Cooling arrangement for a vehicle

Field of the invention

The present invention relates to "Cooling arrangement for a vehicle" and more particularly to a radiator cooling arrangement for a scooter type motorcycle.

Description of the prior art

A radiator and a cooling fan are accommodated in the space surrounded by a front cover and the rear cover that are formed in the frontal portion of a scooter type motorcycle. The atmospheric air is introduced from an air inlet duct formed on the front side of the front cover. This atmospheric air-cools the radiator that is sucked by the cooling fan. After cooling the radiator, the residual air is discharged to the atmosphere through the air discharge opening formed on the rear cover. The cooling fan used in the above designs normally is installed using mounting brackets, which makes the system costly. Moreover the installation of the cooling fan also consumes up lot more space than required which increases the overall packaging. Hence, there needs a system that addresses the above said lacunae in the prior art. Hence the main objective of the present invention is to provide an air guiding structure incorporating a cooling fan mounting which is not only costs less, but also consumes less space.

Brief description of the present invention

An air guide structure for a scooter type motorcycle formed in the front body portion wherein a radiator and a cooling fan are accommodated within a front cover disposed above a front wheel of the vehicle and the radiator is cooled with air introduced from an air inlet formed in the front cover, characterized in that the said cooling fan is axial fan which is shroud mounted on the radiator located in between the said radiator and air outlet portion. The air discharge ports are formed in a rear cover which covers the said front cover from a rear side of a vehicle body, said air discharge ports being formed in air discharge surfaces of both side portions of said rear cover which discharge surfaces orient sideways backward.

Brief description of the drawings

Figure 1 illustrates a scooter type motorcycle according to the present
Invention

Figure 2 illustrates the radiator mounting according to the present invention

Detailed description of the invention

A selected illustrative embodiment of the present invention will be now
described with respect to the accompanying figures 1 and 2.

Any known step through motorcycle can be divided into three major portions,

the front portion, the middle portion and the rear/tail portion.

The front portion comprises of the head tube 101, the handle bar 102, the front suspension 103, the front wheel 104 with necessary brakes and the body panels 105; the middle portion comprises of the step through portion 106, the riders seat 107, the engine108, the brake pedals 109, the pillion and the rider foot rest 110, the utility box etc; and the rear/tail portion comprises of the rear fender 111, the pillion handle 112, shock absorbers 113 and the back wheel 114 with suspensions.

Typically, a frame structure (not shown in the drawing) for a step through motorcycle comprises a sub-frame and a main frame. The sub-frame is attached to the mainframe using appropriate fastening members. All the other components such as the body panels 105, the engine 108, and the electrical units are mounted on the main frame and the sub frame either directly or by means of brackets.

Furthermore, the main frame comprises a head tube 101, a main tube (not shown in the drawing) having one end attached to the head tube 101 and an engine 108 mounting arrangement attached to the other end of the main tube. One or more swing arms 115 are attached to the engine mounting arrangement with the help of a swing arm pivot tube. The frame structure further comprises one or more upper tubes attached to the main tube. One or more rear shock absorber mounting brackets are attached to the upper tubes. Rear shock absorbers 113 are attached to the rear shock absorber mounting brackets at one end and to the swing arms 115 at the other end. The rear shock absorber mounting brackets are added to provide additional support to the said rear shock absorbers 113.

In assembling such a vehicle, especially the body cover 105, there are many sub assemblies and these are independently mounted onto the frame at different locations. The body covers 105 are mounted to the frame using brackets.

According to first aspect of the present invention as demonstrated in figure 1 and 2, an air guide structure 301 for a scooter type motorcycle is formed in the front body portion wherein a radiator 302 and a cooling fan 303 are accommodated within a front cover disposed above a front wheel 104 of the vehicle. The radiator 302 is cooled with air introduced from an air inlet 304 formed in the front cover, characterized in that the said cooling fan 303 is axial fan which is shroud mounted on the radiator 302 located in between the said radiator 302 and air outlet portion 305. The air discharge ports 306 are formed in a rear cover 307 which covers the said front cover from a rear side of a vehicle body, said air discharge ports 306 being formed in air discharge surfaces of both side portions of said rear cover which discharge surfaces orient sideways backward.

Although the subject matter has been described in considerable detail with reference to certain preferred embodiments thereof, other embodiments are possible. As such, the spirit and scope of the appended claims should not be limited to the description of the preferred embodiment contained therein.

Claims

We claim:

1. An air guide structure for a scooter type motorcycle formed in the front body portion wherein a radiator and a cooling fan are accommodated within a front cover disposed above a front wheel of the vehicle and the radiator is cooled with air introduced from an air inlet formed in the front cover, characterized in that the said cooling fan is axial fan which is shroud mounted on the radiator located in between the said radiator and air outlet portion.

2. The air guide structure as claimed in claim 1, wherein the air discharge ports are formed in a rear cover which covers the said front cover from a rear side of a vehicle body, said air discharge ports being formed in air discharge surfaces of both side portions of said rear cover which discharge surfaces orient sideways backward.

3. The air guide structure as herein substantially described and illustrated with reference to the accompanying drawings.