JPH01204875A - Mudguard for bicycle - Google Patents

Abstract

PURPOSE:To keep off any mud splashing on a brake mechanism with certainty by constituting a mudguard with a cover covering the brake mechanism alone over almost the whole body and a mounting member for attaching this cover to a bicycle frame in and around the brake mechanism. CONSTITUTION:A rear-wheel brake mechanism B of a mountain like is constituted of a pair of levers 9a, 9b rotatably supported on each lower part of symmetrical chain stays 6a, 6b in the horizontal direction via a base, an almost triangular connecting member 11 connecting these levers 9a, 9b via a connecting line 10 and a brake wire 12 connected to a front end of this connecting member 11. In this case, a mudguard is installed in a reinforced pipe 7 connecting an interval between both these chain stays 6a, 6b in front of a rear wheel. This mudguard consists of a plastic cover 16 in a form covering the brake mechanism B alone over almost the whole body from the upside, and a clamp 17 for setting this cover 16 to the reinforced pipe 7.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a mudguard for preventing mud from getting on the brake mechanism of a bicycle.

[Prior art and problems to be solved by the invention] Among bicycles that have been commercially available, for example, bicycles called mountain pike, which are used for riding on extremely uneven roads such as mountains and fields, are usually equipped with mudguards. It has not been done. Therefore, with this bicycle, there is a problem in that mud scattered by the wheels while the bicycle is running is applied to the brake mechanisms of the front and rear wheels, making it difficult for the brakes to operate properly.

Therefore, mudguards such as those used on ordinary bicycles,
That is, it is conceivable to attach an arc-shaped mudguard to the mountain bike, which is attached along the outer periphery of each of the front and rear wheels so as to be spaced apart from the wheels, and which catches the scattered mud. However, this mudguard does not cover the brake mechanism, so in order to ensure that the brake mechanism does not get muddy, the mudguard should be made quite long along the outer periphery of the front and rear wheels. There is a need. However, if it is made longer, the mudguard becomes larger and the overall weight of the bicycle increases.

SUMMARY OF THE INVENTION An object of the present invention is to provide a bicycle mudguard that is small and lightweight, and that can reliably prevent mud from getting on the brake mechanism.

[Means for Solving the Problems] Therefore, in order to achieve the above object, the present invention provides a cover that covers almost the entire brake mechanism of a bicycle, and a cover that covers almost the entire brake mechanism of a bicycle so that mud does not get on the brake mechanism of the bicycle. The gist of this invention is a mudguard for a bicycle, which comprises a mounting member to be mounted to a part of the bicycle frame near the brake mechanism.

[Operation] When the cover is attached to a part of the frame of the bicycle near the brake mechanism using the attachment member, the brake mechanism is almost entirely covered by the cover.

Therefore, it is possible to reliably prevent mud from getting on the brake mechanism section. Further, since the cover is formed to a size that covers only the brake mechanism portion, it is smaller than the conventional long arc-shaped mudguard.

[Example] Hereinafter, an example in which the present invention is embodied in a mudguard attached to a mountain pike will be described with reference to FIGS. 1 to 5.

First, to explain the part to which the mudguard of this embodiment is attached, as shown in Fig. 1.2, the shaft support tube l has a shaft 2.
is rotatably supported, and a pedal crank (only one shown) 3 is fixed to both ends of the shaft 2. A lower pipe 5 is installed diagonally in front of the shaft support tube 1 (to the left in Fig. 1.2) and upwardly.
However, vertical pipes 4 extend diagonally rearward and upward. Furthermore, a pair of chainstays 6a and 6b extend rearward from the coaxial support tube l so as to be located on the outer side of the rear wheel W and are spaced apart from each other. These chainstays 6a, 6b
are formed so that the distance between them becomes wider at the rear. A reinforcing pipe 7 is fixed in front of the rear wheel W between both chainstays 0a and 6b. The lower pipe 5, the vertical pipe 4, the chainstays 5a and 6b, and the reinforcing pipe 7 constitute a part of the bicycle frame.

As shown in FIG. 1.5, each chainstay 6a.

