JPS6117912Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a motorcycle, particularly a motocrosser type vehicle.

A front fender 1 extending rearward from above the front wheel 2 of this type of motorcycle is fixed to the bottom bridge 10 of the front fork 9 to provide a large space between the front fender 1 and the front wheel 2. The front fender 1 is generally made short so that the engine is well exposed to wind when the vehicle is running.

However, as mentioned above, if the front fender 1 is short and located at a high position, when driving in the rain, the front fender 1
As shown in the figure, the front fender 1 is no longer able to avoid the muddy water thrown up by the front wheels 2, and the muddy water that flies ahead of the front end of the fender 1 is moved by the wind pressure as shown by the arrow
It flies towards Hedlight 11 mag like this. Further, in the lower part, as shown by arrow B, muddy water splashes directly onto the engine, making the car body extremely dirty.

As a countermeasure against the mud splash mentioned above, it is possible to increase the length of the front fender, but on sunny days, especially when driving at high speed, the long front fender blocks the wind from hitting the engine. Engine cooling performance deteriorates.

Also, when driving at high speeds on sunny days, a long front fender increases wind resistance, so it is better to have a short front fender. On the other hand, when it's raining, the vehicle travels at a slower speed than when it's sunny, so even if the front fender is long, it doesn't receive as much wind resistance.

In view of the above points, the purpose of the present invention is to provide a motorcycle that can sufficiently cool the engine when driving on sunny days as before, and reduce mud splashing when driving on rainy days. In a motorcycle in which a front fender 1 extending rearward from above is fixed to a bottom bridge 10 of a front fork 9, the front fender has the following configuration.

That is, as shown in FIG. 2, a front auxiliary fender 3 and a rear auxiliary fender 4, which are slidable back and forth along the fender main body 1, are provided at the front and rear ends of the front fender main body 1, respectively. It is attached to the upper surface of the main body 1 so as to overlap it.

Fixing devices 5, 6 and 7 are provided between each of the auxiliary fenders 3 and 4 and the fender main body 1 to fix each of the auxiliary fenders 3 and 4 in the storage position and the extended position, respectively.

The above-mentioned fixing device consists of a bolt and a nut, and the nuts 5 and 6 are fixed at two places on the front and back sides of the front and rear ends of the fender main body 1, respectively, at a distance corresponding to the movable distance between the auxiliary fenders 3 and 4, and 3 and 4, bolt 7 for the nuts 5 and 6 above.
Each one is equipped with one to prevent it from coming out.

The front fender main body 1 is provided with holding fittings 8 in the vicinity of its front and rear ends for guiding the auxiliary fenders 3 and 4 in sliding motion and for preventing them from floating up.

Since the motorcycle of the present invention has the front fender configured as described above, when driving on sunny days, the front and rear auxiliary fenders 3 and 4 are retracted and the bolt 7 is screwed into the fixing nut 6 as shown in Fig. 2. The front fender is short, which reduces the wind resistance while driving, and the engine is well-ventilated, cooling the engine sufficiently. Therefore, it can run at high speed.

When driving in the rain, as shown in Figure 3, the front auxiliary fender 3 is pushed forward and the rear auxiliary fender 4 is extended backward and downward, and the bolts 7 are screwed into the fixing nuts 5 near the ends to fix them. The length of the front fender is extended forward and backward.

Therefore, the front fender 14 can avoid most of the muddy water that flies toward the headlights 11 and the like from the front and the muddy water that splashes directly onto the engine, so it is less dirty.

Conventionally, a configuration has been known in which the protruding length of the rear end of a rear fender of a motorcycle is extended or contracted by sliding an auxiliary fender along the arc shape of the main body of the rear fender.
A pair of front and rear bolts are superimposed on the underside of the rear fender main body and planted on the base side of the auxiliary fender, passing through the rear fender main body and peeking out from the top surface, and are secured by tightening wing nuts on these bolts.

Therefore, when extending or retracting the auxiliary fender, two wing nuts must be turned at the same time, which is troublesome. Also, if the wing nut is loosened too much, the auxiliary fender may fall off.

The auxiliary fender is installed using a set of front and rear bolts and wing nuts, but since it is only fixed at the base side, in other words, it is in a cantilevered state, the auxiliary fender was retracted along the underside of the main body of the rear fender. At this time, the rear end of the auxiliary fender, which tends to fall under its own weight, swings up and down due to the vibrations of the vehicle body and wind pressure while the vehicle is running, striking the main body of the rear fender and making noise.

In the present invention, a front auxiliary fender 3 and a rear auxiliary fender 4 are superimposed on the upper surfaces of the front end and rear end of the front fender main body 1, and the front auxiliary fender 3 is located near the front end of the front fender main body 1. The rear auxiliary fender 4 has a holding part 8 provided near the rear end of the front fender main body 1 and a bolt 7 provided on the base side of the auxiliary fender 3. Bolt 7 provided on the base side of
Each is installed by

That is, each of the front and rear auxiliary fenders 3 and 4 can be adjusted to expand and contract by tightening and loosening a single bolt 7, and each of the auxiliary fenders 3 and 4 overlaps the top surface of the front fender main body 1. In addition, the auxiliary fenders 3 and 4 can be easily slid.

Furthermore, as mentioned above, since the auxiliary fenders 3 and 4 overlap the top surface of the front fender main body 1, the auxiliary fenders 3 and 4 are not only retracted, but also extended. 3.
The base side of the fender 4 is supported from below by the end of the front fender main body 1, and the vibration of the auxiliary fenders 3 and 4 is suppressed together with the attachment by the holding part 8 and bolts 7.

[Brief explanation of the drawing]

Figure 1 is a side view of the front part of a conventional motorcycle, Figure 2 is a side view of the main parts of the motorcycle of the present invention, and Figure 3 is a side view of the front part of a conventional motorcycle.
The figure is a side view of the front fender with its length extended, and FIG. 4 is an enlarged cross-sectional view taken along the line of FIG. 1 is the front fender main body, 2 is the front wheel, 3 is the front auxiliary fender, 4 is the rear auxiliary fender, 5 and 6
is a female threaded hole (fixing nut), 7 is a bolt, 8 is a holding part, 9 is a front fork, and 10 is a bottom bridge.

Claims (1)

[Scope of utility model registration request] In a motorcycle in which a front fender extending rearward from above the front wheel is fixed to the bottom bridge of the front fork, there is a device attached to the front and rear ends of the main body of the front fender that can slide back and forth along the main body of the front fender. A front auxiliary fender and a rear auxiliary fender are provided to overlap the upper surface of the main body of the front fender, and a sliding guide and lifting prevention device for each of the front and rear auxiliary fenders is provided near the front end and rear end of the main body of the front fender. At the front and rear ends of the main body of the front fender, two female threaded holes are provided to separate the movement of the auxiliary fender, and on the base side of each of the front and rear auxiliary fenders, there are female threaded holes. A motorcycle that is equipped with one bolt that screws into each hole to prevent it from coming out.