JP3296932B2 - Scooter with motor and engine - Google Patents

Abstract

PURPOSE: To change an existing engine drive type unit into a hybrid type power unit by attaching a motor drive type unit by switching power between a V-belt type power transmission system and a power transmission system for motor and driving the hybraid type power unit by power of either motor or engine. CONSTITUTION: A unit 42 for driving motor which includes a motor 40 and a power transmission system 41 which transmits power to a drive shaft in one unit is provided on the opposite side across a rear wheel 14 of a V-belt type power transmission device 24. By switching power between the V-belt type power transmission system 24 and a power transmission system for motor 41 by a switching mechanism, a hybrid type power unit can be driven by power of either motor 40 or engine 21. Consequently, it is possible to change an existing engine drive type unit into the hybrid type power unit 20 by attaching a motor drive type unit 42.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a scooter which includes a motor and an engine, and which is driven by either one of the two motive powers by switching power between the two.

[0002]

2. Description of the Related Art Conventionally, motorcycles use an internal combustion engine that burns and explodes fuel such as gasoline or light oil and transmits the linear motion of a piston generated by the explosion to a crankshaft as rotational force via a connecting rod. Most common because they are driven. On the other hand, in recent years, as a substitute for the fuel such as gasoline, research and development of a motorcycle driven by a motor using electric power as a power source and a battery has been pursued for practical use.

[0003]

As described above, the mainstream of the power of a motorcycle is an internal combustion engine. However, this type of engine burns fuel to obtain the power. There is an environmental problem that it is generated, and there is also a problem that raw materials such as gasoline that are fuel are limited resources. In addition, the above-mentioned electric-powered type has a problem that a very large battery must be mounted due to a problem of battery capacity in order to secure a practical traveling distance with one charge, There is a problem that the output is not enough to drive on a gentle slope, and it has not yet reached the level of practical use. Attempts have been made to use both the above-mentioned internal combustion engine and an electric-powered engine together to cover the problems of both, and to take advantage of both, but with the current mainstream internal combustion engine There is room for research on how to mount the electricity-powered unit on a power unit. It is also necessary to consider the maintenance of the rear wheels. The present invention solves the above-described problem, and can relatively easily mount a motor drive unit on a power unit having an existing internal combustion engine.
An object is to provide a scooter provided with a motor and an engine .

[0004]

In order to achieve the above-mentioned object, a scooter provided with a motor and an engine according to the present invention comprises an engine and an engine having a V-belt type power transmission system housed therein. In a power unit for a motorcycle configured integrally with a transmission case extending from one side of the crankcase toward the rear of the vehicle body and configured to support one end of a drive shaft of a rear wheel at a rear portion of the transmission case, one end of the rear divided drive shafts is extended in a direction opposite to the transmission case, and a motor, a motor drive unit in which the power transmission system integration for transmitting the power of the motor to the drive shaft into one unit Provided at a position on the opposite side of the rear wheel of the V-belt type power transmission system , and the output shaft of the motor extends in the vehicle longitudinal direction.
And a motor drive unit is provided to the motor drive unit.
The reduction gear connected to the output shaft and the offset from the rear wheel drive shaft
And mounted on the case of the motor drive unit.
A rotating shaft, which is fixed to the rotating shaft and meshes with the reduction gear;
A reduction gear, and slidably provided in the rotating shaft in the axial direction.
Switching gear, and fixed to the motor-side end of the rear wheel drive shaft.
And the switching gear is connected to the rear wheel.
So that it can be detachably engaged with the drive gear.
It is characterized in that the.

[0005]

The motor according to the present invention having the above-mentioned structure and
According to the scooter equipped with the engine, the motor drive unit in which the motor and the power transmission system are configured as a single unit.
A knit is provided at a position on the opposite side of the V-belt type power transmission system with respect to the rear wheel, and the motor drive
Switch the presence or absence of motor power transmission to the rear wheels with the unit
Therefore, the motor driving unit can be easily mounted on a power unit having an existing internal combustion engine.

