JP2717070B2 - Bicycle front wheel mudguard - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bicycle front wheel mudguard mounted outside the front wheel of a bicycle.

[0002]

2. Description of the Related Art At present, as a front mudguard for a bicycle which is disposed on the outer periphery of a front wheel of a bicycle and extends rearward from a front fork, there is a bicycle with a mounting portion for fixing to a front fork at a front end portion of the front mudguard. . In order to attach the front wheel mudguard to a bicycle, for example, a bolt provided at the lower portion of the fork stem of the front fork is inserted into a mounting hole formed in a mounting portion of the front wheel mudguard and fixed with a nut.

Conventionally, regardless of the size of the bicycle, all the front wheel mudguards have the same type, that is, the same shape and the same size, in order to reduce the manufacturing cost. It is manufactured in a uniform shape and size.

[0004]

However, there is no particular problem when the bicycle is mounted on a bicycle having such a large-diameter front wheel. However, when the bicycle is mounted on a small-diameter bicycle, the frame size of the bicycle is usually reduced. A smaller one is used in proportion to that, so the rear end of the front wheel mudguard comes close to the rotation trajectory of the bicycle pedal, and the problem is that the foot collides with the rear end of the mudguard while traveling. there were.

[0005] In order to prevent the foot from colliding with the rear end of the mudguard when attached to a small-sized bicycle, the present invention separates the rear end from the rotation locus of the pedal. With the goal.

[0006]

SUMMARY OF THE INVENTION The present invention relates to a bicycle front wheel.
4 and behind the front fork 2 of the bicycle
Mudguard body 3 extending to the
6 are provided in an upwardly projecting shape, and are attached to the mounting portion 6 and the front fork 2.
A bolt 11 to be inserted and a nut screwed into the bolt 11
And tighten the mounting portion 6 to the front fork 2
In a bicycle front wheel mudguard that is fixed,
The bolt 11 and the nut can be connected without using the mounting aid 15 described later.
The mounting part 6 is fastened and fixed to the front fork 2 by the socket 12 .
In this case, compared to the mounting position Y of the mudguard main body 3, the mudguard
Move the rear end of the body 3 away from the rotation locus P of the bicycle pedal.
The mounting portion 6 with respect to the front fork 2
The fixing aid 15 for changing the fixing angle of the mudguard
The body 3 and the mounting part 6 are provided separately, and the mounting aid
15 is a base 31 along the mounting portion 6 and an upper end of the base 31
And a locking portion 32 bent in a folded shape from
The upper end of the mounting portion 6 is fitted into the locking portion 32 of the mounting aid 15.
The mounting portion 6 is attached to the base 31 of the mounting aid 15.
The bolt 11 is inserted together with the front
The mounting aid 15 is a mounting part by the nut 11 and the nut 12.
6 together with the front fork 2 .

[0007]

The mudguard body has its front end fixed to the front fork via a mounting aid, so that the mounting angle with respect to the front fork is adjusted, and the rear end is separated from the rotation locus of the bicycle pedal. . Therefore, it is possible to prevent the foot from colliding with the rear end of the mudguard body during traveling.

[0008]

Embodiments of the present invention will be described below with reference to the drawings. The front wheel mudguard 1 according to the embodiment of the present invention shown in FIGS. 1 to 8 is mounted on a mountain bike type bicycle. The front wheel mudguard 1 includes an upwardly curved mudguard main body 3 that is arranged outside the front wheel 4 and extends rearward from the front fork 2 of the bicycle. This mudguard body 3
It is integrally molded of synthetic resin and its length is
A pair of ridges 5 are formed on both sides in the width direction of the front half of the circle. In addition,
In this embodiment, the front fork 2 is inclined downward and forward, and has a fork stem 9 fixed to a bicycle frame 30 and a shoulder bent from the lower end of the fork stem 9 right and left outward. And a pair of left and right fork legs 18 extending downward. The front wheel 4 is supported at the lower end of the fork foot 18.

An L-shaped bracket 14 is insert-molded at the center of the front end of the mudguard main body 3 in the width direction so that one piece thereof protrudes upward. A vertically long mounting hole 8 is formed in one piece of the L-shaped fitting 14, and thus one piece of the L-shaped fitting 14 is used as the mounting portion 6 of the mudguard main body 3. The mounting portion 6 is fixed to the front fork 2 via a mounting aid 15 by a fastener 13 including a bolt 11 and a nut 12 inserted into an insertion hole 10 formed in a lower portion of the fork stem 9. . Note that the bolt 11 may be welded in advance to the lower portion of the fork stem 9.

