JPH05310174A - Driving gear of motorcycle - Google Patents

Abstract

PURPOSE:To keep the balance of weight between the right and left of a motorcycle so as to provide a high stability for driving by installing on one side of a small continuously variable automatic transmission wherein speed change and speed reducing planetary gears are assembled on both sides of torque convertors, and installing a motor on the opposite sides of the rear wheel. CONSTITUTION:A continuously variable automatic transmission wherein speed change planetary gears 8, 14, 15 and speed reducing planetary gears 16, 17, 18 are assembled on both sides of torque convertors 9, 11, 12 is installed on one side of a rear wheel 1 and the input shaft 7, intermediate shaft 6 and output shaft 5 of the continuously variable automatic transmission are disposed on the same axis and the input shaft 7 is passed through the output shaft 5 and the intermediate shaft 6 both of which are made hollow and the axle pipe 19 of the rear wheel 1 is mounted on the output shaft 5 and the drive shaft 22 of a motor 20 installed on the opposite side of the rear wheel 1 is connected to the input shaft 7.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drive unit for a motorcycle, in which a motor and a continuously variable transmission are mounted on both sides of a rear wheel, and the weight balance between the left and right is good and the steering stability is improved.

[0002]

2. Description of the Related Art In industrial machines, a continuously variable automatic transmission using a V-belt and a planetary gear is known. Also, in a four-wheeled vehicle, there is an automatic transmission that uses a torque converter and a planetary gear.

[0003]

A continuously variable automatic transmission using a V-belt and a planetary gear has a large device and is not suitable for a small motorcycle. Further, an automatic transmission using a torque converter and a planetary gear of a four-wheeled vehicle automatically shifts a stepped shift, not a continuously variable shift.

In view of such a point, the present invention has a small continuously variable automatic transmission in which planetary gears for speed change and speed reduction are incorporated on both sides of a torque converter, and is mounted on one side of a rear wheel, and on the opposite side of the rear wheel. The purpose of the present invention is to provide a motorcycle drive unit with a right-left weight balance and good steering stability by attaching a motor to the.

[0005]

In order to achieve the above object, a motorcycle drive device of the present invention is a continuously variable automatic transmission in which a speed-changing planetary gear and a speed-reducing planetary gear are incorporated on both sides of a torque converter. Is mounted on one side of the rear wheel, and the input shaft, intermediate shaft, and output shaft of the continuously variable automatic transmission are arranged coaxially, and the input shaft is passed through the hollow output shaft and intermediate shaft, and the rear The shaft cylinder of the wheel is attached, and the drive shaft of the motor mounted on the opposite side of the rear wheel is connected to the input shaft.

[0006]

[Function] Since a continuously variable automatic transmission with a planetary gear for speed change and a planetary gear for speed reduction incorporated on both sides of the torque converter on one side of the rear wheel is incorporated, it is automatically changed by the continuously variable automatic transmission for maneuvering operation. It is easy and you can drive easily. or,
Since a small continuously variable automatic transmission and a motor are mounted on the left and right sides of the rear wheels, the left and right weights are well balanced and steering stability is good.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIG. A rear fork 2 for suspending the rear wheel 1 has a case 3 of a torque converter provided on one side, and an outer case 4 is attached to the outer side. The output shaft 5, the intermediate shaft 6, and the input shaft 7 are arranged concentrically, and the input shaft 7 is rotatably passed through the hollowed output shaft 5 and intermediate shaft 6. The input shaft 7 is
The sun gear 8 for speed change is connected to the sun gear 8 for rotation by a spline so as to drive the sun gear 8 for speed change, the pump 9 and the oil pump 10 of the torque converter.
A stator 11 of the torque converter is attached and fixed to the case 3. A one-way clutch 13 is provided between the turbine 12 of the torque converter and the case 3.
Is installed. A speed change ring gear 14 is attached to the turbine 12, and a speed change planetary gear 15 is rotatably attached to the arm of the intermediate shaft 6.

On the other hand, the reduction ring gear 16 is fixed to the case 3, the reduction sun gear 17 is attached to the intermediate shaft 6, and the reduction planetary gear 18 is rotatably attached to the arm of the output shaft 5. The output shaft 5 includes a barrel 1 of the rear wheel 1.
Insert 9 and tighten. A motor 20 is attached to the rear fork 2 opposite to the rear wheel 1. A joint pipe 21 is attached to the input shaft 7, and when the drive shaft 22 of the motor 20 is inserted, the joint pipe 21 is rotatably connected to the joint pipe 21 by a spline, and the drive shaft 22 and the input shaft 7 are connected.
Are connected.

The drive shaft 22 of the motor 20 drives the speed changing sun gear 8, the torque converter pump 9 and the oil pump 10 via the input shaft 7. The speed changing sun gear 14 is the turbine 12 of the torque converter.
The turbine 12 is attached to the case 3 with the one-way clutch 13 on the case 3 and rotates only in the driving direction. The speed changing sun gear 8 causes the speed changing planetary gear 15 to rotate and revolves the intermediate shaft 6 around the speed changing sun gear 8. The intermediate shaft 6 is decelerated by the reduction sun gear 17, the reduction ring gear 16, and the reduction planetary gear 18, and drives the rear wheel 1 via the output shaft 5. The oil pump 10 feeds oil to the pump 9 and rotates the turbine 12 as the rotation increases. The turbine 12 increases the torque to rotate the speed change ring gear 14. Then, via the planetary gear 15 for gear shifting of the intermediate shaft 6, the ring gear 14 for gear shifting from the turbine 12 due to the reaction force applied to the sun gear 8 for gear shifting and the ring gear 14 for gear shifting.
When the driving force is increased, the speed change ring gear 14 is rotated and the intermediate shaft 6 is accelerated. Eventually, the speed changing sun gear 8 and the speed changing ring gear 14 rotate in the same manner, and a direct connection state is established. If the load suddenly increases while driving,
A difference in rotation between the turbine 12 and the pump 9 is generated, increasing the torque and decelerating.

[0010]

As described above, since the present invention is configured as described above, a small continuously variable automatic transmission mounted on one side of the rear wheel can automatically shift the gear, and the driving operation can be simplified. The motor 20 can be easily attached and detached by attaching and detaching the fastening bolts, and the rear wheel 1 can also be easily attached and detached by attaching and detaching the rear fork 2 on the opposite side. Since the continuously variable automatic transmission and the motor 20 are mounted on both sides of the rear wheel 1, the left and right weights are well balanced and the steering stability is good.

[Brief description of drawings]

FIG. 1 is a vertical plan view showing an embodiment of the present invention.

[Explanation of symbols]

 1 rear wheel 5 output shaft 6 intermediate shaft 7 input shaft 8, 14, 15 speed change planetary gear 9, 11, 12 torque converter 16, 17, 18 speed reduction planetary gear 19 shaft cylinder 20 motor 22 drive shaft

Claims (1)

[Claims] 1. A continuously variable automatic transmission incorporating a planetary gear for speed change and a planetary gear for speed reduction on both sides of a torque converter is mounted on one side of a rear wheel, and an input shaft, an intermediate shaft and an output of the continuously variable automatic transmission are mounted. The shafts are arranged coaxially, the input shaft is passed through the hollow output shaft and intermediate shaft, the rear wheel barrel is attached to the output shaft, and the drive shaft of the motor mounted on the opposite side of the rear wheel is the input shaft. A drive device for a motorcycle, characterized in that the drive device is connected to.