[0006]

EXAMPLES The following Preparations a motor and an engine according to the present invention
An embodiment of the scooter obtained will be described with reference to the accompanying drawings. In the following description, the motor and engine are provided.
Hybrid power unit
Name. FIG. 1 includes a motor and an engine according to the present invention.
It is a schematic side view of the scooter which was set. In the figure, reference numeral 1 denotes a scooter type motorcycle, and 2 denotes a body frame. The vehicle body frame 2 includes a head pipe 2a that rotatably supports the steering shaft 3 and the front fork 4, a pair of left and right down tubes 2b whose tips are fixed to the head pipe 2a and extend obliquely downward toward the rear of the vehicle body. It comprises a pair of left and right back tubes 2c extending rearward from the rear end of the down tube 2b. The left and right front forks 4 rotatably support the front wheel 5. A battery 6 is housed between the pair of left and right down tubes 2b, and a fuel tank 7 is attached to the rear end of the back tube 2c. In the figure, reference numeral 8 denotes a seat, and a storage space 10 for storing a helmet 9 and the like is formed below the seat 8.
The above-described body frame 2, battery 6, fuel tank 7, and storage space 10 are covered with a body cover 11.

In the figure, reference numeral 20 denotes a hybrid power unit according to the present invention. The hybrid power unit 20 has a front upper portion swingably suspended via a link (no symbol) on a bracket 2d fixed to the back tube 2c, and a back tube via a buffer unit (not shown) on the rear side. 2c elastically supported at the rear,
It is configured as a so-called swing unit. Also,
Figure 12 shows a muffler, the muffler 12 as shown in the figures above the transmission cases for motors, said transmission kinematic cable
Graphics and are arranged so as to be substantially parallel, also, the exhaust pipe 13 connecting the engine 21 to be described later and the muffler 12 are arranged so as to be positioned between the rear wheel 14 and the transmission cases .

Hereinafter, the hybrid power unit 2 will be described.
The configuration of 0 will be described in detail with reference to FIG. FIG. 2 is a schematic sectional view of the hybrid power unit 20. As shown in FIG. 2, the hybrid power unit 20 includes an air-cooled two-cycle single-cylinder engine 21, a transmission case 23 integrally extending from the left side surface of the crankcase 22 of the engine 21 toward the rear of the vehicle,
A V-belt continuously variable transmission 24 (hereinafter simply referred to as a transmission 24) housed in the transmission case 23; one end of a rear wheel drive shaft 15 of a rear wheel 14 at the rear of the transmission 24; I support. The engine 21 is covered with a shroud 25 from the right side surface of the crankcase 22 to the periphery of the cylinder. The crankcase 22 supports a crankshaft 26 extending in the width direction of the vehicle. A magnet generator 27 is attached to the right end of the crankshaft 26. A fan 27b having a plurality of fins (no reference numeral) is fixed to a flywheel 27a supporting the magnet of the generator 27. The fan 27b sucks outside air into the shroud 25 from an outside air inlet 25a provided in the shroud 25, and forcibly cools the engine 21. On the left side of the crankshaft 26, a one-way clutch 2
8 and a drive pulley 29 of the transmission 24 are attached. The driving pulley 29 is composed of a movable pulley half 29a and a fixed pulley half 29b arranged to face each other.
9a is provided on the crankshaft 26 so as to be slidable in the axial direction,
The fixed pulley half 29b is fixed to the crankshaft 26. The movable pulley half 29a slides toward the fixed pulley half 29b side according to the rotation speed of the engine 21 and increases the winding radius of the V-belt 30 when the speed is increased.
If the rotation speed is reduced, the V-belt 30 is slid in a direction away from the fixed pulley half 29b to reduce the winding radius of the V-belt 30. The torque of the driving pulley 29 is transmitted to the driven pulley 31 via the V-belt 30.

Hereinafter, the structure around the driven pulley 31 will be described with reference to FIG.
This will be described with reference to FIG. FIG. 3 is a partially enlarged cross-sectional view around the driven pulley 31 in the V-belt type continuously variable transmission 24. The movable pulley half 31b is located on the fixed pulley half 31a side with respect to the center line C1 on the left side. In addition, the state where the centrifugal clutch 35 is disengaged is shown. On the right side of the center line C1 , the movable pulley half 31b moves toward the centrifugal clutch 35 against the force of the spring 34, and the centrifugal clutch 35
Indicates a state where they are connected. Driven pulley 31
Is composed of a fixed pulley half 31a fixed to a support cylinder 33 loosely fitted to the driven shaft 32, and a movable pulley half 31b provided on the support cylinder 33 so as to be slidable in the axial direction. The movable pulley half 31b of the driven pulley 31 is constantly urged toward the fixed pulley half 31a by a spring 34, but the spring 34 is moved in accordance with a change in the winding radius of the V-belt 30 on the drive pulley 29. Is configured to be able to change the winding radius of the V-belt 30 by sliding in the direction away from the fixed pulley half 31a, that is, toward the centrifugal clutch 35 against the force of. The rotational force transmitted to the driven pulley 31 is transmitted to a weight support 35a of the centrifugal clutch 35 via a support cylinder 33 integrally formed with the fixed pulley half 31a. The weight support 35a rotatably supports a plurality of weights 35b outward in the radial direction. When the rotation speed of the weight support 35a, that is, the rotation speed of the driven pulley 31 exceeds a certain speed, the weight 35b turns outward, and the weight support 35a and the weight 3
5b comes into frictional contact with the cover 35c surrounding the periphery of the cover 5b.
5c is rotated. The cover 35c is fixed to the driven shaft 32 by a nut 35d and a receiving cylinder 35e. Therefore, the rotation speed of the driven pulley 31, that is, the engine 21
When the rotation speed exceeds a certain speed, the weight 35b and the cover 35c come into frictional contact to rotate the driven shaft 32. The rotational force transmitted to the driven shaft 32 is
Reduction gear body 36 via a gear 32a formed at the tip of
And transmitted to the rear wheel drive shaft 15 via a drive gear 15 a provided on the rear wheel drive shaft 15.

The rear wheel 14 of the transmission case 23 described above is used.
The drive motor 40 and the motor 40
A motor drive unit 42 that accommodates a power transmission system 41 that transmits the rotational force to the rear wheel 14 is provided. The motor drive unit 42 has a front part which is the aforementioned shroud 2.
5 and the transmission 2 of the rear wheel drive shaft 15 at the rear
4 is supported at the opposite end. Hereinafter, the configuration of the motor drive unit 42 will be described with reference to FIGS. FIG. 4 is a schematic side view of the motor drive unit 42, which is partially broken for explanation. FIG. 5 is a developed cross-sectional view along the line AA in FIG. 4, and FIG. 6 is a partially enlarged view of the power transmission system 41 in FIG. 1 and 4
As shown in FIG.
And is arranged below the engine 21 so as to be cooled by traveling wind during traveling. A plurality of cooling fins 42a are formed in a portion of the motor drive unit 42 that houses the drive motor 40,
The cooling of the drive motor 40 is assisted. The drive motor 4
The power transmission system 41 connected to the output shaft 40a of the rear wheel drive shaft 1 does not overlap with the axis of the rear wheel drive shaft 15.
5 offset. The drive motor 40 is driven by the battery 6 described above. The power transmission system 41 includes a reduction gear 43 and a switching mechanism 44, and transmits the torque of the drive motor 40 to the rear wheel drive shaft 15. A gear 4 is provided at the end of the output shaft 40a of the motor 40.
0b is fixed with bolts (no symbol), and the gear 40b is engaged with the reduction gear 43a. When the gear 43a is rotated by the motor 40, the shaft 43b is rotated via the gear 43a. Rotate. The shaft 43b is disposed below the rear wheel drive shaft 15.

