JP2005186814A - Electric vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an electric vehicle having an engine and a generator, capable of ensuring a predetermined space above the engine and the generator and making a vehicle width small. <P>SOLUTION: In the electric vehicle 100, a power unit 200 is arranged such that a crank shaft 213 is arranged between pillar materials 115a of a seat pillar 115 in a longitudinal direction of a vehicle body. The power unit 200 is integrally constituted by directly connecting the generator 250 to the crank shaft 213 of the engine 210 and the generator 250 is driven by rotation of the engine 210 to generate electricity. The power generation force is fed to a motor 150 for rotating/driving a rear wheel 140. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to an electric vehicle in which a generator is driven using an engine, and a motor is driven by electric power generated by the generator to drive wheels.

  Conventionally, a self-propelled vehicle is generally driven by an engine with wheels as seen in motorcycles and automobiles. In recent years, environmental issues have been emphasized, and in order to reduce environmental pollutants emitted from engine-driven vehicles as much as possible, a drive motor that drives the wheels is mounted along with the engine, and only the drive wheels are driven by the engine. Instead, a vehicle in which driving wheels are driven by a driving motor, a so-called hybrid vehicle is considered.

  For example, Patent Document 1 discloses an electric motorcycle having a drive motor that drives a drive wheel, a battery that supplies power to the drive motor, and an engine-driven generator that charges the battery while traveling. In this vehicle, an engine and a generator are arranged between the seat pillar and the rear wheel fender so that their respective rotation shafts are parallel to each other, and the rear of the generator is disposed below the generator via a power unit. A drive motor for driving the wheel is disposed.

In this electric motorcycle, it is possible to charge the battery with the electric power generated by the generator and drive the motor by the electric power charged to drive the wheels. Therefore, environmental pollutants can be reduced by making the engine speed substantially constant regardless of the speed of the vehicle.
See JP-A-2001-106159, FIG.

  However, in the electric motorcycle as the hybrid vehicle disclosed in Patent Document 1, the engine and the generator are arranged vertically in a limited space between the seat pillar and the rear wheel. For this reason, there is a problem that it is difficult to secure a predetermined space such as an installation space for components such as an intake / exhaust device connected to the engine.

  Further, the rotation shafts of the engine and the generator are arranged in a direction substantially orthogonal to the front-rear direction of the vehicle body, and the crankshaft having a predetermined length or the length of the rotor shaft of the generator, the vehicle width Will become bigger. When this is applied to a small electric motorcycle in which the vehicle width is desired to be as small as the width of the frame as much as possible, it looks bad. Further, since the heavier engine and generator are stacked, the center of gravity becomes higher and the operability is lowered.

  The present invention has been made in view of the above points, and has an engine and a generator. A predetermined space can be secured above the engine and the generator. Further, the vehicle width is reduced and the operability is improved. An object of the present invention is to provide an electric vehicle in which

  An electric vehicle according to the present invention includes a power unit that integrally includes an engine and a generator that is directly connected to a crankshaft of the engine and is driven by rotation of the crankshaft to supply electric power to a motor that drives wheels. The power unit has the crankshaft arranged in the longitudinal direction of the vehicle body.

  According to this configuration, in the power unit, the generator is directly connected to the crankshaft of the engine and integrally configured, and the crankshaft is arranged in the front-rear direction of the vehicle body. The machines can be arranged in a compact state by arranging them in the front-rear direction of the vehicle body, and the generator and the engine do not line up and down, and a predetermined space can be secured above the power unit. In addition, since the crankshaft coincides with the front-rear direction of the vehicle body, the crankshaft does not protrude in the vehicle width direction, and the vehicle width can be narrowed (reduced). Can be easily straddled.

  In the electric vehicle of the present invention, in the above configuration, the cylinder head of the engine disposed above the crankshaft includes an intake port communicating with an intake valve and an exhaust port communicating with an exhaust valve. Are arranged with a cylinder in between.

