • the clutch disconnects the reversing device, and the heat engine and / or electric takes over.
  • the starting of the heat engine and / or electric is controlled electronically by a microprocessor.
  • the running gear 201 comprises two drive shafts 203, 205, each receiving at a first end a wheel 209.
  • the running gear 201 comprises a device 207 for driving the shaft 203 in rotation.
  • the winding axis 3 of the blade 1 is substantially perpendicular to the longitudinal axis of the shaft 203.
  • the force transmission means of the elastic blade 1 to the drive shaft of the running gear 201 comprises a first bevel gear 202 mounted at one end of the shaft d winding 9 of the blade 1 and a second bevel gear 204 mounted at the end of the shaft 203.
  • a third pinion 206 is mounted on the drive shaft 205 through a ball bearing 208. The rotation of the first pinion 202 rotates the second pinion 204 and the third pinion 206.
  • the means for transmitting force from the elastic blade 1 to the drive shaft of the running gear 201 comprises a wheel and worm assembly, or a cardan shaft, or a belt.
  • any means known to those skilled in the art for returning a rotational movement between two non-parallel axes can be used within the framework of the present invention.
  • the shaft 203 comprises a first half-shaft 203a which receives at a first end the wheel 209 and at a second end a clutch 213, coupled to a movement reversing device 211.
  • the shaft 203 comprises a second half-shaft 203b which receives at a first end the movement reversing device 211 and at a second end the second bevel gear 204 of the force transmission means.
  • the assembly formed by the movement reversing device 211 and the clutch 213 defines the drive means of the winding shaft 9 of the elastic blade 1.
  • the clutch 213 is controlled identically to the clutch 113 of the first embodiment. [0061]
  • the operation of the running gear 201 is now described.
  • the half-shaft 203b of the shaft 203, on which the second bevel gear 204 is mounted does not drive in rotation the winding shaft 9, the movement reversing device 211 being disconnected by the clutch 213.
  • the clutch 213 couples the movement reversing device 211.
  • the movement reversing device 211 thus activated, drives the right half-shaft 203b in rotation in a direction opposite to that of the half-shaft 203a.
  • the second bevel gear 204 of the half-shaft 203b then rotates the first gear 202 of the winding shaft 9 of the blade 1.
  • the winding shaft of the blade 1, fixed to one end of the blade 1, drives the blade 1 from its relaxed position to its compressed position, reached when the braking phase has continued until that the vehicle reaches zero speed.
  • Blade 1 acquires energy during this winding phase. Blade 1 remains in its compressed position in the drum as long as the user keeps the vehicle brake engaged.
  • the relaxation of the blade 1 restores mechanical energy when it passes from its compressed position to its relaxed position, and rotates the winding shaft 9 in the opposite direction to that previously obtained for winding the blade 1 .
  • the first bevel gear 202 mounted at the end of the winding shaft 9 and in engagement with the second bevel gear 204 and with the third bevel gear 206, thus drives the half-shaft 203b in rotation, which drives in rotation of the half-shaft 203a.
  • the shaft 205 is not rotated during the rotation of the third gear 206, due to its mounting on the shaft 205 via the ball bearing 208.
  • the half-shaft 203a then receives an initial engine torque making it possible to drive the wheel 209 on which it is mounted in rotation, then setting the vehicle in motion.
  • the thermal and / or electric engine of the vehicle thus has, for this phase of setting the vehicle in motion, practically no engine energy consumed, the engine thermal unit not having used fuel and the electric motor not having used its battery, which represents a considerable saving in energy, thermal or electric.
  • the thermal and / or electric motor takes over.
  • the starting of the heat engine and / or electric is controlled electronically by a microprocessor.
  • the running gear 301 comprises two drive shafts 303, 305, each receiving at a first end a wheel 309.
  • the running gear 301 comprises a device 307 for driving the shaft 303 in rotation.
  • the winding axis 3 of the blade 1 is substantially perpendicular to the longitudinal axis of the drive shaft 303.
  • the force transmission means of the elastic blade 1 to the drive shaft of the running gear comprises a first bevel gear 302 mounted at one end of the shaft d winding 9 of the blade 1 and a second bevel gear 304 mounted at a second end of the shaft 303.
  • a third pinion 306 is mounted on the drive shaft 305 through a ball bearing 308. The rotation of the first pinion 302 rotates the second pinion 304 and the third pinion 306.
  • the means for transmitting force from the elastic blade 1 to the drive shaft of the running gear 301 comprises a wheel and worm assembly, or a cardan shaft, or a belt.
  • any means known to those skilled in the art for returning a rotational movement between two non-parallel axes can be used within the framework of the present invention.
  • the running gear 301 also includes a movement reversing device 311, coupled to a clutch 313.
  • the assembly formed by the movement reversing device 311 and the clutch 313 defines the drive means of the winding shaft 9 of the elastic blade 1.
  • the clutch 313 is operated identically to the clutches 113 and 213 of the first and second embodiments.
  • the blade 1 acquires energy during this winding phase.
  • the blade 1 remains in its compressed position in the drum as long as the user G maintains the vehicle brake engaged.
  • the relaxation of the elastic blade 1 restores mechanical energy and drives the winding shaft 9 in rotation in the opposite direction to that previously obtained for winding the blade 1.
  • the shaft 305 is for its part not rotated during the rotation of the third pinion 306, due to its mounting on the shaft 305 via the ball bearing 308.
  • the drive shaft 303 then receives a initial motor torque which makes it possible to drive the wheel 309 on which it is mounted in rotation, then setting the vehicle in motion.
  • the thermal and / or electric engine of the vehicle thus has, for this phase of setting the vehicle in motion, practically no engine energy consumed, the engine thermal having not used fuel and the electric motor not having used its battery, which represents a considerable saving of energy, thermal or electric.
  • the elastic blade 1 has finished its expansion stroke and has reached its fully relaxed position, the heat engine and / or electric takes over.
  • the starting of the heat engine and / or electric is controlled electronically by a microprocessor.
  • the running gear 401 comprises two drive shafts 403, 405, each receiving at a first end a wheel 409.
  • the running gear 401 includes a device 407 for driving the shaft 403 in rotation.
  • the winding axis 3 of the blade 1 is substantially perpendicular to the longitudinal axis of the shaft 403.
  • the force transmission means of the elastic blade 1 to the drive shaft comprises a first bevel gear 402 mounted at one end of the shaft. winding 9 of the blade 1 and a second bevel gear 404 mounted at a second end of shaft 403.
  • a third pinion 406 is mounted on the drive shaft 405 through a ball bearing 408. The rotation of the first pinion 402 rotates the second pinion 404 and the third pinion 406.
  • the means for transmitting force from the elastic blade 1 to the drive shaft of the running gear 401 comprises a wheel and worm assembly, or a cardan, or a belt.
  • any means known to those skilled in the art for returning a rotational movement between two non-parallel axes can be used within the framework of the present invention.
  • the running gear 401 has neither a movement reversing device nor a clutch.
  • the drive in rotation of the winding shaft 9 of the blade 1 is obtained through a gearbox 415 with three positions, neutral ("neutral” in English), forward (“drive” in English ) and reverse.
  • the gearbox 415 is mounted on the winding shaft 9 of the elastic blade 1.
  • the gearbox can be controlled mechanically.
  • the gearbox is electronically controlled, thanks to a control means, for example a microprocessor, programmed to position the gearbox in "REVERSE” mode when the speed of rotation of the shaft 403 reaches a value. less than a predetermined threshold value.
  • the threshold value of the speed of rotation of the drive shaft below which the gearbox 403 is positioned in "REVERSE” mode corresponds to a predetermined threshold speed of the vehicle.
  • the predetermined threshold value of the vehicle is equal to 15 km / h. As said before, this threshold value can be adapted at will by the user.
  • the gearbox control means 415 positions the gearbox in the "NEUTRAL" position, position according to which the drive shaft 403 on which the second pinion 404 is mounted does not rotate the winding shaft 9 of the blade 1.
  • the gearbox control means causes the gearbox to switch from its position "NEUTRAL” to its "REVERSE” position.
  • the shaft 403 then drives the winding shaft 9 of the blade 1 thanks to the second pinion 404 mounted on the shaft 403 which meshes with the first pinion 402 mounted on the winding shaft 9 of the blade 1.
  • the box speed 415 in the "REVERSE” position, reverses the direction of rotation winding shaft 9.
  • the winding shaft 403 of the blade 1, fixed to one end of the blade 1, drives the blade 1 from its relaxed position to its compressed position, reached when the braking phase has continued until that the vehicle reaches zero speed.
  • the blade 1 acquires energy during this winding phase.
  • the blade 1 remains in its compressed position in the drum as long as the user G maintains the vehicle brake engaged.
  • the relaxation of the elastic blade 1 restores mechanical energy and drives the winding shaft 9 in rotation in the opposite direction to that obtained previously for winding the blade 1, due to the "FORWARD" position of the gearbox which is engaged.
  • the shaft 405, on the other hand, is not rotated during the rotation of the third gear 406, due to its mounting on the shaft 405 via the ball bearing 408.
  • the drive shaft 403 then receives an initial motor torque which allows the wheel 409 to be rotated on which it is mounted, thereby setting the vehicle in motion.
  • the thermal and / or electric engine of the vehicle thus has, for this phase of setting the vehicle in motion, practically no engine energy, the engine thermal having not used fuel and the electric motor not having used its battery, which represents a considerable saving of energy, thermal or electric.
  • the gearbox shifts from its "FORWARD” position to its "NEUTRAL” position, and the heat engine and / or electric motor takes over.
  • the starting of the thermal and / or electric engine is controlled electronically by a microprocessor.
  • the drum 5 can advantageously be housed in the passenger compartment of the vehicle.
  • the running gear 201, 301, 401 constitutes a rear axle of the vehicle
  • the blade 1 can for example be advantageously housed in the spare wheel space, generally dedicated to the storage of the spare wheel.
