JPH0777045A - Motorcycle radiator - Google Patents

Abstract

(57) [Summary] [Purpose] A fuel tank disposed behind the steering head pipe and a fuel tank disposed in front of the fuel tank with a gap therebetween and displaced from the vehicle body center line in the vehicle width direction. In a motorcycle including a vertically long radiator main body and a radiator side cover that covers the radiator main body from the side, it is possible to make it easier for the wind to enter the radiator and to prevent difficulty in knee grip. [Structure] The radiator side cover has its rear portion smoothly along the outer surface of the fuel tank, and its front portion is inclined so as to spread smoothly outward in front of the radiator main body, so that the radiator main body, the fuel tank, and the radiator side cover A cooling water pipe connected to the upper tank of the radiator body was arranged in the space surrounded by.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a radiator device for a motorcycle in which a vertically long radiator main body is arranged in front of a fuel tank.

[0002]

2. Description of the Related Art There is a motorcycle in which a radiator and a fuel tank are arranged behind a steering head pipe.
For example, Japanese Utility Model Laid-Open No. 56-73989 discloses a fuel tank in which a vertically long radiator main body is housed in the lower front portion. It is also disclosed that a side cover that covers the radiator is provided to facilitate knee grip.

[0003]

[Problems of the prior art] However, since the front edge of the side cover is curved inwardly of the width of the vehicle body along the outer shape of the fuel tank, there is a problem that traveling wind does not easily enter the radiator. is there.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances. A vertically elongated radiator is disposed in front of a fuel tank in the vehicle width direction, and the radiator is covered with a radiator side cover. In this case, it is an object of the present invention to provide a radiator device for a motorcycle in which traveling wind can be easily introduced into the radiator and the knee grip can be prevented from becoming difficult.

[0005]

According to the present invention, the object of the present invention is to provide a fuel tank disposed behind the steering head pipe with a space in front of the fuel tank and deviate from the vehicle body center line in the vehicle body width direction. In a motorcycle including a vertically long radiator main body arranged as described above and a radiator side cover that covers the radiator main body from the side, the radiator side cover has its rear portion smoothly along the outer surface of the fuel tank. The front portion of the radiator body is inclined so as to spread outwardly smoothly in front of the radiator body, and cooling is connected to an upper tank of the radiator body in a space surrounded by the radiator body, the fuel tank, and the radiator side cover. This is achieved by a radiator device of a motorcycle characterized by having a water pipe.

[0006]

1 to 6 show a first embodiment.
In the figure, 11 is a motorcycle. The motorcycle 11 has a cradle type frame including a steering head pipe (hereinafter referred to as “head pipe”) 13, a main pipe 15, a down tube 17, a seat rail 19, a connecting pipe 25, and the like.

Reference numeral 21 denotes an engine, which is mounted between the main pipe 15 and the down tube 17 which are a part of the frame. A front wheel 27 is supported by the head pipe 13 via a front fork 29.

Reference numeral 31 is a radiator main body, and 67 is a fuel tank. The fuel tank 67 is made of synthetic resin and is arranged behind the head pipe 13 across the main pipe 15. The fuel tank 67 has a mounting piece 71 and a recess 69 integrally formed on the front portion thereof (FIG. 3). The recess 69 is located in the lower front portion of the fuel tank 67 and opens downward to the left side (downward side). The recess 69 has a radiator body 31 attached to the frame as described later.
Are placed.

Reference numeral 73 denotes a metal mounting stay, one end of which is screwed to the end of the recess 69 of the fuel tank 67. The front end of the fuel tank 67 is attached by fastening the attachment piece 71 and the tip of the attachment stay 73 with bolts 75 while sandwiching the bracket 23 welded to the frame.