  According to this configuration, since the intake port and the exhaust port are arranged with the cylinder sandwiched in the axial direction of the crankshaft, the intake pipe and the exhaust pipe can be respectively attached in the longitudinal direction of the vehicle body. The members constituting the intake / exhaust system such as pipes are not arranged so as to protrude in the vehicle width direction, and the corresponding vehicle width can be reduced.

  In the electric vehicle of the present invention, in the above configuration, a carburetor connected to the intake port is disposed on the front side of the intake port.

  According to this configuration, since the carburetor connected to the intake port is disposed in front of the intake port, the carburetor is disposed along the front-rear direction of the vehicle, and the left and right shakes are small and in a stable state. The air-fuel mixture can flow to the intake port. Further, it is arranged without protruding in the vehicle width direction.

  The electric vehicle of the present invention has a pair of frame portions arranged on the left and right sides of the power unit in the above configuration, and the power unit is fixed to the pair of frame portions from the side.

  According to this structure, since it is being fixed to a pair of frame part from the side, it is not necessary to suspend a power unit from upper direction or to arrange | position on the other bottom part frame which forms the lower surface of a vehicle body. Therefore, a space is formed in the lower part and the upper part of the power unit, and other parts such as an air cleaner can be efficiently arranged.

  In the electric vehicle of the present invention, in the above-described configuration, at least a crankshaft of the engine cylinder and the crankshaft is disposed in the vicinity of a fixed portion of the power unit with respect to the pair of frame portions.

  According to this configuration, the power unit is fixed to the frame portion, particularly in the vicinity of the crankshaft in which vibration is generated, among the cylinder in which the piston moves up and down in the power unit and the crankshaft in which the rotational moment is generated by rotational driving. Therefore, vibration due to engine driving hardly occurs, and the power unit itself can be supported in a stable state on the vehicle body.

  In other words, the power unit is fixed and supported in the vicinity of the vibration source of the power unit itself, which is generated by the engine drive, in particular, the rotational drive of the crankshaft that is heavy in the engine structure, so that the vibration of the power unit can be prevented. it can. That is, it is possible to make it difficult for the power unit itself to shake in the front-rear direction (pitching) and to rotate in the left-right direction (rolling) due to the rotational movement of the crankshaft.

  In the above-described configuration, the electric vehicle according to the present invention is a seat pillar in which the pair of frame portions support a seat at an upper portion.

  According to this configuration, since the power unit is supported from the side by the seat pillar at the lower side of the seat, the power unit is hung from the upper side, and the seat is not disposed on the frame forming the lower surface. It can be efficiently arranged below.

  In the above-described configuration, the electric vehicle according to the present invention further includes a down tube extending from below the handle to below the seat and having a step floor formed at a portion below the seat, and a rear end portion of the down tube Are joined to the lower ends of the pair of frame portions.

  According to this configuration, in addition to the power unit being attached to the seat pillar without protruding in the vehicle width direction below the seat, the lower end portion of the seat pillar is connected to the rear end portion of the down tube having the step floor. Since it is joined, the space below the seat can be used effectively and the vehicle can be easily straddled by the driver.

  As described above, according to the present invention, in an electric vehicle that drives a generator by an engine and supplies driving force to a motor that drives wheels by the electric power of the generator, a predetermined amount is set above the engine and the generator. Space can be secured and the vehicle width can be kept small.

  The essence of the present invention is that in a hybrid electric vehicle that drives a generator by an engine and supplies the electric power of the generator to a motor that drives wheels via a battery, a space is formed above the engine and the generator. And reducing the vehicle width.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  FIG. 1 is a left side view showing a main configuration of an electric vehicle according to an embodiment of the present invention.

  An electric vehicle 100 shown in FIG. 1 is an underbone type and a self-propelled electric motorcycle including a step floor 105. The electric vehicle as used herein refers to a two-wheeled vehicle or a three-wheeled vehicle in which at least part of the power transmitted to the drive wheels is generated by an electric motor. The electric vehicle 100 is provided with a frame part 110, a seat 120, a frame cover part (front cover 131, main body cover 133, step floor cover 135, etc.) 130, motors 150 for driving wheels (rear wheels) 140, and motors 150. The swing arm 160, the battery 170 connected to the motor 150, the control unit 180, and the power unit 200 that supplies power to the motor 150 via the battery 170 are provided.

