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WO2010095610A1 - Hybrid electric vehicle - Google Patents

Hybrid electric vehicle Download PDF

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Publication number
WO2010095610A1
WO2010095610A1 PCT/JP2010/052258 JP2010052258W WO2010095610A1 WO 2010095610 A1 WO2010095610 A1 WO 2010095610A1 JP 2010052258 W JP2010052258 W JP 2010052258W WO 2010095610 A1 WO2010095610 A1 WO 2010095610A1
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WO
WIPO (PCT)
Prior art keywords
generator
traveling motor
electric vehicle
hybrid electric
engine
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2010/052258
Other languages
French (fr)
Japanese (ja)
Inventor
豊 宮本
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Individual
Original Assignee
Individual
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Filing date
Publication date
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Publication of WO2010095610A1 publication Critical patent/WO2010095610A1/en
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Ceased legal-status Critical Current

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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
    • 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
    • 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 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 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by the architecture of the hybrid electric vehicle
    • B60K6/46—Series 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
    • 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 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
    • B60K6/22—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 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs
    • B60K6/36—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 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs characterised by the transmission gearings
    • 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
    • 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 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
    • B60K6/22—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 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs
    • B60K6/40—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 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs characterised by the assembly or relative disposition of components
    • 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
    • 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 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 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
    • 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
    • B60L50/00—Electric propulsion with power supplied within the vehicle
    • B60L50/10—Electric propulsion with power supplied within the vehicle using propulsion power supplied by engine-driven generators, e.g. generators driven by combustion engines
    • B60L50/16—Electric propulsion with power supplied within the vehicle using propulsion power supplied by engine-driven generators, e.g. generators driven by combustion engines with provision for separate direct mechanical propulsion
    • 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
    • B60L50/00—Electric propulsion with power supplied within the vehicle
    • B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
    • B60L50/60—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries
    • B60L50/61—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries by batteries charged by engine-driven generators, e.g. series hybrid electric vehicles
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K51/00—Dynamo-electric gears, i.e. dynamo-electric means for transmitting mechanical power from a driving shaft to a driven shaft and comprising structurally interrelated motor and generator parts
    • 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
    • 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 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 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
    • B60K2006/4833—Step up or reduction gearing driving generator, e.g. to operate generator in most efficient speed range
    • 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
    • B60L2220/50—Structural details of electrical machines
    • B60L2220/52—Clutch motors
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/006—Structural association of a motor or generator with the drive train of a motor vehicle
    • 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
    • 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
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries
    • 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
    • Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors

