WO2006062125A1 - 車輪支持・駆動装置 - Google Patents
車輪支持・駆動装置 Download PDFInfo
- Publication number
- WO2006062125A1 WO2006062125A1 PCT/JP2005/022450 JP2005022450W WO2006062125A1 WO 2006062125 A1 WO2006062125 A1 WO 2006062125A1 JP 2005022450 W JP2005022450 W JP 2005022450W WO 2006062125 A1 WO2006062125 A1 WO 2006062125A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- wheel
- motor
- rotating body
- gear
- drive device
- Prior art date
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G11/00—Resilient suspensions characterised by arrangement, location or kind of springs
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G17/00—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load
- B60G17/015—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load the regulating means comprising electric or electronic elements
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G17/00—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load
- B60G17/015—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load the regulating means comprising electric or electronic elements
- B60G17/0152—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load the regulating means comprising electric or electronic elements characterised by the action on a particular type of suspension unit
- B60G17/0157—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load the regulating means comprising electric or electronic elements characterised by the action on a particular type of suspension unit non-fluid unit, e.g. electric motor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G17/00—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load
- B60G17/015—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load the regulating means comprising electric or electronic elements
- B60G17/0195—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load the regulating means comprising electric or electronic elements characterised by the regulation being combined with other vehicle control systems
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K17/00—Arrangement or mounting of transmissions in vehicles
- B60K17/04—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing
- B60K17/043—Transmission unit disposed in on near the vehicle wheel, or between the differential gear unit and the wheel
- B60K17/046—Transmission unit disposed in on near the vehicle wheel, or between the differential gear unit and the wheel with planetary gearing having orbital motion
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- 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
- B60K7/00—Disposition of motor in, or adjacent to, traction wheel
- B60K7/0007—Disposition of motor in, or adjacent to, traction wheel the motor being electric
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L15/00—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles
- B60L15/20—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed
- B60L15/2054—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed by controlling transmissions or clutches
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2204/00—Indexing codes related to suspensions per se or to auxiliary parts
- B60G2204/10—Mounting of suspension elements
- B60G2204/30—In-wheel mountings
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2400/00—Indexing codes relating to detected, measured or calculated conditions or factors
- B60G2400/80—Exterior conditions
- B60G2400/82—Ground surface
-
- 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
- B60K7/00—Disposition of motor in, or adjacent to, traction wheel
- B60K2007/0046—Disposition of motor in, or adjacent to, traction wheel the motor moving together with the vehicle body, i.e. moving independently from the wheel axle
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- 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
- B60K7/00—Disposition of motor in, or adjacent to, traction wheel
- B60K2007/0061—Disposition of motor in, or adjacent to, traction wheel the motor axle being parallel to the wheel axle
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L2220/00—Electrical machine types; Structures or applications thereof
- B60L2220/40—Electrical machine applications
- B60L2220/44—Wheel Hub motors, i.e. integrated in the wheel hub
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L2220/00—Electrical machine types; Structures or applications thereof
- B60L2220/40—Electrical machine applications
- B60L2220/46—Wheel motors, i.e. motor connected to only one wheel
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L2240/00—Control parameters of input or output; Target parameters
- B60L2240/40—Drive Train control parameters
- B60L2240/42—Drive Train control parameters related to electric machines
- B60L2240/421—Speed
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L2240/00—Control parameters of input or output; Target parameters
- B60L2240/40—Drive Train control parameters
- B60L2240/42—Drive Train control parameters related to electric machines
- B60L2240/423—Torque
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L2270/00—Problem solutions or means not otherwise provided for
- B60L2270/10—Emission reduction
- B60L2270/14—Emission reduction of noise
- B60L2270/145—Structure borne vibrations
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H1/00—Toothed gearings for conveying rotary motion
- F16H1/02—Toothed gearings for conveying rotary motion without gears having orbital motion
- F16H1/20—Toothed gearings for conveying rotary motion without gears having orbital motion involving more than two intermeshing members
- F16H1/22—Toothed gearings for conveying rotary motion without gears having orbital motion involving more than two intermeshing members with a plurality of driving or driven shafts; with arrangements for dividing torque between two or more intermediate shafts
- F16H1/227—Toothed gearings for conveying rotary motion without gears having orbital motion involving more than two intermeshing members with a plurality of driving or driven shafts; with arrangements for dividing torque between two or more intermediate shafts comprising two or more gearwheels in mesh with the same internally toothed wheel
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- 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
- Y02T10/64—Electric machine technologies in electromobility
-
- 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
- Y02T10/72—Electric energy management in electromobility
Definitions
- the present invention relates to a technology for supporting a wheel in a vehicle so as to be movable up and down with respect to the vehicle body and driving the wheel by a motor, and in particular, a function for supporting the wheel and a function for driving the wheel.
- the present invention relates to a technique for simplifying the structure for realizing the above. Background art
- a vehicle in which a wheel is supported so as to be movable up and down with respect to a vehicle body and the wheel is driven by a motor is already known (for example, see Patent Document 1).
- Patent Document 1 JP-A-6-48192
- the motor is fixed to the wheel of the wheel, and the motor is also moved up and down as the wheel moves up and down. Therefore, in this conventional vehicle, the weight of the motor is added to the unsprung load of the vehicle, and as a result, it is difficult to reduce the underload.
