JPH1059248A - Fender for bicycle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve usability by forming fenders out of almost belt-like flexible thin flat plates, chevron-likely bending them and gutter-likely holding them, and locking them with a frame for mounting. SOLUTION: A front fender 10 and a rear fender 20 are formed by cutting a polyethylene sheet formed into a almost belt-like flexible thin flat plate. Slittings are formed on both end parts of the front fender 10 and the rear fender 20 along the lengthwise direction, and hooks 12, 22 are fixed to the slitted both side parts. By forming the slitting, the end part is formed into a swallow- tail-like forked shape. By fastening together the forked ends with the hooks 12, 22 so as to bend them chevron-likely into a nearly gutter shape, the form covering the circumferential parts of tires is held although they are formed out of thin flat plate, and the fenders can be easily constituted by locking the recessed parts formed in the inner parts of the slittings with a frame 31.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a bicycle fender and, more particularly, to a bicycle fender that can function only when used.

[0002]

2. Description of the Related Art Hitherto, as this kind of bicycle fender, one disclosed in Japanese Patent Application Laid-Open No. 1-195190 is known. The retractable fender disclosed in the publication includes a support having a slit-shaped opening to be mounted below the saddle, and a fender plate mounted to be drawn out and stored in this opening. Pull out and use when needed.

[0003]

In the conventional bicycle fender described above, in addition to the fender plate, a support for pulling out and storing the fender plate is required.
There is a problem that the number of parts is large and the shape becomes complicated because of the three-dimensional shape. Further, the installation place is limited to a certain place pulled out from the saddle, and a sufficient mudguard effect cannot be expected. The present invention has been made in view of the above problems, and an object of the present invention is to provide a bicycle fender which has a simple configuration and can enhance a mudguard effect.

[0004]

In order to achieve the above-mentioned object, the invention according to claim 1 is formed of a thin flat plate having a substantially band-like shape and covering the peripheral portion of the tire. It is configured to be bent in a chevron shape, held in a substantially gutter shape, and attached by being locked to a frame. Since it is a thin flat plate having a substantially band-like shape, it can be rolled up when it is unnecessary. On the other hand, if it is bent into a chevron to form a substantially gutter shape, it is possible to maintain a constant shape without bending without permission.
In this state, if the tire is attached to the frame so as to cover the peripheral portion of the tire, mud, rainwater, and the like that jump from the tire are shut off.

[0005] The thin flat plate only needs to be flexible, and can be easily formed of, for example, a general resin material such as nylon or polypropylene. It is sufficient that the material has at least enough flexibility to be formed in a gutter shape and held when bent into a mountain shape. The shape may be substantially a strip-like shape, and its length may be appropriately changed depending on the tire diameter and mudguard range,
The width can be appropriately changed depending on the mudguard range. Various methods can be used to make the shape substantially gutter-shaped, but, as an example, the invention according to claim 2 is a bicycle fender according to claim 1, wherein the end portion is formed into a swallow-tailed bifurcated shape, By overlapping and fixing each other, it is configured to bend into a mountain shape and hold it in a substantially gutter shape.

[0006] The end of the thin plate is a swallow-tailed bifurcated,
Since the tips are overlapped and fixed, the portion that is not bifurcated is bent into a mountain shape. Further, since the tip is fixed, a substantially gutter-like shape is maintained. Various methods can be used for fixing the tips, but it is preferable that the tips can be easily attached and detached for reuse. As an example of this, the invention according to claim 3 has a configuration in which the front ends are hooked and fixed in the bicycle fender according to claim 2. Since the tips can be hooked together,
Secure when using, remove when not in use.
Of course, other than the hook, the other side may be hooked and fixed to the cut formed on one side.

The bifurcated shape is intended to facilitate the formation of the gutter shape. The invention according to claim 4 is the bifurcated fender according to claim 2 or 3. A concave portion is formed inside the portion to hold and hold the frame. In other words, when attaching to the frame in a gutter shape, if a recess is formed inside the bifurcated inner part, the frame is easily sandwiched,
After that, if the tip is fixed with a hook or the like, it is fixed to the frame.