Definitions

  • the present invention relates to a hybrid electric vehicle on which an engine (internal combustion engine), a generator, and a traveling motor are mounted and travels by electricity generated by the power of the engine.
  • a hybrid electric vehicle that runs on electricity generated by the power of the engine is driven by the engine, a generator that generates power using the power from the engine, and the electricity generated by the generator, driving the left and right drive wheels. And a traveling motor.
  • a hybrid electric vehicle is disclosed in Patent Document 1 below.
  • an engine, a generator, and a traveling motor are arranged side by side in the front-rear direction.
  • hybrid electric vehicles travel when the driving force is transmitted from the traveling motor to the left and right driving wheels, it is required that the traveling motor can transmit a large driving force to these driving wheels.
  • the driving shaft extending from the driving motor to the driving wheel is a heavy object that can transmit a large driving force, the weight of the vehicle body becomes heavy and the fuel consumption deteriorates. It is also required to reduce the weight of the drive mechanism for transmitting the power to the drive wheels.
  • the space for arranging the engine, the generator, and the traveling motor in the hybrid electric vehicle is a limited and small space like the space for arranging the transmission in a general engine type vehicle. Also, it is required to reduce the size of the power generation mechanism for generating power by transmitting engine power to a generator.
  • An object of the present invention is to provide a hybrid electric vehicle capable of transmitting a large driving force from a traveling motor to driving wheels, reducing the weight of the driving mechanism, and reducing the size of the power generation power mechanism. There is to offer.
  • a hybrid electric vehicle includes an engine, a generator that generates electric power using the power from the engine, and a traveling motor that is supplied with electricity generated by the generator and drives left and right drive wheels.
  • the generator and the traveling motor are disposed at a position in the axial extension direction of the output shaft of the engine, and the traveling motor is configured to be the engine and the generator.
  • a drive shaft for driving the left and right drive wheels by the rotational force of the rotor is a hollow shaft, and is coupled to the rotor of the travel motor.
  • a connecting shaft that connects the output shaft and the generator is inserted into the hollow drive shaft.
  • the drive shaft that is coupled to the rotor of the traveling motor and drives the left and right drive wheels by the rotational force of the rotor is a hollow shaft. Can be increased. For this reason, a large driving force can be transmitted from the traveling motor to the left and right driving wheels by the driving shaft having a large diameter.
  • this drive shaft is a hollow shaft, this drive shaft does not become a heavy object, and thus the weight of the drive mechanism for transmitting the driving force of the traveling motor to the drive wheels is reduced. be able to.
  • the generator and the traveling motor are disposed at a position in the axial extension direction of the output shaft of the engine, and the traveling motor is disposed between the engine and the generator. Since the connecting shaft that connects the output shaft of the engine and the generator is inserted into the hollow drive shaft, a power generation mechanism for transmitting the engine power to the generator for power generation is provided. In other words, it is not formed by a route that bypasses the motor for traveling, and this route is a route that connects the engine and the generator at a short distance. For this reason, the power generation power mechanism can be made simple with a small number of constituent members, and the whole power generation power mechanism can be downsized.
  • the hollow drive shaft in the present invention is rotatably supported by a bearing on the connecting shaft that is inserted into the hollow drive shaft.
  • the direction of rotation of the drive shaft when the automobile is traveling forward and the direction of rotation of the connecting shaft for causing the generator to generate power during forward traveling may be opposite, but are preferably the same. If the rotational direction of the drive shaft and the rotational direction of the connecting shaft are the same, a bearing with a small allowable limit value of the number of rotations can be used, thereby reducing the cost of the bearing, Energy loss that becomes heat can be reduced.
  • the engine in the present invention may be a horizontal engine in which the axial direction of the output shaft is the left-right direction, or a vertical engine in which the axial direction of the output shaft is the front-rear direction.
  • the traveling motor may be a synchronous motor, an induction motor, or a commutator motor.
  • the generator may be a synchronous generator, an induction generator, or a commutator generator.
  • the drive shaft for transmitting the driving force of the traveling motor to the left and right driving wheels is connected to a differential device for distributing the driving force from the traveling motor to the left and right driving wheels via a transmission. .
  • the arrangement position of this transmission is arbitrary, and an example thereof is to arrange the transmission between the engine and the travel motor when the engine is the above-mentioned horizontal engine.
  • the generator and the traveling motor can be disposed adjacent to each other.
  • a unit in which the housing of the generator and the housing of the traveling motor are integrated can be obtained.
  • the generator and the traveling motor are a unit in which the housing of the generator and the housing of the traveling motor are integrated, the generator and the traveling motor are used as one device. Will be composed. For this reason, the operation
  • the generator housing and the traction motor housing are integrated with each other when the generator housing and the traction motor housing are formed as separate members.
  • a part of the housing formed as one member may be a generator housing and the other part may be a traveling motor housing.
  • the transmission may be disposed between the traveling motor and the generator.
  • this differential device is connected to the center between the left and right drive wheels. It is preferable to arrange in the vicinity of the position or the center position.
  • the present invention can be applied to a newly manufactured new vehicle and also to an automobile obtained by remodeling an existing engine type vehicle (engine type used vehicle).
  • the hybrid electric vehicle according to the present invention is a modified car of an engine type existing vehicle
  • the transmission is removed from the engine-type existing vehicle, and the generator and the traveling motor are arranged in the space of the engine-type existing vehicle where the transmission is arranged.
  • the present invention can be applied to engine-type existing vehicles.
  • the differential device In a general engine type existing vehicle, the differential device is disposed at or near the center position between the left and right drive wheels.
  • This remodeling work can be performed by using the differential of an existing engine type vehicle as it is.
  • the traveling motor in the present invention may be an inner rotor type motor in which the rotor is arranged inside the stator, or an outer rotor type motor in which the rotor is arranged outside the stator.
  • the traveling motor is an outer rotor type motor, a large torque can be output from the rotor of the traveling motor, so that the driving torque that can be transmitted to the left and right driving wheels by the hollow driving shaft can be increased. .
  • a multi-blade fan for air cooling may be provided in the rotor of the traveling motor, and an intake port and an exhaust port may be provided in the housing of the traveling motor.
  • the generator may be an inner rotor type generator in which the rotor is arranged inside the stator, or may be an outer rotor type generator in which the rotor is arranged outside the stator.
  • a multiblade fan for air cooling may be provided in the rotor of the generator, and an intake port and an exhaust port may be provided in the generator housing.
  • the traveling motor is an outer rotor type motor
  • a hollow non-rotating shaft into which the connecting shaft is inserted is arranged at the center of the stator of the traveling motor.
  • the housing of the traveling motor are connected to each other via a connecting portion provided to reach the housing of the traveling motor on the non-rotating shaft. It is also possible to perform this by fitting a convex portion provided on one of the inner surfaces of the inner surface and a concave portion provided on the other in the axial direction of the non-rotating shaft.
  • the non-rotating shaft and the housing of the motor for traveling can be connected via the connecting portion by a simple structure and operation of fitting the convex portion to the concave portion in the axial direction of the non-rotating shaft.
  • an elastic member for placing the non-rotating shaft in a floating support state on the housing of the traveling motor may be disposed on the convex portion.
  • the non-rotating shaft is extended to the central portion of the stator of the generator so that the non-rotating shaft becomes the central portion of the stator of the generator.
  • the generator housing and the travel motor housing may be integrated with each other as well as the non-rotating shaft.
  • the operation for arranging the stator of the generator at a predetermined position and the stator of the traveling motor are predetermined. It is possible to simultaneously perform the operation of arranging the position, and the simplification of the operation can be achieved.
  • the present invention described above can be applied to a front engine in which the engine is disposed in the front and the left and right front wheels are driven, and a front drive automobile, and the rear in which the engine is disposed in the rear and the left and right rear wheels are driven.
  • the present invention can also be applied to an engine and a rear drive vehicle, and can also be applied to a four-wheel drive vehicle in which all four wheels are driven by an engine arranged at the front or rear.
  • the present invention it is possible to transmit a large driving force from the traveling motor to the driving wheel, to reduce the weight of the driving mechanism, and to reduce the size of the power generation mechanism.
  • FIG. 1 is a schematic diagram showing the configuration of a mechanical system and an electrical system for a hybrid electric vehicle according to a first embodiment of the present invention.
  • FIG. 2 is a view similar to FIG. 1 showing a hybrid electric vehicle according to the second embodiment of the present invention.
  • FIG. 3 is a view similar to FIG. 1 showing a hybrid electric vehicle according to a third embodiment of the present invention.
  • FIG. 4 is a view similar to FIG. 1 showing a hybrid electric vehicle according to a fourth alternative embodiment of the present invention.
  • FIG. 5 is a cross-sectional view taken along line S5-S5 of FIG.
  • FIG. 1 is a conceptual diagram showing the configuration of a mechanical system and an electrical system for a hybrid electric vehicle according to a first embodiment of the present invention.
  • the hybrid electric vehicle is supplied with an engine (internal combustion engine) 1, a generator 2 that generates power using the power from the engine 1, and electricity generated by the generator 2, thereby forming left and right drive wheels.
  • a traveling motor 5 for driving the left and right front wheels 3 and 4 is mounted.
  • the engine 1, the generator 2, and the traveling motor 5 are disposed in an engine room provided in front of the vehicle interior. Therefore, the vehicle according to this embodiment is a front engine or front drive vehicle in which the engine 1 is disposed in the front and the front wheels 3 and 4 are driven.
  • the generator 2 and the traveling motor 5 are disposed at a position in the axial direction of the crankshaft 1A that is an output shaft of the engine 1, and the engine 1 has an axial direction of the crankshaft 1A in the left-right direction. Therefore, the engine 1, the generator 2, and the traveling motor 5 are arranged in the left-right direction in the engine room.
  • the generator 2 is an inner rotor type generator in which the rotor 2A is arranged inside the stator 2B, and the traveling motor 5 is also an inner rotor type motor in which the rotor 5A is arranged inside the stator 5B. It has become. For this reason, the stator 2 ⁇ / b> B of the generator 2 is attached to the housing 6 of the generator 2, and the stator 5 ⁇ / b> B of the traveling motor 5 is attached to the housing 7 of the traveling motor 5.
  • the housing 6 of the generator 2 and the housing 7 of the traveling motor 5 are integrated. In this embodiment, the housing 6 and the housing 7 are integrated as a single member. Of the left and right side portions of the large housing, one portion is the housing 6 of the generator 2 and the other portion is the housing 7 of the traveling motor 5.
  • housings 6 and 7 are formed as separate members, and these separate members are joined together. May be used.
  • the traveling motor 5 is disposed between the engine 1 and the generator 2.
  • a drive shaft 9 for transmitting the rotational force of the rotor 5A to the left and right front wheels 3 and 4 is coupled to the rotor 5A of the travel motor 5 and extends from the travel motor 5 to the engine 1 side.
  • 9 is a hollow shaft.
  • the drive shaft 9 and the differential device 10 that distributes the driving force from the traveling motor 5 to the left and right front wheels 3 and 4 are connected via a transmission 11 for the drive mechanism. These are disposed between the engine 1 and the traveling motor 5. Further, the differential device 10 is arranged at or near the center position between the left and right front wheels 3 and 4.
  • the drive shaft 9 and the transmission 11 described above constitute a drive mechanism for transmitting the driving force of the traveling motor 5 to the left and right front wheels 3, 4.
  • This drive mechanism requires a clutch (not shown) or the like.
  • a device may be provided.
  • the transmission 11 may be a continuously variable transmission or a multistage transmission.
  • a connecting shaft 13 is connected to the crankshaft 1A of the engine 1 via a transmission 12 for a power generation power mechanism.
  • the connecting shaft 13 extending to the traveling motor 5 and the generator 2 side is inserted into the drive shaft 9 which is a hollow shaft, and the rotor 2A of the generator 2 is connected to the connecting shaft 13.
  • the connecting shaft 13 is rotatably supported by bearings 14 and 15, and the drive shaft 9 is rotatably supported by the connecting shaft 13 by bearings 16 and 17.
  • the transmission 12 and the connecting shaft 13 constitute a power generation power mechanism for transmitting power from the engine 1 to the generator 2 to generate power.
  • the generator 2 When the engine 1 is started and the power of the engine 1 is transmitted to the generator 2, the generator 2 generates power, and the generated electricity is sent to the battery 19 via the terminal 2 ⁇ / b> C of the generator 2 and the inverter 18. Charged.
  • the traveling motor 5 is driven by electricity supplied from the battery 19 via the inverter 18 and the terminal 5C of the traveling motor 5, and this driving force is applied to the left and right front wheels via the driving mechanism and the differential device 10 described above.
  • the vehicle according to the present embodiment travels.
  • the generator 2 also serves as a starter motor for starting the engine 1, and when the engine 1 is started, electricity is supplied from the battery 19 to the generator 2 via the inverter 18. Further, when the traveling automobile decelerates, the traveling motor 5 becomes a generator. That is, the traveling motor 5 generates power by the regenerative brake that reduces the traveling speed of the automobile, and the electricity generated by the power generation is charged to the battery 19 via the terminal 5C of the traveling motor 5 and the inverter 18.
  • a cooling water passage 22 is formed in the housing 6 of the generator 2 and the housing 7 of the traveling motor 5 for circulating cooling water for cooling the heat generated from the generator 2 and the traveling motor 5. ing.
  • the generator 2 and the traveling motor 5 are disposed adjacent to each other in the left-right direction. For this reason, as described above, the housing 6 of the generator 2 and the housing 7 of the traveling motor 5 can be integrated. Therefore, the generator 2 and the traveling motor 5 are configured as a single unit. For this reason, the generator 2 and the traveling motor 5 constitute a single device as a whole.
  • the drive shaft 9 that is coupled to the rotor 5A of the traveling motor 5 and drives the left and right front wheels 3, 4 with the rotational force of the rotor 5A is as follows. Since it is a hollow shaft, the diameter of the drive shaft 9 can be increased. Therefore, a large driving force can be transmitted from the traveling motor 5 to the left and right front wheels 3 and 4. On the other hand, since the drive shaft 9 is a hollow shaft, the drive shaft 9 does not become heavy, and therefore, a drive mechanism for transmitting the drive force of the traveling motor 5 to the front wheels 3 and 4. Can be reduced in weight.
  • the generator 2 and the traveling motor 5 are disposed at a position in the axial direction of the crankshaft 1 ⁇ / b> A of the engine 1, and the traveling motor 5 is connected to the engine 1.
  • the connecting shaft 13 that is disposed between the generator 2 and connects the crankshaft 1A of the engine 1 and the generator 2 is inserted into the drive shaft 9 that is a hollow shaft.
  • the power generation mechanism for transmitting the power of the engine 1 to the generator 2 to generate power is not formed by a path that bypasses the traveling motor 5, and this path connects the engine 1 and the generator 2.
  • the route is connected at a short distance.
  • the said power generation power mechanism can be made into a simple thing with few constituent members, and the whole power generation power mechanism can be reduced in size.
  • the rotational direction of the drive shaft 9 for causing the automobile to travel forward is the same as the rotational direction of the connecting shaft 13 for causing the generator 2 to generate power during forward traveling.
  • the bearings 16 and 17 for rotatably supporting the drive shaft 9 on the connecting shaft 13 can be made bearings having a small allowable limit value of the rotational speed. For this reason, it is possible to reduce the cost of the bearings 16 and 17, to increase the speed of the rotor 5 ⁇ / b> A of the traveling motor 5, and to reduce the energy loss that becomes the heat of the bearings 16 and 17. Therefore, the transmission efficiency of the driving force transmitted from the traveling motor 5 to the left and right front wheels 3 and 4 can be improved.
  • the generator 2 and the traveling motor 5 are disposed adjacent to each other, and the generator 2 and the traveling motor 5 are integrated with the housing 6 of the generator 2 and the housing 7 of the traveling motor 5. Therefore, the generator 2 and the traveling motor 5 are configured as a single device. For this reason, the operation
  • the differential device 10 for distributing the driving force to the left and right front wheels 3 and 4 is disposed at a central position between these front wheels 3 and 4 or in the vicinity of the central position. It is the same as the position of the differential device in the automobile. For this reason, the car which concerns on this embodiment can be made into the car which modified the engine type existing vehicle (engine type used car).
  • the hybrid electric vehicle according to the present embodiment is a vehicle obtained by modifying an existing engine type vehicle, an engine in which a transmission for transmitting the power of the engine 1 to the left and right front wheels 3 and 4 is mounted.
  • the existing model is remodeled, and this modification is done by removing the transmission from the engine type existing car and placing the generator 2 and the traveling motor 5 in the space of the existing engine type car where the transmission was located.
  • the engine 1 and the differential device 10 are the same as the engine and the differential device mounted on the engine type existing vehicle, and the transmission 11 for the drive mechanism, the transmission 12 for the power generation mechanism, and the battery described above. Electrical equipment such as 19 is newly installed in a hybrid electric vehicle.
  • FIG. 2 shows a hybrid electric vehicle according to the second embodiment.
  • the engine 31 is a horizontal engine in which the axial direction of the crankshaft 31A that is the output shaft of the engine 31 is the left-right direction, and the generator 32 and the travel motor 35 are The crankshaft 31A is disposed at a position in the axial extension direction.
  • the generator 32 of this embodiment is also an inner rotor type generator in which the rotor 32A is arranged inside the stator 32B, and the traveling motor 35 also has the rotor 35A arranged inside the stator 35B. It is an inner rotor type motor.
  • stator 32 ⁇ / b> B of the generator 32 is attached to the housing 36 of the generator 32, and the stator 35 ⁇ / b> B of the traveling motor 35 is attached to the housing 37 of the traveling motor 5.
  • the housing 36 of the generator 32 and the housing 37 of the traveling motor 35 of the present embodiment are formed as separate members, and these housings 36 and 37 are integrated.
  • the drive shaft 39 that is coupled to the rotor 35A of the traveling motor 35 and drives the left and right front wheels 3, 4 by the rotational force of the rotor 35A is a hollow shaft.
  • a connecting shaft 43 for connecting the crankshaft 31 ⁇ / b> A of the engine 31 and the generator 32 and causing the generator 32 to generate power with the power of the engine 31 is inserted into the hollow drive shaft 39.
  • the drive shaft 39 is rotatably supported on the connecting shaft 43 by bearings 46 and 47.
  • the size of the engine 31 of this embodiment is smaller than that of the engine 1 of FIG. That is, the embodiment of FIG. 2 is an embodiment applicable when the size of the engine is small.
  • the driving force of the traveling motor 35 is transmitted to the left and right front wheels 3, 4.
  • a transmission 41 provided in the drive mechanism is disposed between the generator 32 and the traveling motor 35.
  • the driving force of the traveling motor 5 shifted by the transmission 41 is applied to the front wheels 3 and 4 by the differential device 10 disposed at or near the center position between the left and right front wheels 3 and 4. Distributed.
  • This embodiment can also be applied to a case where this engine type existing vehicle is a hybrid electric vehicle by remodeling the engine type existing vehicle.
  • the transmission is removed from the existing engine type vehicle on which the transmission for transmitting the power of the engine 31 to the left and right front wheels 3 and 4 is mounted, as in the embodiment of FIG.
  • the generator 32 and the traveling motor 35 are disposed in the space of the existing engine type vehicle where the transmission is disposed.
  • the rotational direction of the drive shaft 39 for causing the automobile to travel forward is the same as the rotational direction of the connecting shaft 43 for causing the generator 32 to generate power during forward traveling.
  • Cooling water passages 42 ⁇ / b> A and 42 ⁇ / b> B are formed inside the housing 36 of the generator 32 and the housing 37 of the traveling motor 35.
  • FIG. 3 shows a hybrid electric vehicle according to the third embodiment.
  • the engine 51 is a horizontal engine in which the axial direction of the crankshaft 51A that is the output shaft of the engine 51 is the left-right direction, and the generator 52 and the travel motor 55 are The crankshaft 51A is disposed at a position in the axial extension direction.
  • the generator 52 of this embodiment is an outer rotor type generator in which the rotor 52A is disposed outside the stator 52B, and the traveling motor 55 is also an outer rotor in which the rotor 55A is disposed outside the stator 55B. It is a motor of the system.
  • a drive shaft 59 for transmitting the rotational force of the rotor 55A to the left and right front wheels 3 and 4 is coupled to the rotor 55A of the traveling motor 55 via an arm portion 59A of the drive shaft 59.
  • the drive shaft 59 extending from the traveling motor 55 toward the engine 51 is a hollow shaft.
  • the drive shaft 59 and the differential device 10 that distributes the driving force from the traveling motor 55 to the left and right front wheels 3 and 4 are connected via a transmission 61 for the drive mechanism.
  • the engine 51 and the traveling motor 55 are disposed.
  • the differential device 10 is arranged at or near the center position between the left and right front wheels 3 and 4.
  • this embodiment can also be applied to the case where the engine type existing vehicle is a hybrid electric vehicle by remodeling the engine type existing vehicle.
  • a connecting shaft 63 connected to the crankshaft 51A of the engine 51 via a transmission 62 for a power generation power mechanism connects the crankshaft 51A and the generator 52, and the connecting shaft 63 is a hollow shaft.
  • the drive shaft 59 is inserted into the drive shaft 59, and the drive shaft 59 is rotatably supported by the coupling shaft 63 by bearings 66 and 67.
  • the rotation direction of the drive shaft 59 for causing the vehicle to travel forward is the same as the rotation direction of the connection shaft 63 when the connection shaft 63 is rotated by the power of the engine 51 and the generator 52 generates power. It has become.
  • the rotor 52A of the generator 52 is coupled to the connecting shaft 63 via an arm portion 63A of the connecting shaft 63.
  • a non-rotating shaft 70 to which the stator 52A is coupled is disposed at the center of the stator 52B of the generator 52.
  • the non-rotating shaft 70 and the housing 56 of the generator 52 are connected to the non-rotating shaft 70 up to the housing 56. It is connected via a connecting part 70A provided.
  • a non-rotating shaft 71 to which the stator 55B is coupled is disposed at the center of the stator 55B of the traveling motor 55, and the non-rotating shaft 71 and the housing 57 of the traveling motor 55 are connected to the non-rotating shaft 71.
  • the connecting shaft 63 is inserted, and the non-rotating shafts 70 and 71 are supported non-rotatingly on the connecting shaft 63 by bearings 64 and 65. . Further, cooling water passages 62A and 62B are formed inside the connecting portions 70A and 71A.
  • the rotor 52A of the generator 52 is provided with a multi-blade fan 72, and the housing 56 of the generator 52 is provided with an intake port 73A and an exhaust port 73B.
  • the rotor 55A of the traveling motor 55 is also provided with a multi-blade fan 74, and the housing 57 of the traveling motor 55 is also provided with an intake port 75A and an exhaust port 75B. Also in this embodiment, the housings 56 and 57 are integrated.
  • the traveling motor 55 of this embodiment is an outer rotor type motor in which the rotor 55A is disposed outside the stator 55B, and thus can output a large torque from the rotor 55A. Therefore, the drive torque that can be transmitted from the drive shaft 59 coupled to the rotor 55A to the left and right front wheels 3 and 4 can be made larger than in the embodiment of FIGS.
  • the generators are generated by the multiblade fans 72 and 74 and the intake ports 73A and 75A and the exhaust ports 73B and 75B of the housings 56 and 57.
  • An air flow for air-cooling the motor 52 and the traveling motor 55 can be circulated inside the housings 56 and 57. For this reason, the generator 52 and the traveling motor 55 can be effectively cooled together with the cooling water flowing through the cooling water passages 62A and 62B.
  • the multi-blade fans 72 and 74 are connected to the generator 52 and the rotors 52A and 55A of the traveling motor 55 whose rotational speed is high because the disposition position from the center of the non-rotating shafts 70 and 71 is far. Since it is provided, the air cooling efficiency can be improved.
  • FIG. 4 shows a hybrid electric vehicle according to the fourth embodiment using a horizontally installed engine 51.
  • the generator 82 is an outer rotor type generator in which the rotor 82A is disposed outside the stator 82B, and the traveling motor 85 is the rotor 85A. Is an outer rotor type motor disposed outside the stator 85B.
  • the rotor 82A of the generator 82 is provided with a multi-blade fan 102, and the housing 86 of the generator 82 is provided with an intake port 103A and an exhaust port 103B.
  • the rotor 85A of the traveling motor 85 is also provided with a multi-blade fan 104, and the housing 87 of the traveling motor 85 is also provided with an intake port 105A and an exhaust port 105B.
  • a hollow drive shaft 89 for transmitting the driving force of the travel motor 85 to the left and right front wheels 3 and 4 via the transmission 61 and the differential device 10 is connected to the rotor 85A of the travel motor 85 and the drive shaft. It is connected via 89 arm parts 89A.
  • the rotor 82A of the generator 82 is coupled to a connecting shaft 93 for connecting the crankshaft 51A of the engine 51 and the generator 82 via an arm portion 93A of the connecting shaft 93.
  • the non-rotating shaft 101 disposed at the center of the stator 85B of the traveling motor 85 and coupled to the stator 85B extends to the center of the stator 82B of the generator 82.
  • the stator 82B is coupled to the non-rotating shaft 101. Therefore, the non-rotating shaft 101 is also a non-rotating shaft for the stator 82B of the generator 82.
  • the non-rotating shaft 101 is provided with a connecting portion 101 A that reaches the housing 87 of the traveling motor 85, and the connecting portion 101 A is connected to the housing 87.
  • the housing 86 of the generator 82 and the housing 87 of the traveling motor 85 are integrated.
  • the integration of the housings 86 and 87 in this embodiment is performed by using the respective housings 86 and 87 as separate members and connecting these separate members.
  • the integration is performed by using one of the left and right sides of the large housing formed as one member as the housing of the generator 82.
  • the other part may be used as the housing of the traveling motor 85.
  • the connecting shaft 93 is inserted into a hollow driving shaft 89, and the driving shaft 89 is rotatably supported by the connecting shaft 93 by bearings 96 and 97.
  • the connecting shaft 93 is also inserted into the hollow non-rotating shaft 101, and the non-rotating shaft 101 is supported non-rotatingly on the connecting shaft 63 by bearings 94 and 95. Further, a cooling water passage 92 is formed inside the connecting portion 101A.
  • the rotational direction of the drive shaft 89 for causing the automobile to travel forward is the same as the rotational direction of the connecting shaft 93 for causing the generator 82 to generate power during forward traveling.
  • the non-rotating shaft 101 is a non-rotating shaft for both the generator 82 and the traveling motor 85 and the housings 86 and 87 are integrated.
  • this operation includes the operation for arranging the stator 82B of the generator 82 at a predetermined position and the stator 85B of the traveling motor 85. This is an operation for simultaneously performing the operation of arranging at a predetermined position. For this reason, these operations can be performed easily and in a short time.
  • the connecting portion 70A of the non-rotating shaft 70 is connected to the housing 56 of the generator 52, and the stator of the traveling motor 55 is connected.
  • the connecting portion 71A of the non-rotating shaft 71 is connected to the housing 57 of the traveling motor 55.
  • the connecting portion 101A is connected to the housing 87 of the traveling motor 85
  • the stator 82B of the generator 82 and the stator 85B of the traveling motor 85 can be simultaneously disposed at predetermined positions.
  • connecting tools such as bolts and nuts may be used.
  • the structure according to this embodiment for connecting the connecting portion 101A to the housing 87 of the traveling motor 85 is as shown in FIG.
  • FIG. 5 is a cross-sectional view taken along line S5-S5 of FIG. 101 A of connecting parts consist of the main body 110 of 101 A of connecting parts, and the convex part 111 formed in the outer peripheral part of this main body 110 by multiple numbers at equal intervals in the circumferential direction.
  • These convex portions 111 are end portions on the housing 87 side of the traveling motor 85 in the connecting portion 101A.
  • the same number of concave portions 112 as the convex portions 111 are formed at positions corresponding to the respective convex portions 111.
  • the shape of these concave portions 112 corresponds to the shape of the convex portions 111.
  • Each convex portion 111 is composed of a base portion made of rubber 111A, which is an elastic member, and a tip portion made of a thick plate 111B.
  • the rubber 111A is bonded to the main body 110 and the thick plate 111B by welding or bonding. Has been.
  • the operation for connecting the connecting portion 101A to the housing 87 of the traveling motor 85 is performed by fitting the convex portion 111 of the connecting portion 101A into the concave portion 112 of the housing 87 in the axial direction of the non-rotating shaft 101. . Since the connecting portion 101A can be connected to the housing 87 only by performing the fitting operation, the connecting structure and the connecting operation can be simplified.
  • the non-rotating shaft 101 and the connecting shaft 93 inserted through the non-rotating shaft 101 are provided.
  • the generator 82 and the housings 86 and 87 of the traveling motor 85 can be in a floating support state. Therefore, the torque acting on the stators 82B and 85B and the external force acting on the generator 82 and the traveling motor 85 when the rotors 82A and 85A of the generator 82 and the traveling motor 85 rotate are alleviated from the rubber 111A.
  • the non-rotating shaft 101 and the connecting shaft 93 can be prevented from being affected by these torques and external forces.
  • the connecting structure shown in FIG. 5 is for connecting the connecting portion 70A of the non-rotating shaft 70 to the housing 56 of the generator 52 and the connecting portion 71A of the non-rotating shaft 71 in the embodiment of FIG. It can also be applied to connect to the housing 57 of 55.
  • an in-vehicle charger is connected to the battery 19, and the in-vehicle charger is connected to a commercial power source provided in a general home.
  • the battery 19 may be charged from both the generator and the commercial power source.
  • the vehicle according to each embodiment may be a plug-in type electric vehicle.
  • the present invention can be used for a hybrid electric vehicle in which an engine, a generator, and a traveling motor are mounted and travels by electricity generated by the power of the engine.