- the present invention supports a wheel in a vehicle so that the wheel can move up and down with respect to the vehicle body and drives the wheel by a motor, and the function of supporting the wheel and driving the wheel.
- the task is to simplify the structure that realizes the functions to be performed.
- each section in the form of quoting the numbers of the other sections so that the technical characteristics described in each section are separated from the technical characteristics described in the other sections and become independent. It should be construed that the technical features described in each section can be made independent as appropriate according to their nature.
- a wheel support / drive device that is provided in a vehicle and supports the wheel so as to be movable up and down with respect to the vehicle body.
- a second rotating body that is rotated coaxially with and integrally with the wheel
- a first connecting mechanism that connects the first rotating body and the second rotating body to each other so as to be in contact with each other; a second connecting mechanism that elastically connects the wheel and the vehicle body to each other;
- the first rotating body may be rotated by the motor around a rotation center decentered from the rotation center of the wheel in a direction intersecting a vertical direction.
- the invention according to claim 2 of the present invention is the wheel support / drive device according to claim 1,
- the first rotating body is a drive gear;
- the second rotating body is a driven gear that meshes with and rotates with the drive gear, and the first coupling mechanism is in a state in which the driven gear can reciprocally swing around the drive gear with a certain radius.
- the second connection mechanism includes a suspension spring that elastically connects the wheel and the vehicle body to each other.
- the invention according to claim 3 of the present invention is the wheel support 'drive device according to claim 1 or claim 2,
- a sun gear that is coaxially and integrally rotated with the wheel
- a ring gear that is coaxial with and rotated relative to the wheel
- a plurality of pinion gears arranged side by side along a circumference of the same axis as the sun gear, the sun gear meshing with its outer tooth surface, and the ring gear meshing with its inner tooth surface;
- a carrier that holds the plurality of pinion gears so that the relative positional relationship between the rotation centers of the plurality of pinion gears is maintained.
- a planetary gear mechanism is constituted by the sun gear, the ring gear, the plurality of pinion gears and the carrier,
- the first rotating body is configured as one of the plurality of pinion gears, and the second rotating body is configured as the sun gear.
- the invention according to claim 4 of the present invention is the wheel support 'drive device according to claim 1 or claim 2,
- a sun gear that is coaxial with the wheel and rotated relative thereto;
- a ring gear that is coaxially and integrally rotated with the wheel
- a plurality of pinion gears arranged side by side along a circumference of the same axis as the sun gear, the sun gear meshing with its outer tooth surface, and the ring gear meshing with its inner tooth surface;
- a carrier that holds the plurality of pinion gears so that the relative positional relationship between the rotation centers of the plurality of pinion gears is maintained.
- a planetary gear mechanism is constituted by the sun gear, the ring gear, the plurality of pinion gears and the carrier,
- the first rotating body is configured as one of the plurality of pinion gears, and the second rotating body is configured as the ring gear.
- the invention according to claim 5 of the present invention is the wheel support / drive device according to any one of claims 1 to 4! In a hurry
- the motor is coaxially connected to the first rotating body.
- the wheels are non-steered wheels that are not steered during steering of the vehicle
- the motor and the first rotating body are supported by the vehicle body at fixed positions.
- the invention according to claim 7 of the present invention is the wheel support / drive device according to any one of claims 1 to 4! In a hurry
- the wheels are steered wheels that are steered during steering of the vehicle;
- the motor and the first rotating body are supported by the vehicle body so as to be rotated together with the steered wheels during steering of the vehicle.
- a control device that controls an output torque of the motor by controlling a drive signal to the motor.
- the invention according to claim 9 of the present invention is the wheel support / drive device according to claim 8,
- the control device includes a damping characteristic control unit that controls a damping characteristic in a vertical movement of the wheel with respect to the vehicle body by controlling a swing characteristic of the wheel about the swing center through the motor.
- the invention according to claim 10 of the present invention is the wheel support 'drive device according to any of claims 8 or 9, wherein:
- the control device includes a wheel drive torque control unit that controls a drive torque around the rotation center of the wheel via the motor.
- the wheel is capable of reciprocatingly swinging around the rotation center of the first rotating body, and the second rotating mechanism is connected to the first rotating body by the first connecting mechanism.
- the rotating bodies are connected.
- the second rotating body can rotate with the wheel.
- the first rotating body is rotated by the motor around the rotation center that is eccentric to the rotation center force of the wheel in the direction intersecting the vertical direction.
- the same motor realizes the rotation (spinning) of the wheel and the reciprocating oscillation (revolution) around the rotation center of the first rotating body of the same wheel.
- the wheel While the rotation of the wheel contributes to the running (driving) of the vehicle, the reciprocating rocking of the wheel contributes to the suspension function of the vehicle.
- the characteristic of the reciprocating oscillation can be controlled by the motor.
- the wheel is inertially connected to the vehicle body by the second connecting mechanism.
- this wheel support / drive device it is possible to realize the function of driving the vehicle and the suspension function together by the same motor, and therefore, these functions are provided as separate actuators. Compared to the case where it has to be realized by this, it is easy to simplify the structure necessary to realize these functions.
