JPH0372512B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a mounting structure for a cover portion that covers both sides of the front portion of a motorcycle body.

Usually, a cover part that covers both sides of the front part of the vehicle body extends to both sides of the front part of the fuel tank, and a structure is adopted in which the cover part and the fuel tank partially overlap each other.

In this structure, the front part of the cover member is connected to the radiator, etc., but the rear part of the overlap between the fuel tank and the cover member is not connected to any member, and wind pressure during driving acts on the cover member. There was an inconvenience that the entire structure was flapping, and the cover member protruded from the side of the fuel tank, creating a step, which was not aesthetically or functionally desirable.

By the way, this invention was made in view of the above-mentioned circumstances, and it prevents the cover member from flapping due to wind pressure during driving, and also prevents the rear end edge of the cover member from protruding from the side of the fuel tank. The aim is to provide motorcycles that are aesthetically and functionally optimal. In order to achieve such an object, this invention arranges radiators on the left and right sides of a single tank rail and down tube, fixes them to the tank rail and down tube, and connects the fuel between the steering head pipe and the seat. In a motorcycle in which a cover member is attached to both sides of the front part of the vehicle body where the tank is arranged, the rear part of the cover member is bent toward the center of the vehicle body, and the rear edge of the cover member is smoothly connected to the front side of the fuel tank. A stepped portion is formed between the fuel tank cover member mounting bracket and the front side surface of the fuel tank so that the fuel tank cover member mounting bracket and the front side surface of the fuel tank are joined flush with each other, so that the front bottom wall of the fuel tank tilts forward, the radiator tilts backward, and the fuel tank The front bottom wall of the radiator and the rear wall of the radiator are in a V-shape, and a window hole is provided in the rear part of the cover member bent toward the center of the vehicle body. It is formed to face the.

The present invention will be described in detail below based on the illustrated embodiments.

FIG. 1 is a side view of a motorcycle to which an embodiment of the present invention is applied, FIG. 2 is a plan view of the same, FIG. 3 is a partially sectional side view of the main parts, and FIG. 4 is a side view of the motorcycle shown in FIG. Line sectional view.

In FIG. 3, reference numeral 10 is a steering head pipe, and a tank rail 12 and a down tube 14 are welded to this head pipe 10. In Figures 1 to 4, 16 is a water-cooled engine, 18,
18a and 18b are a pair of left and right radiators, and 20 is a fuel tank disposed between the head pipe 10 and the seat 64. As shown in FIGS. 3 and 4, the radiator 18 is fixed to the tank rail 12 and the down tube 14 by bolts 22 and 24, respectively, at a position slightly diagonally below the head pipe 10. Cover members 32, 32a, and 32b are located on the side surfaces of the radiators 18a and 18b and cover both sides of the front portion of the vehicle body.

The front part of this cover member has brackets 34 and 3 projecting from the radiator 18 as shown in FIGS.
6, 36a, 36b by bolts, and the rear part of the cover member 32 is connected to a cover member mounting bracket 3 that projects from the wall 20a of the fuel tank 20.
8 with bolts. A stepped portion 20b is formed between the cover member mounting bracket 38 and the front side of the fuel tank 20, and the rear end edge of the cover member 32 is connected to the front side of the fuel tank 20 so as to form a smoothly continuous surface. ing. It should be noted that the front end of the cover member 32 extends forward as shown in FIGS. 2 and 4, making it easier to take in the wind when the vehicle is running. Further, the front bottom wall of the fuel tank is tilted forward and the radiator is tilted backward, so that the front bottom wall of the fuel tank and the rear wall of the radiator form a V-shape. (See Fig. 3) The cover member 32 is bent toward the center of the vehicle body behind the radiator 18, and a substantially triangular window 40 is formed near this bent portion to face the V-shaped portion. There is. (See Figure 1). radiator 18
The wind passing through the vehicle is. It is discharged through this window 40.

In FIGS. 1 to 3, 42, 42a, and 42b are a pair of left and right front forks. The upper ends of these front forks 42 are attached to the head pipe 10 via an upper bracket 44 and a lower bracket 46 so as to be able to turn left and right. 48
50 is the front wheel attached to the lower end of the front fork 42, and 52 is the lower bracket 46.
It is a mudguard fixed to the

54 is a wind blower, near the head pipe 10;
That is, the left and right front forks 42a sandwiched between the upper bracket 44 and the lower bracket 46,
42b. The air baffle 54 includes a plurality of air baffle plates 58 that connect the guide plates 56, 56a, and 56b.
6, 56a, and 56b. Furthermore, in this embodiment, a mesh-like number display board 60 is positioned in front of the air blower 54 on the brackets 44 and 4.
It is fixed at 6.

