JPH02197482A - Body part mounting structure for motorcycle - Google Patents

Abstract

PURPOSE:To prevent damage of a cowling simplified in constitution by mounting to the outer side surface of a car body frame a tank connecting to side surface an internal surface of the cowling, in the case of a motorcycle provided with the cowling and the elastic tank. CONSTITUTION:A resin-made lubricating oil tank 35 is provided in the outer side surface of a left side main frame 4. This tank 35 connects to its outer side surface a left side part cowl 31b brought into press contact with the tank through a sponge 39. Similarly, a right side part cowl is mounted to a right side main frame through a cooling water recovery tank. By this constitution, the cowl can be prevented from damage.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a structure for mounting body parts of a motorcycle equipped with a cowling or an elastic tank.

(Prior Art) Many motorcycles are equipped with resin cowlings for reasons such as reducing running resistance (for example, Japanese Patent Application No. 60-215466 and drawings). (Problems to be Solved by the Invention) Incidentally, while a motorcycle is running, foreign objects such as stones may collide with the cowling, but if the cowling is made of resin as described above, the impact caused by the collision will be This can easily be damaged.

(Purpose of the Invention) This invention was made in view of the above-mentioned circumstances, and provides an object to prevent the cowling from being damaged by the above-mentioned impact, and to achieve this prevention of damage with a simple structure. The purpose is to do so.

(Structure of the Invention) A feature of the present invention for achieving the above object is that, while a cowling is provided to cover the body frame from the outside, a motorcycle equipped with an elastic tank such as an oil tank is provided with a cowling that covers the body frame from the outside. The tank is attached to the outside surface, and the inner surface of the cowling is joined to the tank side.

(for production) The effects of the above configuration are as follows.

When a foreign object such as a stone collides with the cowling 31 and the cowling 31 receives a shock, this shock is absorbed by the elastic oil tank (tank) 35 and the recovery tank (tank) 41 and is cushioned. to prevent damage.

(Example) Embodiments of the present invention will be described below with reference to the drawings.

In FIGS. 2 to 4, ■ is a motorcycle, and 2 is its body frame. The vehicle body frame 2 has a head vibrator 3 at the front thereof, and a pair of left and right main frames 4.4 extend rearward and downward from the head vibrator 3, and extend downward from the rear end of each main frame 4. The rear arm bracket 6 extends.

A front fork 11 is supported on the head vibrator 3 so as to be steerable. A front wheel 12 is supported at the lower end of the front fork 11, and a handle 13 is attached to the upper end of the front fork 11. On the other hand, a rear arm 16 is pivotally supported on the left and right rear arm brackets 6.6 by a pivot shaft 15 so as to be vertically swingable, and a rear wheel (not shown) is supported at the swinging end of the rear arm 16.

Reference numeral 18 denotes a two-stroke parallel two-cylinder engine, and this engine 18 is equipped with brackets 4 protruding from each of the main frames 4.
a and the rear arm bracket 6 by a port 19. The engine 18 has a crankcase 20 that houses a crankshaft, and a pair of left and right cylinders 21 that protrude upward and forward from the crankcase 20. A carburetor 22 is attached to the front side of each cylinder 21. It is being A fuel tank 23 for supplying fuel to this carburetor 22 is also provided, and this fuel tank 23 is supported on the main frame 4.4.

A radiator 24 is provided above the front of the engine 18 . This radiator 24 is for cooling the cooling water after cooling the cylinder 21 with the running wind, and is formed in a flat V-shape so as to be inclined forward as it advances toward each side in plan view. . And with this,
When the traveling wind passes through this radiator 24, it is guided outward as it moves backward, as shown by arrow A in FIG. Further, in FIG. 3, 25 is a thermostat, and this thermostat 25 controls the cooling water so that it is at an appropriate temperature.

31 is a resin cowling, and this cowling 31 includes a front cowl 31a that covers the front of the vehicle body, and this front cowl 3.
It is composed of left and right side cowls 31b, 31b extending rearward from both left and right sides of the main frame 4.1a. The engine 18 and the radiator 24 are layered from the outside.

In FIGS. 2 to 5, an air vent hole 3 is provided in the upper part of the side cowl 31b slightly behind the radiator 24.
2 is formed. This air vent hole 32 is
As described above, the running wind that has passed through the radiator 24 and has been guided outward is smoothly discharged to the outside of the cowling 31 as shown by arrow B in FIGS. 2 to 4.

In FIGS. 2, 3, and 6, an air introduction hole 33 is formed in the lower part of the upper side cowl 31b.

The air introduction hole 33 smoothly introduces the running wind into the cowling 31 as shown by arrow C in each figure, and this air cools the exhaust pipe (not shown) of the engine 18, etc. do.

1 to 4, 7, and 8, an oil tank 35 for storing lubricating oil is provided on the outer surface of the left main frame 4 of the main frames 4.4. This oil tank 35 is made of resin and has sufficient elasticity. Front and rear mounting pieces 36 and 36 are integrally molded on this oil tank 35, and each of these mounting pieces 36 is screwed to a resin grommet 37 attached to the main frame 4 with a bolt 38. Note that this grommet 37 may be made of metal.