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  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Power Engineering (AREA)
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  • Sustainable Energy (AREA)
  • Hybrid Electric Vehicles (AREA)
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Abstract

Disclosed is a hybrid electric vehicle in which a large amount of drive power can be transmitted from a drive motor to the drive wheels, in which the weight of the drive mechanism can be reduced, and the size of the power generation mechanism can be reduced. Engines (1,31,51), electric generators (2,32,52,82) which generate electricity using the power from the engines, and travel motors (5,35,55,85) which are supplied with the electricity generated by the electric generators in order to drive the left and right drive wheels (3,4) are provided in the vehicle. The electric generators and the travel motors are disposed at positions in the extension directions of the axes of output shafts (1A,31A,51A) of the engines, and the travel motors are positioned between the engines and electric generators. Drive shafts (9,39,59,89) connected to rotors (5A,35A,55A,85A) of the travel motors in order to drive the left and right drive wheels constitute hollow shafts. Connection shafts (13,43,63,93) which connect the output shafts of the engines and the electric generators are inserted into the hollow drive shafts.

Description

ハイブリッド型電気自動車Hybrid electric vehicle

　本発明は、エンジン（内燃機関）と発電機と走行用モータとが搭載され、エンジンの動力で発電された電気により走行するハイブリッド型電気自動車に関する。 The present invention relates to a hybrid electric vehicle on which an engine (internal combustion engine), a generator, and a traveling motor are mounted and travels by electricity generated by the power of the engine.

　エンジンの動力で発電された電気により走行するハイブリッド型電気自動車は、エンジンと、このエンジンからの動力で発電する発電機と、この発電機で発電された電気が供給され、左右の駆動輪を駆動させるための走行用モータと、を備えている。このようなハイブリッド型電気自動車は、下記の特許文献１に示されている。この特許文献１のハイブリッド型電気自動車では、エンジンと発電機と走行用モータが前後方向に並べられて配置されている。
特開平１０－１７８７０４号公報 A hybrid electric vehicle that runs on electricity generated by the power of the engine is driven by the engine, a generator that generates power using the power from the engine, and the electricity generated by the generator, driving the left and right drive wheels. And a traveling motor. Such a hybrid electric vehicle is disclosed in Patent Document 1 below. In the hybrid electric vehicle of Patent Document 1, an engine, a generator, and a traveling motor are arranged side by side in the front-rear direction.
Japanese Patent Laid-Open No. 10-178704

　ハイブリッド型電気自動車は、左右の駆動輪に走行用モータから駆動力が伝達されることにより走行するため、走行用モータからこれらの駆動輪に大きな駆動力を伝達できるようにすることが求められる。また、その一方で、走行用モータから駆動輪へ延びる駆動軸を、大きな駆動力を伝達できる大重量物としたのでは、車体重量が重くなって燃費が悪化するため、走行用モータの駆動力を駆動輪に伝達するための駆動機構を軽量化も求められる。また、ハイブリッド型電気自動車におけるエンジンや発電機、走行用モータを配置するためのスペースは、一般のエンジン型自動車におけるトランスミッションを配置するためのスペースと同様に、限定された小さいスペースとなっているため、エンジンの動力を発電機に伝達して発電するための発電動力機構を、シンプルで小型化することも求められる。 Since hybrid electric vehicles travel when the driving force is transmitted from the traveling motor to the left and right driving wheels, it is required that the traveling motor can transmit a large driving force to these driving wheels. On the other hand, if the driving shaft extending from the driving motor to the driving wheel is a heavy object that can transmit a large driving force, the weight of the vehicle body becomes heavy and the fuel consumption deteriorates. It is also required to reduce the weight of the drive mechanism for transmitting the power to the drive wheels. In addition, the space for arranging the engine, the generator, and the traveling motor in the hybrid electric vehicle is a limited and small space like the space for arranging the transmission in a general engine type vehicle. Also, it is required to reduce the size of the power generation mechanism for generating power by transmitting engine power to a generator.

　本発明の目的は、走行用モータから駆動輪に大きな駆動力を伝達できるとともに、駆動機構の軽量化を図ることができ、また、発電動力機構の小型化も図ることができるハイブリッド型電気自動車を提供するところにある。 An object of the present invention is to provide a hybrid electric vehicle capable of transmitting a large driving force from a traveling motor to driving wheels, reducing the weight of the driving mechanism, and reducing the size of the power generation power mechanism. There is to offer.

　本発明に係るハイブリッド型電気自動車は、エンジンと、このエンジンからの動力で発電する発電機と、この発電機で発電された電気が供給され、左右の駆動輪を駆動させるための走行用モータと、を備えているハイブリッド型電気自動車において、前記エンジンの出力軸の軸線延長方向の位置に前記発電機と前記走行用モータとが配置されているとともに、この走行用モータが前記エンジンと前記発電機との間に配置されており、前記走行用モータのロータと結合され、このロータの回転力で前記左右の駆動輪を駆動させるための駆動軸が中空軸になっているとともに、前記エンジンの前記出力軸と前記発電機とを連結する連結軸が前記中空の駆動軸の内部に挿通されていることを特徴とするものである。 A hybrid electric vehicle according to the present invention includes an engine, a generator that generates electric power using the power from the engine, and a traveling motor that is supplied with electricity generated by the generator and drives left and right drive wheels. , The generator and the traveling motor are disposed at a position in the axial extension direction of the output shaft of the engine, and the traveling motor is configured to be the engine and the generator. And a drive shaft for driving the left and right drive wheels by the rotational force of the rotor is a hollow shaft, and is coupled to the rotor of the travel motor. A connecting shaft that connects the output shaft and the generator is inserted into the hollow drive shaft.

　本発明に係るハイブリッド型電気自動車では、走行用モータのロータと結合され、このロータの回転力で左右の駆動輪を駆動させるための駆動軸が中空軸になっているため、この駆動軸の直径を大きくできる。このため、直径が大きいこの駆動軸により、走行用モータから左右の駆動輪に大きな駆動力を伝達できるようになる。また、その一方で、この駆動軸は中空軸であるため、この駆動軸は大重量物にならず、このため、走行用モータの駆動力を駆動輪に伝達するための駆動機構を軽量化することができる。 In the hybrid electric vehicle according to the present invention, the drive shaft that is coupled to the rotor of the traveling motor and drives the left and right drive wheels by the rotational force of the rotor is a hollow shaft. Can be increased. For this reason, a large driving force can be transmitted from the traveling motor to the left and right driving wheels by the driving shaft having a large diameter. On the other hand, since this drive shaft is a hollow shaft, this drive shaft does not become a heavy object, and thus the weight of the drive mechanism for transmitting the driving force of the traveling motor to the drive wheels is reduced. be able to.

　さらに、本発明に係るハイブリッド型電気自動車では、エンジンの出力軸の軸線延長方向の位置に発電機と走行用モータとが配置されているとともに、この走行用モータがエンジンと発電機との間に配置されており、エンジンの出力軸と発電機とを連結する連結軸は中空の駆動軸の内部に挿通されているため、エンジンの動力を発電機に伝達して発電するための発電動力機構が、走行用モータを迂回した経路で形成されていないことになり、この経路は、エンジンと発電機とを短い距離で繋いだ経路となる。このため、前記発電動力機構を構成部材点数が少ないシンプルのものにできて、この発電動力機構の全体を小型化することができる。 Furthermore, in the hybrid electric vehicle according to the present invention, the generator and the traveling motor are disposed at a position in the axial extension direction of the output shaft of the engine, and the traveling motor is disposed between the engine and the generator. Since the connecting shaft that connects the output shaft of the engine and the generator is inserted into the hollow drive shaft, a power generation mechanism for transmitting the engine power to the generator for power generation is provided. In other words, it is not formed by a route that bypasses the motor for traveling, and this route is a route that connects the engine and the generator at a short distance. For this reason, the power generation power mechanism can be made simple with a small number of constituent members, and the whole power generation power mechanism can be downsized.

　本発明における中空の駆動軸は、この中空の駆動軸の内部に挿通される前記連結軸にベアリングで回転自在に支持されることになる。自動車を前進走行させるときの駆動軸の回転方向と、この前進走行時に発電機に発電させるための連結軸の回転方向は、逆でもよいが、同じとすることが好ましい。駆動軸の回転方向と連結軸の回転方向とを同じにすると、回転数の許容限界値が小さいベアリングを用いることができ、これにより、ベアリングの低コスト化を図ることができ、また、ベアリングの熱となってしまうエネルギ損失を少なくできる。 The hollow drive shaft in the present invention is rotatably supported by a bearing on the connecting shaft that is inserted into the hollow drive shaft. The direction of rotation of the drive shaft when the automobile is traveling forward and the direction of rotation of the connecting shaft for causing the generator to generate power during forward traveling may be opposite, but are preferably the same. If the rotational direction of the drive shaft and the rotational direction of the connecting shaft are the same, a bearing with a small allowable limit value of the number of rotations can be used, thereby reducing the cost of the bearing, Energy loss that becomes heat can be reduced.

　本発明におけるエンジンは、出力軸の軸方向が左右方向となった横置き型エンジンでもよく、出力軸の軸方向が前後方向となった縦置き型エンジンでもよい。また、走行用モータは、同期式モータでもよく、誘導モータでもよく、整流子モータでもよい。発電機も、同期式発電機でもよく、誘導発電機でもよく、整流子発電機でもよい。 The engine in the present invention may be a horizontal engine in which the axial direction of the output shaft is the left-right direction, or a vertical engine in which the axial direction of the output shaft is the front-rear direction. The traveling motor may be a synchronous motor, an induction motor, or a commutator motor. The generator may be a synchronous generator, an induction generator, or a commutator generator.

