JP2002036827A - Spike made of resin and spike tire using it - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a spike made of resin which is not dropped off from a tire, does not scratch a road surface even when traveling on a general road and is provided with a spike performance equal or more to a spike made of metal, and a spike tire using it. SOLUTION: The spike made of resin is provided with an approximately cylindrical spike part 2; and an engagement part 3 continuously provided on the spike part 2 and engaged with a tread inner surface of the tire and a whole of the spike is integrally molded by a polycarbonate. The spike tire using it is a spike tire in which a spike is attached to a tread surface of the tire and uses the spike made of resin as a spike.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a resin spike used for a spike tire and a spike tire using the spike. More specifically, the present invention relates to a resin spike integrally formed of polycarbonate and a spike using the same. Regarding spiked tires.

[0002]

2. Description of the Related Art Conventionally, when traveling on snow by a car, a tire chain is mounted on the tire in order to prevent the tire from slipping.

[0003] However, this tire chain is troublesome to put on and take off, has a poor ride comfort, and is often shunned when worn, due to severe wear of the tire and the like. In recent years, snow tires, spike tires, and the like have been used.

[0004] Of these, snow tires are well known,
The tread protrusions on the tire surface are enlarged and the tread pattern is deepened, and the tread grooves prevent the tire from spinning by biting the snow,
It has an effective function when traveling on snow.

[0005] On the other hand, however, since the snow tire travels while squeezing the snow as described above, it has a problem that it does not function effectively on ice and snow roads.

[0006] In this regard, a spike tire is formed by driving a metal spike such as a stud into the tread surface of the tire surface. When this spike tire is used, the spike runs while cutting on an ice or snow road surface or the like. Unlike snow tires, it makes it possible to run on slippery roads without slipping.

[0007] As described above, a spike tire equipped with a metal spike is more effective when traveling on an icy and snowy road surface than a snow tire. For example, in general, a spike tire of a conventional metal spike tire is used. The performance of the snow tire when the performance is 100% is 6 on a flat road.
It is said that the spike tire is effective at the 5% level and about 35% in the climbing performance.

[0008]

However, the conventional spike tires use metal spikes such as studs as described above. Therefore, when traveling on a general road, the spike tires use the spikes on the road surface. This causes a problem that dust and the like are generated. For this reason, it has been conventionally prohibited to drive on ordinary roads with spiked tires, and as a result, it is necessary to replace the tires with normal tires depending on the conditions of the road surface. There was a point.

[0009] In addition, there is also a problem that the metal spike is heavy, and the spike falls off from the tire during traveling.

On the other hand, the spikes fall off the tires,
Although it is conceivable to form spikes with a lightweight and flexible material to prevent damage to the road surface, etc., it is said that spikes formed with a lightweight and flexible material cannot exhibit sufficient functions as spikes. There was a problem.

Therefore, the present invention provides a spiked tire which does not fall off from the tire, does not scrape the road surface even when traveling on a general road, and has a spike performance equal to or higher than that of a metal spike. It is an object to provide a resin spike and a spike tire using the same.

[0012]

Conventionally, as an attempt to reduce the weight of a spike used for a spike tire, a method of forming a spike using a resin or the like has been proposed. However, if resin is used, spikes with low hardness will result in inferior spike performance, so when molding resin spikes, ceramics etc. are mixed in, thereby ensuring the hardness of spikes. I was
However, in the case of a spike in which a ceramic or the like is mixed into a resin, the hardness of the spike is higher than that of a road surface such as asphalt, and as a result, similar to the case of a metal spike, when traveling on a general road, There was a problem that the road surface was scraped.

Accordingly, the present inventor has a hardness sufficient to maintain the performance as a spike, but does not cut the road surface even when traveling on a general road with a spiked tire using the same, and further increases the weight. As a result of repeated trial and error on resin spikes that do not fall off the tire lightly,
You've got a valid spike.

That is, the resin spike used in the spike tire of the present invention comprises a substantially columnar spike portion and an engaging portion which is connected to the spike portion and which is engaged in the tread surface of the tire. It is characterized by being integrally molded from polycarbonate as well as being provided.