Needless to say, the method of engaging the frame is not limited to this, and can be changed as appropriate. As another example, the invention according to claim 5 is the bicycle according to claims 2 to 4. The fender has a configuration in which a concave portion is formed outside the bifurcated tip and the frame is pinched and locked by a force to return when crossed. A recess is formed on the outside of the bifurcated tip, and when crossed, it just looks like a plier. Then, in a state where the tips are crossed, a force for returning to the original flat plate acts, and the tips tend to be strongly pinched. As a result, the frame is firmly held and can be locked.

Further, according to a sixth aspect of the present invention, in the bicycle fender according to any one of the first to fifth aspects, cuts are formed inward on both side edges so as to be outward when passing through the narrow portion. It is configured to be locked by trying to push open. If it is bent and pushed through the narrow part, it will be pushed back from the inside in order to return to its original state, but at this time, it can be locked only at the abutting point. However, if cuts are formed inward at both side edges, the notches are bent while conforming along the abutting portion, and can be more securely locked at a plurality of portions.

Of course, these may be locked not only by a single locking means but also by a plurality of methods. Up to now, the forked ends have been overlapped to form a gutter. However, the invention according to claim 7 is to attach a substantially gutter-shaped mold member to the bicycle fender according to claims 1 to 6. Therefore, it is configured to bend into a mountain shape and hold it in a substantially gutter shape. By mounting the mold, the thin flat plate easily becomes a desired shape. For example, it may be a cylindrical body and its inner shape may be a gutter shape, or it may be semicircular like a real gutter support and mounted from the outside and held in a semicircular shape It may be something to do.

Although the above-described method and the like can be used for locking the frame, the mounting position with respect to the frame is set to be held at the peripheral portion of the tire. Here, the invention according to claim 8 is the bicycle fender according to any one of claims 1 to 7, in which the seat tube is locked at one end so as to sandwich the seat tube and passes between the seat stays. It is configured to abut and lock so as to be pushed open, and to extend rearward.

When the rear tire is locked at one end to the seat tube and extends rearward through the space between the seat stays, the rear tire is generally covered from the front to the upper side. It is stopped and only the rear end protrudes. On the other hand, the invention according to claim 9 is based on claim 1
The bicycle fender according to any one of claims 1 to 8, wherein the handle tube and the top tube are locked at one end so as to be clamped, and the down tube is clamped and locked at the other end, and are extended downward. Configuration.

[0013] While holding the handle tube and the top tube at one end, and holding and locking the down tube at the other end facing downward, it is supported between the front tire and the occupant. As described above, the bicycle fender is mounted on the frame at the time of use. In the invention according to claim 10, in the bicycle fender according to claims 1 to 9,
It is configured to be stored in a state of being wound in a flat state with respect to a storage case attached to the top tube and the down tube.

That is, when rolled up when not in use, it is accommodated in a storage case mounted in a free space between the top tube and the down tube.

[0015]

As described above, the present invention is formed by bending a substantially strip-shaped thin flat plate, so that it can be formed extremely easily, and can be mounted only when used and rolled up when not used. Since it is sufficient, a bicycle fender that can greatly improve convenience can be provided.

Further, according to the second aspect of the present invention, it is possible to easily hold the pipe in a gutter shape by a very simple process of merely forming the end portion into a forked shape. Furthermore, according to the third aspect of the present invention, the hook can be easily attached and detached and the reliability at the time of fixing can be improved. Further, according to the fourth aspect of the invention, the forked shape can serve the dual functions of holding the gutter shape and fixing to the frame. Furthermore, according to the invention according to claim 5, it can be sandwiched like a plier by the outer part of the forked tip, and can be firmly fixed by the returning force.

Further, according to the invention according to claim 6,
Since it can bend while conforming to the cut, it is easy to adhere to the part to be spread. Further, according to the seventh aspect of the present invention, a desired shape can be obtained because the mold is used. Furthermore, according to the invention of claim 8, it is possible to hold the rear position at an optimum position. Further, according to the ninth aspect of the invention, it is possible to hold the front position at an optimum position.