　走行用モータの駆動力を左右の駆動輪に伝達するための前記駆動軸は、走行用モータからの駆動力を左右の駆動輪に分配するための差動装置に変速装置を介して接続される。 The drive shaft for transmitting the driving force of the traveling motor to the left and right driving wheels is connected to a differential device for distributing the driving force from the traveling motor to the left and right driving wheels via a transmission. .

　この変速装置の配置位置は任意であり、その一例は、エンジンを上述の横置き型エンジンとした場合には、変速装置をエンジンと走行用モータとの間に配置することである。 The arrangement position of this transmission is arbitrary, and an example thereof is to arrange the transmission between the engine and the travel motor when the engine is the above-mentioned horizontal engine.

　このように変速装置をエンジンと走行用モータとの間に配置する場合には、発電機と走行用モータとを互いに隣接させて配置することができるため、これらの発電機と走行用モータとを、発電機のハウジングと走行用モータのハウジングとが一体化されたユニットとすることができる。 Thus, when the transmission is arranged between the engine and the traveling motor, the generator and the traveling motor can be disposed adjacent to each other. In addition, a unit in which the housing of the generator and the housing of the traveling motor are integrated can be obtained.

　このように発電機と走行用モータとを、発電機のハウジングと走行用モータのハウジングとが一体化されたユニットとした場合には、これらの発電機と走行用モータは、１個の装置として構成されることになる。このため、発電機及び走行用モータを取り扱う作業や、ハイブリッド型電気自動車に発電機及び走行用モータを搭載する作業を容易に行えることになる。 Thus, when the generator and the traveling motor are a unit in which the housing of the generator and the housing of the traveling motor are integrated, the generator and the traveling motor are used as one device. Will be composed. For this reason, the operation | work which handles a generator and a driving motor, and the operation | work which mounts a generator and a driving motor in a hybrid type electric vehicle can be performed easily.

　なお、ここでいう発電機のハウジングと走行用モータのハウジングとが一体化されているとは、発電機のハウジングと走行用モータのハウジングとがそれぞれ別の部材として形成され、これらのハウジングが結合されていることでもよく、あるいは、１個の部材として形成されているハウジングの一部が発電機のハウジングとなっていて、他の部分が走行用モータのハウジングとなっていることでもよい。 Note that the generator housing and the traction motor housing are integrated with each other when the generator housing and the traction motor housing are formed as separate members. Alternatively, a part of the housing formed as one member may be a generator housing and the other part may be a traveling motor housing.

　また、エンジンを横置き型エンジンとした場合には、前記変速装置を、走行用モータと発電機との間に配置してもよい。 Further, when the engine is a horizontal engine, the transmission may be disposed between the traveling motor and the generator.

　さらに、走行用モータからの駆動力を前記差動装置により左右の駆動輪に所定どおり分配し、これらの駆動輪を駆動させるためには、この差動装置を、左右の駆動輪の間の中央位置又は中央位置近辺に配置することが好ましい。 Further, in order to distribute the driving force from the traveling motor to the left and right drive wheels as prescribed by the differential device, and to drive these drive wheels, this differential device is connected to the center between the left and right drive wheels. It is preferable to arrange in the vicinity of the position or the center position.

　また、本発明は、新たに製造される新車に適用できるとともに、エンジン型既存車（エンジン型中古車）を改造した自動車にも適用することができる。 In addition, the present invention can be applied to a newly manufactured new vehicle and also to an automobile obtained by remodeling an existing engine type vehicle (engine type used vehicle).

　すなわち、本発明に係るハイブリッド型電気自動車を、エンジン型既存車を改造した自動車とする場合には、エンジンの動力を左右の駆動輪に伝達するためのトランスミッションが搭載されていたエンジン型既存車が利用される。このエンジン型既存車からトランスミッションが取り外され、このトランスミッションが配置されていたエンジン型既存車のスペースに発電機と走行用モータとが配置される。 That is, when the hybrid electric vehicle according to the present invention is a modified car of an engine type existing vehicle, there is an engine type existing vehicle equipped with a transmission for transmitting engine power to the left and right drive wheels. Used. The transmission is removed from the engine-type existing vehicle, and the generator and the traveling motor are arranged in the space of the engine-type existing vehicle where the transmission is arranged.

　このように本発明は、エンジン型既存車にも適用できる発明になっている。一般のエンジン型既存車では、差動装置が左右の駆動輪の間の中央位置又は中央位置近辺に配置されている。このため、本発明において、上述したように、差動装置が左右の駆動輪の間の中央位置又は中央位置近辺に配置されていると、エンジン型既存車をハイブリッド型電気自動車に改造する際に、この改造作業を、エンジン型既存車の差動装置をそのまま利用して行えることになる。 Thus, the present invention can be applied to engine-type existing vehicles. In a general engine type existing vehicle, the differential device is disposed at or near the center position between the left and right drive wheels. For this reason, in the present invention, as described above, when the differential gear is arranged at or near the center position between the left and right drive wheels, when remodeling an existing engine type vehicle to a hybrid electric vehicle, This remodeling work can be performed by using the differential of an existing engine type vehicle as it is.

　本発明における走行用モータは、ロータがステータの内側に配置されたインナーロータ方式のモータでもよく、ロータがステータの外側に配置されたアウターロータ方式のモータでもよい。走行用モータをアウターロータ方式のモータとすると、この走行用モータのロータから大きなトルクを出力できることになるため、前記中空の駆動軸により左右の前記駆動輪に伝達することができる駆動トルクを大きくできる。 The traveling motor in the present invention may be an inner rotor type motor in which the rotor is arranged inside the stator, or an outer rotor type motor in which the rotor is arranged outside the stator. When the traveling motor is an outer rotor type motor, a large torque can be output from the rotor of the traveling motor, so that the driving torque that can be transmitted to the left and right driving wheels by the hollow driving shaft can be increased. .

　走行用モータをアウターロータ方式のモータとする場合には、この走行用モータのロータに空冷のための多翼式のファンを設け、走行用モータのハウジングに吸気口及び排気口を設けてもよい。 When the traveling motor is an outer rotor type motor, a multi-blade fan for air cooling may be provided in the rotor of the traveling motor, and an intake port and an exhaust port may be provided in the housing of the traveling motor. .

　また、発電機も、ロータがステータの内側に配置されたインナーロータ方式の発電機でもよく、ロータがステータの外側に配置されたアウターロータ方式の発電機でもよい。発電機をアウターロータ方式の発電機とする場合には、この発電機のロータに空冷のための多翼式のファンを設け、発電機のハウジングに吸気口及び排気口を設けてもよい。 Also, the generator may be an inner rotor type generator in which the rotor is arranged inside the stator, or may be an outer rotor type generator in which the rotor is arranged outside the stator. When the generator is an outer rotor type generator, a multiblade fan for air cooling may be provided in the rotor of the generator, and an intake port and an exhaust port may be provided in the generator housing.

　また、走行用モータをアウターロータ方式のモータとする場合には、この走行用モータのステータの中心部に、前記連結軸が内部に挿通された中空の非回転軸を配置し、この非回転軸と走行用モータのハウジングとを、非回転軸に走行用モータのハウジングまで達して設けられている連結部を介して連結し、この連結を、連結部における前記ハウジング側の端部と、このハウジングの内面とのうち、一方に設けられた凸部を他方に設けられた凹部に非回転軸の軸方向へ嵌合することにより行うようにしてもよい。 Further, when the traveling motor is an outer rotor type motor, a hollow non-rotating shaft into which the connecting shaft is inserted is arranged at the center of the stator of the traveling motor. And the housing of the traveling motor are connected to each other via a connecting portion provided to reach the housing of the traveling motor on the non-rotating shaft. It is also possible to perform this by fitting a convex portion provided on one of the inner surfaces of the inner surface and a concave portion provided on the other in the axial direction of the non-rotating shaft.

　これによると、凸部を凹部に非回転軸の軸方向へ嵌合するという簡単な構造及び作業により、非回転軸と走行用モータのハウジングとを前記連結部を介して連結できることになる。 According to this, the non-rotating shaft and the housing of the motor for traveling can be connected via the connecting portion by a simple structure and operation of fitting the convex portion to the concave portion in the axial direction of the non-rotating shaft.

　また、前記凸部には、非回転軸を走行用モータのハウジングにフローティング支持状態とするための弾性部材を配置してもよい。 Further, an elastic member for placing the non-rotating shaft in a floating support state on the housing of the traveling motor may be disposed on the convex portion.

　これによると、非回転軸に作用する走行用モータのトルクや外力を弾性部材により緩和することができるため、これらのトルクや外力が、非回転軸及びこの非回転軸の内部に挿通されている前記連結軸に影響することを抑制することができる。 According to this, since the torque and external force of the traveling motor acting on the non-rotating shaft can be relaxed by the elastic member, these torque and external force are inserted into the non-rotating shaft and the inside of the non-rotating shaft. The influence on the connecting shaft can be suppressed.

　さらに、発電機を、上述したアウターロータ方式の発電機とする場合には、非回転軸を発電機のステータの中心部まで延出させることにより、この非回転軸を発電機のステータの中心部にも配置された非回転軸とするとともに、発電機のハウジングと走行用モータのハウジングとを一体化してもよい。 Furthermore, when the generator is the above-described outer rotor type generator, the non-rotating shaft is extended to the central portion of the stator of the generator so that the non-rotating shaft becomes the central portion of the stator of the generator. The generator housing and the travel motor housing may be integrated with each other as well as the non-rotating shaft.

　これによると、非回転軸と走行用モータのハウジングとを前記連結部を介して連結する作業を行うと、発電機のステータを所定位置に配置するための作業と、走行用モータのステータを所定位置に配置する作業とを同時に行えることになり、作業の簡単化を達成できることになる。 According to this, when the operation of connecting the non-rotating shaft and the housing of the traveling motor via the connecting portion is performed, the operation for arranging the stator of the generator at a predetermined position and the stator of the traveling motor are predetermined. It is possible to simultaneously perform the operation of arranging the position, and the simplification of the operation can be achieved.

　以上説明した本発明は、エンジンが前部に配置されて左右の前輪が駆動されるフロントエンジン、フロントドライブの自動車に適用できるとともに、エンジンが後部に配置されて左右の後輪が駆動されるリアエンジン、リアドライブの自動車にも適用でき、また、前部又は後部に配置されたエンジンにより四輪の全部が駆動される四輪駆動の自動車にも適用できる。 The present invention described above can be applied to a front engine in which the engine is disposed in the front and the left and right front wheels are driven, and a front drive automobile, and the rear in which the engine is disposed in the rear and the left and right rear wheels are driven. The present invention can also be applied to an engine and a rear drive vehicle, and can also be applied to a four-wheel drive vehicle in which all four wheels are driven by an engine arranged at the front or rear.

　本発明によると、走行用モータから駆動輪に大きな駆動力を伝達できるとともに、駆動機構の軽量化を図ることができ、発電動力機構の小型化も図ることができるという効果を得られる。 According to the present invention, it is possible to transmit a large driving force from the traveling motor to the driving wheel, to reduce the weight of the driving mechanism, and to reduce the size of the power generation mechanism.

図１は、本発明の第１実施形態に係るハイブリッド型電気自動車についての機械系と電気系の構成を示す概略図である。FIG. 1 is a schematic diagram showing the configuration of a mechanical system and an electrical system for a hybrid electric vehicle according to a first embodiment of the present invention. 図２は、本発明の第２実施形態に係るハイブリッド型電気自動車を示す図１と同様の図である。FIG. 2 is a view similar to FIG. 1 showing a hybrid electric vehicle according to the second embodiment of the present invention. 図３は、本発明の第３実施形態に係るハイブリッド型電気自動車を示す図１と同様の図である。FIG. 3 is a view similar to FIG. 1 showing a hybrid electric vehicle according to a third embodiment of the present invention. 図４は、本発明の第４別実施形態に係るハイブリッド型電気自動車を示す図１と同様の図である。FIG. 4 is a view similar to FIG. 1 showing a hybrid electric vehicle according to a fourth alternative embodiment of the present invention. 図５は、図４のＳ５－Ｓ５線断面図である。FIG. 5 is a cross-sectional view taken along line S5-S5 of FIG.

　１，３１，５１　エンジン
　１Ａ，３１Ａ，５１Ａ　エンジンの出力軸であるクランク軸
　２，３２，５２，８２　発電機
　２Ａ，３２Ａ，５２Ａ，８２Ａ　発電機のロータ
　２Ｂ，３２Ｂ，５２Ｂ，８２Ｂ　発電機のステータ
　３，４　駆動輪である前輪
　５，３５，５５，８５　走行用モータ
　５Ａ，３５Ａ，５５Ａ，８５Ａ　走行用モータのロータ
　５Ｂ，３５Ｂ，５５Ｂ，８５Ｂ　走行用モータのステータ
　６，３６，５６，８６　発電機のハウジング
　７，３７，５７，８７　走行用モータのハウジング
　９，３９，５９，８９　中空軸となっている駆動軸
　１０　差動装置
　１１，４１，６１　駆動機構用の変速装置
　１３，４３，６３，９３　連結軸
　７０，７１，１０１　非回転軸
　７０Ａ，７１Ａ，１０１Ａ　連結部
　７２，７４，１０２，１０４　多翼式のファン
　７３Ａ，７５Ａ，１０３Ａ，１０５Ａ　吸気口
　７３Ｂ，７５Ｂ，１０３Ｂ，１０５Ｂ　排気口
　１１１　凸部
　１１１Ａ　弾性部材であるゴム
　１１２　凹部 1,31,51 Engine 1A, 31A, 51A Engine output shaft Crankshaft 2,32,52,82 Generator 2A, 32A, 52A, 82A Generator rotor 2B, 32B, 52B, 82B Generator stator 3,4 Front wheels as drive wheels 5,35,55,85 Traveling motors 5A, 35A, 55A, 85A Traveling motor rotors 5B, 35B, 55B, 85B Traveling motor stators 6, 36, 56, 86 Power generation Machine housing 7, 37, 57, 87 travel motor housing 9, 39, 59, 89 hollow shaft drive shaft 10 differential device 11, 41, 61 drive mechanism transmission 13, 43, 63 , 93 Connecting shaft 70, 71, 101 Non-rotating shaft 70A, 71A, 101A Connecting portion 72, 74, 102, 104 Multi-blade fan 73A 75A, 103A, 105A inlet 73B, 75B, 103B, rubber 112 recess is 105B exhaust port 111 protrusions 111A elastic member

　以下に本発明を実施するための形態を図面に基づいて説明する。図１には、本発明の第１実施形態に係るハイブリッド型電気自動車についての機械系と電気系の構成が、概念図として示されている。 Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings. FIG. 1 is a conceptual diagram showing the configuration of a mechanical system and an electrical system for a hybrid electric vehicle according to a first embodiment of the present invention.