[0010] This mounting aid 15 is made of metal,
A base portion 31 abutting on the rear surface side of the mounting portion 6, a locking portion 32 bent forward from an upper end of the base portion 31,
It comprises a shake preventing portion 33 extending forward from the lower end of the base portion 31. The shake preventing portion 33 is inserted between the pair of left and right fork legs 18 in a fitted manner, and prevents the mudguard main body 3 from moving right and left.

The upper end of the mounting portion 6 is fitted into the locking portion 32. Therefore, as shown in FIG.
The rear end of the mudguard main body 3 is located below the position Y (indicated by a two-dot chain line in FIG. 1) where the mudguard main body 3 is mounted on the front fork 2 without using the mounting aid 15. Thus, the front fork 2 is fixed to be inclined with respect to the axis O of the front fork 2.

A projection 34 is provided on the front surface of the base 31 in contact with the vicinity of the lower end of the rear surface of the mounting portion 6, so that the base 31 in contact with the mounting portion 6 is attached to the mounting portion 6. And the rear surface of the base 31 is parallel to the axis O of the front fork 2. Therefore, the mudguard main body 3 is fixed to the front fork 2 via the mounting auxiliary tool 15, whereby the mounting angle of the mounting portion 6 with respect to the axis O of the front fork 2 is adjusted, and as shown in FIG. To
The bicycle is separated from the rotation locus P of the bicycle pedal 17 by a fixed distance l, so that the foot can be prevented from colliding with the rear end of the mudguard body 3 during running.

The bicycle in the above embodiment is equipped with a cantilever brake device 19 for braking the front wheel 4. The brake 19 includes a cable hanger 22 fixed to an upper part of the fork stem 9. The cable hanger 22 includes a ring-shaped cable hanger main body 20 and an outer receiving portion 21 formed on a part of an outer periphery of the cable hanger main body 20. The outer receiving portion 21 holds an outer 24 of the brake cable 23, and an inner wire 25 protrudes downward from an end of the outer 24. And
A hanging tool 26 is fixed to the tip of the inner wire 25, and an arch wire 28 is hung on a hook 27 of the hanging tool 26.

During off-road running on a mountain bike, the arch wire 28 may come off due to severe vibration and impact. In such a case, the arch wire and the front wheel 4 come into contact with each other or are caught, thereby hindering the running. It may be. In view of this, a drop-off preventing projection 7 projecting forward is integrally formed at the center of the front end portion in the width direction of the mudguard main body 3 of the above embodiment. As shown in FIGS. 1 and 3, the falling-off preventing projection 7 passes between the pair of left and right fork legs 18 and projects forward from the front fork 2, and is formed between the hanging member 26 and the cantilever brake 19. The protrusion is bent so as to be inclined forward and upward.

Therefore, even if the outer 24 of the brake cable 23 comes off from the outer receiving portion 21 or the arch wire 28 comes off from the hook 27 of the hanging member 26, the fall-off arch wire 28 does not fall out of the mudguard main body 3. Since it is supported from below by the prevention projection 7, the arch wire 28 is not caught by the tire of the front wheel 4, and the front wheel 4 is not locked and the bicycle does not fall.

A groove 16 extending in the left-right direction is formed at the base end of the falling-off preventing protrusion 7, so that the falling-off preventing protrusion 7 can be easily removed when unnecessary. In addition, as shown in FIG.
Above 0, a rear wheel mudguard 35 is mounted.

The rear wheel mudguard 35 is shown in FIGS.
As shown in FIG. 3, the rear wheel mudguard main body 37 is located outside the rear wheel 40 and extends rearward from the backhoek 36 of the bicycle. This rear wheel mudguard body 37
Is integrally formed of synthetic resin, and its length is
The left and right side walls 39 are formed in the front half of the rear wheel 40, and a bridge 49 is provided between the pair of left and right back forks 36 via a mounting bracket 48.
It is fixed to.

The mounting bracket 48 includes a bolt 43, a spring washer 44, a flat washer 45, and a bridge 4.
9 is fixed to the bridge 49 by rounded washers 46 and 47 for tightening from the front and rear. The mounting bracket 48 is provided with a bridge 49 for improving the mounting stability.
Is provided. The mounting bracket 48 and the mudguard main body 37 are fixed by screws or the like.

Also, at the rear end of the rear wheel mudguard body 37,
A spoiler portion 42 is formed to prevent the rear portion of the rear wheel mudguard main body 37 from rising up during traveling. The present invention is not limited to the above embodiment. For example, in the above-described embodiment, the projection 34 is provided near the lower end of the front surface of the base 31 of the auxiliary fixture 15. However, instead of this, the front and rear surfaces of the base 31 of the auxiliary fixture 15 are You may incline by changing board thickness.

