JPH06270870A - Radiator of motorcycle - Google Patents

Abstract

PURPOSE:To avoide interference with an engine and bend radiators three- dimensionally so as to ensure capacity of the radiator and a bank angle by bending the radiators with a straight line on the same plane as them and in the oblique direction for them as a center. CONSTITUTION:An engine 10 of a motorcycle is covered by a cowling 11, and radiators 14 are provided on the right and left sides between them. The radiators 14 are mounted on a car body frame and the engine 10 by means of each bracket B1, B2, have each tank 15, 16 above and below them, and many water pipes 17 which connect them are connected by many fins 18. In this case, the radiators 14 are bent with a straight line on the same plane as them and in the oblique direction for them as a center. The lower part of the radiator 14 is tilted toward the engine 10 side on the whole and bent three- dimensionally so that a rear section 14a approaches the engine 10 side more than a front section 14b.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a motorcycle radiator.

[0002]

2. Description of the Related Art Some motorcycles are provided with a radiator on a vehicle body and circulate cooling water between the radiator and the engine to cool the engine. FIG. 8 shows a cross-sectional view of the front part of the vehicle body of such a conventional motorcycle, in which 100 is an engine, 101 is a front wheel, and a pair of radiators 102 are symmetrically provided on the left and right of the engine 100. (Because it is symmetrical, the one on the left side of the drawing is omitted.) 103 is a cowling provided from the front part to the side part of the vehicle body. The cowling 103 is located at the side of the engine 100 and at the lower side as shown in FIG. Located in
The radiator 102 is located between the cowling 103 and the engine 100. (It should be noted that, as an example in which a small radiator is provided inside the cowl, for example, Japanese Patent Laid-Open No. 2-7
(There is a 4484 publication)

[0003]

By the way, in such a structure, when it is attempted to extend the vertical length of the radiator 102 downward in order to increase the capacity of the radiator 102,
The lower end of the radiator 102 interferes with the slanted portion 103c between the side portion 103a and the lower portion 103b of the cowling 103, and the slanted portion 103c must be lowered. Therefore, in such a conventional structure, there is a problem in that the bank angle of the motorcycle cannot be made large. Then, as shown in Fig. 9, the radiator 10
It is conceivable to bend 2 in the center part around the width direction line L of the radiator 102 to secure a bank angle, but if the radiator 102 is simply bent in this way, the radiator 102 is There is a risk of interfering with 100.

[0004]

In order to solve the above-mentioned problems, the present invention relates to a motorcycle having a radiator mounted on a vehicle body, wherein the radiator is located in the same plane as the radiator and in an oblique direction with respect to the radiator. It is characterized by being formed by bending a straight line.

[0005]

According to the present invention, since the radiator is bent around a straight line located in the same plane as the radiator and obliquely to the radiator, the radiator can be formed by bending in three dimensions. It becomes possible to bend the radiator while avoiding the engine, and while securing the radiator capacity, it is not necessary to lower the diagonal part of the cowling, and the bank angle can be secured.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is a side view of the motorcycle, FIG. 2 is a front view of the motorcycle, and FIG. 3 is an enlarged side view of essential parts of the motorcycle. In these drawings, 1 is a left and right main frame, 2 is a fuel tank supported by the vehicle body frame 1, 3 is a front fork, 4 is a front wheel supported by the front fork 3, 5 is a rear arm, and 6 is a rear arm 5. The rear wheel, 7 is a seat, and 8 is a steering wheel. An engine 10 is arranged in the left and right body frames 1 and 1 as shown in FIG.
The engine 10 is a so-called V-type engine in which the cylinders 10a and 10b project forward and backward. A cowling 11 is attached to the front part or the side part of the vehicle body. As shown in FIG. 1, the cowling 11 is composed of an upper portion 11a and a lower portion 11b. Also, as shown in FIG. 2, the cowling 11 is an upper portion of the vehicle body. Has the largest width, the width gradually narrows toward the bottom, and the width gradually narrows toward the rear of the vehicle body. This cowling 11
An opening 12 for introducing cooling air having a large width in the vertical and horizontal directions is formed on the front surface of, and openings 13, 13 for discharging the cooling air are formed on the side surface of the cowling 11.