　このハイブリッド型電気自動車には、エンジン（内燃機関）１と、このエンジン１からの動力で発電する発電機２と、この発電機２で発電された電気が供給され、左右の駆動輪となっている左右の前輪３，４を駆動させるための走行用モータ５と、が搭載されている。これらのエンジン１と発電機２と走行用モータ５は、車室内よりも前側に設けられているエンジン室に配置されている。したがって、この実施形態に係る自動車は、エンジン１が前部に配置されて前輪３，４が駆動されるフロントエンジン、フロントドライブの自動車になっている。また、発電機２と走行用モータ５は、エンジン１の出力軸となっているクランク軸１Ａの軸線延長方向の位置に配置されており、このエンジン１は、クランク軸１Ａの軸方向が左右方向となった横置き型エンジンになっているため、エンジン１と発電機２と走行用モータ５は、前記エンジン室において、左右方向に並べられている。 The hybrid electric vehicle is supplied with an engine (internal combustion engine) 1, a generator 2 that generates power using the power from the engine 1, and electricity generated by the generator 2, thereby forming left and right drive wheels. A traveling motor 5 for driving the left and right front wheels 3 and 4 is mounted. The engine 1, the generator 2, and the traveling motor 5 are disposed in an engine room provided in front of the vehicle interior. Therefore, the vehicle according to this embodiment is a front engine or front drive vehicle in which the engine 1 is disposed in the front and the front wheels 3 and 4 are driven. Further, the generator 2 and the traveling motor 5 are disposed at a position in the axial direction of the crankshaft 1A that is an output shaft of the engine 1, and the engine 1 has an axial direction of the crankshaft 1A in the left-right direction. Therefore, the engine 1, the generator 2, and the traveling motor 5 are arranged in the left-right direction in the engine room.

　発電機２は、ロータ２Ａがステータ２Ｂの内側に配置されたインナーロータ方式の発電機になっており、走行用モータ５も、ロータ５Ａがステータ５Ｂの内側に配置されたインナーロータ方式のモータになっている。このため、発電機２のステータ２Ｂは、発電機２のハウジング６に取り付けられ、走行用モータ５のステータ５Ｂは、走行用モータ５のハウジング７に取り付けられている。本実施形態では、発電機２のハウジング６と走行用モータ５のハウジング７は一体化されており、本実施形態では、これらのハウジング６と７の一体化のために、１個の部材として形成された大きなハウジングの左右両側の部分のうち、一方の部分を発電機２のハウジング６とするとともに、他方の部分を走行用モータ５のハウジング７としている。 The generator 2 is an inner rotor type generator in which the rotor 2A is arranged inside the stator 2B, and the traveling motor 5 is also an inner rotor type motor in which the rotor 5A is arranged inside the stator 5B. It has become. For this reason, the stator 2 </ b> B of the generator 2 is attached to the housing 6 of the generator 2, and the stator 5 </ b> B of the traveling motor 5 is attached to the housing 7 of the traveling motor 5. In the present embodiment, the housing 6 of the generator 2 and the housing 7 of the traveling motor 5 are integrated. In this embodiment, the housing 6 and the housing 7 are integrated as a single member. Of the left and right side portions of the large housing, one portion is the housing 6 of the generator 2 and the other portion is the housing 7 of the traveling motor 5.

　なお、発電機２のハウジング６と走行用モータ５のハウジング７とを一体化するためには、これらのハウジング６，７をそれぞれ別部材として形成し、これらの別部材同士を結合することにより一体化してもよい。 In order to integrate the housing 6 of the generator 2 and the housing 7 of the traveling motor 5, these housings 6 and 7 are formed as separate members, and these separate members are joined together. May be used.

　走行用モータ５は、エンジン１と発電機２との間に配置されている。走行用モータ５のロータ５Ａには、このロータ５Ａの回転力を左右の前輪３，４に伝達するための駆動軸９が結合され、走行用モータ５からエンジン１側へ延びているこの駆動軸９は、中空軸になっている。駆動軸９と、走行用モータ５からの駆動力を左右の前輪３，４に分配する差動装置１０とは、駆動機構用の変速装置１１を介して接続されており、この変速装置１１は、エンジン１と走行用モータ５との間に配置されている。また、差動装置１０は、左右の前輪３，４の間の中央位置又は中央位置近辺に配置されている。 The traveling motor 5 is disposed between the engine 1 and the generator 2. A drive shaft 9 for transmitting the rotational force of the rotor 5A to the left and right front wheels 3 and 4 is coupled to the rotor 5A of the travel motor 5 and extends from the travel motor 5 to the engine 1 side. 9 is a hollow shaft. The drive shaft 9 and the differential device 10 that distributes the driving force from the traveling motor 5 to the left and right front wheels 3 and 4 are connected via a transmission 11 for the drive mechanism. These are disposed between the engine 1 and the traveling motor 5. Further, the differential device 10 is arranged at or near the center position between the left and right front wheels 3 and 4.

　以上の駆動軸９や変速装置１１により、走行用モータ５の駆動力を左右の前輪３，４に伝達するための駆動機構が構成され、この駆動機構には、図示されていないクラッチ等の必要とされる機器を設けてもよい。また、変速装置１１は、無段式又は多段式の変速装置でもよい。 The drive shaft 9 and the transmission 11 described above constitute a drive mechanism for transmitting the driving force of the traveling motor 5 to the left and right front wheels 3, 4. This drive mechanism requires a clutch (not shown) or the like. A device may be provided. The transmission 11 may be a continuously variable transmission or a multistage transmission.

　エンジン１のクランク軸１Ａには、発電動力機構用の変速装置１２を介して連結軸１３が接続されている。走行用モータ５及び発電機２の側へ延びているこの連結軸１３は、中空軸となっている駆動軸９の内部に挿通され、そして、この連結軸１３に、発電機２のロータ２Ａが結合されている。連結軸１３はベアリング１４，１５で回転自在に支持され、駆動軸９は連結軸１３にベアリング１６，１７で回転自在に支持されている。 A connecting shaft 13 is connected to the crankshaft 1A of the engine 1 via a transmission 12 for a power generation power mechanism. The connecting shaft 13 extending to the traveling motor 5 and the generator 2 side is inserted into the drive shaft 9 which is a hollow shaft, and the rotor 2A of the generator 2 is connected to the connecting shaft 13. Are combined. The connecting shaft 13 is rotatably supported by bearings 14 and 15, and the drive shaft 9 is rotatably supported by the connecting shaft 13 by bearings 16 and 17.

　変速装置１２と連結軸１３により、エンジン１の動力を発電機２に伝達して発電するための発電動力機構が構成されている。 The transmission 12 and the connecting shaft 13 constitute a power generation power mechanism for transmitting power from the engine 1 to the generator 2 to generate power.

　エンジン１が始動し、このエンジン１の動力が発電機２に伝達されることにより、発電機２は発電し、発電された電気は、発電機２の端子２Ｃ及びインバータ１８を介してバッテリ１９に充電される。走行用モータ５は、バッテリ１９からインバータ１８及び走行用モータ５の端子５Ｃを介して供給される電気により駆動され、この駆動力が、上述の駆動機構と差動装置１０を介して左右の前輪３，４に伝達されることにより、本実施形態に係る自動車は走行する。 When the engine 1 is started and the power of the engine 1 is transmitted to the generator 2, the generator 2 generates power, and the generated electricity is sent to the battery 19 via the terminal 2 </ b> C of the generator 2 and the inverter 18. Charged. The traveling motor 5 is driven by electricity supplied from the battery 19 via the inverter 18 and the terminal 5C of the traveling motor 5, and this driving force is applied to the left and right front wheels via the driving mechanism and the differential device 10 described above. By being transmitted to 3 and 4, the vehicle according to the present embodiment travels.

　エンジン１の動力で発電機２が発電しているときに自動車が前進走行する場合において、中空の駆動軸９の回転方向と、この駆動軸９の内部に挿通されている連結軸１３の回転方向は、同じになっている。 When the automobile travels forward when the generator 2 is generating power with the power of the engine 1, the rotation direction of the hollow drive shaft 9 and the rotation direction of the connecting shaft 13 inserted into the drive shaft 9 Is the same.

　なお、発電機２は、エンジン１を始動させるための始動用モータにもなっており、このエンジン１の始動時には、バッテリ１９からインバータ１８を介して電気が発電機２に供給される。また、走行中の自動車が減速するときには、走行用モータ５が発電機となる。すなわち、自動車の走行速度を減速させる回生ブレーキにより、走行用モータ５は発電し、この発電で発生した電気は、走行用モータ５の端子５Ｃ及びインバータ１８を介してバッテリ１９に充電される。 The generator 2 also serves as a starter motor for starting the engine 1, and when the engine 1 is started, electricity is supplied from the battery 19 to the generator 2 via the inverter 18. Further, when the traveling automobile decelerates, the traveling motor 5 becomes a generator. That is, the traveling motor 5 generates power by the regenerative brake that reduces the traveling speed of the automobile, and the electricity generated by the power generation is charged to the battery 19 via the terminal 5C of the traveling motor 5 and the inverter 18.

　また、発電機２のハウジング６と走行用モータ５のハウジング７の内部には、発電機２と走行用モータ５から発生する熱を冷却するための冷却水を流通させる冷却水通路２２が形成されている。 In addition, a cooling water passage 22 is formed in the housing 6 of the generator 2 and the housing 7 of the traveling motor 5 for circulating cooling water for cooling the heat generated from the generator 2 and the traveling motor 5. ing.

　図１に示されているように、発電機２と走行用モータ５とは、互いに左右方向に隣接して配置されている。このため、前述したように、発電機２のハウジング６と走行用モータ５のハウジング７とを一体化することができる。したがって、これらの発電機２と走行用モータ５は、１個のユニットとして構成されており、このため、発電機２と走行用モータ５は、全体で１個の装置となっている。 As shown in FIG. 1, the generator 2 and the traveling motor 5 are disposed adjacent to each other in the left-right direction. For this reason, as described above, the housing 6 of the generator 2 and the housing 7 of the traveling motor 5 can be integrated. Therefore, the generator 2 and the traveling motor 5 are configured as a single unit. For this reason, the generator 2 and the traveling motor 5 constitute a single device as a whole.

　以上説明した本実施形態に係るハイブリッド型電気自動車では、走行用モータ５のロータ５Ａに結合されていて、このロータ５Ａの回転力で左右の前輪３，４を駆動させるための駆動軸９は、中空軸になっているため、この駆動軸９の直径を大きくできることになる。このため、走行用モータ５から左右の前輪３，４に大きな駆動力を伝達できる。また、その一方で、この駆動軸９は中空軸であるため、駆動軸９は大重量物にならず、このため、走行用モータ５の駆動力を前輪３，４に伝達するための駆動機構を軽量化することができる。 In the hybrid electric vehicle according to the present embodiment described above, the drive shaft 9 that is coupled to the rotor 5A of the traveling motor 5 and drives the left and right front wheels 3, 4 with the rotational force of the rotor 5A is as follows. Since it is a hollow shaft, the diameter of the drive shaft 9 can be increased. Therefore, a large driving force can be transmitted from the traveling motor 5 to the left and right front wheels 3 and 4. On the other hand, since the drive shaft 9 is a hollow shaft, the drive shaft 9 does not become heavy, and therefore, a drive mechanism for transmitting the drive force of the traveling motor 5 to the front wheels 3 and 4. Can be reduced in weight.

　さらに、本実施形態に係るハイブリッド型電気自動車では、エンジン１のクランク軸１Ａの軸線延長方向の位置に発電機２と走行用モータ５とが配置されていて、この走行用モータ５がエンジン１と発電機２との間に配置されており、エンジン１のクランク軸１Ａと発電機２とを連結するための連結軸１３は中空軸となっている駆動軸９の内部に挿通されている。このため、エンジン１の動力を発電機２に伝達して発電するための発電動力機構が走行用モータ５を迂回した経路で形成されておらず、この経路は、エンジン１と発電機２とを短い距離で繋いだ経路となっている。このため、前記発電動力機構を構成部材点数が少ないシンプルのものにでき、この発電動力機構の全体を小型化することができる。 Furthermore, in the hybrid electric vehicle according to the present embodiment, the generator 2 and the traveling motor 5 are disposed at a position in the axial direction of the crankshaft 1 </ b> A of the engine 1, and the traveling motor 5 is connected to the engine 1. The connecting shaft 13 that is disposed between the generator 2 and connects the crankshaft 1A of the engine 1 and the generator 2 is inserted into the drive shaft 9 that is a hollow shaft. For this reason, the power generation mechanism for transmitting the power of the engine 1 to the generator 2 to generate power is not formed by a path that bypasses the traveling motor 5, and this path connects the engine 1 and the generator 2. The route is connected at a short distance. For this reason, the said power generation power mechanism can be made into a simple thing with few constituent members, and the whole power generation power mechanism can be reduced in size.

