Radiator structure for motorcycle

Details Radiator structure for motorcycle Radiator structure for motorcycle

2000-06-16

2001-12-25

Hurley, Kevin (Department: 3619)

Motor vehicles

Special wheel base

Having only two wheels

C180S068400

Reexamination Certificate

active

06332505

ABSTRACT:

BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to an improvement to a radiator structure for a motorcycle.
2. Description of Related Art
A motorcycle radiator is shown, for example, in Japanese Patent No. 2773242 entitled “Motorcycle Radiator.” This motorcycle radiator, as shown in
FIG. 1
of that publication, includes two radiator units
4
and
5
attached together in parallel with each other. The radiator is attached by being interposed between a tank rail
2
(refer to
FIG. 2
) and a down tube
3
.
Each radiator unit
4
,
5
is comprised of an upper tank
4
a
,
5
a
, a radiator section and a lower tank
4
b
,
5
b
. Furthermore, a reservoir tank
15
is arranged above the upper tank
4
a
of the radiator unit
4
.
The above described radiator units
4
,
5
are attached so as to be interposed between a tank rail
2
and a down tube
3
, and are suitable for this type of frame shape. However, if the frame shape is altered in order to reduce weight or improve rigidity, it will sometimes not be possible for the radiator units
4
and
5
to be used as is. For example, if the shape of the radiator unit
4
is altered and the radiator units
4
and
5
are attached as is, the reservoir tank
14
and the radiator unit
5
interface with the frame or other components after alteration.
Manufacturing a new radiator in order to avoid interference with the frame and other components after alteration increases manufacturing cost.
SUMMARY OF THE INVENTION
It is therefore an object of the present invention to provide a motorcycle radiator structure intended to reduce the number of parts that will be newly manufactured and to reduce manufacturing cost.
In order to achieve the above described object, the present invention is directed to a radiator structure for a motorcycle, having radiators arranged at side sections of the motorcycle by providing a pair of left and right main frames extending rearwards from a head pipe. Vertical radiators include an upper tank, a core and a lower tank below a front part of the main frames, in which it is made possible for the radiator structure to be close to the main frames by providing upper indented sections in upper corners of the upper tank toward the center of the vehicle. Furthermore, it is made possible for the radiator structure to be close to an exhaust pipe by providing lower indented sections in outer lower corners of the lower tank.
Upper indented sections are provided in upper corners of the upper tanks of the radiator toward the center of the vehicle. The upper indented sections avoid the main frame, and interference between the main frame and the radiator is therefore prevented.
Lower indented sections are provided in the outer corners of the lower tanks of the radiator. The lower indented sections avoid an exhaust pipe, and interference between the mainframe and the exhaust pipe is therefore avoided.
As a result, there is no interference with the main frame or the exhaust pipe, even if an already existing core having a specified surface area is used.
The present invention includes the upper tank and the lower tank as press molded parts. The upper tank and the lower tank are the same molded part and can therefore be made with a single mold.
It will be possible to use a common tank by making the interference preventing shape of the upper tank and the interference preventing shape of the lower tank the same. Since a molded part made using a single mold is used as the upper tank and the lower tank, there is no need to prepare a plurality of molds.
Further scope of applicability of the present invention will become apparent from the detailed description given hereinafter. However, it should be understood that the detailed description and specific examples, while indicating preferred embodiments of the invention, are given by way of illustration only, since various changes and modifications within the spirit and scope of the invention will become apparent to those skilled in the art from this detailed description.


REFERENCES:
patent: 4478306 (1984-10-01), Tagami
patent: 4537273 (1985-08-01), Funabashi
patent: 5176111 (1993-01-01), Nakamura et al.
patent: 5715778 (1998-02-01), Hasumi et al.
patent: B2-2773242 (1998-04-01), None

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