JPH0589010U - tire - Google Patents

Abstract

(57) [Summary] [Purpose] It is possible to change the tires used for normal road surface running into spike tires in automobiles. [Structure] A tire main body 1, a bag body 2 to be housed inside the tire, and a plurality of spikes 3 provided on an outer surface 20 of the bag body 2. The tire body 1 has a plurality of through holes 4 penetrating from the inside of the tire body 1 to the outer surface 10. The spikes 3 allow the spikes 3 to arbitrarily protrude from the tire surface 10 to the outside through the through holes 4 of the tire body 1 due to the expansion of the bag body 2. This allows a normal tire to be used when needed. Can be changed to spiked tires.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to improvement of tires, and more particularly to improvement of spike tires.

[0002]

[Prior Art]

 Conventionally, in automobiles, when traveling on a frozen road surface, chains have been attached to the tires. This requires a labor-intensive work, and in recent years, so-called spiky tires having spikes on the tread surface of the tire have been used because such labor is disliked. This improves the bite of the tire on the frozen road surface due to the presence of spikes, and eliminates the slipping of the tire during traveling on the frozen road.

[0003]

[Problems to be solved by the device]

 However, when driving on a normal road surface, these spikes scrape off the asphalt on the road surface and roughen the road surface. In particular, such scraping of the road surface not only roughens the road surface but also scrapes off signs on the road such as pedestrian crossings and lanes, which is not preferable. After all, if the regulations were made in consideration of such deterioration of the road surface condition, the current situation was that we had to rely on the chain, which is involved in the above work. Furthermore, when driving with such spiked tires on a normal road surface, an automobile also receives more vibration from the road surface than a normal tire, and the riding comfort is not good. The present invention is intended to solve such conventional problems.

[0004]

[Means for Solving the Problems]

 A tire according to the present invention has a tire main body 1, an inflatable bag body 2 that is housed inside the tire, and a plurality of spikes 3 that are provided on an outer surface 20 of the bag body 2. Is taken. The tire body 1 has a plurality of through holes 4 penetrating from the inside to the outer surface 10. These through holes 4 are provided at positions corresponding to the positions of the spikes 3 on the surface 22 of the bag body 2 to be housed. Further, each of the spikes 3 is capable of arbitrarily protruding the spikes 3 from the tire surface 10 through the through holes 4 of the tire body 1 by the expansion of the bag body 2.

[0005]

[Action]

 By adopting the above configuration, the bag 3 housed inside the tire is inflated as necessary, so that the spikes 3 provided on the surface of the bag 2 are inserted into the spikes 3 from the through holes 4 of the tire body 1. Can be arbitrarily projected from the tire surface 10 to the outside, and the tire can be arbitrarily used as a spike tire. Further, by adopting the above configuration, it is possible to conversely shrink the bag body 2 and return the spikes 3 from the tire surface to the inside of the tire.

[0006]

【Example】

 Embodiments of the present invention will be specifically described below with reference to the drawings. FIG. 1 shows an embodiment. A plurality of through holes 4 are formed in the tread surface of the tubeless tire body 1, that is, the ground contact portion 10. The through hole 4 penetrates from the inside of the tire to the surface.

The hollow portion 11 is a portion where air originally used for cushioning the tire is put, and 12 is an air injection portion for putting the air. The hollow portion 11 accommodates the elastic bag body 2 such as a rubber tube. The bag body 2 has a hollow interior 20 and is formed in an annular shape along the outer periphery of the rim 5, like a tire. At an appropriate position on the inner circumference of the annular bag body 2, a port for introducing air into the bag body 2 by a pressurizing means (not shown) such as a compressor or an actuator provided inside the vehicle body. The part 21 is formed.

Further, at a suitable position on the outer periphery of the rim 5 corresponding to the mouth portion 21, a passage 50 is formed which is in the middle of the path leading to the pressing means. A proper passage is provided inside the rim 5 so as to communicate with the above-mentioned pressurizing means. Reference numeral 52 denotes a holding portion of the bag body 2 provided on the rim 5. The pressurizing means is capable of driving and reverse driving (applying a negative pressure to the bag body 2) inside the automobile.

The bag body 2 has a plurality of spikes 3 on an outer surface 22 thereof. Each spike 3 is provided at a position corresponding to the above-mentioned through hole 4.