Further, according to the tenth aspect of the present invention, the space between the top tube and the down tube can be effectively utilized for storage.

[0019]

Embodiments of the present invention will be described below with reference to the drawings. 1 and 2 are plan views showing a bicycle fender according to an embodiment of the present invention, which are for front and rear, respectively. Also,
FIG. 3 is a perspective view showing a state where the front and rear bicycle fenders are mounted on a bicycle.

In the figure, the front fender 10 and the rear fender 20 are both formed by cutting a substantially strip-shaped polyethylene sheet. In the present embodiment, a polyethylene sheet is used, but any other sheet material such as a PVC sheet or a drained paper sheet may be used as long as the sheet is a generally strip-shaped and flexible flat plate. It may be of a material. Cutting may be performed by punching or laser cutting may be appropriately selected.

The thin plate is used to provide flexibility, and the thickness may be appropriately selected according to the flexibility of the material. The reason why the sheet is formed into a flat shape is that if a uniform sheet material is punched out, the cost can be reduced. Therefore, it is not necessary that the thickness be uniform at all places. Conversely, by using a mold, it is also possible to increase the thickness or to form a rib depending on the part. Cuts 11 and 21 are formed at both ends of the front fender 10 and the rear fender 20 along the length direction, and hooks 12 and 22 are fixed to the cut both sides.
By forming such a notch, the end portion becomes bifurcated in a swallow-tail shape, and the hook 1
It can be stopped at 2,22.

FIG. 4 is a plan view showing a state in which the pieces are stopped in this manner, and FIGS. 5 to 7 show cross sections at respective points in the length direction. Even if it is flexible like a polyethylene sheet, when it is overlapped in this way, it is held in a trough shape with a substantially semicircular cross section just like a boat made of origami or bamboo leaves . Thereby, it can function as a so-called fender. In the present embodiment, the hooks 12 and 22 are used for fixing, but it is sufficient that the fork portions can be fixed by overlapping them, and other methods are also possible. For example, in the one shown in FIG. 8, arcuate cuts 13b, in which one end piece is formed with convex pieces 13a, 13a extending in the width direction and the other end piece can be inserted with the same convex pieces 13a, 13a, 13b are formed, and when the end pieces are overlapped as shown in FIG. 9, the convex pieces 13a, 13a are cut out 13b, 13b.
And fix it. On the other hand, in the one shown in FIG.
A tongue piece 13c extending in the length direction is formed on one end piece, and cutouts 13d, 13d for inserting the tongue piece 13c are formed on the other end piece. As shown in FIG. Tongue piece 1 when the end pieces are overlapped
3c is inserted and fixed in the cuts 13d, 13d.
Further, it may be wound around an end with a material such as a rubber band and fixed. In either case, the bicycle 30 is devised so that it does not easily come off due to the vibration when traveling.

On the other hand, as a method of holding in a gutter shape in this way, as shown in FIGS. 12 and 13, form members 14a and 14b having substantially gutter-shaped inner surfaces are formed, and as shown in FIG. The sheet may be bent and inserted as a gutter. When such a mold is used, the cross section at each portion can be formed into a desired shape. The notches 11 and 21 described above are formed in the front fender 10 and the rear fender 20, and recesses 15 and 25 having a substantially elliptical shape are formed inside some of the deep portions. The recesses 15 and 25 allow the tube of the frame 31 to be sandwiched when the front fender 10 and the rear fender 20 are locked to the bicycle 30, and are appropriately positioned at predetermined positions according to the mounting position with respect to the frame 31. It is formed. The recesses 15 and 25 allow the front fender 10 and the rear fender 20 to be mounted so as to cross the frame 31. In addition, since it is unstable just to pinch, at least the concave portions 15 and 2
The hook 1 is located at the opening end side of the cuts 11 and 21 as viewed from 5.
2,22 are installed. Of course, it is also possible to attach to both sides.