  • the running gear 101, 201, 301, 401 according to the invention preferably constitutes a vehicle rear axle. However, it is also planned to fit the running gear of the invention at the front of the vehicle, in this case defining the front axle of the vehicle. Also, the running gear of the invention is preferably used when the vehicle is of the front-wheel drive type. However, it can of course also be used when the vehicle is propulsion or all-wheel drive.
  • the device for driving the drive shaft in rotation can be activated and deactivated at will at the request of the user. For example, when a user wishes to park his vehicle, the device should be deactivated.
  • the fact of providing several grooves in the internal wall of the drum makes it possible, on the one hand, to maintain the elastic blade in position in the drum and, on the other hand, to 'Avoid breaking the blade when the blade winding shaft is rotated. Indeed, during rotation of the winding shaft, the end of the blade can thus be embedded in turn within the various grooves distributed on the inner wall of the drum. This increases the security of the device of the invention.
  • a vehicle equipped with the undercarriage of the invention greatly saves its main energy each time the vehicle is set in motion from an initial static state.
  • the present invention makes it possible to impart an initial speed to a vehicle from its stopped state to a state in which it is moving, without consumption of main energy (battery, fuel).
  • the present invention is referred to by the acronym "ISS" for "Initial Speed System”.
  • the present invention is not limited to the sole embodiments of this running gear and of this vehicle, described above solely by way of illustrative examples, but on the contrary it embraces all variants involving the technical equivalents of the means described as well as their combinations if these fall within the scope of the invention.

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  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Automation & Control Theory (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)
  • Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
  • Motor Power Transmission Devices (AREA)

Abstract

The invention relates to a running gear for a vehicle, comprising a wheel drive shaft and a device for rotating said shaft. According to the invention, the device comprises: an elastic blade (1) that can be moved between a compressed position and a relaxed position; a shaft (9) for winding the blade, in order to drive the blade from its relaxed position into its compressed position; a means for driving the winding shaft, in order to rotate the winding shaft when the rotational speed of the drive shaft reaches a value that is less than a predetermined threshold value; a force transmitting means arranged to transmit the mechanical energy of the blade to the drive shaft when the blade moves from its compressed position into its relaxed position. The invention also relates to a vehicle equipped with a running gear according to the invention.

Description

Description Description
Titre de l’invention : Train roulant pour véhicule et véhicule équipé d’un tel train roulant Title of the invention: Running gear for vehicles and vehicles equipped with such running gear
[0001] La présente invention s’inscrit dans le domaine de l’automobile, et concerne un train roulant pour véhicule et un véhicule équipé d’un tel train roulant. [0001] The present invention relates to the automotive field, and relates to a running gear for a vehicle and a vehicle equipped with such a running gear.
[0002] Un véhicule terrestre automobile est mû par l’intermédiaire d’un ou plusieurs moteurs qui propulsent le véhicule, par l’intermédiaire de roues, qui supportent le véhicule et qui sont mises en rotation grâce à un ensemble d’organes de transmission qui transmettent le couple du moteur aux roues avant et/ou arrières via un ou plusieurs arbres d’entraînement. [0002] A land motor vehicle is driven by means of one or more motors which propel the vehicle, via wheels, which support the vehicle and which are rotated by means of a set of transmission members which transmit the engine torque to the front and / or rear wheels via one or more drive shafts.
[0003] Le couple qu’un moteur électrique, thermique ou hybride doit fournir pour permettre à un véhicule de mettre en rotation les roues, lorsque l’on souhaite faire passer le véhicule d’un état arrêté à un état de déplacement, est extrêmement important rela tivement au couple que le moteur doit fournir pour entretenir la rotation des arbres d’entraînement lorsque le véhicule est en régime de croisière ou en phase d’accélération. The torque that an electric, thermal or hybrid motor must provide to allow a vehicle to rotate the wheels, when it is desired to change the vehicle from a stopped state to a traveling state, is extremely important relative to the torque that the engine must provide to maintain the rotation of the drive shafts when the vehicle is cruising or in acceleration phase.
[0004] La phase de démarrage, qui consiste à faire passer un véhicule d’un état arrêté à un état selon lequel il se déplace, est celle, entre autres, qui requiert le plus d’énergie rela tivement aux autres phases de déplacement du véhicule. [0004] The start-up phase, which consists in bringing a vehicle from a stopped state to a state in which it is moving, is that, among other things, which requires the most energy relative to the other phases of movement of the vehicle. vehicle.
[0005] La consommation d’énergie électrique ou de carburant pour mettre un véhicule en mouvement depuis un état statique initial est ainsi extrêmement élevée. [0005] The consumption of electrical energy or fuel to set a vehicle in motion from an initial static state is thus extremely high.
[0006] La présente invention vise à surmonter les inconvénients de l’art antérieur, et concerne pour ce faire un train roulant pour véhicule, comportant un arbre d’entraînement de roues et un dispositif d’entraînement en rotation dudit arbre d’entraînement, ledit dispositif étant remarquable en ce qu’il comporte : The present invention aims to overcome the drawbacks of the prior art, and to do this relates to a running gear for a vehicle, comprising a wheel drive shaft and a device for driving said drive shaft in rotation, said device being remarkable in that it comprises:
- une lame élastique, mobile entre une position comprimée selon laquelle ladite lame est enroulée autour d’un axe d’enroulement et une position détendue selon laquelle ladite lame est déroulée relativement audit axe d’enroulement, ladite lame étant apte à acquérir une énergie lorsqu’elle passe de sa position détendue vers sa position comprimée et à restituer une énergie mécanique lorsqu’elle passe de sa position comprimée vers sa position détendue ; an elastic blade, movable between a compressed position according to which said blade is wound around a winding axis and a relaxed position according to which said blade is unwound relative to said winding axis, said blade being able to acquire energy when 'it changes from its relaxed position to its compressed position and to restore mechanical energy as it moves from its compressed position to its relaxed position;
- un arbre d’enroulement de ladite lame, agencé pour entraîner ladite lame depuis sa position détendue vers sa position comprimée ; - a winding shaft of said blade, arranged to drive said blade from its relaxed position to its compressed position;
- un moyen d’entraînement de l’arbre d’enroulement, conçu pour entraîner en rotation ledit arbre d’enroulement de la lame lorsque la vitesse de rotation de l’arbre d’entraînement atteint une valeur inférieure à une valeur seuil prédéterminée ; - un moyen de transmission de force de la lame à l’arbre d’entraînement, agencé pour transmettre l’énergie mécanique de la lame audit arbre d’entraînement lorsque la lame passe de sa position comprimée vers sa position détendue. means for driving the winding shaft, designed to drive said winding shaft of the blade in rotation when the speed of rotation of the drive shaft reaches a value lower than a predetermined threshold value; a means for transmitting force from the blade to the drive shaft, arranged to transmit the mechanical energy of the blade to said drive shaft when the blade passes from its compressed position to its relaxed position.
[0007] Le train roulant selon l’invention permet, lorsque la lame élastique passe de sa position comprimée vers sa position détendue, d’entraîner en rotation l’arbre d’entraînement des roues du véhicule. [0007] The running gear according to the invention allows, when the elastic blade moves from its compressed position to its relaxed position, to rotate the drive shaft of the vehicle wheels.
[0008] L’arbre d’enroulement de la lame est entraîné en rotation de façon à permettre le passage de la lame élastique de sa position détendue vers sa position comprimée. Très avantageusement, le passage de la lame élastique de sa position détendue vers sa position comprimée est obtenu de façon automatique grâce au moyen d’entraînement en rotation, qui est conçu pour entraîner l’arbre d’enroulement lorsque le véhicule décélère jusqu’à atteindre une vitesse inférieure à une valeur seuil prédéterminée. [0008] The blade winding shaft is rotated so as to allow the elastic blade to pass from its relaxed position to its compressed position. Very advantageously, the passage of the elastic blade from its relaxed position to its compressed position is obtained automatically thanks to the rotary drive means, which is designed to drive the winding shaft when the vehicle decelerates until it reaches a speed lower than a predetermined threshold value.
[0009] Ainsi, lorsqu’un utilisateur freine le véhicule en mouvement jusqu’à franchir une vitesse seuil prédéterminée, le moyen d’entraînement de l’arbre d’enroulement entraîne l’arbre d’enroulement de la lame, qui passe de sa position détendue vers sa position comprimée. [0009] Thus, when a user brakes the moving vehicle to pass a predetermined threshold speed, the winding shaft drive means drives the winding shaft of the blade, which passes from its relaxed position to its compressed position.
[0010] Lorsque la lame passe de sa position comprimée vers sa position détendue, elle fournit une énergie mécanique à l’arbre d’entraînement par l’intermédiaire du moyen de transmission de force. Le véhicule, qui se trouvait à l’arrêt après la phase de freinage, reçoit ainsi un couple initial et est entraîné en mouvement par la seule énergie mécanique induite par la détente de la lame élastique. [0010] As the blade moves from its compressed position to its relaxed position, it supplies mechanical energy to the driveshaft through the force transmission means. The vehicle, which was stationary after the braking phase, thus receives an initial torque and is driven in motion by the only mechanical energy induced by the relaxation of the elastic blade.
[0011] Ainsi, le train roulant de la présente invention permet de mettre en mouvement un véhicule sur une courte distance sans faire fonctionner le moteur principal, qui peut être thermique, électrique ou hybride ; de ce fait, aucune énergie n’est utilisée. Thus, the running gear of the present invention makes it possible to set a vehicle in motion over a short distance without operating the main engine, which can be thermal, electric or hybrid; therefore, no energy is used.
[0012] Selon des caractéristiques optionnelles du dispositif de restitution d’énergie : [0012] According to optional characteristics of the energy return device:
- la lame est contenue à l’intérieur d’un tambour et comporte une première extrémité solidaire d’une paroi interne dudit tambour et une deuxième extrémité fixée sur l’arbre d’enroulement de la lame ; - the blade is contained inside a drum and has a first end secured to an internal wall of said drum and a second end fixed to the winding shaft of the blade;
- selon une réalisation, le moyen d’entraînement de l’arbre d’enroulement de la lame comporte une boîte de vitesse ; - According to one embodiment, the drive means of the blade winding shaft comprises a gearbox;
- selon une autre réalisation, le moyen d’entraînement de l’arbre d’enroulement de la lame comporte un dispositif inverseur de mouvement couplé à un embrayage ; - According to another embodiment, the means for driving the winding shaft of the blade comprises a movement reversing device coupled to a clutch;
- le dispositif inverseur de mouvement et l’embrayage sont montés sur l’arbre d’entraînement ; - the reversing device and the clutch are mounted on the drive shaft;
- en variante, le dispositif inverseur de mouvement et l’embrayage sont montés sur l’arbre d’enroulement de la lame ; - alternatively, the movement reverser device and the clutch are mounted on the blade winding shaft;
- l’axe d’enroulement de la lame est sensiblement perpendiculaire à un axe lon gitudinal de l’arbre d’entraînement ; - le moyen de transmission de force de la lame à l’arbre d’entraînement comporte un premier pignon conique monté au niveau d’une extrémité de l’arbre d’enroulement de la lame et un deuxième pignon conique monté au niveau d’une deuxième extrémité de l’arbre d’entraînement. - The winding axis of the blade is substantially perpendicular to a longitudinal axis of the drive shaft; - the means for transmitting force from the blade to the drive shaft comprises a first bevel gear mounted at one end of the winding shaft of the blade and a second bevel gear mounted at a second end of the drive shaft.
[0013] La présente invention concerne également un véhicule comportant un train roulant selon l’invention, remarquable en ce que la lame est logée dans l’habitacle dudit véhicule, de préférence à l’avant ou à l’arrière dudit véhicule. [0013] The present invention also relates to a vehicle comprising a running gear according to the invention, remarkable in that the blade is housed in the passenger compartment of said vehicle, preferably at the front or at the rear of said vehicle.
[0014] Selon une caractéristique optionnelle du véhicule selon l’invention, la lame est logée dans l’espace roue de secours du véhicule. [0014] According to an optional feature of the vehicle according to the invention, the blade is housed in the spare wheel space of the vehicle.
[0015] D'autres caractéristiques, buts et avantages de l'invention apparaîtront à la lecture de la description détaillée qui suit pour la compréhension de laquelle on se reportera aux dessins annexés dans lesquels : Other characteristics, aims and advantages of the invention will become apparent on reading the detailed description which follows, for the understanding of which reference is made to the accompanying drawings in which:
[0016] [fig.l] est une vue isométrique d’une lame selon l’invention, montée dans un tambour. [0016] [fig.l] is an isometric view of a blade according to the invention, mounted in a drum.
[0017] [fig-2] illustre un train roulant obtenu selon un premier mode de réalisation de l’invention. [0017] [fig-2] illustrates a running gear obtained according to a first embodiment of the invention.
[0018] [fig-3] illustre un train roulant obtenu selon un deuxième mode de réalisation de l’invention. [0018] [fig-3] illustrates a running gear obtained according to a second embodiment of the invention.
[0019] [fig-4] illustre un train roulant obtenu selon un troisième mode de réalisation de l’invention. [0019] [fig-4] illustrates a running gear obtained according to a third embodiment of the invention.
[0020] [fig.5] illustre un train roulant obtenu selon un quatrième mode de réalisation de l’invention. [0020] [Fig.5] illustrates a running gear obtained according to a fourth embodiment of the invention.
[0021] Sur l’ensemble des figures, des références identiques ou analogues représentent des organes ou ensembles d’organes identiques ou analogues. [0021] In all of the figures, identical or similar references represent identical or similar organs or sets of organs.
[0022] On se réfère à la figure 1, illustrant une lame 1 élastique utilisée dans le train avant de l’invention. Referring to Figure 1, illustrating an elastic blade 1 used in the nose gear of the invention.
[0023] La lame 1 élastique peut être obtenue dans un matériau métallique. En variante, la lame 1 élastique peut être obtenue dans un matériau composite, par exemple en fibres de carbone, ceci afin de réduire la masse de la lame 1 et d’augmenter sa résistance. [0023] The elastic blade 1 can be obtained in a metallic material. As a variant, the elastic blade 1 can be obtained from a composite material, for example carbon fibers, in order to reduce the mass of the blade 1 and increase its strength.
[0024] La longueur, la largeur et l’épaisseur de la lame 1 sont calculées en fonction du couple initial que l’on souhaite fournir au véhicule équipé du train roulant de l’invention. [0024] The length, width and thickness of the blade 1 are calculated based on the initial torque that it is desired to provide to the vehicle equipped with the running gear of the invention.
[0025] La lame 1 élastique est de préférence souple et flexible, ce qui lui permet d’être enroulée autour d’un axe d’enroulement 3. De façon préférée, la lame 1 élastique est contenue à l’intérieur d’un tambour 5, par exemple cylindrique. La lame 1 élastique comporte une première extrémité la fixée sur une paroi interne 7 du tambour 5 et une deuxième extrémité lb qui est fixée sur un arbre d’enroulement 9 de la lame 1. [0025] The elastic blade 1 is preferably soft and flexible, which allows it to be wound around a winding axis 3. Preferably, the elastic blade 1 is contained inside a drum 5, for example cylindrical. The elastic blade 1 has a first end 1a fixed to an internal wall 7 of the drum 5 and a second end 1b which is fixed to a winding shaft 9 of the blade 1.
[0026] Le tambour 5 comprend une paroi intérieure cylindrique et plusieurs rainures réparties sur sa paroi intérieure. A titre d’exemple, le tambour 5 comporte dix rainures, pouvant être réparties de façon homogène. Les rainures sont agencées parallèlement à l’axe de révolution de la paroi cylindrique. L’arbre d’enroulement 9 de la lame 1 comprend lui aussi une rainure le long d’au moins une partie de l’une de ses géné ratrices. La lame 1 élastique est enchâssée à la fois dans l’une des rainures du tambour 5 et dans la rainure de l’arbre d’enroulement 9, pour la solidarisation de la lame 1 élastique au tambour 5 et à l’arbre d’enroulement 9. Les rainures pratiquées au niveau de la paroi intérieure du tambour présentent un dimensionnement sensiblement égal à celle d’une génératrice du tambour 5. The drum 5 comprises a cylindrical inner wall and several grooves distributed over its inner wall. By way of example, the drum 5 has ten grooves, which can be distributed evenly. The grooves are arranged parallel to the axis of revolution of the cylindrical wall. The winding shaft 9 of the blade 1 also comprises a groove along at least part of one of its generators. The elastic blade 1 is embedded both in one of the grooves of the drum 5 and in the groove of the winding shaft 9, for securing the elastic blade 1 to the drum 5 and to the winding shaft 9. The grooves made at the inner wall of the drum have a dimension substantially equal to that of a generatrix of the drum 5.
[0027] La lame 1 élastique est montée mobile entre une position comprimée selon laquelle elle est enroulée autour de l’axe d’enroulement 3 et une position détendue selon laquelle elle est déroulée relativement à l’axe d’enroulement 3. [0027] The elastic blade 1 is movably mounted between a compressed position in which it is wound around the winding axis 3 and a relaxed position in which it is unwound relative to the winding axis 3.
[0028] Lorsque monté dans un véhicule, le tambour 5 est solidairement du châssis du véhicule, de manière à ce qu’il soit fixe en position, tant en rotation qu’en translation. When mounted in a vehicle, the drum 5 is integral with the vehicle frame, so that it is fixed in position, both in rotation and in translation.
[0029] On se réfère à la figure 2 illustrant un train roulant 101 obtenu selon un premier mode de réalisation de l’invention. [0029] Reference is made to FIG. 2 illustrating a running gear 101 obtained according to a first embodiment of the invention.
[0030] Le train roulant 101, destiné à être solidaire d’un châssis 102 de véhicule, comporte deux arbres d’entraînement 103 et deux dispositifs 107 d’entraînement en rotation des arbres 103. Chaque arbre d’entraînement 103 reçoit au niveau d’une première extrémité 103a une roue 109. The running gear 101, intended to be integral with a vehicle frame 102, comprises two drive shafts 103 and two devices 107 for driving the shafts 103 in rotation. Each drive shaft 103 receives at the level of 'a first end 103 has a wheel 109.
[0031] L’axe d’enroulement 3 de la lame 1 est sensiblement parallèle à l’axe longitudinal de l’arbre d’entraînement 103, et de préférence sensiblement confondu avec l’axe lon gitudinal de l’arbre d’entraînement 103. The winding axis 3 of the blade 1 is substantially parallel to the longitudinal axis of the drive shaft 103, and preferably substantially coincident with the longitudinal axis of the drive shaft 103 .
[0032] Selon l’invention, le dispositif 107 d’entraînement en rotation comporte un moyen de transmission de force, agencé pour transmettre l’énergie mécanique de la lame 1 élastique aux arbres d’entraînement 103 du véhicule lorsque la lame 1 élastique passe de sa position comprimée vers sa position détendue. According to the invention, the device 107 for driving in rotation comprises a force transmission means, arranged to transmit the mechanical energy of the elastic blade 1 to the drive shafts 103 of the vehicle when the elastic blade 1 passes from its compressed position to its relaxed position.
[0033] Dans ce premier mode de réalisation, le moyen de transmission de force est constitué par l’arbre d’enroulement 9. [0033] In this first embodiment, the force transmission means is constituted by the winding shaft 9.
[0034] Chaque arbre d’entraînement 103 reçoit au niveau d’une deuxième extrémité 103b un dispositif inverseur de mouvement 111, couplé à un embrayage 113. Each drive shaft 103 receives at a second end 103b a movement reversing device 111, coupled to a clutch 113.
[0035] L’ensemble formé par le dispositif inverseur de mouvement 111 et l’embrayage 113 forme un moyen d’entraînement de l’arbre d’enroulement 9 de la lame 1 élastique. [0035] The assembly formed by the movement reversing device 111 and the clutch 113 forms a means for driving the winding shaft 9 of the elastic blade 1.
[0036] L’arbre d’enroulement 9 comporte quant à lui une première extrémité fixée à la deuxième extrémité de la lame 1 élastique, et une deuxième extrémité en prise avec le dispositif inverseur de mouvement 111. The winding shaft 9 has a first end fixed to the second end of the elastic blade 1, and a second end engaged with the movement reversing device 111.
[0037] L’embrayage 113 est piloté par un moyen de commande, par exemple un micro processeur (non représenté), programmé pour accoupler le dispositif inverseur de mouvement 111 à l’arbre d’entraînement 103 lorsque la vitesse de rotation de l’arbre d’entraînement atteint une valeur inférieure à une valeur seuil prédéterminée pro grammable et modifiable. The clutch 113 is controlled by a control means, for example a microprocessor (not shown), programmed to couple the reversing device of movement 111 to the drive shaft 103 when the speed of rotation of the drive shaft reaches a value less than a predetermined threshold value programmable and modifiable.
[0038] La valeur seuil de la vitesse de rotation de l’arbre d’entraînement en-dessous de laquelle l’embrayage accouple le dispositif inverseur de mouvement à l’arbre d’entraînement correspond à une vitesse seuil prédéterminée du véhicule. A titre d’exemple, la valeur seuil prédéterminée du véhicule peut être égale à 15 km/h. Cette valeur seuil peut être adaptée à volonté par G utilisateur. [0038] The threshold value of the speed of rotation of the drive shaft below which the clutch couples the motion reversing device to the drive shaft corresponds to a predetermined threshold speed of the vehicle. By way of example, the predetermined threshold value of the vehicle may be equal to 15 km / h. This threshold value can be adapted at will by G user.
[0039] Le fonctionnement du train roulant 101 obtenu selon le premier mode de réalisation de l’invention est à présent décrit. [0039] The operation of the running gear 101 obtained according to the first embodiment of the invention is now described.
[0040] Lorsqu’un véhicule équipé du train roulant 101 se déplace vers l’avant à une vitesse supérieure à la vitesse seuil prédéterminée, l’arbre d’entraînement 103 sur lequel est monté le dispositif selon l’invention n’entraîne pas en rotation l’arbre d’enroulement 9 de la lame 1, le dispositif inverseur de mouvement 111 étant déconnecté par l’embrayage 113. When a vehicle equipped with the running gear 101 is moving forward at a speed greater than the predetermined threshold speed, the drive shaft 103 on which the device according to the invention is mounted does not cause rotation of the winding shaft 9 of the blade 1, the movement reversing device 111 being disconnected by the clutch 113.
[0041] Lorsque le véhicule décélère, lors d’une phase de freinage de l’utilisateur, jusqu’à atteindre une vitesse inférieure à la valeur seuil prédéterminée, l’embrayage 113 accouple le dispositif inverseur de mouvement 111. When the vehicle decelerates, during a user braking phase, until it reaches a speed below the predetermined threshold value, the clutch 113 couples the motion reversing device 111.
[0042] Le dispositif inverseur de mouvement 111, ainsi activé, entraîne en rotation l’arbre d’enroulement 9 de la lame 1 élastique dans un sens inverse à celui de l’arbre d’entraînement 103. [0042] The movement reverser device 111, thus activated, rotates the winding shaft 9 of the elastic blade 1 in a direction opposite to that of the drive shaft 103.
[0043] L’arbre d’enroulement 9 de la lame 1, fixé à la lame 1, entraîne la lame 1 de sa position détendue vers sa position comprimée, atteinte lorsque la phase de freinage s’est poursuivie jusqu’à ce que le véhicule atteigne une vitesse nulle. The winding shaft 9 of the blade 1, fixed to the blade 1, drives the blade 1 from its relaxed position to its compressed position, reached when the braking phase has continued until the vehicle reaches zero speed.
[0044] La lame 1 acquiert lors de cette phase d’enroulement une énergie. [0044] The blade 1 acquires energy during this winding phase.
[0045] La lame 1 demeure dans sa position comprimée dans le tambour 5 tant que The blade 1 remains in its compressed position in the drum 5 as long as
G utilisateur maintient le frein du véhicule enclenché. G user keeps the vehicle brake engaged.
[0046] Dès lors que G utilisateur relâche le frein du véhicule, la lame 1 élastique ne se trouve plus retenue dans sa position comprimée, et se détend. When G user releases the vehicle brake, the elastic blade 1 is no longer retained in its compressed position, and relaxes.
[0047] La détente de la lame 1 restitue une énergie mécanique lorsqu’elle passe de sa position comprimée vers sa position détendue, et entraîne en rotation l’arbre d’enroulement 9 dans le sens inverse à celui précédemment obtenu pour enrouler la lame 1. The relaxation of the blade 1 restores mechanical energy when it passes from its compressed position to its relaxed position, and rotates the winding shaft 9 in the opposite direction to that previously obtained to wind the blade 1 .
[0048] L’arbre d’entraînement 103 entraîne ainsi la roue 109 sur laquelle il est monté en rotation. L’arbre 103 reçoit alors un couple moteur initial permettant de mettre en mouvement le véhicule. [0048] The drive shaft 103 thus drives the wheel 109 on which it is rotatably mounted. The shaft 103 then receives an initial engine torque allowing the vehicle to move.
[0049] Le moteur thermique et/ou électrique du véhicule n’a ainsi, pour cette phase de mise en mouvement du véhicule, pas pratiquement pas consommé d’énergie moteur, le moteur thermique n’ayant pas utilisé de carburant et le moteur électrique n’ayant pas utilisé sa batterie, ce qui représente une économie considérable d’énergie, thermique ou électrique. The heat engine and / or electric of the vehicle thus has, for this phase of setting in motion of the vehicle, practically no engine energy consumed, the heat engine not having used fuel and the electric motor not having used its battery, which represents a considerable saving of energy, thermal or electric.
[0050] Lorsque la lame 1 élastique a terminé sa course de détente et a atteint sa position to talement détendue, l’embrayage déconnecte le dispositif inverseur, et le moteur thermique et/ou électrique prend le relais. When the elastic blade 1 has finished its expansion stroke and has reached its fully relaxed position, the clutch disconnects the reversing device, and the heat engine and / or electric takes over.
[0051] Le démarrage du moteur thermique et/ou électrique est piloté électroniquement par un microprocesseur. The starting of the heat engine and / or electric is controlled electronically by a microprocessor.
[0052] On se réfère à la figure 3 illustrant un train roulant 201 obtenu selon un deuxième mode de réalisation de l’invention. Referring to Figure 3 illustrating a running gear 201 obtained according to a second embodiment of the invention.
[0053] Le train roulant 201 comporte deux arbres d’entraînement 203, 205, chacun recevant au niveau d’une première extrémité une roue 209. Le train roulant 201 comporte un dispositif 207 d’entraînement en rotation de l’arbre 203. The running gear 201 comprises two drive shafts 203, 205, each receiving at a first end a wheel 209. The running gear 201 comprises a device 207 for driving the shaft 203 in rotation.
[0054] L’axe d’enroulement 3 de la lame 1 est sensiblement perpendiculaire à l’axe lon gitudinal de l’arbre 203. [0054] The winding axis 3 of the blade 1 is substantially perpendicular to the longitudinal axis of the shaft 203.
[0055] Dans ce deuxième mode de réalisation, le moyen de transmission de force de la lame 1 élastique à l’arbre d’entraînement du train roulant 201 comporte un premier pignon conique 202 monté au niveau d’une extrémité de l’arbre d’enroulement 9 de la lame 1 et un deuxième pignon conique 204 monté au niveau de l’extrémité de l’arbre 203. In this second embodiment, the force transmission means of the elastic blade 1 to the drive shaft of the running gear 201 comprises a first bevel gear 202 mounted at one end of the shaft d winding 9 of the blade 1 and a second bevel gear 204 mounted at the end of the shaft 203.
[0056] Un troisième pignon 206 est monté sur l’arbre d’entraînement 205 par l’intermédiaire d’un roulement à billes 208. La rotation du premier pignon 202 entraîne en rotation le deuxième pignon 204 et le troisième pignon 206. [0056] A third pinion 206 is mounted on the drive shaft 205 through a ball bearing 208. The rotation of the first pinion 202 rotates the second pinion 204 and the third pinion 206.
[0057] Selon une variante non représentée, le moyen de transmission de force de la lame 1 élastique à l’arbre d’entraînement du train roulant 201 comporte un ensemble roue et vis sans fin, ou un cardan, ou une courroie. En fait, tout moyen connu de l’homme du métier pour renvoyer un mouvement de rotation entre deux axes non parallèles peut être utilisé dans le cadre de la présente invention. [0057] According to a variant not shown, the means for transmitting force from the elastic blade 1 to the drive shaft of the running gear 201 comprises a wheel and worm assembly, or a cardan shaft, or a belt. In fact, any means known to those skilled in the art for returning a rotational movement between two non-parallel axes can be used within the framework of the present invention.
[0058] L’arbre 203 comporte un premier demi-arbre 203a qui reçoit au niveau d’une première extrémité la roue 209 et au niveau d’une deuxième extrémité un embrayage 213, couplé à un dispositif inverseur de mouvement 211. The shaft 203 comprises a first half-shaft 203a which receives at a first end the wheel 209 and at a second end a clutch 213, coupled to a movement reversing device 211.
