Rear Fender for a Motorcycle

Field of invention:

The present invention relates to "Rear fender for a motorcycle" and more specifically to the motorcycle rear fender structure secured to a motorcycle frame structure above the rear wheel.

Background of the invention:

In motorcycles, a rear frame substructure forming a rear portion of the motorcycle frame structure is generally provided with a rear wheel fender positioned above the rear drive wheel. The rear fender is usually rigidly mounted so that it does not move with respect to the motorcycle frame.

The rear wheel fender is so shaped and so designed either semicircular or L shape as to prevent water and/or mud, splashed from the motorcycle rear wheel, from entering an interior space inside the rear wheel fender. The said rear wheel fender is made of metal or plastic. The fender made of sheet metal is being manufactured by pressing or rolling. The plastic fender is being manufactured by means of injection molding.

However, sheet metal fender manufacturing is a time consuming method and does not have any flexibility in design. Special shapes can't be made to suit the specific requirements. This does indeed lead to reduction of the productivity and increase of the manufacturing cost.

Hence the present invention tries to overcome the above mentioned problems.
Summary of invention:

In view of the foregoing, the present invention has for its primary object to provide an improved rear wheel fender structure for motorcycles, where the rear wheel fender is so designed and so structured as to permit component parts to be fitted on old vehicles of same category without much effect and as to block the splashing of water and/or mud.
In order to accomplish the object of the present invention referred to above, the rear wheel fender structure of the present invention is positioned above the motorcycle rear wheel and contains semicircular design.

According to the present invention, the motorcycle wheel rear fender structure is of a semicircular having arc angle more than 180 degrees. Fender is provided with projection above the top surface such that to cover the frame partially and bridge the gap between rear fender and rear frame.

In another preferred embodiment of the present invention, the rear portion of the said rear fender is provided with a pair of engagement holes, in which turn signal lamps are fixed.

In another preferred embodiment of the present invention, a flap is integrated with a rear lower portion of the rear fender so as to extend rearwardly downwardly therefrom, and thereby avoiding splashing of water and/mud from entering an interior space.

The rear fender is a molded product formed by the use of a plastic molding technique and includes a beading generally elongated along with the left and right side bottom edges of the fender. The said beading is formed integrally with upward oriented side walls of left and right side edges. Thus provides stiffness to the rear fender and also gives aesthetics like metallic fender.

Brief description of the drawings:
In any event, the present invention will become more clearly understood from the following description of preferred embodiments thereof, when taken in conjunction with the accompanying drawings.

Figure 1 is a side view of the motorcycle. Figure2 is a top view of rear fender. Figure 3 is a side view of rear fender. Figure 4 is a bottom view of rear fender. Figure 5 is a view looking from rear side. Figure 6 is a view looking from front side.

Detailed Description of the Drawings:

A preferred embodiment of the present invention will be described in detail with
reference to the accompanying drawings.

Figure 1 schematically illustrates a side view of a motorcycle equipped with a rear wheel fender structure according to one of the embodiment of the present invention.

Figure 2 illustrates a top view showing the rear fender structure shown in Figure 1. The rear frame (21) is made of a plastic material and is formed in a semi¬circular shape, when viewed from side. This rear fender is formed in a semicircular shape having arc angle more than 180 degrees. Referring to figure 3 the said rear fender is provided with projection (31) above the top surface such that to cover the frame partially and bridge the gap between rear fender and rear frame. This rear fender is formed at its front end with a plurality of mounting points M1 & M2 through which the rear fender is rigidly connected with the main frame by means of corresponding screw members so as to extend rearwardly from the main frame. This rear frame is also formed with a plurality of mounting points M3, M4, M5 & M6 at its center and also at its rear end through which the rear fender is rigidly connected with the rear frame by means of corresponding screw members.

Figure 3 illustrates a side view showing the rear fender structure. The rear fender is a molded product formed by the use of a plastic molding technique and includes a beading generally elongated along with the left and right side bottom edges of the fender. The said beading is formed integrally with upward oriented side walls of left and right side edges. Thus provides stiffness to the rear fender and also gives aesthetics like metallic fender. The projection (31) starts from the midway portion of top surface of the said rear frame extending to the front side of the said rear fender. The height of the projection walls on the midway portion gradually decreases while it keeps extending to the front end of the said rear fender. The said projection walls on the midway portion covers a part of the frame from its side thereby bridging the gap between the rear fender and rear frame.

Figure 4 illustrates a bottom view showing the rear fender; Figure 5 and Figure 6 illustrate views showing the rear side and front side of the rear fender respectively. The rear portion of the said rear fender is provided with a pair of engagement holes T1 & T2 (shown in figure 3) to give provision to fit turn signal lamps.

In another preferred embodiment of the present invention, a flap ( shown in figure 3) is integrated with a rear lower portion of the rear fender so as to extend rearwardly downwardly in order to avoid splashing of water and/mud from entering an interior space and to the pillion rider seating behind the rider.
Various modifications and adaptations may occur to those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.

We claim:

1. A plastic rear fender for motorcycle positioned above a rear wheel
comprises:
a rear fender having an arc angle more than 180 degrees;
a curved projection over the top surface of the rear fender;
a beading formed integrally with upward oriented side walls of left and
right edges of the rear fender;
first means for attaching turn signal lamps on rear portion of said rear
fender; and
second means for attaching the said rear fender to the frame of the
motorcycle.

2. The rear fender for motorcycle as claimed in claim l, wherein the said curved projection is provided to bridge the gap between the rear fender and rear frame.

3. The rear fender for motorcycle as claimed in claim l, wherein the said first means are preferably engagement holes.

4. The rear fender for motorcycle as claimed in claim l, wherein the said second means are preferably screw mounting points.