  2 is a perspective view showing an external appearance of the electric vehicle according to the embodiment of the present invention, and FIG. 3 is a perspective view of the electric vehicle showing a state in which the frame cover portion is removed in FIG. 3 shows a state in which, in addition to the front cover 131, the main body cover 133 below the seat, and the frame cover portion 130 including the step floor cover 135, the seat 120, the radiator 141, and the like are removed.

  As shown in FIGS. 1 to 3, the frame portion 110 has a handle post 111, a down tube 113 extending from the handle post 111 toward the rear of the vehicle and below the seat 120, and a lower end portion at the rear end portion of the down tube 113. It has a sheet pillar 115 that is bonded and supports the sheet 120 at the top. A radiator 141 is attached to the lower surface of the rear portion of the seat 120.

  The down tube 113 includes a pair of tube portions 113a arranged to face each other. Each tube portion 113a is connected to a front tube portion 1131 that descends rearward from the handle post 111 and a lower end portion of the front tube portion 1131. The tube portion 113a extends rearward substantially horizontally near the lowest ground clearance of the vehicle body, and a step floor 105 is provided on the upper surface. And a rear tube portion 1132 to be formed.

  The front surfaces of the pair of front tube portions 1131 are covered with a front cover 131. A battery 170 is disposed between the pair of front tubes 1131 inside the front cover 131 (see FIG. 1).

  The battery 170 is connected to the motor 150, the control part 180, and the generator 250 mentioned later via the wiring cable (not shown). The battery 170 is composed of a nickel metal hydride battery or a nickel cadmium battery.

  Further, a control unit 180 covered with a step floor cover 135 is disposed on the step floor portion between the pair of rear tube portions 1132. The control unit 180 is connected to the motor 150, the battery 170, the power unit 200, a throttle lever unit (not shown), and the like, and electrically controls the entire electric vehicle 100.

  Further, between the rear end portions of the pair of rear tube portions 1132, a front end portion of a swing arm 160 extending rearward from the rear tube portion 1132 is pivotally attached via a pivot shaft 162.

  A motor 150 and a rear wheel 140 driven by the motor 150 are integrally provided at the rear end portion of the swing arm 160. A rear suspension 164 is interposed between the central portion of the swing arm 160 and the left pillar material 115a. In FIG. 1, only the lower end portion of the rear suspension 164 is shown for convenience.

  The rotation shaft of the motor 150 is formed integrally with the shaft of the rear wheel 140 and has the same axis. The motor 150 may be provided in any manner as long as it is provided on the swing arm 160. For example, it may be arranged at the center portion of the swing arm 160 or may be arranged on the front end side.

  Furthermore, the direction of the rotating shaft of the motor 150 may be provided so as to extend in the vehicle width direction, or may be provided so as to extend in the front-rear direction of the vehicle. If the rotating shaft of the motor 150 is parallel to the rotating shaft of the driving wheel, here, the rear wheel 140, the power transmission mechanism between them can be simplified.

  As described above, the electric vehicle 100 has a cantilever structure in which the rear wheel 140 is supported by the swing arm 160. However, the structure is not limited to this, and the body frame, for example, the pair of rear tube portions 1132 in the electric vehicle 100 is provided. A base end portion is pivotally attached to each of the rear end portions so as to extend on both sides of the rear wheel 140, and at the front end portion, the shaft portion of the rear wheel 140 is rotatably supported. A swing-type swing arm may be used.

  Further, the lower end portions of the pair of pillar members 115a constituting the seat pillar 115 are joined to the rear end portions of the pair of rear tube portions 1132. The pillar members 115a face each other on the left and right sides, It is arranged so as to rise along the front surface of the ring 140 and extend obliquely upward to the rear.

  The seat pillar 115 is joined to the upper part of the pair of pillar members 115a and the upper part of the pair of pillar members 115a so as to protrude substantially horizontally forward, and supports a front portion of the seat 120, and a U-shaped seat frame 116, A support pipe material 117 is provided between the seat frame 116 and the pillar material 115a.