Also, in Figures 1 and 2, 62 is the rear wheel, and 66 is the rear wheel 62.
68 is an exhaust silencer.

Next, the operation of this embodiment will be explained. While driving, the wind passes through the mesh of the Zetsuken display board 60 and reaches the wind guide plate 5.
8, the flow direction of the traveling wind changes diagonally downward, the passage area is narrowed by the baffle plate 58, the wind speed increases, and the cover member 32 moves the radiator 18
To surely pass through a radiator 18 without detouring. Furthermore, the cover member 32 takes in the wind from below the lower bracket 46 and guides it to the radiator 18, so that the cooling performance of the radiator 18 is further improved. The running wind that has passed through the radiator 18 is guided to the cover member 32 and the wall 20a of the fuel tank 20, and most of it is exhausted from the window 40 of the side plate 32, while the remainder is guided by the wall 20a and flows below the tank 20. flows.

In this way, even if wind pressure acts on the cover member while the vehicle is running, the cover member will not flap, and the wind will flow smoothly over the cover member and the sides of the fuel tank without being disturbed.

As described above, this invention eliminates the level difference between the cover member and the front side of the fuel tank, so that it is possible to prevent the airflow along the side of the fuel tank caused by the level difference from being disturbed (in other words, to prevent the airflow from being disturbed). Furthermore, since the cover and the side surface of the fuel tank are flush with each other, the appearance can be improved, which is a unique effect.

Furthermore, the radiator is placed on both the left and right sides of the tank rail and down tube, and is fixed to the tank rail and down tube, increasing the radiator capacity.In addition, the front bottom wall of the fuel tank is tilted forward. However, the radiator is tilted backwards so that the front bottom wall of the fuel tank and the rear wall of the radiator form a V-shape, and a window hole is formed in the rear part of the cover member bent toward the center of the vehicle body. By arranging this window hole to face the V-shaped part, the opening area of the window hole (window hole for blowing through the vehicle wind) of the cover member can be increased, and the fuel Since the front bottom wall of the tank is tilted forward, this front bottom wall acts as a blocking wall for the running wind, and the opening area of the window hole in the cover member can be increased, allowing air to pass through the radiator. Cooling air blows smoothly through the window holes, preventing hot air from being sent inside the car body, thereby extending the life of electrical components installed inside the car body. It is.

Furthermore, since there is no step between the surface of the cover member and the surface of the fuel tank, there is no problem of damage caused by the rider's legs coming into contact with the step when the rider leans forward of the seat. .

[Brief explanation of drawings]

FIG. 1 is a side view of a motorcycle to which an embodiment of the present invention is applied, FIG. 2 is a plan view of the same, FIG. 3 is a partially sectional side view of the main parts, and FIG. A line sectional view, and FIG. 5 is a perspective view of the wind blower. 10... Steering head pipe, 16...
Water-cooled engine, 18...Radiator, 20...Fuel tank, 20b...Step, 32...Cover member, 38...Cover member mounting bracket, 64...
...Sheet.

Claims (1)

[Claims] 1. A vehicle body in which radiators are arranged on both the left and right sides of a single tank rail and a down tube, fixed to the tank rail and the down tube, and a fuel tank is arranged between a steering head pipe and a seat. In a motorcycle with a cover member attached to both sides of the front part, the rear part of the cover member is bent toward the center of the vehicle body, and the rear end edge of the cover member is joined to the front side surface of the fuel tank in a smooth, continuous and flush manner. A step is formed between the cover member mounting bracket of the fuel tank and the front side of the fuel tank so that the front bottom wall of the fuel tank tilts forward, the radiator tilts backward, and the front bottom wall of the fuel tank and the front bottom wall of the fuel tank tilt. The rear wall of the radiator has a V-shape, and a window hole is provided in the rear part of the cover member bent toward the center of the vehicle body, and this window hole is opposed to the V-shaped part. A motorcycle whose characteristics are: