JPH0641267B2 - Auxiliary equipment support device for motorcycle engine - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a support device for supporting an accessory for an engine on a vehicle body frame in a motorcycle.

(Prior Art) In a motorcycle, an engine is supported on a body frame, and engine accessories such as an air cleaner and a carburetor are attached to the body frame and the engine.

(Problems to be Solved by the Invention) When assembling the above-mentioned auxiliary equipment to a vehicle body frame or an engine, since each component is arranged compactly in a motorcycle, it is possible to perform the assembling work in a narrow space. Required.

Therefore, in order to facilitate this assembling work, it is desirable to change the posture of the body frame and the engine supported by the body frame to the posture in which the auxiliary machinery can be easily assembled, but these body frames and engines are bulky. Since it is a heavy object, it is difficult to change these postures each time each auxiliary machine is assembled.

Therefore, it is required to separately assemble the auxiliary equipment in a posture restrained by the postures of the vehicle body frame and the engine, and this assembling work is complicated.

Further, in the above-mentioned conventional structure, the supporting means for assembling each auxiliary machine to the vehicle body frame is separately provided, and therefore the structure is complicated.

(Object of the Invention) The present invention has been made by paying attention to the above circumstances, and makes it easy to assemble an engine accessory to a vehicle body frame of a motorcycle, and The purpose is to support an auxiliary machine such as an air cleaner with a simple structure.

(Structure of the Invention) A feature of the present invention for achieving the above object is that a bracket for supporting an engine with respect to a vehicle body frame is made detachable with respect to the vehicle body frame, and an auxiliary cleaner for an engine such as an air cleaner is attached to the bracket. The point is that the machine was supported.

Embodiment An embodiment of the present invention will be described below with reference to the drawings.

Reference numeral 1 is a motorcycle, and 2 is its body frame. The body frame 2 has a steering shaft tube 3 and a main frame 4 projecting rearward from the steering shaft tube 3 and having a rearward descending shape.

The main frame 4 is composed of a pair of left and right frame members 5 and 5 made of sheet metal and having a box-shaped cross section.

A front fork 6 is supported on the steering shaft tube 3, and a front wheel 7 and a handle 8 are supported on the front fork 6. An axle 10 of a rear wheel 9 is supported on the rear end of the main frame 4, and an external transmission 11 is attached to the rear wheel 9.
Is provided.

A vertically long power unit 12 that drives the rear wheels 9 is provided. The upper part of the power unit 12 is the main frame 4
The lower part of the power unit 12 and the rear end of the main frame 4 are connected to each other by a rear frame 13. 14 is a seat and 15 is a battery.

The power unit 12 includes a forced air-cooled two-cycle engine 16 and a power transmission device 17.

The engine 16 finances a crankcase 20 which supports a crankshaft 19 having a longitudinal axis, and a cylinder 21 which projects rearward from a rear surface of the crankcase 20. A flywheel magnet is provided at a lower end of the crankshaft 19. 22
Is attached.

The power transmission device 17 has a power transmission case 24 connected to the lower end of the crankcase 20. Inside the power transmission case 24, a centrifugal clutch coaxial with the crankshaft 19 and interlocked with the crankshaft 19. 25 and planetary gear means 26 are connected in series.

An output chain wheel 28 is supported on the lower part of the power transmission case 24, and the transmission 11 is linked to the output chain wheel 28 by a chain 29. A bevel gear means 30 is provided between the output chain wheel 28 and the planetary gear means 26. That is, a bevel gear 31 is attached coaxially with the output chain wheel 28, and a bevel pinion 3 meshing with the bevel gear 31 is provided on the output side coaxial with the planetary gear unit 26.
2 is attached.

Then, the power from the engine 16 is transmitted to the bevel gear means 30 via the centrifugal clutch 25 and the planetary gear means 26. Further, this power is transmitted to the transmission 11 via the output chain wheel 28 and the chain 29, where it is transmitted to the rear wheels 9 after being changed to a desired speed.

On the other hand, a pedal 36 for stepping operation is rotatably supported coaxially with the output chain wheel 28. The pedal 36 is stepped on by the rider on the seat 14, and the power from the pedal 36 is transmitted to the output chain wheel 28. The power is transmitted from the output chain wheel 28 to the chain 29 and further to the gear shift in the same manner as described above. It is transmitted to the rear wheel 9 via the device 11.

