JPH08282217A - Tire side protector - Google Patents

Abstract

PURPOSE: To provide a tire side protector, which does not require a troublesome rim assembling work at the time of attaching and detaching the protector, and can be installed simply in a short time. CONSTITUTION: A protector main body 3a is formed like a ring plate in such a manner as to cover the side wall 1s of a tire, a ring-like fitting part 3b is integrally formed on the inner peripheral side of the protector main body 3a, the inside surface of the fitting part 3b is formed along the outside surface of a rim flange 2f, and the fitting part 3b is clamped in a space up to the outside surface of the rim flange 2f by a ring-like fitting jig 4 disposed on the outside surface thereof.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tire side protector mounted on a tire of a vehicle which mainly runs on uneven terrain.

[0002]

2. Description of the Related Art Tires of construction vehicles that run in wastelands or crushed stones may be cut and scratched on the tire sidewalls due to contact with rocks or the like during running. As measures against such cut scratches, JP-A-57-175405 and JP-A-58-110304 propose to mount a ring plate-shaped side protector on the outside of the sidewall of the tire. .

However, the tire side protector proposed above is mounted on the tire side protector because the inner peripheral edge of the ring plate is sandwiched between the bead portion and the rim flange of the tire. When doing this, it had to be done at the same time as the tire rim assembly, and there was the drawback that it took a lot of time and effort.

[0004]

SUMMARY OF THE INVENTION An object of the present invention is to provide a tire side protector which does not require any troublesome rim assembly work at the time of attachment / detachment and can be easily attached in a short time.

[0005]

A tire side protector of the present invention that achieves the above object is such that a protector body is formed in a ring plate shape so as to cover a sidewall of a tire, and a ring shape is formed on an inner peripheral side of the protector body. Is integrally formed, the inner surface of the mounting portion is formed along the outer surface of the rim flange, and the outer surface of the rim flange is formed by a ring-shaped mounting jig having the mounting portion arranged on the outer surface thereof. It is characterized in that it is sandwiched between and.

As described above, since the mounting portion on the inner peripheral side of the protector body is arranged along the outer surface of the rim flange and is clamped from the outer side by the ring-shaped mounting jig, it is independent from the tire rim assembly work. Can be easily attached and detached.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the embodiments shown in the drawings. FIG. 1 shows a cross-section of a main part of a wheel equipped with a tire side protector according to the present invention. In FIG. 1, 1
Is a tire, 2 is a rim, 3 is a tire side protector,
Reference numeral 4 is a mounting jig.

The tire side protector 3 comprises a molded body of hard vulcanized rubber, and has a ring plate-shaped protector body 3a covering the outer surface of the sidewall 1s of the tire 1 and a ring-shaped mounting portion 3b on the inner peripheral side thereof. , And a ring-shaped locking portion 3c formed bifurcated on the outside of the mounting portion 3b. The mounting portion 3b is formed such that the inner side surface is curved along the outer side surface of the rim flange 2f, and the outer side surface is clamped and fixed between the mounting portion 3b and the rim flange 2f by a ring-shaped mounting jig 4. It is like this.
Further, the locking portion 3c is arranged on the outside so as to engage with the mounting jig 4 so as to improve the mountability of the side protector 3. The locking portion 3c is not always necessary in the present invention, and may be omitted as in the embodiment shown in FIG.

Inside the side protector 3, a fiber cord reinforcing layer 5 as shown in FIG. 5 is inserted.
The fiber cord reinforcing layer 5 is composed of two layers in which the fiber cords 5a are arranged on the warp and the weft, and is formed into two layers.
The rigidity of is mechanically substantially isotropic in the radial direction. Further, a reinforcing core material 6 such as a wire is inserted in a ring shape along the outer peripheral portion of the fiber cord reinforcing layer 5, and by inserting the reinforcing core material 6, the tire side protector 3 can be made thin and lightweight. It has high rigidity.

On the other hand, although the mounting jig 4 is ring-shaped as a whole, it is formed in a C-shape in which a part of the circumference thereof is cut out, and the cutting portion has a variable circumferential distance.
The diameter can be expanded and contracted. That is, as shown in FIG. 2, the left screw hole 8a is provided at one end of the cut portion,
The right screw hole 8b is cut on the other side, and these left screw holes 8a are
And the left screw 8b corresponding to the left screw 9a and the right screw 9b are screwed together, and the nut 10 fixed on the bolt 9 is rotated to bring the cutting ends closer to each other. The diameter of the mounting jig 4 is expanded or contracted by changing the circumference by separating them.