Radiators 14 and 14 are arranged on the left and right sides of the engine 10. FIG. 4 is a front view of the radiator 14, FIG. 5 is a view taken in the direction of arrow 5 in FIG. 4, and FIG. 6 is a perspective view of the radiator 14. Show. The radiator 14 includes a bracket B1,
It is attached to the vehicle body frame 1 and the engine 10 via B2, and also has tanks 15 and 16 at the top and bottom, and these tanks 15 and 16 are connected by a water pipe 17 extending in the vertical direction. A plurality of the water pipes 17 are arranged at regular intervals in the width direction of the radiator 14, and these water pipes 17 are connected by a large number of fins 18 extending laterally. A connection pipe 19 that communicates with the engine 10 side and introduces cooling water from the engine 10 side into the tank 15 is provided on a side surface of the tank 15, and a cooling water inlet 20 is provided on an upper surface of the tank 15. . Further, a connection pipe 21 for supplying the cooling water in the tank 16 to the engine 10 side is provided on the lower surface of the tank 16.

In the radiator 14 as described above, the lower portion from the substantially middle portion is bent toward the engine 10 side, whereby a large capacity of the radiator 14 can be secured. As shown in FIG. 4, this bend is on the same plane as the radiator 14 and is a straight line L1 oblique to the radiator 14.
In this embodiment, the straight line L1 is set from the lower left to the upper right as shown in FIG. Therefore, the lower portion of the radiator 14 is inclined toward the engine 10 side as a whole as shown in FIG. 7, and the rear portion 14a is closer to the engine 10 side than the front portion 14b.
Bends dimensionally.

According to the structure of this embodiment, the lower portion of the radiator 14 is first bent toward the engine 10 as a whole, so that the capacity is simply increased as in the conventional example shown in FIG. In comparison with the structure in which the radiator 102 is extended downward, the amount of protrusion of the radiator 14 downward (toward the ground) can be made as small as possible. Therefore, the diagonal portion 11c between the side and the lower side of the cowling 11 can be positioned above, and a sufficient bank angle can be obtained (in FIG. 7, L2 indicates a bank angle line).
On the other hand, since the radiator 14 is bent three-dimensionally as described above, it is possible to avoid that all of the lower portion of the radiator 14 projects toward the engine 10 side at the same angle, especially the front portion of the lower portion of the radiator 14. 14b engine 1
The protrusion to the 0 side is minimal. Therefore, as in the conventional example shown in FIG.
In the structure bent to the 00 side, the radiator 102 interferes with the engine 100, but in the structure of the present embodiment, such a problem does not occur, and even if the radiator 14 is bent, the radiator 14 interferes with the engine 10. Can be prevented. In addition, by bending the radiator 14 as described above, the radiator 14 is attached to the cowling 11
It is possible to form a shape that conforms to (a shape in which the width gradually narrows toward the rear), and it is possible to arrange the radiator 14 along the inner surface of the cowling 11. Therefore, the radiator 14 can be arranged even if the gap between the engine 10 and the cowling 11 is small.

[0010]

As described above, according to the present invention, since the radiator is bent around a straight line located in the same plane as the radiator and oblique to the radiator, the radiator is three-dimensional. It can be formed by bending it flexibly, and it is possible to bend the radiator while avoiding the engine, while securing the capacity of the radiator while making it unnecessary to lower the diagonal part of the cowling and securing the bank angle. it can.

[Brief description of drawings]

FIG. 1 is a side view of a motorcycle.

FIG. 2 is a front view of the motorcycle.

FIG. 3 is an enlarged side view of a main part of the motorcycle.

FIG. 4 is a front view of a radiator.

5 is a view on arrow 5 of FIG.

FIG. 6 is a perspective view of a radiator.

FIG. 7 is a transverse cross-sectional view of the front portion of the motorcycle showing the arrangement of radiators.

FIG. 8 is a perspective view of a transverse cross-sectional view of the front portion of the motorcycle for showing the arrangement of a conventional radiator.

FIG. 9 is a perspective view of a cross-sectional view of the front portion of the motorcycle for showing the arrangement of a conventional radiator.

[Explanation of symbols]

 11 ... Cowling 14 ... Radiator L1 ... Bending center line

Claims (2)

[Claims] 1. A motorcycle having a radiator attached to a vehicle body, wherein the radiator is formed by bending a straight line that is located on the same plane as the radiator and is oblique to the radiator. Motorcycle radiator. 2. A cowling is provided in front of the vehicle body, the radiator is arranged inside the cowling, and the radiator is formed by bending in accordance with the shape of the cowling and is arranged along the inner surface side of the cowling. The motorcycle radiator of claim 1, wherein the radiator is a motorcycle.