The rear portion of the fuel tank 67 is attached as follows, as shown in FIG. In FIG. 1, reference numeral 77 denotes a locking hook fixed to the upper surface of the rear portion of the fuel tank 67. 81 is a bracket for the seat rail 19
Is welded to. Another locking hook 83 is fixed to the upper surface of the bracket 81. And the fuel tank 67
The locking hook 77 of and the locking hook 83 of the bracket 81 are connected by a rubber band 79. The fuel tank 67
Is fixed to the main pipe 15 by a mounting piece 71, a mounting stay 73, and a rubber band 79.

As described above, the radiator body 31 is arranged in front of the fuel tank 67 attached to the frame, that is, in front of the recess 69 as follows. The radiator main body 31 is composed of an upper tank 33, a lower tank 35, and a heat radiation portion 34 provided between these tanks 33, 35. Reference numerals 37 and 37 denote projections, which are side plates 46 of the heat dissipation portion.
It is integrally molded with. The radiator main body 31 is cantilevered to the frame by screwing the projecting pieces 37, 37 onto the bracket 23 or the connecting pipe 25 with bolts 41, 43, respectively.

Reference numerals 45 and 45 are projecting pieces, which are the side plates 4 of the heat radiating portion.
7 is projected forward. This protrusion 45, 45
A frame 49 having air guide plates 55, 55, ... The frame body 49 is located in the vicinity of the front surface of the heat radiating portion, and the pins 51 provided on the outer surface of the frame body 49 are fitted into the locking holes of the side plate 46 (FIG. 4), and the projecting pieces 45, 4 are provided.
It is screwed to the bolt 5 by bolts 53, 53.

1 and 4, reference numeral 103 denotes a radiator side cover, which is fastened to the radiator main body 31 together with the frame 49 by bolts 53, 53, .... The front edge of the radiator side cover 103 is inclined so as to spread outside the vehicle body. The outer side surface of the radiator side cover 103 smoothly follows the outer side surface of the fuel tank 67. The side cover 103 has a function of facilitating the knee grip and improving the appearance, and also has a function of collecting traveling air flowing outward and guiding it to the heat radiating portion.

Next, the baffle plates 55, 55, ... Will be described. The baffle plates 55, 55, ... Are vertically provided inside the frame body 49, with their rear edges being close to the heat radiating portion. That is, in FIGS. 5 and 6, 57, 57,
Is a rotary shaft, and is provided at the rear end portions of the upper and lower ends of the baffle plates 55, 55 ,. The shafts 57, 57, ... Support holes 59, 5 formed in the upper and lower sides of the frame 49.
Played by 9, ... Therefore, the baffle plates 55, 55, ... Rotate left and right inside the frame 49 about the shafts 57, 57 ,. In addition, reference numerals 61, 61, ... Retain washers to prevent the shafts 57, 57, ... from coming off from the upper side or the lower side of the frame 49.

Reference numerals 63, 63, ... Retain projections, which are provided at the upper and lower ends of the baffle plates 55, 55 ,. The protrusions are fitted appropriately into the locking holes 65, 65, ... Bored in the upper and lower sides of the frame 49.
Therefore, in the baffle plates 55, 55, ..., The individual baffle plates 55, 55 ,.

The baffle plates 55, 55, ...
When the mud adheres to the main body 31 of the radiator provided with the vehicle while traveling, the mud adheres to the surfaces of the baffle plates 55, 55, ...

By the way, the mud that adheres to the baffle plates 55, 55, ... Is a paste containing water, and most of the vibrations during running of the vehicle are vertical vibrations.
5, 55, ... are also vibrated vertically. Therefore, the mud adhered to the baffle plates 55, 55, ... Is likely to fall off due to the vibration during traveling.

By the way, since the rotary shafts 57, 57, ... Are provided at the rear end portions of the upper and lower ends of the baffle plates 55, 55 ,. 5
Even when 5, 5, rotate, the gap between the trailing edges of the baffle plates 55, 55, ... And the front surface of the heat radiating portion hardly changes, and the rear edge is always located close to the front surface of the heat radiating portion. . Therefore, the traveling wind that has entered the frame 49 is unlikely to flow in the left-right or up-down directions along the front surface of the heat dissipation portion, and therefore the traveling wind smoothly flows to the heat dissipation portion.