[0020]

As described above, the bicycle front wheel mud guard according to the present invention does not use the mounting aid 15 to secure the bolt 1
Attachment part 6 to front fork 2 with 1 and nut 12
The mounting position Y of the mudguard body 3
Rotation locus P of the bicycle pedal the rear end portion of aside body 3
The front fork 2 so as to move away from it.
The mounting aid 15 for changing the fixing angle of the attachment 6 is
It is provided separately from the main body 3 and the mounting portion 6.
Then, the mudguard main body 3 is attached to the front fork 2
To the front fork 2 of the mudguard body 3
The mounting angle is adjusted, and the rear end is
Distance from the rotation trajectory of the
Front wheel mudguard installed on a small bicycle
Foot hits the rear end of the mudguard while running
Can be prevented. Moreover, in this case,
Mudguard body 3 used for large bicycles
Mounting part 6 and bolt 11 and nut 12
To a small bicycle, and
It is very economical to use only the additional tool 15
One is convenient.

The mounting aid 15 is attached to the mounting portion 6.
And a base 31 extending along the base 31.
A bent engaging portion 32, and
The upper end of the mounting part 6 is fitted into the stop part 32, and the mounting aid is
15 on the base 31 together with the mounting part 6 and the front fork 2
, The bolt 11 is inserted, and the bolt 11 and the nut
12 causes the mounting aid 15 to be attached to the front fork together with the mounting portion 6.
2 so that the locking part of the mounting aid 15
By fitting the upper end of the mounting portion 6 to the mounting
15 and the mounting portion 6 can be easily assembled.
It is necessary to prevent the aid 15 and the mounting portion 6 from rattling with each other.
And can be mounted with bolts 11 and nuts 12
Auxiliary tool 15 is fastened to front fork 2 together with mounting part 6.
Can be fixed, and the mounting aid 15 is
Despite being provided separately from the body 3 and the attachment part 6
The mounting aids 15
There is no danger of accidental dropping out of Hawk 2 and its practical use
The effect is significant.

[Brief description of the drawings]

FIG. 1 is a side sectional view showing a mounted state of a bicycle front wheel mudguard device.

FIG. 2 is an overall side view of the bicycle.

FIG. 3 is a perspective view showing an upper portion of a front wheel of the bicycle.

FIG. 4 is a side view of the mudguard main body.

FIG. 5 is a plan view of the mudguard main body.

FIG. 6 is a sectional view taken along line AA of FIG. 4;

7 (a) is a plan view, FIG. 7 (b) is a front view, and FIG. 7 (c) is a side view.

FIG. 8 is a side sectional view showing a main part of the present invention.

FIG. 9 shows the rear wheel mudguard main body, (a) is a bottom view,
(B) is a sectional view taken along line BB.

10A and 10B show a mounting bracket for the rear wheel mudguard main body, wherein FIG. 10A is a plan view, FIG. 10B is a side view, and FIG. 10C is a front view.

FIG. 11 is an exploded perspective view showing a mounting state of a mounting bracket of the rear wheel mudguard main body.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Bicycle front wheel mudguard 2 Front fork 3 Mudguard main body 4 Bicycle front wheel 6 Mounting part of mudguard main body 15 Mounting auxiliary tool P Bicycle pedal rotation locus

Claims (1)

(57) [Claims] 1. A bicycle which is arranged outside a front wheel (4) of a bicycle.
And a mudguard that extends backward from the front fork (2) of the bicycle
It has a body (3), and an attachment part (6) is attached to the mudguard body (3).
It is provided so as to protrude upward, and has a mounting portion (6) and a front fork
Bolt (11) inserted into (2) and said bolt (11)
And the nut (12) screwed into the mounting portion.
(6) is tightened and fixed to the front fork (2).
In the bicycle front wheel mudguard, the bolt (1) is used without using a mounting aid (15) described later.
1) Attachment part (6) front fork with nut (12)
Mounting of mudguard body (3) when tightened and fixed to (2)
The rear end of the mudguard main body (3) is rotated as compared with the position Y.
Move away from the car's pedal locus (P)
Fixed angle of the mounting part (6) with respect to the forehead hawk (2)
The mounting aid (15) for changing the
(3) and the mounting part (6) are provided separately, and the mounting aid (15) is a base along the mounting part (6).
(31) and bent back from the upper end of the base (31).
A bent engaging portion (32), and
The upper end of the mounting portion (6) is fitted into the locking portion (32) of (5).
Rarely, the base (31) of the mounting aid (15)
Bolt (11), together with part (6) and front fork (2)
Inserted into the bolt (11) and nut (12)
More mounting aids (15) and front fork with mounting part (6)
(2) For a bicycle, which is fixedly fastened to the bicycle
Front wheel mudguard.