[0059] L’arbre 203 comporte un deuxième demi-arbre 203b qui reçoit au niveau d’une première extrémité le dispositif inverseur de mouvement 211 et au niveau d’une deuxième extrémité le deuxième pignon conique 204 du moyen de transmission de force. The shaft 203 comprises a second half-shaft 203b which receives at a first end the movement reversing device 211 and at a second end the second bevel gear 204 of the force transmission means.
[0060] L’ensemble formé par le dispositif inverseur de mouvement 211 et l’embrayage 213 définit le moyen d’entraînement de l’arbre d’enroulement 9 de la lame 1 élastique. L’embrayage 213 est piloté de manière identique à l’embrayage 113 du premier mode de réalisation. [0061] Le fonctionnement du train roulant 201 est à présent décrit. Lorsqu’un véhicule équipé du train roulant 201 se déplace vers l’avant à une vitesse supérieure à la vitesse seuil prédéterminée, le demi-arbre 203b de l’arbre 203, sur lequel est monté le deuxième pignon conique 204, n’entraîne pas en rotation l’arbre d’enroulement 9, le dispositif inverseur de mouvement 211 étant déconnecté par l’embrayage 213. Lorsque le véhicule décélère, lors d’une phase de freinage de l’utilisateur, jusqu’à atteindre une vitesse inférieure à la valeur seuil prédéterminée, l’embrayage 213 accouple le dispositif inverseur de mouvement 211. The assembly formed by the movement reversing device 211 and the clutch 213 defines the drive means of the winding shaft 9 of the elastic blade 1. The clutch 213 is controlled identically to the clutch 113 of the first embodiment. [0061] The operation of the running gear 201 is now described. When a vehicle equipped with the running gear 201 moves forward at a speed greater than the predetermined threshold speed, the half-shaft 203b of the shaft 203, on which the second bevel gear 204 is mounted, does not drive in rotation the winding shaft 9, the movement reversing device 211 being disconnected by the clutch 213. When the vehicle decelerates, during a braking phase of the user, until reaching a speed lower than the predetermined threshold value, the clutch 213 couples the movement reversing device 211.
[0062] Le dispositif inverseur de mouvement 211, ainsi activé, entraîne en rotation le demi- arbre 203b droit dans un sens inverse à celui du demi-arbre 203a. The movement reversing device 211, thus activated, drives the right half-shaft 203b in rotation in a direction opposite to that of the half-shaft 203a.
[0063] Le deuxième pignon conique 204 du demi-arbre 203b entraîne alors en rotation le premier pignon 202 de l’arbre d’enroulement 9 de la lame 1. The second bevel gear 204 of the half-shaft 203b then rotates the first gear 202 of the winding shaft 9 of the blade 1.
[0064] L’arbre d’enroulement de la lame 1, fixé à une extrémité de la lame 1, entraîne la lame 1 de sa position détendue vers sa position comprimée, atteinte lorsque la phase de freinage s’est poursuivie jusqu’à ce que le véhicule atteigne une vitesse nulle. The winding shaft of the blade 1, fixed to one end of the blade 1, drives the blade 1 from its relaxed position to its compressed position, reached when the braking phase has continued until that the vehicle reaches zero speed.
[0065] La lame 1 acquiert lors de cette phase d’enroulement une énergie. La lame 1 demeure dans sa position comprimée dans le tambour tant que l’utilisateur maintient le frein du véhicule enclenché. [0065] The blade 1 acquires energy during this winding phase. Blade 1 remains in its compressed position in the drum as long as the user keeps the vehicle brake engaged.
[0066] Dès lors que l’utilisateur relâche le frein du véhicule, la lame 1 élastique ne se trouve plus retenue dans sa position comprimée et se détend. [0066] As soon as the user releases the vehicle brake, the elastic blade 1 is no longer retained in its compressed position and relaxes.
[0067] La détente de la lame 1 restitue une énergie mécanique lorsqu’elle passe de sa position comprimée vers sa position détendue, et entraîne en rotation l’arbre d’enroulement 9 dans le sens inverse à celui précédemment obtenu pour enrouler la lame 1. The relaxation of the blade 1 restores mechanical energy when it passes from its compressed position to its relaxed position, and rotates the winding shaft 9 in the opposite direction to that previously obtained for winding the blade 1 .
[0068] Le premier pignon conique 202, monté en extrémité de l’arbre d’enroulement 9 et en prise avec le deuxième pignon conique 204 et avec le troisième pignon conique 206, entraîne ainsi en rotation le demi-arbre 203b, qui entraîne en rotation le demi-arbre 203a. L’arbre 205 n’est quant à lui pas entraîné en rotation lors de la rotation du troisième pignon 206, en raison de son montage sur l’arbre 205 via le roulement à billes 208. The first bevel gear 202, mounted at the end of the winding shaft 9 and in engagement with the second bevel gear 204 and with the third bevel gear 206, thus drives the half-shaft 203b in rotation, which drives in rotation of the half-shaft 203a. The shaft 205, on the other hand, is not rotated during the rotation of the third gear 206, due to its mounting on the shaft 205 via the ball bearing 208.
[0069] Le demi-arbre 203a reçoit alors un couple moteur initial permettant d’entraîner en rotation la roue 209 sur laquelle il est monté, mettant alors le véhicule en mouvement. [0069] The half-shaft 203a then receives an initial engine torque making it possible to drive the wheel 209 on which it is mounted in rotation, then setting the vehicle in motion.
[0070] Comme c’est le cas pour le premier mode de réalisation, le moteur thermique et/ou électrique du véhicule n’a ainsi, pour cette phase de mise en mouvement du véhicule, pratiquement pas consommé d’énergie moteur, le moteur thermique n’ayant pas utilisé de carburant et le moteur électrique n’ayant pas utilisé sa batterie, ce qui représente une économie considérable d’énergie, thermique ou électrique. Lorsque la lame 1 élastique a terminé sa course de détente et a atteint sa position totalement détendue, le moteur thermique et/ou électrique prend le relais. Le démarrage du moteur thermique et/ou électrique est piloté électroniquement par un microprocesseur. As is the case for the first embodiment, the thermal and / or electric engine of the vehicle thus has, for this phase of setting the vehicle in motion, practically no engine energy consumed, the engine thermal unit not having used fuel and the electric motor not having used its battery, which represents a considerable saving in energy, thermal or electric. When the elastic blade 1 has finished its expansion stroke and has reached its fully relaxed position, the thermal and / or electric motor takes over. The starting of the heat engine and / or electric is controlled electronically by a microprocessor.
[0071] On se réfère à la figure 4 illustrant un train roulant 301 obtenu selon un troisième mode de réalisation de l’invention. Referring to Figure 4 illustrating a running gear 301 obtained according to a third embodiment of the invention.
[0072] Le train roulant 301 comporte deux arbres d’entraînement 303, 305, chacun recevant au niveau d’une première extrémité une roue 309. Le train roulant 301 comporte un dispositif 307 d’entraînement en rotation de l’arbre 303. The running gear 301 comprises two drive shafts 303, 305, each receiving at a first end a wheel 309. The running gear 301 comprises a device 307 for driving the shaft 303 in rotation.
[0073] L’axe d’enroulement 3 de la lame 1 est sensiblement perpendiculaire à l’axe lon gitudinal de l’arbre d’entraînement 303. [0073] The winding axis 3 of the blade 1 is substantially perpendicular to the longitudinal axis of the drive shaft 303.
[0074] Comme pour le deuxième mode de réalisation, le moyen de transmission de force de la lame 1 élastique à l’arbre d’entraînement du train roulant comporte un premier pignon conique 302 monté au niveau d’une extrémité de l’arbre d’enroulement 9 de la lame 1 et un deuxième pignon conique 304 monté au niveau d’une deuxième extrémité de l’arbre 303. As for the second embodiment, the force transmission means of the elastic blade 1 to the drive shaft of the running gear comprises a first bevel gear 302 mounted at one end of the shaft d winding 9 of the blade 1 and a second bevel gear 304 mounted at a second end of the shaft 303.
[0075] Un troisième pignon 306 est monté sur l’arbre d’entraînement 305 par l’intermédiaire d’un roulement à billes 308.La rotation du premier pignon 302 entraîne en rotation le deuxième pignon 304 et le troisième pignon 306. A third pinion 306 is mounted on the drive shaft 305 through a ball bearing 308. The rotation of the first pinion 302 rotates the second pinion 304 and the third pinion 306.
[0076] Selon une variante non représentée, le moyen de transmission de force de la lame 1 élastique à l’arbre d’entraînement du train roulant 301 comporte un ensemble roue et vis sans fin, ou un cardan, ou une courroie. En fait, tout moyen connu de l’homme du métier pour renvoyer un mouvement de rotation entre deux axes non parallèles peut être utilisé dans le cadre de la présente invention. [0076] According to a variant not shown, the means for transmitting force from the elastic blade 1 to the drive shaft of the running gear 301 comprises a wheel and worm assembly, or a cardan shaft, or a belt. In fact, any means known to those skilled in the art for returning a rotational movement between two non-parallel axes can be used within the framework of the present invention.
[0077] Le train roulant 301 comporte également un dispositif inverseur de mouvement 311, couplé à un embrayage 313. The running gear 301 also includes a movement reversing device 311, coupled to a clutch 313.
[0078] Cette fois-ci, le dispositif inverseur de mouvement 311 couplé à l’embrayage 313 est monté sur l’arbre d’enroulement 9 de la lame 1. [0078] This time, the motion reverser device 311 coupled to the clutch 313 is mounted on the winding shaft 9 of the blade 1.
[0079] L’ensemble formé par le dispositif inverseur de mouvement 311 et l’embrayage 313 définit le moyen d’entraînement de l’arbre d’enroulement 9 de la lame 1 élastique. L’embrayage 313 est piloté de manière identique aux embrayages 113 et 213 des premier et deuxième modes de réalisation. The assembly formed by the movement reversing device 311 and the clutch 313 defines the drive means of the winding shaft 9 of the elastic blade 1. The clutch 313 is operated identically to the clutches 113 and 213 of the first and second embodiments.