　また、自動車を前進走行させるための駆動軸９の回転方向は、この前進走行時に発電機２に発電させるための連結軸１３の回転方向と同じ方向になっている。このため、駆動軸９を連結軸１３に回転自在に支持させるためのベアリング１６，１７を、回転数の許容限界値が小さいベアリングとすることができる。このため、ベアリング１６，１７の低コスト化を図ることができ、また、走行用モータ５のロータ５Ａの高速回転化を図ることができ、さらに、ベアリング１６，１７の熱となってしまうエネルギ損失を少なくできるため、走行用モータ５から左右の前輪３，４に伝達される駆動力の伝達効率を向上させることができる。 Further, the rotational direction of the drive shaft 9 for causing the automobile to travel forward is the same as the rotational direction of the connecting shaft 13 for causing the generator 2 to generate power during forward traveling. For this reason, the bearings 16 and 17 for rotatably supporting the drive shaft 9 on the connecting shaft 13 can be made bearings having a small allowable limit value of the rotational speed. For this reason, it is possible to reduce the cost of the bearings 16 and 17, to increase the speed of the rotor 5 </ b> A of the traveling motor 5, and to reduce the energy loss that becomes the heat of the bearings 16 and 17. Therefore, the transmission efficiency of the driving force transmitted from the traveling motor 5 to the left and right front wheels 3 and 4 can be improved.

　また、発電機２と走行用モータ５とが互いに隣接して配置され、これらの発電機２と走行用モータ５が、発電機２のハウジング６と走行用モータ５のハウジング７とが一体化されたユニットとなっているため、これらの発電機２と走行用モータ５は、１個の装置として構成されることになる。このため、発電機２及び走行用モータ５を取り扱う作業や、ハイブリッド型電気自動車に発電機２及び走行用モータ５を搭載する作業を容易に行えることになる。 The generator 2 and the traveling motor 5 are disposed adjacent to each other, and the generator 2 and the traveling motor 5 are integrated with the housing 6 of the generator 2 and the housing 7 of the traveling motor 5. Therefore, the generator 2 and the traveling motor 5 are configured as a single device. For this reason, the operation | work which handles the generator 2 and the motor 5 for driving | running | working, and the operation | work which mounts the generator 2 and the motor 5 for driving | running | working in a hybrid type electric vehicle can be performed easily.

　さらに、左右の前輪３，４に駆動力を分配するための差動装置１０は、これらの前輪３，４の間の中央位置又は中央位置近辺に配置されており、この配置位置は、エンジン型自動車における差動装置の配置位置と同じである。このため、本実施形態に係る自動車を、エンジン型既存車（エンジン型中古車）を改造した自動車とすることができる。 Further, the differential device 10 for distributing the driving force to the left and right front wheels 3 and 4 is disposed at a central position between these front wheels 3 and 4 or in the vicinity of the central position. It is the same as the position of the differential device in the automobile. For this reason, the car which concerns on this embodiment can be made into the car which modified the engine type existing vehicle (engine type used car).

　すなわち、本実施形態に係るハイブリッド型電気自動車を、エンジン型既存車を改造した自動車とする場合には、エンジン１の動力を左右の前輪３，４に伝達するためのトランスミッションが搭載されていたエンジン型既存車についての改造が行われ、この改造は、エンジン型既存車からトランスミッションが取り外され、このトランスミッションが配置されていたエンジン型既存車のスペースに発電機２と走行用モータ５とが配置される。また、エンジン１と差動装置１０は、エンジン型既存車に搭載されていたエンジンと差動装置がそのまま用いられ、前述した駆動機構用の変速装置１１や発電動力機構用の変速装置１２、バッテリ１９等の電気機器は、ハイブリッド型電気自動車に新しく装備される。 That is, when the hybrid electric vehicle according to the present embodiment is a vehicle obtained by modifying an existing engine type vehicle, an engine in which a transmission for transmitting the power of the engine 1 to the left and right front wheels 3 and 4 is mounted. The existing model is remodeled, and this modification is done by removing the transmission from the engine type existing car and placing the generator 2 and the traveling motor 5 in the space of the existing engine type car where the transmission was located. The Further, the engine 1 and the differential device 10 are the same as the engine and the differential device mounted on the engine type existing vehicle, and the transmission 11 for the drive mechanism, the transmission 12 for the power generation mechanism, and the battery described above. Electrical equipment such as 19 is newly installed in a hybrid electric vehicle.

　次に、本発明に係る別実施形態に係るハイブリッド型電気自動車について説明する。以下の別実施形態の説明では、図１で示した第１実施形態のハイブリッド型電気自動車の部材、装置等と同じ部材、装置等には、同一符号を用いることとする。 Next, a hybrid electric vehicle according to another embodiment of the present invention will be described. In the following description of another embodiment, the same reference numerals are used for the same members and devices as those of the hybrid electric vehicle of the first embodiment shown in FIG.

　図２は、第２実施形態に係るハイブリッド型電気自動車を示す。この実施形態でも、エンジン３１は、このエンジン３１の出力軸となっているクランク軸３１Ａの軸方向が左右方向となった横置き型エンジンになっているとともに、発電機３２と走行用モータ３５は、クランク軸３１Ａの軸線延長方向の位置に配置されている。また、この実施形態の発電機３２も、ロータ３２Ａがステータ３２Ｂの内側に配置されたインナーロータ方式の発電機になっており、走行用モータ３５も、ロータ３５Ａがステータ３５Ｂの内側に配置されたインナーロータ方式のモータになっている。このため、発電機３２のステータ３２Ｂは、発電機３２のハウジング３６に取り付けられ、走行用モータ３５のステータ３５Ｂは、走行用モータ５のハウジング３７に取り付けられている。本実施形態の発電機３２のハウジング３６と走行用モータ３５のハウジング３７は、それぞれ別部材として形成され、これらのハウジング３６と３７は、一体化されている。 FIG. 2 shows a hybrid electric vehicle according to the second embodiment. Also in this embodiment, the engine 31 is a horizontal engine in which the axial direction of the crankshaft 31A that is the output shaft of the engine 31 is the left-right direction, and the generator 32 and the travel motor 35 are The crankshaft 31A is disposed at a position in the axial extension direction. Further, the generator 32 of this embodiment is also an inner rotor type generator in which the rotor 32A is arranged inside the stator 32B, and the traveling motor 35 also has the rotor 35A arranged inside the stator 35B. It is an inner rotor type motor. For this reason, the stator 32 </ b> B of the generator 32 is attached to the housing 36 of the generator 32, and the stator 35 </ b> B of the traveling motor 35 is attached to the housing 37 of the traveling motor 5. The housing 36 of the generator 32 and the housing 37 of the traveling motor 35 of the present embodiment are formed as separate members, and these housings 36 and 37 are integrated.

　走行用モータ３５のロータ３５Ａに結合されていて、このロータ３５Ａの回転力で左右の前輪３，４を駆動させるための駆動軸３９は、中空軸になっている。エンジン３１のクランク軸３１Ａと発電機３２とを連結し、エンジン３１の動力で発電機３２に発電させるための連結軸４３は、中空の駆動軸３９の内部に挿通されている。駆動軸３９は連結軸４３にベアリング４６，４７で回転自在に支持されている。 The drive shaft 39 that is coupled to the rotor 35A of the traveling motor 35 and drives the left and right front wheels 3, 4 by the rotational force of the rotor 35A is a hollow shaft. A connecting shaft 43 for connecting the crankshaft 31 </ b> A of the engine 31 and the generator 32 and causing the generator 32 to generate power with the power of the engine 31 is inserted into the hollow drive shaft 39. The drive shaft 39 is rotatably supported on the connecting shaft 43 by bearings 46 and 47.

　この実施形態のエンジン３１の大きさは、図１のエンジン１よりも小さくなっている。すなわち、図２の実施形態は、エンジンの大きさが小さくなっている場合に適用できる実施形態であり、この実施形態では、走行用モータ３５の駆動力を左右の前輪３，４に伝達するための駆動機構に設けられる変速装置４１は、発電機３２と走行用モータ３５との間に配置される。そして、変速装置４１で変速された走行用モータ５の駆動力は、左右の前輪３，４の間の中央位置又は中央位置近辺に配置された差動装置１０により、これらの前輪３，４に分配される。 The size of the engine 31 of this embodiment is smaller than that of the engine 1 of FIG. That is, the embodiment of FIG. 2 is an embodiment applicable when the size of the engine is small. In this embodiment, the driving force of the traveling motor 35 is transmitted to the left and right front wheels 3, 4. A transmission 41 provided in the drive mechanism is disposed between the generator 32 and the traveling motor 35. The driving force of the traveling motor 5 shifted by the transmission 41 is applied to the front wheels 3 and 4 by the differential device 10 disposed at or near the center position between the left and right front wheels 3 and 4. Distributed.

　この実施形態も、エンジン型既存車の改造により、このエンジン型既存車をハイブリッド型電気自動車とする場合に適用することができる。この改造を行う場合には、図１の実施形態と同様に、エンジン３１の動力を左右の前輪３，４に伝達するためのトランスミッションが搭載されていたエンジン型既存車からトランスミッションが取り外され、このトランスミッションが配置されていたエンジン型既存車のスペースに発電機３２と走行用モータ３５とが配置される。 This embodiment can also be applied to a case where this engine type existing vehicle is a hybrid electric vehicle by remodeling the engine type existing vehicle. In the case of this modification, the transmission is removed from the existing engine type vehicle on which the transmission for transmitting the power of the engine 31 to the left and right front wheels 3 and 4 is mounted, as in the embodiment of FIG. The generator 32 and the traveling motor 35 are disposed in the space of the existing engine type vehicle where the transmission is disposed.

　さらに、この実施形態でも、自動車を前進走行させるための駆動軸３９の回転方向は、この前進走行時に発電機３２に発電させるための連結軸４３の回転方向と同じ方向になっている。また、発電機３２のハウジング３６と走行用モータ３５のハウジング３７の内部には、冷却水通路４２Ａ，４２Ｂが形成されている。 Furthermore, also in this embodiment, the rotational direction of the drive shaft 39 for causing the automobile to travel forward is the same as the rotational direction of the connecting shaft 43 for causing the generator 32 to generate power during forward traveling. Cooling water passages 42 </ b> A and 42 </ b> B are formed inside the housing 36 of the generator 32 and the housing 37 of the traveling motor 35.

　図３は、第３実施形態に係るハイブリッド型電気自動車を示す。この実施形態でも、エンジン５１は、このエンジン５１の出力軸となっているクランク軸５１Ａの軸方向が左右方向となった横置き型エンジンになっているとともに、発電機５２と走行用モータ５５は、クランク軸５１Ａの軸線延長方向の位置に配置されている。 FIG. 3 shows a hybrid electric vehicle according to the third embodiment. Also in this embodiment, the engine 51 is a horizontal engine in which the axial direction of the crankshaft 51A that is the output shaft of the engine 51 is the left-right direction, and the generator 52 and the travel motor 55 are The crankshaft 51A is disposed at a position in the axial extension direction.

　この実施形態の発電機５２は、ロータ５２Ａがステータ５２Ｂの外側に配置されたアウターロータ方式の発電機になっており、走行用モータ５５も、ロータ５５Ａがステータ５５Ｂの外側に配置されたアウターロータ方式のモータになっている。そして、走行用モータ５５のロータ５５Ａには、このロータ５５Ａの回転力を左右の前輪３，４に伝達するための駆動軸５９が、この駆動軸５９のアーム部５９Ａを介して結合されており、走行用モータ５５からエンジン５１側へ延びているこの駆動軸５９は、中空軸になっている。駆動軸５９と、走行用モータ５５からの駆動力を左右の前輪３，４に分配する差動装置１０とは、駆動機構用の変速装置６１を介して接続されており、この変速装置６１は、エンジン５１と走行用モータ５５との間に配置されている。また、差動装置１０は、左右の前輪３，４の間の中央位置又は中央位置近辺に配置されている。 The generator 52 of this embodiment is an outer rotor type generator in which the rotor 52A is disposed outside the stator 52B, and the traveling motor 55 is also an outer rotor in which the rotor 55A is disposed outside the stator 55B. It is a motor of the system. A drive shaft 59 for transmitting the rotational force of the rotor 55A to the left and right front wheels 3 and 4 is coupled to the rotor 55A of the traveling motor 55 via an arm portion 59A of the drive shaft 59. The drive shaft 59 extending from the traveling motor 55 toward the engine 51 is a hollow shaft. The drive shaft 59 and the differential device 10 that distributes the driving force from the traveling motor 55 to the left and right front wheels 3 and 4 are connected via a transmission 61 for the drive mechanism. The engine 51 and the traveling motor 55 are disposed. Further, the differential device 10 is arranged at or near the center position between the left and right front wheels 3 and 4.

　このため、この実施形態も、エンジン型既存車の改造により、このエンジン型既存車をハイブリッド型電気自動車とする場合に適用することができる。 For this reason, this embodiment can also be applied to the case where the engine type existing vehicle is a hybrid electric vehicle by remodeling the engine type existing vehicle.

　エンジン５１のクランク軸５１Ａに発電動力機構用の変速装置６２を介して接続されている連結軸６３は、クランク軸５１Ａと発電機５２とを連結しており、この連結軸６３は、中空軸となっている駆動軸５９の内部に挿通され、駆動軸５９は、ベアリング６６，６７で連結軸６３に回転自在に支持されている。この実施形態でも、自動車を前進走行させるための駆動軸５９の回転方向は、エンジン５１の動力で連結軸６３が回転して発電機５２が発電するときにおける連結軸６３の回転方向と同じ方向になっている。また、発電機５２のロータ５２Ａは、連結軸６３に、この連結軸６３のアーム部６３Ａを介して結合されている。 A connecting shaft 63 connected to the crankshaft 51A of the engine 51 via a transmission 62 for a power generation power mechanism connects the crankshaft 51A and the generator 52, and the connecting shaft 63 is a hollow shaft. The drive shaft 59 is inserted into the drive shaft 59, and the drive shaft 59 is rotatably supported by the coupling shaft 63 by bearings 66 and 67. Also in this embodiment, the rotation direction of the drive shaft 59 for causing the vehicle to travel forward is the same as the rotation direction of the connection shaft 63 when the connection shaft 63 is rotated by the power of the engine 51 and the generator 52 generates power. It has become. Further, the rotor 52A of the generator 52 is coupled to the connecting shaft 63 via an arm portion 63A of the connecting shaft 63.