Further, at one end of the front fender 10, recesses 16, 16 having a substantially semicircular shape are formed on the outside, and the recess 15 described above is separately formed at the back. When the frame 31 is sandwiched between the recesses 15, the ends of the cuts 11 intersect. Therefore, the substantially semicircular recesses 16, 16 which were initially located on the outside are both opened toward the inside, so that the tube of the frame 31 can be sandwiched like the recess 15.

The diamond-shaped frame 31 is a head tube 3 for rotatably supporting a front fork 32.
3, a top tube 34 extending substantially horizontally rearward from the upper end of the head tube 33, a down tube 35 extending obliquely downward rearward from the lower end of the head tube 33, and a top tube 34 and a down tube. A seat tube 36 connecting the ends of the seat tube 35; chain stays 37 extending substantially horizontally rearward from both widthwise lower ends of the seat tube 36;
And the seat stays 38 extend obliquely downward from the upper end of the chain stays 37 toward the ends of the chain stays 37. The handle tube 41 is inserted through the head tube 33, the front tire 42 is mounted on the lower end of the front fork 32, and the rear tire 43 is mounted on the rear ends of the chain stays 37.

As shown in FIG. 3, the rear fender 20 passes between the two sheet stays 38, 38. A plurality of cuts 27 are formed inward on both side edges corresponding to the passing portion. Is formed. The rear fender 20 tends to be pushed outward when passing between the seat stays 38, 38.
If not, the seat stays 38, 38 may simply come into contact with one point. In this case, it may move up and down due to the vibration. However, a plurality of cuts 27
If there are multiple small tongue pieces between them, the seat stay 38
, So that it fits into the outer surface of the seat stay 38 and can be easily prevented from coming off.

Next, the operation of this embodiment having the above configuration will be described. In the case of the front fender 10, the top tube 34 is sandwiched by the concave portion 15 formed in the notch 11 on the upper end side, and the concave portion 1 formed further outside the distal end.
At 6 and 16, the handle stem 41 is sandwiched and mounted. Further, the down tube 35 is sandwiched by the concave portion 15 formed in the depth of the cut 11 on the lower end side, the lower end pieces are overlapped to form a gutter shape, and fixed by the hook 12. Front fender 1 mounted in this way
0 is located between the occupant and the front tire 42 and at the periphery of the front tire 42. Therefore, even if mud or rainwater jumps up from the front tire 42, it can be effectively shut off.

On the other hand, in the case of the rear fender 20, the lower end of the seat tube 36 is sandwiched by the recess 25 formed in the depth of the notch 21 at the lower end and is locked to the frame 31. Further, the middle of the rear fender 20 is passed between the upper ends of the two seat stays 38, 38 so that the rear ends protrude rearward. Since the cut 21 is formed at the rear end as described above, the cut 21 is overlapped and fixed with the hook 22. Also in this case, the rear fender 20 is located between the rear tire 43 and the passenger and the rear tire 4
3, so that even if mud or rainwater jumps up from the rear tire 43, it can be effectively shut off.

As is apparent from FIG. 3, in the case of the front fender 10 and the rear fender 20 shown in this embodiment, the front fender 10 and the rear fender 20 are supported at positions extending on both sides in the middle of the line connecting the occupant and the axle. Become. Therefore, a mudguard function can be performed very effectively like an original fixed type fender. On the other hand, in the case of the conventional one, it extends only backward from the saddle, so that it can cover only about the back of the occupant, which is almost meaningless from a practical feeling of use.

Since the front fender 10 and the rear fender 20 are merely cut from a polyethylene sheet, they can be easily bent when they are in a flat state where they are not stopped by the hooks 12 and 22. Therefore,
When rounded as shown in FIG. 15, it becomes compact. As shown in FIG. 16, the front fender 10 and the rear fender 10 in a rounded state are attached by attaching a bag-shaped storage case 50 to be attached to a surrounding tube in a substantially triangular internal space formed in the frame 31. Fender 2
0 can be stored.