The spike tire according to the present invention is a spike tire in which a spike is mounted on a tread surface of the tire, wherein the spike has a substantially cylindrical spike portion, and the spike portion is connected to the spike portion. And a resin spike integrally formed of polycarbonate as a whole.

As a result of a performance test and the like by the present inventor, spikes formed of polycarbonate, unlike metal spikes, have a lower hardness and a lower weight than a road surface such as asphalt or the like. It was found that when used for spikes, the road surface was not cut even when traveling on a general road, and it was possible to prevent the tires from falling off.

In addition, a spike integrally molded with polycarbonate can secure a certain hardness as compared with a spike molded with another resin, so that the same spike performance as a metal spike can be obtained. ,
Therefore, in a spike tire using this as a spike, it is possible to effectively prevent the tire from slipping.

Therefore, the resin spike and the spike tire using the same according to the present invention can solve the problems of the conventional spike tire using the metal spike.

[0019]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a resin spike (hereinafter simply referred to as "spike") used in a spike tire of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view showing a spike of the present embodiment. In the figure, reference numeral 1 denotes a spike of the present embodiment. The spike 1 is composed of a spike part and a locking part.

That is, in the figure, 2 is a spike portion,
The spike portion 2 in the present embodiment is formed in a substantially cylindrical shape, and a peripheral portion at the upper end of the spike portion 2 is an edge portion 4.

Further, at the lower end of the spike portion 2,
A circular locking portion 3 having a larger diameter than the spike portion 2 and having a certain thickness is continuously provided.

Here, the locking part 3 will be described in detail. FIG. 2 is a side view of the spike 1 of the present embodiment. 2 and a connecting portion 301 connected to the
1 and a bottom surface portion 302 provided below.

The connecting portion 301 has a diameter larger than that of the spike portion 2 and has a constant thickness. The bottom portion 302 has substantially the same thickness as the connecting portion 301. The diameter of the lower end portion is slightly smaller than the diameter of the continuous portion, and is tapered from the upper end portion to the lower end portion.

The spike 1 in this embodiment is
The whole is integrally formed of polycarbonate. As described above, the present inventor studied a lightweight resin spike as an alternative to the conventional metal spike, and further obtained a resin spike capable of obtaining the same spike performance as a metal spike. As a result of repeated trial and error, a spike made of resin was able to solve the problems of metal spikes while maintaining the same spike performance as metal spikes by integrally molding spikes using only polycarbonate. Was.

That is, as a result of a running test and the like by the present inventor, the spike according to the present embodiment integrally molded from polycarbonate can achieve a lighter weight than a metal spike, and the spike from the tire during running can be reduced. It has become possible to prevent falling off. In addition, since polycarbonate has a lower hardness than asphalt or the like, it does not scrape the road surface even when traveling on a general road, but has a certain hardness unlike the case where other resins are used. Therefore, it was found that the same spike performance as the metal spike could be secured. Therefore, by using the spike of the present embodiment, it is possible to obtain a spike tire that can solve the problems of the conventional spike tire.

The specific height of the spike 1 in this embodiment is as follows. The total height from the upper end of the spike portion 2 to the lower end of the bottom portion 302 is 14 mm.
The thickness of each of the bottom portion 01 and the bottom portion 302 is 1.0 mm. Also, the diameter of the spike portion is 6.0, and the continuous portion 301
Has a diameter of 10.0, and the taper of the bottom surface 302 is about 45 degrees. As the polycarbonate forming the rubber, 118 having a rubber hardness value of 118 is used.

Next, an embodiment of the spike tire of the present invention using the spike 1 of the present invention will be described. FIG. 3 is a cross-sectional view showing a partial structure of a tire surface constituting the spike tire of the present embodiment. In the figure, reference numeral 5 denotes a spike tire of the present embodiment. Also, in the figure, 6 is a tread surface formed on the tire surface, 7 is the tread surface, and 8 is the tread groove. In the spike tire 5 of the present embodiment, the aforementioned polycarbonate spike 1 is mounted on the tread surface 7.