　発電機５２のステータ５２Ｂの中心部には、このステータ５２Ａが結合された非回転軸７０が配置され、この非回転軸７０と発電機５２のハウジング５６とが、非回転軸７０にハウジング５６まで達して設けられている連結部７０Ａを介して連結されている。また、走行用モータ５５のステータ５５Ｂの中心部には、このステータ５５Ｂが結合された非回転軸７１が配置され、この非回転軸７１と走行用モータ５５のハウジング５７とが、非回転軸７１にハウジング５７まで達して設けられている連結部７１Ａを介して連結されている。中空となっているこれらの非回転軸７０，７１の内部には連結軸６３が挿通され、非回転軸７０，７１は、ベアリング６４，６５により連結軸６３に非回転となって支持されている。また、連結部７０Ａ，７１Ａの内部には、冷却水通路６２Ａ，６２Ｂが形成されている。 A non-rotating shaft 70 to which the stator 52A is coupled is disposed at the center of the stator 52B of the generator 52. The non-rotating shaft 70 and the housing 56 of the generator 52 are connected to the non-rotating shaft 70 up to the housing 56. It is connected via a connecting part 70A provided. A non-rotating shaft 71 to which the stator 55B is coupled is disposed at the center of the stator 55B of the traveling motor 55, and the non-rotating shaft 71 and the housing 57 of the traveling motor 55 are connected to the non-rotating shaft 71. Are connected to each other through a connecting portion 71 </ b> A provided to reach the housing 57. Inside these non-rotating shafts 70 and 71 that are hollow, the connecting shaft 63 is inserted, and the non-rotating shafts 70 and 71 are supported non-rotatingly on the connecting shaft 63 by bearings 64 and 65. . Further, cooling water passages 62A and 62B are formed inside the connecting portions 70A and 71A.

　発電機５２のロータ５２Ａには、多翼式のファン７２が設けられ、発電機５２のハウジング５６には、吸気口７３Ａ及び排気口７３Ｂが設けられている。また、走行用モータ５５のロータ５５Ａにも、多翼式のファン７４が設けられ、走行用モータ５５のハウジング５７にも、吸気口７５Ａ及び排気口７５Ｂが設けられている。この実施形態でも、ハウジング５６と５７は、一体化されている。 The rotor 52A of the generator 52 is provided with a multi-blade fan 72, and the housing 56 of the generator 52 is provided with an intake port 73A and an exhaust port 73B. The rotor 55A of the traveling motor 55 is also provided with a multi-blade fan 74, and the housing 57 of the traveling motor 55 is also provided with an intake port 75A and an exhaust port 75B. Also in this embodiment, the housings 56 and 57 are integrated.

　この実施形態の走行用モータ５５は、前述したように、ステータ５５Ｂの外側にロータ５５Ａが配置されたアウターロータ方式のモータとなっているため、このロータ５５Ａから大きなトルクを出力できる。このため、ロータ５５Ａに結合されている駆動軸５９から左右の前輪３，４に伝達することができる駆動トルクを、図１及び図２の実施形態よりも大きくすることができる。 As described above, the traveling motor 55 of this embodiment is an outer rotor type motor in which the rotor 55A is disposed outside the stator 55B, and thus can output a large torque from the rotor 55A. Therefore, the drive torque that can be transmitted from the drive shaft 59 coupled to the rotor 55A to the left and right front wheels 3 and 4 can be made larger than in the embodiment of FIGS.

　また、発電機５２及び走行用モータ５５のロータ５２Ａ，５５Ａが回転すると、多翼式のファン７２，７４と、ハウジング５６，５７の吸気口７３Ａ，７５Ａ及び排気口７３Ｂ，７５Ｂとにより、発電機５２と走行用モータ５５を空冷するための空気流をハウジング５６，５７の内部に流通させることができる。このため、冷却水通路６２Ａ，６２Ｂに流通する冷却水と共に、発電機５２と走行用モータ５５を有効に冷却することができる。 Further, when the rotors 52A and 55A of the generator 52 and the traveling motor 55 are rotated, the generators are generated by the multiblade fans 72 and 74 and the intake ports 73A and 75A and the exhaust ports 73B and 75B of the housings 56 and 57. An air flow for air-cooling the motor 52 and the traveling motor 55 can be circulated inside the housings 56 and 57. For this reason, the generator 52 and the traveling motor 55 can be effectively cooled together with the cooling water flowing through the cooling water passages 62A and 62B.

　特に、多翼式のファン７２，７４は、非回転軸７０，７１の中心部からの配置位置が遠いために回転速度が速くなっている発電機５２と走行用モータ５５のロータ５２Ａ，５５Ａに設けられているため、空冷効率を向上させることができる。 In particular, the multi-blade fans 72 and 74 are connected to the generator 52 and the rotors 52A and 55A of the traveling motor 55 whose rotational speed is high because the disposition position from the center of the non-rotating shafts 70 and 71 is far. Since it is provided, the air cooling efficiency can be improved.

　図４は、横置き型のエンジン５１を用いた第４実施形態に係るハイブリッド型電気自動車を示す。この実施形態においても、図３の実施形態と同様に、発電機８２は、ロータ８２Ａがステータ８２Ｂの外側に配置されたアウターロータ方式の発電機になっており、走行用モータ８５は、ロータ８５Ａがステータ８５Ｂの外側に配置されたアウターロータ方式のモータになっている。そして、発電機８２のロータ８２Ａには、多翼式のファン１０２が設けられ、発電機８２のハウジング８６には、吸気口１０３Ａ及び排気口１０３Ｂが設けられている。走行用モータ８５のロータ８５Ａにも、多翼式のファン１０４が設けられ、走行用モータ８５のハウジング８７にも、吸気口１０５Ａ及び排気口１０５Ｂが設けられている。 FIG. 4 shows a hybrid electric vehicle according to the fourth embodiment using a horizontally installed engine 51. Also in this embodiment, as in the embodiment of FIG. 3, the generator 82 is an outer rotor type generator in which the rotor 82A is disposed outside the stator 82B, and the traveling motor 85 is the rotor 85A. Is an outer rotor type motor disposed outside the stator 85B. The rotor 82A of the generator 82 is provided with a multi-blade fan 102, and the housing 86 of the generator 82 is provided with an intake port 103A and an exhaust port 103B. The rotor 85A of the traveling motor 85 is also provided with a multi-blade fan 104, and the housing 87 of the traveling motor 85 is also provided with an intake port 105A and an exhaust port 105B.

　また、左右の前輪３，４に変速装置６１及び差動装置１０を介して走行用モータ８５の駆動力を伝達するための中空の駆動軸８９は、走行用モータ８５のロータ８５Ａに、駆動軸８９のアーム部８９Ａを介して結合されている。発電機８２のロータ８２Ａは、エンジン５１のクランク軸５１Ａと発電機８２とを連結するための連結軸９３に、この連結軸９３のアーム部９３Ａを介して結合されている。 A hollow drive shaft 89 for transmitting the driving force of the travel motor 85 to the left and right front wheels 3 and 4 via the transmission 61 and the differential device 10 is connected to the rotor 85A of the travel motor 85 and the drive shaft. It is connected via 89 arm parts 89A. The rotor 82A of the generator 82 is coupled to a connecting shaft 93 for connecting the crankshaft 51A of the engine 51 and the generator 82 via an arm portion 93A of the connecting shaft 93.

　この実施形態において、走行用モータ８５のステータ８５Ｂの中心部に配置されていて、このステータ８５Ｂと結合されている非回転軸１０１は、発電機８２のステータ８２Ｂの中心部まで延びており、このステータ８２Ｂは、非回転軸１０１に結合されている。したがって、この非回転軸１０１は、発電機８２のステータ８２Ｂのための非回転軸にもなっている。非回転軸１０１には、走行用モータ８５のハウジング８７まで達している連結部１０１Ａが設けられ、この連結部１０１Ａはハウジング８７に連結されている。 In this embodiment, the non-rotating shaft 101 disposed at the center of the stator 85B of the traveling motor 85 and coupled to the stator 85B extends to the center of the stator 82B of the generator 82. The stator 82B is coupled to the non-rotating shaft 101. Therefore, the non-rotating shaft 101 is also a non-rotating shaft for the stator 82B of the generator 82. The non-rotating shaft 101 is provided with a connecting portion 101 A that reaches the housing 87 of the traveling motor 85, and the connecting portion 101 A is connected to the housing 87.

　また、発電機８２のハウジング８６と走行用モータ８５のハウジング８７は、一体化されている。この実施形態におけるハウジング８６と８７の一体化は、それぞれのハウジング８６，８７を別部材とし、これらの別部材を結合することにより行われている。しかし、この実施形態でも、上記一体化を、図１の実施形態と同様に、１個の部材として形成された大きなハウジングの左右両側の部分のうち、一方の部分を発電機８２のハウジングとし、他方の部分を走行用モータ８５のハウジングとして行ってもよい。 The housing 86 of the generator 82 and the housing 87 of the traveling motor 85 are integrated. The integration of the housings 86 and 87 in this embodiment is performed by using the respective housings 86 and 87 as separate members and connecting these separate members. However, in this embodiment as well, as in the embodiment of FIG. 1, the integration is performed by using one of the left and right sides of the large housing formed as one member as the housing of the generator 82. The other part may be used as the housing of the traveling motor 85.

　連結軸９３は、中空の駆動軸８９の内部に挿通され、駆動軸８９は、ベアリング９６，９７で連結軸９３に回転自在に支持されている。また、連結軸９３は、中空となっている非回転軸１０１の内部にも挿通され、非回転軸１０１は、ベアリング９４，９５で連結軸６３に非回転となって支持されている。また、連結部１０１Ａの内部には、冷却水通路９２が形成されている。 The connecting shaft 93 is inserted into a hollow driving shaft 89, and the driving shaft 89 is rotatably supported by the connecting shaft 93 by bearings 96 and 97. The connecting shaft 93 is also inserted into the hollow non-rotating shaft 101, and the non-rotating shaft 101 is supported non-rotatingly on the connecting shaft 63 by bearings 94 and 95. Further, a cooling water passage 92 is formed inside the connecting portion 101A.

　この実施形態でも、自動車を前進走行させるための駆動軸８９の回転方向は、この前進走行時に発電機８２に発電させるための連結軸９３の回転方向と同じ方向になっている。 Also in this embodiment, the rotational direction of the drive shaft 89 for causing the automobile to travel forward is the same as the rotational direction of the connecting shaft 93 for causing the generator 82 to generate power during forward traveling.

　この実施形態では、非回転軸１０１は、発電機８２と走行用モーター８５の両方のための非回転軸になっているとともに、ハウジング８６と８７は一体化されているため、非回転軸１０１の連結部１０１Ａを走行用モータ８５のハウジング８７に連結するための作業を行うと、この作業は、発電機８２のステータ８２Ｂを所定位置に配置するための作業と、走行用モータ８５のステータ８５Ｂを所定位置に配置する作業とを同時に行うための作業になる。このため、これらの作業を容易かつ短時間で行えることになる。 In this embodiment, the non-rotating shaft 101 is a non-rotating shaft for both the generator 82 and the traveling motor 85 and the housings 86 and 87 are integrated. When the operation for connecting the connecting portion 101A to the housing 87 of the traveling motor 85 is performed, this operation includes the operation for arranging the stator 82B of the generator 82 at a predetermined position and the stator 85B of the traveling motor 85. This is an operation for simultaneously performing the operation of arranging at a predetermined position. For this reason, these operations can be performed easily and in a short time.

　すなわち、図３の実施形態において、発電機５２のステータ５２Ｂを所定位置に配置するためには、非回転軸７０の連結部７０Ａを発電機５２のハウジング５６に連結し、走行用モータ５５のステータ５５Ｂを所定位置に配置するためには、非回転軸７１の連結部７１Ａを走行用モータ５５のハウジング５７に連結することになる。しかし、図４の実施形態では、連結部１０１Ａを走行用モータ８５のハウジング８７に連結すると、発電機８２のステータ８２Ｂと走行用モータ８５のステータ８５Ｂとを同時に所定位置に配置することができる。 That is, in the embodiment of FIG. 3, in order to arrange the stator 52B of the generator 52 at a predetermined position, the connecting portion 70A of the non-rotating shaft 70 is connected to the housing 56 of the generator 52, and the stator of the traveling motor 55 is connected. In order to arrange 55B at a predetermined position, the connecting portion 71A of the non-rotating shaft 71 is connected to the housing 57 of the traveling motor 55. However, in the embodiment of FIG. 4, when the connecting portion 101A is connected to the housing 87 of the traveling motor 85, the stator 82B of the generator 82 and the stator 85B of the traveling motor 85 can be simultaneously disposed at predetermined positions.

　連結部１０１Ａを走行用モータ８５のハウジング８７に連結するためには、ボルト、ナット等の連結具を用いてもよい。しかし、連結部１０１Ａを走行用モータ８５のハウジング８７に連結するための本実施形態に係る構造は、図５で示したものとなっている。 In order to connect the connecting portion 101A to the housing 87 of the traveling motor 85, connecting tools such as bolts and nuts may be used. However, the structure according to this embodiment for connecting the connecting portion 101A to the housing 87 of the traveling motor 85 is as shown in FIG.

　図５は、図４のＳ５－Ｓ５線断面図である。連結部１０１Ａは、連結部１０１Ａの本体１１０と、この本体１１０の外周部に、円周方向に等間隔で複数個形成された凸部１１１とからなる。これらの凸部１１１は、連結部１０１Ａにおける走行用モータ８５のハウジング８７側の端部となっている。ハウジング８７の内面には、それぞれの凸部１１１と対応する位置において、凸部１１１と同数の凹部１１２が形成されている。これらの凹部１１２の形状は、凸部１１１の形状と対応している。 FIG. 5 is a cross-sectional view taken along line S5-S5 of FIG. 101 A of connecting parts consist of the main body 110 of 101 A of connecting parts, and the convex part 111 formed in the outer peripheral part of this main body 110 by multiple numbers at equal intervals in the circumferential direction. These convex portions 111 are end portions on the housing 87 side of the traveling motor 85 in the connecting portion 101A. On the inner surface of the housing 87, the same number of concave portions 112 as the convex portions 111 are formed at positions corresponding to the respective convex portions 111. The shape of these concave portions 112 corresponds to the shape of the convex portions 111.