- the motor that realizes the rotation and reciprocation of the wheel is supported by the vehicle body rather than being fixed to the wheel.
- the motor does not need to move up and down as the wheel moves up and down, so that the unsprung state of the vehicle is smaller than when the motor is fixed to the wheel. It becomes easy to reduce the load.
- the wheel movement locus forms an arc shape.
- the position of the center of swing is variable in the vehicle front-rear direction in a side view of the wheel
- the motion trajectory of the wheel is the vehicle body or stationary so that the center of rotation of the wheel can move. It depends on the direction regulated by the member. For example, if the direction in which the rotation center of the wheel can move is restricted so as to coincide with the vertical direction of the vehicle, the movement locus of the wheel is formed in the vertical direction of the vehicle. In this case, although the wheel is reciprocally swung around the rotation center of the first rotating body, the wheel is substantially reciprocated linearly in the vertical direction of the vehicle.
- the unsprung load of the vehicle (especially the load corresponding to the inertia in the vertical direction of the vehicle) is the first so that the position of the center of rotation of the first rotating body is variable in the longitudinal direction of the vehicle in a side view of the wheel. Even when the rotating body is mounted on the vehicle body, it does not increase as compared with the case where the first rotating body is mounted on the vehicle body so that the position of the rotation center of the first rotating body is unchanged in the side view of the wheel.
- this wheel support 'drive device can be implemented, for example, in such a manner that the motor and the first rotating body are connected coaxially with each other or in a manner in which they are connected non-coaxially with each other. Noh.
- this wheel support 'drive device may be implemented, for example, in the first mode in which the connection between the first rotating body and the second rotating body is performed using a gear mechanism, or the first rotating body. It is possible to implement in a second mode which is performed using an endless circulating body (for example, a belt, a chain, etc.) wound around the second rotating body.
- Both the first and second modes are provided between the first rotating body and the second rotating body. It is classified as a contact type that transmits force via the contact surface.
- the connection between the first rotating body and the second rotating body follows, for example, the same principle as that in which a force is transmitted in a fluid type torque converter. It is also possible to carry out in a non-contact manner, such as a mode in which is used as a pressure transmission medium between the first rotating body and the second rotating body.
- the "motor” in this section is used, for example, so as to be supported by the vehicle body in a state where it cannot move at least in the vertical direction relative to the vehicle body.
- the first rotating body, the second rotating body, and the force gear mechanism are connected to each other, and specifically engaged with each other. They are connected to each other using a combination of a rotating drive gear and a driven gear.
- the drive gear and the driven gear are coupled to each other by a suspension arm (or suspension link) in a state where the driven gear has a constant radius and can swing back and forth around the drive gear.
- the wheel and the vehicle body are elastically connected to each other by a suspension spring.
- the first rotating body and the second rotating body are coupled to each other using a planetary gear mechanism that is an example of a gear mechanism.
- a planetary gear mechanism a plurality of pinion gears that simultaneously mesh with the sun gear are concentrically connected to each other by a carrier.
- the pinion gear is also called a planetary gear
- the ring gear is also called an outer gear or an internal gear.
- the first rotating body is configured as one of a plurality of pinion gears connected to each other by a carrier. Therefore, the one rotation gear and the second rotation gear When the sun gear, which corresponds to the body, rotates while meshing with each other, even if a large force acts on them, it is suppressed that the force is biased to one of the pion gears.
- the first rotating body is eccentric with respect to the second rotating body. In the meantime, it is easy to mechanically stabilize the mechanism for transmitting force.
- the first rotating body and the second rotating body are connected to each other using a planetary gear mechanism which is an example of a gear mechanism.
- a planetary gear mechanism which is an example of a gear mechanism.
- a plurality of pinions that simultaneously mesh with the ring gear are concentrically connected to each other by a carrier.
- the pinion gear is also called a planetary gear
- the ring gear is also called an outer gear or an internal gear.
- the first rotating body is configured as one of a plurality of pinion gears connected to each other by a carrier. Therefore, the one rotation gear and the second rotation gear When a ring gear corresponding to the body rotates while meshing with each other, even if a large force is likely to act between them, the generation of a force biased to that one pinion gear is suppressed.
- the first rotating body is eccentric with respect to the second rotating body. In the meantime, it is easy to mechanically stabilize the mechanism for transmitting force.
- the motor and the first rotating body are connected to each other as compared with the case where the motor is connected non-coaxially to the first rotating body. Simplify the structure It becomes easy to unitize.
- the rotation and reciprocating swing of the steered wheel are realized by a motor. Further, during the steering of the vehicle, the motor and the first rotating body are rotated together with the steered wheels. Therefore, the angle formed by the rotation axis of the motor and the rotation axis of the first rotating body does not change during steering.
- the wheel support / drive device is formed by the rotation axis of the motor and the rotation axis of the first rotating body during the steering of the vehicle.
- the motor and the first rotating body are connected to each other.
- the maximum value of the angle during steering is limited, and as a result, the maximum value of the wheel turning angle is also limited.
- the angle formed by the rotation axis of the motor and the rotation axis of the first rotating body does not change during steering. It is possible to avoid a situation in which the maximum value of the wheel turning angle is limited in order to avoid a decrease in the efficiency of transmission of rotation between the body and the body.