FIG. 4 illustrates this relationship in detail.
FIG. 4 is a cross-sectional view showing a structure of a part of the tread surface 6;
In the figure, reference numeral 501 denotes a mounting hole for mounting the resin spike 1 formed on the tread surface 7. The mounting hole 501 includes a locking hole 503 to which the locking portion 3 of the resin spike 1 is fixed, and a locking hole 503.
The resin spike 1 formed continuously from the upper part of the
Is formed by a through hole 502 through which the spike portion 2 penetrates, and an upper end of the through hole 502 is an opening. The locking portion 3 of the spike 1 is locked in the locking hole 503, and the spike 2 of the spike 1 is further locked in the mounting hole 50.
In the structure penetrating through one through hole 502, the resin spike 1 is mounted on the tread surface 7.

Then, the spike tire 5 of the present embodiment equipped with the spikes 1 made of polycarbonate in this manner.
Then, when the vehicle travels on an icy and snowy road surface, the edge portion 4 at the upper end of the spike portion 2 of the spike 1 scratches snow and the like, so that it is possible to effectively prevent the tire from slipping. At this time, since the hardness of polycarbonate can be increased unlike other resins, it is possible to secure the same level of spike performance as compared with the case where a metal spike is used.

Further, in the spike tire of this embodiment, since the spike made of polycarbonate is used which is lighter than the spike made of metal, it is possible to prevent the spike 1 from falling off the tire during running or the like.

Furthermore, since polycarbonate is lower in hardness than asphalt or the like, when traveling on a general road with this spiked tire, the road surface is not scraped by spikes. It is not necessary to replace the tire with a general tire.

The spike 1 in the above-described embodiment is used.
In the above, the locking portion 3 is constituted by the continuous portion 301 and the bottom portion 302, but it is not always necessary to adopt such a structure.
Any structure may be used as long as the locking portion 3 is connected to the spike portion 2. Further, the size of the spike is not limited to the above-mentioned size, and may be an arbitrary size according to the size of the tire and the like.

Further, the structure of mounting the spike on the tire is not necessarily limited to the above-described method, and any method may be used as long as the spike is mounted so as not to fall on the tread surface of the tire. May be.

[0034]

The resin spike and the spike tire using the same according to the present invention are embodied in the above-described embodiment and have the following effects.

The resin spike of the present invention includes a substantially cylindrical spike portion and a locking portion connected to the spike portion and locked in the tread surface of the tire, and is entirely made of polycarbonate. The spike tire of the present invention is characterized by being integrally molded, and the spike tire of the present invention is a spike tire having a spike mounted on a tread surface of the tire.
As the spike, the above-mentioned resin spike is used.

Thus, the spike in the present invention is:
Unlike the case of metal spikes, unlike the case of metal spikes, since the spike tire of the present invention uses the polycarbonate resin spikes, the hardness is lower and the hardness is lower than the road surface such as asphalt and the weight is reduced. Even when the vehicle runs on the road, the road surface is not scraped, and the spikes can be prevented from falling off the tires.

Furthermore, a spike integrally molded from polycarbonate can secure a certain hardness as compared with a spike molded from another resin, so that the same spike performance as a metal spike can be obtained. ,
Therefore, in a spike tire using this as a spike, it is possible to effectively prevent the tire from slipping.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment of a resin spike of the present invention.

FIG. 2 is a diagram showing a side view of an embodiment of the resin spike of the present invention.

FIG. 3 is a diagram for explaining a structure of an embodiment of a spike tire of the present invention.

FIG. 4 is a diagram illustrating the structure of an example of a spike tire according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Spike made of resin 2 Spike part 3 Lock part 301 Connecting part 302 Bottom part 4 Edge part 5 Spike tire 501 Mounting hole 502 Through hole 503 Lock hole 6 Tread surface of tire 7 Tread surface 8 Tread groove

Claims (2)

[Claims] 1. A spike made of resin used for a spike tire, wherein the spike has a substantially cylindrical shape, and the spike (2).
And a locking portion (3) provided in the tread surface of the tire, the resin spike being integrally formed of polycarbonate. 2. A spike tire having a spike mounted on a tread surface of the tire, wherein the spike according to claim 1 is used as the spike.