　それぞれの凸部１１１は、弾性部材であるゴム１１１Ａで形成された基部と、厚板１１１Ｂで形成された先端部とからなり、ゴム１１１Ａは、本体１１０と厚板１１１Ｂとに溶着又は接着により結合されている。 Each convex portion 111 is composed of a base portion made of rubber 111A, which is an elastic member, and a tip portion made of a thick plate 111B. The rubber 111A is bonded to the main body 110 and the thick plate 111B by welding or bonding. Has been.

　連結部１０１Ａを走行用モータ８５のハウジング８７に連結するための作業は、連結部１０１Ａの凸部１１１を、ハウジング８７の凹部１１２に、非回転軸１０１の軸方向へ嵌合することにより行われる。この嵌合作業を行うだけにより、連結部１０１Ａをハウジング８７に連結することができるため、この連結構造及び連結作業の簡単化を図ることができる。 The operation for connecting the connecting portion 101A to the housing 87 of the traveling motor 85 is performed by fitting the convex portion 111 of the connecting portion 101A into the concave portion 112 of the housing 87 in the axial direction of the non-rotating shaft 101. . Since the connecting portion 101A can be connected to the housing 87 only by performing the fitting operation, the connecting structure and the connecting operation can be simplified.

　また、凸部１１１には、振動や衝撃を吸収する弾性部材となっているゴム１１１Ａが配置されているため、非回転軸１０１及びこの非回転軸１０１の内部に挿通されている連結軸９３を、発電機８２及び走行用モータ８５のハウジング８６，８７に対して、フローティング支持状態とすることができる。このため、発電機８２及び走行用モータ８５のロータ８２Ａ，８５Ａが回転したときにステータ８２Ｂ，８５Ｂに作用するトルクや、発電機８２及び走行用モータ８５に作用する外力をゴム１１１Ａより緩和することができ、非回転軸１０１及び連結軸９３がこれらのトルクや外力の影響を受けることを抑制することがきる。 Further, since the rubber 111A, which is an elastic member that absorbs vibration and impact, is disposed on the convex portion 111, the non-rotating shaft 101 and the connecting shaft 93 inserted through the non-rotating shaft 101 are provided. Further, the generator 82 and the housings 86 and 87 of the traveling motor 85 can be in a floating support state. Therefore, the torque acting on the stators 82B and 85B and the external force acting on the generator 82 and the traveling motor 85 when the rotors 82A and 85A of the generator 82 and the traveling motor 85 rotate are alleviated from the rubber 111A. Thus, the non-rotating shaft 101 and the connecting shaft 93 can be prevented from being affected by these torques and external forces.

　特に、この実施形態では、図５に示されているように、ゴム１１１Ａと凹部１１２との間には円周方向の隙間１１３が設けられているため、非回転軸１０１を中心として発電機８２及び走行用モータ８５のステータ８２Ｂ，８５Ｂに作用するトルク変動と振動伝達を一層有効に緩和することができる。 In particular, in this embodiment, as shown in FIG. 5, since a circumferential gap 113 is provided between the rubber 111 </ b> A and the recess 112, the generator 82 is centered on the non-rotating shaft 101. In addition, torque fluctuation and vibration transmission acting on the stators 82B and 85B of the traveling motor 85 can be more effectively mitigated.

　なお、図５で示した連結構造は、図３の実施形態における非回転軸７０の連結部７０Ａを発電機５２のハウジング５６に連結するため、及び非回転軸７１の連結部７１Ａを走行用モータ５５のハウジング５７に連結するためにも、適用することができる。 The connecting structure shown in FIG. 5 is for connecting the connecting portion 70A of the non-rotating shaft 70 to the housing 56 of the generator 52 and the connecting portion 71A of the non-rotating shaft 71 in the embodiment of FIG. It can also be applied to connect to the housing 57 of 55.

　また、図１～図４に示したそれぞれの実施形態において、バッテリ１９に車載型充電器を接続し、この車載型充電器を、一般家庭等に設けられている商用電源に接続される電源接続端子を備えたものとすることにより、バッテリ１９に、発電機と商用電源の両方から充電できるようにしてもよい。言い換えると、それぞれの実施形態に係る自動車を、プラグイン型の電気自動車としてもよい。 Further, in each of the embodiments shown in FIGS. 1 to 4, an in-vehicle charger is connected to the battery 19, and the in-vehicle charger is connected to a commercial power source provided in a general home. By providing the terminal, the battery 19 may be charged from both the generator and the commercial power source. In other words, the vehicle according to each embodiment may be a plug-in type electric vehicle.

　本発明は、エンジンと発電機と走行用モータとが搭載され、エンジンの動力で発電された電気により走行するハイブリッド型電気自動車に利用することができる。 The present invention can be used for a hybrid electric vehicle in which an engine, a generator, and a traveling motor are mounted and travels by electricity generated by the power of the engine.

Claims (15)

　エンジンと、このエンジンからの動力で発電する発電機と、この発電機で発電された電気が供給され、左右の駆動輪を駆動させるための走行用モータと、を備えているハイブリッド型電気自動車において、
　前記エンジンの出力軸の軸線延長方向の位置に前記発電機と前記走行用モータとが配置されているとともに、この走行用モータが前記エンジンと前記発電機との間に配置されており、
　前記走行用モータのロータと結合され、このロータの回転力で前記左右の駆動輪を駆動させるための駆動軸が中空軸になっているとともに、前記エンジンの前記出力軸と前記発電機とを連結する連結軸が前記中空の駆動軸の内部に挿通されていることを特徴とするハイブリッド型電気自動車。 In a hybrid electric vehicle including an engine, a generator that generates power using power from the engine, and a traveling motor that is supplied with electricity generated by the generator and drives left and right drive wheels ,
The generator and the traveling motor are disposed at a position in the axial extension direction of the output shaft of the engine, and the traveling motor is disposed between the engine and the generator,
A driving shaft coupled to the rotor of the traveling motor and driving the left and right driving wheels by the rotational force of the rotor is a hollow shaft, and the output shaft of the engine and the generator are connected to each other. The hybrid electric vehicle is characterized in that a connecting shaft is inserted into the hollow drive shaft. 　請求項１に記載のハイブリッド型電気自動車において、前記中空の駆動軸は前記連結軸にベアリングで回転自在に支持され、前記中空の駆動軸の回転方向と前記連結軸の回転方向とが同じになっていることを特徴とするハイブリッド型電気自動車。 The hybrid electric vehicle according to claim 1, wherein the hollow drive shaft is rotatably supported by a bearing on the connection shaft, and the rotation direction of the hollow drive shaft is the same as the rotation direction of the connection shaft. A hybrid electric vehicle characterized by that. 　請求項１に記載のハイブリッド型電気自動車において、前記エンジンは、前記出力軸の軸方向が左右方向となった横置き型エンジンであることを特徴とするハイブリッド型電気自動車。 2. The hybrid electric vehicle according to claim 1, wherein the engine is a horizontal engine in which an axial direction of the output shaft is a left-right direction. 　請求項３に記載のハイブリッド型電気自動車において、前記中空の駆動軸は、前記走行用モータからの駆動力を前記左右の駆動輪に分配するための差動装置に変速装置を介して接続されており、この変速装置は、前記エンジンと前記走行用モータとの間に配置されていることを特徴とするハイブリッド型電気自動車。 4. The hybrid electric vehicle according to claim 3, wherein the hollow drive shaft is connected to a differential device for distributing the driving force from the traveling motor to the left and right drive wheels via a transmission. The hybrid electric vehicle is characterized in that the transmission is disposed between the engine and the driving motor. 　請求項４に記載のハイブリッド型電気自動車において、前記発電機と前記走行用モータは互いに隣接して配置されており、これらの前記発電機と前記走行用モータは、前記発電機のハウジングと前記走行用モータのハウジングとが一体化されたユニットとなっていることを特徴するハイブリッド型電気自動車。 5. The hybrid electric vehicle according to claim 4, wherein the generator and the traveling motor are disposed adjacent to each other, and the generator and the traveling motor are connected to the generator housing and the traveling. A hybrid electric vehicle characterized in that it is a unit integrated with a motor housing. 　請求項３に記載のハイブリッド型電気自動車において、前記中空の駆動軸は、前記走行用モータからの駆動力を前記左右の駆動輪に分配するための差動装置に変速装置を介して接続されており、前記変速装置は、前記走行用モータと前記発電機との間に配置されていることを特徴とするハイブリッド型電気自動車。 4. The hybrid electric vehicle according to claim 3, wherein the hollow drive shaft is connected to a differential device for distributing the driving force from the traveling motor to the left and right drive wheels via a transmission. And the transmission is disposed between the traveling motor and the generator. 　請求項３に記載のハイブリッド型電気自動車において、前記中空の駆動軸は、前記走行用モータからの駆動力を前記左右の駆動輪に分配するための差動装置に変速装置を介して接続されており、前記差動装置は、前記左右の駆動輪の間の中央位置又は中央位置近辺に配置されていることを特徴とするハイブリッド型電気自動車。 4. The hybrid electric vehicle according to claim 3, wherein the hollow drive shaft is connected to a differential device for distributing the driving force from the traveling motor to the left and right drive wheels via a transmission. The hybrid electric vehicle is characterized in that the differential device is disposed at a central position between the left and right drive wheels or in the vicinity of the central position. 　請求項７に記載のハイブリッド型電気自動車は、前記エンジンの動力を前記左右の駆動輪に伝達するためのトランスミッションが搭載されていたエンジン型既存車を改造したものであり、このトランスミッションが取り外されていて、このトランスミッションが配置されていた前記エンジン型既存車のスペースに前記発電機と前記走行用モータとが配置されていること。 The hybrid electric vehicle according to claim 7 is a modification of an existing engine-type vehicle on which a transmission for transmitting power of the engine to the left and right drive wheels is mounted, and the transmission is removed. The generator and the traveling motor are disposed in the space of the engine-type existing vehicle where the transmission is disposed. 　請求項１に記載のハイブリッド型電気自動車において、前記走行用モータは、この走行用モータの前記ロータがステータの内側に配置されたインナーロータ方式のモータであることを特徴とするハイブリッド型電気自動車。 2. The hybrid electric vehicle according to claim 1, wherein the traveling motor is an inner rotor type motor in which the rotor of the traveling motor is disposed inside a stator. 　請求項１に記載のハイブリッド型電気自動車において、前記走行用モータは、この走行用モータの前記ロータがステータの外側に配置されたアウターロータ方式のモータであることを特徴とするハイブリッド型電気自動車。 2. The hybrid electric vehicle according to claim 1, wherein the traveling motor is an outer rotor type motor in which the rotor of the traveling motor is disposed outside a stator. 　請求項１０に記載のハイブリッド型電気自動車において、前記走行用モータの前記ロータには空冷のための多翼式のファンが設けられ、前記走行用モータのハウジングには吸気口及び排気口が設けられていることを特徴とするハイブリッド型電気自動車。 11. The hybrid electric vehicle according to claim 10, wherein the rotor of the traveling motor is provided with a multi-blade fan for air cooling, and the housing of the traveling motor is provided with an intake port and an exhaust port. A hybrid electric vehicle characterized by that. 　請求項１０に記載のハイブリッド型電気自動車において、前記発電機は、この発電機のロータがステータの外側に配置されたアウターロータ方式の発電機であり、この発電機の前記ロータには空冷のための多翼式のファンが設けられ、前記発電機のハウジングには吸気口及び排気口が設けられていることを特徴とするハイブリッド型電気自動車。 The hybrid electric vehicle according to claim 10, wherein the generator is an outer rotor type generator in which a rotor of the generator is disposed outside a stator, and the rotor of the generator is air-cooled. A hybrid electric vehicle characterized in that a multi-blade type fan is provided, and an intake port and an exhaust port are provided in a housing of the generator. 　請求項１０に記載のハイブリッド型電気自動車において、前記走行用モータの前記ステータの中心部には、前記連結軸が内部に挿通された中空の非回転軸が配置され、この非回転軸と前記走行用モータのハウジングとが、前記非回転軸に前記ハウジングまで達して設けられている連結部を介して連結されており、この連結は、前記連結部における前記ハウジング側の端部と、前記ハウジングの内面とのうち、一方に設けられた凸部を他方に設けられた凹部に前記非回転軸の軸方向へ嵌合することにより行われていることを特徴とするハイブリッド型電気自動車。 The hybrid electric vehicle according to claim 10, wherein a hollow non-rotating shaft into which the connecting shaft is inserted is disposed at a center portion of the stator of the traveling motor, and the non-rotating shaft and the traveling A motor housing is connected to the non-rotating shaft through a connecting portion provided to reach the housing, and the connection is made between the end of the connecting portion on the housing side and the housing. A hybrid electric vehicle characterized in that a convex portion provided on one of the inner surfaces is fitted into a concave portion provided on the other in the axial direction of the non-rotating shaft. 　請求項１３に記載のハイブリッド型電気自動車において、前記凸部には、前記非回転軸を前記ハウジングにフローティング支持状態とするための弾性部材が配置されていることを特徴とするハイブリッド型電気自動車。 14. The hybrid electric vehicle according to claim 13, wherein an elastic member for placing the non-rotating shaft in a floating support state on the housing is disposed on the convex portion. 　請求項１３に記載のハイブリッド型電気自動車において、前記発電機は、この発電機のロータがステータの外側に配置されたアウターロータ方式の発電機であり、前記非回転軸は、前記発電機の前記ステータの中心部に配置された非回転軸にもなっているとともに、前記発電機のハウジングと前記走行用モータのハウジングとが一体化されていることを特徴とするハイブリッド型電気自動車。 14. The hybrid electric vehicle according to claim 13, wherein the generator is an outer rotor type generator in which a rotor of the generator is disposed outside a stator, and the non-rotating shaft is the generator of the generator. A hybrid electric vehicle characterized in that it is a non-rotating shaft disposed in the center of the stator, and the housing of the generator and the housing of the traveling motor are integrated.
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