JPH031356Y2 - - Google Patents

Description

[Detailed explanation of the idea] (Industrial application field) The present invention relates to a front fender for a motorcycle.

(Prior art and its problems) Conventionally, for example, in a motorcycle equipped with a water-cooled engine, the radiator is placed behind the front wheel, but the flow of wind coming from the front is disturbed by the front forks, etc. , it is difficult to supply sufficient cooling air to the radiator. Particularly in motorcycles where anti-nose dive rods are placed on both sides of the front wheels to prevent sinking during braking, the wind flow is further disturbed, making it even more difficult to keep the radiator working properly. be.

(Means for Solving the Problem) In order to solve the above problem, the present invention covers both left and right sides and the upper side of the upper half of the front wheel of a motorcycle, and also has concave grooves that open outward on both left and right sides of the front fender. The lower half of the front fork is housed in the groove so that it does not protrude outward, and the rear half of the upper surface of the fender is formed in a backward-sloping shape along the tangential direction of the front wheel, so that the center of the radiator At the same time, both the left and right sides of the fender are shaped like a teardrop when viewed from above, to guide headwind toward the radiator at the rear.

(Example) In FIG. 1 showing the front side of a motorcycle to which the present invention is applied, a pair of left and right front forks 3 are attached to both left and right ends of a lower bracket 2 that is rotatably attached to a head pipe 1. A front wheel 4 is pivotally supported at the lower ends of both front forks 3. A radiator 6 for a water-cooled engine (not shown) is arranged on the frame 5 behind the front wheels. Reference numeral 7 denotes an anti-nose dive rod, which connects an arm 9 with a caliper attached to the front axle 8 and the lower bracket 2. A pair of rods 7 are arranged on both sides of the front wheels 4 to prevent the front part of the vehicle body from sinking during braking. 9a is a brake disc.

The front fender 10 covers both left and right sides and the upper side of the upper half of the front wheel 4, and also covers the lower half (outer tube part) 3a of both the left and right front forks 3.
It is provided with a pair of left and right concave grooves 11 for storing the.
The front fender 10 has a front half of its top surface 10a formed in an arc shape along the outer circumference of the front wheel 4, and a rear half of the top surface 10a extending along the tangential direction of the front wheel 4 to near the center of the radiator 6. It's been extended.

In FIG. 2, which shows the - cross section of FIG. It is housed in the groove 11. The rear part of the front fender 10 gradually contracts from a location corresponding to the lower half part 3a of the front fork so as to guide headwind toward the rear radiator 6, and is formed in the shape of a teardrop as a whole when viewed from above (in FIG. 2). . However, a portion of the surface of the front fork lower half portion 3a also constitutes a portion of the teardrop-shaped surface.

(Function) While driving, air pushed up above the front fender 10 as shown by the arrow in FIG. 1 flows smoothly along the upper surface 10a of the front fender 10 and is guided to the radiator 6, As shown by the arrows, the flow of the air that is pushed left and right is rectified by the front fender 10, and is smoothly guided to the radiator 6, thereby cooling the radiator 6 sufficiently.

(Effects of the invention) As explained above, according to the invention: (1) Sufficient air can be fed into the radiator 6, improving the cooling performance of the radiator.

That is, the front fender 10 covers both left and right sides and the upper side of the upper half of the front wheel 4, the lower half 3a of both the left and right front forks 3 is housed in the groove 11 of the front fender 10, and the rear end of the front fender 10 The front fender 10 is gradually tapered so that it can guide headwind toward the rear radiator 6, and is shaped like a teardrop as a whole when viewed from above. It is smoothly fed into the radiator 6 along the same line, and the radiator 6 can be cooled well. This improves the cooling performance of the radiator.

(2) Air resistance during driving is reduced, improving driving performance.

That is, the turbulence of the airflow caused by the front forks 3 and the like can be eliminated and the running wind can be rectified, reducing air resistance and improving running performance.

(3) Inspection and repair of the front fork 3 becomes easier while ensuring smooth air flow as described above.

That is, since the outward-opening concave groove 11 is formed in the side surface 10b of the fender 10, and the lower half portion 3a of the front fork 3 is housed in the groove 11 from the outside, the front fork 3 does not become an obstacle to the running wind. Furthermore, the front fork 3 can be inspected, repaired, or removed from the outside without removing the front fender 10, making maintenance easy.

[Brief explanation of the drawing]

FIG. 1 is a side view of the front portion of a motorcycle equipped with a front fender according to the present invention, and FIG. 2 is a cross-sectional view taken from FIG. 1. 3...Front fork, 3a...Lower half part,
4...Front wheel, 6...Radiator (engine cooling system), 10...Front fender, 11...Groove.

Claims (1)

[Scope of utility model registration request] It covers both left and right sides and the upper side of the upper half of the front wheel of a motorcycle, and is provided with outward-opening concave grooves on both left and right sides, and the lower half of the front fork is placed in the groove to prevent it from protruding outward. The rear half of the top of the fender is formed in a downward-sloping shape along the tangential direction of the front wheel, extending to the vicinity of the center of the radiator, and both left and right sides of the fender are formed into a teardrop shape when viewed from above. , a front fender for a motorcycle that is characterized by being designed to guide headwind to the rear radiator.