The switching mechanism 44 has a rotating shaft 44b whose both ends are supported by the transmission case 42. The rotating shaft 44b
, The reduction gear 44a is fixed by appropriate fixing means such as spline fitting. The rotation shaft 44b is arranged between the rear wheel drive shaft 15 and the shaft 43b so as to be offset from the rear wheel drive shaft 15. The rotating shaft 44b is formed in a cylindrical shape having a hole (no reference numeral) penetrating therethrough.
A slit 44c extending in the axial direction is formed in the lower part. A switching shaft 44d is slidably inserted in the through hole of the rotating shaft 44b in the axial direction. At the lower end of the switching shaft 44d, an engaging pin 44e extending in a direction perpendicular to the shaft is fixedly provided. The engaging pin 44e protrudes to the outside of the rotating shaft 44b through the slit 44c. The engaging pin 44e is engaged with a switching gear 44f integrally provided in the rotational direction so as to be slidable in the axial direction on the rotating shaft 44b by using an appropriate engaging member such as a circlip (no symbol). Have been. As a result, the switching gear 44f is switched to the switching shaft 44d.
Along with the vertical movement of, slides up and down within the range of the slit 44c. A spring 44g is provided below the engagement pin 44e.
The switching shaft 44d is constantly urged upward by the switching shaft 4d.
It is stopped by a switching lever 44h provided at the upper end of 4d. One end of the switching lever 44h is rotatably supported by the motor drive unit 42. The switching lever 44h is always urged upward by an elastic member such as a spring (not shown), and is rotated by a rotation stopping ball 44j.
6 is configured to stop at one of the position indicated by the solid line and the position indicated by the dashed line.

FIGS. 5 and 6 show the switching mechanism 44 in a state where the switching mechanism 44 is separated from the center line C2 into left and right parts.
In the state on the left side of the upper center line C2 in FIGS.
4h is up, and accordingly, the switching shaft 44d
Also rises by the action of the spring 44g and the switching gear 44
f is in a free state. This state is a so-called motor drive OFF state in which the rotational force of the drive motor 40 is not transmitted to the rear wheel drive shaft 15. This motor drive OF
When the switching lever 44h is rotated downward from the F state and is fixed at the position indicated by the one-dot dashed line in FIG. 5, the switching shaft 44d also slides downward against the force of the spring 44g. Switching axis 4
With the downward sliding of 4d, the switching gear 44f is also slid downward, and meshes with the rear wheel drive gear 45 integrally fixed to the rear wheel drive shaft 15 with a suitable fixing member such as a bolt. . When the switching gear 44f meshes with the rear wheel drive gear 45,
The rotational force of the drive motor 40 is transmitted to the rear wheel drive gear 45 to rotate the rear wheel drive shaft 15. This state is a state on the right side of the center line C in FIGS. 5 and 6, which is a so-called motor drive ON state.

The motor drive unit 42 having the above-described structure is used to drive the rear wheel drive gear 4 from the drive motor 40.
5 is provided as an integrated unit including a removable cap 4 at a position facing the rear wheel drive shaft 15.
6 are provided. Therefore, this motor drive unit 4
When removing the rear wheel drive shaft 15 from the second, the cap 46 is removed, the end of the rear wheel drive shaft 15 is exposed, and the bolt 47 is removed to separate the motor drive unit 42 and the rear wheel drive shaft 15. The maintenance and the like of the rear wheel 14 can be easily performed. When the vehicle is driven by the engine 21, the hybrid power unit 20 configured as described above uses the switching mechanism 44 to
The motor 21 is turned off, the rear wheels 14 are driven via the transmission 24 in the transmission case 23, and when the vehicle is driven by the drive motor 40, the engine 21 is stopped and the centrifugal clutch 32 is disengaged. Pulley 29,3
1 to the rear wheel drive shaft 1
5 and the switching mechanism 44 is set to the motor drive ON state to transmit the rotational force of the drive motor 40 to the rear wheel drive shaft 15 via the reduction gear group 43 and the like.
Drive.

