JPS6117913Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an improvement of a fender attachment device to be attached to a front fork of a two-wheeled vehicle.

As shown in FIG. 1, a conventional front fork for a two-wheeled vehicle has an inner tube 2 and an outer tube 3 fitted together so that they can extend and contract freely.The left and right forks 1a and 1b are heated above the inner tube 2. It is firmly connected by the par bracket 4 and the under bracket 5, and
The upper bracket 4 and the under bracket 5 are connected to a head pipe 6 on the vehicle body side via a shaft (not shown). Furthermore, the lower end of the outer tube 3 is connected to the axle 7 side that supports the wheels 8.

The fender 9 is arranged on the upper part of the wheel 8 in order to prevent mud splashing from the wheel 8 side. It is attached via bolts 11.

In the conventional front fork constructed in this way, a highly rigid material is used for the fender 9,
Moreover, when the bolts 11 are tightened from the side to the mounting part 10, the left and right forks 1a, 1b are distorted inward due to the tensile force due to the rigidity of the fender 9. Regulated left and right fork 1
The parallel spacing L between a and 1b collapses, resulting in increased sliding resistance during the expansion and contraction movement of the inner tube 2 and outer tube 3, resulting in a problem that smooth operation cannot be achieved.

Therefore, the fender 9 is made of synthetic resin or a thin iron plate with low rigidity so as not to disturb the parallel distance L between the left and right forks 1a, 1b during installation. However, in actual use of the front fork, when the steering wheel is operated or when the wheel 8 is subjected to upward force from the road surface, the left and right forks 1a and 1b are twisted, resulting in poor maneuverability.

Therefore, the purpose of the present invention is to solve the above-mentioned drawbacks by making it possible to fix the inner tube to the outer tube without disturbing the parallel spacing between the left and right forks even if a highly rigid fender is used. A two-wheeled vehicle that maintains smooth expansion and contraction, increases the torsional rigidity of the left and right forks, improves handling stability, and also makes it extremely easy to attach the fender to the fork. An object of the present invention is to provide a fender mounting device for a front fork.

A specific example of the present invention will be described below with reference to FIG.

In this case, the structure is exactly the same as that shown in FIG. 1 except for the fender mounting part.

A fender attachment portion 12 is integrally formed in the front side portion of the outer tube 3 in the vertical direction. A highly rigid fender 9 is fixed to this mounting portion 12 from the vertical direction with bolts 14 via a flange portion 13 formed integrally and horizontally therewith.

When installing the fender 9, the mounting hole 15 of the flange portion 13 on the side of the fender 9 is a long hole or a hollow hole that is larger than the diameter of the bolt 14, so that even if the left and right spacing is different due to manufacturing errors, the bolt 14 can be fixed. Installation is now acceptable. Therefore, even if a highly rigid fender 9 is used, the fender 9 will escape laterally due to the long or blank hole, and the left and right forks 1a, 1
Since no lateral load is applied to b by the fender 9, the fender 9 can be attached without destroying the parallel distance c between the left and right forks 1a and 1b, and the rigidity against torsion of the left and right forks 1a and 1b can be increased. be.

In the above explanation, the case where the rigidity of the fender 9 itself is increased is explained, but the left and right fork 1a, 1
The same effect can be obtained by disposing a strength member having a mounting hole formed into a long hole or a hollow hole between the mounting portions 12 of b, and disposing a fender with low rigidity like the conventional device on this strength member. It is self-evident that it plays.

Furthermore, the mounting part 1 arranged on the outer tube 3
2 was placed in front of the outer tube 3, but
It may be located at the rear or both front and rear of the outer tube 3, and in short, when installing the fender 9, the fender 9 should be located at a position that can be adjusted in the left and right direction within the allowable range of the mounting hole 15. Bye.

As described above, the present invention improves steering stability by increasing the torsional rigidity of the left and right forks without impairing the telescopic operation of the left and right forks, and also by placing the fender flange on the fork mounting part. Since the fender can be installed by simply tightening bolts from one direction (above), the fender installation work is simple, and the process between the fender and the mounting portion is extremely easy.

In addition, in the present invention, when the fender mounting bolt is loosened, the outer tube can be rotated by the amount of play between the bolt and the bolt formed in the elongated hole.

Therefore, even if the caliper is mounted inside the wheel width, the wheel can be easily replaced by loosening the bolts and rotating the outer tube to move the caliper out of the wheel width as described above. You can get different effects.

[Brief explanation of the drawing]

FIG. 1 is a side view of a conventional fender mounting device, and FIG. 2 is a side view of a fender mounting device according to an embodiment of the present invention. 1a, 1b...Right and left forks, 9...Fender, 12...Mounting part, 13...Flange part, 14
...Bolt, 15...Mounting hole.

Claims (1)

[Scope of claim for utility model registration] (1) Fender mounting parts protruding from the left and right forks,
Further, the fender is provided with a horizontal flange part formed integrally with the above-mentioned mounting part in order to correspond to the mounting part,
A mounting hole consisting of a long hole or a round hole is bored in the flange part, and the fender is arranged so as to be adjustable left and right within the permissible range of the fender mounting hole, and the fender is arranged to be adjustable from side to side with respect to the fender mounting part of the fork. A fender mounting device for a front fork for two-wheeled vehicles, which tightens the flange from the top. (2) A fender mounting device for a front fork for a two-wheeled vehicle according to claim 1, wherein the fender is molded from a highly rigid material. (3) A fender mounting device for a front fork for a motorcycle according to claim 1 of the utility model registration claim, wherein a strength member having a mounting hole is disposed between the mounting portions, and a fender with low rigidity is disposed on the strength member. .