- the "motor and first rotating body" in this section are supported by the vehicle body so as to be rotated in a plane generally parallel to the horizontal plane of the vehicle integrally with the steered wheels during steering of the vehicle, for example. Is done.
- the wheel swing characteristics are controlled when the output torque of the motor is controlled.
- the swing characteristic for example, it is possible to control the bounce characteristic and Z or rebound characteristic of the wheel while the vehicle is running. Controlling these bounce characteristics and Z or rebound characteristics, for example, can improve the ride comfort of the vehicle affected by the vibration of the wheels and the ability of the wheels to follow the unevenness of the road surface.
- a discontinuous part such as a protrusion or a step on the road surface
- a large force is suddenly input to the road surface vehicle body or passes through the discontinuous part.
- a phenomenon in which the vibration of the wheel continues is likely to occur later.
- An example of the "wheel drive torque control unit" in claim 10 is to suppress the vibration of the wheel caused by the wheel traveling so as to pass the discontinuous part on the road surface, This is done to improve the riding comfort of the vehicle and the road surface followability of the wheels.
- FIG. 1 is a side view showing a mechanical configuration of a wheel support / drive device 10 according to a first embodiment of the present invention.
- FIG. 2 is a block diagram showing an electrical configuration of the wheel support 'drive device 10 shown in FIG.
- FIG. 3 is a flowchart conceptually showing a step crossing control program stored in ROM 66 in FIG.
- FIG. 4 is a table and a side view for explaining the step climbing control program shown in FIG. 3 for each control mode.
- FIG. 5 is a side view showing a mechanical configuration of a wheel support / drive device 110 according to a second embodiment of the present invention.
- FIG. 6 is a front view showing the wheel support / drive device 110 shown in FIG. 5.
- FIG. 6 is a front view showing the wheel support / drive device 110 shown in FIG. 5.
- FIG. 7 is a plan view showing the wheel support / drive device 110 shown in FIG. 5.
- FIG. 7 is a plan view showing the wheel support / drive device 110 shown in FIG. 5.
- FIG. 8 is a plan view for explaining a steering state of a vehicle on which the wheel support / drive device 110 shown in FIG. 5 is mounted.
- FIG. 9 is a side showing a mechanical configuration of a wheel support / drive device 200 according to the third embodiment of the present invention.
- FIG. 9 is a side showing a mechanical configuration of a wheel support / drive device 200 according to the third embodiment of the present invention.
- ⁇ 10 It is a front view showing the wheel support 'drive device 200 shown in FIG.
- FIG. 11 is a plan view showing the wheel support / drive device 200 shown in FIG. 9. Explanation of symbols
- FIG. 1 is a side view showing a mechanical configuration of the wheel support / drive device 10 according to the first embodiment of the present invention.
- the wheel 14 is a virtual part.
- the wheel support / drive device 10 is mounted on a vehicle including a vehicle body 12 and a plurality of wheels 14 including left and right front wheels and left and right rear wheels. In FIG. 1, the wheel support / drive device 10 is shown focusing on one of the wheels 14.
- the wheel support / drive device 10 includes, for each wheel 14, a motor 20 fixed to the vehicle body 12 and a drive gear connected coaxially to the rotating shaft 22 of the motor 20. And 24.
- the rotation center of the drive gear 24 is eccentric from the rotation center of the wheel 14 in a direction intersecting the vertical direction.
- the motor 20 is supported by the vehicle body 12 so that the relative displacement with respect to the vehicle body 12 does not substantially occur in all directions.
- the drive gear 24 can rotate (spin) in both directions indicated by an arrow A in FIG.
- the wheel 14 is coaxially provided with a driven gear 30 that is engaged and driven by the drive gear 24.
- the wheel 14 is rotated integrally with the driven gear 30.
- the driven gear 30 can rotate (spin) in both directions indicated by arrow B in FIG.
- the wheel support drive device 10 further includes a suspension arm 40 that connects the rotation shaft 32 of the drive gear 24 and the rotation shaft 34 of the driven gear 30 to each wheel 14.
- the suspension arm 40 connects the drive gear 24 and the driven gear 30 to each other in a meshed state with the driven gear 30 having a constant radius around the drive gear 24 and capable of swinging back and forth. is doing. Therefore, the rotation center of the wheel 14 and the rotation center of the driven gear 30 that coincide with each other can swing (revolve) around the rotation center of the drive gear 24 in both directions indicated by an arrow C in FIG.
- this wheel support 'drive device 10 further includes a suspension for each wheel 14. It has a spring 50.
- the suspension spring 50 inertially connects the vehicle body 12 and the wheel 14 to each other.
- the suspension spring 50 is expanded and contracted in both directions indicated by arrows D in FIG. 1 as the wheel 14 reciprocally swings (movement including vertical movement).
- the suspension spring 50 realizes elastic reciprocating rocking of the wheel 14 with the center of rotation of the drive gear 24 as the rocking center.
- the suspension arm 40 and the suspension spring 50 cooperate with each other to form the suspension 52 of the wheel 14.
- FIG. 2 conceptually shows the electrical configuration of the wheel support / drive device 10 in a block diagram.
- the wheel support / drive device 10 includes a controller 60.