By expanding and contracting the diameter of the mounting jig 4 as described above,
The mounting portion 3b of the tire side protector 3 is pressed and fixed or loosened against the outer surface of the rim flange 2f. In the rotation operation of the bolt 9, the hexagonal nut portion 10 is rotated by a jig such as a wrench. The nut portion 10 is provided with a pin hole 12, and the pin hole 12 is provided with a rod-shaped jig. It can also be inserted and rotated.

The mounting jig 4 is rotated by rotating the bolt 9.
Since the stroke of the bolt 9 needs to change by at least ± 5 mm in order to change the diameter of the screw hole by ± 3 mm, the screw holes 8a and 8b each have a length of at least 10 mm.
It is desirable to provide mm. In addition, although a steel material having elasticity is preferable as a material forming the mounting jig 4,
It is also possible to use a fiber reinforced resin in order to further reduce the weight.

Further, in the expansion / contraction mechanism of the mounting jig 4, in the embodiment shown in FIG. 2, the screw holes 8a and 8b are directly machined at both ends of the cut, but as shown in FIG. Brackets 11 and 11 are provided at both ends of the cutting of the mounting jig 4, respectively.
Are welded, and the screw holes 8 are
You may provide so that it may penetrate a and 8b. Since the tire side protector according to the present invention is mounted on the outer surface of the rim flange by the mounting jig as described above, the tire is mounted on the rim regardless of the rim assembly work of the tire, Further, the wheels can be attached and detached while being attached to the vehicle. Therefore, in the case where the tire rim assembly work is required as in the conventional tire side protector, it takes 30 to 40 minutes for the attachment and detachment work, but in the present invention, it is easy in a short time of about 5 to 10 minutes. It will be possible to do.

The tire side protector of the present invention is generally attached to the vehicle outer side surface of the tire attached to the vehicle, but may be attached to the tire inner side surface of the vehicle if necessary. As described above, even when the tire is attached to the side surface of the tire inside the vehicle, the tire can be attached to the rim as it is. The above-mentioned tire side protector according to the present invention can be applied not only to construction vehicles traveling on rough terrain but also to vehicles such as general passenger vehicles and trucks traveling on normal road surfaces.

[0015]

As described above, in the tire side protector of the present invention, the outer side surface of the rim flange is pressed and fixed by the mounting jig. Therefore, the attaching / detaching work does not require the rim assembling work for a short time. Can be done at. Therefore, the present invention is not limited to vehicles for traveling on rough terrain, and can be widely applied to vehicles for traveling on normal road surfaces.

[Brief description of drawings]

FIG. 1 is a longitudinal sectional view of a main part of a wheel equipped with a tire side protector according to an embodiment of the present invention.

FIG. 2 is a sectional view showing a main part of a mounting jig for mounting a tire side protector of the present invention.

FIG. 3 is a cross-sectional view of essential parts showing another embodiment of a mounting jig for mounting the tire side protector of the present invention.

FIG. 4 is a vertical sectional view of a tire side protector according to another embodiment of the present invention.

FIG. 5 is a front view showing an example of a fiber cord reinforcing layer for reinforcing the tire side protector of the present invention.

[Explanation of symbols]

1 tire 1s side wall 2 rim 2f rim flange 3 tire side protector 3a protector body 3b mounting part 4 mounting jig 5 fiber cord reinforcing layer 5a reinforcing cord 8a left screw hole 8b right screw hole 9 bolt 9a left screw 9b right screw 10 nut Department

Claims (3)

[Claims] 1. A protector body is formed in a ring plate shape so as to cover a sidewall of a tire, a ring-shaped mounting portion is integrally formed on an inner peripheral side of the protector body, and an inner side surface of the mounting portion is a rim. A tire side protector having a shape that conforms to the outer surface of the flange, and is clamped between the outer surface of the rim and the outer surface of the rim flange by a ring-shaped mounting jig having the mounting portion disposed on the outer surface thereof. 2. The tire side protector according to claim 1, wherein a diameter of the ring-shaped mounting jig can be freely expanded and contracted. 3. The tire side protector according to claim 1, wherein the protector body and the mounting portion are made of a vulcanized rubber molded body reinforced with a fiber cord reinforcing layer.