During traveling on a normal road surface, as shown in FIG. 1, the spike 3 is contained in the through hole 4 and does not project from the tire surface. Then, when the vehicle runs on a slippery road surface such as an icy road, the above-described pressurizing means is driven in the vehicle to send the air B into the inside 20 of the bag body 2. In this way, the bag body 2 is inflated to bring the outer surface 22 of the bag body 2 closer to the back side of the ground contact portion 10 of the tire body 1. During such an operation, the spike 3 slides in the direction A and projects to the outside of the tire body 1 through the through hole 4. That is, due to the expansion of the bag body 2, the spike 3 can be arbitrarily projected from the tire surface 10 to the outside through the through hole 4 of the tire body 1. At this time, the air inside the tire body 1 should be prevented from flowing out of the tire from between the through hole 4 and the spike 3, that is, in a tense state without a gap between the through hole 4 and the spike 3, The inner diameter of the through hole 3 and the outer diameter of the spike 3 are set so that the two fit together. Further, it is more effective if the airtightness is further enhanced by providing a separate sealing means between the through hole 4 and the spike 3.

Further, when traveling on a normal road surface again, the bag body 2 can be contracted by the reverse driving of the pressurizing means, and the spike 3 can be housed in the through hole 4 of the tire again.

Next, another embodiment of the present invention will be described. In the embodiment of FIG. 1 described above, air is introduced into the bag body 2 by providing a pressurizing means such as a compressor or an actuator inside the vehicle body. However, instead of providing the means for supplying air to the bag body 2 inside the vehicle as described above, the air injection portion for injecting air from the outside of the tire is provided like the air injection portion 12 described above. It is also effective to implement by implementing (not shown). This is, for example, when the driver has to drive on a frozen road, he stops at a gas station or the like, injects air from the outside using an inflator to inflate the bag body 2, and causes the spike 3 to protrude to the outside. Is. Cold areas require continuous spikes during winter. Therefore, in such a situation that the number of times the spikes 3 are taken in and out is not so large, even if the air is taken in and out of the bag body 2 from the outside as described above, it is possible to attach and detach the spike. By comparison, it is much less hassle.

Finally, another embodiment will be described. As shown in FIG. 2, a tube 100 is separately provided between the inner peripheral surface of the tire main body 1 and the outer peripheral surface of the bag body 2, and air for the original shock of the tire is injected into the tube 100. By carrying out in this way, the structure for ensuring the airtightness between the through hole 4 and the spike 3 is not required, and the air that should originally be filled in the tire is lost to the outside due to the impact. No worries at all. As will be described in detail with reference to FIG. 3, the tube 100 contains therein air for cushioning a tire. This air is injected from the air injection unit 12 described above. A hole 101 is formed in a portion of the tube 100 where the spike 4 is located. The hole 101 is formed inside the columnar portion 102 provided in the tube 100, and the hole 101 is isolated from the internal space 103 of the tube 100.

[0014]

[Effect of the device]

 By implementing the tire according to the present invention, it is possible to easily form a slip-stop spike on the tire only when necessary without preparing a separate means such as a chain. When not needed, it can easily be stored in the tire. Therefore, it is possible to cope with a frozen road and a snowy road without taking time and effort, and on a road surface with good conditions, this tire can be easily returned to a normal tire. Therefore, when traveling on a normal road surface with the tire according to the present invention, the road surface is not damaged and the riding comfort inside the vehicle is not impaired.

[Brief description of drawings]

FIG. 1 is a schematic overall sectional view of an embodiment of the present invention.

FIG. 2 is a cross-sectional view of an essential part of another embodiment of the present invention.

FIG. 3 is a schematic perspective view of an essential part of another embodiment of the present invention.

[Explanation of symbols]

 1 Tire body 1 2 Bag 3 Spike 4 Through hole

Claims (1)

[Scope of utility model registration request] 1. A tire main body, an inflatable bag body housed inside the tire, and a plurality of spikes provided on an outer surface of the bag body. Has a plurality of through-holes penetrating through, and these through-holes are provided at the positions corresponding to the positions of the spikes on the surface of the bag body to be housed, and the respective spikes expand the bag body. Thus, the spike is capable of arbitrarily protruding the spike from the tire surface to the outside through the through hole of the tire body.