  A seat 120 is disposed above the pillar material 115 a and the seat frame 116, and a fuel tank 119 is disposed inside the seat 120.

  An air cleaner 122 is disposed between the pillar members 115a below the seat 120 and below the fuel tank 119. In addition, the power unit 200 is fixed to the pillar material 115 a with bolts 173 below the air cleaner 122.

  FIG. 4 is an enlarged perspective view showing a power unit of the electric vehicle shown in FIG. 3, and FIG. 5 is a left side view showing an attached state of the power unit of the electric vehicle. FIG. 6 is a perspective view showing the frame of the electric vehicle with the power unit removed.

  Upper ribs 1151 projecting forward of the vehicle are formed on the front side of the vehicle at the upper part of the pair of pillar members 115a, and lower ribs 1152 are formed projecting rearward of the vehicle on the rear side of the lower vehicle.

  Bolt holes 1154 and 1156 into which the bolts 173 are inserted are formed in the upper rib 1151 and the lower rib 1152, respectively.

  The upper rib 1151 and the lower rib 1152 are arranged point-symmetrically with respect to the intersection position of the crankshaft 213 and the seat pillar 115, specifically, the pillar material 115a, when viewed from the side of the vehicle.

  Furthermore, the upper rib 1151, the lower rib 1152, and the bolt holes 1154 and 1156 are formed on the left and right sides of each of the pair of pillar members 115a (see FIG. 6). The protruding degree of the upper rib 1151 and the lower rib 1152 may be any protruding degree as long as the bolt holes 1154 and 1156 are disposed in the vicinity of the respective axes of the pair of pillar members 115a. In this embodiment, the bolt holes 1154 and 1156 are formed in the upper rib 1151 and the lower rib 1152. However, the present invention is not limited to this, and the bolt holes 1154 and 1156 may be formed in the pillar material 115a itself as long as the strength can be secured.

  These bolt holes 1154 and 1156 support the power unit 200 and are a pair of lines in which the lines connecting these two bolt holes 1154 and 1156 are orthogonal to the crankshaft 213.

  The bolt holes 1154 and 1156 securely support the power unit 200 in a state where the power unit 200 is installed between the pair of pillar members 115a by the inserted bolts 173. The power unit 200 is covered with a main body cover 133.

  FIG. 7 is a right sectional view of the power unit, and FIG. 8 is a front view of the power unit. In FIG. 7, the main body of the power unit 200 is partially broken to show the main part inside the engine 210. The power unit 200 shown in FIGS. 1, 3 to 5, 7, and 8 includes an engine 210 and a generator 250. The rotor shaft of the generator 250 is directly connected to the crankshaft 213 of the engine 210, is driven by the rotation of the crankshaft 213, and supplies power to the battery 170 that drives the rear wheel 140. The generator 250 and the engine 210 share a rotating shaft and are integrally configured.

  The power unit 200 is fixedly supported between a pair of pillar members 115a in a state where the crankshaft 213 is disposed on a center line extending in the front-rear direction of the vehicle body. In addition, concave portions (not shown) corresponding to the shape of the pillar material 115a are formed on both side portions of the power unit 200, and the pillar material 115a is disposed along each of the concave portions. The concave portions function as positioning portions for the pillar material 115a when the power unit 200 is disposed between the pillar materials 115a.

  The engine 210 is an overhead valve type single cylinder two valve type engine. In the engine 210, a cylinder head 215 is provided on the upper part of the crankcase 230.

  The intake port 217 of the cylinder head 215 is formed to open toward the vehicle front side. The intake port 217 communicates with an intake valve 216 that is openable and closable inside.

  The cylinder head 215 is formed with an exhaust port 219 that opens toward the rear of the vehicle. The exhaust port 219 communicates with an exhaust valve 218 that can be opened and closed inside the cylinder head 215. In this manner, the cylinder head 215 has the intake port 217 and the exhaust port 219 disposed at a position sandwiching the cylinder on the approximate line of the central axis extending in the longitudinal direction of the vehicle when viewed from above.