A cooling water pipe 33a is connected to the upper tank 33 of the radiator body 31, and a cooling water pipe 35a is connected to the lower tank 35. Cooling water pipe 3
3a is a radiator body 31, a recess 69, and a side cover 10.
It is guided downward through the space surrounded by 3 and the engine 2
1 water pump (not shown). Therefore, the cooling water pipe 33a does not interfere with the flow of traveling wind,
In addition, it can be arranged without obstructing the driver's knee grip.

As is clear from FIG. 3, the recess 69 is at the front of the fuel tank 67 in plan view and is open upward. Therefore, the upper tank 3 of the radiator body 31
The water supply cap 31a provided on the No. 3 is exposed upward from the recess 69. Therefore, the water supply cap 31a can be attached / detached by putting a hand into the recess 69 from above the fuel tank 67.

7 and 8 show the second embodiment of the present invention. This embodiment is different from the first embodiment in the fixing means of the baffle plates 55, 55, ....

That is, 91 is an interlocking rod in this embodiment. The interlocking rod 91 connects the baffle plates 55, 55, ... In parallel with each other via the support shafts 97, 97 to interlock the baffle plates 55, 55. That is, when the interlocking rod 91 is reciprocated in the elongated hole 95, the baffle plates 55, 55,
... rotate about the rotating shafts 57, 57, ... at the same ratio. Then, the bolt 93 is tightened at an appropriate position, and the interlocking rod 9
If 1 is fixed to the frame 49, all the baffle plates 55, 55, ... Are also fixed.

As described above, in the second embodiment, all the air guide plates 55, 55, ... Can be moved by a single operation, and the angles of the air guide plates 55, 55 ,. be able to.

[0024]

As described above, according to the present invention, a vertically elongated radiator main body is provided with a space in front of the fuel tank and displaced in the vehicle width direction, and the rear portion of the radiator side cover that covers the radiator main body is provided with fuel. The front of the side cover is slanted smoothly along the outer surface of the tank, and the front part of the tank is slanted so that it spreads outwardly smoothly in front of the radiator body. In addition, the traveling wind can be satisfactorily guided to the radiator. Especially, since the water supply pipe connected to the upper tank of the radiator body was passed from the rear of the radiator body to the space surrounded by the radiator, the fuel tank and the side cover, the water supply pipe did not hit the driver's foot and the knee grip was disturbed. It never becomes.

[Brief description of drawings]

FIG. 1 is a side view of a first embodiment of the present invention.

[Fig. 2] Partly enlarged view

[FIG. 3] Similarly, an enlarged plan view with a part omitted.

FIG. 4 is a partial front view of FIG.

FIG. 5 is an enlarged view of a part of FIG.

6 is a sectional view taken along line VI-VI in FIG.

FIG. 7 is an enlarged plan view of a part of the second embodiment.

8 is a sectional view taken along line VIII-VIII in FIG.

[Explanation of symbols]

 13 Steering Head Pipe 31 Radiator Main Body 31a Water Supply Cap 33 Upper Tank 33a Water Supply Pipe 34 Heat Dissipation Section 55 Baffle Plate 67 Fuel Tank 103 Radiator Side Cover

Claims (1)

[Claims] 1. A fuel tank arranged behind a steering head pipe, and a vertically long radiator arranged at a distance in front of the fuel tank and offset from the center line of the vehicle body in the width direction of the vehicle body. In a motorcycle including a main body and a radiator side cover that laterally covers the radiator main body, the radiator side cover has its rear portion smoothly along the outer surface of the fuel tank, and its front portion is located in front of the radiator main body. The cooling water pipe connected to the upper tank of the radiator main body is arranged in a space surrounded by the radiator main body, the fuel tank, and the radiator side cover so that the cooling water pipe is inclined so as to smoothly spread outward. Radiator device for motorcycles.