A pedestal 8 protrudes from the lower part of 6b, and levers 9a and 9b are supported on each pedestal 8 so as to be rotatable in the horizontal direction.

Each of the levers 9a, 9b has its front half curved inwardly and intersects with each other. And each lever 9
a and 9b are connected via a connecting line 10 to a connecting member 11 having a substantially triangular plate shape. Further, the connecting member 11
A proximal end of a brake wire 12 is connected to the front end of the shaft, and the brake wire 12 passes through the protrusion 13 on the lower side of the shaft support tube l and extends diagonally forward and upward along the lower pipe 5, and connects to a brake lever (not shown). It is connected.

In addition, a brake piece 1 is provided at the rear end of both the levers 9a and 9b.
4 are attached, and by narrowing the distance between them, the rim 15 at the rear end W as shown in FIG. 2 is sandwiched from the outside. The pair of levers 9a, 9b, the connecting line lO1 connecting member 11, and the base end of the brake wire 12 constitute a brake mechanism section B.

Therefore, operate the brake lever and brake wire 12
When pulled in the direction of arrow A, the connecting member 11 and the connecting line l
The front ends of the pair of levers 9a and 9b are pulled forward via O. Then, both levers 9a and 9b rotate in a direction toward each other around the base 8, and the brake is applied to the rear wheel W.

A mudguard can be attached to the reinforcing pipe 7.

As shown in Fig. 1.4, this mudguard consists of a thin plate-shaped cover 16 made of synthetic resin, and a reinforcing pipe 7
It is comprised of a mounting bracket 17 as a mounting member for mounting on.

As shown in FIG. 1.5, the cover 16 is formed in a shape that covers only the brake mechanism section B almost entirely from above, that is, it extends in the front-rear direction and has a large rear throat width. There is. Further, the cover 16 is formed such that its front end is close to the rear half of the vertical pipe 4, and its rear end is close to the front of the rear wheel W. moreover,
As shown in FIG. 3, when the mudguard is attached to the reinforcing pipe 7, both edges of the cover 16 in the width direction (left and right direction) are located on the chainstays 6a and 6b.

As shown in FIG. 3.4, the cover 16 is curved so that both sides descend gently, making it easier for mud adhering to the top surface of the cover 16 to flow down. Further, a recess 18 is formed at the front end of the cover 16, and this recess 18 prevents a gear ratio switching wire (not shown) vertically arranged along the rear side of the vertical pipe 4 from hitting the cover 16. That's what I do.

As shown in FIG. 1.3, on the bottom surface of the cover 143,
A pair of supporting protrusions 20 extending in parallel with each other in the front-rear direction are integrally formed, and a locking groove 20a is formed on the inner side of the supporting protrusions 20.
is formed.

The mounting bracket 17 includes a base 21 having a square plate shape, a pair of clamping parts 22 whose front and rear ends are curved downward to correspond to the reinforcing pipe 7, and a pair of clamping parts 22 whose left and right sides of the base 21 are bent outward. The supporting portion 23 is bent into a supporting portion 23. These support parts 23 are inserted into the locking groove 20a,
And it is possible to adjust the position.

Note that both the holding parts 22 are bent so that their lower ends are spaced apart from each other, making it easy to attach the mounting fitting 17 to the reinforcing pipe 7. Also, one of the clamping parts 22 has a through hole 2.
5 is formed, and when there is a protrusion or the like on the reinforcing pipe 7, the through hole 25 allows the protrusion or the like to protrude onto the holding portion 22.

Next, the operation and effect of this embodiment configured as described above will be explained.

To attach the mudguard of this embodiment to a bicycle, as shown in FIG. Then, the mounting bracket 17 is fixed to the cover 16. And mounting bracket 1
A pair of clamping parts 22 of 7 are fitted onto the reinforcing pipe 7 from above. Then, the holding portions 22 sandwich the reinforcing pipe 7 from the front and rear, so that the mudguard is fixed to the bicycle so as not to be movable in the vertical direction. In addition, when removing the mudguard from the bicycle, it is sufficient to perform the reverse operation as described above, that is, simply pull out the entire mudguard upward. In this way, the mudguard of this embodiment can be attached to and detached from the bicycle with a simple operation without using screws or tools.