[0080] Le fonctionnement du train roulant 301 est à présent décrit. Lorsqu’un véhicule équipé du train roulant 301 se déplace vers l’avant à une vitesse supérieure à la vitesse seuil prédéterminée, l’arbre d’entraînement 303 sur lequel est monté le deuxième pignon conique 304 n’entraîne pas en rotation l’arbre d’enroulement 9 de la lame 1, le dispositif inverseur de mouvement 311 étant déconnecté par l’embrayage 313. Lorsque le véhicule décélère lors d’une phase de freinage de l’utilisateur, jusqu’à atteindre une vitesse inférieure à la valeur seuil prédéterminée, l’embrayage 313 accouple le dispositif inverseur de mouvement 311. [0081] Le dispositif inverseur de mouvement 311, ainsi activé, entraîne en rotation l’arbre d’enroulement 9 de la lame 1. L’arbre d’enroulement de la lame 1, fixé à une extrémité de la lame 1, entraîne la lame 1 de sa position détendue vers sa position comprimée, atteinte lorsque la phase de freinage s’est poursuivie jusqu’à ce que le véhicule atteigne une vitesse nulle. [0080] The operation of the running gear 301 is now described. When a vehicle equipped with the running gear 301 moves forward at a speed greater than the predetermined threshold speed, the drive shaft 303 on which the second bevel gear 304 is mounted does not cause the shaft to rotate. winding 9 of the blade 1, the movement reversing device 311 being disconnected by the clutch 313. When the vehicle decelerates during a user braking phase, until reaching a speed below the threshold value predetermined, the clutch 313 couples the movement reversing device 311. The movement reversing device 311, thus activated, drives in rotation the winding shaft 9 of the blade 1. The winding shaft of the blade 1, attached to one end of the blade 1, drives the blade 1 from its relaxed position to its compressed position, reached when the braking phase has continued until the vehicle reaches zero speed.
[0082] La lame 1 acquiert lors de cette phase d’enroulement une énergie. La lame 1 demeure dans sa position comprimée dans le tambour tant que G utilisateur maintient le frein du véhicule enclenché. [0082] The blade 1 acquires energy during this winding phase. The blade 1 remains in its compressed position in the drum as long as the user G maintains the vehicle brake engaged.
[0083] Dès lors que G utilisateur relâche le frein du véhicule, la lame 1 élastique ne se trouve plus retenue dans sa position comprimée et se détend. Once G user releases the vehicle brake, the elastic blade 1 is no longer retained in its compressed position and relaxes.
[0084] La détente de la lame 1 élastique restitue une énergie mécanique et entraîne en rotation l’arbre d’enroulement 9 dans le sens inverse à celui précédemment obtenu pour enrouler la lame 1. Le premier pignon conique 302, monté en extrémité de l’arbre d’enroulement 9 et en prise avec le deuxième pignon conique 304 monté sur l’arbre 303, entraîne l’arbre 303 en rotation. L’arbre 305 n’est quant à lui pas entraîné en rotation lors de la rotation du troisième pignon 306, en raison de son montage sur l’arbre 305 via le roulement à billes 308. L’arbre d’entraînement 303 reçoit alors un couple moteur initial qui permet d’entraîner en rotation la roue 309 sur laquelle il est monté, mettant alors le véhicule en mouvement. The relaxation of the elastic blade 1 restores mechanical energy and drives the winding shaft 9 in rotation in the opposite direction to that previously obtained for winding the blade 1. The first bevel gear 302, mounted at the end of the The winding shaft 9 and in engagement with the second bevel gear 304 mounted on the shaft 303, drives the shaft 303 in rotation. The shaft 305 is for its part not rotated during the rotation of the third pinion 306, due to its mounting on the shaft 305 via the ball bearing 308. The drive shaft 303 then receives a initial motor torque which makes it possible to drive the wheel 309 on which it is mounted in rotation, then setting the vehicle in motion.
[0085] Comme c’est le cas pour les modes de réalisation précédents, le moteur thermique et/ ou électrique du véhicule n’a ainsi, pour cette phase de mise en mouvement du véhicule, pratiquement pas consommé d’énergie moteur, le moteur thermique n’ayant pas utilisé de carburant et le moteur électrique n’ayant pas utilisé sa batterie, ce qui re présente une économie considérable d’énergie, thermique ou électrique. Lorsque la lame 1 élastique a terminé sa course de détente et a atteint sa position totalement détendue, le moteur thermique et/ou électrique prend le relais. Le démarrage du moteur thermique et/ou électrique est piloté électroniquement par un microprocesseur. As is the case with the previous embodiments, the thermal and / or electric engine of the vehicle thus has, for this phase of setting the vehicle in motion, practically no engine energy consumed, the engine thermal having not used fuel and the electric motor not having used its battery, which represents a considerable saving of energy, thermal or electric. When the elastic blade 1 has finished its expansion stroke and has reached its fully relaxed position, the heat engine and / or electric takes over. The starting of the heat engine and / or electric is controlled electronically by a microprocessor.
[0086] On se réfère à la figure 5 illustrant un train roulant 401 obtenu selon un quatrième mode de réalisation de l’invention. Referring to Figure 5 illustrating a running gear 401 obtained according to a fourth embodiment of the invention.
[0087] Le train roulant 401 comporte deux arbres d’entraînement 403, 405, chacun recevant au niveau d’une première extrémité une roue 409. Le train roulant 401 comporte un dispositif 407 d’entraînement en rotation de l’arbre 403. The running gear 401 comprises two drive shafts 403, 405, each receiving at a first end a wheel 409. The running gear 401 includes a device 407 for driving the shaft 403 in rotation.
[0088] L’axe d’enroulement 3 de la lame 1 est sensiblement perpendiculaire à l’axe lon gitudinal de l’arbre 403. The winding axis 3 of the blade 1 is substantially perpendicular to the longitudinal axis of the shaft 403.
[0089] Comme pour les deuxième et troisième modes de réalisation, le moyen de transmission de force de la lame 1 élastique à l’arbre d’entraînement comporte un premier pignon conique 402 monté au niveau d’une extrémité de l’arbre d’enroulement 9 de la lame 1 et un deuxième pignon conique 404 monté au niveau d’une deuxième extrémité de l’arbre 403. As for the second and third embodiments, the force transmission means of the elastic blade 1 to the drive shaft comprises a first bevel gear 402 mounted at one end of the shaft. winding 9 of the blade 1 and a second bevel gear 404 mounted at a second end of shaft 403.
[0090] Un troisième pignon 406 est monté sur l’arbre d’entraînement 405 par l’intermédiaire d’un roulement à billes 408. La rotation du premier pignon 402 entraîne en rotation le deuxième pignon 404 et le troisième pignon 406. A third pinion 406 is mounted on the drive shaft 405 through a ball bearing 408. The rotation of the first pinion 402 rotates the second pinion 404 and the third pinion 406.
[0091] Selon une variante non représentée, le moyen de transmission de force de la lame 1 élastique à l’arbre d’entraînement du train roulant 401 comporte un ensemble roue et vis sans fin, ou un cardan, ou une courroie. En fait, tout moyen connu de l’homme du métier pour renvoyer un mouvement de rotation entre deux axes non parallèles peut être utilisé dans le cadre de la présente invention. According to a variant not shown, the means for transmitting force from the elastic blade 1 to the drive shaft of the running gear 401 comprises a wheel and worm assembly, or a cardan, or a belt. In fact, any means known to those skilled in the art for returning a rotational movement between two non-parallel axes can be used within the framework of the present invention.
[0092] Dans ce quatrième mode de réalisation, le train roulant 401 ne comporte ni dispositif inverseur de mouvement ni embrayage. In this fourth embodiment, the running gear 401 has neither a movement reversing device nor a clutch.
[0093] L’entraînement en rotation de l’arbre d’enroulement 9 de la lame 1 est obtenu grâce à une boîte de vitesse 415 à trois positions, neutre (« neutral » en anglais), marche avant (« drive » en anglais) et marche arrière (« reverse » en anglais). La boîte de vitesse 415 est montée sur l’arbre d’enroulement 9 de la lame 1 élastique. The drive in rotation of the winding shaft 9 of the blade 1 is obtained through a gearbox 415 with three positions, neutral ("neutral" in English), forward ("drive" in English ) and reverse. The gearbox 415 is mounted on the winding shaft 9 of the elastic blade 1.
[0094] La boîte de vitesse peut être pilotée mécaniquement. De façon préférée, la boîte de vitesse est pilotée électroniquement, grâce à un moyen de commande, par exemple un microprocesseur, programmé pour positionner la boîte de vitesse en mode « MARCHE ARRIERE » lorsque la vitesse de rotation de l’arbre 403 atteint une valeur inférieure à une valeur seuil prédéterminée. La valeur seuil de la vitesse de rotation de l’arbre d’entraînement en-dessous de laquelle la boîte de vitesse 403 est positionnée en mode « MARCHE ARRIERE » correspond à une vitesse seuil prédéterminée du véhicule. A titre d’exemple, la valeur seuil prédéterminée du véhicule est égale à 15 km/h. Comme dit précédemment, cette valeur seuil peut être adaptée à volonté par l’utilisateur. The gearbox can be controlled mechanically. Preferably, the gearbox is electronically controlled, thanks to a control means, for example a microprocessor, programmed to position the gearbox in "REVERSE" mode when the speed of rotation of the shaft 403 reaches a value. less than a predetermined threshold value. The threshold value of the speed of rotation of the drive shaft below which the gearbox 403 is positioned in "REVERSE" mode corresponds to a predetermined threshold speed of the vehicle. For example, the predetermined threshold value of the vehicle is equal to 15 km / h. As said before, this threshold value can be adapted at will by the user.
