JPH0723347Y2 - Mudguards for bicycle front wheels - Google Patents

Description

[Detailed description of the device]

[0001]

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

[0002]

2. Description of the Related Art As shown in FIG. 8, a mudguard 1 for a front wheel of a bicycle is provided with a mudguard body 3 extending rearward from a front fork 2, and the front end of the mudguard body 3 is provided with a stem lower end 4 of the front fork 2. The mounting part 5 arranged on the front side is provided.
In some cases, the attachment portion 5 is fastened to the stem lower end portion 4 by a fastener 6 inserted in the stem lower end portion 4 in the front-rear direction.

In the conventional case, however, as shown in the same figure, the mounting portion 5 is provided with mounting holes 9 for inserting fasteners corresponding to the mounting holes 8 of the lower end portion 4 of the stem, and the mounting holes 8 and 9 are fastened. Tool 6
It was tightened by inserting.

[0004]

[Problems to be solved by the invention] Therefore, in the conventional case,
Depending on the position of the mounting hole 8 in the lower end part 4 of the stem, the mounting position of the front wheel mudguard 1 may be too low, the mudguard 1 may interfere with the front wheel, or the mudguard 1 may be too far from the front wheel.
In some cases, the mudguard function could not be fully fulfilled. For this reason, it is necessary to manufacture multiple types of mudguards 1 in which mounting holes 9 are provided at different positions of the mounting portion 5 according to various bicycles, which makes the manufacturing of mudguards for front wheels cumbersome and expensive to manufacture. There was a problem.

In view of the above-mentioned problems, the present invention is for a front wheel that can be easily and reliably mounted without fear of interfering with the front wheel regardless of the position of the mounting hole at the lower end of the stem and can be manufactured at low cost. The purpose is to provide a mudguard.

[0006]

The technical means of the present invention for solving this technical problem comprises a mudguard body 25 extending rearward from the front fork 14 and a mounting portion at the front end of the mudguard body 25.
In a mudguard for a front wheel of a bicycle, in which the mounting portion 35 is fastened to the stem lower end portion 19 by a fastener 39 that is provided and is inserted into the mounting portion 35 and the stem lower end portion 19, the mounting portion 35 is a front and rear Is formed in a plate shape whose wall thickness in the direction gradually increases toward the lower side, and a mounting hole 36 for inserting a fastener is formed in the mounting portion 35.
Is vertically long and can be cut from the upper edge of the mounting hole 36 toward the middle of the mounting hole 35.
37 is provided.

[0007]

When the front wheel mudguard 24 is mounted on the bicycle, when the mounting hole 21 of the stem lower end 19 is at a relatively low position as shown in FIGS. 1 and 2, the stopper piece 37 is not cut and the mudguard body 25 is not cut. Is arranged above the front wheel 15 of the bicycle so as to extend rearward from the front hawk 14, and the mounting portion 35 at the front end of the mudguard body 25 is brought into contact with the stem lower end portion 19 of the front hawk 14 from the rear side. Then, the mounting hole 36 of the mounting portion 35 and the lower end of the stem
Insert the fastener 39 into the mounting hole 21 of the 19 and mount the fastener with the fastener 39.
Tighten 35 to the stem lower end portion 19. At this time, since the thickness of the mounting portion 35 gradually increases toward the lower side,
By tightening the fasteners 39, the attachment 35 and the mudguard for the front wheels 24
Moves downward with respect to the fastener 39 and the lower end portion 19 of the stem, and the lower end of the stopper piece 37 abuts the fastener 39 from above, whereby the downward movement of the attachment portion 35 and the front wheel mudguard 24 is regulated. The mudguard 24 is attached to the front fork 14 above the front wheel end 15 so as not to interfere with the front wheel 15.

Further, as shown in FIG. 7, when the mounting hole 21 of the stem lower end portion 19 is at a relatively high position, the stopper piece 37 is cut with a hand or a tool, and then the fastener 39 is cut in the same manner as above. Then, the mounting portion 35 may be fastened to the stem lower end portion 19.
At this time, by tightening the fastener 39, the attachment portion 35 to the front wheel mudguard 24 move downward with respect to the fastener 39 and the stem lower end portion 19, and the upper edge of the attachment hole 36 contacts the fastener 39 from above. As a result, the downward movement of the mounting portion 35 and the front wheel mudguard 24 is restricted, and the front wheel 15 is attached to the front fork 14 at a position above the front wheel 15.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the illustrated embodiments. In FIGS. 1 to 6, reference numeral 13 denotes a bicycle, which is a front hawk.
The front wheel 15 is supported by 14. The front hawk 14 is made of pipe material. The front hawk 14 is made of a pipe material, and includes a hawk stem 18 that is inserted into a head pipe 17 of a frame body 16, and a pair of hawk legs 20 that project from the stem lower end portion 19 in a bifurcated shape. A mounting hole 21 for inserting a fastener is formed through the lower end portion 19 of the stem in the front-rear direction.