  The intake port 217 is connected to a carburetor 220 disposed on the front side of the intake port 217 (see FIGS. 4, 5, and 7). The carburetor 220 is connected to the air cleaner 122 by an intake pipe 220a. Further, the exhaust port 219 is connected to the muffler 222 via the exhaust pipe 221 as shown in FIG. The muffler 222 is disposed on the right side in the traveling direction of the rear wheel 140, and is provided on the opposite side of the rear wheel 140 with the rear suspension 164 disposed on the left side of the rear wheel 140.

  The intake valve 216 and the exhaust valve 218 are arranged along with the intake port 217 and the exhaust port 219 on the longitudinal axis of the vehicle body, that is, directly above the crankshaft 213 and substantially parallel to the axis of the crankshaft 213. ing. The intake valve 216 and the exhaust valve 218 are connected to the crankshaft 213 and can be opened and closed up and down by a rocker arm (not shown). The upper portion of the cylinder head 215 is covered with a head cover 215a.

  The cylinder 224 of the engine 210 is arranged in the vertical direction, and the lower end portion of the piston 226 in the cylinder 224 is connected to the upper end portion of the connecting rod 228.

  The lower end portion of the connecting rod 228 is rotatably connected to a crankshaft 213 disposed in the crankcase 230 in a substantially horizontal direction and on the longitudinal axis of the vehicle body. The up and down motion is transmitted through the connecting rod 228 to rotate.

  As shown in FIG. 8, counter shafts 231 and 232 are provided along the crankshaft 213 on both the left and right sides of the crankshaft 213. The counter shafts 231 and 232 rotate in the direction opposite to the rotation direction of the crankshaft 213 in conjunction with the rotational drive of the crankshaft 213 by a gear portion (not shown). As a result, the counter shafts 231 and 232 cancel the inertial force of the crankshaft 213 and attenuate the rolling caused by the rotational drive of the crankshaft 213.

  A generator 250 is joined to the front portion of the crankcase 230, and the generator 250 has a front portion 213a of the crankshaft 213 serving as a rotor shaft, a stator 253 joined to the front end portion of the front portion 213a, and a stator 253. A coil 255 wound in a direction orthogonal to the rotation direction of the stator 253, and a magnet portion 257 and the like disposed on the outer peripheral portion of the stator 253 in the rotation direction so as to be separated from the stator 253.

  The generator 250 is connected to a battery, generates power by rotation of the crankshaft 213, and supplies generated power to the battery.

  The power unit 200 configured as described above is supported by a pair of pillar members 115a via bolts in the vicinity of the cylinder 224 and the crankshaft 213 of the engine 210. In other words, the power unit 200 has the fixing hole 260 that is fixed to the pillar material 115 a via the upper rib 1151, the lower rib 1152, and the bolt 173.

  The formation position of the fixing hole 260 in the power unit 200 is formed corresponding to the bolt holes 1151 and 1152 provided in the pillar material 115a. That is, as viewed from the side, a line connecting both the fixing holes 260 is formed on both sides of the power unit 200 at a position substantially orthogonal to the crankshaft 213. The fixing hole 260 includes a through hole 261 that penetrates in the left-right direction of the vehicle body, and a cylindrical rubber bush 262 that is provided at a predetermined position on the inner peripheral surface of the through hole 261.

  In addition, the fixing hole 260 is formed in two places near the upper and lower ends of the crankcase 230 so as to penetrate both the left and right side surfaces horizontally. Bolts 173 are inserted into the rubber bushings 262 of these fixing holes 260. Note that the center of gravity of the power unit 200 is located at a substantially central portion in the length direction of the crankshaft 213. For this reason, the fixing hole 260 is also spaced apart from the center of gravity and disposed at a position sandwiching the center of gravity.

  The bolt 173 fixes and supports the power unit 200 between the pillar members 115a, and the cylinder 224 and the crankshaft 213 are arranged on the longitudinal axis of the vehicle body. In particular, the crankshaft 213 is connected to the longitudinal axis of the vehicle body. It is arranged to match. The bolt 173 is disposed substantially horizontally and orthogonally to the longitudinal axis of the vehicle body.