[0095] Le fonctionnement du train roulant 401 selon le quatrième mode de réalisation de l’invention est à présent décrit. The operation of the running gear 401 according to the fourth embodiment of the invention is now described.
[0096] Lorsqu’un véhicule équipé du train roulant 401 se déplace vers l’avant à une vitesse supérieure à la vitesse seuil prédéterminée, le moyen de commande de la boîte de vitesse 415 positionne la boîte de vitesse en position « NEUTRE », position selon laquelle l’arbre d’entraînement 403 sur lequel est monté le deuxième pignon 404 n’entraîne pas en rotation l’arbre d’enroulement 9 de la lame 1. When a vehicle equipped with the running gear 401 moves forward at a speed greater than the predetermined threshold speed, the gearbox control means 415 positions the gearbox in the "NEUTRAL" position, position according to which the drive shaft 403 on which the second pinion 404 is mounted does not rotate the winding shaft 9 of the blade 1.
[0097] Lorsque le véhicule décélère lors d’une phase de freinage de l’utilisateur, jusqu’à atteindre une vitesse inférieure à la valeur seuil prédéterminée, le moyen de commande de la boîte de vitesse fait passer la boîte de vitesse depuis sa position « NEUTRE » vers sa position « MARCHE ARRIERE ». L’arbre 403 entraîne alors l’arbre d’enroulement 9 de la lame 1 grâce au deuxième pignon 404 monté sur l’arbre 403 qui engrène le premier pignon 402 monté sur l’arbre d’enroulement 9 de la lame 1. La boîte de vitesse 415, en position « MARCHE ARRIERE », inverse le sens de rotation de l’arbre d’enroulement 9. When the vehicle decelerates during a braking phase of the user, until it reaches a speed below the predetermined threshold value, the gearbox control means causes the gearbox to switch from its position "NEUTRAL" to its "REVERSE" position. The shaft 403 then drives the winding shaft 9 of the blade 1 thanks to the second pinion 404 mounted on the shaft 403 which meshes with the first pinion 402 mounted on the winding shaft 9 of the blade 1. The box speed 415, in the "REVERSE" position, reverses the direction of rotation winding shaft 9.
[0098] L’arbre d’enroulement 403 de la lame 1, fixé à une extrémité de la lame 1, entraîne la lame 1 de sa position détendue vers sa position comprimée, atteinte lorsque la phase de freinage s’est poursuivie jusqu’à ce que le véhicule atteigne une vitesse nulle. The winding shaft 403 of the blade 1, fixed to one end of the blade 1, drives the blade 1 from its relaxed position to its compressed position, reached when the braking phase has continued until that the vehicle reaches zero speed.
[0099] La lame 1 acquiert lors de cette phase d’enroulement une énergie. La lame 1 demeure dans sa position comprimée dans le tambour tant que G utilisateur maintient le frein du véhicule enclenché. [0099] The blade 1 acquires energy during this winding phase. The blade 1 remains in its compressed position in the drum as long as the user G maintains the vehicle brake engaged.
[0100] Dès lors que l’utilisateur relâche le frein du véhicule, le moyen de commande de la boîte de vitesse 415 actionne la position « MARCHE AVANT ». La lame 1 élastique ne se trouve plus retenue dans sa position comprimée et se détend. [0100] As soon as the user releases the vehicle brake, the gearbox control means 415 actuates the "FORWARD" position. The elastic blade 1 is no longer retained in its compressed position and relaxes.
[0101] La détente de la lame 1 élastique restitue une énergie mécanique et entraîne en rotation l’arbre d’enroulement 9 dans le sens inverse à celui précédemment obtenu pour enrouler la lame 1, en raison de la position « MARCHE AVANT » de la boîte de vitesse qui est enclenchée. Le premier pignon conique 402, monté en extrémité de l’arbre d’enroulement 9 et en prise avec le deuxième pignon conique 404 monté sur l’arbre 403, entraîne l’arbre 403 en rotation. L’arbre 405 n’est quant à lui pas entraîné en rotation lors de la rotation du troisième pignon 406, en raison de son montage sur l’arbre 405 via le roulement à billes 408. [0101] The relaxation of the elastic blade 1 restores mechanical energy and drives the winding shaft 9 in rotation in the opposite direction to that obtained previously for winding the blade 1, due to the "FORWARD" position of the gearbox which is engaged. The first bevel gear 402, mounted at the end of the winding shaft 9 and in engagement with the second bevel gear 404 mounted on the shaft 403, drives the shaft 403 in rotation. The shaft 405, on the other hand, is not rotated during the rotation of the third gear 406, due to its mounting on the shaft 405 via the ball bearing 408.
[0102] L’arbre d’entraînement 403 reçoit alors un couple moteur initial qui permet d’entraîner en rotation la roue 409 sur laquelle il est monté, mettant alors le véhicule en mouvement. [0102] The drive shaft 403 then receives an initial motor torque which allows the wheel 409 to be rotated on which it is mounted, thereby setting the vehicle in motion.
[0103] Comme c’est le cas pour les modes de réalisation précédents, le moteur thermique et/ ou électrique du véhicule n’a ainsi, pour cette phase de mise en mouvement du véhicule, pratiquement pas consommé d’énergie moteur, le moteur thermique n’ayant pas utilisé de carburant et le moteur électrique n’ayant pas utilisé sa batterie, ce qui re présente une économie considérable d’énergie, thermique ou électrique. Lorsque la lame 1 élastique a terminé sa course de détente et a atteint sa position totalement détendue, la boîte de vitesse passe de sa position « MARCHE AVANT » vers sa position « NEUTRE », et le moteur thermique et/ou électrique prend le relais. Le démarrage du moteur thermique et/ou électrique est piloté électroniquement par un mi croprocesseur. As is the case for the previous embodiments, the thermal and / or electric engine of the vehicle thus has, for this phase of setting the vehicle in motion, practically no engine energy, the engine thermal having not used fuel and the electric motor not having used its battery, which represents a considerable saving of energy, thermal or electric. When the elastic blade 1 has finished its expansion stroke and has reached its fully relaxed position, the gearbox shifts from its "FORWARD" position to its "NEUTRAL" position, and the heat engine and / or electric motor takes over. The starting of the thermal and / or electric engine is controlled electronically by a microprocessor.
[0104] Selon une disposition commune aux deuxième, troisième et quatrième modes de réa lisation, le tambour 5 peut avantageusement être logé dans l’habitacle du véhicule. Aussi, lorsque le train roulant 201, 301, 401 constitue un pont arrière du véhicule, la lame 1 peut par exemple être avantageusement logée dans l’espace roue de secours, gé néralement dédié au stockage de la roue de secours. [0104] According to an arrangement common to the second, third and fourth embodiments, the drum 5 can advantageously be housed in the passenger compartment of the vehicle. Also, when the running gear 201, 301, 401 constitutes a rear axle of the vehicle, the blade 1 can for example be advantageously housed in the spare wheel space, generally dedicated to the storage of the spare wheel.
[0105] Le train roulant 101, 201, 301, 401 selon l’invention constitue de façon préféré un pont arrière de véhicule. Il est toutefois également envisagé de monter le train roulant de l’invention à l’avant du véhicule, définissant dans ce cas le train avant du véhicule. Aussi, le train roulant de l’invention est préférentiellement utilisé lorsque le véhicule est du type à traction avant. Toutefois, il peut bien entendu également être utilisé lorsque le véhicule est à propulsion ou à transmission intégrale. [0105] The running gear 101, 201, 301, 401 according to the invention preferably constitutes a vehicle rear axle. However, it is also planned to fit the running gear of the invention at the front of the vehicle, in this case defining the front axle of the vehicle. Also, the running gear of the invention is preferably used when the vehicle is of the front-wheel drive type. However, it can of course also be used when the vehicle is propulsion or all-wheel drive.
[0106] Selon une caractéristique commune à l’ensemble des modes de réalisation de la présente invention, le dispositif d’entraînement en rotation de l’arbre d’entraînement peut être activé et désactivé à volonté à la demande de l’utilisateur. Par exemple, lorsqu’un utilisateur souhaite stationner son véhicule, il convient de désactiver le dispositif. [0106] According to a characteristic common to all of the embodiments of the present invention, the device for driving the drive shaft in rotation can be activated and deactivated at will at the request of the user. For example, when a user wishes to park his vehicle, the device should be deactivated.
[0107] Selon une autre caractéristique avantageuse de la présente invention, le fait de prévoir plusieurs rainures dans la paroi interne du tambour permet, d’une part, de maintenir la lame élastique en position dans le tambour et, d’autre part, d’éviter une rupture de la lame lorsque l’arbre d’enroulement de la lame est entraîné en rotation. En effet, lors de rotation de l’arbre d’enroulement, l’extrémité de la lame peut ainsi être enchâssée tour à tour à l’intérieur des différentes rainures réparties sur la paroi in térieure du tambour. On augmente ainsi la sécurité du dispositif de l’invention. [0107] According to another advantageous characteristic of the present invention, the fact of providing several grooves in the internal wall of the drum makes it possible, on the one hand, to maintain the elastic blade in position in the drum and, on the other hand, to 'Avoid breaking the blade when the blade winding shaft is rotated. Indeed, during rotation of the winding shaft, the end of the blade can thus be embedded in turn within the various grooves distributed on the inner wall of the drum. This increases the security of the device of the invention.
[0108] Grâce à la présente invention, un véhicule équipé du train roulant de l’invention économise largement son énergie principale à chaque fois que le véhicule est mis en mouvement depuis un état statique initial. [0108] Thanks to the present invention, a vehicle equipped with the undercarriage of the invention greatly saves its main energy each time the vehicle is set in motion from an initial static state.
