JPH0784138B2 - Power transmission device for saddle type vehicle - Google Patents

Description

The present invention relates to a power transmission device for a saddle type vehicle.

b. Conventional technology and its problems In a conventional power transmission device for a saddle-ride type vehicle, a differential device for driving front wheels, rear wheels, or front and rear wheels is separate from a casing that houses a clutch device and a transmission. It was stored in the casing.

Therefore, in the conventional straddle-type vehicle, the power transmission device occupies a large space, which is disadvantageous in terms of effectively utilizing the space and reducing the weight of the vehicle.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a power transmission device for a straddle-type vehicle that can effectively use a space and reduce weight.

c. Means for Solving the Problems In the present invention, in order to achieve the above object, the crankshaft 5a, 5b, the main shaft 6a of the transmission, the auxiliary shaft 6a,
The sub-transmission shaft 7a and the side shafts 8a and 8b of the differential gear are arranged side by side in a direction perpendicular to the vehicle traveling direction. One end of each end is the left casing 3 and the other end is the right casing 4.
And the clutch 9 and the clutch 11 are mounted respectively on the shaft ends of the crankshaft 5a and the main shaft 6a protruding from the right casing 4, and the generator 10 is mounted on the shaft ends of the crankshaft 5b protruding from the left casing 3 respectively. Further, the power unit is constructed by covering the open ends of the one-way clutch 9 and the clutch 11 with the right cover 12 and at least the open ends of the generator 10 with the left cover 13.

d. Embodiment Hereinafter, an embodiment of a power transmission device for a saddle type vehicle according to the present invention will be described in detail with reference to the accompanying drawings.

1 and 2 show one embodiment of the present invention.

The saddle riding type vehicle 1 of the present embodiment shown in FIG. 1 is a rear engine four-wheel drive vehicle.

As shown in FIG. 2, the saddle riding type vehicle 1 has casings 3 and 4 which are integrally formed with the crankcase portion 2 and are formed in a left and right split structure.

The casings 3 and 4 include the crankshafts 5a and 5b, the main shaft 6a and the subshaft 6b of the transmission 6, the shaft 7a of the subtransmission 7, and the rear wheel drive propeller shaft 7b.
And the side shafts 8a and 8b of the differential 8 are rotatably supported.

In this way, the one-way clutch 9 and the generator 10 are arranged at the outer ends of the crankshafts 5a, 5b supported by the casings 3, 4.

A clutch 11 is arranged at one outer end of the main shaft 6a of the transmission 6.

The one-way clutch 9 and the clutch 11 are covered with a cover 12.

In addition, the outer end of the crankshaft 5b, the other outer ends of the main shaft 6a and the sub shaft 6b of the transmission 6, and the shaft 7a of the sub transmission 7 and the other outer end of the transmission 13 are covered by the cover 13
It is rotatably supported on.

Further, the outer end of the crankshaft 5b and the outer end of the sub shaft 6b of the transmission 6 are covered with sub covers 14 and 15.

Furthermore, at appropriate places on the casings 3 and 4, the first
As shown in the figure, a reverse lever 16, a transmission gear shift lever 17, a sub transmission gear shift lever 18, and a diff lock lever 19 are provided.

In FIG. 1, 20 is a front-wheel drive power take-off device, 21 is a front-wheel differential device, 21a is a front-wheel drive propeller shaft, and in FIG. 2, 22 is a case mating surface, 23, 24 Is a cover split surface, 25 piston rod, 26 is a final driven gear, and 27 is a sliding wheel for differential lock.

FIG. 3 shows another embodiment of the power transmission device for a straddle-type vehicle according to the present invention, particularly for a front engine four-wheel drive vehicle.

The straddle-type vehicle 28 of the present embodiment has a casing 30 having a left-right split structure that is integral with the crankcase portion 29a of the engine 29, as is the case with the aforementioned embodiments.

In this casing 30, a crankshaft 31, a main shaft 32a and a subshaft 32b of a transmission 32, a shaft 33a of a subtransmission 33, a side shaft 34a of a front wheel differential device 34, and a rear wheel drive propeller shaft 35. Is rotatably supported.

In FIG. 3, 34b is a final driven gear, and 36 is a rear wheel differential device.

e. Effects of the Invention As described above, according to the power transmission device for a straddle-type vehicle according to the present invention, the crankshafts 5a, 5b, the transmission main shaft 6a, the auxiliary shaft 6a, and the sub-transmission shaft 7a, The shafts of the differential device and the side shafts 8a, 8b are arranged in parallel at right angles to the vehicle traveling direction, one end of each shaft is the left casing 3 and the other end is the right casing 4.
Each of the crankshaft 5a and the main shaft 6a is fitted with a clutch 9 and a clutch 11 on the shaft ends projecting from the right casing 4, and the crankshaft 5b is fitted with a generator 10 on the shaft ends projecting from the left casing 3. Further, the power unit is configured by covering the open ends of the one-way clutch 9 and the clutch 11 with the right cover 12 and at least the open end of the generator 10 with the left cover 13 to provide the following effects. Obtainable.

That is, according to the power transmission device of the straddle-type vehicle of the present invention, the size of the power transmission device can be reduced. Therefore, it is possible to effectively use the space of the vehicle and reduce the weight thereof.

[Brief description of drawings]

1 and 2 show an embodiment of a power transmission device for a straddle-type vehicle according to the present invention. FIG. 1 is a side view conceptually showing the power transmission device, and FIG. FIG. 3 is an enlarged sectional view, and FIG. 3 is a side view conceptually showing another embodiment of the power transmission system for a straddle-type vehicle according to the present invention. 1,28 …… Saddle-type vehicle, 2,29a …… Crank case part, 3,4,30 …… Casing, 5a, 5b, 31 …… Crank shaft, 6,32 …… Transmission, 6a, 32a …… Main shaft, 6b, 32b …… Secondary shaft, 8,34 …… Differential device, 8a, 8b, 34a …… Side shaft.

Claims (1)

[Claims] 1. A power transmission device for a saddle-ride type vehicle, comprising at least a clutch device, a transmission device, and a differential device in a casing formed integrally with a crankcase and having a left-right split structure. , 5b and transmission spindle 6
a, the auxiliary shaft 6a, the sub-transmission shaft 7a, and the side shafts 8a and 8b of the differential gear are arranged side by side in a direction perpendicular to the vehicle traveling direction, and one end of each shaft is the left casing 3 and the other end. The right casing 4
And the one-way clutch 9 and the clutch 11 are respectively attached to the shaft ends of the crankshaft 5a and the main shaft 6a protruding from the right casing 4, and the generator 10 is attached to the shaft ends of the crankshaft 5b protruding from the left casing 3. A straddle-type vehicle that is equipped with each of them, and further, covers the open ends of the one-way clutch 9 and the clutch 11 with a right cover 12, and at least covers the open ends of the generator 10 with a left cover 13 to form a power unit. Power transmission device.