In the above case, the power from the engine 16 is transmitted to the pedal 36, and the power from the pedal 36 is transferred to the engine 1.
The output chain wheel 28, the bevel gear means 30, and a one-way clutch (not shown) are provided on the moving shaft so as not to be transmitted to the gear 6.

Next, the connecting portion of the power unit 12 to the main frame 4 will be described. An inverted U-shaped bracket plate 39 is provided in the front-rear halfway portion of the main frame 4. The upper and lower sides of the bracket plate 39 have left and right frame members 5,
5 is screwed with the first bolt 40, and both lower ends of the bracket plate 39 are screwed with the third bolt 42 to the projecting pieces 38, 38 projecting from the lower edges of the frame members 5, 5. Further, the both upper ends of the crankcase 20 are screwed to the lower ends of both sides of the bracket plate 39 by the second bolts 41.

As an auxiliary machine for the engine 16, a crankcase 20
The carburetor 44 is connected to the upper surface via the first intake pipe 43. An air cleaner 46 is connected to the carburetor 44 via a second intake pipe 45. The air cleaner 46 is disposed above the crankcase 20 and in the front portion inside the bracket plate 39, and both sides of the air cleaner 46 are screwed to the bracket plate 39 by the fourth bolts 50. Reference numeral 47 is an exhaust pipe, and a silencer 47a is provided in this pipe line.

Reference numeral 48 denotes a lubricating oil tank, which is arranged above the cylinder 21 and in the rear portion of the bracket plate 39.
The upper surface of 8 is screwed to the bracket plate 39 by the fifth bolt 52. A lubricating oil pump 54 is connected to the lower surface of the lubricating oil tank 48 via an oil absorbing pipe 53. The lubricating oil pump 54 is arranged between the upper surface of the crankcase 20 and the air cleaner 46, and is screwed to one side surface of the bracket plate 39 with a sixth bolt 55. Also,
The lower end front part of the lubricating oil tank 48 and the rear part of the lubricating oil pump 54 are screwed together by the seventh bolt 56.

Further, a CDI unit 57 is provided in the rear portion of the bracket plate 39, and is screwed to the other side surface of the bracket plate 39 by an eighth bolt 58.

(Effects of the Invention) According to the present invention, the engine supporting bracket is made detachable with respect to the vehicle body frame, and the engine and the auxiliary machine are supported in advance because the bracket supports the engine auxiliary machine such as the air cleaner. After they are attached to the vehicle body, they can be integrally attached to the body frame.

In the above case, since the bracket is bulky and light, the bracket can be mounted on the bracket in a desired posture so that the bracket can be easily mounted on the bracket, and then the engine can be mounted on the bracket before mounting them on the bracket. It can be attached to the body frame as a unit.

Therefore, assembling work becomes easier as compared with the case where the auxiliary machinery is individually assembled in the posture constrained by the posture of the vehicle body frame or the engine.

Further, since the existing brackets for supporting the engine on the vehicle body frame were used for assembling the above-mentioned auxiliary machinery,
It is not necessary to separately provide a supporting means for supporting the accessory on the body frame, and thus the accessory can be supported on the body frame with a simple configuration.

[Brief description of drawings]

1 shows an embodiment of the present invention, FIG. 1 is an overall side view of a motorcycle, FIG. 2 is a partially enlarged view of FIG. 1, and FIG.
FIG. 4 is a sectional view taken along the line III-III of FIG. 1 ... Motorcycle, 2 ... Body frame, 3 ... Steering shaft tube, 4 ... Main frame, 12 ... Power unit, 16 ...
... Engine, 39 ... Bracket plate, 33 ... Vaporizer (auxiliary machine), 46 ... Air cleaner (auxiliary machine), 48 ... Lubricating oil tank (auxiliary machine), 54 ... Lubricating oil pump (auxiliary machine),
57 …… CDI unit (auxiliary equipment).

Claims (1)

[Claims] 1. A bracket attached to a body frame,
In a motorcycle having an engine detachably supported, the above bracket is made detachable with respect to a vehicle body frame, and an engine accessory such as an air cleaner is supported by the bracket. apparatus.