  In the electric vehicle 100 configured as described above, the generator 210 is rotated by driving the engine 210 to generate electric power, and the electric power generated by the generator 250 is supplied to the battery 170 via the wiring cable. The battery 170 supplied with electric power supplies driving electric power to a motor 150 that rotationally drives the rear wheel 140 via a wiring cable.

  Then, the motor 150 to which the drive power is supplied supplies the motor 150 with an opening of a throttle unit (not shown), that is, an amount of current at a speed desired by the driver. Let it run.

  That is, in the electric vehicle 100, the engine 210 is not directly configured to drive the drive wheels, here the rear wheels 140, and is for driving the generator 250. It is driven by the electric power supplied from the generator 250 via the battery 170.

  Therefore, in the electric vehicle 100 having this configuration, the engine speed can be made constant regardless of whether the throttle portion is opened or closed. That is, the combustion efficiency is high even when idling or suddenly accelerating, and environmental pollutants generated with changes in the rotational speed of the engine 210 can be reduced.

  According to the present embodiment, in power unit 200, the rotor shaft of generator 250 is configured as a front portion 213a of crankshaft 213 of engine 210, and crankshaft 213 is in the longitudinal direction of the vehicle body, more specifically. It is arranged at a position that coincides with the axis of the vehicle body.

  Therefore, the generator 250 and the engine 210 are arranged in the front-rear direction of the vehicle body, and the power unit 200 itself is arranged along the front-rear direction of the vehicle body. The generator 250 and the engine 210 are arranged vertically. In other words, a predetermined space can be secured above the power unit 200.

  Further, since the crankshaft 213 coincides with the front-rear direction of the vehicle body, the crankshaft 213 is disposed below the seat 120 and between the pillar members 115a, so that the crankshaft 213 does not protrude in the vehicle width direction and the vehicle width can be reduced. be able to. Thereby, when a driver straddles, it can straddle easily.

  In addition, since the power unit 200 is supported by the seat pillar 115 from both sides below the seat 120, the power unit 200 is suspended from above or disposed on the frame portion 110 that forms the lower surface. It is efficiently arranged below the sheet 120. Therefore, the center of gravity of the vehicle body can be lowered. In addition, a space for disposing other components such as an air cleaner can be formed below and above the power unit 200.

  Further, the power unit 200 is disposed between the pair of pillar members 115a that support the seat 120 at the upper end portion, and the pair of pillar members 115a by bolts 173 that extend in a direction orthogonal to the extending direction of the pillar members 115a. Each is securely fixed and supported.

  A crankshaft 213 and a cylinder 224 are disposed in the vicinity of the fixed portion. In detail, the power unit 200 includes the seat pillar 115 in the vicinity of the piston 226 that moves up and down in the cylinder 224 and the crankshaft 213 that rotates and generates a rotational moment, particularly in the vicinity of the crankshaft 213 that generates vibration. It is supported by. For this reason, vibration due to driving of the engine 210 hardly occurs, and the power unit 200 itself is supported in a stable state on the vehicle body. That is, the front and rear shake of the power unit 200 itself due to the rotational drive of the crankshaft 213, so-called pitching, and left-right rotation, so-called rolling are less likely to occur.

  The power unit 200 is in a state where the power unit 200 is securely fixed and supported by the seat pillar 115 at the center of gravity, and further, vibration of the power unit 200 itself can be reduced.

  Further, according to the present embodiment, since the intake port 217 and the exhaust port 219 are opened in opposite directions in the axial direction of the crankshaft 213, the intake system such as the carburetor 220 and the exhaust system are respectively provided in the longitudinal direction of the vehicle body. Each tube 221 can be attached. Further, with this configuration, members constituting the intake / exhaust system such as the carburetor 220 and the exhaust pipe 221 are not protruded and arranged in the vehicle width direction, and the vehicle width can be reduced accordingly.