[0109] La présente invention permet de conférer une vitesse initiale à un véhicule depuis son état arrêté vers un état selon lequel il se déplace, sans consommation d’énergie principale (batterie, carburant). La présente invention est désignée par l’acronyme anglais « ISS » pour « Initial Speed System ». [0109] The present invention makes it possible to impart an initial speed to a vehicle from its stopped state to a state in which it is moving, without consumption of main energy (battery, fuel). The present invention is referred to by the acronym "ISS" for "Initial Speed System".
[0110] Comme il va de soi, la présente invention ne se limite pas aux seules formes de réa lisation de ce train roulant et de ce véhicule, décrites ci-dessus uniquement à titre d'exemples illustratifs, mais elle embrasse au contraire toutes les variantes faisant in tervenir les équivalents techniques des moyens décrits ainsi que leurs combinaisons si celles-ci entrent dans le cadre de l’invention. [0110] As goes without saying, the present invention is not limited to the sole embodiments of this running gear and of this vehicle, described above solely by way of illustrative examples, but on the contrary it embraces all variants involving the technical equivalents of the means described as well as their combinations if these fall within the scope of the invention.

Claims

Revendications Claims
[Revendication 1] Train roulant (101, 201, 301, 401) pour véhicule, comportant un arbre d’entraînement (103, 203, 303, 403) de roues (109, 209, 309, 409) et un dispositif (107, 207, 307, 407) d’entraînement en rotation dudit arbre d’entraînement (103, 203, 303, 403), ledit train roulant (101, 201, 301, 401) étant caractérisé en ce que ledit dispositif (107, 207, 307, 407) comporte : [Claim 1] Undercarriage (101, 201, 301, 401) for a vehicle, comprising a drive shaft (103, 203, 303, 403) of wheels (109, 209, 309, 409) and a device (107, 207, 307, 407) for driving said drive shaft (103, 203, 303, 403) in rotation, said running gear (101, 201, 301, 401) being characterized in that said device (107, 207, 307, 407) includes:
- une lame (1) élastique, mobile entre une position comprimée selon laquelle ladite lame (1) est enroulée autour d’un axe d’enroulement (3) et une position détendue selon laquelle ladite lame (1) est déroulée rela tivement audit axe d’enroulement (3), ladite lame (1) étant apte à acquérir une énergie lorsqu’elle passe de sa position détendue vers sa position comprimée et à restituer une énergie mécanique lorsqu’elle passe de sa position comprimée vers sa position détendue ; - an elastic blade (1), movable between a compressed position according to which said blade (1) is wound around a winding axis (3) and a relaxed position according to which said blade (1) is unwound relative to said axis winding (3), said blade (1) being able to acquire energy when it passes from its relaxed position to its compressed position and to restore mechanical energy when it passes from its compressed position to its relaxed position;
- un arbre d’enroulement (9) de ladite lame (1), agencé pour entraîner ladite lame (1) depuis sa position détendue vers sa position comprimée ;- a winding shaft (9) of said blade (1), arranged to drive said blade (1) from its relaxed position to its compressed position;
- un moyen d’entraînement de l’arbre d’enroulement (9), conçu pour entraîner en rotation ledit arbre d’enroulement (9) de la lame (1) lorsque la vitesse de rotation de l’arbre d’entraînement (103, 203, 303, 403) atteint une valeur inférieure à une valeur seuil prédéterminée ; un moyen de transmission de force de la lame (1) à l’arbre d’entraînement (103, 203, 303, 403), agencé pour transmettre l’énergie mécanique de la lame (1) audit arbre d’entraînement lorsque la lame (1) passe de sa position comprimée vers sa position détendue. - means for driving the winding shaft (9), designed to drive said winding shaft (9) of the blade (1) in rotation when the speed of rotation of the drive shaft (103) , 203, 303, 403) reaches a value lower than a predetermined threshold value; means for transmitting force from the blade (1) to the drive shaft (103, 203, 303, 403), arranged to transmit mechanical energy from the blade (1) to said drive shaft when the blade (1) changes from its compressed position to its relaxed position.
[Revendication 2] Train roulant (101, 201, 301, 401) selon la revendication 1, caractérisé en ce que la lame (1) est contenue à l’intérieur d’un tambour (5) et en ce qu’elle comporte une première extrémité (la) solidaire d’une paroi interne (7) dudit tambour (5) et une deuxième extrémité (lb) fixée sur l’arbre d’enroulement (9) de la lame (1). [Claim 2] Undercarriage (101, 201, 301, 401) according to claim 1, characterized in that the blade (1) is contained inside a drum (5) and in that it comprises a first end (la) integral with an internal wall (7) of said drum (5) and a second end (lb) fixed to the winding shaft (9) of the blade (1).
[Revendication 3] Train roulant (401) selon l’une des revendications 1 ou 2, caractérisé en ce que le moyen d’entraînement de l’arbre d’enroulement (9) de la lame (1) comporte une boîte de vitesse (415). [Claim 3] Running gear (401) according to one of claims 1 or 2, characterized in that the drive means of the winding shaft (9) of the blade (1) comprises a gearbox ( 415).
[Revendication 4] Train roulant (101, 201, 301) selon l’une des revendications 1 ou 2, ca ractérisé en ce que le moyen d’entraînement de l’arbre d’enroulement (9) de la lame (1) comporte un dispositif inverseur de mouvement (111, 211, 311) couplé à un embrayage (113, 213, 313). [Claim 4] Running gear (101, 201, 301) according to one of claims 1 or 2, characterized in that the drive means of the winding shaft (9) of the blade (1) comprises a motion reversing device (111, 211, 311) coupled to a clutch (113, 213, 313).
[Revendication 5] Train roulant (101, 201) selon la revendication 4, caractérisé en ce que le dispositif inverseur de mouvement (111, 211) et l’embrayage (113, 213) sont montés sur l’arbre d’entraînement (103, 203). [Claim 5] Undercarriage (101, 201) according to claim 4, characterized in that the motion reversing device (111, 211) and the clutch (113, 213) are mounted on the drive shaft (103, 203).
[Revendication 6] Train roulant (301) selon la revendication 4, caractérisé en ce que le dispositif inverseur de mouvement (311) et l’embrayage (313) sont montés sur l’arbre d’enroulement (9) de la lame (1). [Claim 6] Running gear (301) according to claim 4, characterized in that the movement reversing device (311) and the clutch (313) are mounted on the winding shaft (9) of the blade (1). ).
[Revendication 7] Train roulant (201, 301, 401) selon l’une quelconque des revendications 1 à 6, caractérisé en ce que l’axe d’enroulement (3) de la lame (1) est sensiblement perpendiculaire à un axe longitudinal de l’arbre d’entraînement (203, 303, 403). [Claim 7] Undercarriage (201, 301, 401) according to any one of claims 1 to 6, characterized in that the winding axis (3) of the blade (1) is substantially perpendicular to a longitudinal axis of the drive shaft (203, 303, 403).
[Revendication 8] Train roulant (101, 201, 301, 401) selon l’une quelconque des reven dications 1 à 6, caractérisé en ce que le moyen de transmission de force de la lame (1) à l’arbre d’entraînement (203, 303, 403) comporte un premier pignon conique (202, 302, 402) monté au niveau d’une extrémité de l’arbre d’enroulement (9) de la lame (1) et un deuxième pignon conique (204, 304, 404) monté au niveau d’une deuxième extrémité de l’arbre d’entraînement (203, 303, 403). [Claim 8] Running gear (101, 201, 301, 401) according to any one of claims 1 to 6, characterized in that the means for transmitting force from the blade (1) to the drive shaft (203, 303, 403) comprises a first bevel gear (202, 302, 402) mounted at one end of the winding shaft (9) of the blade (1) and a second bevel gear (204, 304, 404) mounted at a second end of the drive shaft (203, 303, 403).
[Revendication 9] Véhicule comportant un train roulant (201, 301, 401) selon l’une quelconque des revendications 1 à 8, caractérisé en ce que la lame (1) est logée dans l’habitacle dudit véhicule, de préférence à l’avant ou à l’arrière dudit véhicule. [Claim 9] Vehicle comprising a running gear (201, 301, 401) according to any one of claims 1 to 8, characterized in that the blade (1) is housed in the passenger compartment of said vehicle, preferably in the front or rear of said vehicle.
[Revendication 10] Véhicule selon la revendication 9, caractérisé en ce que la lame (1) est logée dans l’espace roue de secours du véhicule. [Claim 10] Vehicle according to claim 9, characterized in that the blade (1) is housed in the spare wheel space of the vehicle.
PCT/IB2020/057336 2019-08-13 2020-08-03 Running gear for a vehicle and vehicle equipped with such a running gear WO2021028777A1 (en)

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Application Number Priority Date Filing Date Title
FR1909193A FR3099894B1 (en) 2019-08-13 2019-08-13 Running gear for vehicle and vehicle equipped with such a running gear
FRFR1909193 2019-08-13

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2958225A1 (en) * 2010-03-31 2011-10-07 Claude Badanjak MOTOR SPRING LOAD RECYCLE
WO2015189526A2 (en) * 2014-06-11 2015-12-17 Civardi Bruno Mechanical device to assist with restarting a wheel
EP3308990A1 (en) * 2016-10-14 2018-04-18 Continental Automotive GmbH Energy storing and delivering device for a car
US20180201313A1 (en) * 2017-01-19 2018-07-19 National Taiwan Normal University Resilient power device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2958225A1 (en) * 2010-03-31 2011-10-07 Claude Badanjak MOTOR SPRING LOAD RECYCLE
WO2015189526A2 (en) * 2014-06-11 2015-12-17 Civardi Bruno Mechanical device to assist with restarting a wheel
EP3308990A1 (en) * 2016-10-14 2018-04-18 Continental Automotive GmbH Energy storing and delivering device for a car
US20180201313A1 (en) * 2017-01-19 2018-07-19 National Taiwan Normal University Resilient power device

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FR3099894A1 (en) 2021-02-19

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