In the present embodiment, the cooling fins 42a of the motor drive unit 42 are formed so as to extend in the vertical direction. However, the cooling fins 42a are not limited to the present embodiment and assist in cooling the drive motor 40. If possible, it may be provided in any shape and direction. For example, if it is provided so as to extend in the running direction of the vehicle, there is an effect that the cooling performance is further improved. In this embodiment, since the drive motor 40 and the power transmission system 41 are provided on the opposite side of the transmission case 23 with the rear wheel 14 interposed therebetween, there is an effect that the right and left balance when mounted on the vehicle is improved. Further, in the present embodiment, since the motor drive unit 42 is configured so that the drive motor 40 is located below the engine 21, the drive motor 40 can be cooled by the traveling wind during traveling. In addition, since the center of gravity of the vehicle can be lowered when mounted on the vehicle, the effect of improving the stability of the vehicle is also achieved. Further, in the present embodiment, the power transmission system 41 of the motor drive unit 42 is
It is arranged to be offset from the axial direction of the rear wheel drive shaft 15 when mounted on a vehicle, and a cap 46 is provided at a portion corresponding to the axial direction of the rear wheel drive shaft 15 of the unit 42, and the cap 46 is simply removed. With rear wheel drive shaft 1
5 so that the end face of the rear wheel drive shaft 15 can be exposed.
Is attached to the motor drive unit 42 using the bolt 47 at the position of the end, so that the rear wheel drive shaft 15 and the motor drive unit 42 can be easily attached and detached, and the maintenance of the rear wheel 14 can be performed. And the like can be easily performed. Further, the hybrid power unit 20 of the present embodiment extends the rear wheel drive shaft 15 of the engine 21 having the conventional V-belt continuously variable transmission 24 to the opposite side of the transmission 24, and Since the motor drive unit 42 is attached to the extended portion of the drive shaft 15, it can be manufactured relatively easily from a power unit used in a conventional vehicle.

[0015]

According to the present invention, a hybrid power unit for a motorcycle having a motor and an engine is provided from an engine and a crankcase of the engine having a V-belt type power transmission system housed therein toward a rear side of the vehicle body. An extended power transmission case is integrally formed, and a motorcycle power unit configured to support a rear wheel at a rear portion of the power transmission case, wherein one end of a drive shaft of a rear wheel is moved in a direction opposite to the power transmission case. A motor drive unit that extends and has a motor and a power transmission system that transmits the power of the motor to the drive shaft as one unit is disposed on the opposite side of the V-belt type power transmission device with the rear wheel interposed therebetween. Position, the extended end of the drive shaft is supported by the motor drive unit, and both the V-belt type power transmission system and the power transmission system for the motor are provided. Since it configured to be driven by either the power of the motor and the engine by performing power switching between the dynamic to the rear wheel shaft from the conventional engine
Motor drive unit without changing the force transmission configuration
Can be mounted. Therefore, there is an effect that the motor drive unit can be attached to an existing engine-driven power unit and changed to a hybrid-type power unit without a major design change. Also, a hybrid power unit for a motorcycle including the motor and the engine according to the present invention is a motor-driven hybrid power unit.
Power unit to the motor and the power of the motor to the drive shaft.
And the moving power transmission system as one unit,
The motor drive unit is connected to the V-belt type power
Since it is provided on the opposite side of the rear wheel of the transmission system,
The motor drive unit can be easily removed by itself
And the maintenance of the motor drive unit is simplified. Furthermore, the motor drive
At least part of its motor
The vehicle is located below the engine,
When mounted on both, the center of gravity of the vehicle can be lowered,
The stability of both can be further improved.

[Brief description of the drawings]

FIG. 1 is a screen provided with a motor and an engine according to the present invention.
It is a schematic side view of a chromatography data.

FIG. 2 is a schematic cross-sectional view of a hybrid power unit 20.

FIG. 3 is a partially enlarged cross-sectional view around a driven pulley 31 in a V-belt type continuously variable transmission 24.

FIG. 4 is a schematic side view of a motor drive unit.