  The carburetor 220 connected to the air inlet 217 is disposed on the generator 250 and on the longitudinal axis of the vehicle. For this reason, the carburetor 220 does not protrude in the vehicle body width direction, and the carburetor 220 is arranged on the center line of the vehicle width, so that the left and right shake due to vibration during driving, such as driving the engine 210, is reduced and stabilized. In the state, the air-fuel mixture can flow to the intake port 217.

  Further, since the driving wheel is driven by the motor 150 integrally provided at the rear end portion of the swing arm 160, a power transmission mechanism such as a drive shaft is provided between the front end portion and the rear end portion of the swing arm 160. There is no need to pass a cable connecting the motor 150 and the driving circuit, and the thickness of the central portion can be reduced.

  In the present embodiment, the power unit 200 is disposed between the pillar members 115a of the sheet pillar 115 that supports the seat 120 at the upper end portion, and is fixed to the pillar members 115a from both sides. Not limited to this, it is a part of the main body frame that rises in front of the rear wheel 140, and may be fixed to this part.

  Furthermore, although the present embodiment has been described as an electric motorcycle, the present invention is not limited to this, and the present invention is applicable to any vehicle as long as the vehicle is driven by a generator driven by an engine and a motor driven by the generator. For example, it is good also as an electric tricycle, an electric four-wheeled vehicle, etc. Furthermore, in the electrically powered vehicle 100 of the present embodiment, the rear wheel 140 has been described as a driving wheel, but the present invention is not limited to this, and an electric vehicle having a front wheel as a driving wheel may be used.

  The electric vehicle according to the present invention includes an engine and a generator in a vehicle body, and has an effect that a predetermined space can be secured above the engine and the generator, and further, the vehicle width can be reduced, and the engine and the motor are used. It is useful as a vehicle for driving wheels, a so-called hybrid vehicle.

The left view which shows the structure of the electric vehicle which concerns on one embodiment of this invention The perspective view which shows the structure of the electric vehicle which concerns on one embodiment of this invention. The perspective view of the electric vehicle which shows the state which removed the frame cover part in FIG. The expansion perspective view which shows the power unit of the electric vehicle of FIG. Left side view showing attached state of power unit of electric vehicle The perspective view which shows the flame | frame of the electric vehicle of the state which removed the power unit Right sectional view of the same power unit Front view of the power unit

Explanation of symbols

DESCRIPTION OF SYMBOLS 100 Electric vehicle 105 Step floor 110 Frame part 111 Handle post 113 Down tube 115 Seat pillar 120 Seat 140 Rear wheel 150 Motor 170 Battery 180 Control part 200 Power unit 210 Engine 213 Crankshaft 215 Cylinder head 216 Intake valve 217 Intake port 218 Exhaust valve 219 Exhaust port 220 Carburetor 221 Exhaust pipe 224 Cylinder 226 Piston 250 Generator 260 Fixed part 261 Through hole 115a Pillar material

Claims (7)

A power unit that integrally includes an engine and a generator that is directly connected to a crankshaft of the engine and is driven by rotation of the crankshaft to supply electric power to a motor that drives a wheel;
The power unit is an electric vehicle characterized in that the crankshaft is arranged in a longitudinal direction of a vehicle body.   In the cylinder head of the engine disposed above the crankshaft, an intake port that communicates with an intake valve and an exhaust port that communicates with an exhaust valve are disposed across the cylinder in the axial direction of the crankshaft. The electric vehicle according to claim 1, wherein   The electric vehicle according to claim 2, wherein a carburetor connected to the intake port is disposed in front of the intake port. A pair of frame portions disposed on the left and right of the power unit;
The electric vehicle according to claim 1, wherein the power unit is fixed to the pair of frame portions from the side.   5. The electric vehicle according to claim 4, wherein at least a crankshaft of a cylinder and a crankshaft of the engine is disposed in the vicinity of a fixed portion of the power unit with respect to the pair of frame portions.   The electric vehicle according to claim 4, wherein the pair of frame portions are seat pillars that support a seat at an upper portion. Further comprising a down tube extending from below the handle to the lower part of the seat and having a step floor formed on the lower part of the seat,
The electric vehicle according to claim 6, wherein a rear end portion of the down tube is joined to a lower end portion of the pair of frame portions.

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