By the way, when the mudguard is attached to the bicycle as described above, the left and right edges of the cover 16 touch the chainstays 6a and 6.
b, the front edge is connected to the vertical pipe 4, and the rear edge is connected to the rear wheel W.
are close to each other. The cover 16 includes a brake mechanism section B disposed at the bottom of the chainstays 6a and 6b,
That is, the connecting portion 26 between the connecting line 10 and the connecting member 11,
and a connecting portion 27 between the connecting member 11 and the brake wire 12
from above at a position near the area. Further, at this time, the cover 16 also covers the intersection of the levers 9a and 9b. Therefore, even if mud scatters onto the brake mechanism section B from above while the bicycle is running, this mud will be blocked by the upper surface of the cover 16 and will not adhere to the brake mechanism section B. Therefore, unlike a conventional mountain pike that does not have a mudguard, it is possible to maintain good brake operation at all times. In addition, since the cover 16 is curved so that the left and right sides are downwardly curved, the cover 16
6. The mud adhering to the surface does not remain as it is and easily flows down.

Furthermore, in this embodiment, the cover 16 is formed to a size that covers only the brake mechanism section B, and is smaller than the long arc-shaped mudguard conventionally used on general bicycles. . Therefore, the weight increase of the entire mountain pike is smaller than when such a mudguard is attached to the mountain pike.

It should be noted that the present invention is not limited to the configuration of the above-mentioned embodiments, and may be modified and embodied as desired without departing from the spirit of the invention, for example, as described below.

(1) The mudguard of the present invention can be attached not only to the mountain pike but also to various types of bicycles that are not equipped with mudguards. Moreover, it can also be attached to a type of bicycle in which a brake mechanism is provided above the rear wheel W at a position behind the saddle. Furthermore, the mudguard of the present invention can be attached to cover the brake mechanism of the front wheel.

(2) The mudguard of the present invention can be attached to a bicycle equipped with a brake mechanism B of the type shown in FIGS. 6-8. The brake mechanism section B in FIG. 6 operates by pulling the brake wire 12 in the direction of arrow A.
The front end (left end in the figure) of b is pushed out by the expanding member 24, and the brake mechanism part B in FIG. 7 has a lever 9a,
The front end portions of 9b do not intersect with each other, and these are rotatably supported at the rear end. Further, in the brake mechanism section B of FIG. 8, the levers 9a and 9b intersect at two points and are rotatably supported at the rear end. By arranging the cover 16 in each brake mechanism section B at the position indicated by the two-dot chain line, the same operation and effect as in the embodiment described above can be achieved.

(3) In the embodiment described above, the cover 16 is made of synthetic resin, but it may also be made of metal.

(4) If the reinforcing pipe 7 is thin, it is preferable to wrap a rubber gasket around it and then fit the mounting bracket 17 on the outside.This will prevent the mounting bracket 17 from wobbling.

[Effects of the Invention] As detailed above, the mudguard of the present invention is small and lightweight, and has the excellent effect of reliably preventing mud from getting on the brake mechanism.

[Brief explanation of the drawing]

1 to 5 show an embodiment embodying the present invention.
The figure is an exploded perspective view from below with the mudguard attached to the reinforcing pipe, Figure 2 is an exploded perspective view from above, Figure 3 is a sectional view, Figure 4 is a side view, and Figure 5. is a bottom view showing the brake mechanism section, and FIGS. 6 to 8 are bottom views showing other examples of the brake mechanism section. 16...Cover, 17...Mounting metal fitting as a mounting member, B...Brake mechanism section. Patent Applicant Minoura Loading Stand Manufacturing Co., Ltd. Agent Patent Attorney On 1) Hironobu No. 8 FIIJ

Claims (1)

[Claims] 1. To prevent mud from getting on the brake mechanism (B) of the bicycle, install a cover (16) that covers only the brake mechanism (B) over almost the entire area, and place the cover (16) near the brake mechanism (B). A bicycle mudguard comprising a mounting member (17) for mounting on a part of a bicycle frame.