As described above, a flexible thin plate having a substantially band-like shape is formed from a polyethylene sheet or the like, and both ends are overlapped and fixed while forming notches 11 and 21 from the ends. If it is bent into a substantially gutter shape, it is held in a shape that covers the peripheral portion of the tire while being a thin flat plate. By stopping the bicycle fender, it is possible to provide a bicycle fender which can be easily configured and easily detached.

[Brief description of the drawings]

FIG. 1 is a development view of a front fender in which a bicycle fender according to one embodiment of the present invention is applied to a front.

FIG. 2 is a development view of a rear fender in which the bicycle fender is applied to a rear.

FIG. 3 is a perspective view showing a state in which a front fender and a rear fender are mounted on a bicycle.

FIG. 4 is a plan view of an end of the rear fender.

5 is a cross-sectional view of the rear fender taken along line vv in FIG. 4;

6 is a cross-sectional view of the rear fender of FIG. 4 taken along line vi-vi.

FIG. 7 is a sectional view taken along line vii-vii of the rear fender in FIG. 4;

FIG. 8 is a development view of an end of a rear fender according to a modification.

FIG. 9 is an assembly view of an end of a rear fender according to the modification.

FIG. 10 is a development view of an end of a rear fender according to another modification.

FIG. 11 is an assembly view of an end of a rear fender according to the modification.

FIG. 12 is a perspective view of a molding material.

FIG. 13 is a perspective view of another mold member.

FIG. 14 is a perspective view of the bicycle fender with a profile attached.

FIG. 15 is a schematic perspective view showing a state in which a front fender and a rear fender are rolled.

FIG. 16 is a schematic perspective view of a storage case for storing a front fender and a rear fender.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 ... Fender for front 11 ... Cut 12 ... Hook 14a, 14b ... Shape 15 ... Concave 16 ... Concave 20 ... Fender for rear 21 ... Cut 22 ... Hook 25 ... Concave 27 ... Cut 30 ... Bike 31 ... Frame 42 ... Front tire 43 ... rear tire 50 ... storage case

Claims (10)

[Claims] 1. A belt-shaped flexible thin plate, which is bent in a mountain shape so as to cover a peripheral portion of a tire, held substantially in a gutter shape, and is locked by a frame. A fender for a bicycle, which is mounted on the bicycle. 2. The bicycle fender according to claim 1, wherein the end is formed into a swallow-tailed bifurcated shape, and the ends are overlapped and fixed to be bent into a mountain shape and held in a substantially gutter shape. A bicycle fender characterized by the following. 3. The bicycle fender according to claim 2, wherein the front ends are hooked and fixed. 4. The bicycle fender according to claim 2, wherein a concave portion is formed inside the forked portion to hold and hold the frame. 5. The bicycle fender according to any one of claims 2 to 4, wherein the frame is pinched and locked by a force that tends to return when a recess is formed outside the bifurcated tip and crosses each other. Bicycle fender characterized by the following. 6. The bicycle fender according to any one of claims 1 to 5, wherein a notch is formed in each side edge portion toward the inside, and when the bicycle fender passes through the narrow portion, it is pushed outward and locked. A fender for a bicycle, characterized in that: 7. The bicycle fender according to claim 1, wherein a substantially gutter-shaped member is attached to the fender, whereby the bicycle fender is bent into a mountain shape and held in a substantially gutter-like shape. Fender. 8. The bicycle fender according to claim 1, wherein one end of the fender is locked so as to pinch the seat tube, and is pushed open when passing between the seat stays. A front bicycle fender characterized in that it contacts and locks and extends rearward. 9. The bicycle fender according to any one of claims 1 to 8, wherein the handle fender and the top tube are held at one end so as to be held therebetween, and the down tube is held at the other end. A fender for a bicycle, which is locked and extends downward. 10. The bicycle fender according to claim 1, wherein the bicycle fender is stored in a state of being wound in a flat state with respect to a storage case attached to the top tube and the down tube. Bicycle fender.