Further, a sponge 39 serving as a cushioning material is attached to the outer surface of the oil tank 35, and the inner surface of the left side cowl 31b is pressed against the side of the oil tank 35 via the sponge 39. When the cowling 31 receives an impact, this impact is effectively absorbed and buffered by the oil tank 35i3 and the sponge 39.

2 to 4 and 9 to 12, a recovery tank 41 for replenishing cooling water to the radiator 24 is provided on the outer surface of the right main frame 4 of the main frames 4.4. This recovery tank 41 is made of resin and has sufficient elasticity. This recovery tank 4
1 is integrally molded with front and rear mounting pieces 42, 42, of which an extension piece 42a is screwed to the front mounting piece 42 with a bolt 42b, and this extension piece 42a and rear mounting piece 42 are attached to the main frame 4. It is screwed to a resin grommet 43 with a bolt 44. Note that the grommet 43 may be made of metal.

A sponge 45 serving as a cushioning material is attached to the outer surface of the recovery tank 41, and the inner surface of the right side cowl 31b is connected to the recovery tank 4 via this sponge 45.
It is pressed against the 1st side. Further, at this time, an insert nut 46 is embedded in the outer surface of the recovery tank 41, and the right side cowl 31 is inserted into this insert nut 46.
b is screwed with a bolt 48 via a rubber shock absorber 47.

When the cowling 31 receives an impact, the impact is effectively absorbed by the recovery tank 41, the sponge 45, and the buffer body 47, and the impact is alleviated.

Further, in the above case, the oil tank 35 and the recovery tank 41 are provided at positions corresponding to the air vent holes 32, respectively. The oil tank 35 and the recovery tank 41 prevent the running wind that has passed through the radiator 24 and reached a high temperature from flowing backward through the cowling 31, and directs this running wind to the air vent hole 3.
2 and discharge it to the outside.

Note that the sponges 39 and 45 may be omitted; in this case, the oil tank 3 is directly connected to the inner surface of the side cowl 31b.
5 or the recovery tank 41.

To explain the radiator 24 in more detail with reference to FIG. 2 and FIG.
It is screwed by 2. Also, this radiator 2
Both lower sides of the radiator 24 are removably screwed to the bracket 4a of the main frame 4 using support rods 53 and bolts 54, thereby firmly fixing the radiator 24 to the vehicle body frame 2 side.

A flexible cooling water tube 56 for feeding cooling water from the lower part of the radiator 24 to the cylinder 21 is bent into a crank shape. In addition, the return water after water-cooling the cylinder 21 is transferred to the radiator 24.
A flexible return water tube 57 is also provided in a slightly bent state, and the cooling water is circulated as shown by the arrow in FIG.

Additionally, 58 is a spark plug, and 59 is an intake pipe.

In the above configuration, loosen each bolt 52, 54 and
If the support rod 53 is removed as shown by the imaginary line in Figure 3, the radiator 24 can be rotated forward about the bolt 52 as shown by the arrow E in the figure. In this way, the working space for the spark plug 58 and the like located between the cylinder 21 and the radiator 24 becomes wider, and therefore the workability is improved.

Moreover, at this time, the cooling water tube 56 is inclined substantially linearly toward the rear and downward direction.

Therefore, when the cooling water is drained, the cooling water flows smoothly as indicated by the arrow F in FIG. 13, and this drainage can prevent residual water from being generated.

(Effects of the Invention) According to the present invention, since the tank is attached to the outer surface of the body frame and the inner surface of the cowling is joined to the tank side, foreign objects such as stones collide with the cowling while the motorcycle is running. When this cowling receives a shock, the elastic tank absorbs and cushions the shock. Therefore, damage to the cowling due to such impact is prevented.

Moreover, in the above case, since an elastic tank such as an oil tank was used to absorb the impact on the cowling, the above damage prevention can be achieved with a simple structure.

(Margin below)

[Brief explanation of the drawing]

The figures show an embodiment of this invention, and Fig. 1 is 1-1 in Fig. 7.
! ! Fig. 2 is a front view of the oil tank attached to the main frame; Fig. 2 is a front side view of the motorcycle;
Figure 3 is a front view, Figure 4 is a plan view, Figure 5 is the V of Figure 2.
-V line arrow sectional view, Figure 6 is Vl -Vl of Figure 2 of the same
7 is a partially enlarged view of FIG. 2, FIG. 8 is a partially sectional view of FIG. Figure 1O is a partial partial view taken along the line -) GI&! 13 is a front right side view of the motorcycle. ■...Motorcycle, 2...Body frame, 31-Cowling, 35...Oil tank (tank), 41...Recovery tank (tank). Figure 11

Claims (1)

[Claims] 1. In a motorcycle that is equipped with a cowling that covers the body frame from the outside and also has an elastic tank such as an oil tank, the tank is attached to the outside surface of the body frame, and the inner surface of the cowling is joined to the tank side. Motorcycle body parts mounting structure.