- the controller 60 is composed mainly of a computer 62, and the computer 62 is well known! As you can see, the CPU64, ROM66, and RAM68 are not shown in the figure! RU
- a motor 20 is connected to the controller 60 for each wheel 14.
- FL means for the left front wheel
- FR means for the right front wheel
- RL means for the left rear wheel
- RR Means for right rear wheel.
- the controller 60 includes an operation state quantity sensor 80 that detects an operation state quantity input from a vehicle driver via an operation member (for example, an accelerator operation member, a brake operation member, a steering operation member, etc.). Is connected.
- the controller 60 is further connected to a vehicle state quantity sensor 82 for detecting a motion state quantity of the vehicle (for example, vehicle speed, vehicle longitudinal acceleration, vehicle lateral acceleration, etc.).
- the controller 60 further includes an arm angle sensor 84 for detecting the angle of the suspension arm 40 as an example of a sensor for detecting a state quantity of the vertical movement of the wheel 14 with respect to the vehicle body 12 for each wheel 14. ,It is connected. Further, a motor speed sensor 86 for detecting the rotational speed of the motor 20 is connected to the controller 60 as an example of a sensor for detecting the rotational state quantity of the motor 20 for each wheel 14.
- the arm angle sensor 84 and the motor speed sensor 86 are used to detect the state quantity of the vertical movement of the wheel 14 relative to the vehicle body 12.
- the arm angle sensor 84 and the motor speed sensor 86 are used, or other sensors (for example, a sensor that detects the stroke of the suspension spring 50). ) Can be used.
- the ROM 66 stores various programs in advance, including a main control program and a step climbing control program. Both programs are executed by the CPU 64 while using the RAM 68.
- the main control program is not indispensable for understanding the present invention.
- the main control program is configured to reflect the driver's intention based on the operation state quantity detected by the operation state quantity sensor 80 and the vehicle state quantity detected by the vehicle state quantity sensor 82. Planar motion is performed to control the motor 20 independently for each wheel 14 independently of each other.
- the step climbing control program is such that the wheel 14 is a discontinuous portion such as a step, a protrusion, etc. on the road surface.
- step 90 When traveling so as to pass through, a large vibration or a continuous vibration is generated in the wheel 14 by the input to the wheel 14 from the road surface.
- the reciprocating oscillation characteristic that is, the bounce characteristic and the rebound characteristic of each wheel 14 is executed to control the motor 20 for each wheel 14 independently of each other.
- the driving torque of each wheel 14 is actively controlled.
- FIG. 3 conceptually shows a flowchart of the step climbing control program.
- This step-overstep control program is repeatedly executed for each wheel 14 while the vehicle is running.
- step S1 hereinafter simply referred to as “S1”, the same applies to other steps
- the arm angle sensor 84 and the motor speed sensor 86 corresponding to the wheel 14 of this time are used.
- a detection signal representing each detection result is input.
- suspension 40 force When it is detected that the drive gear 24 has rotated more than a certain angle around the center of rotation of the drive gear 24 from the neutral position shown in FIG. 1 toward the vehicle body 12 (counterclockwise in the figure) It is determined that the current wheel 14 is in a state where it begins to ride on the step 90.
- the determination in S2 is NO, and it is determined in S3 that the current wheel 14 is in a normal traveling state.
- the driving torque of the motor 20 that rotates the wheel 14 in the forward direction is in the meshing position with the sun gear 30 that is radially away from the center of rotation of the input capon 24.
- the tangential force acting on the sun gear 30 is used as a medium to convert the suspension arm 40 in the direction to separate the wheel 14 from the vehicle body 12 into a swinging torque around the rotation center of the input capon 24.
- the converted swing torque generates a tire pressing force in which the motor 20 presses the tire of the wheel 14 against the road surface.
- the driving torque of the wheel 14 this time may deviate from the value for normal driving. In this case, the driving torque is restored to the value for normal running by executing S4.
- the drive torque of the current wheel 14 is controlled so that the current wheel 14 is instantaneously in a non-driven state, for example, as shown in FIG. 4 (b).
- the tire pressing force by the motor 20 becomes instantaneously weaker than during normal driving. Therefore, the wheel 14 this time becomes easier to approach the vehicle body 12 than during normal running. As a result, the wheel 14 this time A large vertical movement is not generated in the vehicle body 12 for the height of the step 90.
- detection signals are input from the arm angle sensor 84 and the motor speed sensor 86.
- the current wheel 14 is It is determined whether or not the force is in a state where it begins to descend from a step 90 on the road surface. For example, when it is detected that the suspension arm 40 has rotated more than a certain angle around the rotation center of the driving force 24 in the direction away from the vehicle body 12 (clockwise in the figure), the current wheel 14 is stepped. It is determined that it is in a state of starting from 90.
- the step start control mode is selected, and as shown in Fig. 4 (c), the driving torque of the wheel 14 is increased to a value larger than that during normal traveling, so as to increase instantaneously.
- the drive signal of the motor 20 is controlled.
- the tire pressing force by the motor 20 becomes stronger than during normal driving.
- the force that separates the wheel 14 from the vehicle body 12 this time is greater than that during normal driving.
- a large vertical movement is not generated in the vehicle body 12 for the height of the step 90 at which the wheel 14 descends this time.