Reference numeral 24 is a mudguard for the front wheels, which is a mudguard body 25 extending rearward from the front fork 14, a front mudguard body 26 extending forward from the front fork 14, and a coupling body 27 coupling the mudguard body 25 and the front mudguard body 26. The mudguard body 25, the front mudguard body 26, and the connecting body 27 are integrally formed of hard synthetic resin. The mudguard main body 25 has an arcuate bottom wall 29 and a pair of left and right side walls 30 projecting in a mountain shape from both widthwise ends of the bottom wall 29.
Like the mudguard body 25, the front mudguard body 26 has an arcuate bottom wall 32 and a pair of left and right side walls protruding in a mountain shape from both widthwise ends of the bottom wall 32.
33 and. The connecting body 27 has an arc shape and connects the bottom wall 29 of the mudguard body 25 and the bottom wall 32 of the front mudguard body 26.

At the front end of the mudguard body 25, a mounting portion 35 is provided so as to project upward from the front end of the bottom wall 29, and the mounting portion 35 is formed in a plate shape whose thickness in the front-rear direction gradually increases toward the lower side. There is. A mounting hole 36 for inserting a fastener is provided in the mounting portion 35. The mounting hole 36 is formed in a divergent shape that is long in the up-down direction and gradually widens on the lower side, and a stopper piece 37 that can be cut from the upper end edge of the mounting hole 36 toward the middle part of the mounting hole 36 projects downward. Has been done.

The mounting portion 35 is brought into contact with the stem lower end portion 19 of the front fork 14 from the rear side, and bolts and nuts 39 serving as fasteners are attached to the mounting hole 36 of the mounting portion 35 and the mounting hole 21 of the stem lower end portion 19. And the mounting portion 35 is fastened to the stem lower end portion 19 with this bolt nut 39. This makes the mudguard for the front wheels 24
The mudguard main body 25 extends rearward of the front fork 14 to cover the upper rear portion of the front wheel 15, the front mudguard body 26 extends forward of the front fork 14 to cover the upper front portion of the front wheel 15, and the connecting body 27 frontward. The wheel mudguard 24 is attached and fixed to the front hawk 14 in a state in which the stem lower end portion 19 of the hawk 14 and the front wheel 15 are inserted back and forth.

In the above embodiment, the front wheel mudguard 24 is
In addition to the mudguard body 25, a front mudguard body 26 and a connecting body 27 are provided. Instead of this, the front wheel mudguard 24 is a mudguard body.
It is also possible to provide only 25 and omit the front mudguard 26 and the connecting body 27. Further, in the above embodiment, the bolt nut 39 is used as the fastener, but the fastener is a bolt nut.
Not limited to 39, rivets for fastening, fastening pins, and other fasteners may be used.

[0014]

EFFECTS OF THE INVENTION According to the present invention, the mounting portion 35 is formed in a plate shape whose thickness in the front-rear direction gradually increases toward the lower side, and the mounting portion 35 has a mounting hole 36 for inserting a fastener in the vertical direction. Since a stopper piece 37 that is formed to be long in the direction and that can be cut from the upper end edge of the mounting hole 36 toward the middle of the mounting hole 36 is provided, the mounting hole 36 of the stem lower end portion 19 is at a low position. In some cases, the front wheel mudguard 24 interferes with the front wheel 15 by cutting the stopper piece 37, and by cutting the stopper piece 37 when the mounting hole 36 of the stem lower end 19 is at a high position. There is no fear of doing so, with the fastener 39, mudguard for the front wheel
The 24 can be securely attached to the front fork 14. Therefore, the mounting portion 35
It is not necessary to manufacture a plurality of types of mudguards having mounting holes at different positions, and only one mold is required to manufacture the mudguards. The mudguard for the front wheels can be manufactured inexpensively and easily. Moreover, since the mounting portion 35 has a plate shape that gradually becomes thicker toward the lower side, when the front wheel mudguard 24 is molded, the mounting portion 35 can be easily removed from the upper mold or the like. Molding of front wheel mudguards can be easily done, and its practical effect is remarkable.

[Brief description of drawings]

FIG. 1 is a side sectional view showing an embodiment of the present invention.

FIG. 2 is a sectional view taken along the line AA of FIG.

FIG. 3 is a sectional view taken along line BB of FIG.

FIG. 4 is an overall perspective view.

FIG. 5 is a perspective view of a mounting portion.

FIG. 6 is a side view.

FIG. 7 is a side sectional view showing a mounting state of the front wheel mudguard.

FIG. 8 is a side sectional view showing a conventional example.

[Explanation of symbols]

 14 Front fork 19 Lower end of stem 21 Mounting hole 24 Mudguard for front wheel 25 Mudguard body 35 Mounting part 36 Mounting hole 37 Stopper piece 39 Bolt nut (fastener)

Claims (1)

[Scope of utility model registration request] 1. A mudguard body (25) extending rearward from the front fork (14), the mounting portion (35) being provided at a front end of the mudguard body (25).
And a fastener (39) that is inserted through the attachment portion (35) and the stem lower end portion (19) to attach the attachment portion (35) to the stem lower end (1
In the mudguard for a front wheel of a bicycle that is fastened to 9), the attachment portion (35) is formed in a plate shape whose thickness in the front-rear direction gradually increases toward the lower side, and is fastened to the attachment portion (35). A mounting hole (36) for inserting the tool is formed to be long in the vertical direction, and a stopper piece (37) that can be cut from the upper edge of the mounting hole (36) toward the middle of the mounting hole 35 is provided. A mudguard for the front wheel of a bicycle, which is characterized by being