FIG. 5 is a developed sectional view taken along line AA in FIG. 4;

FIG. 6 is a partially enlarged view of a power transmission system 41 in FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Scooter type motorcycle 2 Body frame 2a Head pipe 2b Down tube 2c Back tube 3 Steering shaft 4 Front fork 5 Front wheel 6 Battery 7 Fuel tank 8 Seat 9 Helmet 10 Storage space 11 Body cover 12 Muffler 13 Exhaust pipe 14 Rear wheel 15 Rear Wheel drive shaft 15a Drive gear 20 Hybrid power unit 21 Engine 22 Crankcase 23 Transmission case 24 V belt continuously variable transmission 25 Sheroud 25a Open air intake 26 Crankshaft 27 Magnet type generator 27a Flywheel 27b Fan 28 One-way clutch 29 Drive pulley 29a Movable pulley half 29b Fixed pulley half 30 V belt 31 Driven pulley 31a Fixed pulley half 31b Movable pulley half 32 Driven shaft 33 Support Holding cylinder 34 Spring 35 Centrifugal clutch 35a Weight support 35b Weight 35c Cover 35d Nut 35e Reception cylinder 36 Reduction gear body 40 Drive motor 40a Output shaft 40b Gear 41 Power transmission system 42 Motor drive unit 43 Reduction gear group 43a Reduction gear 43b Shaft 43c Reduction gear 44 Switching mechanism 44a Reduction gear 44b Rotary shaft 44c Slit 44d Switching shaft 44e Engagement pin 44f Switching gear 44g Spring 44h Switching lever 44j Detent ball 45 Rear wheel drive gear 46 Cap 47 Bolt

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-6-64451 (JP, A) JP-A-3-104795 (JP, A) JP-A-5-26328 (JP, A) JP-A-3-263 208771 (JP, A) JP-A-4-292284 (JP, A) JP-A-6-321170 (JP, A) JP-A-7-242190 (JP, A) JP-A-60-124525 (JP, A) JP-A-63-232092 (JP, A) JP-A-63-180583 (JP, A) JP-A-3-114449 (JP, U) JP-A-2-60694 (JP, U) JP-B-63-24190 (JP, B1) US Pat. No. 4,397,369 (US, A) UK Patent Application Publication No. 2,265,588 (GB, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) B62M ⁷ /00-7/14 B62M 23 / 00-23/02 B60K 6/00-6/12 B60K 8/00

Claims (3)

(57) [Claims] An engine (21) and a transmission case (23) extending from one side of a crankcase (22) of the engine containing a V-belt type power transmission system to the rear of the vehicle body are integrally formed. And a drive shaft (15) for a rear wheel (14) at the rear of the transmission case (23 ).
In motorcycle power unit that is configured to support the one end, one end of the rear divided shaft (15) is extended in a direction opposite to the transmission case, and a motor (40), a motor (40 motor drive unit with a power transmission system integrated into one unit that transmitting the power to the drive shaft (15) of), provided at a position on the opposite side across the rear wheel of the V-belt type power transmission system, the Extend the output shaft (40a) of the motor (40)
And the motor drive unit is connected to the output shaft (40) of the motor (40).
a) from the reduction gear (43) connected to a) and the rear wheel drive shaft (15).
And is supported by the case of the motor drive unit.
Rotating shaft (44b) and the deceleration fixed to the rotating shaft (44b).
A reduction gear (44a) meshing with the gear (43), and the rotating shaft (44b);
A switching gear (44f) provided slidably in the axial direction
The rear wheel drive fixed to the motor-side end of the rear wheel drive shaft (15)
And a switching gear (44f) detachably attached to the rear wheel drive gear (45).
Characterized in that it can be engaged with
A scooter equipped with a motor and an engine . 2. The reduction gear (43) A gear (40b) fixed to the tip of the output shaft (40a), A tooth reduction gear (43a) meshing with the gear (40b); A rotating shaft (43b) formed on the tooth reduction gear (43a), A reduction gear (43c) formed on the rotation shaft (43b); Composed of
The motor and engine according to claim 1, wherein
Scooter with. 3. The motor driving unit according to claim 1,
Also, part of the motor (40) is below the engine (10).
2. The apparatus according to claim 1, wherein
Scooter equipped with the above motor and engine.