- the time fluctuation amount of the angle of the suspension arm 40 detected by the arm angle sensor 84 is below the reference value
- the time fluctuation amount of the rotation speed of the motor 20 detected by Z or the motor speed sensor 86 is the reference.
- the determination of S10 will be YES, and if the force to shift to S3 does not converge, the determination force of S10 will be SNO. Transition.
- S11 the drive torque is instantaneously decreased, and then in S12, the drive torque is instantaneously increased. It is desirable that the drive torque increase / decrease by executing S11 and S12 be synchronized with the current vertical movement of the wheel 14 as much as possible. As the drive torque increases or decreases, the vibration of the wheel 14 is gradually attenuated. As a result, the phenomenon that the vehicle body 12 still vibrates even after the wheel 14 gets over the step 90 is suppressed.
- the drive gear 24 constitutes an example of the “first rotating body” in the item (1)
- the driven gear 30 corresponds to the “second
- the suspension arm 40 constitutes an example of the “first coupling mechanism” in the same paragraph
- the suspension spring 50 constitutes an example of the “second coupling mechanism” in the same paragraph.
- the wheel 14 shown in FIG. 1 constitutes an example of the “non-steered wheel” in the item (5)
- the controller 60 is the “control device” in the item (7).
- An example is configured, and the part of the controller 60 that executes the step overpass control program shown in FIG. 3 constitutes an example of the “wheel drive torque control unit” in the section (9).
- Figure 5 shows the module from the cross-section as A—A in Figure 6. It is the side view which looked at the one side.
- this embodiment is different from the first embodiment only in mechanical configuration and has the same electrical configuration, only the mechanical configuration will be described, and the same reference numerals or names will be used for the electrical configuration. The detailed explanation is omitted.
- the rotational torque force of the motor 20 is transmitted to the wheel 14 by a gear train in which the driving torque 24 coaxial with the motor 20 is engaged with the driven gear 30 coaxial with the wheel 14.
- the rotational torque force of the motor 20 is transmitted to the wheel 14 by the planetary gear mechanism 114.
- Planetary gear mechanism 114 is configured to include a sun gear 120, a plurality of pin gears 122, 122, 122, a carrier 124, and a ring gear 126, as is well known. .
- the sun gear 120 is rotated coaxially with the wheel 14 and integrally therewith.
- the ring gear 126 is connected to the wheel on the outer periphery via a bearing or the like, and is rotated relative to the wheel 14.
- the sun gear 120 and the ring gear 126 rotate in opposite directions.
- the plurality of pinion gears 122, 122, 122 are arranged in parallel along a circumference of the same axis as the sun gear 120.
- the pinion gears 122, 122, 122 are arranged so as to engage with the sun gear 120 at the outer tooth surface 130, while engaging with the ring gear 126 at the inner tooth surface 132 thereof.
- the plurality of pinion gears 122, 122, 122 are held by the carrier 124 so that the relative positional relationship between the rotation centers of the plurality of pinion gears 122, 122, 122 is maintained.
- One of the plurality of pinion gears 122, 122, 122 is selected as the input cupon 140, and the motor 20 is coaxially connected to the input cupon 140. Relative angular displacement does not occur between the input pinions 140 and the motor 20, and the motor 20 is supported by the vehicle body 12 so that it cannot move at least in the vertical direction. There is no relative angular displacement between the input pinion 140 and the carrier 124, but the carrier 124 is supported so as to be able to swing back and forth with the wheel 14 around the rotation center of the motor 20 and the input pin 140 as the swing center. ing.
- suspension spring 50 force body 12 and wheel 14 (for example, sun The rotating shaft 144 of the gear 120 and the portion of the suspension arm 40 that reciprocally swings as the wheel 14 reciprocally swings) are elastically connected to each other.
- the wheel 14 is reciprocally swung around the rotation center of the motor 20, that is, the rotation center of the input pion 140. By the reciprocating swing, the vertical movement of the wheel 14 relative to the vehicle body 12 is realized.
- the suspension arm 40 and the suspension spring 50 jointly constitute the suspension 150 of the wheel 14.
- the suspension arm 40 forces from the neutral position shown in Fig. 5 to the direction in which the wheel 14 approaches the vehicle body 12 and the direction in which the wheel 14 moves away from the vehicle body 12.
- the range of the rotation angle that is selectively rotated means the operation range of the suspension 150.
- FIG. 6 is a front view of the wheel support / drive device 110 with respect to the wheel 14 that is a steered wheel among steered wheels and non-steered wheels in the vehicle.
- the wheel 14 and the ring gear 126 are shown in a vertical sectional view including the rotation center axis 34 of the wheel 14. Therefore, in the wheel support / drive device 110 shown in FIG. 6, the motor 20 is attached to the frame 160 fixed to the vehicle body 12 so as not to be movable in the vertical direction, while the rotation axis S extending generally in the vertical direction. Around it is pivotally attached. By this rotation, the wheel 14 is swung or steered in a horizontal plane, and thus the vehicle is steered. That is, the rotation axis S means the steering center of the wheel 14.
- FIG. 7 the wheel support / drive device 110 shown in FIG. 6 is shown in a plan view in a straight traveling state of the vehicle.
- FIG. 8 (a) the same wheel support / drive device 110 is shown in a schematic plan view when the vehicle is turning right, and FIG. 8 (b) is shown when the vehicle is turning left.
- the wheel 14 and the ring gear 126 are shown in a horizontal sectional view including the rotation center shaft 34 of the wheel 14.
- the wheel 14 when the wheel 14 bounces and rebounds, the wheel 14 is moved up and down with the motor 20 and the input capuon 140 left behind.
- the wheel 14 When the wheel 14 is steered, the wheel 14 is rotated in the horizontal plane integrally with the motor 20 and the input capon 140.
- the input pinion 140 is the above-mentioned
- (1) constitutes an example of the “first rotating body”
- the sun gear 120 constitutes an example of the “second rotating body” in the same paragraph
- the suspension arm 40 corresponds to the “first connecting mechanism” in the same paragraph
- the suspension spring 50 constitutes an example of “second coupling mechanism” in the same section.
- the wheel 14 constitutes an example of the “steering wheel” in the item (6), and the motor 20 and the input capuon 140 are the “motor and first rotating body” in the same term. It constitutes an example.
- planetary gear mechanism 114 may rotate sun gear 120 relative to wheel 14 and rotate ring gear 126 integrally with wheel 14.
- the driving force of the motor 20 is transmitted from the input capon 140 to the wheel and the wheel 14 via the ring gear 126. Since the sun gear 120 idles, it is preferable to connect the sun gear 120 and the rotation center shaft 34 of the wheel 14 or between the wheel 14 and the rotation center shaft 34 of the wheel 14 via a bearing or the like.
- the input capon 140 constitutes an example of the “first rotating body” in the above item (1)
- the ring gear 126 constitutes an example of the “second rotating body” in the same term. .
- FIG. 9 to 11 show a wheel support / drive device 200 according to the present embodiment in a side view, a front view, and a plan view, respectively.
- FIG. 9 is a side view of the cross-sectional force motor side as shown by BB in FIG.
- the wheel 14 and the ring gear 226 in FIG. 10 are shown in a vertical sectional view including the rotation center axis 34 of the wheel 14, and the wheel 14 and the ring gear 226 in FIG. Including horizontal cross-sectional view.
- the wheel 14 has a steel wheel 216 made of rubber on its outer side.
- a tire 218 is mounted. Air is sealed in the tire 218 under pressure.
- a planetary gear mechanism 214 is arranged inside the wheel 216. Inside the wheel 216, a part of the axial dimension of the motor 20, that is, an end portion close to the planetary gear mechanism 214 among both end portions of the housing of the motor 20 is also arranged. Therefore, it is easier to reduce the overall axial dimension of the motor 20 and the wheel 216 than when the entire axial dimension of the motor 20 is disposed outside the wheel 216.
- this planetary gear mechanism 214 includes a sun gear 220, a plurality of pinion gears 222, 222, 222, a carrier 224, and a ring gear 226, as in the second embodiment. It is configured.
- the sun gear 220 is rotated coaxially with the wheel 14 and integrally therewith.
- the ring gear 226 is connected to the wheel 216 on the outer periphery via a bearing or the like, and is rotated relative to the wheel 14.
- the sun gear 220 and the ring gear 226 rotate in opposite directions.
- the plurality of pinion gears 222, 222, 222 are arranged side by side along one circumference of the same axis as the sun gear 220, and mesh with the sun gear 220 at the outer tooth surface 230 thereof,
- the ring gear 226 is arranged so as to engage with the inner tooth surface 232 of the ring gear 226.
- the plurality of pinion gears 222, 222, 222 are held by a carrier 224.
- One of the plurality of pinion gears 222, 222, 222 is referred to as an input capuon 240 and is coaxially connected to the motor 20.
- a relative angular displacement does not occur between the input pinion 240 and the motor 20, and the motor 20 is supported by the vehicle body 12 so as not to move at least in the vertical direction.
- relative angular displacement does not occur between the input capon 240 and the carrier 224, the carrier 224 is supported so as to be able to swing back and forth with the wheel 14 around the rotation shaft 32 of the motor 20 and the input pinion 240 as the swing center. Speak.
- suspension spring 50 force body 12 and wheel 14 (for example, rotating shaft 244 of sun gear 220, reciprocation associated with back and forth swing of wheel 14 of suspension arm 210 described in detail later)
- the rocking part is elastically connected to each other.
- Wheel 14 is swinging the rotation center of motor 20, that is, the rotation center of input pion 240. It is swung back and forth as a core. By the reciprocating swing, the vertical movement of the wheel 14 relative to the vehicle body 12 is realized.
- the suspension arm 210 and the suspension spring 50 jointly constitute the suspension 250 of the wheel 14.
- FIG. 10 is a front view of the wheel support / drive device 200 with respect to the wheel 14 that is a steered wheel among steered wheels and non-steered wheels in the vehicle.
- the motor 20 is attached to a frame 260 fixed to the vehicle body 12 so as not to move in the upward and downward directions, but on the rotation axis S extending in the generally vertical direction. It is pivotally mounted via a peristaltic shaft 262 that extends generally vertically. By this rotation, the wheel 14 is swung or steered in the horizontal plane, and thus the vehicle is steered.
- the pair of suspension arms 210 and 210 force the motor 20 and the planetary gear mechanism 214 to face each other with a gap in the direction of the rotation axis of the motor 20.
- the rotation shaft 264 is coaxially penetrated across the motor 20 and the input capuon 240, and the rotation shaft 264 and the rotation shaft 244 of the sun gear 220 are paired with a pair of suspension arms. 210 and 210 are passed.
- One suspension arm 210 (shown on the left side in FIG. 10) includes an end portion of the rotating shaft 264 that protrudes from the motor 20 to the opposite side of the wheel 14, and a sun gear of both ends of the rotating shaft 244. The ends protruding from 220 to the opposite side of the wheel 14 are connected to each other so as to be rotatable with the distance unchanged.
- the other suspension arm 210 (shown on the right side in FIG.
- the suspension arms 40 and 40 are arranged together in the space between the wheel 14 and the motor 20.
- a pair of suspension arms 210, 210 force motor 20 and a pusher disposed inside the wheel 14 are used. It is arranged so as to sandwich the planetary gear mechanism 214.
- the suspension arm 210, the 210 force motor 20 and the input capuon 240 and the sun gear 220 are connected to each other! In the axial direction of the rotating shafts 244 and 264, they face each other at a distance longer than that of the second embodiment.
- the individual rigidity and thickness of the suspension arms 210 and 210 can be increased without increasing the amount of suspension arm 40 and 40 in the second embodiment.
- the entire motor 20 is disposed outside the wheel 14.
- at least a part of the motor 20 in the axial direction is disposed inside the wheel 14.
- the motor 20 and the wheels 14 in the vehicle can be arranged more compactly and more compactly than in the second embodiment, and the wheel support 'driving device 200 can be reduced in size and weight. It becomes easy. Further, according to this embodiment, it is easy to bring the turning axis S of the wheel 14 that is a steered wheel, that is, the steering center (kingpin axis) close to the wheel 14.
- the input pinion 240 is the above-mentioned (1) constitutes an example of “first rotating body”, sun gear 220 constitutes an example of “second rotating body” in the same paragraph, and a pair of suspension arms 210, 210
- the suspension spring 50 constitutes an example of the “second coupling mechanism” in the same section.
- the wheel 14 constitutes an example of the “steering wheel” in the above section (6)
- the motor 20 and the input capuon 240 are the “motor and first rotating body” in the same section. It constitutes an example.
- the planetary gear mechanism 214 may rotate the sun gear 220 relative to the wheel 14 and rotate the ring gear 226 integrally with the wheel 14.
- the driving force of the motor 20 is transmitted from the incoming capon 240 to the wheel 14 via the ring gear 226. Since the sun gear 220 idles, it is preferable to connect the sun gear 220 and the rotating shaft 244 or the wheel 14 and the rotating shaft 244 via a bearing or the like.
- the input capuon 240 constitutes an example of the “first rotating body” in the above item (1)
- the ring gear 226 constitutes an example of the “second rotating body” in the same term. .
- any of the embodiments described above can be changed to a mode in which the displacement speed of the wheel 14 in the vertical direction, that is, the vertical stroke speed is detected by the sensor while the vehicle is running.
- the vertical stroke speed can be detected, for example, using an arm angle sensor 84 and as a time differential value of an angle detected by the arm angle sensor 84.
- the controller 60 controls the drive signal of the motor 20 so that the output torque of the motor 20 and thus the drive torque of the wheel 14 are controlled based on the detected vertical stroke speed.
- rotation of the wheel (autorotation) and reciprocal oscillation (revolution) around the rotation center of the first rotating body of the same wheel are realized by the same motor.
- the rotation of the wheel contributes to the running (driving) of the vehicle, while the reciprocating oscillation of the wheel contributes to the suspension function of the vehicle.
- the characteristic of the reciprocating oscillation can be controlled by the motor.
- the wheel is inertially connected to the vehicle body by the second connecting mechanism.
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Abstract
Description
Claims
Priority Applications (1)
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US11/663,156 US20070272458A1 (en) | 2004-12-09 | 2005-12-07 | Wheel Supporting and Driving Device |
Applications Claiming Priority (2)
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JP2004356225 | 2004-12-09 | ||
JP2004-356225 | 2004-12-09 |
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WO2006062125A1 true WO2006062125A1 (ja) | 2006-06-15 |
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PCT/JP2005/022450 WO2006062125A1 (ja) | 2004-12-09 | 2005-12-07 | 車輪支持・駆動装置 |
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US (1) | US20070272458A1 (ja) |
WO (1) | WO2006062125A1 (ja) |
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KR102676722B1 (ko) * | 2022-03-29 | 2024-06-18 | 현대자동차주식회사 | 유니버설 휠 구동 시스템 |
KR102674558B1 (ko) | 2022-03-29 | 2024-06-13 | 현대자동차주식회사 | 유니버설 휠 구동 시스템 |
FI20235333A1 (en) * | 2023-03-22 | 2024-09-23 | 18 Wheels Oy | Vehicle suspension arrangement and electric vehicle |
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CN110121441B (zh) * | 2017-01-10 | 2022-06-17 | 日立安斯泰莫株式会社 | 马达驱动装置 |
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